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  1. Ansatte

Språkvelger

English

Helge Lyder Waldum

Last ned pressefoto
Last ned pressefoto
Foto:

Helge Lyder Waldum

Tilknyttet/affiliated

helge.waldum@ntnu.no
72825156 Gastrosenteret, 431.04.016, Øya, Prinsesse Kristinas gate 1
Publikasjoner Formidling

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2025

  • Waldum, Helge. (2025) The need for a better classification system for gastric neoplasms. Nature Reviews Disease Primers
    Brev til redaktøren
  • Resell, Mathilde Victoria; Qvigstad, Gunnar; Wang, Timothy Cragin; Quante, Anne S.; González-Fernández, África; Gonzalez-Fernandez, Africa. (2025) Translational studies on pancreatic cancer and gastric cancer: A methodology in PhD thesis. Frontiers in Pharmacology
    Fagartikkel
  • Waldum, Helge; Modlin, Irvin. (2025) The central role of gastrin in Helicobacter pylori gastric carcinogenesis. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review

2024

  • Waldum, Helge. (2024) Gastric Malignancies in United States in the Period From 2000 to 2018. Clinical Gastroenterology and Hepatology
    Brev til redaktøren
  • Waldum, Helge; Fossmark, Reidar. (2024) Eradication of Helicobacter pylori by a potassium-competitive acid blocker alone?. Scandinavian Journal of Gastroenterology
    Kronikk
  • Waldum, Helge. (2024) The Role of Gastric Juice in the Defence Against Common and Serious Diseases. Japanese Journal of Gastroenterology and Hepatology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Slupphaug, Geir. (2024) Correctly identifying the cells of origin is essential for tailoring treatment and understanding the emergence of cancer stem cells and late metastases. Frontiers in Oncology
    Vitenskapelig oversiktsartikkel/review

2023

  • Waldum, Helge. (2023) Taper nok mer på Helseplattformen enn på "Helge Ingstad". Dagens næringsliv
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian. (2023) Uforstand å tro at biologiske funksjoner kan fjernes uten konsekvenser. Dagens medisin
    Leserinnlegg
  • Waldum, Helge; Mjønes, Patricia Gjertrud. (2023) Clear Cell Renal Cancer, a Tumour with Neuroendocrine Features Originating from the Erythropoietin-Producing Cell. IntechOpen
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Fossmark, Reidar. (2023) Inflammation and Digestive Cancer. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Conclusion that autoimmune gastritis does not predispose to gastric cancer is unproven. Gut
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Helicobacter pylori: A Bacterium Influencing and Causing Most of the Diseases in the Upper Gastrointestinal Tract. An Overview with Respect to Pathogenesis and Treatment Based on Basic Physiology. IntechOpen
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Mjønes, Patricia Gjertrud. (2023) The central role of gastrin in gastric cancer. Frontiers in Oncology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Conclusion that autoimmune gastritis does not predispose to gastric cancer is unproven. Gut
    Short communication
  • Waldum, Helge. (2023) Dysfunction of von-Hippel Lindau factor causes reduced degradation of HIF leading to renal cancer. Hypoxia-inducible factor-prolyl hydroxylase enzyme inhibitors also lessen HIF destruction and could therefore increase renal cancer. Frontiers in Pharmacology
    Leserinnlegg

2022

  • Waldum, Helge; Wiseth, Rune; Wahba, Alexander. (2022) Serotonin and valvular heart disease. Expert opinion on therapeutic targets
    Leder
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2022) Hypergastrinemia and mortality in gastric adenocarcinoma: a population-based cohort study, the HUNT study. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Wahba, Alexander. (2022) Serotonin—A Driver of Progressive Heart Valve Disease. Frontiers in Cardiovascular Medicine
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2022) Risk of gastric and oesophageal adenocarcinomas following discontinuation of long-term proton-pump inhibitor therapy. Journal of gastroenterology
    Brev til redaktøren
  • Waldum, Helge; Fossmark, Reidar. (2022) Proton pump inhibitors and mortality. Gastroenterology
    Brev til redaktøren

2021

  • Waldum, Helge; Martinsen, Tom Christian. (2021) Chronic diseases: what about infections of virus and prions via the gut?. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Fossmark, Reidar. (2021) Gastritis, Gastric Polyps and Gastric Cancer. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2021) HYPERGASTRINEMIA IS NOT ASSOCIATED WITH INCREASED MORTALITY IN GASTRIC ADENOCARCINOMA. United European Gastroenterology Journal (UEG Journal)
    Sammendrag/abstract
  • Waldum, Helge; Mjønes, Patricia. (2021) Time to classify tumours of the stomach and the kidneys according to cell of origin. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2021) Tumor classification should be based on biology and not consensus: Re-defining tumors based on biology may accelerate progress, an experience of gastric cancer. Cancers
    Vitenskapelig oversiktsartikkel/review

2020

  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2020) Hypergastrinemia is associated with proximal and intestinal type gastric adenocarcinoma. Gastroenterology
    Sammendrag/abstract
  • Kjellman, Magnus; Knigge, Ulrich; Welin, Staffan; Thiis-Evensen, Espen; Grønbæk, H; Schalin-Jäntti, Camilla. (2020) A plasma protein biomarker strategy for detection of small intestinal neuroendocrine tumors. Neuroendocrinology
    Vitenskapelig artikkel
  • Waldum, Helge. (2020) Reflections after 10 years as Editor, including 8 years as Editor-in-Chief in Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik. (2020) Hypergastrinemia is associated with an increased risk of gastric adenocarcinoma with proximal location: A prospective population-based nested case-control study. International Journal of Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Mjønes, Patricia. (2020) Towards understanding of gastric cancer based upon physiological role of gastrin and ECL cells. Cancers
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2020) Gastrin drives gastric cancer due to oxyntic atrophy also after Helicobacter pylori eradication. Therap Adv Gastroenterol
    Leserinnlegg
  • Waldum, Helge. (2020) The Influence of the Pharmaceutical Industry on Medicine, as Exemplified by Proton Pump Inhibitors. Cambridge Scholars Publishing Cambridge Scholars Publishing
    Vitenskapelig monografi
  • Waldum, Helge. (2020) The increase in early-onset gastric carcinomas from 1995 is probably due to the introduction of proton pump inhibitors. Surgery
    Leserinnlegg
  • Aasarød, Kristin Matre; Waldum, Helge; Stunes, Astrid Kamilla; Sandvik, Arne Kristian; Flatberg, Arnar; Mjønes, Patricia. (2020) Gastric Corpus Mucosal Hyperplasia and Neuroendocrine Cell Hyperplasia, but not Spasmolytic Polypeptide-Expressing Metaplasia, Is Prevented by a Gastrin Receptor Antagonist in H+/K+ATPase Beta Subunit Knockout Mice. International Journal of Molecular Sciences
    Vitenskapelig artikkel
  • Waldum, Helge; Mjønes, Patricia. (2020) Correct Identification of Cell of Origin may Explain Many Aspects of Cancer: The role of Neuroendocrine Cells as Exemplified from the Stomach. International Journal of Molecular Sciences
    Vitenskapelig artikkel
  • Helgadottir, Holmfridur; Lund, Sigrun H; Gizurarson, Sveinbjörn; Waldum, Helge; Björnsson, Einar B. (2020) Pharmacokinetics of single and repeated oral doses of esomeprazole and gastrin elevation in healthy males and females. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

2019

  • Waldum, Helge; Sørdal, Øystein Finset; Mjønes, Patricia. (2019) The enterochromaffin-like [ECL] cell-central in gastric physiology and pathology. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Fossmark, Reidar; Waldum, Helge. (2019) The phylogeny and biological function of gastric juice-microbiological consequences of removing gastric acid. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Fossmark, Reidar. (2019) Enterochromaffin-like (ECL) Cells. Elsevier
    Faglig kapittel
  • Fossmark, Reidar; Balto, Tine Marie; Martinsen, Tom Christian; Grønbech, Jon Erik; Munkvold, Bjørn; Mjønes, Patricia. (2019) Hepatic micrometastases outside macrometastases are present in all patients with ileal neuroendocrine primary tumour at the time of liver resection. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Fossmark, Reidar. (2019) Role of Autoimmune Gastritis in Gastric Cancer. Clinical and Translational Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge. (2019) Stomach Hormones. Elsevier
    Faglig kapittel
  • Waldum, Helge; Rehfeld, Jens F.. (2019) Gastric cancer and gastrin: on the interaction of Helicobacter pylori gastritis and acid inhibitory induced hypergastrinemia. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge. (2019) Hypergastrinemia is the Pathogenetic Factor in Helicobacter Pylori Carcinogenesis. Clinical Consequences, Particularly for Treatment with Inhibitors of Gastric Acid Secretion. Japan Journal of Medicine
    Short communication
  • Fossmark, Reidar; Martinsen, Tom Christian; Waldum, Helge. (2019) Adverse effects of proton pump inhibitors – evidence and plausibility. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review

2018

  • Valeur, Jørgen; Waldum, Helge. (2018) Surmaget. NGF-nytt
    Fagartikkel
  • Waldum, Helge; Fossmark, Reidar. (2018) Types of gastric carcinomas. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Öberg, Kjell; Sørdal, Øystein Finset; Sandvik, Arne Kristian; Gustafsson, Björn; Mjønes, Patricia. (2018) Not only stem cells, but also mature cells, particularly neuroendocrine cells, may develop into tumours: time for a paradigm shift. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Sørdal, Øystein Finset; Fossmark, Reidar. (2018) Proton pump inhibitors (PPIs) may cause gastric cancer – clinical consequences. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2018) Evidensbasert medisin- er alene et for spinkelt grunnlag for klinisk praksis. LVSinfo
    Kronikk
  • Waldum, Helge; Fossmark, Reidar. (2018) Proton pump inhibitors and gastric cancer: a long expected side effect finally reported also in man. Gut
    Short communication
  • Waldum, Helge. (2018) Editorial: proton pump inhibitors (PPIs) and primary liver cancer. Alimentary Pharmacology and Therapeutics
    Leder

2017

  • Mjønes, Patricia; Nordrum, Ivar Skjåk; Qvigstad, Gunnar; Sørdal, Øystein Finset; Rian, Liselotte Linnea Mårtensson; Waldum, Helge. (2017) Expression of erythropoietin and neuroendocrine markers in clear cell renal cell carcinoma. APMIS : Acta pathologica, microbiologica et immunologica Scandinavica. Supplementum
    Vitenskapelig artikkel
  • Vange, Pål; Bruland, Torunn; Doseth, Berit; Fossmark, Reidar; Sousa, Mirta; Beisvag, Vidar. (2017) The cytoprotective protein clusterin is overexpressed in hypergastrinemic rodent models of oxyntic preneoplasia and promotes gastric cancer cell survival. PLOS ONE
    Vitenskapelig artikkel
  • Mjønes, Patricia; Sagatun, Liv; Nordrum, Ivar Skjåk; Waldum, Helge. (2017) Neuron-Specific Enolase as an Immunohistochemical Marker Is Better Than Its Reputation. Journal of Histochemistry and Cytochemistry
    Vitenskapelig artikkel
  • Mjønes, Patricia; Nordrum, Ivar Skjåk; Sørdal, Øystein Finset; Sagatun, Liv; Fossmark, Reidar; Sandvik, Arne Kristian. (2017) Expression of the cholecystokinin-B receptor in neoplastic gastric cells. Hormones and Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Sagatun, Liv; Mjønes, Patricia. (2017) Gastrin and gastric cancer. Frontiers in Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Björnsson, Einar S.; Brenna, Eiliv. (2017) Chronic cholestatic liver diseases. Scandinavian Journal of Gastroenterology
    Brev til redaktøren
  • Fossmark, Reidar; Waldum, Helge. (2017) Sykdommer i ventrikkel og duodenum. Forlaget Vett & Viten AS
    Faglig kapittel

2016

  • Waldum, Helge; Martinsen, Tom Christian. (2016) To the editor. JAMA Neurology
    Brev til redaktøren
  • Zeinali, Fatemeh; Bakkelund, Karin Elvenes; Hauso, Øyvind; Loennechen, Jan Pål; Waldum, Helge. (2016) Assessment of radiofrequency ablation technique in development of aortic valve stenosis in rabbits. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Waldum, Helge. (2016) Proton pump inhibitors and gastric cancer. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian. (2016) Proton Pump Inhibitors and Dementia Incidence. JAMA Neurology
    Leserinnlegg
  • Waldum, Helge Lyder; Kleveland, Per Martin; Sørdal, Øystein Finset. (2016) Helicobacter pylori and gastric acid: An intimate and reciprocal relationship. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Sagatun, Liv; Mjønes, Patricia Gjertrud; Jianu, Constantin-Sergiu; Boyce, Malcolm; Waldum, Helge Lyder; Fossmark, Reidar. (2016) The gastrin receptor antagonist netazepide (YF476) in patients with type 1 gastric enterochromaffin-like cell neuroendocrine tumours: Review of long-term treatment. European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Boyce, Malcolm; Moore, Andrew; Sagatun, Liv; Parsons, Bryony; Varro, Andrea; Campbell, Fiona. (2016) Netazepide, a gastrin/cholecystokinin-2 receptor antagonist, can eradicate gastric neuroendocrine tumours in patients with autoimmune chronic atrophic gastritis. British Journal of Clinical Pharmacology
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind; Brenna, Eiliv; Qvigstad, Gunnar; Fossmark, Reidar. (2016) Does long-term profound inhibition of gastric acid secretion increase the risk of ECL cell-derived tumors in man?. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Sagatun, Liv; Fossmark, Reidar; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Mjønes, Patricia. (2016) Follow-up of patients with ECL cell-derived tumours. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Sørdal, Øystein Finset. (2016) Classification of epithelial malignant tumors - The differentiation between adenocarcinomas and neuroendocrine carcinomas. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Calvete, Oriol; Mjønes, Patricia; Benitez, Javier; Waldum, Helge. (2016) ECL-cell carcinoids and carcinoma in patients homozygous for an inactivating mutation in the gastric H<sup>+</sup>K<sup>+</sup>ATPase alpha subunit. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel

2015

  • Waldum, Helge. (2015) Re: E-sigaretter – til skade eller nytte? :. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge. (2015) Re: E-sigaretter - til skade eller nytte?. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge; Hauso, Øyvind; Fossmark, Reidar. (2015) Letter: Proton pump inhibitors, hypergastrinaemia and the risk of gastric neoplasia. Alimentary Pharmacology and Therapeutics
    Brev til redaktøren
  • Grong, Eivind; Græslie, Hallvard; Munkvold, Bjørn; Arbo, Ingerid Brænne; Kulseng, Bård Eirik; Waldum, Helge. (2015) Gastrin secretion after bariatric surgery - response to a protein-rich mixed meal following roux-en-y gastric bypass and sleeve gastrectomy: a pilot study in normoglycemic women. Obesity Surgery
    Vitenskapelig artikkel
  • Hauso, Øyvind; Martinsen, Tom Christian; Waldum, Helge. (2015) 5-Aminosalicylic acid, a specific drug for ulcerative colitis. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Sagatun, Liv; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Waldum, Helge. (2015) Hypergastrinemia is associated with adenocarcinomas in the gastric corpus and shorter patient survival. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Waldum, Helge; Kleveland, Per Martin; Fossmark, Reidar. (2015) Upper gastrointestinal physiology and diseases. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

2014

  • Yang, Hang; Qi, Haili; Ren, Jingli; Cui, Jing; Li, Zhenfeng; Waldum, Helge. (2014) Involvement of NF-κB/IL-6 Pathway in the Processing of Colorectal Carcinogenesis in Colitis Mice. International Journal of Inflammation
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sagatun, Liv; Sandvik, Arne Kristian; Waldum, Helge. (2014) Serum gastrin in relation to localization and histological sub-classification of non-cardia adenocarcinomas in the stomach. Gastroenterology
    Sammendrag/abstract
  • Waldum, Helge; Hauso, Øyvind; Fossmark, Reidar. (2014) The regulation of gastric acid secretion - clinical perspectives. Acta Physiologica
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Ringnes, Eva; Nordbø, Helene; Sørdal, Øystein Finset; Nordrum, Ivar Skjåk; Hauso, Øyvind. (2014) The normal neuroendocrine cells of the upper gastrointestinal tract lack E-cadherin. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Østvik, Ann Elisabet; Sandvik, Arne Kristian; Damås, Jan Kristian; Waldum, Helge. (2014) Innate Immune Responses in Colonic Mucosa During Inflammatory Bowel Disease -Effects of TLR3 Signaling. NTNU
    Doktorgradsavhandling
  • Zeinali, Fatemeh; Hauso, Øyvind; Wiseth, Rune; Moufack, Marcel; Waldum, Helge. (2014) Venous plasma serotonin is not a proper biomarker for pulmonary arterial hypertension. Scandinavian Cardiovascular Journal
    Vitenskapelig artikkel
  • Sagatun, Liv; Jianu, Constantin-Sergiu; Fossmark, Reidar; Mårvik, Ronald; Nordrum, Ivar Skjåk; Waldum, Helge. (2014) The gastric mucosa 25 years after proxiaml gastric vagotomy. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind; Sørdal, Øystein Finset; Fossmark, Reidar. (2014) Gastrin May Mediate the Carcinogenic Effect of Helicobacter pylori Infection of the Stomach. Digestive Diseases and Sciences
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Gustafsson, Björn; Waldum, Helge. (2014) The PAS positive material in gastric cancer cells of signet ring type is not mucin. Experimental and molecular pathology (Print)
    Vitenskapelig artikkel

2013

  • Vigen, Alexander; Kodama, Yosuke; Viset, Trond; Fossmark, Reidar; Waldum, Helge; Kidd, Mark. (2013) Immunohistochemical evidence for an impairment of autophagy in tumorigenesis of gastric carcinoids and adenocarcinomas in rodent models and patients. Histology and Histopathology
    Vitenskapelig artikkel
  • Sørdal, Øystein; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Gustafsson, Björn; Waldum, Helge. (2013) In situ hybridization in human and rodent tissue by the use of a new and simplified method. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Zwiggelaar, Rosalie Theda Margien; Fossmark, Reidar; Kidd, Mark; Furnes, Marianne Waldum; Sandvik, Arne Kristian; Waldum, Helge. (2013) Tu1089 Somatostatin and the Slow-Growing Nature of Small Intestinal Neuroendocrine Tumors. Gastroenterology
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Granlund, Atle; Bugge, Marit; Nilsen, Nadra; Torp, Sverre Helge; Waldum, Helge. (2013) Enhanced expression of CXCL10 in inflammatory bowel disease: Potential role of mucosal toll-like 3 receptor stimulation. Inflammatory Bowel Diseases
    Vitenskapelig artikkel
  • Fossmark, Reidar; Skarsvåg, Espen Christoffer; Aarset, Harald; Hjort-Hansen, Henrik; Waldum, Helge. (2013) Symptomatic primary (Al) amyloidosis of the stomach and duodenum. Case Reports in Gastrointestinal Medicine
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, Malcolm; Bergh, Kåre; Munkvold, Bjørn. (2013) The Gastrin Receptor Antagonist Netazepide (YF476) Prevents Oxyntic Mucosal Inflammation Induced by Helicobacter Pylori Infection in Mongolian Gerbils. Helicobacter
    Vitenskapelig artikkel
  • Fossmark, Reidar; Waldum, Helge. (2013) Development of diffuse carcinomas in the gastric corpus in patients with rugal hyperplastic gastritis. International Journal of Cancer
    Leserinnlegg
  • Fossmark, Reidar; Suren, Pål; Waldum, Helge. (2013) Karakterer på medisinstudiet bør gjeninnføres. Dagens medisin
    Brev til redaktøren
  • Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Beisvag, Vidar; Waldum, Helge. (2013) Expression of Toll-like receptor-3 is enhanced in active inflammatory bowel disease and mediates the excessive release of lipocalin 2. Clinical and Experimental Immunology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Waldum, Helge. (2013) The effects of unilateral truncal vagotomy on gastric carcinogenesis in hypergastrinemic Japanese female cotton rats. Regulatory Peptides
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind. (2013) Gastric acid inhibitors may prevent/heal oxyntic lesions by reducing blood demand. Gut
    Leserinnlegg
  • Granlund, Atle Van Beelen; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, Ignat; Gustafsson, Björn; Kidd, Mark. (2013) Whole Genome Gene Expression Meta-Analysis of Inflammatory Bowel Disease Colon Mucosa Demonstrates Lack of Major Differences between Crohn's Disease and Ulcerative Colitis. PLOS ONE
    Vitenskapelig artikkel
  • Fossmark, Reidar; Waldum, Helge. (2013) The Distressing Overuse of Gastric Acid Inhibitors. Digestive Diseases and Sciences
    Leder
  • Zeinali, Fatemeh; Fossmark, Reidar; Hauso, Øyvind; Wiseth, Rune; Hjertner, Øyvind; Waldum, Helge. (2013) Serotonin in blood: Assessment of its origin by concomitant determination of beta-thromboglobulin (platelets) and chromogranin A (enterochromaffin cells). Scandinavian Journal of Clinical and Laboratory Investigation
    Vitenskapelig artikkel

2012

  • Jianu, Constantin-Sergiu; Lange, Ove Juel; Viset, Trond; Qvigstad, Gunnar; Martinsen, Tom Christian; Fougner, Reidun Lyngvi. (2012) Gastric neuroendocrine carcinoma after long-term use of proton pump inhibitor. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Fossmark, Reidar; Waldum, Helge. (2012) Gastric Carcinomas Localized to the Cardia. Gastroenterology Research and Practice
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, Arne Kristian; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. (2012) Withdrawing PPI Therapy: Response to Metz et al. American Journal of Gastroenterology
    Leserinnlegg
  • Vigen, Alexander; Kodama, Yosuke; Viset, Trond; Fossmark, Reidar; Waldum, Helge; Kidd, Mark. (2012) Impaired Autophagy in Gastric Carcinoids and Adenocarcinoma of Both Rodent Models and Patients. Gastroenterology
    Sammendrag/abstract
  • Fossmark, Reidar; Stunes, Astrid Kamilla; Petzold, Christiane; Waldum, Helge; Rubert, Marina; Lian, Aina-Mari. (2012) Decreased bone mineral density and reduced bone quality in H+/K+ ATPase beta-subunit deficient mice. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Boyce, M. (2012) Treatment of gastric carcinoids type 1 with the gastrin receptor antagonist netazepide (YF476) results in regression of tumours and normalisation of serum chromogranin A. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Waldum, Helge. (2012) Long-term use of proton pump inhibitors – consequences for the gastric mucosa. Best Practice Onkologi/Hematologi
    Fagartikkel
  • Granlund, Atle; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, I; Gustafsson, Björn; Kidd, M. (2012) Dissecting the IBD Transcriptome. Inflammatory Bowel Diseases
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Nilsen, Nadra; Granlund, Atle; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge. (2012) Enhanced expression of CXCL10 in inflammatory bowel disease-role of mucosal TLR3 stimulation. Journal of Crohn’s and Coltis Supplements
    Sammendrag/abstract
  • Fossmark, Reidar; Sørdal, O.J.; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. (2012) YF476, a Gastrin Receptor Antagonist, Causes Regression of Tumors and Normalizes Serum Chromogranin A in Patients with Type 1 Gastric Carcinoids. Neuroendocrinology
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge; Espevik, Terje. (2012) Induction of Lipocalin-2 in Colonic Epithelial Cells in Inflammatory Bowel Disease. Inflammatory Bowel Diseases
    Sammendrag/abstract
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Viset, Trond; Qvigstad, Gunnar; Sørdal, Øystein Finset; Mårvik, Ronald. (2012) Gastric carcinoids after long-term use of a proton pump inhibitor. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Riis, Åse Garløv; Martinsen, Tom Christian; Waldum, Helge; Fossmark, Reidar. (2012) Clinical experience with infliximab and adalimumab in a single-center cohort of patients with Crohn's disease. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, M; Bergh, Kåre; Qvigstad, Gunnar. (2012) The gastrin receptor antagonist YF476 prevents oxyntic mucosal inflammation due to Helicobacter pylori infection in Mongolian gerbils. Regulatory Peptides
    Sammendrag/abstract

2011

  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Syversen, Unni; Hauso, Øyvind; Fykse, Vidar; Waldum, Helge. (2011) Five-year follow-up of patients treated for 1 year with octreotide long-acting release for enterochromaffin-like cell carcinoids. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Qvigstad, Gunnar; Martinsen, Tom Christian; Hauso, Øyvind; Waldum, Helge. (2011) Animal models to study the role of long-term hypergastrinemia in gastric carcinogenesis. Journal of Biomedicine and Biotechnology
    Vitenskapelig oversiktsartikkel/review
  • Stunes, Astrid Kamilla; Reseland, Janne Elin; Hauso, Øyvind; Kidd, Mark; Tømmerås, Karin; Waldum, Helge. (2011) Adipocytes express a functional system for serotonin synthesis, reuptake and receptor activation. Diabetes, obesity and metabolism
    Vitenskapelig artikkel
  • Granlund, Atle Van Beelen; Beisvag, Vidar; Torp, Sverre Helge; Flatberg, Arnar; Kleveland, Per Martin; Østvik, Ann Elisabet. (2011) Activation of REG family proteins in colitis. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Benestad, Sylvie Lafond; Moldal, Torfinn; Waldum, Helge. (2011) Inhibitors of gastric acid secretion increase the risk of prion infection in mice. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Gustafsson, Björn; Bakke, Ingunn; Hauso, Øyvind; Kidd, Mark; Modlin, Irvin M; Fossmark, Reidar. (2011) Parietal cell activation by arborization of ECL cell cytoplasmic projections is likely the mechanism for histamine induced secretion of hydrochloric acid. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

2010

  • Waldum, Helge; Martinsen, Tom Christian; Hauso, Øyvind; Qvigstad, Gunnar. (2010) Oral proton-pump inhibitors and step-down therapy for nonulcer dyspepsia: is this the right approach?. Therapeutic Advances in Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, Gunnar; Fossmark, Reidar; Kleveland, Per Martin; Sandvik, Arne Kristian. (2010) Rebound acid hypersecretion from a physiological, pathophysiological and clinical viewpoint. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2010) Protonpumpehemmere bør ikke selges reseptfritt. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Syversen, Unni; Hauso, Øyvind; Waldum, Helge. (2010) A meal test improves the specificity of chromogranin A as a marker of neuroendocrine neoplasia. Tumour Biology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Herter, Ralph; Dybdahl, Jan H.; Waldum, Helge. (2010) Bruk av TNF-ɑ-antistoff ved inflammatorisk tarmsykdom. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Hauso, Øyvind. (2010) PPI-induced hypergastrinaemia and Barrett's mucosa: the fog thickens. Gut
    Leserinnlegg
  • Waldum, Helge L.; Hauso, Øyvind; Sandvik, AK. (2010) PPI-induced hypergastrinemia and Barrett's mucosa: the fog thickens. Gut
    Leserinnlegg
  • Martinsen, Tom Christian; Skogaker, Nan E Tostrup; Fossmark, Reidar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Bendheim, Marianne Østensen. (2010) Neuroendocrine Cells in Diffuse Gastric Carcinomas: An Ultrastructural Study With Immunogold Labeling of Chromogranin A. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Waldum, Helge; Nordrum, Ivar Skjåk; Hauso, Øyvind; Fossmark, Reidar. (2010) Long-term gastric changes in achlorhydric H+/K+-ATPase beta subunit deficient mice. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Benestad, Sylvie Lafond; Moldal, Torfinn; Waldum, Helge. (2010) Inhibitors of Gastric Acid Secretion Increase the Risk of Prion Infection in Mice. Prion
    Sammendrag/abstract

2009

  • Waldum, Helge. (2009) This month in the Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian. (2009) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Jianu, Constantin-Sergiu; Fossmark, R; Syversen, U; Hauso, O; Waldum, H. (2009) A Meal-Test Improves the Specificity of Chromogranin A as a Marker of Neuroendocrine Neoplasia. Neuroendocrinology
    Sammendrag/abstract
  • Waldum, Helge. (2009) Proton pump inhibitors should not be sold without prescription. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Bakkelund, Karin Elvenes; Fossmark, Reidar; Nordrum, Ivar Skjåk; Waldum, Helge. (2009) Effect of antrectomy in hypergastrinaemic female Japanese cotton rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Haram, Per Magnus; Kemi, Ole Johan; Lee, SJ; Bendheim, MO; Al-Share, QY; Waldum, HL. (2009) Aerobic interval training vs. continuous moderate exercise in the metabolic syndrome of rats artificially selected for low aerobic capacity. Cardiovascular Research (CVR)
    Vitenskapelig artikkel
  • Tsolakis, Apostolos V; Grimelius, Lars; Stridsberg, Mats; Falkmer, Sture Emil; Waldum, Helge; Saras, Jan. (2009) Obestatin/ghrelin cells in normal mucosa and endocrine tumours of the stomach. European Journal of Endocrinology (EJE)
    Vitenskapelig artikkel

2008

  • Waldum, Helge; Qvigstad, G; Martinsen, TC; Fossmark, R. (2008) Controversies in the management of gastro-oesophageal diseases. Are all the gastric polyps 'bad'?. Scandinavian Journal of Gastroenterology
    Sammendrag/abstract
  • Waldum, Helge; Sandvik, Arne Kristian; Brenna, Eiliv; Fossmark, Reidar; Qvigstad, Gunnar; soga, j. (2008) Classification of tumours. Journal of Experimental and Clinical Cancer Research
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2008) Editorial August issue of Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Fossmark, Reidar; Qvigstad, Gunnar; Waldum, Helge. (2008) Gastric cancer: Animal studies on the risk of hypoacidity and hypergastrinemia. World Journal of Gastroenterology (WJG)
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian. (2008) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Qvigstad, Gunnar; Kolbjørnsen, Øyvor; Skancke, Ellen Margrete; Waldum, Helge. (2008) Gastric Neuroendocrine Carcinoma Associated with Atrophic Gastritis in the Norwegian Lundehund. Journal of Comparative Pathology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjorn; Kidd, Mark; Waldum, Helge; Drozdov, Ignat; Chan, Anthony. (2008) Neuroendocrine tumor epidemiology: contrasting Norway and North America. Cancer
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Munkvold, Bjørn; Waldum, Helge. (2008) Release of neuroendocrine products in the pulmonary circulation during intermittent hypoxia in iisoltaed rat lung. Respiratory Physiology & Neurobiology
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Munkvold, Bjørn; Waldum, Helge. (2008) Release of neuroendocrine products in the pulmonary circulation during intermittent hypoxia in isolated rat lung. Respiratory Physiology & Neurobiology
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Kusnierczyk, Waclaw; Langaas, Mette; Ylving, S; Fossmark, Reidar. (2008) Changes in gene expression of gastric mucosa during therapeutic acid inhibition. European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Jianu, CS; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2008) Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton-pump inhibition. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bye, Anja; Sørhaug, Sveinung; Ceci, Marcello; Høydal, Morten; Stølen, Tomas; Heinrich, Garrett. (2008) Carbon monoxide levels experienced by heavy smokers impair aerobic capacity and cardiac contractility and induce pathological hypertrophy. Inhalation Toxicology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjørn; Nordrum, Ivar Skjåk; Waldum, Helge. (2008) The Effect of Terguride in Carbon Tetrachloride (CCL4)-Induced Liver Fibrosis in Rat. Experimental biology and medicine
    Vitenskapelig artikkel

2007

  • Fossmark, Reidar; Waldum, Helge. (2007) Rebound acid hypersecretion. Alimentary Pharmacology and Therapeutics
    Leserinnlegg
  • Waldum, Helge; Qvigstad, Gunnar. (2007) Proton pump inhibitors and gastric neoplasia. Gut
    Brev til redaktøren
  • Fossmark, Reidar; Brenna, E; Waldum, HL. (2007) pH 4.0. Scandinavian Journal of Gastroenterology
    Leder
  • Cui, Guanglin; Waldum, HL. (2007) Physiological and clinical significance of enterochromaffin-like cell activation in the regulation of gastric acid secretion. World Journal of Gastroenterology (WJG)
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2007) Fundic gland polyps induced by proton pump inhibition are not realted to the level of hypergastrinemia and serum chromogranin A is affected by meals. Gastroenterology
    Sammendrag/abstract
  • Hauso, Øyvind; Gustafsson, Bjørn; Loennechen, Jan Pål; Stunes, Astrid Kamilla; Nordrum, Ivar Skjåk; Waldum, Helge. (2007) Long-term serotonin effects in the rat are prevented by terguride. Regulatory Peptides
    Vitenskapelig artikkel
  • Erlandsen, Sten Even; Fykse, Vidar; Waldum, Helge; Sandvik, Arne Kristian. (2007) Octreotide induces apoptosis in the oxyntic mucosa. Molecular and Cellular Endocrinology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2007) Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton pump inhibition. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Haaverstad, Rune; Nordrum, Ivar Skjåk; Martinsen, Tom Christian; Waldum, Helge. (2007) Expression of neuroendocrine markers in non-small cell lung cancer. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjørn; Waldum, Helge. (2007) Long slender cytoplasmic extensions: A common feature of neuroendocrine cells?. Journal of Neuroendocrinology (JNE)
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, Gunnar. (2007) Gastric neuroendocrine carcinomas associated with atrophic gastritis in the Norwegian lundehund (puffin dog). Carcinogenesis
    Vitenskapelig artikkel
  • Nørsett, Kristin; Syversen, Unni; Waldum, Helge; Sandvik, Arne Kristian. (2007) Kromograninenes rolle i sekresjon fra neuroendokrine celler og som markør for neuroendokrin neoplasi. NBS-nytt
    Vitenskapelig artikkel
  • Bendheim, Marianne Østensen; Fossmark, Reidar; Waldum, Helge; Martinsen, Tom Christian. (2007) Morphology of g cells in hypergastrinemic cotton rats. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Westbroek, I; Waarsing, JH; van Leeuwen, JPTM; Waldum, Helge; Reseland, JE; Weinans, H. (2007) Long-term fluoxetine administration does not result in major changes in bone architecture and strength in growing rats. Journal of Cellular Biochemistry
    Vitenskapelig artikkel

2006

  • Waldum, Helge. (2006) Assessment of the risk of iatrogenic hypergastrinaemia from patients with gastrinoma. Basic & Clinical Pharmacology & Toxicology
    Leserinnlegg
  • Jianu, Constantin; Qvigstad, Gunnar; Waldum, Helge. (2006) Synergistic adenocarcinoma and carcinoid. Journal of Gastrointestinal and Liver Diseases
    Brev til redaktøren
  • Fossmark, Reidar; Brenna, Eiliv; Waldum, Helge. (2006) pH 4.0. Scandinavian Journal of Gastroenterology
    Brev til redaktøren
  • Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Ellingsen, Øyvind. (2006) The effects of long-term carbon monoxide exposure on the cardiovascular system in rats. Atherosclerosis Supplements
    Sammendrag/abstract
  • Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Ellingsen, Øyvind. (2006) The effect of long-term carbon monoxide exposure on cardiovascular function in rats. European Journal of Cardiovascular Prevention & Rehabilitation
    Sammendrag/abstract
  • Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2006) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Waldum, Helge. (2006) Gastric juice - a natural-born killer. Alimentary Pharmacology and Therapeutics
    Leserinnlegg
  • Waldum, Helge. (2006) Juks i medisinsk forskning. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Brev til redaktøren
  • Sørhaug, Sveinung; Langhammer, Arnulf; Hveem, Kristian; Waldum, Helge; Steinshamn, Sigurd Loe. (2006) Increased serum levels of chromogranin A in male smokers with airway obstruction. European Respiratory Journal
    Vitenskapelig artikkel
  • Fykse, Vidar; Solligård, Erik; Bendheim, Marianne Østensen; Chen, Duan; Grønbech, Jon Erik; Sandvik, Arne Kristian. (2006) ECL cell histamine mobilization and parietal cell stimulation in the rat stomach studied by microdialysis and electron microscopy. Acta Physiologica
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Westbroek, I; Waarsing, JH; Waldum, Helge; Solligård, Erik; Brunsvik, Anders. (2006) Long-term serotonin administration leads to higher bone mineral density, affects bone architecture, and leads to higher femoral bone stiffness in rats. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Bakke, Ingunn; Tømmerås, Karin; Waldum, Helge. (2006) A new method for visualization of gut mucosal cells, describing the enterochromaffin cell in the rat gastrointestinal tract. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Linder, S; Myrvold, K; Falkmer, Ursula; Qvigstad, Gunnar; Waldum, Helge; Falkmer, Sture Emil. (2006) Neuroendocrine cells in pancreatic duct adenocarcinoma: an immunohistochemical study. Journal of Experimental and Clinical Cancer Research
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Nilsen, Odd Georg; Waldum, Helge. (2006) Chronic inhalation of carbon monoxide: Effects on the respiratory and cardiovascular system at doses corresponding to tobacco smoking. Toxicology
    Vitenskapelig artikkel
  • Waldum, Helge; Martinsen, Tom Christian. (2006) Tobacco and cancer in the digestive tract. S. Karger
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Bakke, Ingunn. (2006) Gastrin and cell proliferation.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Qvigstad, Gunnar; Hatlen-Rebhan, Peter; Brenna, Eiliv; Waldum, Helge. (2006) Capsule endoscopy in clinical routine in patients with suspected disease of the small intestine: a 2-year prospective study. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Fossmark, Reidar; Nordrum, Ivar Skjåk; Waldum, Helge. (2006) Signet ring cells in gastric carcinomas are derived from neuroendocrine cells. Journal of Histochemistry and Cytochemistry
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Thommesen, Liv; Tømmeras, K; Stunes, Astrid Kamilla; Tømmerås, Karin; Westbroek, Irene. (2006) Serotonin and fluoxetine modulate bone cell function in vitro. Journal of Cellular Biochemistry
    Vitenskapelig artikkel

2005

  • Waldum, Helge. (2005) Korrupt forskning kan skade folkehelsen. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge. (2005) Hypergastrinaemia in patients infected with Helicobacter pylori treated with proton pump inhibitors. Gut
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian; Brenna, Eiliv. (2005) Nonulcer dyspepsia and proton pump inhibitors. Gastroenterology
    Leserinnlegg
  • Waldum, Helge; Fossmark, Reidar. (2005) Idiopathic gastric acid hypersecretion. European Journal of Gastroenterology and Hepathology
    Brev til redaktøren
  • Westbroek, I; Gustafsson, Bjørn; Waarsing, E; Waldum, Helge; Weinans, H; van Leeuwen, JPT. (2005) Neurotransmitter, serotonin, affects cortical bone architecture in rat femur. Bone
    Sammendrag/abstract
  • Gustafsson, Bjørn; Warsing, E; Van Leeuwen, H; Stunes, Astrid Kamilla; Thommesen, Liv; Waldum, Helge. (2005) Anti-depressants, depressing effects on bone?. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Gustafsson, Bjørn; Westbroek, I; Waarsing, E; Thommesen, Liv; Stunes, Astrid Kamilla; Waldum, Helge. (2005) Long-term serotonin administration affects cortical bone architecture and increases bone mineral density in rats. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Waldum, Helge. (2005) Nobelpris for Helicobacter pylori. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leder
  • Waldum, Helge; Gustafsson, Bjørn; Fossmark, Reidar; Qvigstad, Gunnar. (2005) Antiulcer drugs and gastric cancer. Digestive Diseases and Sciences
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Bergh, Kåre; Waldum, Helge. (2005) Gastric juice: A barrier against infectious diseases. Basic & Clinical Pharmacology & Toxicology
    Vitenskapelig oversiktsartikkel/review
  • Nørsett, Kristin; Lægreid, Astrid; Langaas, Mette; Wørlund, Sara Maria; Fossmark, Reidar; Waldum, Helge. (2005) Molecular characterization of rat gastric mucosal response to potent acid inhibition. Physiological Genomics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Johnsen, Geir; Waldum, Helge; Johannesen, Eli Marie. (2005) Rebound acid hypersecretion after long-term inhibition of gastric acid secretion. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Qvigstad, Gunnar; Bendheim, Marianne Østensen; Kopstad, G.; Kashima, K. (2005) Ultrastructure and chromogranin A immunogold labelling of ECL cell carcinoids. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Tømmerås, Karin; Nordrum, Ivar Skjåk; Loennechen, Jan Pål; Brunsvik, Anders; Solligård, Erik. (2005) Long-term serotonin administration induces heart valve disease in rats. Circulation
    Vitenskapelig artikkel
  • Fossmark, Reidar; Zhao, Chun-Mei; Martinsen, Tom Christian; Kawase, Shiro; Chen, Duan; Waldum, Helge. (2005) Dedifferentiation of enterochromaffin-like cells in gastric cancer of cotton rats. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bakke, Ingunn; Chen, Duan; Sandvik, Arne Kristian; Zahlsen, Kolbjørn; Aamo, T.. (2005) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPAR-alfa. American Journal of Physiology - Gastrointestinal and Liver Physiology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Fossmark, Reidar; Martinsen, Tom Christian; Kawase, Shiro; Chen, Duan; Waldum, Helge. (2005) Dedifferentiation of enterochromaffin-like cells in gastric cancer of hypergastrinemic cotton rats. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Fykse, Vidar; Sandvik, Arne Kristian; Waldum, Helge. (2005) A one-year follow-up study of patients with ECL cell carcinoids after treatment with octreotide LAR. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fykse, Vidar; Coy, JH; Waldum, Helge; Sandvik, Arne Kristian. (2005) The effect of the somatostatin-receptor 2 (SSTR2) on exocrine and endocrine secretion of the rat stomach. British Journal of Pharmacology
    Vitenskapelig artikkel
  • Waldum, Helge. (2005) Norsk lærebok i gastrointestinal ultralydundersøkelse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Anmeldelse
  • Waldum, Helge; Fossmark, Reidar; Qvigstad, Gunnar; Bakkelund, Karin Elvenes; Kawase, S. (2005) The Japanese cotton rat develops spontaneously an ECL cell derived gastric carcinoma.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Petersen, H; Schumacher, KP; Waldum, HL; Berstad, A; Florholmen, Jon; Selbekk, B. (2005) Gjensidig evaluering som kvalitetssikringsmetode for sykehusenheter. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2005) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
    Vitenskapelig oversiktsartikkel/review

2004

  • Waldum, Helge; Fossmark, R; Bakke, Ingunn; Martinsen, Tom Christian; Qvigstad, G. (2004) Hypergastrinemia in animals and man: Causes and consequences. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Qvigstad, Gunnar; Fløttum, O; Waldum, Helge. (2004) Kapselendoskopi-en ny metode for diagnostikk av sykdom i tynntarm. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bergh, Kåre; Waldum, Helge. (2004) Gastric juice: A barrier against infectious disease. Basic & Clinical Pharmacology
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Waldum, Helge. (2004) Rebound hypersecretion after inhibition of gastric acid secretion. Basic & Clinical Pharmacology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Bakkelund, Karin Elvenes; Kawase, S; Waldum, Helge. (2004) ECL-cell derived gastric cancer in male cotton rats dosed with the H2-blocker loxtidine. Cancer Research
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Torp, Sverre Helge; Kawase, S; Sandvik, Arne Kristian; Waldum, Helge. (2004) Spontaneous enterochromaffin-like cell carcinomas in cotton rats (Sigmodon hispidus) are prevented by a somatostatin analogue. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Viste, Asgaut; Øvrebø, Kjell; Maartman-Moe, Helga; Waldum, Helge. (2004) Lanzoprazole promotes gastric carcinogenesis in rats with duodenogastric reflux. Gastric Cancer
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Midelfart, Herman; Erlandsen, Sten Even; Falkmer, Sture Emil; Grønbech, Jon Erik. (2004) Gene expression based classification of gastric carcinoma. Cancer Letters
    Vitenskapelig artikkel
  • Syversen, Unni; Ramstad, H; Gamme, K; Qvigstad, G; Falkmer, Sture Emil; Waldum, Helge. (2004) Clinical significance of elevated serum chromogranin A levels. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fykse, Vidar; Sandvik, Arne Kristian; Qvigstad, Gunnar; Falkmer, Sture Emil; Syversen, Unni; Waldum, Helge. (2004) Treatment of ECL cell carcinoids with octreotide LAR. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fossmark, R; Martinsen, Tom Christian; Bakkelund, Karin Elvenes; Kawase, S; Torp, Sverre Helge; Waldum, Helge. (2004) Hypergastrinaemia induced by partial corpectomy results in development of enterochromaffin-like cell carcinoma in male Japanese cotton rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Viste, Asgaut; Øvrebø, Kjell; Maartmann-Moe, Helga; Waldum, Helge. (2004) Lanzoprazole promotes gastric carcinogenesis in rats with duodenogastric reflux. Gastric Cancer
    Vitenskapelig artikkel
  • Brenna, Ø; Qvigstad, G.; Brenna, Eiliv; Waldum, Helge. (2004) Cytotoxicity of streptozotocin on neuroendocrine cells of the pancreas an the gut. Digestive Diseases and Sciences
    Vitenskapelig artikkel

2003

  • Gustafsson, Bjørn; Thommesen, Liv; Waldum, Helge; Syversen, Unni. (2003) Serotonin affects bone metabolism in vitro and leads to increased bone mineral density (BMD) in female rats. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Waldum, Helge. (2003) Protonpumpehemmere og kronisk behov. Läkartidningen
    Kronikk
  • Hoff, J.M.; Waldum, Helge. (2003) Klinisk ledelse og akademisk kompetanse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (2003) Autoritært styre uten autoritet og legimitet. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Brenna, E. (2003) Discussion on the effect of chronic hypergastrinemia on human enterochromaffin-like cells: insights from patients with sporadic gastrinomas. Gastroenterology
    Kronikk
  • Waldum, Helge. (2003) Acute cholestatic hepatitis associated with celocoxib. The Annals of Pharmacotherapy
    Kronikk
  • Waldum, Helge; Qvigstad, G; Sandvik, Arne Kristian. (2003) Reg protein in gastric cancer tumour cells. FEBS Letters
    Kronikk
  • Grav, Hans J; Tronstad, Karl J.; Gudbrandsen, Oddrun A.; Berge, Kjetil; Fladmark, Kari E.; Martinsen, Tom C.. (2003) Changed energy state and increased mitochondrial beta-oxidation rate in liver of rats associated with lowered proton electrochemical potential and stimulated uncoupling protein 2 (UCP-2) expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Loenneche, Jan P.; Nilsen, Odd Georg; Arbo, Ingerid; Aadahl, Petter; Nilsen, Turid; Waldum, Helge. (2003) Chronic Exposure to Carbon Monoxide and Nicotine: Endothelin ETA Receptor Antagonism Attenuates Carbon Monoxide-Induced Myocardial Hypertrophy in Rat. Toxicology and Applied Pharmacology
    Vitenskapelig artikkel
  • Bakke, Ingunn; Yadetie, Fekadu; Sandvik, Arne Kristian; Kusnierczyk, W; Waldum, Helge; Lægreid, Astrid. (2003) DNA microarray analysis of liver gene expression in rats after longterm treatment with ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Waldum, C.; Zhao, C.M.; Waldum, Helge; Halgunset, Jostein; Chen, Duan. (2003) Cheese-induced body weight is not accompained by an increase of gastric cells producing leptin, ghrelin, gastrin, or pancreastatin in mice. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Skogaker, Nan Elisabeth Tostrup; Waldum, Helge. (2003) Antral G-cells in rats during dosing with PPARa agonist: a morphometric and immunocytohcemical study. Medical Electron Microscopy
    Vitenskapelig artikkel
  • Zhao, C-M; Wang, X.; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection results in gastric hypoacidity and hypergastrinemia in wild-type mice but vagally induced hypersecretion in gastroindeficient mice. Regulatory Peptides
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-{alpha} agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Torp, S; Waldum, Helge. (2003) Spontaneous ECL cell carcinomas in cotton rats are prevented by a somatostatin analouge. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Midelfart, H; Yadetie, Fekadu; Erlandsen, S.E.; Falkmer, Sture Emil. (2003) Gene expression based classification of gastric carcinoma. Cancer Letters
    Vitenskapelig artikkel
  • Grav, H.J.; Tronstad, K.J.; Gudbrandsen, O.A.; Berge, K; Fladmark, K.E.; Martinsen, Tom Christian. (2003) Changed energy state and increased mitochondrial beta-oxidation rate in liver of rats associated with lowered proton electrochemical potential and stimulated uncoupling protein 2 (UCP-2) expression. Evidence for peroxisome proliferator-activated receptor-alfa independent induction of UCP-2 expression. Evidence for peroxisome proliferator-activated receptor-alfa independt of UCP-2 expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bakke, I; Chen, Duan; Aamo, T; Zahlsen, Kolbjørn; Waldum, Helge. (2003) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPARa receptors. Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Kawase, Shiro; Håkanson, R; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G. (2003) SpontaneousECL cell carcinomas in cotton rats. Natural course and the effect of a gastrin receptor antagonist. Carcinogenesis
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, I; Kusnierczyk, W; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor alpha agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Kawase, Shiro; Håkanson, Rolf; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G. (2003) Spontaneous ECL cell carcinomas in cotton rats: natural course and prevention by a gastrin receptor antagonist. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Camilla; Zhao, Chun-Mei; Waldum, Helge; Halgunset, Jostein; Chen, Duan. (2003) Cheese-induced body weight gain is not accompanied by an increase of gastric cells producing leptin, gastrin, or pancreastatin in mice. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Wang, X; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection results in gastric hypoacidity and hypergastrinemia in wild-type mice but vagally induced hypersecretion in gastrin-deficient mice. Regulatory Peptides
    Vitenskapelig artikkel
  • Grav, Hans J; Tronstad, Karl Johan; Gudbrandsen, Oddrun; Berge, Kjetil; Fladmark, Kari Espolin; Martinsen, Tom C. (2003) Changed Energy State and Increased Mitochondrial B-Oxidation Rate in Liver of Rats Associated with Lowered Proton Electrochemical Potential and Stimulated Uncoupling Protein 2 (UCP-2) Expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-alpha agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel

2002

  • Waldum, Helge; Sandvik, Arne Kristian. (2002) GRP and stimulation of acid secretion. Gut
    Kronikk
  • Waldum, Helge. (2002) Irritabel tarm - oppspinn eller gravalvor?. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Brenna, Eiliv. (2002) Gastro-oesophageal reflux disease in general practice. Last year's guidelines are probably biased. BMJ. British Medical Journal
    Kronikk
  • Bofin, Anna M.; Waldum, Camilla; Qvigstad, G; Waldum, Helge. (2002) Neuroendocrine differentiation in carcinoma of the breast. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Cui, Guanglin; Sandvik, Arne Kristian; Munkvold, Bjørn; Waldum, Helge. (2002) Glycine-extended gastrin-17 stimulates acid secretion only via CCK-2 receptor-induced histamine release in the totally isolated vascularly perfused rat stomach. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge. (2002) Legemiddelbehandling av irritabel tarmsyndrom. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Cui, Guanglin; Sandvik, Arne Kristian; Munkvold, Bjørn; Waldum, Helge. (2002) Effects of anaesthetic agents on gastrin-stimulated and histamine-stimulated gastric acid secretion in the totally isolated vascularly perfused rat stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Syversen, Unni; Bakke, Ingunn. (2002) The cellular localization of the cholecystokinin 2 (gastrin) receptor in the stomach. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Qvigstad, G; Qvigstad, Tor; Westre, Bjørn; Sandvik, Arne Kristian; Brenna, Eiliv; Waldum, Helge. (2002) Neuroendocrine differentiation in gastric adenocarcinomas associated with severe hypergastrinemia and/or pernicious anemia. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • van Bergeijk, Jeroen D; Wilson, Paul JH; Haage Nielsen, Ole; von Tirpitz, Christian; Karvonen, Anna-Lusa; Lygren, Idar. (2002) Octreotide in patients with active ulcerative colitis treated with high dose corticosteroids (OPUS 1). European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Bakke, Ingunn; Hammer, Tommy Arild; Sandvik, Arne Kristian; Waldum, Helge. (2002) PPAR alpha stimulates the rat gastrin-producing cell. Molecular and Cellular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge. (2002) Funksjonelle mage- og tarmlidelser. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Taylor, David M; Johnsen, Roar; Waldum, Helge. (2002) Gastric acidity protects mice against prion infection. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Tømmerås, Karin; Bakke, Ingunn; Sandvik, Arne Kristian; Larsson, Erik; Waldum, Helge. (2002) Rat parietal cell express CCK-2 receptor mRNA: gene expression analysis of single cells isolated by laser-assisted microdissection. Biochemical and Biophysical Research Communications - BBRC
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, Arne Kristian. (2002) Long-term safety of proton pump inhibitors: risks of gastric neoplasia and infections. Expert Opinion on Drug Safety
    Vitenskapelig artikkel
  • Waldum, Helge; Martinsen, Tom Christian. (2002) Magesyre beskytter mot kugalskap. Gemini
    Populærvitenskapelig artikkel

2001

  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Letter to the editor. Virchows Archiv
    Kronikk
  • Martinsen, T.C.; Waldum, Helge. (2001) Menneskegalskap eller kugalskap?. Under dusken : studentavisa i Trondheim
    Kronikk
  • Waldum, Helge. (2001) Serum chromogranin A in the control of patients on long-term treatment with inhibitors of acid secretion. European Journal of Clinical Investigation
    Kronikk
  • Waldum, Helge. (2001) Medisinstudiet gir for liten biologisk kompetanse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Chen, Duan; Zhao, Chun-Mei; Falkmer, Sture Emil; Waldum, Helge; Syder, Andrew; Gordon, Jeffrey. (2001) Ablation of Parietal Cells Is Associated with ECL-cell Hyperplasia in Transgenic Mice with a Genetically Engineered Ablation of Their Parietal Cell Lineage. Gastroenterology
    Vitenskapelig artikkel
  • Kleveland, Ola; Syversen, Unni; Slørdahl, Kari; Waldum, Helge. (2001) Enterochromaffin-like (ECL) cell hyperplasia/neoplasia as a source of chromogranin A (CgA) increase in blood. Digestion
    Vitenskapelig artikkel
  • Cui, Guanglin; Syversen, Unni; Zhao, Chun-Mei; Chen, Duan; Waldum, Helge. (2001) Long-term omeprazole treatment suppress body weight gain and bone mineralization in young male rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Bakke, Ingunn; Torp, Sverre Helge; Qvigstad, G; Brenna, Eiliv; Sandvik, Arne Kristian. (2001) Effects of the peroxisome proliferator ciprofibrate and the somatostatin analogue octreotide alone or in combination on the rat liver. Recent Advances and Research Updates
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat by inducing histamine release. American Journal of Physiology
    Vitenskapelig artikkel
  • Cui, G.-L.; Syversen, Unni; Chao, Chun-Mei; Chen, Duan; Waldum, Helge. (2001) Long-term Omeprazole treatment Suppresses Body Weight Gain and Bone Mineralization in Young Male Rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Bakke, Ingunn; Skogaker, Nan Elisabeth Tostrup; Waldum, Helge; Håkanson, Rolf; Chen, Duan. (2001) Functionally impaired, hypertrophic ECL cells accumulate vacuoles and lipofuscin bodies. An ultrastructural study of ECL cells isolated from hypergastrinemic rats. Cell and Tissue Research
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Indications for a neuroendocrine tumor-carcinoma sequence. Virchows Archiv
    Vitenskapelig artikkel
  • Bakke, Ingunn; Qvigstad, G; Sandvik, Arne Kristian; Waldum, Helge. (2001) The CCK-2 receptor is located on the ECL cell, but not on the parietal cell. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Bakke, Ingunn; Tostrup-Skogaker, Nan; Waldum, Helge; Håkanson, Rolf; Chen, Duan. (2001) Functionally impaired, hypertrophic ECL cells accumulate vacuoles and lipofuscin bodies. An ultrastructural study of ECL cells isolated from hypergastrinemic rats. Cell and Tissue Research
    Vitenskapelig artikkel
  • Bakke, Ingunn; Qvigstad, G; Waldum, Helge. (2001) Biologically active CCK-2 receptors are located on the ECL cell, but not on the parietal cell. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fresvig, Anne; Qvigstad, Gunnar; Halvorsen, Tore Bøhmer; Falkmer, Sture Emil; Waldum, Helge. (2001) Neuroendocrine differentiation in bronchial carcinomas of classical squamous cell-type. An immunohistochemical study of 29 cases, applying the tyramid signal amplification technique. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Waldum, Helge. (2001) The safety of proton pump inibitors. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Letter to the Editor. Virchows Archiv
    Vitenskapelig artikkel
  • Waldum, Helge; Syversen, Unni. (2001) Serum chromogranin A in the control of patients on long-term treatment with inhibitors of acid secretion. European Journal of Clinical Investigation
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv. (2001) Reply: on gastric polyps, proton pump inhibitors and long-term risks. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Munkvold, Bjørn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat, but also in man. Gastroenterology
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Munkvold, Bjørn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat by histamine release and a direct effect on the parietal cell. Gastroenterology
    Vitenskapelig artikkel
  • Syversen, Unni; Bakke, I; Slørdahl, KW; Waldum, HL. (2001) The PPAR-alpha agonist Wyeth 14643 increases bone mineral density in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel

2000

  • Waldum, Helge; Martinsen, T.C.; Brenna, Eiliv. (2000) Safety of proton pump inhibitors. Alimentary Pharmacology and Therapeutics
    Kronikk
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (2000) The mechanism of histamine secretion from gastric enterochromaffin-like cells. American Journal of Physiology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Brenna, Eiliv. (2000) The mechanism of histamine secretion from gastric enterochromaffin-like cells. American Journal of Physiology
    Kronikk
  • Bakke, Ingunn; Sandvik, AK; Waldum, Helge. (2000) Octreotide inhibits the enterochromaffin-like cell, but not peroxisome proliferator-induced hypergastrinemia. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv. (2000) Rewiev article: is profound inhibition safe. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Qvigstad, G; Falkmer, Sture Emil; Waldum, Helge. (2000) Immunhistokjemisk diagnostikk ved bruk av tyramid signalamplifikasjon. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Brenna, Eiliv; Flaaten, Borgar; Waldum, Helge; Myrvold, Helge Elliot. (2000) Behandling av oesophagusvaricer med strikkligatur. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Bakke, Ingunn; Qvigstad, G; Brenna, Eiliv; Sandvik, AK; Waldum, Helge. (2000) Gastrin has a specific proliferative effect on the rat enterochromaffin-like cell, but not on the parietal cell: a study by elutriation centrifugation. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Cui, Guanglin; Falkmer, Sture Emil; Sandvik, AK; Kawase, Shiro; Waldum, Helge. (2000) Spontaneous ECL omas in cotton rats (Sigmodon hispidus): tumours occurring in hypoacidic/hypergastrinemic animals with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Helge; Mårvik, Ronald; Grønbech, Jon Erik; Sandvik, AK; Aase, Steinar. (2000) Oxyntic lesions may be provoked in the rat both by the process of acid secretion and also by gastric acidity. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Guanglin, Cui; Qvigstad, G; Falkmer, Sture Emil; Sandvik, AK; Kawase, Shiro; Waldum, Helge. (2000) Spontaneous ECLomas in cotton rats (Sigmodon hispidus): tumours occurring in hypoacidic/hypergastrinaemic animals with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Qvigstad, G; Sandvik, AK; Brenna, Eiliv; Falkmer, Sture Emil; Waldum, Helge. (2000) Detection of chromogranin A in human gastric adenocarcinomas using a sensitive immunohistochemical technique. The Histochemical Journal
    Vitenskapelig artikkel
  • Qvigstad, G; Qvigstad, Tor; Westre, Bjørn; Sandvik, AK; Brenna, Eiliv; Waldum, Helge. (2000) Neuroendocrine differentiation in gastric adenocarcinomas associated with severe hypergastrinemia. Cancer Detection and Prevention
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Falkmer, Sture Emil; Waldum, Helge. (2000) Immunhistokjemisk diagnostikk ved bruk av tyramid-signalamplifikasjon. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Cui, G; Qvigstad, Gunnar; Falkmer, Sture Emil; Sandvik, Arne Kristian; Kawase, S; Waldum, Helge. (2000) Spontaneous ECLomas in cotton rats (Sigmodon hispidus): Tumours occurring in hypoacidic/hypergastrinaemic animal's with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Helge. (2000) Karsinoider i ventrikkelen. Norsk Neuroendokrin Tumor Gruppe
    Rapport
  • Syversen, Unni; Waldum, HL; Slørdahl, K; Chen, D. (2000) Synergistic effects of the pesticides toxaphene and dieldrin on bone mineral density in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel

1999

  • Waldum, Helge; Syversen, Unni. (1999) Comments on "Prospective study of the value of serum chromogranin A or serum gastrin levels in the assessment of the presence, extent or growth of gastrinomas". Cancer
    Kronikk
  • Waldum, Helge; Qvigstad, G; Sandvik, AK. (1999) Letter to the editor. Authors' reply. Journal of Pathology
    Kronikk
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Risiko ved medikamentell syrehemming. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Jørgensen, Georg; Waldum, Helge. (1999) Lack f effect of transdermal nicotine on 3 cases of primary sclerosing cholangitis. Digestive Diseases and Sciences
    Kronikk
  • Waldum, Helge. (1999) ECL cell tumor and endocrine carcinoma of the stomach. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar; Falkmer, Sture Emil. (1999) The origin of gut and pancreatic neuroendocrine (APUD) cells - the last word?. Journal of Pathology
    Kronikk
  • Waldum, Helge. (1999) Hypergastrinaemia with long-term omeprazole treatment. Alimentary Pharmacology and Therapeutics
    Kronikk
  • Waldum, Helge; Rørvik, Hege; Falkmer, Sture Emil; Kawase, Shiro. (1999) Neuroendocrine (ECL Cell) Differentiation of Spontaneous Gastric Carcinomas of Cotton rats (Sigmodon hispidus). Laboratory animal science (Chicago)
    Vitenskapelig artikkel
  • Qvigstad, G; Falkmer, Sture Emil; Westre, Bjørn; Waldum, Helge. (1999) Clinical and histopathological tumour progression in ECL cell carcinoids ("ECLomas"). APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Loenneche, Jan P.; Beisvåg, Vidar; Arbo, Ingerid; Waldum, Helge; Sandvik, AK; Knardahl, Stein. (1999) Chronic carbon monoxide exposure in vivo induces myocardial endothelin-1 expression and hypertrophy in rat. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Syversen, Unni; Norsletten, L.; Falch, J.A.; Madsen, J.E.; Nilsen, Odd Georg; Waldum, Helge. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Falkmer, Sture Emil; Westre, B; Waldum, Helge. (1999) Clinical and histopathological tumour progression in ECL cell carcinoids (ECLomas). APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Loennechen, Jan P.; Beisvag, Vidar; Arbo, Ingerid; Waldum, Helge L.; Sandvik, Arne K.; Knardahl, Stein. (1999) Chronic monoxide exposure in vivo induces myocardial endothelin-1 expression and hyperthrophy in rat. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of Lifelong Nicotine Inhalation on Bone Mass and Mechanical Properties in Female Rat Femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Qvigstad, G; Bjørgaas, Marit; Eide, Inger; Sandvik, AK; Waldum, Helge. (1999) Vagal stimulation augments maximal (penta) gastrin-stimulated acid secretion in humans. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Rørvik, Hege; Falkmer, Sture Emil; Kawase, Shiro. (1999) Neuroendocrine (ECL cell) differentiation of spontaneous gastric carcinomas of cotton rats (Sigmodon hispidus). Laboratory animal science (Chicago)
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar; Falkmer, S. (1999) Re. Editorial entitled "The origin of gut and pancreatic neuroendocrine (APUD) cells-the last word?". Journal of Pathology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Risikoen ved uttalt syrehemming. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Qvigstad, G; Bjørgaas, Marit; Eide, Inger; Sandvik, AK; Waldum, Helge. (1999) Vagal stimulation augments maximal (penta)gastrin stimulated acid secretion in man. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar. (1999) The origin of gut and pancreatic neuroendocrine cells - the last word?. Journal of Pathology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Relationship of ECL cells and gastric neoplasia. The Yale Journal of Biology and Medicine
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, Arne Kristian; Angelsen, Anders; Krokan, Hans Einar; Falkmer, Sture Emil. (1999) Letter to the Editor: Re. Editorial entitled "The origin of gut and pancreatic neuroendocrine (APUD) cells - the last word?". Journal of Pathology
    Vitenskapelig artikkel
  • Angelsen, Anders; Falkmer, Sture Emil; Sandvik, AK; Waldum, Helge. (1999) Pre- and postnatal testosterone administration induces proliferative epithelial lesions with neuroendocrine differentiation in the dorsal lobe of the rat prostate. The Prostate
    Vitenskapelig artikkel
  • Angelsen, Anders; Falkmer, Sture Emil; Sandvik, Arne Kristian; Waldum, Helge. (1999) Pre- and Postnatal Testosterone Administration Induces Proliferative Epithelial Lesions With Neuroendocrine Differentiation in the Dorsal Lobe of the Rat Prostate. The Prostate
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanicaql properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Solhaug, Jan Helge; Pedersen, Hermod; Waldum, Helge L.; Ødegaard, Svein; Horn, Arild. (1999) Symposium: Forskning og forskningsmetodikk for klinikeren. Genteknikk. Glaxo Wellcome-støttet Faggruppe i Gastroenterologi
    Fagbok
  • Syversen, Unni; Waldum, HL. (1999) Alendronate does not affect gastric secretion in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel

1998

  • Waldum, Helge. (1998) Behandling av antibiotikaindusert diare med homolog fæces. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (1998) Fortrinnsrett til underordnede legestillinger ved sykehus. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (1998) Svensk doktorgrad meritterer ikke i Norge. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Sandvik, AK. (1998) The relevance of luminal release is doubtful. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Idle, Jeffrey R. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Idle, JR. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Kronikk
  • Kleveland, Per M; Waldum, Helge. (1998) Intragastric pH and Helicobacter pylori treatment with proton pump inhibitors combined with amoxicillin. Scandinavian Journal of Gastroenterology
    Kronikk
  • Waldum, Helge. (1998) Kontingenten til Den norske lægeforening er økt med 32 prosent i løpet av fire år. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Nordbø, Svein A.; Bevanger, Lars Solbu. (1998) A bismuth salt inhibits Herpes Simplex Virus. Microbial Ecology in Health and Disease
    Vitenskapelig artikkel
  • Hammer, Tommy A.; Waldum, Helge. (1998) Peroksisomer og peroksisomproliferatorer. Interessante miljøgifter og terapeutika med effekt på fettstoffskifte og hormonfrigjøring. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, AK; Mårvik, Ronald; Dimaline, Rodney; Waldum, Helge. (1998) Carbachol stimulation of gastric acid secretion and its effect on the parietal cell. British Journal of Surgery
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1998) Hormones and carcinogenesis. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1998) Maximal gastric acid secretion in man :a concept that needs precision. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Aase, Steinar; Kvetnoi, Igor; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1998) Neuroendocrine differentiation in human gastric carcinoma. Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, E.; Sandvik, A.K; Syversen, Unni; Falkmer, Sture Emil. (1998) Hormones and carcinogenes. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Kvetnoi, Igor; Sylte, Rønnaug; Schulze, Britt; Martinsen, T.C.; Sandvik, AK. (1998) The effect of the peroxisome proliferator ciprofibrate on the gastric mucosa and particularly the gastrin cell. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK.; Idle, JR. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Vitenskapelig artikkel
  • Angelsen, Anders; Sandvik, AK; Syversen, Unni; Stridsberg, Mats; Waldum, Helge. (1998) NGF-_b, NE-cells and prostatic cancer cell lines. A study of neuroendocrine expression in the human prostatic cancer cell lines DU-145, PC-3, LNCaP, and TSU-pr1 folowing stimulation of the nerve growth factor-_b. Scandinavian Journal of Urology and Nephrology
    Vitenskapelig artikkel
  • Hammer, Tommy A.; Sandvik, AK; Waldum, Helge. (1998) Potentiating hypergastrinemic effect by the peroxisome proliferator ciprofibrate and omeprazole in the rat. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Qvigstad, G; Arnestad, Jon S.; Brenna, Eiliv; Waldum, Helge. (1998) Treatment with proton pump inhibitors induces tolerance to histamine- 2 receptor antagonists in Helicobacter pylori-negative patients. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

1997

  • Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Gastrin stimulates histamine release from the isolated pig stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Brenna, Eiliv; Kleveland, Per Martin; Waldum, Helge. (1997) En enkel metode for endoskopisk plassering av nasojejunal ernæringssonde. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Støa-Birketvedt, G.; Waldum, Helge; Vonen, B.; Florholmen, J.. (1997) Effect of cimetidine on basal and postprandial plasma concentrations of cholecystokinin and gastrin in humans. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Sandvik, AK; Brenna, Eiliv; Sundan, Anders; Holst, J.J.; Waldum, Helge. (1997) Bombesin inhibits histamine release from the rat oxyntic mucosa by a somatostatin-dependent mechanism. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Angelsen, Anders; Mecsei, Reidun; Sandvik, AK; Waldum, Helge. (1997) Neuroendocrine cells in the prostate of the rat, guinea pig, cat, and dog. The Prostate
    Vitenskapelig artikkel
  • Kleveland, Per Martin; Waldum, Helge; Brenna, Eiliv; Aase, Steinar; Mæland, Johan A.. (1997) Relationship between the effiacy of amoxicillin and intragastric pH for the treatment of Helicobacter pylori infection. Helicobacter
    Vitenskapelig artikkel
  • Kvetnoy, Igor M.; Yuzhakov, Vadim V.; Sandvik, AK; Waldum, Helge. (1997) Melatonin in mast cells and tumor radiosensitivity. Journal of Pineal Research
    Vitenskapelig artikkel
  • Kvetnoy, I.; Sandvik, AK; Waldum, Helge. (1997) The diffuse neuroendocrine system and extrapineal melatonin. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Evaluation of biologic gastrin activity of compound CI-988 in the isolated, vascularly perfused rat stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Syversen, Unni; Heide, Liv S.; Waldum, Helge. (1997) Kromogranin A i blod : en nyttig tumormarøkr. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, AK; Brenna, Eiliv; Waldum, Helge. (1997) Review article: The pharmacological inhibition of gastric acid secretion : tolerance and rebound. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Valen, Guro; Sellei, Peter; Öwall, Anders; Eriksson, Elsa; Kallner, Anders; Waldum, Helge. (1997) Release of markers of myocardial and endothelial injury following cold cardioplegic arrest in pigs. Scandinavian Cardiovascular Journal
    Vitenskapelig artikkel
  • Waldum, Helge. (1997) Budesonid (Entocort) depotkapsler i behandlingen av Crohns sykdom. Therapia medica
    Vitenskapelig artikkel
  • Arnestad, J.S.; Kleveland, Per Martin; Waldum, Helge. (1997) In single doses ranitidine effervescent is more effective than lansoprazole in decreasing gastric acidity. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Angelsen, Anders; Syversen, Unni; Stridsberg, Mats; Haugen, Olav Anton; Mjølnerød, Ove Kristian; Waldum, Helge. (1997) Use of neuroendocrine serum markers in the follow-up of patients with cancer of the prostate. The Prostate
    Vitenskapelig artikkel
  • Angelsen, Anders; Syversen, Unni; Haugen, Olav Anton; Stridsberg, Mats; Mjølnerød, Ove Kristian; Waldum, Helge. (1997) Neuroendocrine differentiation in carcinomas of the prostate : do neuroendocrine serum markers reflect immunohistochemical findings?. The Prostate
    Vitenskapelig artikkel

1996

  • Martinsen, T.C.; Nesjan, Nils; Rønning, Kirsten Sagmyr; Sandvik, AK; Waldum, Helge. (1996) The peroxisome-proliferator ciprofibrate induces hypergastrinemia without raising gastric pH. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Helge; Arnestad, J.S.; Brenna, Eiliv; Syversen, Unni; Sandvik, AK. (1996) Marked increase in gastric acid secretory capacity after omeprazole treatment. Gut
    Vitenskapelig artikkel
  • Rønning, Kirsten Sagmyr; Sandvik, AK; Waldum, Helge. (1996) The fade of gastrin-stimulated gastric acid secretion in the rat is due to depletion of releasable mucosal histamine. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Nilsen, Odd Georg; Nilsen, Turid; Rørvik, Hege; Syversen, Unni; Sandvik, AK. (1996) Long-term effects of inhaled nicotine. Life Sciences
    Vitenskapelig artikkel
  • Waldum, Helge; Syversen, Unni; Sandvik, AK. (1996) Karosinoider. Sandoz informasjon
    Vitenskapelig artikkel
  • Syversen, Unni; Opsjøn, Sissel L.; Stridsberg, Mats; Sandvik, Arne Kristian; Dimaline, Rod; Tingulstad, Solveig. (1996) Chromogranin A and pancreastatin-like immunoreactivity in normal pregnancies. Journal of Clinical Endocrinology and Metabolism (JCEM)
    Vitenskapelig artikkel
  • Waldum, Helge L.; Bakka, Arne; Horn, A.; Nordgård, K. (1996) Gastrointestinal cancer. GFG Symposium, Oslo. Gastrointestinal cancer
    Fagbok
  • Syversen, Unni; Nordsletten, L; Falch, JA; Nilsen, OG; Waldum, HL. (1996) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in femora of female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel

1988

  • Waldum, Helge; Kvetnoi, IM; Sylte, Rønnaug; Schulze, Britt; Martinsen, T.C.; Sandvik, AK. (1988) The effect of the peroxisomeproliferator ciprofibrate on the gastric mucosa and particularly the gastrin (G) cell. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1988) Hormones and carcinogenesis. Endocrine-Related Cancer
    Vitenskapelig artikkel

1986

  • Kleveland, Per Martin; Waldum, Helge; Bjerve, Kristian S; Fjøsne, Hans Erikssønn. (1986) Bioassay of gastrin using the totally isolated vascularly perfused rat stomach. A biomodel sensitive to gastrin in physiological concentrations. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

Tidsskriftspublikasjoner

  • Waldum, Helge. (2025) The need for a better classification system for gastric neoplasms. Nature Reviews Disease Primers
    Brev til redaktøren
  • Resell, Mathilde Victoria; Qvigstad, Gunnar; Wang, Timothy Cragin; Quante, Anne S.; González-Fernández, África; Gonzalez-Fernandez, Africa. (2025) Translational studies on pancreatic cancer and gastric cancer: A methodology in PhD thesis. Frontiers in Pharmacology
    Fagartikkel
  • Waldum, Helge; Modlin, Irvin. (2025) The central role of gastrin in Helicobacter pylori gastric carcinogenesis. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2024) Gastric Malignancies in United States in the Period From 2000 to 2018. Clinical Gastroenterology and Hepatology
    Brev til redaktøren
  • Waldum, Helge; Fossmark, Reidar. (2024) Eradication of Helicobacter pylori by a potassium-competitive acid blocker alone?. Scandinavian Journal of Gastroenterology
    Kronikk
  • Waldum, Helge. (2024) The Role of Gastric Juice in the Defence Against Common and Serious Diseases. Japanese Journal of Gastroenterology and Hepatology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Slupphaug, Geir. (2024) Correctly identifying the cells of origin is essential for tailoring treatment and understanding the emergence of cancer stem cells and late metastases. Frontiers in Oncology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Taper nok mer på Helseplattformen enn på "Helge Ingstad". Dagens næringsliv
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian. (2023) Uforstand å tro at biologiske funksjoner kan fjernes uten konsekvenser. Dagens medisin
    Leserinnlegg
  • Waldum, Helge; Fossmark, Reidar. (2023) Inflammation and Digestive Cancer. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Conclusion that autoimmune gastritis does not predispose to gastric cancer is unproven. Gut
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Mjønes, Patricia Gjertrud. (2023) The central role of gastrin in gastric cancer. Frontiers in Oncology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2023) Conclusion that autoimmune gastritis does not predispose to gastric cancer is unproven. Gut
    Short communication
  • Waldum, Helge. (2023) Dysfunction of von-Hippel Lindau factor causes reduced degradation of HIF leading to renal cancer. Hypoxia-inducible factor-prolyl hydroxylase enzyme inhibitors also lessen HIF destruction and could therefore increase renal cancer. Frontiers in Pharmacology
    Leserinnlegg
  • Waldum, Helge; Wiseth, Rune; Wahba, Alexander. (2022) Serotonin and valvular heart disease. Expert opinion on therapeutic targets
    Leder
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2022) Hypergastrinemia and mortality in gastric adenocarcinoma: a population-based cohort study, the HUNT study. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Wahba, Alexander. (2022) Serotonin—A Driver of Progressive Heart Valve Disease. Frontiers in Cardiovascular Medicine
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2022) Risk of gastric and oesophageal adenocarcinomas following discontinuation of long-term proton-pump inhibitor therapy. Journal of gastroenterology
    Brev til redaktøren
  • Waldum, Helge; Fossmark, Reidar. (2022) Proton pump inhibitors and mortality. Gastroenterology
    Brev til redaktøren
  • Waldum, Helge; Martinsen, Tom Christian. (2021) Chronic diseases: what about infections of virus and prions via the gut?. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Fossmark, Reidar. (2021) Gastritis, Gastric Polyps and Gastric Cancer. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2021) HYPERGASTRINEMIA IS NOT ASSOCIATED WITH INCREASED MORTALITY IN GASTRIC ADENOCARCINOMA. United European Gastroenterology Journal (UEG Journal)
    Sammendrag/abstract
  • Waldum, Helge; Mjønes, Patricia. (2021) Time to classify tumours of the stomach and the kidneys according to cell of origin. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2021) Tumor classification should be based on biology and not consensus: Re-defining tumors based on biology may accelerate progress, an experience of gastric cancer. Cancers
    Vitenskapelig oversiktsartikkel/review
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2020) Hypergastrinemia is associated with proximal and intestinal type gastric adenocarcinoma. Gastroenterology
    Sammendrag/abstract
  • Kjellman, Magnus; Knigge, Ulrich; Welin, Staffan; Thiis-Evensen, Espen; Grønbæk, H; Schalin-Jäntti, Camilla. (2020) A plasma protein biomarker strategy for detection of small intestinal neuroendocrine tumors. Neuroendocrinology
    Vitenskapelig artikkel
  • Waldum, Helge. (2020) Reflections after 10 years as Editor, including 8 years as Editor-in-Chief in Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik. (2020) Hypergastrinemia is associated with an increased risk of gastric adenocarcinoma with proximal location: A prospective population-based nested case-control study. International Journal of Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Mjønes, Patricia. (2020) Towards understanding of gastric cancer based upon physiological role of gastrin and ECL cells. Cancers
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2020) Gastrin drives gastric cancer due to oxyntic atrophy also after Helicobacter pylori eradication. Therap Adv Gastroenterol
    Leserinnlegg
  • Waldum, Helge. (2020) The increase in early-onset gastric carcinomas from 1995 is probably due to the introduction of proton pump inhibitors. Surgery
    Leserinnlegg
  • Aasarød, Kristin Matre; Waldum, Helge; Stunes, Astrid Kamilla; Sandvik, Arne Kristian; Flatberg, Arnar; Mjønes, Patricia. (2020) Gastric Corpus Mucosal Hyperplasia and Neuroendocrine Cell Hyperplasia, but not Spasmolytic Polypeptide-Expressing Metaplasia, Is Prevented by a Gastrin Receptor Antagonist in H+/K+ATPase Beta Subunit Knockout Mice. International Journal of Molecular Sciences
    Vitenskapelig artikkel
  • Waldum, Helge; Mjønes, Patricia. (2020) Correct Identification of Cell of Origin may Explain Many Aspects of Cancer: The role of Neuroendocrine Cells as Exemplified from the Stomach. International Journal of Molecular Sciences
    Vitenskapelig artikkel
  • Helgadottir, Holmfridur; Lund, Sigrun H; Gizurarson, Sveinbjörn; Waldum, Helge; Björnsson, Einar B. (2020) Pharmacokinetics of single and repeated oral doses of esomeprazole and gastrin elevation in healthy males and females. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Sørdal, Øystein Finset; Mjønes, Patricia. (2019) The enterochromaffin-like [ECL] cell-central in gastric physiology and pathology. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Fossmark, Reidar; Waldum, Helge. (2019) The phylogeny and biological function of gastric juice-microbiological consequences of removing gastric acid. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Balto, Tine Marie; Martinsen, Tom Christian; Grønbech, Jon Erik; Munkvold, Bjørn; Mjønes, Patricia. (2019) Hepatic micrometastases outside macrometastases are present in all patients with ileal neuroendocrine primary tumour at the time of liver resection. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Fossmark, Reidar. (2019) Role of Autoimmune Gastritis in Gastric Cancer. Clinical and Translational Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Rehfeld, Jens F.. (2019) Gastric cancer and gastrin: on the interaction of Helicobacter pylori gastritis and acid inhibitory induced hypergastrinemia. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge. (2019) Hypergastrinemia is the Pathogenetic Factor in Helicobacter Pylori Carcinogenesis. Clinical Consequences, Particularly for Treatment with Inhibitors of Gastric Acid Secretion. Japan Journal of Medicine
    Short communication
  • Fossmark, Reidar; Martinsen, Tom Christian; Waldum, Helge. (2019) Adverse effects of proton pump inhibitors – evidence and plausibility. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Valeur, Jørgen; Waldum, Helge. (2018) Surmaget. NGF-nytt
    Fagartikkel
  • Waldum, Helge; Fossmark, Reidar. (2018) Types of gastric carcinomas. International Journal of Molecular Sciences
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Öberg, Kjell; Sørdal, Øystein Finset; Sandvik, Arne Kristian; Gustafsson, Björn; Mjønes, Patricia. (2018) Not only stem cells, but also mature cells, particularly neuroendocrine cells, may develop into tumours: time for a paradigm shift. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Sørdal, Øystein Finset; Fossmark, Reidar. (2018) Proton pump inhibitors (PPIs) may cause gastric cancer – clinical consequences. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2018) Evidensbasert medisin- er alene et for spinkelt grunnlag for klinisk praksis. LVSinfo
    Kronikk
  • Waldum, Helge; Fossmark, Reidar. (2018) Proton pump inhibitors and gastric cancer: a long expected side effect finally reported also in man. Gut
    Short communication
  • Waldum, Helge. (2018) Editorial: proton pump inhibitors (PPIs) and primary liver cancer. Alimentary Pharmacology and Therapeutics
    Leder
  • Mjønes, Patricia; Nordrum, Ivar Skjåk; Qvigstad, Gunnar; Sørdal, Øystein Finset; Rian, Liselotte Linnea Mårtensson; Waldum, Helge. (2017) Expression of erythropoietin and neuroendocrine markers in clear cell renal cell carcinoma. APMIS : Acta pathologica, microbiologica et immunologica Scandinavica. Supplementum
    Vitenskapelig artikkel
  • Vange, Pål; Bruland, Torunn; Doseth, Berit; Fossmark, Reidar; Sousa, Mirta; Beisvag, Vidar. (2017) The cytoprotective protein clusterin is overexpressed in hypergastrinemic rodent models of oxyntic preneoplasia and promotes gastric cancer cell survival. PLOS ONE
    Vitenskapelig artikkel
  • Mjønes, Patricia; Sagatun, Liv; Nordrum, Ivar Skjåk; Waldum, Helge. (2017) Neuron-Specific Enolase as an Immunohistochemical Marker Is Better Than Its Reputation. Journal of Histochemistry and Cytochemistry
    Vitenskapelig artikkel
  • Mjønes, Patricia; Nordrum, Ivar Skjåk; Sørdal, Øystein Finset; Sagatun, Liv; Fossmark, Reidar; Sandvik, Arne Kristian. (2017) Expression of the cholecystokinin-B receptor in neoplastic gastric cells. Hormones and Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Sagatun, Liv; Mjønes, Patricia. (2017) Gastrin and gastric cancer. Frontiers in Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Björnsson, Einar S.; Brenna, Eiliv. (2017) Chronic cholestatic liver diseases. Scandinavian Journal of Gastroenterology
    Brev til redaktøren
  • Waldum, Helge; Martinsen, Tom Christian. (2016) To the editor. JAMA Neurology
    Brev til redaktøren
  • Zeinali, Fatemeh; Bakkelund, Karin Elvenes; Hauso, Øyvind; Loennechen, Jan Pål; Waldum, Helge. (2016) Assessment of radiofrequency ablation technique in development of aortic valve stenosis in rabbits. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Waldum, Helge. (2016) Proton pump inhibitors and gastric cancer. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian. (2016) Proton Pump Inhibitors and Dementia Incidence. JAMA Neurology
    Leserinnlegg
  • Waldum, Helge Lyder; Kleveland, Per Martin; Sørdal, Øystein Finset. (2016) Helicobacter pylori and gastric acid: An intimate and reciprocal relationship. Therapeutic Advances in Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Sagatun, Liv; Mjønes, Patricia Gjertrud; Jianu, Constantin-Sergiu; Boyce, Malcolm; Waldum, Helge Lyder; Fossmark, Reidar. (2016) The gastrin receptor antagonist netazepide (YF476) in patients with type 1 gastric enterochromaffin-like cell neuroendocrine tumours: Review of long-term treatment. European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Boyce, Malcolm; Moore, Andrew; Sagatun, Liv; Parsons, Bryony; Varro, Andrea; Campbell, Fiona. (2016) Netazepide, a gastrin/cholecystokinin-2 receptor antagonist, can eradicate gastric neuroendocrine tumours in patients with autoimmune chronic atrophic gastritis. British Journal of Clinical Pharmacology
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind; Brenna, Eiliv; Qvigstad, Gunnar; Fossmark, Reidar. (2016) Does long-term profound inhibition of gastric acid secretion increase the risk of ECL cell-derived tumors in man?. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Sagatun, Liv; Fossmark, Reidar; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Mjønes, Patricia. (2016) Follow-up of patients with ECL cell-derived tumours. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Sørdal, Øystein Finset. (2016) Classification of epithelial malignant tumors - The differentiation between adenocarcinomas and neuroendocrine carcinomas. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Calvete, Oriol; Mjønes, Patricia; Benitez, Javier; Waldum, Helge. (2016) ECL-cell carcinoids and carcinoma in patients homozygous for an inactivating mutation in the gastric H<sup>+</sup>K<sup>+</sup>ATPase alpha subunit. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Waldum, Helge. (2015) Re: E-sigaretter – til skade eller nytte? :. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge. (2015) Re: E-sigaretter - til skade eller nytte?. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge; Hauso, Øyvind; Fossmark, Reidar. (2015) Letter: Proton pump inhibitors, hypergastrinaemia and the risk of gastric neoplasia. Alimentary Pharmacology and Therapeutics
    Brev til redaktøren
  • Grong, Eivind; Græslie, Hallvard; Munkvold, Bjørn; Arbo, Ingerid Brænne; Kulseng, Bård Eirik; Waldum, Helge. (2015) Gastrin secretion after bariatric surgery - response to a protein-rich mixed meal following roux-en-y gastric bypass and sleeve gastrectomy: a pilot study in normoglycemic women. Obesity Surgery
    Vitenskapelig artikkel
  • Hauso, Øyvind; Martinsen, Tom Christian; Waldum, Helge. (2015) 5-Aminosalicylic acid, a specific drug for ulcerative colitis. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Sagatun, Liv; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Waldum, Helge. (2015) Hypergastrinemia is associated with adenocarcinomas in the gastric corpus and shorter patient survival. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Waldum, Helge; Kleveland, Per Martin; Fossmark, Reidar. (2015) Upper gastrointestinal physiology and diseases. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Yang, Hang; Qi, Haili; Ren, Jingli; Cui, Jing; Li, Zhenfeng; Waldum, Helge. (2014) Involvement of NF-κB/IL-6 Pathway in the Processing of Colorectal Carcinogenesis in Colitis Mice. International Journal of Inflammation
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sagatun, Liv; Sandvik, Arne Kristian; Waldum, Helge. (2014) Serum gastrin in relation to localization and histological sub-classification of non-cardia adenocarcinomas in the stomach. Gastroenterology
    Sammendrag/abstract
  • Waldum, Helge; Hauso, Øyvind; Fossmark, Reidar. (2014) The regulation of gastric acid secretion - clinical perspectives. Acta Physiologica
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Ringnes, Eva; Nordbø, Helene; Sørdal, Øystein Finset; Nordrum, Ivar Skjåk; Hauso, Øyvind. (2014) The normal neuroendocrine cells of the upper gastrointestinal tract lack E-cadherin. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Zeinali, Fatemeh; Hauso, Øyvind; Wiseth, Rune; Moufack, Marcel; Waldum, Helge. (2014) Venous plasma serotonin is not a proper biomarker for pulmonary arterial hypertension. Scandinavian Cardiovascular Journal
    Vitenskapelig artikkel
  • Sagatun, Liv; Jianu, Constantin-Sergiu; Fossmark, Reidar; Mårvik, Ronald; Nordrum, Ivar Skjåk; Waldum, Helge. (2014) The gastric mucosa 25 years after proxiaml gastric vagotomy. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind; Sørdal, Øystein Finset; Fossmark, Reidar. (2014) Gastrin May Mediate the Carcinogenic Effect of Helicobacter pylori Infection of the Stomach. Digestive Diseases and Sciences
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Gustafsson, Björn; Waldum, Helge. (2014) The PAS positive material in gastric cancer cells of signet ring type is not mucin. Experimental and molecular pathology (Print)
    Vitenskapelig artikkel
  • Vigen, Alexander; Kodama, Yosuke; Viset, Trond; Fossmark, Reidar; Waldum, Helge; Kidd, Mark. (2013) Immunohistochemical evidence for an impairment of autophagy in tumorigenesis of gastric carcinoids and adenocarcinomas in rodent models and patients. Histology and Histopathology
    Vitenskapelig artikkel
  • Sørdal, Øystein; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Gustafsson, Björn; Waldum, Helge. (2013) In situ hybridization in human and rodent tissue by the use of a new and simplified method. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Zwiggelaar, Rosalie Theda Margien; Fossmark, Reidar; Kidd, Mark; Furnes, Marianne Waldum; Sandvik, Arne Kristian; Waldum, Helge. (2013) Tu1089 Somatostatin and the Slow-Growing Nature of Small Intestinal Neuroendocrine Tumors. Gastroenterology
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Granlund, Atle; Bugge, Marit; Nilsen, Nadra; Torp, Sverre Helge; Waldum, Helge. (2013) Enhanced expression of CXCL10 in inflammatory bowel disease: Potential role of mucosal toll-like 3 receptor stimulation. Inflammatory Bowel Diseases
    Vitenskapelig artikkel
  • Fossmark, Reidar; Skarsvåg, Espen Christoffer; Aarset, Harald; Hjort-Hansen, Henrik; Waldum, Helge. (2013) Symptomatic primary (Al) amyloidosis of the stomach and duodenum. Case Reports in Gastrointestinal Medicine
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, Malcolm; Bergh, Kåre; Munkvold, Bjørn. (2013) The Gastrin Receptor Antagonist Netazepide (YF476) Prevents Oxyntic Mucosal Inflammation Induced by Helicobacter Pylori Infection in Mongolian Gerbils. Helicobacter
    Vitenskapelig artikkel
  • Fossmark, Reidar; Waldum, Helge. (2013) Development of diffuse carcinomas in the gastric corpus in patients with rugal hyperplastic gastritis. International Journal of Cancer
    Leserinnlegg
  • Fossmark, Reidar; Suren, Pål; Waldum, Helge. (2013) Karakterer på medisinstudiet bør gjeninnføres. Dagens medisin
    Brev til redaktøren
  • Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Beisvag, Vidar; Waldum, Helge. (2013) Expression of Toll-like receptor-3 is enhanced in active inflammatory bowel disease and mediates the excessive release of lipocalin 2. Clinical and Experimental Immunology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Waldum, Helge. (2013) The effects of unilateral truncal vagotomy on gastric carcinogenesis in hypergastrinemic Japanese female cotton rats. Regulatory Peptides
    Vitenskapelig artikkel
  • Waldum, Helge; Hauso, Øyvind. (2013) Gastric acid inhibitors may prevent/heal oxyntic lesions by reducing blood demand. Gut
    Leserinnlegg
  • Granlund, Atle Van Beelen; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, Ignat; Gustafsson, Björn; Kidd, Mark. (2013) Whole Genome Gene Expression Meta-Analysis of Inflammatory Bowel Disease Colon Mucosa Demonstrates Lack of Major Differences between Crohn's Disease and Ulcerative Colitis. PLOS ONE
    Vitenskapelig artikkel
  • Fossmark, Reidar; Waldum, Helge. (2013) The Distressing Overuse of Gastric Acid Inhibitors. Digestive Diseases and Sciences
    Leder
  • Zeinali, Fatemeh; Fossmark, Reidar; Hauso, Øyvind; Wiseth, Rune; Hjertner, Øyvind; Waldum, Helge. (2013) Serotonin in blood: Assessment of its origin by concomitant determination of beta-thromboglobulin (platelets) and chromogranin A (enterochromaffin cells). Scandinavian Journal of Clinical and Laboratory Investigation
    Vitenskapelig artikkel
  • Jianu, Constantin-Sergiu; Lange, Ove Juel; Viset, Trond; Qvigstad, Gunnar; Martinsen, Tom Christian; Fougner, Reidun Lyngvi. (2012) Gastric neuroendocrine carcinoma after long-term use of proton pump inhibitor. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Fossmark, Reidar; Waldum, Helge. (2012) Gastric Carcinomas Localized to the Cardia. Gastroenterology Research and Practice
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, Arne Kristian; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. (2012) Withdrawing PPI Therapy: Response to Metz et al. American Journal of Gastroenterology
    Leserinnlegg
  • Vigen, Alexander; Kodama, Yosuke; Viset, Trond; Fossmark, Reidar; Waldum, Helge; Kidd, Mark. (2012) Impaired Autophagy in Gastric Carcinoids and Adenocarcinoma of Both Rodent Models and Patients. Gastroenterology
    Sammendrag/abstract
  • Fossmark, Reidar; Stunes, Astrid Kamilla; Petzold, Christiane; Waldum, Helge; Rubert, Marina; Lian, Aina-Mari. (2012) Decreased bone mineral density and reduced bone quality in H+/K+ ATPase beta-subunit deficient mice. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Boyce, M. (2012) Treatment of gastric carcinoids type 1 with the gastrin receptor antagonist netazepide (YF476) results in regression of tumours and normalisation of serum chromogranin A. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Waldum, Helge. (2012) Long-term use of proton pump inhibitors – consequences for the gastric mucosa. Best Practice Onkologi/Hematologi
    Fagartikkel
  • Granlund, Atle; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, I; Gustafsson, Björn; Kidd, M. (2012) Dissecting the IBD Transcriptome. Inflammatory Bowel Diseases
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Nilsen, Nadra; Granlund, Atle; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge. (2012) Enhanced expression of CXCL10 in inflammatory bowel disease-role of mucosal TLR3 stimulation. Journal of Crohn’s and Coltis Supplements
    Sammendrag/abstract
  • Fossmark, Reidar; Sørdal, O.J.; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. (2012) YF476, a Gastrin Receptor Antagonist, Causes Regression of Tumors and Normalizes Serum Chromogranin A in Patients with Type 1 Gastric Carcinoids. Neuroendocrinology
    Sammendrag/abstract
  • Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge; Espevik, Terje. (2012) Induction of Lipocalin-2 in Colonic Epithelial Cells in Inflammatory Bowel Disease. Inflammatory Bowel Diseases
    Sammendrag/abstract
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Viset, Trond; Qvigstad, Gunnar; Sørdal, Øystein Finset; Mårvik, Ronald. (2012) Gastric carcinoids after long-term use of a proton pump inhibitor. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Riis, Åse Garløv; Martinsen, Tom Christian; Waldum, Helge; Fossmark, Reidar. (2012) Clinical experience with infliximab and adalimumab in a single-center cohort of patients with Crohn's disease. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, M; Bergh, Kåre; Qvigstad, Gunnar. (2012) The gastrin receptor antagonist YF476 prevents oxyntic mucosal inflammation due to Helicobacter pylori infection in Mongolian gerbils. Regulatory Peptides
    Sammendrag/abstract
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Syversen, Unni; Hauso, Øyvind; Fykse, Vidar; Waldum, Helge. (2011) Five-year follow-up of patients treated for 1 year with octreotide long-acting release for enterochromaffin-like cell carcinoids. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Qvigstad, Gunnar; Martinsen, Tom Christian; Hauso, Øyvind; Waldum, Helge. (2011) Animal models to study the role of long-term hypergastrinemia in gastric carcinogenesis. Journal of Biomedicine and Biotechnology
    Vitenskapelig oversiktsartikkel/review
  • Stunes, Astrid Kamilla; Reseland, Janne Elin; Hauso, Øyvind; Kidd, Mark; Tømmerås, Karin; Waldum, Helge. (2011) Adipocytes express a functional system for serotonin synthesis, reuptake and receptor activation. Diabetes, obesity and metabolism
    Vitenskapelig artikkel
  • Granlund, Atle Van Beelen; Beisvag, Vidar; Torp, Sverre Helge; Flatberg, Arnar; Kleveland, Per Martin; Østvik, Ann Elisabet. (2011) Activation of REG family proteins in colitis. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Benestad, Sylvie Lafond; Moldal, Torfinn; Waldum, Helge. (2011) Inhibitors of gastric acid secretion increase the risk of prion infection in mice. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Gustafsson, Björn; Bakke, Ingunn; Hauso, Øyvind; Kidd, Mark; Modlin, Irvin M; Fossmark, Reidar. (2011) Parietal cell activation by arborization of ECL cell cytoplasmic projections is likely the mechanism for histamine induced secretion of hydrochloric acid. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Martinsen, Tom Christian; Hauso, Øyvind; Qvigstad, Gunnar. (2010) Oral proton-pump inhibitors and step-down therapy for nonulcer dyspepsia: is this the right approach?. Therapeutic Advances in Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, Gunnar; Fossmark, Reidar; Kleveland, Per Martin; Sandvik, Arne Kristian. (2010) Rebound acid hypersecretion from a physiological, pathophysiological and clinical viewpoint. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2010) Protonpumpehemmere bør ikke selges reseptfritt. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Jianu, Constantin-Sergiu; Fossmark, Reidar; Syversen, Unni; Hauso, Øyvind; Waldum, Helge. (2010) A meal test improves the specificity of chromogranin A as a marker of neuroendocrine neoplasia. Tumour Biology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Herter, Ralph; Dybdahl, Jan H.; Waldum, Helge. (2010) Bruk av TNF-ɑ-antistoff ved inflammatorisk tarmsykdom. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Hauso, Øyvind. (2010) PPI-induced hypergastrinaemia and Barrett's mucosa: the fog thickens. Gut
    Leserinnlegg
  • Waldum, Helge L.; Hauso, Øyvind; Sandvik, AK. (2010) PPI-induced hypergastrinemia and Barrett's mucosa: the fog thickens. Gut
    Leserinnlegg
  • Martinsen, Tom Christian; Skogaker, Nan E Tostrup; Fossmark, Reidar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Bendheim, Marianne Østensen. (2010) Neuroendocrine Cells in Diffuse Gastric Carcinomas: An Ultrastructural Study With Immunogold Labeling of Chromogranin A. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Waldum, Helge; Nordrum, Ivar Skjåk; Hauso, Øyvind; Fossmark, Reidar. (2010) Long-term gastric changes in achlorhydric H+/K+-ATPase beta subunit deficient mice. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Benestad, Sylvie Lafond; Moldal, Torfinn; Waldum, Helge. (2010) Inhibitors of Gastric Acid Secretion Increase the Risk of Prion Infection in Mice. Prion
    Sammendrag/abstract
  • Waldum, Helge. (2009) This month in the Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian. (2009) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Jianu, Constantin-Sergiu; Fossmark, R; Syversen, U; Hauso, O; Waldum, H. (2009) A Meal-Test Improves the Specificity of Chromogranin A as a Marker of Neuroendocrine Neoplasia. Neuroendocrinology
    Sammendrag/abstract
  • Waldum, Helge. (2009) Proton pump inhibitors should not be sold without prescription. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Bakkelund, Karin Elvenes; Fossmark, Reidar; Nordrum, Ivar Skjåk; Waldum, Helge. (2009) Effect of antrectomy in hypergastrinaemic female Japanese cotton rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Haram, Per Magnus; Kemi, Ole Johan; Lee, SJ; Bendheim, MO; Al-Share, QY; Waldum, HL. (2009) Aerobic interval training vs. continuous moderate exercise in the metabolic syndrome of rats artificially selected for low aerobic capacity. Cardiovascular Research (CVR)
    Vitenskapelig artikkel
  • Tsolakis, Apostolos V; Grimelius, Lars; Stridsberg, Mats; Falkmer, Sture Emil; Waldum, Helge; Saras, Jan. (2009) Obestatin/ghrelin cells in normal mucosa and endocrine tumours of the stomach. European Journal of Endocrinology (EJE)
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Martinsen, TC; Fossmark, R. (2008) Controversies in the management of gastro-oesophageal diseases. Are all the gastric polyps 'bad'?. Scandinavian Journal of Gastroenterology
    Sammendrag/abstract
  • Waldum, Helge; Sandvik, Arne Kristian; Brenna, Eiliv; Fossmark, Reidar; Qvigstad, Gunnar; soga, j. (2008) Classification of tumours. Journal of Experimental and Clinical Cancer Research
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge. (2008) Editorial August issue of Scandinavian Journal of Gastroenterology. Scandinavian Journal of Gastroenterology
    Leder
  • Fossmark, Reidar; Qvigstad, Gunnar; Waldum, Helge. (2008) Gastric cancer: Animal studies on the risk of hypoacidity and hypergastrinemia. World Journal of Gastroenterology (WJG)
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian. (2008) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Qvigstad, Gunnar; Kolbjørnsen, Øyvor; Skancke, Ellen Margrete; Waldum, Helge. (2008) Gastric Neuroendocrine Carcinoma Associated with Atrophic Gastritis in the Norwegian Lundehund. Journal of Comparative Pathology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjorn; Kidd, Mark; Waldum, Helge; Drozdov, Ignat; Chan, Anthony. (2008) Neuroendocrine tumor epidemiology: contrasting Norway and North America. Cancer
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Munkvold, Bjørn; Waldum, Helge. (2008) Release of neuroendocrine products in the pulmonary circulation during intermittent hypoxia in iisoltaed rat lung. Respiratory Physiology & Neurobiology
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Munkvold, Bjørn; Waldum, Helge. (2008) Release of neuroendocrine products in the pulmonary circulation during intermittent hypoxia in isolated rat lung. Respiratory Physiology & Neurobiology
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Kusnierczyk, Waclaw; Langaas, Mette; Ylving, S; Fossmark, Reidar. (2008) Changes in gene expression of gastric mucosa during therapeutic acid inhibition. European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Jianu, CS; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2008) Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton-pump inhibition. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bye, Anja; Sørhaug, Sveinung; Ceci, Marcello; Høydal, Morten; Stølen, Tomas; Heinrich, Garrett. (2008) Carbon monoxide levels experienced by heavy smokers impair aerobic capacity and cardiac contractility and induce pathological hypertrophy. Inhalation Toxicology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjørn; Nordrum, Ivar Skjåk; Waldum, Helge. (2008) The Effect of Terguride in Carbon Tetrachloride (CCL4)-Induced Liver Fibrosis in Rat. Experimental biology and medicine
    Vitenskapelig artikkel
  • Fossmark, Reidar; Waldum, Helge. (2007) Rebound acid hypersecretion. Alimentary Pharmacology and Therapeutics
    Leserinnlegg
  • Waldum, Helge; Qvigstad, Gunnar. (2007) Proton pump inhibitors and gastric neoplasia. Gut
    Brev til redaktøren
  • Fossmark, Reidar; Brenna, E; Waldum, HL. (2007) pH 4.0. Scandinavian Journal of Gastroenterology
    Leder
  • Cui, Guanglin; Waldum, HL. (2007) Physiological and clinical significance of enterochromaffin-like cell activation in the regulation of gastric acid secretion. World Journal of Gastroenterology (WJG)
    Vitenskapelig oversiktsartikkel/review
  • Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2007) Fundic gland polyps induced by proton pump inhibition are not realted to the level of hypergastrinemia and serum chromogranin A is affected by meals. Gastroenterology
    Sammendrag/abstract
  • Hauso, Øyvind; Gustafsson, Bjørn; Loennechen, Jan Pål; Stunes, Astrid Kamilla; Nordrum, Ivar Skjåk; Waldum, Helge. (2007) Long-term serotonin effects in the rat are prevented by terguride. Regulatory Peptides
    Vitenskapelig artikkel
  • Erlandsen, Sten Even; Fykse, Vidar; Waldum, Helge; Sandvik, Arne Kristian. (2007) Octreotide induces apoptosis in the oxyntic mucosa. Molecular and Cellular Endocrinology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. (2007) Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton pump inhibition. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Haaverstad, Rune; Nordrum, Ivar Skjåk; Martinsen, Tom Christian; Waldum, Helge. (2007) Expression of neuroendocrine markers in non-small cell lung cancer. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Hauso, Øyvind; Gustafsson, Bjørn; Waldum, Helge. (2007) Long slender cytoplasmic extensions: A common feature of neuroendocrine cells?. Journal of Neuroendocrinology (JNE)
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, Gunnar. (2007) Gastric neuroendocrine carcinomas associated with atrophic gastritis in the Norwegian lundehund (puffin dog). Carcinogenesis
    Vitenskapelig artikkel
  • Nørsett, Kristin; Syversen, Unni; Waldum, Helge; Sandvik, Arne Kristian. (2007) Kromograninenes rolle i sekresjon fra neuroendokrine celler og som markør for neuroendokrin neoplasi. NBS-nytt
    Vitenskapelig artikkel
  • Bendheim, Marianne Østensen; Fossmark, Reidar; Waldum, Helge; Martinsen, Tom Christian. (2007) Morphology of g cells in hypergastrinemic cotton rats. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Westbroek, I; Waarsing, JH; van Leeuwen, JPTM; Waldum, Helge; Reseland, JE; Weinans, H. (2007) Long-term fluoxetine administration does not result in major changes in bone architecture and strength in growing rats. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Waldum, Helge. (2006) Assessment of the risk of iatrogenic hypergastrinaemia from patients with gastrinoma. Basic & Clinical Pharmacology & Toxicology
    Leserinnlegg
  • Jianu, Constantin; Qvigstad, Gunnar; Waldum, Helge. (2006) Synergistic adenocarcinoma and carcinoid. Journal of Gastrointestinal and Liver Diseases
    Brev til redaktøren
  • Fossmark, Reidar; Brenna, Eiliv; Waldum, Helge. (2006) pH 4.0. Scandinavian Journal of Gastroenterology
    Brev til redaktøren
  • Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Ellingsen, Øyvind. (2006) The effects of long-term carbon monoxide exposure on the cardiovascular system in rats. Atherosclerosis Supplements
    Sammendrag/abstract
  • Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Ellingsen, Øyvind. (2006) The effect of long-term carbon monoxide exposure on cardiovascular function in rats. European Journal of Cardiovascular Prevention & Rehabilitation
    Sammendrag/abstract
  • Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2006) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Waldum, Helge. (2006) Gastric juice - a natural-born killer. Alimentary Pharmacology and Therapeutics
    Leserinnlegg
  • Waldum, Helge. (2006) Juks i medisinsk forskning. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Brev til redaktøren
  • Sørhaug, Sveinung; Langhammer, Arnulf; Hveem, Kristian; Waldum, Helge; Steinshamn, Sigurd Loe. (2006) Increased serum levels of chromogranin A in male smokers with airway obstruction. European Respiratory Journal
    Vitenskapelig artikkel
  • Fykse, Vidar; Solligård, Erik; Bendheim, Marianne Østensen; Chen, Duan; Grønbech, Jon Erik; Sandvik, Arne Kristian. (2006) ECL cell histamine mobilization and parietal cell stimulation in the rat stomach studied by microdialysis and electron microscopy. Acta Physiologica
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Westbroek, I; Waarsing, JH; Waldum, Helge; Solligård, Erik; Brunsvik, Anders. (2006) Long-term serotonin administration leads to higher bone mineral density, affects bone architecture, and leads to higher femoral bone stiffness in rats. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Bakke, Ingunn; Tømmerås, Karin; Waldum, Helge. (2006) A new method for visualization of gut mucosal cells, describing the enterochromaffin cell in the rat gastrointestinal tract. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Linder, S; Myrvold, K; Falkmer, Ursula; Qvigstad, Gunnar; Waldum, Helge; Falkmer, Sture Emil. (2006) Neuroendocrine cells in pancreatic duct adenocarcinoma: an immunohistochemical study. Journal of Experimental and Clinical Cancer Research
    Vitenskapelig artikkel
  • Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Nilsen, Odd Georg; Waldum, Helge. (2006) Chronic inhalation of carbon monoxide: Effects on the respiratory and cardiovascular system at doses corresponding to tobacco smoking. Toxicology
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Hatlen-Rebhan, Peter; Brenna, Eiliv; Waldum, Helge. (2006) Capsule endoscopy in clinical routine in patients with suspected disease of the small intestine: a 2-year prospective study. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Bakkelund, Karin Elvenes; Fossmark, Reidar; Nordrum, Ivar Skjåk; Waldum, Helge. (2006) Signet ring cells in gastric carcinomas are derived from neuroendocrine cells. Journal of Histochemistry and Cytochemistry
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Thommesen, Liv; Tømmeras, K; Stunes, Astrid Kamilla; Tømmerås, Karin; Westbroek, Irene. (2006) Serotonin and fluoxetine modulate bone cell function in vitro. Journal of Cellular Biochemistry
    Vitenskapelig artikkel
  • Waldum, Helge. (2005) Korrupt forskning kan skade folkehelsen. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leserinnlegg
  • Waldum, Helge. (2005) Hypergastrinaemia in patients infected with Helicobacter pylori treated with proton pump inhibitors. Gut
    Leserinnlegg
  • Waldum, Helge; Martinsen, Tom Christian; Brenna, Eiliv. (2005) Nonulcer dyspepsia and proton pump inhibitors. Gastroenterology
    Leserinnlegg
  • Waldum, Helge; Fossmark, Reidar. (2005) Idiopathic gastric acid hypersecretion. European Journal of Gastroenterology and Hepathology
    Brev til redaktøren
  • Westbroek, I; Gustafsson, Bjørn; Waarsing, E; Waldum, Helge; Weinans, H; van Leeuwen, JPT. (2005) Neurotransmitter, serotonin, affects cortical bone architecture in rat femur. Bone
    Sammendrag/abstract
  • Gustafsson, Bjørn; Warsing, E; Van Leeuwen, H; Stunes, Astrid Kamilla; Thommesen, Liv; Waldum, Helge. (2005) Anti-depressants, depressing effects on bone?. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Gustafsson, Bjørn; Westbroek, I; Waarsing, E; Thommesen, Liv; Stunes, Astrid Kamilla; Waldum, Helge. (2005) Long-term serotonin administration affects cortical bone architecture and increases bone mineral density in rats. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Waldum, Helge. (2005) Nobelpris for Helicobacter pylori. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Leder
  • Waldum, Helge; Gustafsson, Bjørn; Fossmark, Reidar; Qvigstad, Gunnar. (2005) Antiulcer drugs and gastric cancer. Digestive Diseases and Sciences
    Vitenskapelig oversiktsartikkel/review
  • Martinsen, Tom Christian; Bergh, Kåre; Waldum, Helge. (2005) Gastric juice: A barrier against infectious diseases. Basic & Clinical Pharmacology & Toxicology
    Vitenskapelig oversiktsartikkel/review
  • Nørsett, Kristin; Lægreid, Astrid; Langaas, Mette; Wørlund, Sara Maria; Fossmark, Reidar; Waldum, Helge. (2005) Molecular characterization of rat gastric mucosal response to potent acid inhibition. Physiological Genomics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Johnsen, Geir; Waldum, Helge; Johannesen, Eli Marie. (2005) Rebound acid hypersecretion after long-term inhibition of gastric acid secretion. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Qvigstad, Gunnar; Bendheim, Marianne Østensen; Kopstad, G.; Kashima, K. (2005) Ultrastructure and chromogranin A immunogold labelling of ECL cell carcinoids. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Tømmerås, Karin; Nordrum, Ivar Skjåk; Loennechen, Jan Pål; Brunsvik, Anders; Solligård, Erik. (2005) Long-term serotonin administration induces heart valve disease in rats. Circulation
    Vitenskapelig artikkel
  • Fossmark, Reidar; Zhao, Chun-Mei; Martinsen, Tom Christian; Kawase, Shiro; Chen, Duan; Waldum, Helge. (2005) Dedifferentiation of enterochromaffin-like cells in gastric cancer of cotton rats. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bakke, Ingunn; Chen, Duan; Sandvik, Arne Kristian; Zahlsen, Kolbjørn; Aamo, T.. (2005) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPAR-alfa. American Journal of Physiology - Gastrointestinal and Liver Physiology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Fossmark, Reidar; Martinsen, Tom Christian; Kawase, Shiro; Chen, Duan; Waldum, Helge. (2005) Dedifferentiation of enterochromaffin-like cells in gastric cancer of hypergastrinemic cotton rats. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Fykse, Vidar; Sandvik, Arne Kristian; Waldum, Helge. (2005) A one-year follow-up study of patients with ECL cell carcinoids after treatment with octreotide LAR. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fykse, Vidar; Coy, JH; Waldum, Helge; Sandvik, Arne Kristian. (2005) The effect of the somatostatin-receptor 2 (SSTR2) on exocrine and endocrine secretion of the rat stomach. British Journal of Pharmacology
    Vitenskapelig artikkel
  • Waldum, Helge. (2005) Norsk lærebok i gastrointestinal ultralydundersøkelse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Anmeldelse
  • Petersen, H; Schumacher, KP; Waldum, HL; Berstad, A; Florholmen, Jon; Selbekk, B. (2005) Gjensidig evaluering som kvalitetssikringsmetode for sykehusenheter. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2005) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
    Vitenskapelig oversiktsartikkel/review
  • Waldum, Helge; Fossmark, R; Bakke, Ingunn; Martinsen, Tom Christian; Qvigstad, G. (2004) Hypergastrinemia in animals and man: Causes and consequences. Scandinavian Journal of Gastroenterology
    Vitenskapelig oversiktsartikkel/review
  • Qvigstad, Gunnar; Fløttum, O; Waldum, Helge. (2004) Kapselendoskopi-en ny metode for diagnostikk av sykdom i tynntarm. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bergh, Kåre; Waldum, Helge. (2004) Gastric juice: A barrier against infectious disease. Basic & Clinical Pharmacology
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Waldum, Helge. (2004) Rebound hypersecretion after inhibition of gastric acid secretion. Basic & Clinical Pharmacology
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Bakkelund, Karin Elvenes; Kawase, S; Waldum, Helge. (2004) ECL-cell derived gastric cancer in male cotton rats dosed with the H2-blocker loxtidine. Cancer Research
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Torp, Sverre Helge; Kawase, S; Sandvik, Arne Kristian; Waldum, Helge. (2004) Spontaneous enterochromaffin-like cell carcinomas in cotton rats (Sigmodon hispidus) are prevented by a somatostatin analogue. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Viste, Asgaut; Øvrebø, Kjell; Maartman-Moe, Helga; Waldum, Helge. (2004) Lanzoprazole promotes gastric carcinogenesis in rats with duodenogastric reflux. Gastric Cancer
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Midelfart, Herman; Erlandsen, Sten Even; Falkmer, Sture Emil; Grønbech, Jon Erik. (2004) Gene expression based classification of gastric carcinoma. Cancer Letters
    Vitenskapelig artikkel
  • Syversen, Unni; Ramstad, H; Gamme, K; Qvigstad, G; Falkmer, Sture Emil; Waldum, Helge. (2004) Clinical significance of elevated serum chromogranin A levels. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fykse, Vidar; Sandvik, Arne Kristian; Qvigstad, Gunnar; Falkmer, Sture Emil; Syversen, Unni; Waldum, Helge. (2004) Treatment of ECL cell carcinoids with octreotide LAR. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fossmark, R; Martinsen, Tom Christian; Bakkelund, Karin Elvenes; Kawase, S; Torp, Sverre Helge; Waldum, Helge. (2004) Hypergastrinaemia induced by partial corpectomy results in development of enterochromaffin-like cell carcinoma in male Japanese cotton rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Viste, Asgaut; Øvrebø, Kjell; Maartmann-Moe, Helga; Waldum, Helge. (2004) Lanzoprazole promotes gastric carcinogenesis in rats with duodenogastric reflux. Gastric Cancer
    Vitenskapelig artikkel
  • Brenna, Ø; Qvigstad, G.; Brenna, Eiliv; Waldum, Helge. (2004) Cytotoxicity of streptozotocin on neuroendocrine cells of the pancreas an the gut. Digestive Diseases and Sciences
    Vitenskapelig artikkel
  • Gustafsson, Bjørn; Thommesen, Liv; Waldum, Helge; Syversen, Unni. (2003) Serotonin affects bone metabolism in vitro and leads to increased bone mineral density (BMD) in female rats. Journal of Bone and Mineral Research
    Sammendrag/abstract
  • Waldum, Helge. (2003) Protonpumpehemmere og kronisk behov. Läkartidningen
    Kronikk
  • Hoff, J.M.; Waldum, Helge. (2003) Klinisk ledelse og akademisk kompetanse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (2003) Autoritært styre uten autoritet og legimitet. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Brenna, E. (2003) Discussion on the effect of chronic hypergastrinemia on human enterochromaffin-like cells: insights from patients with sporadic gastrinomas. Gastroenterology
    Kronikk
  • Waldum, Helge. (2003) Acute cholestatic hepatitis associated with celocoxib. The Annals of Pharmacotherapy
    Kronikk
  • Waldum, Helge; Qvigstad, G; Sandvik, Arne Kristian. (2003) Reg protein in gastric cancer tumour cells. FEBS Letters
    Kronikk
  • Grav, Hans J; Tronstad, Karl J.; Gudbrandsen, Oddrun A.; Berge, Kjetil; Fladmark, Kari E.; Martinsen, Tom C.. (2003) Changed energy state and increased mitochondrial beta-oxidation rate in liver of rats associated with lowered proton electrochemical potential and stimulated uncoupling protein 2 (UCP-2) expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Loenneche, Jan P.; Nilsen, Odd Georg; Arbo, Ingerid; Aadahl, Petter; Nilsen, Turid; Waldum, Helge. (2003) Chronic Exposure to Carbon Monoxide and Nicotine: Endothelin ETA Receptor Antagonism Attenuates Carbon Monoxide-Induced Myocardial Hypertrophy in Rat. Toxicology and Applied Pharmacology
    Vitenskapelig artikkel
  • Bakke, Ingunn; Yadetie, Fekadu; Sandvik, Arne Kristian; Kusnierczyk, W; Waldum, Helge; Lægreid, Astrid. (2003) DNA microarray analysis of liver gene expression in rats after longterm treatment with ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Waldum, C.; Zhao, C.M.; Waldum, Helge; Halgunset, Jostein; Chen, Duan. (2003) Cheese-induced body weight is not accompained by an increase of gastric cells producing leptin, ghrelin, gastrin, or pancreastatin in mice. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Skogaker, Nan Elisabeth Tostrup; Waldum, Helge. (2003) Antral G-cells in rats during dosing with PPARa agonist: a morphometric and immunocytohcemical study. Medical Electron Microscopy
    Vitenskapelig artikkel
  • Zhao, C-M; Wang, X.; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection results in gastric hypoacidity and hypergastrinemia in wild-type mice but vagally induced hypersecretion in gastroindeficient mice. Regulatory Peptides
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-{alpha} agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Fossmark, Reidar; Martinsen, Tom Christian; Torp, S; Waldum, Helge. (2003) Spontaneous ECL cell carcinomas in cotton rats are prevented by a somatostatin analouge. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Nørsett, Kristin; Lægreid, Astrid; Midelfart, H; Yadetie, Fekadu; Erlandsen, S.E.; Falkmer, Sture Emil. (2003) Gene expression based classification of gastric carcinoma. Cancer Letters
    Vitenskapelig artikkel
  • Grav, H.J.; Tronstad, K.J.; Gudbrandsen, O.A.; Berge, K; Fladmark, K.E.; Martinsen, Tom Christian. (2003) Changed energy state and increased mitochondrial beta-oxidation rate in liver of rats associated with lowered proton electrochemical potential and stimulated uncoupling protein 2 (UCP-2) expression. Evidence for peroxisome proliferator-activated receptor-alfa independent induction of UCP-2 expression. Evidence for peroxisome proliferator-activated receptor-alfa independt of UCP-2 expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Bakke, I; Chen, Duan; Aamo, T; Zahlsen, Kolbjørn; Waldum, Helge. (2003) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPARa receptors. Gastroenterology
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Kawase, Shiro; Håkanson, R; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G. (2003) SpontaneousECL cell carcinomas in cotton rats. Natural course and the effect of a gastrin receptor antagonist. Carcinogenesis
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, I; Kusnierczyk, W; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor alpha agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Kawase, Shiro; Håkanson, Rolf; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G. (2003) Spontaneous ECL cell carcinomas in cotton rats: natural course and prevention by a gastrin receptor antagonist. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Camilla; Zhao, Chun-Mei; Waldum, Helge; Halgunset, Jostein; Chen, Duan. (2003) Cheese-induced body weight gain is not accompanied by an increase of gastric cells producing leptin, gastrin, or pancreastatin in mice. Scandinavian Journal of Laboratory Animal Science
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Wang, X; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection results in gastric hypoacidity and hypergastrinemia in wild-type mice but vagally induced hypersecretion in gastrin-deficient mice. Regulatory Peptides
    Vitenskapelig artikkel
  • Grav, Hans J; Tronstad, Karl Johan; Gudbrandsen, Oddrun; Berge, Kjetil; Fladmark, Kari Espolin; Martinsen, Tom C. (2003) Changed Energy State and Increased Mitochondrial B-Oxidation Rate in Liver of Rats Associated with Lowered Proton Electrochemical Potential and Stimulated Uncoupling Protein 2 (UCP-2) Expression. Journal of Biological Chemistry
    Vitenskapelig artikkel
  • Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-alpha agonist ciprofibrate. Physiological Genomics
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, Arne Kristian. (2002) GRP and stimulation of acid secretion. Gut
    Kronikk
  • Waldum, Helge. (2002) Irritabel tarm - oppspinn eller gravalvor?. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Brenna, Eiliv. (2002) Gastro-oesophageal reflux disease in general practice. Last year's guidelines are probably biased. BMJ. British Medical Journal
    Kronikk
  • Bofin, Anna M.; Waldum, Camilla; Qvigstad, G; Waldum, Helge. (2002) Neuroendocrine differentiation in carcinoma of the breast. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Cui, Guanglin; Sandvik, Arne Kristian; Munkvold, Bjørn; Waldum, Helge. (2002) Glycine-extended gastrin-17 stimulates acid secretion only via CCK-2 receptor-induced histamine release in the totally isolated vascularly perfused rat stomach. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge. (2002) Legemiddelbehandling av irritabel tarmsyndrom. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Cui, Guanglin; Sandvik, Arne Kristian; Munkvold, Bjørn; Waldum, Helge. (2002) Effects of anaesthetic agents on gastrin-stimulated and histamine-stimulated gastric acid secretion in the totally isolated vascularly perfused rat stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Syversen, Unni; Bakke, Ingunn. (2002) The cellular localization of the cholecystokinin 2 (gastrin) receptor in the stomach. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Qvigstad, G; Qvigstad, Tor; Westre, Bjørn; Sandvik, Arne Kristian; Brenna, Eiliv; Waldum, Helge. (2002) Neuroendocrine differentiation in gastric adenocarcinomas associated with severe hypergastrinemia and/or pernicious anemia. APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • van Bergeijk, Jeroen D; Wilson, Paul JH; Haage Nielsen, Ole; von Tirpitz, Christian; Karvonen, Anna-Lusa; Lygren, Idar. (2002) Octreotide in patients with active ulcerative colitis treated with high dose corticosteroids (OPUS 1). European Journal of Gastroenterology and Hepathology
    Vitenskapelig artikkel
  • Bakke, Ingunn; Hammer, Tommy Arild; Sandvik, Arne Kristian; Waldum, Helge. (2002) PPAR alpha stimulates the rat gastrin-producing cell. Molecular and Cellular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge. (2002) Funksjonelle mage- og tarmlidelser. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Martinsen, Tom Christian; Taylor, David M; Johnsen, Roar; Waldum, Helge. (2002) Gastric acidity protects mice against prion infection. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Tømmerås, Karin; Bakke, Ingunn; Sandvik, Arne Kristian; Larsson, Erik; Waldum, Helge. (2002) Rat parietal cell express CCK-2 receptor mRNA: gene expression analysis of single cells isolated by laser-assisted microdissection. Biochemical and Biophysical Research Communications - BBRC
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, Arne Kristian. (2002) Long-term safety of proton pump inhibitors: risks of gastric neoplasia and infections. Expert Opinion on Drug Safety
    Vitenskapelig artikkel
  • Waldum, Helge; Martinsen, Tom Christian. (2002) Magesyre beskytter mot kugalskap. Gemini
    Populærvitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Letter to the editor. Virchows Archiv
    Kronikk
  • Martinsen, T.C.; Waldum, Helge. (2001) Menneskegalskap eller kugalskap?. Under dusken : studentavisa i Trondheim
    Kronikk
  • Waldum, Helge. (2001) Serum chromogranin A in the control of patients on long-term treatment with inhibitors of acid secretion. European Journal of Clinical Investigation
    Kronikk
  • Waldum, Helge. (2001) Medisinstudiet gir for liten biologisk kompetanse. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Chen, Duan; Zhao, Chun-Mei; Falkmer, Sture Emil; Waldum, Helge; Syder, Andrew; Gordon, Jeffrey. (2001) Ablation of Parietal Cells Is Associated with ECL-cell Hyperplasia in Transgenic Mice with a Genetically Engineered Ablation of Their Parietal Cell Lineage. Gastroenterology
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  • Kleveland, Ola; Syversen, Unni; Slørdahl, Kari; Waldum, Helge. (2001) Enterochromaffin-like (ECL) cell hyperplasia/neoplasia as a source of chromogranin A (CgA) increase in blood. Digestion
    Vitenskapelig artikkel
  • Cui, Guanglin; Syversen, Unni; Zhao, Chun-Mei; Chen, Duan; Waldum, Helge. (2001) Long-term omeprazole treatment suppress body weight gain and bone mineralization in young male rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Bakke, Ingunn; Torp, Sverre Helge; Qvigstad, G; Brenna, Eiliv; Sandvik, Arne Kristian. (2001) Effects of the peroxisome proliferator ciprofibrate and the somatostatin analogue octreotide alone or in combination on the rat liver. Recent Advances and Research Updates
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat by inducing histamine release. American Journal of Physiology
    Vitenskapelig artikkel
  • Cui, G.-L.; Syversen, Unni; Chao, Chun-Mei; Chen, Duan; Waldum, Helge. (2001) Long-term Omeprazole treatment Suppresses Body Weight Gain and Bone Mineralization in Young Male Rats. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Bakke, Ingunn; Skogaker, Nan Elisabeth Tostrup; Waldum, Helge; Håkanson, Rolf; Chen, Duan. (2001) Functionally impaired, hypertrophic ECL cells accumulate vacuoles and lipofuscin bodies. An ultrastructural study of ECL cells isolated from hypergastrinemic rats. Cell and Tissue Research
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Indications for a neuroendocrine tumor-carcinoma sequence. Virchows Archiv
    Vitenskapelig artikkel
  • Bakke, Ingunn; Qvigstad, G; Sandvik, Arne Kristian; Waldum, Helge. (2001) The CCK-2 receptor is located on the ECL cell, but not on the parietal cell. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Zhao, Chun-Mei; Bakke, Ingunn; Tostrup-Skogaker, Nan; Waldum, Helge; Håkanson, Rolf; Chen, Duan. (2001) Functionally impaired, hypertrophic ECL cells accumulate vacuoles and lipofuscin bodies. An ultrastructural study of ECL cells isolated from hypergastrinemic rats. Cell and Tissue Research
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  • Bakke, Ingunn; Qvigstad, G; Waldum, Helge. (2001) Biologically active CCK-2 receptors are located on the ECL cell, but not on the parietal cell. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Fresvig, Anne; Qvigstad, Gunnar; Halvorsen, Tore Bøhmer; Falkmer, Sture Emil; Waldum, Helge. (2001) Neuroendocrine differentiation in bronchial carcinomas of classical squamous cell-type. An immunohistochemical study of 29 cases, applying the tyramid signal amplification technique. Applied immunohistochemistry & molecular morphology (Print)
    Vitenskapelig artikkel
  • Waldum, Helge. (2001) The safety of proton pump inibitors. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Waldum, Helge; Qvigstad, G; Falkmer, Sture Emil. (2001) Letter to the Editor. Virchows Archiv
    Vitenskapelig artikkel
  • Waldum, Helge; Syversen, Unni. (2001) Serum chromogranin A in the control of patients on long-term treatment with inhibitors of acid secretion. European Journal of Clinical Investigation
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv. (2001) Reply: on gastric polyps, proton pump inhibitors and long-term risks. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Munkvold, Bjørn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat, but also in man. Gastroenterology
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  • Sandvik, Arne Kristian; Cui, Guanglin; Bakke, Ingunn; Munkvold, Bjørn; Waldum, Helge. (2001) PACAP stimulates gastric acid secretion in the rat by histamine release and a direct effect on the parietal cell. Gastroenterology
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  • Syversen, Unni; Bakke, I; Slørdahl, KW; Waldum, HL. (2001) The PPAR-alpha agonist Wyeth 14643 increases bone mineral density in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel
  • Waldum, Helge; Martinsen, T.C.; Brenna, Eiliv. (2000) Safety of proton pump inhibitors. Alimentary Pharmacology and Therapeutics
    Kronikk
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (2000) The mechanism of histamine secretion from gastric enterochromaffin-like cells. American Journal of Physiology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Brenna, Eiliv. (2000) The mechanism of histamine secretion from gastric enterochromaffin-like cells. American Journal of Physiology
    Kronikk
  • Bakke, Ingunn; Sandvik, AK; Waldum, Helge. (2000) Octreotide inhibits the enterochromaffin-like cell, but not peroxisome proliferator-induced hypergastrinemia. Journal of Molecular Endocrinology
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  • Waldum, Helge; Brenna, Eiliv. (2000) Rewiev article: is profound inhibition safe. Alimentary Pharmacology and Therapeutics
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  • Qvigstad, G; Falkmer, Sture Emil; Waldum, Helge. (2000) Immunhistokjemisk diagnostikk ved bruk av tyramid signalamplifikasjon. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Brenna, Eiliv; Flaaten, Borgar; Waldum, Helge; Myrvold, Helge Elliot. (2000) Behandling av oesophagusvaricer med strikkligatur. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Bakke, Ingunn; Qvigstad, G; Brenna, Eiliv; Sandvik, AK; Waldum, Helge. (2000) Gastrin has a specific proliferative effect on the rat enterochromaffin-like cell, but not on the parietal cell: a study by elutriation centrifugation. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Cui, Guanglin; Falkmer, Sture Emil; Sandvik, AK; Kawase, Shiro; Waldum, Helge. (2000) Spontaneous ECL omas in cotton rats (Sigmodon hispidus): tumours occurring in hypoacidic/hypergastrinemic animals with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Helge; Mårvik, Ronald; Grønbech, Jon Erik; Sandvik, AK; Aase, Steinar. (2000) Oxyntic lesions may be provoked in the rat both by the process of acid secretion and also by gastric acidity. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Guanglin, Cui; Qvigstad, G; Falkmer, Sture Emil; Sandvik, AK; Kawase, Shiro; Waldum, Helge. (2000) Spontaneous ECLomas in cotton rats (Sigmodon hispidus): tumours occurring in hypoacidic/hypergastrinaemic animals with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Qvigstad, G; Sandvik, AK; Brenna, Eiliv; Falkmer, Sture Emil; Waldum, Helge. (2000) Detection of chromogranin A in human gastric adenocarcinomas using a sensitive immunohistochemical technique. The Histochemical Journal
    Vitenskapelig artikkel
  • Qvigstad, G; Qvigstad, Tor; Westre, Bjørn; Sandvik, AK; Brenna, Eiliv; Waldum, Helge. (2000) Neuroendocrine differentiation in gastric adenocarcinomas associated with severe hypergastrinemia. Cancer Detection and Prevention
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Falkmer, Sture Emil; Waldum, Helge. (2000) Immunhistokjemisk diagnostikk ved bruk av tyramid-signalamplifikasjon. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Cui, G; Qvigstad, Gunnar; Falkmer, Sture Emil; Sandvik, Arne Kristian; Kawase, S; Waldum, Helge. (2000) Spontaneous ECLomas in cotton rats (Sigmodon hispidus): Tumours occurring in hypoacidic/hypergastrinaemic animal's with normal parietal cells. Carcinogenesis
    Vitenskapelig artikkel
  • Syversen, Unni; Waldum, HL; Slørdahl, K; Chen, D. (2000) Synergistic effects of the pesticides toxaphene and dieldrin on bone mineral density in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel
  • Waldum, Helge; Syversen, Unni. (1999) Comments on "Prospective study of the value of serum chromogranin A or serum gastrin levels in the assessment of the presence, extent or growth of gastrinomas". Cancer
    Kronikk
  • Waldum, Helge; Qvigstad, G; Sandvik, AK. (1999) Letter to the editor. Authors' reply. Journal of Pathology
    Kronikk
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Risiko ved medikamentell syrehemming. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Jørgensen, Georg; Waldum, Helge. (1999) Lack f effect of transdermal nicotine on 3 cases of primary sclerosing cholangitis. Digestive Diseases and Sciences
    Kronikk
  • Waldum, Helge. (1999) ECL cell tumor and endocrine carcinoma of the stomach. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar; Falkmer, Sture Emil. (1999) The origin of gut and pancreatic neuroendocrine (APUD) cells - the last word?. Journal of Pathology
    Kronikk
  • Waldum, Helge. (1999) Hypergastrinaemia with long-term omeprazole treatment. Alimentary Pharmacology and Therapeutics
    Kronikk
  • Waldum, Helge; Rørvik, Hege; Falkmer, Sture Emil; Kawase, Shiro. (1999) Neuroendocrine (ECL Cell) Differentiation of Spontaneous Gastric Carcinomas of Cotton rats (Sigmodon hispidus). Laboratory animal science (Chicago)
    Vitenskapelig artikkel
  • Qvigstad, G; Falkmer, Sture Emil; Westre, Bjørn; Waldum, Helge. (1999) Clinical and histopathological tumour progression in ECL cell carcinoids ("ECLomas"). APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Loenneche, Jan P.; Beisvåg, Vidar; Arbo, Ingerid; Waldum, Helge; Sandvik, AK; Knardahl, Stein. (1999) Chronic carbon monoxide exposure in vivo induces myocardial endothelin-1 expression and hypertrophy in rat. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Syversen, Unni; Norsletten, L.; Falch, J.A.; Madsen, J.E.; Nilsen, Odd Georg; Waldum, Helge. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Qvigstad, Gunnar; Falkmer, Sture Emil; Westre, B; Waldum, Helge. (1999) Clinical and histopathological tumour progression in ECL cell carcinoids (ECLomas). APMIS - Journal of Pathologiy, Microbiology and Immunology
    Vitenskapelig artikkel
  • Loennechen, Jan P.; Beisvag, Vidar; Arbo, Ingerid; Waldum, Helge L.; Sandvik, Arne K.; Knardahl, Stein. (1999) Chronic monoxide exposure in vivo induces myocardial endothelin-1 expression and hyperthrophy in rat. Pharmacology and Toxicology
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of Lifelong Nicotine Inhalation on Bone Mass and Mechanical Properties in Female Rat Femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Qvigstad, G; Bjørgaas, Marit; Eide, Inger; Sandvik, AK; Waldum, Helge. (1999) Vagal stimulation augments maximal (penta) gastrin-stimulated acid secretion in humans. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Rørvik, Hege; Falkmer, Sture Emil; Kawase, Shiro. (1999) Neuroendocrine (ECL cell) differentiation of spontaneous gastric carcinomas of cotton rats (Sigmodon hispidus). Laboratory animal science (Chicago)
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar; Falkmer, S. (1999) Re. Editorial entitled "The origin of gut and pancreatic neuroendocrine (APUD) cells-the last word?". Journal of Pathology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Risikoen ved uttalt syrehemming. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Qvigstad, G; Bjørgaas, Marit; Eide, Inger; Sandvik, AK; Waldum, Helge. (1999) Vagal stimulation augments maximal (penta)gastrin stimulated acid secretion in man. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar. (1999) The origin of gut and pancreatic neuroendocrine cells - the last word?. Journal of Pathology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Relationship of ECL cells and gastric neoplasia. The Yale Journal of Biology and Medicine
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, Arne Kristian; Angelsen, Anders; Krokan, Hans Einar; Falkmer, Sture Emil. (1999) Letter to the Editor: Re. Editorial entitled "The origin of gut and pancreatic neuroendocrine (APUD) cells - the last word?". Journal of Pathology
    Vitenskapelig artikkel
  • Angelsen, Anders; Falkmer, Sture Emil; Sandvik, AK; Waldum, Helge. (1999) Pre- and postnatal testosterone administration induces proliferative epithelial lesions with neuroendocrine differentiation in the dorsal lobe of the rat prostate. The Prostate
    Vitenskapelig artikkel
  • Angelsen, Anders; Falkmer, Sture Emil; Sandvik, Arne Kristian; Waldum, Helge. (1999) Pre- and Postnatal Testosterone Administration Induces Proliferative Epithelial Lesions With Neuroendocrine Differentiation in the Dorsal Lobe of the Rat Prostate. The Prostate
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, Lars; Falch, Jan Arvid; Madsen, Jan Erik; Nilsen, Odd Georg; Waldum, Helge L.. (1999) Effect of lifelong nicotine inhalation on bone mass and mechanicaql properties in female rat femurs. Calcified Tissue International
    Vitenskapelig artikkel
  • Syversen, Unni; Waldum, HL. (1999) Alendronate does not affect gastric secretion in female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel
  • Waldum, Helge. (1998) Behandling av antibiotikaindusert diare med homolog fæces. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (1998) Fortrinnsrett til underordnede legestillinger ved sykehus. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge. (1998) Svensk doktorgrad meritterer ikke i Norge. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Sandvik, AK. (1998) The relevance of luminal release is doubtful. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Idle, Jeffrey R. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Kronikk
  • Waldum, Helge; Sandvik, AK; Idle, JR. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Kronikk
  • Kleveland, Per M; Waldum, Helge. (1998) Intragastric pH and Helicobacter pylori treatment with proton pump inhibitors combined with amoxicillin. Scandinavian Journal of Gastroenterology
    Kronikk
  • Waldum, Helge. (1998) Kontingenten til Den norske lægeforening er økt med 32 prosent i løpet av fire år. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Kronikk
  • Waldum, Helge; Nordbø, Svein A.; Bevanger, Lars Solbu. (1998) A bismuth salt inhibits Herpes Simplex Virus. Microbial Ecology in Health and Disease
    Vitenskapelig artikkel
  • Hammer, Tommy A.; Waldum, Helge. (1998) Peroksisomer og peroksisomproliferatorer. Interessante miljøgifter og terapeutika med effekt på fettstoffskifte og hormonfrigjøring. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, AK; Mårvik, Ronald; Dimaline, Rodney; Waldum, Helge. (1998) Carbachol stimulation of gastric acid secretion and its effect on the parietal cell. British Journal of Surgery
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1998) Hormones and carcinogenesis. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1998) Maximal gastric acid secretion in man :a concept that needs precision. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Waldum, Helge; Aase, Steinar; Kvetnoi, Igor; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1998) Neuroendocrine differentiation in human gastric carcinoma. Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, E.; Sandvik, A.K; Syversen, Unni; Falkmer, Sture Emil. (1998) Hormones and carcinogenes. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Waldum, Helge; Kvetnoi, Igor; Sylte, Rønnaug; Schulze, Britt; Martinsen, T.C.; Sandvik, AK. (1998) The effect of the peroxisome proliferator ciprofibrate on the gastric mucosa and particularly the gastrin cell. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Sandvik, AK.; Idle, JR. (1998) Gastrin is the most important factor in ECL tumorigenesis. Gastroenterology
    Vitenskapelig artikkel
  • Angelsen, Anders; Sandvik, AK; Syversen, Unni; Stridsberg, Mats; Waldum, Helge. (1998) NGF-_b, NE-cells and prostatic cancer cell lines. A study of neuroendocrine expression in the human prostatic cancer cell lines DU-145, PC-3, LNCaP, and TSU-pr1 folowing stimulation of the nerve growth factor-_b. Scandinavian Journal of Urology and Nephrology
    Vitenskapelig artikkel
  • Hammer, Tommy A.; Sandvik, AK; Waldum, Helge. (1998) Potentiating hypergastrinemic effect by the peroxisome proliferator ciprofibrate and omeprazole in the rat. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Qvigstad, G; Arnestad, Jon S.; Brenna, Eiliv; Waldum, Helge. (1998) Treatment with proton pump inhibitors induces tolerance to histamine- 2 receptor antagonists in Helicobacter pylori-negative patients. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Gastrin stimulates histamine release from the isolated pig stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Brenna, Eiliv; Kleveland, Per Martin; Waldum, Helge. (1997) En enkel metode for endoskopisk plassering av nasojejunal ernæringssonde. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Støa-Birketvedt, G.; Waldum, Helge; Vonen, B.; Florholmen, J.. (1997) Effect of cimetidine on basal and postprandial plasma concentrations of cholecystokinin and gastrin in humans. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Sandvik, AK; Brenna, Eiliv; Sundan, Anders; Holst, J.J.; Waldum, Helge. (1997) Bombesin inhibits histamine release from the rat oxyntic mucosa by a somatostatin-dependent mechanism. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Angelsen, Anders; Mecsei, Reidun; Sandvik, AK; Waldum, Helge. (1997) Neuroendocrine cells in the prostate of the rat, guinea pig, cat, and dog. The Prostate
    Vitenskapelig artikkel
  • Kleveland, Per Martin; Waldum, Helge; Brenna, Eiliv; Aase, Steinar; Mæland, Johan A.. (1997) Relationship between the effiacy of amoxicillin and intragastric pH for the treatment of Helicobacter pylori infection. Helicobacter
    Vitenskapelig artikkel
  • Kvetnoy, Igor M.; Yuzhakov, Vadim V.; Sandvik, AK; Waldum, Helge. (1997) Melatonin in mast cells and tumor radiosensitivity. Journal of Pineal Research
    Vitenskapelig artikkel
  • Kvetnoy, I.; Sandvik, AK; Waldum, Helge. (1997) The diffuse neuroendocrine system and extrapineal melatonin. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Evaluation of biologic gastrin activity of compound CI-988 in the isolated, vascularly perfused rat stomach. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel
  • Syversen, Unni; Heide, Liv S.; Waldum, Helge. (1997) Kromogranin A i blod : en nyttig tumormarøkr. Tidsskrift for Den norske legeforening (Tidsskriftet)
    Vitenskapelig artikkel
  • Sandvik, AK; Brenna, Eiliv; Waldum, Helge. (1997) Review article: The pharmacological inhibition of gastric acid secretion : tolerance and rebound. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Valen, Guro; Sellei, Peter; Öwall, Anders; Eriksson, Elsa; Kallner, Anders; Waldum, Helge. (1997) Release of markers of myocardial and endothelial injury following cold cardioplegic arrest in pigs. Scandinavian Cardiovascular Journal
    Vitenskapelig artikkel
  • Waldum, Helge. (1997) Budesonid (Entocort) depotkapsler i behandlingen av Crohns sykdom. Therapia medica
    Vitenskapelig artikkel
  • Arnestad, J.S.; Kleveland, Per Martin; Waldum, Helge. (1997) In single doses ranitidine effervescent is more effective than lansoprazole in decreasing gastric acidity. Alimentary Pharmacology and Therapeutics
    Vitenskapelig artikkel
  • Angelsen, Anders; Syversen, Unni; Stridsberg, Mats; Haugen, Olav Anton; Mjølnerød, Ove Kristian; Waldum, Helge. (1997) Use of neuroendocrine serum markers in the follow-up of patients with cancer of the prostate. The Prostate
    Vitenskapelig artikkel
  • Angelsen, Anders; Syversen, Unni; Haugen, Olav Anton; Stridsberg, Mats; Mjølnerød, Ove Kristian; Waldum, Helge. (1997) Neuroendocrine differentiation in carcinomas of the prostate : do neuroendocrine serum markers reflect immunohistochemical findings?. The Prostate
    Vitenskapelig artikkel
  • Martinsen, T.C.; Nesjan, Nils; Rønning, Kirsten Sagmyr; Sandvik, AK; Waldum, Helge. (1996) The peroxisome-proliferator ciprofibrate induces hypergastrinemia without raising gastric pH. Carcinogenesis
    Vitenskapelig artikkel
  • Waldum, Helge; Arnestad, J.S.; Brenna, Eiliv; Syversen, Unni; Sandvik, AK. (1996) Marked increase in gastric acid secretory capacity after omeprazole treatment. Gut
    Vitenskapelig artikkel
  • Rønning, Kirsten Sagmyr; Sandvik, AK; Waldum, Helge. (1996) The fade of gastrin-stimulated gastric acid secretion in the rat is due to depletion of releasable mucosal histamine. Acta Physiologica Scandinavica
    Vitenskapelig artikkel
  • Waldum, Helge; Nilsen, Odd Georg; Nilsen, Turid; Rørvik, Hege; Syversen, Unni; Sandvik, AK. (1996) Long-term effects of inhaled nicotine. Life Sciences
    Vitenskapelig artikkel
  • Waldum, Helge; Syversen, Unni; Sandvik, AK. (1996) Karosinoider. Sandoz informasjon
    Vitenskapelig artikkel
  • Syversen, Unni; Opsjøn, Sissel L.; Stridsberg, Mats; Sandvik, Arne Kristian; Dimaline, Rod; Tingulstad, Solveig. (1996) Chromogranin A and pancreastatin-like immunoreactivity in normal pregnancies. Journal of Clinical Endocrinology and Metabolism (JCEM)
    Vitenskapelig artikkel
  • Syversen, Unni; Nordsletten, L; Falch, JA; Nilsen, OG; Waldum, HL. (1996) Effect of lifelong nicotine inhalation on bone mass and mechanical properties in femora of female rats. Journal of Bone and Mineral Research
    Vitenskapelig artikkel
  • Waldum, Helge; Kvetnoi, IM; Sylte, Rønnaug; Schulze, Britt; Martinsen, T.C.; Sandvik, AK. (1988) The effect of the peroxisomeproliferator ciprofibrate on the gastric mucosa and particularly the gastrin (G) cell. Journal of Molecular Endocrinology
    Vitenskapelig artikkel
  • Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1988) Hormones and carcinogenesis. Endocrine-Related Cancer
    Vitenskapelig artikkel
  • Kleveland, Per Martin; Waldum, Helge; Bjerve, Kristian S; Fjøsne, Hans Erikssønn. (1986) Bioassay of gastrin using the totally isolated vascularly perfused rat stomach. A biomodel sensitive to gastrin in physiological concentrations. Scandinavian Journal of Gastroenterology
    Vitenskapelig artikkel

Bøker

  • Waldum, Helge. (2020) The Influence of the Pharmaceutical Industry on Medicine, as Exemplified by Proton Pump Inhibitors. Cambridge Scholars Publishing Cambridge Scholars Publishing
    Vitenskapelig monografi
  • Solhaug, Jan Helge; Pedersen, Hermod; Waldum, Helge L.; Ødegaard, Svein; Horn, Arild. (1999) Symposium: Forskning og forskningsmetodikk for klinikeren. Genteknikk. Glaxo Wellcome-støttet Faggruppe i Gastroenterologi
    Fagbok
  • Waldum, Helge L.; Bakka, Arne; Horn, A.; Nordgård, K. (1996) Gastrointestinal cancer. GFG Symposium, Oslo. Gastrointestinal cancer
    Fagbok

Del av bok/rapport

  • Waldum, Helge; Mjønes, Patricia Gjertrud. (2023) Clear Cell Renal Cancer, a Tumour with Neuroendocrine Features Originating from the Erythropoietin-Producing Cell. IntechOpen
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge. (2023) Helicobacter pylori: A Bacterium Influencing and Causing Most of the Diseases in the Upper Gastrointestinal Tract. An Overview with Respect to Pathogenesis and Treatment Based on Basic Physiology. IntechOpen
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Fossmark, Reidar. (2019) Enterochromaffin-like (ECL) Cells. Elsevier
    Faglig kapittel
  • Waldum, Helge. (2019) Stomach Hormones. Elsevier
    Faglig kapittel
  • Fossmark, Reidar; Waldum, Helge. (2017) Sykdommer i ventrikkel og duodenum. Forlaget Vett & Viten AS
    Faglig kapittel
  • Waldum, Helge; Martinsen, Tom Christian. (2006) Tobacco and cancer in the digestive tract. S. Karger
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Bakke, Ingunn. (2006) Gastrin and cell proliferation.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Waldum, Helge; Fossmark, Reidar; Qvigstad, Gunnar; Bakkelund, Karin Elvenes; Kawase, S. (2005) The Japanese cotton rat develops spontaneously an ECL cell derived gastric carcinoma.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Rapport

  • Østvik, Ann Elisabet; Sandvik, Arne Kristian; Damås, Jan Kristian; Waldum, Helge. (2014) Innate Immune Responses in Colonic Mucosa During Inflammatory Bowel Disease -Effects of TLR3 Signaling. NTNU
    Doktorgradsavhandling
  • Waldum, Helge. (2000) Karsinoider i ventrikkelen. Norsk Neuroendokrin Tumor Gruppe
    Rapport

Formidling

2021

  • Poster
    Ness-Jensen, Eivind; Bringeland, Erling Audun; Mjønes, Patricia; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2021) HYPERGASTRINEMIA IS NOT ASSOCIATED WITH INCREASED MORTALITY IN GASTRIC ADENOCARCINOMA. UEG, United European Gastroenterology ueg week virtual 2021 , Virtuelt 2021-10-03 - 2021-10-05

2020

  • Vitenskapelig foredrag
    Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2020) Hypergastrinemi er assosiert med forekomst av proksimale adenokarsinom i ventrikkel. Norsk gastroenterologisk forening Årsmøte i Norsk gastroenterologisk forening , Lillehammer 2020-02-06 - 2020-02-08
  • Poster
    Aasarød, Kristin Matre; Waldum, Helge; Stunes, Astrid Kamilla; Sandvik, Arne Kristian; Flatberg, Arnar; Mjønes, Patricia. (2020) Gastric corpus mucosal hyperplasia and neuroendocrine cell hyperplasia, but not spasmolytic polypeptide-expressing metaplasia is prevented by a gastrin-blocker in H+/K+ATPase beta subunit deficient mice. American Gastroenterological Association Digestive Disease Week 2020-05-02 - 2020-05-05
  • Poster
    Ness-Jensen, Eivind; Bringeland, Erling Audun; Mattsson, Fredrik; Lagergren, Jesper; Grønbech, Jon Erik; Waldum, Helge. (2020) Hypergastrinemia is associated with proximal and intestinal type gastric adenocarcinoma. Digestive Disease Week Digestive Disease Week (DDW) 2020 , Chicago 2020-05-02 - 2020-05-05

2019

  • Poster
    Fossmark, Reidar; Balto, Tine Marie; Martinsen, Tom Christian; Grønbech, Jon Erik; Munkvold, Bjørn; Mjønes, Patricia. (2019) Hepatic neuroendocrine (NE) micrometastases outside macrometastases are found in all patients with ileal primary tumour at the time of liver resection. ENETS European Neuroendocrine Tumour Society , Barcelona 2019-03-11 - 2019-03-13

2018

  • Vitenskapelig foredrag
    Boyce, Malcolm; Moore, Andrew; Parsons, Bryony; Lloyd, Katy A.; Sagatun, Liv; Varro, Andrea. (2018) Netazepide, a gastrin/CCK2 receptor antagonist, can eradicate gastric neuroendocrine tumours in patients with autoimmune chronic atrophic gastritis. North American Neuroendocrine Tumour Society North American Neuroendocrine Tumour Society NANETS , Seattle 2018-10-04 - 2018-10-06

2016

  • Vitenskapelig foredrag
    Vange, Pål; Bruland, Torunn; Doseth, Berit; Sousa, Mirta; Sørdal, Øystein Finset; Qvigstad, Gunnar. (2016) The anti-apoptotic factor clusterin is involved in hypergastrinemia-induced remodeling of the gastric oxyntic mucosa. United European Gastroenterology Week 2016 , Wien 2016-10-17 - 2016-10-19
  • Vitenskapelig foredrag
    Beisvag, Vidar; Bakke, Ingunn; Andersen, Gøran Troseth; Zhao, Chun-Mei; Chen, Duan; Waldum, Helge. (2016) Signet ring cell carcinomas identified as a molecular subtype of gastric cancer. American Society for Gastrointestinal Endoscopy (ASGE) Digestive Disease Week 2016 , San Diego, CA 2016-05-21 - 2016-05-24

2015

  • Vitenskapelig foredrag
    Zeinali, Fatemeh; Fossmark, Reidar; Hauso, Øyvind; Waldum, Helge. (2015) Plasma serotonin in the diagnosis of mid-gut carcinoids. Norsk gastroenterologisk forening Norsk gastroenterologisk forenings årsmøte , Lillehammer 2015-02-05 - 2015-02-07

2014

  • Intervju
    Waldum, Helge. (2014) Ny studie viser at røyking gir genforandringer. [Internett] 2014-01-07
  • Intervju
    Waldum, Helge. (2014) Ny studie visar att rökning orsakar genetiska förändringar. [Internett] 2014-01-07
  • Vitenskapelig foredrag
    Fossmark, Reidar; Sagatun, Liv; Sandvik, Arne Kristian; Waldum, Helge. (2014) Serum gastrin, lokalisering og histologisk subklassifikasjon av adenocarcinomer i ventrikkelen. Norsk gastroenterologisk forening Norsk gastroenterologisk forenings årsmøte , Lillehammer 2014-01-30 - 2014-02-01
  • Intervju
    Waldum, Helge. (2014) Fant lavere kreftrisiko etter fjerning av polypper i tarmen. dagens medisin dagens medisin [Internett] 2014-08-28
  • Poster
    Fossmark, Reidar; Sagatun, Liv; Sandvik, Arne Kristian; Waldum, Helge. (2014) Serum gastrin in relation to localization and histological sub-classification of non-cardia adenocarcinomas in the stomach. American Gastroenterological Association Digestive Disease Week , Chicago 2014-05-03 - 2014-05-06

2013

  • Poster
    Zwiggelaar, Rosalie; Kidd, Mark; Gustafsson, Björn; Sandvik, Arne Kristian; Fossmark, Reidar; Furnes, Marianne Waldum. (2013) Somatostatin and the Slow-Growing Nature of Small Intestinal Neuroendocrine Tumors. DDW 2013-05-18 - 2013-05-21
  • Poster
    Fossmark, Reidar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Waldum, Helge. (2013) Unilateral truncal vagotomy reduces weight, oxyntic mucosal thickness and neuroendocrine cell density but does not prevent gastric carcinoma development in hypergastrinemic Japanese female cotton rats. Digestive Disease Week Digestive Disease Week , Orlando 2013-05-18 - 2013-05-21
  • Populærvitenskapelig foredrag
    Fossmark, Reidar; Jianu, Constantin-Sergiu; Waldum, Helge. (2013) Nevroendokrine svulster i magesekken. CarciNor CarciNors årsmøte , Sandefjord 2013-03-16 - 2013-03-17
  • Faglig foredrag
    Waldum, Helge; Sørdal, Øystein Finset; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. (2013) Does gastrin mediate the gastric carcinogenic effect of Helicobacter pylori infection?. OMNIC International Conference on Gastroenterology & Urology , Chicago 2013-06-10 - 2013-06-12
  • Vitenskapelig foredrag
    Waldum, Helge; Qvigstad, Gunnar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Sandvik, Arne Kristian; Vogt, Christina. (2013) Gastriske adenokarsinomer er i realiteten nevroendokrine (ECL celle) deriverte svulster. Avdeling for patologi og medisinsk genetikk, StOH Årsmøte i Den norske patologforening (DNP) , Trondheim 2013-03-15 - 2013-03-16
  • Vitenskapelig foredrag
    Fossmark, Reidar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Nordrum, Ivar Skjåk; Waldum, Helge. (2013) Effekten av unilateral trunkal vagotomi på ventrikkelcarcinogenese hos hypergastrinemiske bomullsrotter. Norsk Gastroenterologisk Forening Norsk Gastroenterologisk Forenings 40. årsmøte , Lillehammer 2013-02-07 - 2013-02-09

2012

  • Vitenskapelig foredrag
    Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. (2012) Treatment of Gastric Carcinoids type 1 with the Gastrin Receptor Antagonist YF476 Results in Regression of Tumours and Normalisation of Serum Chromogranin A. American Gastroenterological Association Digestive Disease Week, AGA , San Diego 2012-05-19 -
  • Vitenskapelig foredrag
    Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. (2012) Behandling av ventrikkelcarcinoider type 1 med en gastrinreceptor antagonist (YF476) gir tilbakegang av svulster og normalisering av chromogranin A. Norsk Gastroenterologisk Forening Norsk Gastroenterologisk Forenings årsmøte 2012-02-09 - 2012-02-11
  • Vitenskapelig foredrag
    Riis, Åse Garløv; Martinsen, Tom Christian; Waldum, Helge; Fossmark, Reidar. (2012) Langtidserfaringer med klinisk bruk av infliximab av adalimumab hos pasienter med Crohns sykdom på St. Olavs Hospital, Trondheim. Norsk Gastroenterologisk Forening Norsk Gastroenterologisk Forenings årsmøte , Lillehammer 2012-02-09 - 2012-02-11
  • Vitenskapelig foredrag
    Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. (2012) Treatment of Gastric Carcinoids type 1 with the Gastrin Receptor Antagonist YF476 Results in Regression of Tumours and Normalisation of Serum Chromogranin A. European Neuroendocrine Tumour Society European Neuroendocrine Tumour Society , Copenhagen 2012-03-07 - 2012-03-09
  • Poster
    Østvik, Ann Elisabet; Granlund, Atle; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge; Espevik, Terje. (2012) Induction of Lipocalin-2 in colonic epithelial cells in inflammatory bowel disease. Crohn`s and Colitis Foundation of America (CCFA) 2012 Advances in Inflammatory Bowel Disease Cohn`s and Colitis Fundation`s National Clinical & Research Conference , Miami 2012-12-14 - 2012-12-17

2010

  • Vitenskapelig foredrag
    Jianu, Constantin-Sergiu; Fossmark, Reidar; Fykse, Vidar; Hauso, Øyvind; Viset, Trond; Waldum, Helge. (2010) Five-year follow-up of patients treated for one year with octreotide long-acting release for enterochromaffin-like cell carcinoids. Norsk gastroenterologisk forening Årsmøte Norsk gastroenterologisk forenings årsmøte , Lillehammer 2010-02-11 - 2010-02-13
  • Vitenskapelig foredrag
    Hauso, Øyvind; Gustafsson, Björn; Qvigstad, Gunnar; Constantin, Jianu; Nordrum, Ivar Skjåk; Waldum, Helge. (2010) Fibroserende duodenitt: En ny sykdom?. NGF Årsmøte 2010, Norsk gastroenterologisk forening (NGF) , Lillehammer 2010-02-12 - 2010-02-13
  • Poster
    Martinsen, Tom Christian; Benestad, Sylvie Lafond; Moldal, Torfinn; Waldum, Helge. (2010) Inhibitors of gastric acid secretion increase the risk of prion infection in mice. PRION 2010 , Salzburg 2010-09-08 - 2011-09-11

2008

  • Vitenskapelig foredrag
    Stunes, Astrid Kamilla; Syversen, Unni; Waldum, Helge; Thommesen, Liv; Reseland, Janne E.; Rupert, Marina. (2008) Reduced bone mineral density and bone quality in HKATPase beta subunit knockout mice. Symposium 2008-11-20 - 2008-11-20

2007

  • Vitenskapelig foredrag
    Bye, Anja; Sørhaug, Sveinung; Ceci, Marcello; Høydal, Morten Andre; Stølen, Tomas; Heinrich, Garrett. (2007) Cardiovascular Effects of Carbon Monoxide. Inst. Sirkulasjon og Bildediagnostikk, NTNU Seminar on MR and US in small animal imaging , Medisinsk teknisk forskningssenter - det medisinske fakultet 2007-02-16 - 2007-02-17

2006

  • Vitenskapelig foredrag
    Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Høydal, Morten Andre; Tjønna, Arnt Erik; Steinshamn, Sigurd Loe. (2006) THE EFFECTS OF LONG-TERM CARBON MONOXIDE EXPOSURE ON CARDIOVASCULAR FUNCTION IN RATS. European Association for Cardiovascular Prevention and Rehab Euro Prevent 2006 , Athens, Greece 2006-05-11 - 2006-05-13
  • Vitenskapelig foredrag
    Bye, Anja; Sørhaug, Sveinung; Ceci, Marcello; Høydal, Morten Andre; Stølen, Tomas; Heinrich, Garrett. (2006) Cardiovascular effects of long-term carbon monoxide exposure in rats. Inst. Sirkulasjon og Bildediagnostikk, NTNU Exercise in Medicine , Trondheim 2006-12-14 - 2006-12-15
  • Poster
    Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Ceci, M. (2006) SMOKING AND THE HEART: The effects of long-term carbon monoxide exposure on the cardiovascular system in rats. World Congress of Cardiology , Barcelona 2006-09-02 - 2006-09-06
  • Poster
    Bye, Anja; Sørhaug, Sveinung; Stølen, Tomas; Tjønna, Arnt Erik; Høydal, Morten Andre; Steinshamn, Sigurd Loe. (2006) The effects of long-term carbon monoxide exposure on the cardiovascular system in rats. International Atherosclerosis Society (IAS) International Symposium on Atherosclerosis Rome , Rome 2006-06-18 - 2006-06-22
  • Poster
    Sørhaug, Sveinung; Steinshamn, Sigurd Loe; Haaverstad, Rune; Nordrum, Ivar Skjåk; Waldum, Helge. (2006) Neuroendocrine differentiation in non-small cell lung cancer. A biochemical, immunohistological and ultrastructural evaluation of chromogranin A. Europeiske lungekonferansen ERS. , Munchen 2006-09-01 - 2006-09-01

2005

  • Vitenskapelig foredrag
    Waldum, Helge. (2005) Gastrin and cell proliferation. Altana From Gastrin to GERD - A Century of Acid Suppression , London 2005-04-03 - 2005-04-05
  • Vitenskapelig foredrag
    Fossmark, Reidar; Qvigstad, Gunnar; Westre, Bjørn; Waldum, Helge. (2005) ECL celle carcinoid oppstått under behandling med protonpumpehemmer. Midt-Norsk Gastroenterologisk forening Midt-Norsk Gastroenterologisk forenings høstmøte , Trondheim 2005-12-02 - 2005-12-03
  • Vitenskapelig foredrag
    Fossmark, Reidar; Johnsen, Gjermund; Johannessen, Elin; Waldum, Helge. (2005) Rebound acid hypersecretion after long-term inhibition of gastric acid secretion. Norsk Gastroenterologisk Forening Årsmøte , Lillehammer 2005-02-11 -
  • Vitenskapelig foredrag
    Qvigstad, Gunnar; Waldum, Helge. (2005) Svulster i tynntarm. Midt-norsk gastroenterologisk forening Midt-norsk gastroenterologisk forenings høstmøte , Trondheim 2005-12-02 - 2005-12-03
  • Vitenskapelig foredrag
    Qvigstad, Gunnar; Waldum, Helge. (2005) Kapselendoskopi ved St. Olavs Hospital 2003-2004. Norsk Gastroenterologisk forening Norsk Gastroenterologisk forenings årsmøte , Lillehammer 2005-02-04 - 2005-02-06
  • Poster
    Gustafsson, Bjørn; Bakke, Ingunn; Tømmerås, Karin; Waldum, Helge. (2005) The Enterochromaffin Cell in the Rat Gastrointestinal Tract has a Neuron-like Appearance. American Gastro Association Digestive Disease Week , Chicago 2005-05-14 - 2005-05-19
  • Poster
    Gustafsson, Bjørn; Thommesen, Liv; Stunes, Astrid Kamilla; Waldum, Helge; Syversen, Unni. (2005) Long-term serotonin administration affects cortical bone architecture and increases bone mineral density in rats. American society for bone and mineral research ASBMR , Nashville 2005-09-23 - 2005-09-27
  • Poster
    Sørhaug, Sveinung; Langhammer, Arnulf; Hveem, Kristian; Waldum, Helge; Steinshamn, Sigurd Loe. (2005) The impact of smoking on the pulmonary neuroendocrine system assessed by serum levels of chromogranin A. European Respiratory Society European Respiratory Society Annual Congress 2005 , Copenhagen 2005-09-17 - 2005-09-21
  • Vitenskapelig foredrag
    Haram, Per Magnus; Bendheim, Marianne Østensen; Kemi, Ole Johan; Waldum, Helge; Wisløff, Ulrik. (2005) Exercise increases luminal cavolae density in close correlation with improved cardiovascular health status. Cardiac rehabilitation and exercise physiology 2005-04-06 - 2005-04-10
  • Vitenskapelig foredrag
    Tjønna, Arnt Erik; Rognmo, Øivind; Haram, Per Magnus; Stølen, Tomas; Amundsen, Brage H.; Loennechen, Jan Pål. (2005) Endurance training in patients with metabolic syndrome. Cardiac rehabilitation and exercise physiology 2005-04-06 - 2005-04-10

2003

  • Vitenskapelig foredrag
    Thommesen, Liv; Waldum, Helge L.; Syversen, Unni. (2003) Peroxisome proliferator actived receptor (PPAR) alpha agonists increase bone mineral density in female rats. 25th Annual meeting of the American Society of Bone and Mineral Research , Minneapolis, Mionnesota, USA 2003-09-19 - 2003-09-23
  • Vitenskapelig foredrag
    Waldum, Helge L.; Syversen, Unni; Thommesen, Liv. (2003) Serotonin affects bone metabolism in vitro and leads to increased bone mineral density (BMD) in female rats. 25th Annual meeting of the American Society for Bone and Mineral Research , Minneapolis, Minnesota, USA 2003-09-19 - 2003-09-23
  • Poster
    Chen, Duan; Zhao, Chun-Mei; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection may result in gastric cancer in hypergastrinemic mice but not in gastrin-deficient mice. International Conference on Applied Genomics , Amsterdam, The Netherlands 2003-10-04 -
  • Poster
    Chen, Duan; Zhao, Chun-Mei; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Does gastrin play any role in development of gastric cancer or duodenal ulcer after chronic Helicobacter pylori infection?. 11th International Conference on ulcer research , Dubrovnik, Croatia 2003-09-20 -
  • Vitenskapelig foredrag
    Martinsen, Tom Christian; Bakke, I; Chen, Duan; Aamo, T; Zahlsen, Kolbjørn; Waldum, Helge. (2003) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPARa receptors. Midt-Norsk Forskningsforum i Gastroenterologi , Meråker, Norge 2003-04-06 -
  • Vitenskapelig foredrag
    Chen, Duan; Wang, X.; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein; Wadstrøm, T. (2003) Chronic Helicobacter pylori infection may result in gastric cancer in hypergastrinemic mice but not in gastrin-deficient mice. Proceedings of International Conference on Applied Genomics - 9th ESACP/16th ISDQP Meeting (ICAG-2003) Focus on: Translational Genomics in Oncology , Nederland 2003-10-04 -
  • Vitenskapelig foredrag
    Fykse, V.; Sandvik, Arne Kristian; Falkmer, Sture Emil; Waldum, Helge. (2003) Behandling av ECL celle carcinom med octreotide LAR. Norsk Gastroenterologisk Forenings 30. årsmøte , Lillehammer 2003-02-09 -
  • Vitenskapelig foredrag
    Chen, Duan; Zhao, C.M.; Wang, X.; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein. (2003) Does gastrin play any role in development of gastric cancer or duodenal ulcer after chronic Helicobacter pylori infection?. Proceedings of 11th International conference on ulcer research , Croatia 2003-09-20 -
  • Vitenskapelig foredrag
    Thommesen, Liv; Waldum, Helge; Syversen, Unni. (2003) Peroxisome proliferator actived receptor (PPAR) alpha agonists increase bone mineral density in female rats. 25th Annual meeting of the American Society of Bone and Mineral Research , Minneapolis, Mionnesota, USA 2003-09-23 -
  • Vitenskapelig foredrag
    Nørsett, Kristin; Kuznierczyk, W.; Lægreid, Astrid; Langaas, M.; Waldum, Helge; Sandvik, Arne Kristian. (2003) Gene expression profiles in gastric mucosa during therapeutic acid inhibition. ESF, Functional Genomics and Disease. 1st Conference , Prague 2003-05-17 -
  • Vitenskapelig foredrag
    Nørsett, Kristin; Kuznierczyk, W.; Lægreid, Astrid; Langaas, M.; Yadetie, Fekadu; Kvam, S.N.. (2003) Gene expression profiles in hypergastrinemic rats and patients. Norsk Biokjemisk Selskaps Årsmøte , Norge 2003-01-23 -
  • Vitenskapelig foredrag
    Martinsen, Tom Christian; Fossmark, Reidar; Waldum, Helge. (2003) Utvikling av spontane ECL celle carcinomer hos bomullsrotter forhindres av en somatostatinanalog. Norsk Gastroenterologisk Forenings 30. årsmøte , Lillehammer 2003-02-09 -
  • Vitenskapelig foredrag
    Fossmark, Reidar; Martinsen, Tom Christian; Waldum, Helge. (2003) Hypergastrinemi indusert ved partiell corpectomi gir ECL celle carcinom hos han-bomullsrotter. Norsk Gastroenterologisk Forenings 30. årsmøte , Lillehammer 2003-02-09 -
  • Vitenskapelig foredrag
    Waldum, Helge. (2003) Hypergastrinemia in animals and man - causes and consequences. 11th International Conference on Ulcer Research , Kroatia 2003-09-20 -
  • Vitenskapelig foredrag
    Martinsen, Tom Christian; Bakke, I; Chen, Duan; Waldum, Helge. (2003) Mekanismen for fibrat-indusert hypergastrinemi. Norsk gastroenterologisk forenings 30. årsmøte , Lillehammer 2003-02-09 -
  • Vitenskapelig foredrag
    Waldum, Helge; Syversen, Unni; Thommesen, Liv. (2003) Serotonin affects bone metabolism in vitro and leads to increased bone mineral density (BMD) in female rats. 25th Annual meeting of the American Society for Bone and Mineral Research , Minneapolis, Minnesota, USA 2003-09-23 -

2002

  • Vitenskapelig foredrag
    Martinsen, Tom Christian; Kawase, Shiro; Sandvik, Arne Kristian; Torp, Sverre Helge; Qvigstad, G; Fossmark, Reidar. (2002) Spontaneous invasive ECL-omas in cotton rats are prevented by a gastrin receptor antagonist. Digestive Disease Week 2002 , San Fransisco, USA 2002-05-22 -
  • Vitenskapelig foredrag
    Chen, Duan; Zhao, Chun-Mei; Wang, X; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein. (2002) Host gastrin may determine who will get gastric cancer and who will develop duodenal ulcer after chronic Helicobacter pylori infection. Regpep 2002 , Boston, Massachusetts, USA 2002-09-03 -
  • Vitenskapelig foredrag
    Chen, Duan; Zhao, Chun-Mei; Wang, X; Friis-Hansen, L; Waldum, Helge; Halgunset, Jostein. (2002) Disparate effects of chronic Helicobacter pylori infection on parietal cells and ECL cells in wild-type vs gastrin-deficient mice. 18th UICC International Cancer Congress , Oslo, Norway 2002-07-05 -
  • Populærvitenskapelig foredrag
    Nørsett, Kristin; Lægreid, Astrid; Yadetie, Fekadu; Midelfart, H; Komorowski, Jan; Falkmer, Sture Emil. (2002) Molekylær klassifisering av magekreft. Norsk Gastroenterologisk Forenings 29. årsmøte , Lillehammer 2002-02-10 -
  • Populærvitenskapelig foredrag
    Tømmerås, Karin; Bakke, Ingunn; Sandvik, Arne Kristian; Waldum, Helge. (2002) Påvisning av CCK-2 reseptor mRNA i parietalceller fra rotte ved laser mikrodisseksjon og "nested" RT-PCR. Norsk Gastroenterologisk Forenings 29. årsmøte , Lillehammer 2002-02-10 -
  • Populærvitenskapelig foredrag
    Martinsen, Tom Christian; Kawase, Shiro; Håkanson, Rolf; Torp, Sverre Helge; Waldum, Helge. (2002) Utvikling av spontane ECL-cellesvulster i ventrikkelen hos bomullsrotter forebygges med gastrin antagonist - en modell for studier av gastrins rolle i carcinogenese. Norsk Gastroenterologisk Forenings 29. årsmøte , Lillehammer 2002-02-10 -
  • Populærvitenskapelig foredrag
    Yadetie, Fekadu; Bakke, Ingunn; Lægreid, Astrid; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge. (2002) Analysis of effects of the PPAR alpha agonist ciprofibrate on rat hepatic gene expressions using cDNA microarrays. The 7th IUBMB Conference Receptor-ligand Interactions Molecular, Physiological and Pharmacological Aspects , Bergen 2002-05-08 -

2001

  • Programdeltagelse
    Waldum, Helge. (2001) Magesyre og magekreft. NRK1 - PULS NRK1 - PULS [TV]
  • Vitenskapelig foredrag
    Viste, Asgaut; Viste, Asgaut; Øvrebø, Kjell K; Øvrebø, Kjell K; Maartmann-Moe, Helga; Maartmann-Moe, Helga. (2001) Lanzoprazole promotes gastric carcinogenesis in rats operated on with a gastrojejunostomy. 4th International Gastric Cancer Congress , New York, USA
  • Vitenskapelig foredrag
    Viste, Asgaut; Øvrebø, Kjell; Maartmann-Moe, Helga; Waldum, Helge. (2001) Lanzoprazole promotes gastric carcinogenesis in rats operated on with gastrojejunostomy. Nordisk Gastroenterologisk Forening , Reykjavik, Island 2001-01-01 -
  • Vitenskapelig foredrag
    Waldum, Helge; Martinsen, Tom Christian; Sandvik, Arne Kristian. (2001) The gastrin releasing effect of PPARalpha ligands in rats. First international symposium on PPARs: From basic science to clinical applications , Firenze, Italia 2001-04-07 -
  • Vitenskapelig foredrag
    Qvigstad, G; Waldum, Helge. (2001) ECL origin of gastric carcinomas not only in rodents, but also in man. 4th International Gastric Cancer Congress , New York, USA 2001-05-02 -
  • Vitenskapelig foredrag
    Cui, Guanglin; Syversen, Unni; Zhao, Chun-Mei; Chen, Duan; Waldum, Helge. (2001) Behandling av unge rotter med omeprazol resulterer i redusert beintetthet og redusert vektøkning. Norsk Gastroenterologisk Forenings 28. årsmøte , Lillehammer 2001-02-11 -
  • Vitenskapelig foredrag
    Qvigstad, G; Sandvik, Arne Kristian; Brenna, Eiliv; Waldum, Helge. (2001) De fleste ventrikkelcarcinomer hos personer med perniciøs anemi er maligne ECLomer. Norsk Gastroenterologisk Forenings 28. årsmøte , Lillehammer 2001-02-11 -
  • Vitenskapelig foredrag
    Flaaten, Borgar; Thürmer, Hanne; Waldum, Helge. (2001) Overser vi cancere ved colonoscopi?. Norsk Gastroenterologisk Forenings 28. årsmøte , Lillehammer 2001-02-11 -
  • Vitenskapelig foredrag
    Bakke, Ingunn; Qvigstad, G; Sandvik, Arne Kristian; Waldum, Helge. (2001) Proliferasjonsmarkører trenger ikke alltid å avspeil reell proliferasjon. Norsk Gastroenterologisk Forenings 28. årsmøte , Lillehammer 2001-02-11 -
  • Vitenskapelig foredrag
    Waldum, Helge; Qvigstad, G. (2001) ECL origin of gastric carcinomas not only in rodents, but also in man. 4th International Gastric Cancer Congress , New York, USA 2001-05-02 -
  • Vitenskapelig foredrag
    Waldum, Helge; Qvigstad, G; Sandvik, Arne Kristian. (2001) ECL cell origin of gastric carcinomas not only in rodents, but also in man. Digestive Disease Week , Atlanta, Georgia, USA 2001-05-23 -
  • Vitenskapelig foredrag
    Chen, Duan; Zhao, Chun-Mei; Falkmer, Sture Emil; Waldum, Helge. (2001) Ablation of parietal cells is associated with ECL-cell hyperplasia in transgenic mice with a genetically engineered ablation of their parietal cell lineage. Digestive Disease Week , Atlanta, Georgia, USA 2001-05-23 -
  • Vitenskapelig foredrag
    Martinsen, Tom Christian; Taylor, David M; Waldum, Helge. (2001) Gastric acidity protects mice against infection after intragastric administration of the 139A strain of scrapie agent: The potential relevance of variant Creutzfeldt Jakob Disease. Digestive Disease Week , Atlanta, Georgia, USA 2001-05-23 -
  • Vitenskapelig foredrag
    Waldum, Helge; Martinsen, Tom Christian; Bakke, Ingunn; Sandvik, Arne Kristian. (2001) The gastric releasing effect of PPAR alpha ligands in rats. PPARs: From Basic Science to Clinical Applications , Florence, Italy 2001-04-07 -
  • Vitenskapelig foredrag
    Chen, Duan; Friis-Hansen, L; Wang, X; Zhao, Chun-Mei; Waldum, Helge; Halgunset, Jostein. (2001) Different effects of chronic Helicobacter pylori infection on parietal and ECL cells between wild type and gastrin-deficient mice. Digestive Disease Week , Atlanta, Georgia, USA 2001-05-23 -

2000

  • Populærvitenskapelig foredrag
    Bakke, Ingunn; Sandvik, AK; Waldum, Helge. (2000) Peroksisomproliferatorer frigjør gastrin via en mekanisme som er uavhengig av gastrisk pH og somatostatin. Norsk Gastroenterologisk Forenings (NGF) 27. årsmøte , Lillehammer 10-13 februar
  • Populærvitenskapelig foredrag
    Bakke, Ingunn; Qvigstad, G; Sandvik, AK; Waldum, Helge. (2000) Lokalisering av gastrin/CCK-2 reseptoren til ECL celler ved vaskulær perfusjon av isolert rotteventrikkel med fluorescence-merket CCK-8. Norsk Gastroenterologisk Forenings (NGF) 27. årsmøte , Lillehammer 10 - 13 februar

1999

  • Poster
    Qvigstad, G; Falkmer, Sture Emil; Westre, Bjørn; Waldum, Helge. (1999) Clinical and histopathological tumour progression in ECL cell carcinoid ("ECLoma"). Conference on Gastrin , Tucson, Arizona, USA, 7.-10.11.
  • Poster
    Qvigstad, G; Sandvik, AK; Brenna, Eiliv; Aase, Steinar; Waldum, Helge. (1999) Reclassification of gastric adenocarcinomas to neuroendocrine carcinomas. Conference of Gastrin , Tucson, Arizona, 1999

1998

  • Vitenskapelig foredrag
    Loenneche, Jan P.; Beisvåg, Vidar; Arbo, Ingerid; Waldum, Helge; Sandvik, AK; Knardahl, Stein. (1998) Økt genuttrykk for endotelin-1 i myokard fra rotte ved CO eksponering svarende til røyking. Cardiologisk Vårmøte , Bergen
  • Vitenskapelig foredrag
    Loenneche, Jan P.; Beisvåg, Vidar; Arbo, Ingerid; Waldum, Helge; Sandvik, AK; Knardahl, Stein. (1998) Chronic carbonmonoxide exposure increases endothelin-1 expression in rat myocardium in vivo. 71st Scientific Sessions , Dallas
  • Populærvitenskapelig foredrag
    Waldum, Helge. (1998) Helicobacter pylori - cancerrisiko. GFG-symposium 8.-9. januar 1998 , Oslo, Norge
  • Populærvitenskapelig foredrag
    Waldum, Helge. (1998) Forskning - manipulerer industrien?. GFG-symposium 8.-9. januar 1998 , Oslo, Norge

1997

  • Vitenskapelig foredrag
    Waldum, Helge; Hammer, Tove Irene; Sandvik, AK; Sylte, Rønnaug. (1997) Poteniating hypergastrinemic effect by the peroxisome profilerator ciprofibrate and omeprazole. AGA Conference , Washington, D.C.
  • Vitenskapelig foredrag
    Angelsen, Anders; Falkmer, Sture Emil; Waldum, Helge. (1997) Gir høyt maternelt testosteronnivå økt incidens av cancer prostata?. Norsk kirurgisk forening. Årsmøte , Oslo
  • Vitenskapelig foredrag
    Sandvik, AK; Mårvik, Ronald; Dimaline, R.; Waldum, Helge. (1997) Differential activation of ECL- and parietal cells during carbachol-stimulated acid secretion. Bayliss & Starling Society Meeting , Liverpool
  • Vitenskapelig foredrag
    Sandvik, AK; Kvetnoy, I.M.; Martinsen, T.C.; Waldum, Helge. (1997) Ciprofibrate stimulates the G-cell by an effect independent of gastric acidity. XXXIII International Congress of Physiological Sciences , St. Petersburg

1996

  • Vitenskapelig foredrag
    Sandvik, AK; Mårvik, Ronald; Dimaline, R.; Waldum, Helge. (1996) Carbachol stimulates acid secretion mainly by a direct effect on the parietal cell. 11th International Symposium on Regulatory Peptides , København
  • Vitenskapelig foredrag
    Waldum, Helge; Martinsen, T.C.; Sandvik, AK. (1996) The peroxysomproliferator ciprofibrate induces hypergastrinemia without inhibiting gastric acid secretion. 11th Symposium on Regulatory Peptides , København

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