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English

Øystein Risa

Øystein Risa

Tilknyttet
Institutt for sirkulasjon og bildediagnostikk
Fakultet for medisin og helsevitenskap

oystein.risa@ntnu.no
73551356 92613734 AHL-senteret, 3 etasje , Øya
Om Publikasjoner Undervisning Formidling

Om

 

PhD i Biofysikk 2004, NTNU
Post Doc/Forsker fra 2004 til 2009 ved INM, DMF
Senioringeniør ved MR-Core Facility, ISB, DMF (2009 - 2016)
HTV for Tekna og leder for Akademikerne ved NTNU (2014 - 2016)
Instituttleder ved ISB (1.1.2017 - )
 

Kompetanseord

  • Biofysikk
  • Bioteknologi
  • Helseledelse
  • Ledelse
  • MR spektroskopi
  • Magnetisk resonans tomografi, MRI
  • Medisinsk forskning
  • Medisinsk teknologi
  • NMR

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2015

  • Bettum, Ingrid Johanne; Gorad, Saurabh Sayajirao; Barkovskaya, Anna; Pettersen, Solveig; Moestue, Siver Andreas; Vasiliauskaite, Kotryna; Tenstad, Ellen; Øyjord, Tove Ragnhild; Risa, Øystein; Nygaard, Vigdis; Mælandsmo, Gunhild; Prasmickaite, Lina. (2015) Metabolic reprogramming supports the invasive phenotype in malignant melanoma. Cancer Letters. volum 366 (1).
    Vitenskapelig artikkel

2011

  • Grinde, Maria Tunset; Moestue, Siver Andreas; Borgan, Eldrid; Risa, Øystein; Engebråten, Olav; Gribbestad, Ingrid S. (2011) 13C High-resolution-magic angle spinning MRS reveals differences in glucose metabolism between two breast cancer xenograft models with different gene expression patterns. NMR in Biomedicine. volum 24 (10).
    Vitenskapelig artikkel
  • Kondziella, Daniel; Melø, Torun Margareta; Risa, Øystein; Henry, P. Gilles; Sonnewald, Ursula. (2011) IN-VIVO 13C MR SPECTROSCOPY AND MR IMAGING IN RATS WITH KAOLIN-INDUCED HYDROCEPHALUS. European Journal of Neurology. volum 18.
    Sammendrag/abstract
  • Lund, Trine M.; Obel, Linea F; Risa, Øystein; Sonnewald, Ursula. (2011) beta-Hydroxybutyrate is the preferred substrate for GABA and glutamate synthesis while glucose is indispensable during depolarization in cultured GABAergic neurons. Neurochemistry International. volum 59 (2).
    Vitenskapelig artikkel
  • Melø, Torun Margareta; Håberg, Asta; Risa, Øystein; Kondziella, Daniel; Henry, PG; Sonnewald, Ursula. (2011) Tricarboxylic Acid Cycle Activity Measured by C-13 Magnetic Resonance Spectroscopy in Rats Subjected to the Kaolin Model of Obstructed Hydrocephalus. Neurochemical Research. volum 36 (10).
    Vitenskapelig artikkel

2010

  • Meisingset, Tore Wergeland; Risa, Øystein; Brenner, M; Messing, A; Sonnewald, Ursula. (2010) Alteration of Glial-Neuronal Metabolic Interactions in a Mouse Model of Alexander Disease. Glia. volum 58 (10).
    Vitenskapelig artikkel

2009

  • Brenner, Eiliv; Eyjolfsson, Elvar M.; Risa, Øystein; Sonnewald, Ursula. (2009) NMDA receptor hypofunction induced by MK-801: amino acid and monoamine homeostasis. Journal of Neurochemistry. volum 109.
    Sammendrag/abstract
  • Eyjolfsson, Elvar M.; Brenner, Eiliv; Risa, Øystein; Sonnewald, Ursula. (2009) Altered glutamatergic function in the chronic MK-801 model of schizophrenia. Journal of Neurochemistry. volum 109.
    Sammendrag/abstract
  • Kondziella, Daniel; Eyjolfsson, Elvar M.; Sæther, Oddbjørn; Sonnewald, Ursula; Risa, Øystein. (2009) GRAY MATTER METABOLISM IN ACUTE AND CHRONIC HYDROCEPHALUS. Neuroscience. volum 159 (2).
    Vitenskapelig artikkel
  • Lund, Trine M.; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S. (2009) Availability of neurotransmitter glutamate is diminished when beta-hydroxybutyrate replaces glucose in cultured. Journal of Neurochemistry. volum 110 (1).
    Vitenskapelig artikkel
  • Meisingset, Tore Wergeland; Risa, Øystein; Sonnewald, Ursula; Brenner, M; Messing, A. (2009) How are glial-neuronal interactions altered by increasing expression of GFAP?. Journal of Neurochemistry. volum 110.
    Sammendrag/abstract
  • Risa, Øystein; Melø, Torun Margareta; Sonnewald, Ursula. (2009) Quantification of amounts and C-13 content of metabolites in brain tissue using high-resolution magic angle spinning C-13 NMR spectroscopy. NMR in Biomedicine. volum 22 (3).
    Vitenskapelig artikkel
  • Shi, Qingli; Risa, Øystein; Sonnewald, Ursula; Gibson, Gary E.. (2009) Mild reduction in the activity of the alpha-ketoglutarate dehydrogenase complex elevates GABA shunt and glycolysis. Journal of Neurochemistry. volum 109.
    Vitenskapelig artikkel

2008

  • Bogen, IL; Risa, O; Risa, Øystein; Haug, KH; Sonnewald, Ursula; Fonnum, F; Walaas, SI. (2008) Distinct changes in neuronal and astrocytic amino acid neurotransmitter metabolism in mice with reduced numbers of synaptic vesicles. Journal of Neurochemistry. volum 105 (6).
    Vitenskapelig artikkel
  • Kondziella, D; Eyjolfsson, Elvar M.; Sonnewald, Ursula; Risa, Øystein. (2008) Grey matter dysfunction in acute and chronic hydrocephalus. Journal of Neurology. volum 255.
    Sammendrag/abstract

2007

  • Alvestad, Silje; Goa, Pål Erik; Qu, Hong; Risa, Øystein; Brekken, Christian; Sonnewald, Ursula; Haraldseth, Olav; Hammer, Janniche; Ottersen, Ole Petter; Håberg, Asta. (2007) In vivo mapping of temporospatial changes in manganese enhancement in rat brain during epileptogenesis. NeuroImage. volum 38.
    Vitenskapelig artikkel
  • Lund, TM; Clausen, M; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S.. (2007) beta-hydroxybutyrate and glucose metabolism is differently affected by neuronal activity. Journal of Neurochemistry. volum 102.
    Sammendrag/abstract

2006

  • Sæther, Oddbjørn; Midelfart, Anna; Risa, Øystein; Haraldseth, Olav; Krane, Jostein. (2006) Proton decoupled F-19 NMR spectroscopy of drugs used in eye treatment. Spectroscopy Letters. volum 39 (2).
    Vitenskapelig artikkel

2005

  • Hammer, Janniche; Alvestad, Silje; Qu, Hong; Risa, Øystein; Osen, Karen; Ottersen, Ole Petter; Sonnewald, Ursula. (2005) Glial-Neuronal Interactions during the latent and chorinc periods following kainate induced seizures in Rats. Journal of Neurochemistry. volum 94.
    Sammendrag/abstract
  • Risa, Øystein; Sæther, Oddbjørn; Kakar, M. K.; Mody, Jr; Løfgren, Stefan; Søderberg, P.G.; Krane, Jostein; Midelfart, Anna. (2005) Time dependency of metabolic changes in rat lens after in vivo UVB irradiation analysed by HR-MAS 1H NMR spectroscopy. Experimental Eye Research. volum 81.
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein. (2005) High-resolution MAS H-1 NMR spectroscopic analysis of rabbit cornea after treatment with dexamethasone and exposure to UV-B radiation. Current Eye Research. volum 30.
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein; Cejkova, Jitka; Midelfart, Anna. (2005) High-resolution MAS 1H NMR spectroscopic analysis of rabbit cornea after treatment with dexamethasone and exposure to UV-B radiation. Current Eye Research. volum 30 (12).
    Vitenskapelig artikkel

2004

  • Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Tessem, May-Britt; Fris, M.; Søderberg, P.G.; Cejková, Jitka. (2004) Metabolic changes in the anterior segment of the eye induced by UV irradiation and measured by NMR spectroscopy. Ophthalmic Research.
    Sammendrag/abstract
  • Risa, Øystein. (2004) Application of high-resolution NMR spectroscopy in metabolic studies of the eye. 2004.
    Doktorgradsavhandling
  • Sæther, Oddbjørn; Risa, Øystein; Cejková, Jitka; Krane, Jostein; Midelfart, Anna. (2004) High-resolution magic angle spinning 1H NMR spectroscopy of metabolic changes in rabbit lens after treatement with dexamethasone combined with UVB exposure. Graefe's Archives for Clinical and Experimental Ophthalmology. volum 242.
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Løfgren, Stefan; Søderberg, P.G.; Krane, Jostein; Midelfart, Anna. (2004) Metabolic changes in rat lens after in vivo exposure to ultraviolet irradiation: Measurements by high resolution MAS H-1 NMR spectroscopy. Investigative Ophthalmology and Visual Science. volum 45 (6).
    Vitenskapelig artikkel

2002

  • Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Löfgren, Stefan; Söderberg, Per; Krane, Jostein; Cejkova, Jitka. (2002) Application of magic angle spinning NMR spectroscopy in study of metabolic processes in the anterior segment of the eye. Acta Ophthalmologica Scandinavica. volum 80.
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Midelfart, Anna; Krane, Jostein; Cejkova, Jitka. (2002) Analysis of immediate changes of water-soluble metabolites in alkali-burned rabbit cornea, aqueous humor and lens by high-resolution 1H-NMR spectroscopy. Graefe's Archives for Clinical and Experimental Ophthalmology. volum 240.
    Vitenskapelig artikkel

2001

  • Risa, Øystein; Sæther, Oddbjørn; Midelfart, Anna; Krane, Jostein; Cejkova, Jitka. (2001) Analysis of Immediate Changes of Water Soluble Metabolites in Alkali Burned Rabbit Cornea, Aqueous Humor and Lens by High Resolution 1H NMR Spectroscopy. Graefe's Archives for Clinical and Experimental Ophthalmology. volum online publication.
    Vitenskapelig artikkel

Vitenskapelige artikler

  • Bettum, Ingrid Johanne; Gorad, Saurabh Sayajirao; Barkovskaya, Anna; Pettersen, Solveig; Moestue, Siver Andreas; Vasiliauskaite, Kotryna; Tenstad, Ellen; Øyjord, Tove Ragnhild; Risa, Øystein; Nygaard, Vigdis; Mælandsmo, Gunhild; Prasmickaite, Lina. (2015) Metabolic reprogramming supports the invasive phenotype in malignant melanoma. Cancer Letters. volum 366 (1).
    Vitenskapelig artikkel
  • Grinde, Maria Tunset; Moestue, Siver Andreas; Borgan, Eldrid; Risa, Øystein; Engebråten, Olav; Gribbestad, Ingrid S. (2011) 13C High-resolution-magic angle spinning MRS reveals differences in glucose metabolism between two breast cancer xenograft models with different gene expression patterns. NMR in Biomedicine. volum 24 (10).
    Vitenskapelig artikkel
  • Lund, Trine M.; Obel, Linea F; Risa, Øystein; Sonnewald, Ursula. (2011) beta-Hydroxybutyrate is the preferred substrate for GABA and glutamate synthesis while glucose is indispensable during depolarization in cultured GABAergic neurons. Neurochemistry International. volum 59 (2).
    Vitenskapelig artikkel
  • Melø, Torun Margareta; Håberg, Asta; Risa, Øystein; Kondziella, Daniel; Henry, PG; Sonnewald, Ursula. (2011) Tricarboxylic Acid Cycle Activity Measured by C-13 Magnetic Resonance Spectroscopy in Rats Subjected to the Kaolin Model of Obstructed Hydrocephalus. Neurochemical Research. volum 36 (10).
    Vitenskapelig artikkel
  • Meisingset, Tore Wergeland; Risa, Øystein; Brenner, M; Messing, A; Sonnewald, Ursula. (2010) Alteration of Glial-Neuronal Metabolic Interactions in a Mouse Model of Alexander Disease. Glia. volum 58 (10).
    Vitenskapelig artikkel
  • Kondziella, Daniel; Eyjolfsson, Elvar M.; Sæther, Oddbjørn; Sonnewald, Ursula; Risa, Øystein. (2009) GRAY MATTER METABOLISM IN ACUTE AND CHRONIC HYDROCEPHALUS. Neuroscience. volum 159 (2).
    Vitenskapelig artikkel
  • Lund, Trine M.; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S. (2009) Availability of neurotransmitter glutamate is diminished when beta-hydroxybutyrate replaces glucose in cultured. Journal of Neurochemistry. volum 110 (1).
    Vitenskapelig artikkel
  • Risa, Øystein; Melø, Torun Margareta; Sonnewald, Ursula. (2009) Quantification of amounts and C-13 content of metabolites in brain tissue using high-resolution magic angle spinning C-13 NMR spectroscopy. NMR in Biomedicine. volum 22 (3).
    Vitenskapelig artikkel
  • Shi, Qingli; Risa, Øystein; Sonnewald, Ursula; Gibson, Gary E.. (2009) Mild reduction in the activity of the alpha-ketoglutarate dehydrogenase complex elevates GABA shunt and glycolysis. Journal of Neurochemistry. volum 109.
    Vitenskapelig artikkel
  • Bogen, IL; Risa, O; Risa, Øystein; Haug, KH; Sonnewald, Ursula; Fonnum, F; Walaas, SI. (2008) Distinct changes in neuronal and astrocytic amino acid neurotransmitter metabolism in mice with reduced numbers of synaptic vesicles. Journal of Neurochemistry. volum 105 (6).
    Vitenskapelig artikkel
  • Alvestad, Silje; Goa, Pål Erik; Qu, Hong; Risa, Øystein; Brekken, Christian; Sonnewald, Ursula; Haraldseth, Olav; Hammer, Janniche; Ottersen, Ole Petter; Håberg, Asta. (2007) In vivo mapping of temporospatial changes in manganese enhancement in rat brain during epileptogenesis. NeuroImage. volum 38.
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Midelfart, Anna; Risa, Øystein; Haraldseth, Olav; Krane, Jostein. (2006) Proton decoupled F-19 NMR spectroscopy of drugs used in eye treatment. Spectroscopy Letters. volum 39 (2).
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Kakar, M. K.; Mody, Jr; Løfgren, Stefan; Søderberg, P.G.; Krane, Jostein; Midelfart, Anna. (2005) Time dependency of metabolic changes in rat lens after in vivo UVB irradiation analysed by HR-MAS 1H NMR spectroscopy. Experimental Eye Research. volum 81.
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein. (2005) High-resolution MAS H-1 NMR spectroscopic analysis of rabbit cornea after treatment with dexamethasone and exposure to UV-B radiation. Current Eye Research. volum 30.
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein; Cejkova, Jitka; Midelfart, Anna. (2005) High-resolution MAS 1H NMR spectroscopic analysis of rabbit cornea after treatment with dexamethasone and exposure to UV-B radiation. Current Eye Research. volum 30 (12).
    Vitenskapelig artikkel
  • Sæther, Oddbjørn; Risa, Øystein; Cejková, Jitka; Krane, Jostein; Midelfart, Anna. (2004) High-resolution magic angle spinning 1H NMR spectroscopy of metabolic changes in rabbit lens after treatement with dexamethasone combined with UVB exposure. Graefe's Archives for Clinical and Experimental Ophthalmology. volum 242.
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Løfgren, Stefan; Søderberg, P.G.; Krane, Jostein; Midelfart, Anna. (2004) Metabolic changes in rat lens after in vivo exposure to ultraviolet irradiation: Measurements by high resolution MAS H-1 NMR spectroscopy. Investigative Ophthalmology and Visual Science. volum 45 (6).
    Vitenskapelig artikkel
  • Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Löfgren, Stefan; Söderberg, Per; Krane, Jostein; Cejkova, Jitka. (2002) Application of magic angle spinning NMR spectroscopy in study of metabolic processes in the anterior segment of the eye. Acta Ophthalmologica Scandinavica. volum 80.
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Midelfart, Anna; Krane, Jostein; Cejkova, Jitka. (2002) Analysis of immediate changes of water-soluble metabolites in alkali-burned rabbit cornea, aqueous humor and lens by high-resolution 1H-NMR spectroscopy. Graefe's Archives for Clinical and Experimental Ophthalmology. volum 240.
    Vitenskapelig artikkel
  • Risa, Øystein; Sæther, Oddbjørn; Midelfart, Anna; Krane, Jostein; Cejkova, Jitka. (2001) Analysis of Immediate Changes of Water Soluble Metabolites in Alkali Burned Rabbit Cornea, Aqueous Humor and Lens by High Resolution 1H NMR Spectroscopy. Graefe's Archives for Clinical and Experimental Ophthalmology. volum online publication.
    Vitenskapelig artikkel

Tidsskriftspublikasjoner

  • Kondziella, Daniel; Melø, Torun Margareta; Risa, Øystein; Henry, P. Gilles; Sonnewald, Ursula. (2011) IN-VIVO 13C MR SPECTROSCOPY AND MR IMAGING IN RATS WITH KAOLIN-INDUCED HYDROCEPHALUS. European Journal of Neurology. volum 18.
    Sammendrag/abstract
  • Brenner, Eiliv; Eyjolfsson, Elvar M.; Risa, Øystein; Sonnewald, Ursula. (2009) NMDA receptor hypofunction induced by MK-801: amino acid and monoamine homeostasis. Journal of Neurochemistry. volum 109.
    Sammendrag/abstract
  • Eyjolfsson, Elvar M.; Brenner, Eiliv; Risa, Øystein; Sonnewald, Ursula. (2009) Altered glutamatergic function in the chronic MK-801 model of schizophrenia. Journal of Neurochemistry. volum 109.
    Sammendrag/abstract
  • Meisingset, Tore Wergeland; Risa, Øystein; Sonnewald, Ursula; Brenner, M; Messing, A. (2009) How are glial-neuronal interactions altered by increasing expression of GFAP?. Journal of Neurochemistry. volum 110.
    Sammendrag/abstract
  • Kondziella, D; Eyjolfsson, Elvar M.; Sonnewald, Ursula; Risa, Øystein. (2008) Grey matter dysfunction in acute and chronic hydrocephalus. Journal of Neurology. volum 255.
    Sammendrag/abstract
  • Lund, TM; Clausen, M; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S.. (2007) beta-hydroxybutyrate and glucose metabolism is differently affected by neuronal activity. Journal of Neurochemistry. volum 102.
    Sammendrag/abstract
  • Hammer, Janniche; Alvestad, Silje; Qu, Hong; Risa, Øystein; Osen, Karen; Ottersen, Ole Petter; Sonnewald, Ursula. (2005) Glial-Neuronal Interactions during the latent and chorinc periods following kainate induced seizures in Rats. Journal of Neurochemistry. volum 94.
    Sammendrag/abstract
  • Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Tessem, May-Britt; Fris, M.; Søderberg, P.G.; Cejková, Jitka. (2004) Metabolic changes in the anterior segment of the eye induced by UV irradiation and measured by NMR spectroscopy. Ophthalmic Research.
    Sammendrag/abstract

Rapport

  • Risa, Øystein. (2004) Application of high-resolution NMR spectroscopy in metabolic studies of the eye. 2004.
    Doktorgradsavhandling

Undervisning

Emner

  • FY8408 - MR-avbildning
  • MEDT8011 - Innføring i MR-avbildning

Formidling

2015

  • Faglig foredrag
    Gorad, Saurabh Sayajirao; Bettum, Ingrid Johanne; Barkovskaya, Anna; Pettersen, Solveig; Moestue, Siver Andreas; Tenstad, Ellen; Øyjord, Tove Ragnhild; Risa, Øystein; Nygaard, Vigdis; Mælandsmo, Gunhild; Prasmickaite, Lina. (2015) Melanoma cell plasticity enables invasiveness by de-differentiation and metabolic reprogramming. The Norwegian Biochemical Society 51st Contact Meeting . Norsk Biokjemisk Selskap; Longyearbyen, Svalbard. 2015-02-09 - 2015-02-13.

2014

  • Poster
    Romijn, Elisabeth Inge; Risa, Øystein; Goa, Pål Erik; Widerøe, Marius; Teruel, Jose Ramon; Lilledahl, Magnus Borstad. (2014) Comparison of the collagen structure in articular cartilage measured by diffusion tensor imaging and multi-photon microscopy. Joint National PhD Conference in Medical Imaging and MedViz Conference in Bergen . MedIm; Bergen. 2014-06-17 - 2014-06-18.

2011

  • Poster
    Grinde, Maria Tunset; Moestue, Siver Andreas; Borgan, Eldrid; Risa, Øystein; Engebraaten, Olav; Gribbestad, Ingrid S. (2011) 13C HR-MAS MR spektroskopi-analyser av brystkreftxenografter. Regional Forskningskonferanse HMN-NTNU . HMN-NTNU; Stjørdal. 2011-05-11 - 2011-05-12.

2010

  • Vitenskapelig foredrag
    Grinde, Maria Tunset; Moestue, Siver Andreas; Borgan, Eldrid; Risa, Øystein; Engebraaten, Olav; Gribbestad, Ingrid S. (2010) 13C HR-MAS MRS reveals differences in glucose metabolism between two breast cancer xenograft models with different gene expression patterns. ISMRM Cancer Workshopo . ISMRM; Santa Cruz, California. 2010-09-19 - 2010-09-22.
  • Poster
    Grinde, Maria Tunset; Moestue, Siver Andreas; Eldrid, Borgan; Risa, Øystein; Engebraaten, Olav; Gribbestad, Ingrid S. (2010) 13C HR MAS MRS reveals differences in the glucose metabolism between two breast cancer xenograft models with different gene expression pattern. International Society of Magnetic Resonance in Medicine (ISMRM) . ISMRM; Stockholm. 2010-05-01 - 2010-05-07.
  • Vitenskapelig foredrag
    Grinde, Maria Tunset; Moestue, Siver Andreas; Eldrid, Borgan; Risa, Øystein; Engebraaten, Olav; Gribbestad, Ingrid S. (2010) 13C HR-MAS MRS reveals differences in glucose metabolism between two breast cancer xenograft models with different gene expression patterns. FUGE-seminar, Workshop: Karakterisering av brystkreft ; Kongsvold Fjellstue. 2010-09-01.

2009

  • Poster
    Grinde, Maria Tunset; Moestue, Siver Andreas; Risa, Øystein; Engebråten, Olav; Gribbestad, Ingrid S. (2009) HR MAS 13C MRS characterization of two breast cancer xenograft models. ESMRMB ; Antalya. 2009-10-01 - 2009-10-03.
  • Poster
    Meisingset, Tore Wergeland; Risa, Øystein; Sonnewald, Ursula; Brenner, Michael; Messing, Albee. (2009) how are glial neuronal interactions altered. Meeting of the European sociaty for neurochemistry . ESN; Leipzig. 2009-07-11 - 2009-07-14.
  • Poster
    Meldgaard Lund, Trine; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S. (2009) ASPARTATE-GLUTAMATE HOMEOSTASIS IN CEREBELLAR NEURONS CHANGES WHEN SHIFTING FROM GLUCOSE TO β-HYDROXYBUTYRATE AS SUBSTRATE. Dansk Farmakologi møde . Dansk Farmakologisk forening; Odense. 2009-01-21.
  • Poster
    Sonnewald, Ursula; Shi, Qingli; Nilsen, Linn Hege; Risa, Øystein; Gibson, Gary E.. (2009) Mild reductions in the activity of the α-ketoglutarate dehydrogenase complex disturbs neuroactive amino acid homeostasis. European Society for Neurochemistry Conference on Molecular Mechanisms in Neurological Disorders . European Society for Neurochemistry; Leipzig. 2009-07-11 - 2009-07-14.

2008

  • Poster
    Kondziella, Daniel; Eyjolfsson, Elvar M.; Sæther, Oddbjørn; Sonnewald, Ursula; Risa, Øystein. (2008) Gray matter metabolism in acute and chronic hydrocephalus. 18th Meeting of the Neurological Society . the Neurological Society; Nice. 2008-06-07 - 2008-06-11.
  • Poster
    Lund, Trine; Risa, Øystein; Sonnewald, Ursula; Schousboe, Arne; Waagepetersen, Helle S. (2008) Aspartate-glutamate homeostasis in cerebellar neurons changes when shifting from glucose to β-hydroxybutyrate as substrate. Brain Energy Meeting satelite of ISN . International Society of Neurochemistry; Beijing. 2008-06-27 - 2008-07-01.

2007

  • Poster
    Alvestad, Silje; Goa, Pål Erik; Qu, Hong; Risa, Øystein; Brekken, Christian; Sonnewald, Ursula; Haraldseth, Olav; Hammer, Janniche; Ottersen, Ole Petter; Håberg, Asta. (2007) In vivo mapping of temporospatial changes in rat brain during kainate induced epileptogenesis: a manganese enhanced magnetic resonance imaging (MEMRI) study. American Epilepsy Society, 61st Annual Meeting . American Epilepsy Society; Philadelphia, Pennsylvania. 2007-11-30 - 2007-12-04.
  • Poster
    Risa, Øystein; Melø, Torun Margareta; Sonnewald, Ursula. (2007) Quantitative Measurement of Neurotransmitters in Rat Brain Tissue Using HR MAS 13C NMR Spectroscopy and the ERETIC Method. Joint annual meeting ISMRM-ESMRMB, 2007 . International Society of Magnetic Resonance in Medicine (ISM; Berlin. 2007-05-19 - 2007-05-25.

2006

  • Poster
    Risa, Øystein; Sonnewald, Ursula; Brenner, Michael; Messing, Albee. (2006) Disturbance of the glutamate-glutamine cycle in mice with elevated glial fibrillary acidic protein (GFAP) concentrations. Brain energy meeting . International Society of neurochemistry; Lausanne. 2006-08-16 - 2006-08-19.
  • Vitenskapelig foredrag
    Midelfart, Anna; Tessem, May-Britt; Fris, Miroslav; Sæther, Oddbjørn; Risa, Øystein; Bathen, Tone. (2006) NMR analysis of ocular biochemical changes after exposure to UV radiation. Nordic Congress of Ophthalmology ; Copenhagen. 2006-06-16 - 2006-06-20.
  • Vitenskapelig foredrag
    Risa, Øystein. (2006) In vivo 13C MRS in neurochemistry. MRI and MRS workshop in Gøteborg 2006 ; Gøteborg. 2006-02-08 - 2006-02-10.

2005

  • Poster
    Hammer, Janniche; Alvestad, Silje; Qu, Hong; Risa, Øystein; Osen, Karen; Ottersen, Ole Petter; Sonnewald, Ursula. (2005) Glial-neuronal interactions during the latent and chronic periods following kainate induced seizures in rats. International society of Neurochemistry/European Society of Neurochemistry meeting ; Innsbruck. 2005-08-21 - 2005-08-25.

2003

  • Vitenskapelig foredrag
    Löfgren, Stefan; Kakar, M. K.; Risa, Øystein; Midelfart, Anna; Sæther, Oddbjørn; Krane, Jostein; Mody, Jr; Söderberg, Per. (2003) Time Dependency of In Vivo Ultraviolet Radiation (UVR)-Induced Lens Metabolic Charnges in the Rat as Analyzed by NMR Spectroscopy. Arvo . [Mangler data]; Florida, USA. 2003-05-09.
  • Vitenskapelig foredrag
    Löfgren, Stefan; Kakar, M. K.; Risa, Øystein; Midelfart, Anna; Sæther, Oddbjørn; Krane, Jostein; Mody, Jr; Söderberg, Per. (2003) Time dependency of in vivo ultraviolet radiation (UVR)-induced lens metabolic changes in the rat as analyzed by NMR spectroscopy. Investigative Ophthalmology & Visual Science . [Mangler data]; Rockville, USA. 2003-05-01.

2002

  • Poster
    Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Löfgren, Stefan; Söderberg, Per; Krane, Jostein. (2002) Metabolic changes in rat lens after in vivo exposure to ultraviolet radiation measured by Magic Angle Spinning NMR spectroscopy. The Association for Research in Vision and opthalmology . [Mangler data]; Fort Lauderdale, USA. 2002-05-10.
  • Poster
    Midelfart, Anna; Sæther, Oddbjørn; Risa, Øystein; Krane, Jostein; Cejkova, Jitka. (2002) Study of metabolic changes in cornea and lens induced by UV radiation and steroids with mas NMR spectroscopy. XV Interantional Congress of Eye Research . [Mangler data]; Genova, Switzerland. 2002-10-10.
  • Vitenskapelig foredrag
    Midelfart, Anna; Sæther, Oddbjørn; Risa, Øystein; Löfgren, Stefan; Söderberg, Per; Krane, Jostein; Cejkova, Jitka. (2002) Application of NMR spectroscopy in study of metabolic changes in the anterior segment of the eye. International symposium on cornea and contact lenses . [Mangler data]; Praha, Tsjekkiske republikk. 2002-12-10.
  • Poster
    Risa, Øystein; Anthonsen, Henrik; Seland, John Georg; Krane, Jostein; Midelfart, Anna. (2002) UVB radiation effects on the metabolites, diffusion of water and the T1 and T2 relaxation times in rat lens. Det nasjonale NMR møtet . [Mangler data]; Beitostølen. 2002-01-10.
  • Vitenskapelig foredrag
    Risa, Øystein; Sæther, Oddbjørn; Krane, Jostein; Midelfart, Anna. (2002) Bruk av NMR spektroskopi til analyse av molekylære forandringer ved ulike sykdommer og skader i øyet. Nasjonalt NMR-møte . [Mangler data]; Beitostølen. 2002-01-10.
  • Vitenskapelig foredrag
    Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein; Haraldseth, Olav; Midelfart, Anna. (2002) Proton dekoplet 19F NMR spektroskopi av medikamenter. Nasjonalt NMR-møte . [Mangler data]; Beitostølen. 2002-01-10.
  • Vitenskapelig foredrag
    Sæther, Oddbjørn; Risa, Øystein; Cejkova, Jitka; Krane, Jostein; Midelfart, Anna. (2002) 1H high-resolution magic angle spinning NMR spectroscopy of rabbit cornea. International Symposium on Cornea and Contact Lenses . [Mangler data]; Praha. 2002-12-10.
  • Vitenskapelig foredrag
    Sæther, Oddbjørn; Risa, Øystein; Cejkova, Jitka; Krane, Jostein; Midelfart, Anna. (2002) High-Resolution Magic Angle Spinning NMR Spectroscopy of Rabbit Cornea. International symposium on cornea and contact lenses . [Mangler data]; Praha, Tsjekkiske republikk. 2002-12-10.

2001

  • Populærvitenskapelig foredrag
    Midelfart, Anna; Risa, Øystein; Sæther, Oddbjørn; Söderberg, Per; Krane, Jostein. (2001) Study of metabolic profile of cornea and lens by magic angle spinning NMR spectroscopy. Ever 2001 . [Mangler data]; Alicante, Spain. 2001-10-13.
  • Poster
    Risa, Øystein; Midelfart, Anna; Sæther, Oddbjørn; Löfgren, Stefan; Söderberg, Per; Krane, Jostein. (2001) Measurment of Metabolic Changes by HRMAS 1H NMR Spectroscopy in Rat Lenses After Ultraviolet Radiation Injury. 15th International Meeting on NMR Spectroscopy . [Mangler data]; University of Durham, UK. 2001-07-12.
  • Poster
    Sæther, Oddbjørn; Krane, Jostein; Risa, Øystein; Midelfart, Anna. (2001) 19F NMR spectroscopy of fluorinated drugs used in eye treatment. 15th International Meeting on NMR Spectroscopy . [Mangler data]; University of Durham, United Kingdom. 2001-07-12.

2000

  • Poster
    Risa, Øystein; Sæther, Oddbjørn; Krane, Jostein; Cejkova, Jitka. (2000) Metabolic analysis of alkali-burned rabbit cornea, aqueous humor and lens by high-resolution H-NMR spectroscopy. XXXIV Nordic Congress of ophthalmology . [Mangler data]; 18.06.2000-21.06.2000.
  • Poster
    Sæther, Oddbjørn; Risa, Øystein; Krane, Jostein; Midelfart, Anna. (2000) NMR spectroscopy - a tool for non-invasive in vivo monitoring of drugs in the eye?. XXXIV Nordic Congress of Ophthalmology . [Mangler data]; Reykjavik, 18-21 june 2000.
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