2026

• Walaas, Gunnar Andreas Enerhaug; Sridhar, Arun; Kuraas, Lusie Frostvoll; Sæterstad, Siri; Schioldborg, Amanda Yin; Granlund, Atle van Beelen; Sandvik, Arne Kristian; Østvik, Ann Elisabeth; Bakke, Ingunn; Bruland, Torunn. (2026) Patient-matched transcriptomics of in vivo and in vitro colonic epithelium substantiate organoids as a translational model for ulcerative colitis. Scientific Reports
  Academic article

2025

• Hoz-Martín, María P. de la; González-Fernández, Juan; Andreu-Ballester, Juan Carlos; Høivik, Marte Lie; Ricanek, Petr; Bruland, Torunn; Sandvik, Arne Kristian; Cuéllar, Carmen; Catalan Serra, Ignacio. (2025) Prevalence of Anti-Anisakis simplex Antibodies in a Cohort of Patients with Inflammatory Bowel Disease in Norway. Pathogens
  Academic article
• Sridhar, Arun; Bakke, Ingunn; Gopalakrishnan, Shreya; Osoble, Nimo Mukhtar Mohamud; Hammarqvist, Emilie Prytz; Pettersen, Henrik Sahlin; Sandvik, Arne Kristian; Østvik, Ann Elisabeth; Hansen, Marianne Dore; Bruland, Torunn. (2025) Tofacitinib and budesonide treatment affect stemness and chemokine release in IBD patient-derived colonoids. Scientific Reports
  Academic article

2024

• Campo, Martin; Hjelle, Heidi; Granlund, Atle van Beelen; Sandvik, Arne Kristian; Ness-Jensen, Eivind. (2024) The relationship between weight change and inflammatory bowel disease. A population-based cohort study, the HUNT study. Scandinavian Journal of Gastroenterology
  Academic article

2023

• Walaas, Gunnar Andreas; Gopalakrishnan, Shreya; Bakke, Ingunn; Skovdahl, Helene Kolstad; Flatberg, Arnar; Østvik, Ann Elisabeth; Sandvik, Arne Kristian; Bruland, Torunn. (2023) Physiological hypoxia improves growth and functional differentiation of human intestinal epithelial organoids. Frontiers in Immunology
  Academic article
• Catalan-Serra, Ignacio; Thorsvik, Silje; Beisvag, Vidar; Bruland, Torunn; Underhill, David; Sandvik, Arne Kristian; Granlund, Atle van Beelen. (2023) Fungal Microbiota Composition in Inflammatory Bowel Disease Patients: Characterization in Different Phenotypes and Correlation With Clinical Activity and Disease Course. Inflammatory Bowel Diseases
  Academic article
• Gopalakrishnan, Shreya; Bakke, Ingunn; Hansen, Marianne Dore; Skovdahl, Helene Kolstad; Granlund, Atle van Beelen; Sandvik, Arne Kristian; Bruland, Torunn. (2023) Comprehensive protocols for culturing and molecular biological analysis of IBD patient-derived colon epithelial organoids. Frontiers in Immunology
  Academic article

2022

• Røyset, Elin Synnøve; Pettersen, Henrik Sahlin; Xu, Weili; Larbi, Anis; Sandvik, Arne Kristian; Steigen, Sonja Eriksson; Catalan-Serra, Ignacio; Bakke, Ingunn. (2022) Deep learning-based image analysis reveals significant differences in the number and distribution of mucosal CD3 and γδ T cells between Crohn's disease and ulcerative colitis. The journal of pathology. Clinical research
  Academic article
• Olaisen, Maya; Richard, Mathias L.; Beisvag, Vidar; Granlund, Atle van Beelen; Røyset, Elin Synnøve; Rué, Olivier; Martinsen, Tom Christian; Sandvik, Arne Kristian; Sokol, Harry; Fossmark, Reidar. (2022) The ileal fungal microbiota is altered in Crohn's disease and is associated with the disease course. Frontiers in Medicine
  Academic article
• Gopalakrishnan, Shreya; Hansen, Marianne Dore; Skovdahl, Helene Kolstad; Roseth, Ingrid Aass; Granlund, Atle van Beelen; Østvik, Ann Elisabet; Bakke, Ingunn; Sandvik, Arne Kristian; Bruland, Torunn. (2022) Tofacitinib Downregulates TNF and Poly(I:C)-Dependent MHC-II Expression in the Colonic Epithelium. Frontiers in Immunology
  Academic article
• Sæterstad, Siri; Østvik, Ann Elisabet; Røyset, Elin Synnøve; Bakke, Ingunn; Sandvik, Arne Kristian; Granlund, Atle van Beelen. (2022) Profound gene expression changes in the epithelial monolayer of active ulcerative colitis and Crohn's disease. PLOS ONE
  Academic article

2021

• Escudero-Hernandez, Celia; Granlund, Atle van Beelen; Bruland, Torunn; Sandvik, Arne Kristian; Koch, Stefan; Østvik, Ann Elisabet; Münch, Andreas. (2021) Transcriptomic Profiling of Collagenous Colitis Identifies Hallmarks of Nondestructive Inflammatory Bowel Disease. Cellular and Molecular Gastroenterology and Hepatology (CMGH)
  Academic article
• Bakke, Ingunn; Walaas, Gunnar Andreas; Bruland, Torunn; Røyset, Elin Synnøve; Granlund, Atle van Beelen; Escudero-Hernandez, Celia; Thorsvik, Silje; Münch, Andreas; Sandvik, Arne Kristian; Østvik, Ann Elisabet. (2021) Mucosal and faecal neutrophil gelatinase-associated lipocalin as potential biomarkers for collagenous colitis. Journal of gastroenterology
  Academic article
• Bruland, Torunn; Østvik, Ann Elisabet; Sandvik, Arne Kristian; Hansen, Marianne Dore. (2021) Host-Viral Interactions in the Pathogenesis of Ulcerative Colitis. International Journal of Molecular Sciences
  Academic literature review
• Skovdahl, Helene Kolstad; Gopalakrishnan, Shreya; Svendsen, Tarjei Dahl; Granlund, Atle van Beelen; Bakke, Ingunn; Ginbot, Zekarias; Thorsvik, Silje; Flatberg, Arnar; Sporsheim, Bjørnar; Ostrop, Jenny. (2021) Patient derived colonoids as drug testing platforms-Critical importance of oxygen concentration. Frontiers in Pharmacology
  Academic article

2020

• Olaisen, Maya; Flatberg, Arnar; Granlund, Atle van Beelen; Røyset, Elin Synnøve; Martinsen, Tom Christian; Sandvik, Arne Kristian; Fossmark, Reidar. (2020) Bacterial Mucosa-associated Microbiome in Inflamed and Proximal Noninflamed Ileum of Patients With Crohn's Disease. Inflammatory Bowel Diseases
  Academic article
• Sandvik, Arne Kristian; Østvik, Ann Elisabet. (2020) IBD-forskning i Midt-Norge. NGF-nytt
  Popular science article
• Escudero-Hernandez, Celia; Granlund, Atle van Beelen; Bruland, Torunn; Sandvik, Arne Kristian; Koch, Stefan; Østvik, Ann Elisabet; Münch, Andreas. (2020) Whole-genome RNA sequencing in collagenous colitis: a subgroup analysis. Journal of Crohn`s and Colitis
  Conference abstract
• Sæterstad, Siri; Østvik, Ann Elisabet; Sandvik, Arne Kristian; Granlund, Atle van Beelen. (2020) Gene expression landscape of epithelial monolayer in inflammatory bowel disease. Journal of Crohn`s and Colitis
  Conference abstract
• Bakke, Ingunn; Bruland, Torunn; Eriksen, Kaja Sørgård; Skovdahl, Helene Kolstad; Gopalakrishnan, Shreya; Thorsvik, Silje; Granlund, Atle van Beelen; Sandvik, Arne Kristian; Østvik, Ann Elisabet. (2020) Differences in expression of PPARγ in small intestine vs. colon impact the effect of 5-aminosalicylates in inflammatory bowel disease. Journal of Crohn`s and Colitis
  Conference abstract
• Walaas, Gunnar Andreas; Bakke, Ingunn; Granlund, Atle van Beelen; Escudero-Hernandez, Celia; Bruland, Torunn; Røyset, Elin Synnøve; Thorsvik, Silje; Münch, Andreas; Østvik, Ann Elisabet; Sandvik, Arne Kristian. (2020) Neutrophil gelatinase-associated lipocalin (NGAL) as biomarker in collagenous colitis. Journal of Crohn`s and Colitis
  Conference abstract
• Jørandli, Jonas Woll; Thorsvik, Silje; Skovdahl, Helene Kolstad; Kornfeld, Benedikt; Sæterstad, Siri; Gustafsson, Björn; Sandvik, Arne Kristian; Granlund, Atle van Beelen. (2020) The serotonin reuptake transporter is reduced in the epithelium of active Crohn's disease and ulcerative colitis. American Journal of Physiology - Gastrointestinal and Liver Physiology
  Academic article
• Østvik, Ann Elisabet; Svendsen, Tarjei Dahl; Granlund, Atle van Beelen; Doseth, Berit; Skovdahl, Helene Kolstad; Bakke, Ingunn; Thorsvik, Silje; Afroz, Wahida; Walaas, Gunnar Andreas; Mollnes, Tom Eirik. (2020) Intestinal epithelial cells express immunomodulatory ISG15 during active ulcerative colitis and Crohn's disease. Journal of Crohn's and Colitis
  Academic article
• Aasarød, Kristin Matre; Waldum, Helge; Stunes, Astrid Kamilla; Sandvik, Arne Kristian; Flatberg, Arnar; Mjønes, Patricia; Syversen, Unni; Bakke, Ingunn; Fossmark, Reidar. (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
  Academic article
• Olaisen, Maya; Flatberg, Arnar; Granlund, Atle van Beelen; Røyset, Elin Synnøve; Martinsen, Tom Christian; Sandvik, Arne Kristian; Fossmark, Reidar. (2020) P833 Bacterial mucosa-associated microbiome in inflamed and proximal non-inflamed ileum of patients with Crohn’s disease. Journal of Crohn's and Colitis
  Conference abstract

2019

• Olaisen, Maya; Spigset, Olav; Flatberg, Arnar; Granlund, Atle van Beelen; Brede, wenche Rødseth; Albrektsen, Grethe; Røyset, Elin Synnøve; Gilde, Bodil; Sandvik, Arne Kristian; Martinsen, Tom Christian. (2019) Mucosal 5-aminosalicylic acid concentration, drug formulation and mucosal microbiome in patients with quiescent ulcerative colitis. Alimentary Pharmacology and Therapeutics
  Academic article
• Thorsvik, Silje; Granlund, Atle van Beelen; Svendsen, Tarjei Dahl; Bakke, Ingunn; Røyset, Elin Synnøve; Flo, Trude Helen; Damås, Jan Kristian; Østvik, Ann Elisabet; Bruland, Torunn; Sandvik, Arne Kristian. (2019) Ulcer-associated cell lineage expresses genes involved in regeneration and is hallmarked by high neutrophil gelatinase-associated lipocalin (NGAL) levels. Journal of Pathology
  Academic article

2018

• Thorsvik, Silje; Bakke, Ingunn; Granlund, Atle van Beelen; Røyset, Elin Synnøve; Damås, Jan Kristian; Østvik, Ann Elisabeth; Sandvik, Arne Kristian. (2018) Expression of neutrophil gelatinase-associated lipocalin (NGAL) in the gut in Crohn's disease. Cell and Tissue Research
  Academic article
• Østvik, Ann Elisabet; Svendsen, Tarjei Dahl; Granlund, Atle van Beelen; Doseth, Berit; Bakke, Ingunn; Thorsvik, Silje; Afroz, Wahida; Skovdahl, Helene Kolstad; Mollnes, Tom Eirik; Gustafsson, Björn. (2018) Tu1753 - type 1 Interferon Signaling in Intestinal Epithelial Cells During Active Inflammatory Bowel Disease. Gastroenterology
  Conference abstract
• Schmitt, Caroline; Lenglet, Hugo; Yu, Angèle; Delaby, Constance; Benecke, Arndt; Lefebvre, Thibaud; Lettéron, Philippe; Paradis, Valérie; Wahlin, Staffan; Sandberg, Sverre. (2018) Recurrent attacks of acute hepatic porphyria: major role of the chronic inflammatory response in the liver. Journal of Internal Medicine
  Academic article
• Catalan-Serra, Ignacio; Andreu-Ballester, Juan Carlos; Bruland, Torunn; Sandvik, Arne Kristian. (2018) Gammadelta T Cells: Unconventional T Cells Involved in IBD Pathogenesis. Digestive Diseases and Sciences
  Commentary
• Skovdahl, Helene Kolstad; Damås, Jan Kristian; Granlund, Atle van Beelen; Østvik, Ann Elisabet; Doseth, Berit; Bruland, Torunn; Mollnes, Tom Eirik; Sandvik, Arne Kristian. (2018) C-C Motif Ligand 20 (CCL20) and C-C Motif Chemokine Receptor 6 (CCR6) in Human Peripheral Blood Mononuclear Cells: Dysregulated in Ulcerative Colitis and a Potential Role for CCL20 in IL-1β Release. International Journal of Molecular Sciences
  Academic article
• Waldum, Helge; Öberg, Kjell; Sørdal, Øystein Finset; Sandvik, Arne Kristian; Gustafsson, Björn; Mjønes, Patricia; Fossmark, Reidar. (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
  Academic literature review

2017

• Thorsvik, Silje; Damås, Jan Kristian; Granlund, Atle van Beelen; Flo, Trude Helen; Bergh, Kåre; Østvik, Ann Elisabet; Sandvik, Arne Kristian. (2017) Fecal neutrophil gelatinase-associated lipocalin as a biomarker for inflammatory bowel disease. Journal of Gastroenterology and Hepatology
  Academic article
• Vange, Pål; Bruland, Torunn; Doseth, Berit; Fossmark, Reidar; Sousa, Mirta; Beisvag, Vidar; Sørdal, Øystein Finset; Qvigstad, Gunnar; Waldum, Helge; Sandvik, Arne Kristian. (2017) The cytoprotective protein clusterin is overexpressed in hypergastrinemic rodent models of oxyntic preneoplasia and promotes gastric cancer cell survival. PLOS ONE
  Academic article
• catalan-Serra, Ignacio; Sandvik, Arne Kristian; Bruland, Torunn; Andreu-Ballester, Juan Carlos. (2017) Gammadelta T cells in Crohn's disease: a new player in the disease pathogenesis?. Journal - Crohn's and Colitis Foundation of Canada
  Academic literature review
• Mjønes, Patricia; Nordrum, Ivar Skjåk; Sørdal, Øystein Finset; Sagatun, Liv; Fossmark, Reidar; Sandvik, Arne Kristian; Waldum, Helge. (2017) Expression of the cholecystokinin-B receptor in neoplastic gastric cells. Hormones and Cancer
  Academic article

2016

• Aasarød, Kristin Matre; Ramezanzadehkoldeh, Masoud; Shabestari, Maziar; Mosti, Mats Peder; Stunes, Astrid Kamilla; Reseland, Janne Elin; Beisvag, Vidar; Eriksen, Erik Fink; Sandvik, Arne Kristian; Erben, Reinhold. (2016) Skeletal effects of a gastrin receptor antagonist in H+/K+ATPase beta subunit KO mice. Journal of Endocrinology
  Academic article
• Bhandari, Sabin; Bakke, Ingunn; Kumar, J. Dinesh; Beisvag, Vidar; Sandvik, Arne Kristian; Thommesen, Liv; Varro, Andrea; Nørsett, Kristin. (2016) Connective tissue growth factor is activated by gastrin and involved in gastrin-induced migration and invasion. Biochemical and Biophysical Research Communications - BBRC
  Academic article
• Brenna, Øystein; Furnes, Marianne Waldum; Munkvold, Bjørn; Kidd, Mark; Sandvik, Arne Kristian; Gustafsson, Björn. (2016) Cellular localization of guanylin and uroguanylin mRNAs in human and rat duodenal and colonic mucosa. Cell and Tissue Research
  Academic article

2015

• Florholmen, Jon; Sandvik, Arne Kristian. (2015) Achievements and challenges in the management of inflammatory bowel disease. Scandinavian Journal of Gastroenterology
  Editorial
• Vatn, Morten H; Sandvik, Arne Kristian. (2015) Inflammatory bowel disease. Scandinavian Journal of Gastroenterology
  Academic article
• Hansen, Maren Fridtjofsen; Johansen, Jostein; Bjørnevoll, Inga; Sylvander, Anna Elisabeth; Steinsbekk, Kristin Solum; Sætrom, Pål; Sandvik, Arne Kristian; Drabløs, Finn; Sjursen, Wenche. (2015) A novel POLE mutation associated with cancers of colon, pancreas, ovaries and small intestine. Familial Cancer
  Academic article
• Hansen, Maren Fridtjofsen; Johansen, Jostein; Bjørnevoll, Inga; Sylvander, Anna Elisabeth; Steinsbekk, Kristin Solum; Sætrom, Pål; Sandvik, Arne Kristian; Drabløs, Finn; Sjursen, Wenche. (2015) A novel POLE variant, identified by exome sequencing, causes colorectal- and extra-colonic cancers. Familial Cancer
  Conference abstract
• Rustad, Even Holth; Dai, Hong Yan; Hov, Håkon; Coward, Eivind; Beisvag, Vidar; Myklebost, Ola; Hovig, Johannes Eivind; Nakken, Sigve; Vodak, Daniel; Meza, Leonardo Zepeda. (2015) BRAF V600E mutation in early-stage multiple myeloma: good response to broad acting drugs and no relation to prognosis. Blood Cancer Journal
  Academic article
• Skovdahl, Helene Kolstad; Granlund, Atle Van Beelen; Østvik, Ann Elisabet; Bruland, Torunn; Bakke, Ingunn; Torp, Sverre Helge; Damås, Jan Kristian; Sandvik, Arne Kristian. (2015) Expression of CCL20 and its corresponding receptor CCR6 is enhanced in active inflammatory bowel disease, and TLR3 mediates CCL20 expression in colonic epithelial cells. PLOS ONE
  Academic article
• 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
  Academic article
• Brenna, Øystein; Bruland, Torunn; Furnes, Marianne Waldum; Granlund, Atle Van Beelen; Drozdov, Ignat; Emgård, Johanna; Brønstad, Gunnar; Kidd, Mark; Sandvik, Arne Kristian; Gustafsson, Björn. (2015) The guanylate cyclase-C signaling pathway is down-regulated in inflammatory bowel disease. Scandinavian Journal of Gastroenterology
  Academic article
• Vange, Pål; Bruland, Torunn; Beisvag, Vidar; Erlandsen, Sten Even; Flatberg, Arnar; Doseth, Berit; Sandvik, Arne Kristian; Bakke, Ingunn. (2015) Genome-wide analysis of the oxyntic proliferative isthmus zone reveals ASPM as a possible gastric stem/progenitor cell marker overexpressed in cancer. Journal of Pathology
  Academic article

2014

• 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
  Conference abstract
• 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)
  Academic article
• 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. Norges teknisk-naturvitenskapelige universitet
  Doctoral thesis
• Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Gustafsson, Björn; Torp, Sverre Helge; Espevik, Terje; Mollnes, Tom Eirik; Damås, Jan Kristian; Sandvik, Arne Kristian. (2014) Mucosal toll-like receptor 3-dependent synthesis of complement factor B and systemic complement activation in inflammatory bowel disease. Inflammatory Bowel Diseases
  Academic article
• Zhao, Chun-Mei; Kodama, Yosuke; Flatberg, Arnar; Beisvag, Vidar; Kulseng, Bård Eirik; Sandvik, Arne Kristian; Rehfeld, Jens F.; Chen, Duan. (2014) Gene expression profiling of gastric mucosa in mice lacking CCK and gastrin receptors. Regulatory Peptides
  Academic article
• Zhao, Chun-Mei; Hayakawa, Yoku; Kodama, Yosuke; Muthupalani, Sureshkumar; Westphalen,, Christoph B.; Andersen, Gøran Troseth; Flatberg, Arnar; Johannessen, Helene; Friedman, Richard A.; Renz, Bernhard W.. (2014) Denervation suppresses gastric tumorigenesis. Science Translational Medicine
  Academic article

2013

• Brenna, Øystein; Furnes, Marianne Waldum; Drozdov, Ignat; Granlund, Atle Van Beelen; Flatberg, Arnar; Sandvik, Arne Kristian; Zwiggelaar, Rosalie; Mårvik, Ronald; Nordrum, Ivar Skjåk; Kidd, Mark. (2013) Relevance of TNBS-Colitis in Rats: A Methodological Study with Endoscopic, Historical and Transcripttomic Characterization and Correlation to IBD. PLOS ONE
  Academic article
• Brenna, Øystein; Furnes, Marianne Waldum; Drozdov, Ignat; Granlund, Atle Van Beelen; Svendsen, Tarjei D.; Jørandli, Jonas W.; Flatberg, Arnar; Zwiggelaar, Rosalie; Nordrum, Ivar Skjåk; Sandvik, Arne. (2013) Su1771 Reduced Guanylate Cyclase C Signaling in IBD May Sustain Inflammation, Epithelial Barrier Dysfunction and Increase Cancer Risk in IBD. Gastroenterology
  Conference abstract
• Granlund, Atle Van Beelen; Østvik, Ann Elisabet; Brenna, Øystein; Torp, Sverre Helge; Gustafsson, Björn; Sandvik, Arne Kristian. (2013) REG gene expression in inflamed and healthy colon mucosa explored by in situ hybridisation. Cell and Tissue Research
  Academic article
• Zwiggelaar, Rosalie Theda Margien; Fossmark, Reidar; Kidd, Mark; Furnes, Marianne Waldum; Sandvik, Arne Kristian; Waldum, Helge; Gustafsson, Bjørn Inge. (2013) Tu1089 Somatostatin and the Slow-Growing Nature of Small Intestinal Neuroendocrine Tumors. Gastroenterology
  Conference abstract
• Østvik, Ann Elisabet; Granlund, Atle; Bugge, Marit; Nilsen, Nadra; Torp, Sverre Helge; Waldum, Helge; Damås, Jan Kristian; Espevik, Terje; Sandvik, Arne Kristian. (2013) Enhanced expression of CXCL10 in inflammatory bowel disease: Potential role of mucosal toll-like 3 receptor stimulation. Inflammatory Bowel Diseases
  Academic article
• Misund, Kristine; Selvik, Linn-Karina M.; Rao, Shalini; Nørsett, Kristin Gabestad; Bakke, Ingunn; Sandvik, Arne; Lægreid, Astrid; Bruland, Torunn; Prestvik, Wenche S; Thommesen, Liv. (2013) NR4A2 is regulated by Gastrin and involved in gastrin-induced migration and invasion of gastric adenocarcinoma cells. PLOS ONE
  Academic article
• Kodama, Yosuke; Zhao, Chun-Mei; Muthupalani, Sureshkumar; Flatberg, Arnar; Friedman, Richard A.; Sandvik, Arne; Beisvag, Vidar; Johannessen, Helene; Hayakawa, Yoku; Tomita, Hiroyuki. (2013) Denervation Suppresses Gastric Cancer Initiation and Progression Through Inhibition of the Cancer Niche. Gastroenterology
  Conference abstract
• Granlund, Atle Van Beelen; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, Ignat; Gustafsson, Björn; Kidd, Mark; Beisvag, Vidar; Torp, Sverre Helge; Waldum, Helge; Martinsen, Tom Christian. (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
  Academic article
• Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Beisvag, Vidar; Waldum, Helge; Flo, Trude Helen; Espevik, Terje; Damås, Jan Kristian; Sandvik, Arne Kristian. (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
  Academic article

2012

• Chin, A; Svejda, B; Gustafsson, Björn; Granlund, Atle Van Beelen; Sandvik, Arne Kristian; Timberlake, Alan; Sumpio, B; Pfragner, R; Modlin, IM; Kidd, M. (2012) The role of mechanical forces and adenosine in the regulation of intestinal enterochromaffin cell serotonin secretion. American Journal of Physiology - Gastrointestinal and Liver Physiology
  Academic article
• Brenna, Øystein; Furnes, Marianne Waldum; Granlund, Atle; Flatberg, Arnar; Drozdov, Ignat; Sandvik, Arne Kristian; Zwiggelaar, Rosalie; Mårvik, Ronald; Nordrum, Ivar Skjåk; Kidd, Mark. (2012) Tu1912 Endoscopic, Histological and Transcriptomic Characterization of TNBS-Colitis in Rats, a Model for IBD. Gastroenterology
  Conference abstract
• Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge; Espevik, Terje; Damås, Jan Kristian; Sandvik, Arne Kristian. (2012) Induction of Lipocalin-2 in Colonic Epithelial Cells in Inflammatory Bowel Disease. Inflammatory Bowel Diseases
  Conference abstract
• Østvik, Ann Elisabet; Nilsen, Nadra; Granlund, Atle; Torp, Sverre Helge; Flatberg, Arnar; Waldum, Helge; Espevik, Terje; Damås, Jan Kristian; Sandvik, Arne Kristian. (2012) Enhanced expression of CXCL10 in inflammatory bowel disease-role of mucosal TLR3 stimulation. Journal of Crohn’s and Coltis Supplements
  Conference abstract
• Granlund, Atle; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, I; Gustafsson, Björn; Kidd, M; Beisvag, Vidar; Torp, Sverre Helge; Waldum, Helge; Martinsen, Tom Christian. (2012) Dissecting the IBD Transcriptome. Inflammatory Bowel Diseases
  Conference abstract
• Erlandsen, Sten Even; Qvigstad, Gunnar; Fossmark, Reidar; Bakke, Ingunn; Chen, Duan; Sandvik, Arne Kristian. (2012) Regulated endocrine-specific protein 18 (RESP18) is localized to and regulated in A-like cells and G-cells in rat stomach. Regulatory Peptides
  Academic article
• Kodama, Yosuke; Zhao, Chun-Mei; Quante, Michael; Muthupalani, Sureshkumar; Flatberg, Arnar; Friedman, Richard A.; Sandvik, Arne Kristian; Fox, James G.; Kaneko, Kazuhiro; Wang, Timothy C.. (2012) Vagotomy Suppresses Gastric Cancer Progression in Mice. Gastroenterology
  Conference abstract
• Kodama, Yosuke; Flatberg, Arnar; Anderssen, Endre; Sandvik, Arne Kristian; Chen, Duan; Zhao, Chun-Mei. (2012) Food Intake Associated Gene Expression Profiles in the Stomach of Genetically Targeted Mice Deficient in CCK1 Receptor and/or CCK2 Receptor. Gastroenterology
  Conference abstract
• Fjeldbo, Christina Sæten; Bakke, Ingunn; Erlandsen, Sten Even; Holmseth, Jannicke; Lægreid, Astrid; Sandvik, Arne Kristian; Thommesen, Liv; Bruland, Torunn. (2012) Gastrin upregulates the pro-survival factor secretory clusterin (sCLU) in adenocarcinoma cells and in oxyntic mucosa of hypergastrinemic rats. American Journal of Physiology - Gastrointestinal and Liver Physiology
  Academic article
• Waldum, Helge; Sandvik, Arne Kristian; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. (2012) Withdrawing PPI Therapy: Response to Metz et al. American Journal of Gastroenterology
  Commentary

2011

• Granlund, Atle Van Beelen; Beisvag, Vidar; Torp, Sverre Helge; Flatberg, Arnar; Kleveland, Per Martin; Østvik, Ann Elisabet; Waldum, Helge; Sandvik, Arne Kristian. (2011) Activation of REG family proteins in colitis. Scandinavian Journal of Gastroenterology
  Academic article
• Zhao, Chun-Mei; Kodama, Yosuke; Flatberg, Arnar; Sandvik, Arne Kristian; Chen, Duan. (2011) Stomach-Bone Axis: Possible Involvement of Signaling Pathways and Vitamin D Governing Bone Metabolism. Gastroenterology
  Conference abstract
• Kodama, Yosuke; Zhao, Chun-Mei; Quante, Michael; Muthupalani, Sureshkumar; Flatberg, Arnar; Sandvik, Arne Kristian; Fox, James G.; Wang, Timothy C.; Chen, Duan. (2011) Evidence for Mechanism of Vagal Innervation in Gastric Cancer Initiation Involving Signaling Pathways Governing Stem Cells in Mice. Gastroenterology
  Conference abstract
• Beisvag, Vidar; Kauffmann, Audrey; Malone, James; Foy, Carole; Salit, Marc; Schimmel, H; Bongcam-Rudloff, Eric; Landegren, Ulf; Parkinson, Helen; Huber, Wolfgang. (2011) Contributions of the EMERALD project to assessing and improving microarray data quality. BioTechniques
  Academic article

2010

• Webber, Philip Richard; Aarsand, Aasne Karine; Sandvik, Arne Kristian; Skadberg, Øyvind; Lindberg, Morten; Sandberg, Sverre. (2010) Acute porphyrias may be overlooked in patients taking methenamine hippurate. Clinical Chemistry and Laboratory Medicine
  Commentary
• Zhao, Chun-Mei; Kodama, Yosuke; Flatberg, Arnar; Anderssen, Endre; Sandvik, Arne Kristian; Chen, Duan. (2010) Gastric ECL cells, rather than gastric acid, play an important role in gut-bone axis. Gastroenterology
  Conference abstract
• Follestad, Turid; Jørstad, Tommy Stokmo; Erlandsen, Sten Even; Sandvik, Arne Kristian; Bones, Atle M.; Langaas, Mette. (2010) A Bayesian hierarchical model for quantitative real-time PCR data. Statistical Applications in Genetics and Molecular Biology
  Academic article
• 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
  Academic literature review
• Martinsen, Tom Christian; Skogaker, Nan E Tostrup; Fossmark, Reidar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Bendheim, Marianne Østensen; Bakkelund, Karin Elvenes; Waldum, Helge. (2010) Neuroendocrine Cells in Diffuse Gastric Carcinomas: An Ultrastructural Study With Immunogold Labeling of Chromogranin A. Applied immunohistochemistry & molecular morphology (Print)
  Academic article
• Waldum, Helge L.; Hauso, Øyvind; Sandvik, AK. (2010) PPI-induced hypergastrinemia and Barrett's mucosa: the fog thickens. Gut
  Commentary

2009

• Beisvag, Vidar; Kemi, Ole Johan; Arbo, Ingerid Brænne; Loennechen, Jan Pål; Sandvik, Arne Kristian; Langaas, Mette; Ellingsen, Øyvind; Wisløff, Ulrik. (2009) Pathological and physiological hypertrophies are regulated by distinct gene programs. European Journal of Cardiovascular Prevention & Rehabilitation
  Academic article
• Zhao, Chun-Mei; Kodama, Yosuke; Sandvik, Arne Kristian; Chen, Duan. (2009) Differentiation of Gastric ECL Cells in CCK 1+2 Receptor Double Knockout Mice. Gastroenterology
  Academic article
• Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian; Fossmark, Reidar; Gustafsson, Björn; Sandvik, Arne Kristian. (2009) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
  Academic literature review

2008

• Nørsett, Kristin; Lægreid, Astrid; Kusnierczyk, Waclaw; Langaas, Mette; Ylving, S; Fossmark, Reidar; Myhre, Simen; Falkmer, Sture Emil; Waldum, Helge; Sandvik, Arne Kristian. (2008) Changes in gene expression of gastric mucosa during therapeutic acid inhibition. European Journal of Gastroenterology and Hepathology
  Academic article
• Juel, Ingebjørg s.; Solligård, Erik; Tvedt, Kåre E; Skogvoll, Eirik; Jynge, Per; Beisvåg, Vidar; Erlandsen, Sten Even; Sandvik, Arne Kristian; Aadahl, Petter; Grønbech, Jon Erik. (2008) Post-ischaemic restituted intestinal mucosa is more resistant to further ischaemia than normal mucosa in the pig. Scandinavian Journal of Clinical and Laboratory Investigation
  Academic article
• Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian; Fossmark, Reidar; Gustafsson, Bjorn; Sandvik, Arne Kristian. (2008) Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology
  Academic literature review
• Waldum, Helge; Sandvik, Arne Kristian; Brenna, Eiliv; Fossmark, Reidar; Qvigstad, Gunnar; soga, j. (2008) Classification of tumours. Journal of Experimental and Clinical Cancer Research
  Academic literature review

2007

• Beisvåg, Vidar; Ellingsen, Øyvind; Lægreid, Astrid; Sandvik, Arne Kristian. (2007) Physiological Genomics of Heart Failure: From Technology to Physiology. Norges teknisk-naturvitenskapelige universitet
  Doctoral thesis
• 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
  Academic article
• Erlandsen, Sten Even; Fykse, Vidar; Waldum, Helge; Sandvik, Arne Kristian. (2007) Octreotide induces apoptosis in the oxyntic mucosa. Molecular and Cellular Endocrinology
  Academic article

2006

• Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Bakke, Ingunn. (2006) Gastrin and cell proliferation.
  Academic chapter
• Beisvåg, Vidar; Lehre, Per Kristian; Midelfart, Herman; Aass, H; Geiran, O; Sandvik, Arne Kristian; Lægreid, Astrid; Komorowski, Jan; Ellingsen, Øyvind. (2006) Aetiology-specific patterns in end-stage heart failure patients identified by functional annotation and classification of microarray data. European Journal of Heart Failure
  Academic article
• Beisvag, Vidar; Lehre, PK; Midelfart, H; Aas, Halfdan; Geiran, Odd; Sandvik, Arne K; Lægreid, A.; Komorowski, J.; Ellingsen, Øyvind. (2006) Aetiology-specific patterns in end-stage heart failure patients identified by functional annotation and classification of microarray data. European Journal of Heart Failure
  Academic article
• Beisvåg, Vidar; Jünge, Frode KR; Bergum, Hallgeir; Jølsum, Lars; Lydersen, Stian; Gunther, Clara-Cecilie; Ramampiaro, Heri; Langaas, Mette; Sandvik, Arne Kristian; Lægreid, Astrid. (2006) GeneTools - application for functional annotation and statistical hypothesis testing. BMC Bioinformatics
  Book review
• Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2006) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
  Academic literature review
• Fykse, Vidar; Solligård, Erik; Bendheim, Marianne Østensen; Chen, Duan; Grønbech, Jon Erik; Sandvik, Arne Kristian; Waldum, Helge. (2006) ECL cell histamine mobilization and parietal cell stimulation in the rat stomach studied by microdialysis and electron microscopy. Acta Physiologica
  Academic article

2005

• Hofsli, Eva; Thommesen, Liv; Yadetie, Fekadu; Langaas, Mette; Sandvik, Arne K.; Lægreid, Astrid. (2005) Identification of novel growth factor-responsive genes in neuroendocrine gastrointestinal tumour cells. British Journal of Cancer
  Academic article
• Sandvik, Arne Kristian; Alsberg, Bjørn Kåre; Nørsett, Kristin; Yadetie, Fekadu; Waldum, Helge; Lægreid, Astrid. (2005) Gene expression analysis and clinical diagnosis. Clinica Chimica Acta
  Academic literature review
• Nørsett, Kristin; Lægreid, Astrid; Langaas, Mette; Wørlund, Sara Maria; Fossmark, Reidar; Waldum, Helge; Sandvik, Arne Kristian. (2005) Molecular characterization of rat gastric mucosal response to potent acid inhibition. Physiological Genomics
  Academic article
• Hofsli, Eva; Thommesen, Liv; Yadetie, Fekadu; Langaas, Mette; Kusnierczyk, Waclaw; Falkmer, Ursula; Sandvik, Arne Kristian; Lægreid, Astrid. (2005) Identification of novel growth factor-responsive genes in neuroendocrine gastrointestinal tumour cells. British Journal of Cancer
  Academic article
• 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
  Academic article
• 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
  Academic article
• Martinsen, Tom Christian; Bakke, Ingunn; Chen, Duan; Sandvik, Arne Kristian; Zahlsen, Kolbjørn; Aamo, T.; Waldum, Helge. (2005) Ciprofibrate stimulates the gastrin-producing cell by acting luminally on antral PPAR-alfa. American Journal of Physiology - Gastrointestinal and Liver Physiology
  Academic article

2004

• Yadetie, Fekadu; Sandvik, Arne Kristian; Bergum, Hallgeir; Nørsett, Kristin; Lægreid, Astrid. (2004) Miniaturized fluorescent RNA dot blot method for rapid quantitation of gene expression. BMC Biotechnology
  Academic article
• 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
  Academic article
• Nørsett, Kristin; Lægreid, Astrid; Midelfart, Herman; Erlandsen, Sten Even; Falkmer, Sture Emil; Grønbech, Jon Erik; Waldum, Helge; Komorowski, Jan; Sandvik, Arne Kristian. (2004) Gene expression based classification of gastric carcinoma. Cancer Letters
  Academic article
• Yadetie, Fekadu; Sandvik, Arne Kristian; Bergum, Hallgeir; Nørsett, Kristin; Lægreid, Astrid. (2004) Miniaturized fluorescent RNA dot blot method for rapid quantitation of gene expression. BMC Biotechnology
  Academic article
• 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
  Academic article
• Yadetie, Fekadu; Sandvik, Arne Kristian; Bergum, Hallgeir; Nørsett, Kristin; Lægreid, Astrid. (2004) Miniaturized fluorescent RNA dot blot method for rapid quantitation of gene expression. BMC Biotechnology
  Academic article

2003

• Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge; Sandvik, Arne Kristian. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-alpha agonist ciprofibrate. Physiological Genomics
  Academic article
• Lægreid, Astrid; Hvidsten, TR; Midelfart, H; Komorowski, Jan; Sandvik, Arne Kristian. (2003) Predicting Gene Ontology Biological Prosess From Temporal Gene Expression Patterns. Genome Research
  Academic article
• Yadetie, Fekadu; Lægreid, Astrid; Bakke, I; Kusnierczyk, W; Komorowski, Jan; Waldum, Helge; Sandvik, Arne Kristian. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor alpha agonist ciprofibrate. Physiological Genomics
  Academic article
• Beisvåg, Vidar; Falck, G.; Loenneche, Jan P.; Qvigstad, G; Jynge, Per; Skomedal, T.; Sandvik, Arne Kristian; Ellingsen, Øyvind. (2003) Identification and regulation of the gastric H+/K+ATPase in the rat heart. Acta Physiologica Scandinavica
  Academic article
• Beisvåg, Vidar; Falck, G; Loennechen, Jan P.; Qvigstad, Gunnar; Jynge, Per; Skomedal, Tor; Osnes, Jan-Bjørn; Sandvik, Arne K; Ellingsen, Øyvind. (2003) Identification and regulation of the gastric H+/K+-ATPase in the rat heart. Acta Physiologica Scandinavica
  Academic article
• Martinsen, Tom Christian; Kawase, Shiro; Håkanson, Rolf; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G; Sandvik, Arne Kristian; Waldum, Helge. (2003) Spontaneous ECL cell carcinomas in cotton rats: natural course and prevention by a gastrin receptor antagonist. Carcinogenesis
  Academic article
• Loenneche, Jan P.; Nilsen, Odd Georg; Arbo, Ingerid; Aadahl, Petter; Nilsen, Turid; Waldum, Helge; Sandvik, Arne Kristian; Ellingsen, Øyvind. (2003) Chronic Exposure to Carbon Monoxide and Nicotine: Endothelin ETA Receptor Antagonism Attenuates Carbon Monoxide-Induced Myocardial Hypertrophy in Rat. Toxicology and Applied Pharmacology
  Academic article
• Yadetie, Fekadu; Lægreid, Astrid; Bakke, Ingunn; Kusnierczyk, Waclaw; Komorowski, Jan; Waldum, Helge; Sandvik, Arne Kristian. (2003) Liver gene expression in rats in response to the peroxisome proliferator-activated receptor-{alpha} agonist ciprofibrate. Physiological Genomics
  Academic article
• Nørsett, Kristin; Lægreid, Astrid; Midelfart, H; Yadetie, Fekadu; Erlandsen, S.E.; Falkmer, Sture Emil; Grønbech, Jon Erik; Waldum, Helge; Komorowski, Jan; Sandvik, Arne Kristian. (2003) Gene expression based classification of gastric carcinoma. Cancer Letters
  Academic article
• Martinsen, Tom Christian; Kawase, Shiro; Håkanson, R; Torp, Sverre Helge; Fossmark, Reidar; Qvigstad, G; Sandvik, Arne Kristian; Waldum, Helge. (2003) SpontaneousECL cell carcinomas in cotton rats. Natural course and the effect of a gastrin receptor antagonist. Carcinogenesis
  Academic article
• 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
  Academic article

2002

• Hofsli, Eva; Nørsett, Kristin; Sandvik, Arne Kristian; Lægreid, Astrid. (2002) Expression of chromogranin A and somatostatin receptors in pancreatic AR42J cells. Molecular and Cellular Endocrinology
  Academic article
• Midelfart, Herman; Komorowski, Jan; Nørsett, Kristin; Yadetie, Fekadu; Sandvik, Arne Kristian; Lægreid, Astrid. (2002) Rough set classifiers from gene expressions and clinical data. Fundamenta Informaticae
  Academic article
• 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
  Academic article
• Midelfart, Herman; Komorowski, Jan; Nørsett, Kristin; Yadetie, Fekadu; Sandvik, Arne Kristian; Lægreid, Astrid. (2002) Learning Rough Set Classifiers from Gene Expressions and Clinical Data. Fundamenta Informaticae
  Academic article
• 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
  Academic article
• Bakke, Ingunn; Hammer, Tommy Arild; Sandvik, Arne Kristian; Waldum, Helge. (2002) PPAR alpha stimulates the rat gastrin-producing cell. Molecular and Cellular Endocrinology
  Academic article
• 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
  Academic article
• Waldum, Helge; Kleveland, Per Martin; Sandvik, Arne Kristian; Brenna, Eiliv; Syversen, Unni; Bakke, Ingunn; Tømmerås, Karin. (2002) The cellular localization of the cholecystokinin 2 (gastrin) receptor in the stomach. Pharmacology and Toxicology
  Academic article
• 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
  Academic article
• 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
  Academic article

2001

• Sandvik, Arne K.; Støren, Ole; Nørsett, Kristin; Børresen-Dale, Anne-Lise; Lægreid, Astrid; Myklebost, Ola. (2001) Måling av genaktivitet med DNA mikromatriser (mikroarray). Molekylære og teknologiske prinsipper. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Rydning, Astrid; Lyng, Oddveig; Adamsen, BL; Falkmer, Sture Emil; Sandvik, Arne Kristian. (2001) Mast cells are involved in the gastric hyperemic response to acid back-diffusion via release of histamine. American Journal of Physiology - Gastrointestinal and Liver Physiology
  Academic article
• Lægreid, A.; Komorowski, J.; Sandvik, Arne K.; Hovig, Eivind; Forus, Anne; Smith-Sørensen, Birgitte; Beisvag, Vidar; Kristiansen, B.; Nørsett, K.; Nygaard, Vegard. (2001) DNA mikroarray- vindu mot tusentals gen. NBS-nytt
  Academic article
• Komorowski, J.; Hvidstaen, T.R.; Jenssen, Tor-Kristian; Tjedvoll, D.; Hovig, Eivind; Lægreid, A.; Sandvik, Arne K.. (2001) Mot kunnskapsoppdagelse fra DNA mikromatise uttrykksdata. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Sandvik, Arne K.; Støren, O.; Nørsett, K.; Børresen-Dale, Anne-Lise; Lægreid, A.; Myklebost, Ola. (2001) Måling av genaktivitet med DNA mikromatriser (mikroarray). Molekylære og teknologiske prinsipper. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Sandvik, Arne Kristian; Støren, O; Nørsett, Kristin; Børresen-Dale, AL; Lægreid, Astrid; Myklebost, O. (2001) Måling av genaktivitet med DNA mikromatriser (microarray). Molekylære og teknologiske prinsipper. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• delaCour, D Dornonville; Björkqvist, Maria; Sandvik, Arne Kristian; Håkanson, Rolf; Chen, D. (2001) A-like cells in the rat stomach contain ghrelin and do not operate under gastrin control. Regulatory Peptides
  Academic article
• 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
  Academic article
• Komorowski, Jan; Hvidsten, TR; Jenssen, T-K; Hovig, E; Lægreid, Astrid; Sandvik, Arne Kristian. (2001) Mot kunnskapsoppdagelse fra DNA mikromatrise (microarray) genuttrykksdata. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• 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
  Academic article
• Torp, SH; Qvigstad, G; Brenna, E; Sandvik, Arne Kristian. (2001) Effects of the peroxisomeproliferator ciprofibrate and the somatostatin analogue octreotide alone or in combination on the rat liver. Recent Advances and Research Updates
  Academic article
• Hvidsten, TR; Komorowski, Jan; Sandvik, Arne Kristian; Lægreid, Astrid. (2001) Predicting gene function for gene expressions and ontologies. Proceedings Pacific Symposium on Biocomputing
  Academic article
• Rydning, Astrid; Lyng, Oddveig; Adamsen, BL; Falkmer, Sture Emil; Sandvik, Arne Kristian. (2001) Mast cells are involved in the gastric hyperemic response to acid back-diffusion via relase of histamine in the rat. American Journal of Physiology
  Academic article
• 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
  Academic article
• 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
  Academic article
• 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
  Academic article

2000

• Lægreid, Astrid; Komorowski, Jan; Sandvik, Arne Kristian; Hovig, Eivind; Forus, Anne; Smith-Sørensen, Birgitte; Beisvåg, Vidar; Kristiansen, Bjørn; Nørsett, Kristin; Nygaard, Vigdis. (2000) DNA mikroarray - vindu mot tusentals gen. NBS-nytt
  Academic article
• Rydning, A; Lyng, Oddveig; Adamsen, BL; Falkmer, Sture Emil; Sandvik, AK; Grønbech, JE. (2000) Mast cells are involved in the gastric hyperemic response to acid back-diffusion via release of histamine. Gastroenterology
  Academic article
• Sandvik, Arne K.; Støren, O.; Nørsett, K.; Børresen-Dale, Anne-Lise; Lægreid, A.; Myklebost, Ola. (2000) DNA Mikroarray- molekylære og teknologiske prinsipper. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• 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
  Academic article
• 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
  Academic article
• Thommesen, Liv; Nørsett, Kristin; Hofsli, Eva; Sandvik, AK; Lægreid, Astrid. (2000) Regulation of inducible cAMP early repressor expression by gastrin and cholecystokinin in the pancreatic cell line AR42J. Journal of Biological Chemistry
  Academic article
• 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
  Academic article
• 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
  Academic article
• Bakke, Ingunn; Sandvik, AK; Waldum, Helge. (2000) Octreotide inhibits the enterochromaffin-like cell, but not peroxisome proliferator-induced hypergastrinemia. Journal of Molecular Endocrinology
  Academic article
• 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
  Academic article
• 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
  Academic article
• 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
  Academic article
• Rydning, Astrid; Adamsen, Birgitte Lid; Lyng, Oddveig; Falkmer, Sture Emil; Sandvik, Arne Kristian; Grønbech, Jon Erik. (2000) Mast cells are involved in the gastric hyperemic response to acid back-diffusion via release of histamine. Gastroenterology
  Academic article
• Rydning, Astrid; Adamsen, Birgitte Lid; Lyng, Oddveig; Falkmer, Sture Emil; Sandvik, Arne Kristian; Grønbech, Jon Erik. (2000) Histamine derived from mast cells is involved in the gastric hyperemic response to acid back-diffusion in the rat stomach. European Surgical Research
  Academic article

1999

• 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
  Academic article
• 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
  Academic article
• Sandvik, AK. (1999) Luft i mage-tarmsystemet. Therapia medica
  Popular science article
• 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
  Academic article
• 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
  Academic article
• Loenneche, Jan P.; Beisvåg, Vidar; Arbo, Ingerid; Waldum, Helge; Sandvik, AK; Knardahl, Stein; Ellingsen, Øyvind. (1999) Chronic carbon monoxide exposure in vivo induces myocardial endothelin-1 expression and hypertrophy in rat. Pharmacology and Toxicology
  Academic article
• Loennechen, Jan P.; Beisvag, Vidar; Arbo, Ingerid; Waldum, Helge L.; Sandvik, Arne K.; Knardahl, Stein; Ellingsen, Øyvind. (1999) Chronic monoxide exposure in vivo induces myocardial endothelin-1 expression and hyperthrophy in rat. Pharmacology and Toxicology
  Academic article
• 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
  Academic article
• 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
  Academic article
• Sandvik, AK; Dockray, Graham J. (1999) Biological activity of carboxy-terminal gastrin analogs. European Journal of Pharmacology
  Academic article
• Waldum, Helge; Sandvik, AK; Angelsen, Anders; Krokan, Hans Einar. (1999) The origin of gut and pancreatic neuroendocrine cells - the last word?. Journal of Pathology
  Academic article
• Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Risikoen ved uttalt syrehemming. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1999) Relationship of ECL cells and gastric neoplasia. The Yale Journal of Biology and Medicine
  Academic article

1998

• 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
  Academic article
• 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
  Academic article
• 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
  Academic article
• 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
  Academic article
• Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1998) Hormones and carcinogenesis. Endocrine-Related Cancer
  Academic article
• Waldum, Helge; Brenna, Eiliv; Sandvik, AK. (1998) Maximal gastric acid secretion in man :a concept that needs precision. Scandinavian Journal of Gastroenterology
  Academic article
• Waldum, Helge; Aase, Steinar; Kvetnoi, Igor; Brenna, Eiliv; Sandvik, AK; Syversen, Unni; Johnsen, Gjermund; Vatten, Lars Johan; Polak, Julia M.. (1998) Neuroendocrine differentiation in human gastric carcinoma. Cancer
  Academic article

1997

• Angelsen, Anders; Mecsei, Reidun; Sandvik, AK; Waldum, Helge. (1997) Neuroendocrine cells in the prostate of the rat, guinea pig, cat, and dog. The Prostate
  Academic article
• Kvetnoy, I.; Sandvik, AK; Waldum, Helge. (1997) The diffuse neuroendocrine system and extrapineal melatonin. Journal of Molecular Endocrinology
  Academic article
• Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Gastrin stimulates histamine release from the isolated pig stomach. Scandinavian Journal of Gastroenterology
  Academic article
• 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
  Academic article
• 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
  Academic article
• Kvetnoy, Igor M.; Yuzhakov, Vadim V.; Sandvik, AK; Waldum, Helge. (1997) Melatonin in mast cells and tumor radiosensitivity. Journal of Pineal Research
  Academic article
• Sandvik, AK; Brenna, Eiliv; Waldum, Helge. (1997) Review article: The pharmacological inhibition of gastric acid secretion : tolerance and rebound. Alimentary Pharmacology and Therapeutics
  Academic article
• Dimaline, Rod; Campbell, Barry J.; Watson, Fiona; Sandvik, AK; Struthers, John; Noble, P.-J.. (1997) Regulated expression of GATA-6 transcription factor in gastric endocrine cells. Gastroenterology
  Academic article

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
  Academic article
• Sandvik, AK; Aase, Steinar; Kveberg, K.H.; Dalen, Are; Folvik, M.; Næss, O.. (1996) Papillomatosis of the esophagus. Journal of Clinical Gastroenterology
  Academic article
• Waldum, Helge; Syversen, Unni; Sandvik, AK. (1996) Karosinoider. Sandoz informasjon
  Academic article
• Syversen, Unni; Opsjøn, Sissel L.; Stridsberg, Mats; Sandvik, Arne Kristian; Dimaline, Rod; Tingulstad, Solveig; Arntzen, Knut J.; Brenna, Eiliv; Waldum, Helge. (1996) Chromogranin A and pancreastatin-like immunoreactivity in normal pregnancies. Journal of Clinical Endocrinology and Metabolism (JCEM)
  Academic article
• Waldum, Helge; Arnestad, J.S.; Brenna, Eiliv; Syversen, Unni; Sandvik, AK. (1996) Marked increase in gastric acid secretory capacity after omeprazole treatment. Gut
  Academic article
• 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
  Academic article
• Waldum, Helge; Nilsen, Odd Georg; Nilsen, Turid; Rørvik, Hege; Syversen, Unni; Sandvik, AK; Haugen, Olav Anton; Torp, Sverre Helge; Brenna, Eiliv. (1996) Long-term effects of inhaled nicotine. Life Sciences
  Academic article

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
  Academic article
• Waldum, Helge; Brenna, Eiliv; Sandvik, AK; Syversen, Unni. (1988) Hormones and carcinogenesis. Endocrine-Related Cancer
  Academic article