Cristin

2024
1.	Resell, Mathilde Victoria; Stranden, Morten; Qvigstad, Gunnar; Chen, Duan; Zhao, Chun Mei. Gaps between needs of patient and public involvement and interests of researchers on pancreatic cancer. Patient Education and Counseling 2024 ;Volum 120.(108125) s. 1-11 NTNU Untitled
2022
2.	Beck, Marianne; Bringeland, Erling Audun; Qvigstad, Gunnar; Fossmark, Reidar. Ventrikkelcancer oversett ved gastroskopi i Midt-Norge 2007-2016 – En populasjonsbasert studie. NGF-nytt 2022 ;Volum 29.(1) s. 48-50 NTNU Untitled

3.	Fossmark, Reidar; Johannessen, Rune; Qvigstad, Gunnar; Mjønes, Patricia. Do Gastric Signet Ring Cell Carcinomas and ECL-Cell Neuroendocrine Tumours Have a Common Origin?. Medicina 2022 ;Volum 58.(4) s. 1-5 NTNU STO Untitled

4.	Melis, Claudia; Pertoldi, Cino; Ludington, William Basil; Beuchat, Carol; Qvigstad, Gunnar; Stronen, Astrid Vik. Genetic Rescue of the Highly Inbred Norwegian Lundehund. Genes 2022 ;Volum 13.(1) s. 1-12 DMMH STO NTNU Untitled
2021
5.	Beck, Marianne; Bringeland, Erling A.; Qvigstad, Gunnar; Fossmark, Reidar. Gastric cancers missed at upper endoscopy in central norway 2007 to 2016—a population-based study. Cancers 2021 ;Volum 13.(22) s. 1-10 NTNU STO Untitled

6.	Kylänpää, Leena; Koskensalo, Vilja; Saarela, Arto; Ejstrud, Per; Udd, Marianne; Lindström, Outi; Rainio, Mia; Tenca, Andrea; Halttunen, Jorma; Qvigstad, Gunnar; Arnelo, Urban; Fagerström, Niklas; Hauge, Truls; Aabakken, Lars; Grönroos, Juha. Transpancreatic biliary sphincterotomy versus double guidewire in difficult biliary cannulation: A randomized controlled trial. Endoscopy 2021 s. - STO OUS Untitled
2019
7.	Haraldsson, Erik; Kylanpää, Leena; Grönroos, Juha; Saarela, Arto; Toth, Ervin; Qvigstad, Gunnar; Hult, Mari; Lindström, Outi; Laine, Simo; Karjula, Heikki; Hauge, Truls; Sadik, Riadh; Arnelo, Urban. Macroscopic appearance of the major duodenal papilla influences bile duct cannulation: a prospective multicenter study by the Scandinavian Association for Digestive Endoscopy Study Group for ERCP. Gastrointestinal Endoscopy 2019 ;Volum 90.(6) s. 957-963 OUS UiO STO Untitled
2017
8.	Mjønes, Patricia; Nordrum, Ivar Skjåk; Qvigstad, Gunnar; Sørdal, Øystein Finset; Rian, Liselotte Linnea Mårtensson; Waldum, Helge. Expression of erythropoietin and neuroendocrine markers in clear cell renal cell carcinoma. APMIS : Acta pathologica, microbiologica et immunologica Scandinavica. Supplementum 2017 ;Volum 125.(3) s. 213-222 STO NTNU Untitled

9.	Vange, Pål; Bruland, Torunn; Doseth, Berit; Fossmark, Reidar; Sousa, Mirta; Beisvag, Vidar; Sørdal, Øystein Finset; Qvigstad, Gunnar; Waldum, Helge; Sandvik, Arne Kristian; Bakke, Ingunn. The cytoprotective protein clusterin is overexpressed in hypergastrinemic rodent models of oxyntic preneoplasia and promotes gastric cancer cell survival. PLOS ONE 2017 ;Volum 12.(9) STO NTNU Untitled
2016
10.	Sagatun, Liv; Fossmark, Reidar; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Mjønes, Patricia; Waldum, Helge. Follow-up of patients with ECL cell-derived tumours. Scandinavian Journal of Gastroenterology 2016 ;Volum 51.(11) s. 1398-1405 STO NTNU Untitled

11.	Vange, Pål; Bruland, Torunn; Doseth, Berit; Sousa, Mirta; Sørdal, Øystein Finset; Qvigstad, Gunnar; Fossmark, Reidar; Waldum, Helge; Sandvik, Arne Kristian; Bakke, Ingunn. The anti-apoptotic factor clusterin is involved in hypergastrinemia-induced remodeling of the gastric oxyntic mucosa. United European Gastroenterology Week 2016; 2016-10-17 - 2016-10-19 NTNU STO Untitled

12.	Waldum, Helge; Hauso, Øyvind; Brenna, Eiliv; Qvigstad, Gunnar; Fossmark, Reidar. Does long-term profound inhibition of gastric acid secretion increase the risk of ECL cell-derived tumors in man?. Scandinavian Journal of Gastroenterology 2016 ;Volum 51.(7) s. 767-773 STO NTNU Untitled
2015
13.	Olsen, Paul Anders S.; Fossmark, Reidar; Qvigstad, Gunnar. Fecal calprotectin in patients with suspected small bowel disease – a selection tool for small bowel capsule endoscopy?. Scandinavian Journal of Gastroenterology 2015 ;Volum 50.(3) s. 272-277 NTNU STO Untitled

14.	Paul, Olsen; Fossmark, Reidar; Qvigstad, Gunnar. Fekal calprotektin hos pasienter med mistenkt tynntarmsykdom – et seleksjonsverktøy før kapselendoskopi?. Norsk gastroenterologisk forenings årsmøte; 2015-02-05 - 2015-02-07 NTNU STO Untitled
2014
15.	Olsen, Paul A S; Fossmark, Reidar; Qvigstad, Gunnar. Fecal calprotectin in patients with suspected small bowel disease - A selection tool for small bowel capsule endoscopy?. Scandinavian Journal of Gastroenterology 2014 ;Volum 50.(3) s. 272-277 NTNU STO Untitled

16.	Sørdal, Øystein Finset; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Sandvik, Arne Kristian; Gustafsson, Björn; Waldum, Helge. The PAS positive material in gastric cancer cells of signet ring type is not mucin. Experimental and molecular pathology (Print) 2014 ;Volum 96.(3) s. 274-278 NTNU STO Untitled

17.	Vange, Pål; Beisvag, Vidar; Flatberg, Arnar; Afroz, Wahida; Nordrum, Ivar Skjåk; Sørdal, Øystein Finset; Qvigstad, Gunnar; Thommesen, Liv; Lægreid, Astrid; Sandvik, Arne Kristian; Bruland, Torunn; Bakke, Ingunn. Molecular mechanisms of cellular stress responses in gastric cancer. Digestive Disease Week 2014; 2014-05-03 - 2014-05-06 NTNU STO Untitled
2013
18.	Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, Malcolm; Bergh, Kåre; Munkvold, Bjørn; Qvigstad, Gunnar. The Gastrin Receptor Antagonist Netazepide (YF476) Prevents Oxyntic Mucosal Inflammation Induced by Helicobacter Pylori Infection in Mongolian Gerbils. Helicobacter 2013 ;Volum 18.(6) s. 397-405 NTNU STO Untitled

19.	Sørdal, Øystein; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Gustafsson, Björn; Waldum, Helge. In situ hybridization in human and rodent tissue by the use of a new and simplified method. Applied immunohistochemistry & molecular morphology (Print) 2013 ;Volum 21.(2) s. 185-189 STO NTNU Untitled

20.	Waldum, Helge; Qvigstad, Gunnar; Sørdal, Øystein Finset; Bakkelund, Karin Elvenes; Sandvik, Arne Kristian; Vogt, Christina; Nordrum, Ivar Skjåk. Gastriske adenokarsinomer er i realiteten nevroendokrine (ECL celle) deriverte svulster. Årsmøte i Den norske patologforening (DNP); 2013-03-15 - 2013-03-16 NTNU STO Untitled

21.	Waldum, Helge; Sørdal, Øystein Finset; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. Does gastrin mediate the gastric carcinogenic effect of Helicobacter pylori infection?. International Conference on Gastroenterology & Urology; 2013-06-10 - 2013-06-12 NTNU STO Untitled
2012
22.	Erlandsen, Sten Even; Qvigstad, Gunnar; Fossmark, Reidar; Bakke, Ingunn; Chen, Duan; Sandvik, Arne Kristian. Regulated endocrine-specific protein 18 (RESP18) is localized to and regulated in A-like cells and G-cells in rat stomach. Regulatory Peptides 2012 ;Volum 177.(1-3) s. 53-59 NTNU STO Untitled

23.	Fossmark, Reidar; Sørdal, O.J.; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. YF476, a Gastrin Receptor Antagonist, Causes Regression of Tumors and Normalizes Serum Chromogranin A in Patients with Type 1 Gastric Carcinoids. Neuroendocrinology 2012 ;Volum 96. s. 31-31 NTNU STO Untitled

24.	Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. Behandling av ventrikkelcarcinoider type 1 med en gastrinreceptor antagonist (YF476) gir tilbakegang av svulster og normalisering av chromogranin A. Norsk Gastroenterologisk Forenings årsmøte; 2012-02-09 - 2012-02-11 NTNU STO Untitled

25.	Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. 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; 2012-03-07 - 2012-03-09 NTNU STO Untitled

26.	Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Boyce, M; Waldum, Helge. Treatment of Gastric Carcinoids type 1 with the Gastrin Receptor Antagonist YF476 Results in Regression of Tumours and Normalisation of Serum Chromogranin A. Digestive Disease Week, AGA; 2012-05-19 NTNU STO Untitled

27.	Fossmark, Reidar; Sørdal, Øystein Finset; Jianu, Constantin-Sergiu; Qvigstad, Gunnar; Nordrum, Ivar Skjåk; Boyce, M; Waldum, Helge. 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 2012 ;Volum 36.(11-12) s. 1067-1075 NTNU STO Untitled

28.	Jianu, Constantin-Sergiu; Fossmark, Reidar; Viset, Trond; Qvigstad, Gunnar; Sørdal, Øystein Finset; Mårvik, Ronald; Waldum, Helge. Gastric carcinoids after long-term use of a proton pump inhibitor. Alimentary Pharmacology and Therapeutics 2012 ;Volum 36.(7) s. 644-649 STO NTNU Untitled

29.	Jianu, Constantin-Sergiu; Lange, Ove Juel; Viset, Trond; Qvigstad, Gunnar; Martinsen, Tom Christian; Fougner, Reidun Lyngvi; Kleveland, Per Martin; Fossmark, Reidar; Hauso, Øyvind; Waldum, Helge. Gastric neuroendocrine carcinoma after long-term use of proton pump inhibitor. Scandinavian Journal of Gastroenterology 2012 ;Volum 47.(1) s. 64-67 NTNU STO HMR Untitled

30.	Sørdal, Øystein Finset; Waldum, Helge; Nordrum, Ivar Skjåk; Boyce, M; Bergh, Kåre; Qvigstad, Gunnar. The gastrin receptor antagonist YF476 prevents oxyntic mucosal inflammation due to Helicobacter pylori infection in Mongolian gerbils. Regulatory Peptides 2012 ;Volum 177. s. S33-S34 STO NTNU UiO Untitled

31.	Waldum, Helge; Sandvik, Arne Kristian; Hauso, Øyvind; Qvigstad, Gunnar; Fossmark, Reidar. Withdrawing PPI Therapy: Response to Metz et al. American Journal of Gastroenterology 2012 ;Volum 107.(2) s. 325-326 NTNU STO Untitled
2011
32.	Fossmark, Reidar; Qvigstad, Gunnar; Martinsen, Tom Christian; Hauso, Øyvind; Waldum, Helge. Animal models to study the role of long-term hypergastrinemia in gastric carcinogenesis. Journal of Biomedicine and Biotechnology 2011 ;Volum 2011.(ID 975479) s. - NTNU STO Untitled

33.	Qvigstad, Gunnar; Viset, Trond; Fougner, Reidun Lyngvi. Eosinofil gastroenteritt. Tidsskrift for Den norske legeforening 2011 s. 353-356 STO Untitled
2010
34.	Hauso, Øyvind; Gustafsson, Björn; Qvigstad, Gunnar; Constantin, Jianu; Nordrum, Ivar Skjåk; Waldum, Helge. Fibroserende duodenitt: En ny sykdom?. Årsmøte 2010, Norsk gastroenterologisk forening (NGF); 2010-02-12 - 2010-02-13 NTNU STO Untitled

35.	Waldum, Helge; Martinsen, Tom Christian; Hauso, Øyvind; Qvigstad, Gunnar. Oral proton-pump inhibitors and step-down therapy for nonulcer dyspepsia: is this the right approach?. Therapeutic Advances in Gastroenterology 2010 ;Volum 3.(2) s. 73-76 NTNU STO Untitled

36.	Waldum, Helge; Qvigstad, Gunnar; Fossmark, Reidar; Kleveland, Per Martin; Sandvik, Arne Kristian. Rebound acid hypersecretion from a physiological, pathophysiological and clinical viewpoint. Scandinavian Journal of Gastroenterology 2010 ;Volum 45.(4) s. 389-394 NTNU STO Untitled
2009
37.	Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian; Fossmark, Reidar; Gustafsson, Björn; Sandvik, Arne Kristian. Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology 2009 ;Volum 44.(4) s. 390-393 NTNU STO Untitled
2008
38.	Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni. Fundic gland polyps induced by proton pump inhibition are not relates to hypergastrinemia and serum chromogranin. Scandinavian Journal of Gastroenterology 2008 ;Volum 43. s. 20-24 NTNU STO Untitled

39.	Fossmark, Reidar; Jianu, CS; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton-pump inhibition. Scandinavian Journal of Gastroenterology 2008 ;Volum 43.(1) s. 20-24 NTNU STO Untitled

40.	Fossmark, Reidar; Qvigstad, Gunnar; Waldum, Helge. Gastric cancer: Animal studies on the risk of hypoacidity and hypergastrinemia. World Journal of Gastroenterology (WJG) 2008 ;Volum 14. s. 1646-1651 NTNU STO Untitled

41.	Qvigstad, Gunnar; Kolbjørnsen, Øyvor; Skancke, Ellen Margrete; Waldum, Helge. Gastric Neuroendocrine Carcinoma Associated with Atrophic Gastritis in the Norwegian Lundehund. Journal of Comparative Pathology 2008 ;Volum 139.(4) s. 194-201 NMBU VETINST NTNU Untitled

42.	Waldum, Helge; Kleveland, Per Martin; Brenna, Eiliv; Bakke, Ingunn; Qvigstad, Gunnar; Martinsen, Tom Christian; Fossmark, Reidar; Gustafsson, Bjorn; Sandvik, Arne Kristian. Interactions between gastric acid secretagogues and the localization of the gastrin receptor. Scandinavian Journal of Gastroenterology 2008 s. 1-4 NTNU STO Untitled

43.	Waldum, Helge; Qvigstad, G; Martinsen, TC; Fossmark, R. Controversies in the management of gastro-oesophageal diseases. Are all the gastric polyps 'bad'?. Scandinavian Journal of Gastroenterology 2008 ;Volum 43. s. 21-21 NTNU Untitled

44.	Waldum, Helge; Sandvik, Arne Kristian; Brenna, Eiliv; Fossmark, Reidar; Qvigstad, Gunnar; soga, j. Classification of tumours. Journal of Experimental and Clinical Cancer Research 2008 ;Volum 27.(1) s. 70- NTNU STO Untitled
2007
45.	Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. 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 2007 ;Volum 132.(4) Suppl. 2 s. M1886- NTNU Untitled

46.	Fossmark, Reidar; Jianu, Constantin; Martinsen, Tom Christian; Qvigstad, Gunnar; Syversen, Unni; Waldum, Helge. Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton pump inhibition. Scandinavian Journal of Gastroenterology 2007 ;Volum 43.(1) s. 20-24 NTNU STO Untitled

47.	Waldum, Helge; Qvigstad, Gunnar. Gastric neuroendocrine carcinomas associated with atrophic gastritis in the Norwegian lundehund (puffin dog). Carcinogenesis 2007 NTNU Untitled

48.	Waldum, Helge; Qvigstad, Gunnar. Proton pump inhibitors and gastric neoplasia. Gut 2007 ;Volum 56.(7) s. 1019-1020 NTNU STO Untitled
2006
49.	Jianu, Constantin; Qvigstad, Gunnar; Waldum, Helge. Synergistic adenocarcinoma and carcinoid. Journal of Gastrointestinal and Liver Diseases 2006 ;Volum 15. s. 2002-2002 NTNU STO Untitled

50.	Linder, S; Myrvold, K; Falkmer, Ursula; Qvigstad, Gunnar; Waldum, Helge; Falkmer, Sture Emil. Neuroendocrine cells in pancreatic duct adenocarcinoma: an immunohistochemical study. Journal of Experimental and Clinical Cancer Research 2006 ;Volum 25. s. 213-221 NTNU STO Untitled

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