Works by Fossmark, Reidar

Results: 68

Symptomatic Primary (AL) Amyloidosis of the Stomach and Duodenum.

Published in:

Case Reports in Gastrointestinal Medicine, 2013, p. 1, doi. 10.1155/2013/525439

By:

Fossmark, Reidar;
Skarsvåg, Espen;
Aarset, Harald;
Hjorth-Hansen, Henrik;
Waldum, Helge L.

Publication type:

Article

Epstein–Barr Virus and Clinico-Endoscopic Characteristics of Gastric Remnant Cancers Compared to Proximal Non-Remnant Cancers: A Population-Based Study.

Published in:

Cancers, 2024, v. 16, n. 11, p. 2000, doi. 10.3390/cancers16112000

By:

Bringeland, Erling A.;
Våge, Christina;
Ubøe, Ann A. S.;
Sandø, Alina D.;
Mjønes, Patricia;
Fossmark, Reidar

Publication type:

Article

Early Gastric Cancers in Central Norway 2001 to 2016—A Population-Based Study.

Published in:

Cancers, 2024, v. 16, n. 6, p. 1222, doi. 10.3390/cancers16061222

By:

Kvamme, Camilla J.;
Stillingen, Thomas L.;
Sandø, Alina D.;
Mjønes, Patricia;
Bringeland, Erling A.;
Fossmark, Reidar

Publication type:

Article

Survival Trends in Patients with Small Intestinal Neuroendocrine Tumours—A Cohort Study in Central Norway.

Published in:

Cancers, 2023, v. 15, n. 13, p. 3272, doi. 10.3390/cancers15133272

By:

Folkestad, Oddry;
Hauso, Øyvind;
Mjønes, Patricia;
Fougner, Reidun;
Wasmuth, Hans H.;
Fossmark, Reidar

Publication type:

Article

Gastric Cancers Missed at Upper Endoscopy in Central Norway 2007 to 2016—A Population-Based Study.

Published in:

Cancers, 2021, v. 13, n. 22, p. 5628, doi. 10.3390/cancers13225628

By:

Beck, Marianne;
Bringeland, Erling A.;
Qvigstad, Gunnar;
Fossmark, Reidar

Publication type:

Article

Survival and Disease Recurrence in Patients with Duodenal Neuroendocrine Tumours—A Single Centre Cohort.

Published in:

Cancers, 2021, v. 13, n. 16, p. 3985, doi. 10.3390/cancers13163985

By:

Folkestad, Oddry;
Wasmuth, Hans H.;
Mjønes, Patricia;
Fougner, Reidun;
Hauso, Øyvind;
Fossmark, Reidar

Publication type:

Article

Skeletal Effects of the Saturated 3-Thia Fatty Acid Tetradecylthioacetic Acid in Rats.

Published in:

PPAR Research, 2011, p. 1, doi. 10.1155/2011/436358

By:

Stunes, Astrid Kamilla;
Westbroek, Irene;
Fossmark, Reidar;
Berge, Rolf Kristian;
Reseland, Janne Elin;
Syversen, Unni

Publication type:

Article

Do Gastric Signet Ring Cell Carcinomas and ECL-Cell Neuroendocrine Tumours Have a Common Origin?

Published in:

2022

By:

Fossmark, Reidar;
Johannessen, Rune;
Qvigstad, Gunnar;
Mjønes, Patricia

Publication type:

Case Study

Ultrastructure and chromogranin A immunogold labelling of ECL cell carcinoids.

Published in:

APMIS, 2005, v. 113, n. 7/8, p. 506, doi. 10.1111/j.1600-0463.2005.apm_147.x

By:

Fossmark, Reidar;
Martinsen, Tom C.;
Qvigstad, Gunnar;
Bendheim, Marianne Ø;
Kopstad, Gunnar;
Kashima, Kenji;
Waldum, Helge L.

Publication type:

Article

Dedifferentiation of enterochromaffin-like cells in gastric cancer of hypergastrinemic cotton rats.

Published in:

APMIS, 2005, v. 113, n. 6, p. 436, doi. 10.1111/j.1600-0463.2005.apm_134.x

By:

Fossmark, Reidar;
Chun-Mei Zhao;
Martinsen, Tom C.;
Kawasw, Shiro;
Duan Chen;
Waldum, Helge L.

Publication type:

Article

Eradication of Helicobacter pylori by a potassium-competitive acid blocker alone?

Published in:

Scandinavian Journal of Gastroenterology, 2025, v. 60, n. 1, p. 10, doi. 10.1080/00365521.2024.2444477

By:

Waldum, Helge;
Fossmark, Reidar

Publication type:

Article

The impact of proton pump inhibitors on the course of ulcerative colitis: a cohort study of over 10,000 newly diagnosed patients in Norway.

Published in:

Scandinavian Journal of Gastroenterology, 2024, v. 59, n. 1, p. 46, doi. 10.1080/00365521.2023.2255710

By:

Fossmark, Reidar;
Lirhus, Sandre Svatun;
Høivik, Marte Lie

Publication type:

Article

Hypergastrinemia and mortality in gastric adenocarcinoma: a population-based cohort study, the HUNT study.

Published in:

Scandinavian Journal of Gastroenterology, 2022, v. 57, n. 5, p. 558, doi. 10.1080/00365521.2022.2026462

By:

Ness-Jensen, Eivind;
Bringeland, Erling Audun;
Mjønes, Patricia;
Lagergren, Jesper;
Grønbech, Jon Erik;
Waldum, Helge;
Fossmark, Reidar

Publication type:

Article

Hepatic micrometastases outside macrometastases are present in all patients with ileal neuroendocrine primary tumour at the time of liver resection.

Published in:

Scandinavian Journal of Gastroenterology, 2019, v. 54, n. 8, p. 1003, doi. 10.1080/00365521.2019.1647281

By:

Fossmark, Reidar;
Balto, Tine M.;
Martinsen, Tom C.;
Grønbech, Jon E.;
Munkvold, Bjørn;
Mjønes, Patricia G.;
Waldum, Helge L.

Publication type:

Article

Proton pump inhibitors (PPIs) may cause gastric cancer - clinical consequences.

Published in:

Scandinavian Journal of Gastroenterology, 2018, v. 53, n. 6, p. 639, doi. 10.1080/00365521.2018.1450442

By:

Waldum, Helge L.;
Sørdal, Øystein;
Fossmark, Reidar

Publication type:

Article

Follow-up of patients with ECL cell-derived tumours.

Published in:

Scandinavian Journal of Gastroenterology, 2016, v. 51, n. 11, p. 1398, doi. 10.3109/00365521.2016.1169588

By:

Sagatun, Liv;
Fossmark, Reidar;
Jianu, Constantin S.;
Qvigstad, Gunnar;
Nordrum, Ivar S.;
Mjønes, Patricia;
Waldum, Helge L.

Publication type:

Article

Does long-term profound inhibition of gastric acid secretion increase the risk of ECL cell-derived tumors in man?

Published in:

Scandinavian Journal of Gastroenterology, 2016, v. 51, n. 7, p. 767, doi. 10.3109/00365521.2016.1143527

By:

Waldum, Helge L.;
Hauso, Øyvind;
Brenna, Eiliv;
Qvigstad, Gunnar;
Fossmark, Reidar

Publication type:

Article

Impaired skeletal health in patients with chronic atrophic gastritis.

Published in:

Scandinavian Journal of Gastroenterology, 2016, v. 51, n. 7, p. 774, doi. 10.3109/00365521.2016.1141317

By:

Aasarød, Kristin Matre;
Mosti, Mats Peder;
Stunes, Astrid Kamilla;
Reseland, Janne Elin;
Basso, Trude;
Syversen, Unni;
Fossmark, Reidar

Publication type:

Article

Upper gastrointestinal physiology and diseases.

Published in:

Scandinavian Journal of Gastroenterology, 2015, v. 50, n. 6, p. 649, doi. 10.3109/00365521.2015.1009157

By:

Waldum, Helge L;
Kleveland, Per M;
Fossmark, Reidar

Publication type:

Article

Fecal calprotectin in patients with suspected small bowel disease - a selection tool for small bowel capsule endoscopy?

Published in:

Scandinavian Journal of Gastroenterology, 2015, v. 50, n. 3, p. 272, doi. 10.3109/00365521.2014.1003395

By:

Olsen, Paul A. S.;
Fossmark, Reidar;
Qvigstad, Gunnar

Publication type:

Article

The gastric mucosa 25 years after proximal gastric vagotomy.

Published in:

Scandinavian Journal of Gastroenterology, 2014, v. 49, n. 10, p. 1173, doi. 10.3109/00365521.2014.950979

By:

Sagatun, Liv;
Jianu, Constantin S;
Fossmark, Reidar;
Mårvik, Ronald;
Nordrum, Ivar S;
Waldum, Helge L

Publication type:

Article

Cytomegalovirus infection and postoperative complications in patients with ulcerative colitis undergoing colectomy.

Published in:

Scandinavian Journal of Gastroenterology, 2014, v. 49, n. 7, p. 845, doi. 10.3109/00365521.2014.929172

By:

Olaisen, Maya;
Rydning, Astrid;
Martinsen, Tom Christian;
Nordrum, Ivar Skjåk;
Mjønes, Patricia;
Fossmark, Reidar

Publication type:

Article

Clinical experience with infliximab and adalimumab in a single-center cohort of patients with Crohn's disease.

Published in:

Scandinavian Journal of Gastroenterology, 2012, v. 47, n. 6, p. 649, doi. 10.3109/00365521.2012.672591

By:

Riis, Åse;
Martinsen, Tom C.;
Waldum, Helge L.;
Fossmark, Reidar

Publication type:

Article

Gastric neuroendocrine carcinoma after long-term use of proton pump inhibitor.

Published in:

Scandinavian Journal of Gastroenterology, 2012, v. 47, n. 1, p. 64, doi. 10.3109/00365521.2011.627444

By:

Jianu, Constantin S;
Lange, Ove J;
Viset, Trond;
Qvigstad, Gunnar;
Martinsen, Tom C;
Fougner, Reidun;
Kleveland, Per M;
Fossmark, Reidar;
Hauso, Øyvind;
Waldum, Helge L

Publication type:

Article

Parietal cell activation by arborization of ECL cell cytoplasmic projections is likely the mechanism for histamine induced secretion of hydrochloric acid.

Published in:

Scandinavian Journal of Gastroenterology, 2011, v. 46, n. 5, p. 531, doi. 10.3109/00365521.2011.558113

By:

Gustafsson, Björn I.;
Bakke, Ingunn;
Hauso, Øyvind;
Kidd, Mark;
Modlin, Irvin M.;
Fossmark, Reidar;
Brenna, Eiliv;
Waldum, Helge L.

Publication type:

Article

Five-year follow-up of patients treated for 1 year with octreotide long-acting release for enterochromaffin-like cell carcinoids.

Published in:

Scandinavian Journal of Gastroenterology, 2011, v. 46, n. 4, p. 456, doi. 10.3109/00365521.2010.539255

By:

Jianu, Constantin S.;
Fossmark, Reidar;
Syversen, Unni;
Hauso, Øyvind;
Fykse, Vidar;
Waldum, Helge L.

Publication type:

Article

Long-term gastric changes in achlorhydric H+/K+-ATPase beta subunit deficient mice.

Published in:

Scandinavian Journal of Gastroenterology, 2010, v. 45, n. 9, p. 1042, doi. 10.3109/00365521.2010.490952

By:

Bakkelund, Karin E.;
Waldum, Helge L.;
Nordrum, Ivar Skjåk;
Hauso, Øyvind;
Fossmark, Reidar

Publication type:

Article

Rebound acid hypersecretion from a physiological, pathophysiological and clinical viewpoint.

Published in:

Scandinavian Journal of Gastroenterology, 2010, v. 45, n. 4, p. 389, doi. 10.3109/00365520903477348

By:

Waldum, Helge L.;
Qvigstad, Gunnar;
Fossmark, Reidar;
Kleveland, Per M.;
Sandvik, Arne K.

Publication type:

Article

Interactions between gastric acid secretagogues and the localization of the gastrin receptor.

Published in:

Scandinavian Journal of Gastroenterology, 2009, v. 44, n. 4, p. 390, doi. 10.1080/00365520802624219

By:

Waldum, Helge L.;
Kleveland, Per M.;
Brenna, Eiliv;
Bakke, Ingunn;
Qvigstad, Gunnar;
Martinsen, Tom Chr.;
Fossmark, Reidar;
Gustafsson, Bjørn I.;
Sandvik, Arne K.

Publication type:

Article

Effect of antrectomy in hypergastrinaemic female Japanese cotton rats.

Published in:

Scandinavian Journal of Gastroenterology, 2009, v. 44, n. 1, p. 32, doi. 10.1080/00365520802308011

By:

Bakkelund, Karin;
Fossmark, Reidar;
Nordrum, Ivar S.;
Waldum, Helge L.

Publication type:

Article

Serum gastrin and chromogranin A levels in patients with fundic gland polyps caused by long-term proton-pump inhibition.

Published in:

Scandinavian Journal of Gastroenterology, 2008, v. 43, n. 1, p. 20, doi. 10.1080/00365520701561959

By:

Fossmark, Reidar;
Jianu, Constantin S;
Martinsen, Tom C.;
Qvigstad, Gunnar;
Syversen, Unni;
Waldum, Helge L.

Publication type:

Article

pH 4.0.

Published in:

Scandinavian Journal of Gastroenterology, 2007, v. 42, n. 3, p. 297, doi. 10.1080/00365520600887828

By:

Fossmark, Reidar;
Brenna, Eiliv;
Waldum, Helge L.

Publication type:

Article

Animal Models to Study the Role of Long-Term Hypergastrinemia in Gastric Carcinogenesis.

Published in:

Journal of Biomedicine & Biotechnology, 2011, p. 1, doi. 10.1155/2011/975479

By:

Fossmark, Reidar;
Qvigstad, Gunnar;
Martinsen, Tom Chr.;
Hauso, Øyvind;
Waldum, Helge L.

Publication type:

Article

Hypergastrinemia is associated with an increased risk of gastric adenocarcinoma with proximal location: A prospective population‐based nested case‐control study.

Published in:

International Journal of Cancer, 2021, v. 148, n. 8, p. 1879, doi. 10.1002/ijc.33354

By:

Ness‐Jensen, Eivind;
Bringeland, Erling Audun;
Mattsson, Fredrik;
Mjønes, Patricia;
Lagergren, Jesper;
Grønbech, Jon Erik;
Waldum, Helge Lyder;
Fossmark, Reidar

Publication type:

Article

ECL-cell carcinoids and carcinoma in patients homozygous for an inactivating mutation in the gastric H+K+ATPase alpha subunit.

Published in:

APMIS, 2016, v. 124, n. 7, p. 561, doi. 10.1111/apm.12546

By:

Fossmark, Reidar;
Calvete, Oriol;
Mjønes, Patricia;
Benitez, Javier;
Waldum, Helge L.

Publication type:

Article

Hypergastrinemia is associated with adenocarcinomas in the gastric corpus and shorter patient survival.

Published in:

APMIS, 2015, v. 123, n. 6, p. 509, doi. 10.1111/apm.12380

By:

Fossmark, Reidar;
Sagatun, Liv;
Nordrum, Ivar S.;
Sandvik, Arne K.;
Waldum, Helge L

Publication type:

Article

To the Editor.

Published in:

JAMA Internal Medicine, 2016, v. 176, n. 6, p. 868

By:

Ness-Jensen, Eivind;
Fossmark, Reidar

Publication type:

Article

Adverse Effects of Proton Pump Inhibitors in Chronic Kidney Disease.

Published in:

2016

By:

Ness-Jensen, Eivind;
Fossmark, Reidar

Publication type:

Letter

The cytoprotective protein clusterin is overexpressed in hypergastrinemic rodent models of oxyntic preneoplasia and promotes gastric cancer cell survival.

Published in:

PLoS ONE, 2017, v. 12, n. 9, p. 1, doi. 10.1371/journal.pone.0184514

By:

Vange, Pål;
Bruland, Torunn;
Doseth, Berit;
Fossmark, Reidar;
Sousa, Mirta M. L.;
Beisvag, Vidar;
Sørdal, Øystein;
Qvigstad, Gunnar;
Waldum, Helge L.;
Sandvik, Arne K.;
Bakke, Ingunn

Publication type:

Article

Gastrin May Mediate the Carcinogenic Effect of Helicobacter pylori Infection of the Stomach.

Published in:

Digestive Diseases & Sciences, 2015, v. 60, n. 6, p. 1522, doi. 10.1007/s10620-014-3468-9

By:

Waldum, Helge;
Hauso, Øyvind;
Sørdal, Øystein;
Fossmark, Reidar

Publication type:

Article

The Distressing Overuse of Gastric Acid Inhibitors.

Published in:

2013

By:

Fossmark, Reidar;
Waldum, Helge

Publication type:

Editorial

Esophageal cancers missed at upper endoscopy in Central Norway 2004 to 2021 – A population-based study.

Published in:

BMC Gastroenterology, 2024, v. 24, n. 1, p. 1, doi. 10.1186/s12876-024-03371-z

By:

Straum, Synne;
Wollan, Karoline;
Rekstad, Lars Cato;
Fossmark, Reidar

Publication type:

Article

The peroxisome proliferator-activated receptor (PPAR) alpha agonist fenofibrate maintains bone mass, while the PPAR gamma agonist pioglitazone exaggerates bone loss, in ovariectomized rats.

Published in:

BMC Endocrine Disorders, 2011, v. 11, n. 1, p. 11, doi. 10.1186/1472-6823-11-11

By:

Stunes, Astrid K.;
Westbroek, Irene;
Gustafsson, Björn I.;
Fossmark, Reidar;
Waarsing, Jan H.;
Eriksen, Erik F.;
Petzold, Christiane;
Reseland, Janne E.;
Syversen, Unni

Publication type:

Article

Effects of the Histamine 1 Receptor Antagonist Cetirizine on the Osteoporotic Phenotype in H+/K+ATPase Beta Subunit KO Mice.

Published in:

Journal of Cellular Biochemistry, 2016, v. 117, n. 9, p. 2089, doi. 10.1002/jcb.25514

By:

Aasarød, Kristin M.;
Stunes, Astrid K.;
Mosti, Mats P.;
Ramezanzadehkoldeh, Masoud;
Viggaklev, Bjørn I.;
Reseland, Janne E.;
Skallerud, Bjørn H.;
Fossmark, Reidar;
Syversen, Unni

Publication type:

Article

Decreased bone mineral density and reduced bone quality in H+/K+ATPase beta-subunit deficient mice.

Published in:

Journal of Cellular Biochemistry, 2012, v. 113, n. 1, p. 141, doi. 10.1002/jcb.23337

By:

Fossmark, Reidar;
Stunes, Astrid K.;
Petzold, Christiane;
Waldum, Helge L.;
Rubert, Marina;
Lian, Aina-Mari;
Reseland, Janne E.;
Syversen, Unni

Publication type:

Article

Experimental Helicobacter pylori Infection Induces Antral-Predominant, Chronic Active Gastritis in Hispid Cotton Rats ( Sigmodon hispidus).

Published in:

Helicobacter, 2005, v. 10, n. 4, p. 332, doi. 10.1111/j.1523-5378.2005.00320.x

By:

Mähler, Michael;
Heidtmann, Wiebke;
Niewiesk, Stefan;
Gruber, Achim;
Fossmark, Reidar;
Beil, Winfried;
Hedrich, Hans;
Wagner, Siegfried

Publication type:

Article

Netazepide, a gastrin/cholecystokinin-2 receptor antagonist, can eradicate gastric neuroendocrine tumours in patients with autoimmune chronic atrophic gastritis.

Published in:

British Journal of Clinical Pharmacology, 2017, v. 83, n. 3, p. 466, doi. 10.1111/bcp.13146

By:

Boyce, Malcolm;
Moore, Andrew R.;
Sagatun, Liv;
Parsons, Bryony N.;
Varro, Andrea;
Campbell, Fiona;
Fossmark, Reidar;
Waldum, Helge L.;
Pritchard, D. Mark

Publication type:

Article

Factors associated with the persistence of oral 5-aminosalicylic acid monotherapy in ulcerative colitis: a nationwide Norwegian cohort study.

Published in:

Therapeutic Advances in Gastroenterology, 2021, v. 14, p. 1, doi. 10.1177/17562848211021760

By:

Fossmark, Reidar;
Olaisen, Maya;
Martinsen, Tom Christian;
Melberg, Hans Olav

Publication type:

Article

Factors associated with the persistence of oral 5-aminosalicylic acid monotherapy in ulcerative colitis: a nationwide Norwegian cohort study.

Published in:

Therapeutic Advances in Gastroenterology, 2021, v. 14, p. 1, doi. 10.1177/17562848211021760

By:

Fossmark, Reidar;
Olaisen, Maya;
Martinsen, Tom Christian;
Melberg, Hans Olav

Publication type:

Article

Gastric Carcinomas Localized to the Cardia.

Published in:

Gastroenterology Research & Practice, 2012, p. 1, doi. 10.1155/2012/457831

By:

Bakkelund, Karin E.;
Nordrum, Ivar S.;
Fossmark, Reidar;
Waldum, Helge L.

Publication type:

Article