Works by Waldum, Helge

Results: 131

The central role of gastrin in Helicobacter pylori gastric carcinogenesis.

Published in:

Scandinavian Journal of Gastroenterology, 2025, v. 60, n. 7, p. 652, doi. 10.1080/00365521.2025.2509094

By:

Waldum, Helge;
Modlin, Irvin

Publication type:

Article

Translational studies on pancreatic cancer and gastric cancer: a methodology in PhD thesis.

Published in:

Frontiers in Pharmacology, 2025, p. 1, doi. 10.3389/fphar.2025.1604017

By:

Resell, Mathilde;
Qvigstad, Gunnar;
Wang, Timothy C.;
Quante, Anne S.;
González-Fernández, África;
Waldum, Helge;
Chen, Duan;
Zhao, Chun-Mei

Publication type:

Article

Somatostatin-receptor 2 (sst2)-mediated effects of endogenous somatostatin on exocrine and endocrine secretion of the rat stomach.

Published in:

2005

By:

Fykse, Vidar;
Coy, David H;
Waldum, Helge Lyder;
Sandvik, Arne Kristian

Publication type:

journal article

Withdrawing PPI Therapy: Response to Metz et al.

Published in:

2012

By:

Waldum, Helge L;
Sandvik, Arne K;
Hauso, Øyvind;
Qvigstad, Gunnar;
Fossmark, Reidar

Publication type:

Letter

Protonpumpehemmere og magekreft.

Published in:

Journal of the Norwegian Medical Association / Tidsskrift for Den Norske Laegeforening, 2016, v. 136, n. 1, p. 13, doi. 10.4045/tidsskr.15.1032

By:

Waldum, Helge L.

Publication type:

Article

Re: E-sigaretter - til skade eller nytte?

Published in:

Journal of the Norwegian Medical Association / Tidsskrift for Den Norske Laegeforening, 2015, v. 135, n. 15, p. 1338, doi. 10.4045/tidsskr.15.0765

By:

Waldum, Helge

Publication type:

Article

Re: E-sigaretter - til skade eller nytte?

Published in:

Journal of the Norwegian Medical Association / Tidsskrift for Den Norske Laegeforening, 2015, v. 135, n. 14, p. 1222, doi. 10.4045/tidsskr.15.0712

By:

Waldum, Helge L.

Publication type:

Article

Proton Pump Inhibitors and Dementia Incidence.

Published in:

JAMA Neurology, 2016, v. 73, n. 8, p. 1026, doi. 10.1001/jamaneurol.2016.1497

By:

Waldum, Helge L.;
Martinsen, Tom Christian

Publication type:

Article

Carbon Monoxide Levels Experienced by Heavy Smokers Impair Aerobic Capacity and Cardiac Contractility and Induce Pathological Hypertrophy.

Published in:

Inhalation Toxicology, 2008, v. 20, n. 7, p. 635, doi. 10.1080/08958370701883821

By:

Bye, Anja;
Sørhaug, Sveinung;
Ceci, Marcello;
Høydal, Morten A.;
Stølen, Tomas;
Heinrich, Garrett;
Tjønna, Arnt E.;
Najjar, Sonia M.;
Nilsen, Odd G.;
Catalucci, Daniele;
Grimaldi, Serena;
Contu, Riccardo;
Steinshamn, Sigurd;
Condorelli, Gianluigi;
Smith, Godfrey L.;
Ellingsen, Øyvind;
Waldum, Helge;
Wisløff, Ulrik

Publication type:

Article

Pre- and postnatal testosterone administration induces proliferative epithelial lesions with neuroendocrine differentiation in the dorsal lobe of the rat prostate.

Published in:

Prostate, 1999, v. 40, n. 2, p. 65, doi. 10.1002/(SICI)1097-0045(19990701)40:2<65::AID-PROS1>3.0.CO;2-X

By:

Angelsen, Anders;
Falkmer, Sture;
Sandvik, Arne K.;
Waldum, Helge L.

Publication type:

Article

Neuroendocrine cells in the prostate of the rat, guinea pig, cat, and dog.

Published in:

Prostate, 1997, v. 33, n. 1, p. 18, doi. 10.1002/(SICI)1097-0045(19970915)33:1<18::AID-PROS4>3.0.CO;2-5

By:

Angelsen, Anders;
Mecsei, Reidun;
Sandvik, Arne K.;
Waldum, Helge L.

Publication type:

Article

Use of neuroendocrine serum markers in the follow-up of patients with cancer of the prostate.

Published in:

Prostate, 1997, v. 31, n. 2, p. 110, doi. 10.1002/(SICI)1097-0045(19970501)31:2<110::AID-PROS6>3.0.CO;2-R

By:

Angelsen, Anders;
Syversen, Unni;
Stridsberg, Mats;
Haugen, Olav A.;
Mjølnerød, Ove Kr.;
Waldum, Helge L.

Publication type:

Article

Neuroendocrine differentiation in carcinomas of the prostate: Do neuroendocrine serum markers reflect immunohistochemical findings?

Published in:

Prostate, 1997, v. 30, n. 1, p. 1, doi. 10.1002/(SICI)1097-0045(19970101)30:1<1::AID-PROS1>3.0.CO;2-T

By:

Angelsen, Anders;
Syversen, Unni;
Haugen, Olav A.;
Stridsberg, Mats;
Mjølnerød, Ove Kr.;
Waldum, Helge L.

Publication type:

Article

Expression of erythropoietin and neuroendocrine markers in clear cell renal cell carcinoma.

Published in:

APMIS, 2017, v. 125, n. 3, p. 213, doi. 10.1111/apm.12654

By:

Mjønes, Patricia G.;
Nordrum, Ivar S.;
Qvigstad, Gunnar;
Sørdal, Øystein;
Rian, Liselotte Linnea Mårtensson;
Waldum, Helge L.

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

Expression of non-mast cell histidine decarboxylase in tumor-associated microvessels in human esophageal squamous cell carcinomas.

Published in:

APMIS, 2008, v. 116, n. 12, p. 1034, doi. 10.1111/j.1600-0463.2008.01048.x

By:

ZHENFENG LI;
JINZHONG LIU;
FUAI TANG;
YIQING LIU;
WALDUM, HELGE L.;
GUANGLIN CUI

Publication type:

Article

Expression of neuroendocrine markers in non-small cell lung cancer.

Published in:

APMIS, 2007, v. 115, n. 2, p. 152, doi. 10.1111/j.1600-0463.2007.apm_542.x

By:

Sørhaug, Sveinung;
Steinshamn, Sigurd;
Haaverstad, Rune;
Nordrum, Ivar S.;
Martinsen, Tom C.;
Waldum, Helge L.

Publication type:

Article

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

Relationship Between the Eff icacy of Amoxicillin and Intragastric pH for the Treatment of Helicobacter pylori Infection.

Published in:

Helicobacter, 1997, v. 2, n. 3, p. 144, doi. 10.1111/j.1523-5378.1997.tb00076.x

By:

Kleveland, Per M.;
Waldum, Helge L.;
Brenna, Eiliv;
Aase, Steinar;
Mæland, Johan A.

Publication type:

Article

A Plasma Protein Biomarker Strategy for Detection of Small Intestinal Neuroendocrine Tumors.

Published in:

Neuroendocrinology, 2021, v. 111, n. 9, p. 840, doi. 10.1159/000510483

By:

Kjellman, Magnus;
Knigge, Ulrich;
Welin, Staffan;
Thiis-Evensen, Espen;
Gronbaek, Henning;
Schalin-Jäntti, Camilla;
Sorbye, Halfdan;
Joergensen, Maiken Thyregod;
Johanson, Viktor;
Metso, Saara;
Waldum, Helge;
Søreide, Jon Arne;
Ebeling, Tapani;
Lindberg, Fredrik;
Landerholm, Kalle;
Wallin, Goran;
Salem, Farhad;
Schneider, Maria del Pilar;
Belusa, Roger

Publication type:

Article

Serotonin in blood: Assessment of its origin by concomitant determination of [beta]-thromboglobulin (platelets) and chromogranin A (enterochromaffin cells)

Published in:

2013

By:

Zeinali, Fatemeh;
Fossmark, Reidar;
Hauso, Oyvind;
Wiseth, Rune;
Hjertner, Oyvind;
Waldum, Helge L

Publication type:

Journal Article

Serotonin in blood: Assessment of its origin by concomitant determination of β-thromboglobulin (platelets) and chromogranin A (enterochromaffin cells).

Published in:

Scandinavian Journal of Clinical & Laboratory Investigation, 2013, v. 73, n. 2, p. 148, doi. 10.3109/00365513.2012.756121

By:

Zeinali, Fatemeh;
Fossmark, Reidar;
Hauso, Øyvind;
Wiseth, Rune;
Hjertner, Øyvind;
Waldum, Helge L.

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

Inflammation and Digestive Cancer.

Published in:

International Journal of Molecular Sciences, 2023, v. 24, n. 17, p. 13503, doi. 10.3390/ijms241713503

By:

Waldum, Helge;
Fossmark, Reidar

Publication type:

Article

Time to Classify Tumours of the Stomach and the Kidneys According to Cell of Origin.

Published in:

International Journal of Molecular Sciences, 2021, v. 22, n. 24, p. 13386, doi. 10.3390/ijms222413386

By:

Waldum, Helge;
Mjønes, Patricia

Publication type:

Article

Gastritis, Gastric Polyps and Gastric Cancer.

Published in:

International Journal of Molecular Sciences, 2021, v. 22, n. 12, p. 6548, doi. 10.3390/ijms22126548

By:

Waldum, Helge;
Fossmark, Reidar

Publication type:

Article

Correct Identification of Cell of Origin May Explain Many Aspects of Cancer: The Role of Neuroendocrine Cells as Exemplified from the Stomach.

Published in:

International Journal of Molecular Sciences, 2020, v. 21, n. 16, p. 5751, doi. 10.3390/ijms21165751

By:

Waldum, Helge;
Mjønes, Patricia G.

Publication type:

Article

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.

Published in:

International Journal of Molecular Sciences, 2020, v. 21, n. 3, p. 927, doi. 10.3390/ijms21030927

By:

Aasarød, Kristin Matre;
Waldum, Helge Lyder;
Stunes, Astrid Kamilla;
Sandvik, Arne Kristian;
Flatberg, Arnar;
Mjønes, Patricia;
Syversen, Unni;
Bakke, Ingunn;
Fossmark, Reidar

Publication type:

Article

The Phylogeny and Biological Function of Gastric Juice—Microbiological Consequences of Removing Gastric Acid.

Published in:

International Journal of Molecular Sciences, 2019, v. 20, n. 23, p. 6031, doi. 10.3390/ijms20236031

By:

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

Publication type:

Article

Adverse Effects of Proton Pump Inhibitors—Evidence and Plausibility.

Published in:

International Journal of Molecular Sciences, 2019, v. 20, n. 20, p. 5203, doi. 10.3390/ijms20205203

By:

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

Publication type:

Article

The Enterochromaffin-like [ECL] Cell—Central in Gastric Physiology and Pathology.

Published in:

International Journal of Molecular Sciences, 2019, v. 20, n. 10, p. 2444, doi. 10.3390/ijms20102444

By:

Waldum, Helge L.;
Sørdal, Øystein F.;
Mjønes, Patricia G.

Publication type:

Article

Types of Gastric Carcinomas.

Published in:

International Journal of Molecular Sciences, 2018, v. 19, n. 12, p. 4109, doi. 10.3390/ijms19124109

By:

Waldum, Helge L.;
Fossmark, Reidar

Publication type:

Article

Antral G cells in rats during dosing with a PPARα agonist: a morphometric and immunocytochemical study.

Published in:

Medical Electron Microscopy, 2003, v. 36, n. 1, p. 18, doi. 10.1007/s007950300003

By:

Martinsen, T. C.;
Skogaker, Nan E. T.;
Bendheim, Marianne Ø.;
Waldum, Helge L.

Publication type:

Article

The Gastrin Receptor Antagonist Netazepide ( YF476) Prevents Oxyntic Mucosal Inflammation Induced by Helicobacter Pylori Infection in Mongolian Gerbils.

Published in:

Helicobacter, 2013, v. 18, n. 6, p. 397, doi. 10.1111/hel.12066

By:

Sørdal, Øystein;
Waldum, Helge;
Nordrum, Ivar S.;
Boyce, Malcolm;
Bergh, Kåre;
Munkvold, Bjørn;
Qvigstad, Gunnar

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

Carbachol stimulation of gastric acid secretion and its effects on the parietal cell.

Published in:

1998

By:

Sandvik, Arne K;
Mårvik, Ronald;
Dimaline, Rod;
Waldum, Helge L;
Sandvik, A K;
Mårvik, R;
Dimaline, R;
Waldum, H L

Publication type:

journal article

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

Aerobic interval training vs. continuous moderate exercise in the metabolic syndrome of rats artificially selected for low aerobic capacity.

Published in:

Cardiovascular Research, 2009, v. 81, n. 4, p. 723

By:

Per Magnus Haram;
Ole J. Kemi;
Sang Jun Lee;
Marianne Ø. Bendheim;
Qusay Y. Al-Share;
Helge L. Waldum;
Lori J. Gilligan;
Lauren G. Koch;
Steven L. Britton;
Sonia M. Najjar;
Ulrik Wisløff

Publication type:

Article

Gastrin Secretion After Bariatric Surgery-Response to a Protein-Rich Mixed Meal Following Roux-En-Y Gastric Bypass and Sleeve Gastrectomy: a Pilot Study in Normoglycemic Women.

Published in:

Obesity Surgery, 2016, v. 26, n. 7, p. 1448, doi. 10.1007/s11695-015-1985-z

By:

Grong, Eivind;
Græslie, Hallvard;
Munkvold, Bjørn;
Arbo, Ingerid;
Kulseng, Bård;
Waldum, Helge;
Mårvik, Ronald

Publication type:

Article

HERMOD PETERSEN.

Published in:

Journal of the Norwegian Medical Association / Tidsskrift for Den Norske Laegeforening, 2023, v. 143, n. 6, p. 561

By:

DYBDAHL, JAN H.;
KLEVELAND, PER MARTIN;
WALDUM, HELGE L.;
BRENNA, EILIV;
SANDVIK, ARNE K.

Publication type:

Article

Long-term serotonin administration leads to higher bone mineral density, affects bone architecture, and leads to higher femoral bone stiffness in rats.

Published in:

Journal of Cellular Biochemistry, 2006, v. 97, n. 6, p. 1283, doi. 10.1002/jcb.20733

By:

Gustafsson, Björn I.;
Westbroek, Irene;
Waarsing, Jan H.;
Waldum, Helge;
Solligård, Erik;
Brunsvik, Anders;
Dimmen, Sigbjørn;
van Leeuwen, Johannes P.T.M.;
Weinans, Harrie;
Syversen, Unni

Publication type:

Article

Hypergastrinemia as a Cause of Chromogranin A Increase in Blood in Patients Suspected to Have Neuroendocrine Tumor.

Published in:

Digestion, 2001, v. 64, n. 2, p. 71, doi. 10.1159/000048842

By:

Kleveland, Ola;
Syversen, Unni;
Slørdahl, Kari;
Waldum, Helge L.

Publication type:

Article

Towards Understanding of Gastric Cancer Based upon Physiological Role of Gastrin and ECL Cells.

Published in:

Cancers, 2020, v. 12, n. 11, p. 3477, doi. 10.3390/cancers12113477

By:

Waldum, Helge;
Mjønes, Patricia

Publication type:

Article

Reg protein in gastric cancer tumour cells

Published in:

2003

By:

Waldum, Helge L.;
Qvigstad, Gunnar;
Sandvik, Arne K.

Publication type:

Letter

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

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

Risk of gastric and oesophageal adenocarcinomas following discontinuation of long-term proton-pump inhibitor therapy.

Published in:

2023

By:

Waldum, Helge

Publication type:

Letter to the Editor