title: Antral glutathione concentration and glutathione S-transferase activity in patients with and without Helicobacter pylori.
abstract: Previously we demonstrated an inverse relation between cancer of the gastrointestinal tract and glutathione S-transferase activity of the gastrointestinal mucosa. Chronic infection with H. pylori has been associated with an increased risk of gastric cancer. The aim of this study was to investigate the levels of glutathione and glutathione S-transferase activity in H. pylori-infected and noninfected antral mucosa. Glutathione and glutathione S-transferases were measured in antral biopsies of patients with nonulcer dyspepsia without H. pylori infection (A), with prior H. pylori infection who became H. pylori negative after eradication therapy (B) and with proven H. pylori infection (C). Glutathione concentration and glutathione S-transferase activity in group A were 31.0 (range 6.0-59.6) nmol/mg protein and 810 (range 165-1312) nmol/min/mg protein, in group B 27.0 (range 5.0-53.8) nmol/mg protein and 745 (range 403-1199) nmol/min/mg protein, and in group C 18.5 (range 1.6-55.8) nmol/mg protein and 572 (range 144-1047) nmol/min/mg protein, respectively. The glutathione and glutathione S-transferase values were significantly lower in patients infected with H. pylori than in patients who were H. pylori negative.
authors.affiliation: Department of Gastroenterology and Hepatology, University Hospital Nijmegen, The Netherlands.
authors.forename: M L
authors.initials: ML
authors.lastname: Verhulst
authors.forename: A H
authors.initials: AH
authors.lastname: van Oijen
authors.forename: H M
authors.initials: HM
authors.lastname: Roelofs
authors.forename: W H
authors.initials: WH
authors.lastname: Peters
authors.forename: J B
authors.initials: JB
authors.lastname: Jansen
mesh_terms: D000328:Adult; D004415:Dyspepsia / Q000378:metabolism; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism; D005978:Glutathione / Q000032:analysis*; D005982:Glutathione Transferase / Q000378:metabolism*; D016481:Helicobacter Infections / Q000378:metabolism*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D011706:Pyloric Antrum / Q000378:metabolism*
chemical_list: D005982:Glutathione Transferase; D005978:Glutathione