title: Effects of indomethacin on intragastric pH and meal-stimulated serum gastrin secretion in rheumatoid arthritis patients.
abstract: The effects of oral indomethacin on intragastric pH and serum gastrin were investigated in rheumatoid arthritis patients. Nine patients (1 male, 8 female) without a history of peptic ulcer disease and 6 patients with a history of peptic ulcer disease (5 male, 1 female) were studied. To obviate Helicobacter pylori infection as a confounding factor, only patients with positive H. pylori serology were included. After a 5-day period of placebo treatment and after a 5-day period of indomethacin (50 mg t.d.s.; total dose 750 mg), 24-h intragastric pH and basal and meal-stimulated serum gastrin levels were measured in a double-blind placebo controlled cross-over study. There were no differences in the median 24-h pH values between placebo and indomethacin users irrespective of peptic ulcer disease history. Indomethacin resulted in a higher basal and stimulated gastrin response than placebo in patients with a history of peptic ulcer disease. The basal and incremental responses were lower in patients with a history of peptic ulcer disease than in patients without a history of peptic ulcer disease, both during indomethacin and placebo. The same basal and stimulated incremental serum gastrin responses were found during placebo and indomethacin treatment in patients without a history of peptic ulcer disease. No correlation was established between median 2-h post-prandial intragastric pH and post-prandial incremental serum gastrin concentration. We conclude that indomethacin does not influence the intragastric pH of rheumatoid arthritis patients irrespective of history of peptic ulcer disease.
authors.affiliation: Department of Rheumatology, University Hospital, Leiden, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Janssen
authors.forename: L C
authors.initials: LC
authors.lastname: Baak
authors.forename: J B
authors.initials: JB
authors.lastname: Jansen
authors.forename: B A
authors.initials: BA
authors.lastname: Dijkmans
authors.forename: J P
authors.initials: JP
authors.lastname: Vandenbroucke
authors.forename: C B
authors.initials: CB
authors.lastname: Lamers
mesh_terms: D000284:Administration, Oral; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000150:complications / Q000188:drug therapy*; D001481:Basal Metabolism; D004311:Double-Blind Method; D005260:Female; D005502:Food; D005745:Gastric Acidity Determination; D005755:Gastrins / Q000097:blood / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007213:Indomethacin / Q000008:administration & dosage / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D010437:Peptic Ulcer / Q000139:chemically induced*
chemical_list: D005755:Gastrins; D007213:Indomethacin