title: Effect of long-term half-dose famotidine therapy on corpus gastritis in peptic ulcer disease.
abstract: BACKGROUND
  Recent studies showed that acid-suppressive therapy aggravates corpus gastritis in patients with Helicobacter pylori infection.
  
  
  OBJECTIVE
  The aim of this study was to evaluate the effect of famotidine, a histamine receptor antagonist on corpus gastritis in patients with peptic ulcer disease.
  
  
  METHODS
  We enrolled 287 patients, 173 with duodenal ulcer and 114 with gastric ulcer and 100 patients with H. pylori-positive gastritis as control subjects. Patients with peptic ulcer were classified according to whether or not they received famotidine-maintenance therapy (20 mg/day) after primary treatment. At the time of endoscopy, biopsy specimens were obtained from the antrum and the corpus. The degrees of neutrophil and lymphocyte infiltration, atrophy and intestinal metaplasia were scored according to the updated Sydney System.
  
  
  RESULTS
  The degrees of neutrophil infiltration and atrophy in the corpus were significantly less in patients with gastric ulcer or duodenal ulcer than in patients with H. pylori-positive gastritis (P < 0.01). Differences in the degrees of neutrophil infiltration and atrophy in the corpus between the non-maintenance group and the maintenance group were not significant.
  
  
  CONCLUSIONS
  Long-term therapy with famotidine does not appear to lead to an increase in the incidence of corpus gastritis or corpus atrophy in patients with peptic ulcer disease.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, Matsushima, Kurashiki, Japan. tkamada@med.kawasaki-m.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Kamada
authors.forename: J
authors.initials: J
authors.lastname: Hata
authors.forename: H
authors.initials: H
authors.lastname: Kusunoki
authors.forename: K
authors.initials: K
authors.lastname: Sugiu
authors.forename: M
authors.initials: M
authors.lastname: Ito
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Kawamura
authors.forename: K
authors.initials: K
authors.lastname: Chayama
authors.forename: K
authors.initials: K
authors.lastname: Haruma
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000863:Antacids / Q000008:administration & dosage; D000897:Anti-Ulcer Agents / Q000008:administration & dosage*; D015738:Famotidine / Q000008:administration & dosage*; D005260:Female; D005744:Gastric Acid / Q000378:metabolism; D005756:Gastritis / Q000150:complications / Q000188:drug therapy* / Q000473:pathology; D016481:Helicobacter Infections; D016480:Helicobacter pylori; D006635:Histamine H2 Antagonists / Q000008:administration & dosage*; D006801:Humans; D008214:Lymphocytes; D008297:Male; D008875:Middle Aged; D009504:Neutrophils; D010437:Peptic Ulcer / Q000150:complications / Q000188:drug therapy*
chemical_list: D000863:Antacids; D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D015738:Famotidine