title: Double-blind comparison of lansoprazole, ranitidine, and placebo in the treatment of acute duodenal ulcer. Lansoprazole Study Group.
abstract: OBJECTIVE
  To study in a double-blind controlled manner the effects of lansoprazole 15 mg or 30 mg daily compared with ranitidine 300 mg once daily and placebo in the relieving of symptoms and healing of acute duodenal ulceration.
  
  
  METHODS
  Two hundred eighty patients with duodenal ulcer entered in to the study from 30 centers. They were randomized in a double-blind manner into four groups with 80 patients entered into each active treatment group and 40 patients into the placebo group. Endoscopy was performed at 2- and 4-wk intervals to assess healing. Symptom relief was recorded, serum gastrin levels were measured, and gastric mucosal biopsies were obtained to evaluate for the presence of acute and chronic inflammation, the presence of neoplasia, and the extent of gastric endocrine growth at the time of endoscopy.
  
  
  RESULTS
  After 4 wk of treatment using per protocol analysis, 19 of 40 (47.5%) patients receiving placebo had healed compared with 55 of 78 (70.5%) receiving ranitidine (p < 0.05 vs. placebo), 61 of 76 (80.3%) receiving lansoprazole 30 mg (p < 0.05 vs. placebo), and 72 of 78 (92.3%) receiving lansoprazole 15 mg (p < 0.05 vs. placebo and ranitidine). In patients with evaluable data, lansoprazole 30 mg and ranitidine produced greater relief of night-time symptoms and lansoprazole 15 mg produced greater relief of both day- and night-time symptoms than did placebo after 4 wk of treatment. Ranitidine increased fasting serum gastrin levels (22%; p < 0.05 vs. placebo), whereas both lansoprazole regimens produced more marked rises in serum gastrin (54% and 60%; p < 0.05 vs. placebo and ranitidine). Lansoprazole 15 mg and 30 mg also increased the density of antral G-cells (105.8% and 128.80%; p < 0.05 vs. baseline) and greater curvature Grimelius-positive cells (20.33% and 28.8%; p < 0.05 vs. baseline); there were no increases in the density of antral EC- or D-cells, and there was no alteration of gastric endocrine growth as judged by the Solcia classification. Both ranitidine and lansoprazole were associated with decreased antral Helicobacter pylori density accompanied, in the lansoprazole groups, by decreased antral inflammation scores. All antisecretory regimens were associated with increased inflammatory scores in the greater curvature.
  
  
  CONCLUSIONS
  In acute duodenal ulceration, treatment with lansoprazole 15 and 30 mg produced 4-wk healing rates and symptom relief superior to those produced by placebo and the 15-mg dose similar to those produced by placebo. The 15-mg dose of lansoprazole was also superior to ranitidine in healing duodenal ulcer after 4 wk of therapy.
authors.affiliation: Houston Institute for Clinical Research, Texas.
authors.forename: F
authors.initials: F
authors.lastname: Lanza
authors.forename: J
authors.initials: J
authors.lastname: Goff
authors.forename: C
authors.initials: C
authors.lastname: Scowcroft
authors.forename: D
authors.initials: D
authors.lastname: Jennings
authors.forename: P
authors.initials: P
authors.lastname: Greski-Rose
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000208:Acute Disease; D000328:Adult; D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000382:microbiology; D005260:Female; D005753:Gastric Mucosa / Q000382:microbiology / Q000473:pathology; D005755:Gastrins / Q000097:blood; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D064747:Lansoprazole; D008297:Male; D009853:Omeprazole / Q000031:analogs & derivatives* / Q000627:therapeutic use; D011899:Ranitidine / Q000627:therapeutic use*
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000897:Anti-Ulcer Agents; D005755:Gastrins; D064747:Lansoprazole; D011899:Ranitidine; D009853:Omeprazole