title: Prevention of acute aspirin-induced gastric mucosal injury by 15-R-15 methyl prostaglandin E2: an endoscopic study.
abstract: The deleterious effects of aspirin on gastric mucosa have been well documented in experimental and clinical studies. Prostaglandins offer a potential method by which this injury may be prevented. In these studies, we developed a single-dose endoscopic assay system of aspirin-induced gastric mucosal injury in normal volunteers. With this system, 27 of 30 volunteers (90%) demonstrated severe mucosal injury after ingestion of aspirin. Subsequently, we evaluated whether pretreatment with 15-R-15 methyl prostaglandin E2 prevented severe injury after ingestion of aspirin. Following an initial dose-response study, a double-blind crossover trial was performed using pretreatment with placebo or with 10-micrograms doses of 15-R-15 methyl prostaglandin E2 for 24 h before treatment with aspirin. The results of this trial indicate that prostaglandin pretreatment significantly prevented the occurrence of endoscopically visible severe gastric mucosal injury after single-dose aspirin administration.
mesh_terms: D000293:Adolescent; D000328:Adult; D001101:Arbaprostil / Q000494:pharmacology / Q000627:therapeutic use*; D001241:Aspirin / Q000008:administration & dosage / Q000009:adverse effects*; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004724:Endoscopy; D005753:Gastric Mucosa / Q000187:drug effects* / Q000473:pathology; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced / Q000517:prevention & control; D006801:Humans; D008297:Male; D011459:Prostaglandins E, Synthetic / Q000627:therapeutic use*
chemical_list: D011459:Prostaglandins E, Synthetic; D001101:Arbaprostil; D001241:Aspirin