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In order to establish a reliable method for the production of gastric antral ulcer in rats, combined treatments with three factors: a vagal stimulant, a mucosal barrier breaker and a necrotizing agent were investigated. By the combined administration of 2-deoxy-D-glucose (2-DG; 200 mg/kg, i.v.), aspirin (100-400 mg/kg, p.o.) and hydrochloric acid (0.15 and 0.35 N, 0.5-1.5 ml/100 g, p.o.) or ammonia solution (0.5-1.0%, 0.5-1.5 ml/100 g, p.o.), gastric lesions were prominently induced in sites of both the corpus and antrum on day 2. The largest antral ulcer was induced by the combination of 2-DG (200 mg/kg), aspirin (200 mg/kg) and ammonia solution (1%, 10 ml/kg); and the mean antral ulcer index (mm2) was 43.1 +/- 4.4 and the incidence was 100%. The antral ulcer was found to penetrate the muscularis mucosae and still observed on day 21 and day 28 after ulcer induction in a few cases. From these findings, it was indicated that this antral ulcer would be a useful model for studying the etiology and therapy of gastric ulcer disease.

A Reliable Method for the Production of Antral Gastric Ulcer by a Combination of 2-Deoxy-D-Glucose, Aspirin and Ammonia in Rats.