Abstract
Nonsteroidal anti-inflammatory agents (NSAIDs) such as aspirin (ASA) damage the gastric mucosa both in normal subjects and in arthritic patients. The aim of this study was to investigate the protective action of a new H2-receptor antagonist, ebrotidine, in the prevention of ASA-induced acute mucosal injury in the stomach of healthy volunteers. In a double-blind randomized crossover study 10 male volunteers received treatment with either placebo plus ASA (500 mg) or ebrotidine (800 mg) plus ASA twice daily for 3 days with 10 days' washout period between treatments. The mean number of gastric erosions seen at endoscopy after treatment with ebrotidine plus ASA (2.0 +/- 0.3) was significantly lower than that after placebo plus ASA (3.7 +/- 0.2). This reduction in lesion core by ebrotidine was accompanied by a significant increase in gastric blood flow (by 15% in corpus and 26% in antrum), by a rise in transmucosal potential difference (by 12%), and by a decrease of mucosal microbleeding. Ebrotidine afforded substantial protection from ASA-induced injury to the gastric mucosa, and this was accompanied by increase of the mucosal blood flow. We conclude that ebrotidine provides mucosal protection for patients taking NSAIDs.
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