Abstract
Summary
In earlier studies, cimetidine was found to protect against acetylsalicylic acid-induced gastric mucosal lesions by a mechanism other than inhibition of gastric acid secretion. The present study examined the possibility that cimetidine might protect against the intestinal mucosal injury produced by indomethacin.
Small intestinal ulceration produced by oral indomethacin (20 mg kg-1) was studied in rats treated with 0.15 M NaCl (control); 80 mg kg-1 cimetidine; 400 mg kg -1 cimetidine; and 100 μug kg-1 16-16 dimethyl prostaglandin E2. The treatments were given 30 min before and 8 hr after indomethacin. Confirming previous studies, 16-16 DMPGE2 significantly (P < 0.01) reduced the number of lesions and the sum of the lengths of ulcers per rat when compared to the control group. Neither dose of cimetidine had any effect on the intestinal lesions.
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