Protective effects of a prostaglandin E1oligomer on taurocholate-induced rat pancreatitis

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Abstract
Effects of prostaglandin E (PGE) on acute pancreatitis have been controversial. This study shows the effects of PGE1 oligomer, MR-356, on trypsin-taurocholate-induced acute pancreatitis in rats. Divided intraperitoneal doses of 0.6 mg/rat were administered, which increased 24 h survival rates when the oligomer was given both at 1 h before and after (group A) and immediately and 3 h after (group B) induction of pancreatitis. In group A MR-356 significantly improved the survival rates at 18 h (94 vs 61%, P < 0.05) and 24 h (68 vs 33%, P vs 39%, P < 0.05) only at 24 h, while other parameters failed to improve. The present results suggest that the PGE1 oligomer may play a beneficial role in bile-induced pancreatitis, probably through its proposed effects of stabilization of lysosomal membranes, maintenance of microcirculation and inhibition of protease in the pancreas.