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We investigated the possible role of endogenous secretin and cholecystokinin (CCK) on oleic acid-stimulated pancreatic exocrine secretion in anesthetized rats. Intraduodenal infusion of oleic acid (pH 6.5) in three different doses (0.06, 0.25 and 1 mmole/hr) resulted in dose-related increases in pancreatic juice volume, bicarbonate and amylase outputs (r = 0.665, 0.736 and 0.517, respectively) (P less than 0.001). Plasma secretin and CCK concentrations also elevated significantly in response to oleic acid, in a dose-related manner (r = 0.721 and 0.546, respectively) (P less than 0.001). There were statistically significant correlations between plasma secretin concentrations and bicarbonate outputs, and between plasma CCK concentrations and amylase outputs in response to oleic acid (P less than 0.01). Potent CCK antagonist, CR 1409 (5 mg/kg.hr) administered intravenously suppressed completely increase in amylase output induced by oleic acid, and partially in juice volume and bicarbonate output. It is concluded that both endogenous secretin and CCK play important roles on oleic acid-induced pancreatic secretion in rats.
K Shiratori, and
S Watanabe, and
T Takeuchi, and
K Shimizu, and
Y Moriyoshi
October 1989,
Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology,
K Shiratori, and
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