Cimetidine and postprandial pancreatic exocrine secretion in dogs

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Abstract
In dogs fitted with a pancreatic cannula and a duodenal cannula the intake of a standard meal induced a significant increase in the flow of pancreatic secretion and in the output of amylase, total protein, bicarbonate and chloride. The oral administration (200 mg/day) of cimetidine to dogs was seen to elicit a marked decrease in postprandial flow increase and bicarbonate output, coinciding with a significant increase in amylase and total protein output. At the same time the postprandial duodenal pH remained at levels similar to those obtained in basal periods. The implications of secretin, gastrin and cholecystokinin (CCK) on these effects are discussed.