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  • Title: Effect of somatostatin on exocrine pancreatic secretion stimulated by pancreozymin-secretin or by a test meal in the dog.
    Author: Kayasseh L, Gyr K, Stalder GA, Rittmann WW, Girard J.
    Journal: Horm Res; 1978; 9(3):176-84. PubMed ID: 640582.
    Abstract:
    In 4 dogs with chronic duodenal and gastric fistulae, exocrine pancreatic function was assessed by cannulating the pancreatic duct and collecting the duodenal contents. Both methods were applied in each animal. Pancreatic secretion was stimulated by infusion of 2 CHR units of pancreozymin and secretin or by administration of a liquid test meal, injected into the stomach through the gastric fistula. During both experiments 3.5 microgram/kg somatostatin was given as bolus injection followed by an infusion of 3.5 microgram/kg/h. Somatostatin caused a significant reduction in protein and amylase output and in the bicarbonate concentration during stimulation with pancreozymin-secretin. Volume and bicarbonate slightly decreased but not to a significant extent. Duodenal volume and the duodenal activities of trypsin and amylase were significantly reduced during test meal stimulation and somatostatin infusion. Somatostatin is a potent inhibitor of exocrine pancreatic function mainly influencing enzyme secretion.
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