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Am J Med. 1987 May 29;82(5B):49-54.

Effect of somatostatin analogue (SMS 201-995, Sandostatin) on pancreatic secretion in humans.


The effect of the long-acting somatostatin analogue SMS 201-995 on exocrine pancreatic function and hormone release was investigated in a double-blind, placebo-controlled study in healthy subjects. SMS 201-995 was administered subcutaneously at a dose of 25 micrograms twice daily, and all tests were performed 30 minutes after the morning injection. Pancreatic enzyme secretion, gall bladder contraction, and cholecystokinin response after a Lundh meal were completely inhibited by SMS, while pancreatic enzyme secretion elicited by intravenous injection of secretin and pancreozymin was suppressed by 80 percent. The inhibitory effect of SMS on endogenous cholecystokinin release was fully operative on the sixth day of injection treatment, whereas the inhibitory effect on exogenous cholecystokinin injection significantly decreased after SMS administration for seven days, indicating desensitization of the end organ by somatostatin. The release of pancreatic polypeptide by a solid test meal is abolished by administration of 25 micrograms of SMS, the release of gastric inhibitory polypeptide is nearly completely suppressed, the response of insulin and C-peptide are significantly lowered, and the gastrin response is only slightly reduced.

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