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  • Title: The effect of somatostatin on release and insulinotropic action of gastric inhibitory polypeptide.
    Author: Pederson RA, Dryburgh JR, Brown JC.
    Journal: Can J Physiol Pharmacol; 1975 Dec; 53(6):1200-5. PubMed ID: 1222389.
    Abstract:
    Studies were carried out in conscious dogs in which the effect of intravenous somatostatin on immunoreactive gastric inhibitory polypeptide (IR-GIP) release was investigated. In addition, the inhibitory action of somatostatin on the insulin response to pure porcine GIP was assessed. Intravenous administration of somatostatin resulted in a delayed IR-GIP and immunoreactive insulin (IRI) response to oral glucose. Somatostatin also delayed the IR-GIP response to the ingestion of fat. In both types of experiments, initial depression of IRI levels was followed by a sharp rise in IRI release. Intravenous infusion of somatostatin produced 80% inhibition of the IRI response to pure porcine GIP. It was concluded that somatostatin inhibits the physiological release of IR-GIP and the insulinotropic action of exogenous porcine GIP.
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