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  • Title: Effect of pancreastatin on pancreatic endocrine function in the conscious rat.
    Author: Funakoshi A, Miyasaka K, Kitani K, Tatemoto K.
    Journal: Regul Pept; 1989 Mar; 24(3):225-31. PubMed ID: 2652201.
    Abstract:
    We have studied the effects of pancreastatin on insulin and glucagon secretions in vivo in the conscious rat. Rats were prepared with a gastric fistula and with both external jugular veins cannulated. We found that an i.v. infusion of pancreastatin (1 and 10 nmol/kg/h) inhibited the plasma insulin response and increased the plasma glucose response to the intragastric infusion of glucose in a dose-dependent manner. Furthermore, the infusion of pancreastatin increased the plasma glucagon response to the i.v. infusion of arginine in a dose-dependent manner, and it inhibited the plasma insulin response. However, such an infusion of pancreastatin had no effect on the basal plasma glucose level, nor did it have any effect on plasma insulin and glucagon concentrations. Thus, it is suggested that in the rat, the newly discovered pancreastatin is a regulator of islet cell function.
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