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Effect of glucagon on the secretory process in the rat exocrine pancreas

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Summary

Glucagon was infused into conscious rats in doses of 10 to 80 μg/h for periods up to 24 h. The effect on the secretory process of the exocrine pancreas was studied in vitro using isolated pancreatic lobules. A pronounced inhibition of the rate of protein synthesis and discharge of stored and newly synthesized proteins combined with increased enzyme content in the pancreas were observed after 30 min infusion. This effect was absent after longer infusion periods of up to six hours. After 12 to 24 h infusions a marked degranulation and decrease in enzyme content was observed. While the rate of protein synthesis was not significantly enhanced, both the basal and stimulated discharge of enzymes from the pancreas were increased. The results suggest a biphasic response of the pancreas to prolonged glucagon infusion.

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Dedicated to Professor Helmut Ferner, Vienna, Austria, on the occasion of his 65th birthday

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Adler, G. Effect of glucagon on the secretory process in the rat exocrine pancreas. Cell Tissue Res. 182, 193–204 (1977). https://doi.org/10.1007/BF00220588

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