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  • Title: Control of cyclic AMP accumulation in dog acini: its relation to amylase release.
    Author: Laval J, Bommelaer G, Senarens C, Vaysse N, Ribet A.
    Journal: Digestion; 1983; 28(2):82-9. PubMed ID: 6197335.
    Abstract:
    In dispersed acini from dog pancreas, exogenous derivatives of cAMP stimulated the amylase release; 8-Br-cAMP was a more potent stimulant than Bt2-cAMP, and induced a potentiation of the amylase release stimulated by cerulein. Both secretin and vasoactive intestinal peptide (VIP), increased cellular cAMP, with a greater potency for secretin, and supramaximal concentration of secretin plus VIP increased cellular cAMP to the same degree as that obtained with secretin alone. 125I-VIP-binding studies showed that in dog pancreatic acini there is a 95% decrease in the number of VIP-preferring receptors with minor changes in receptor affinity as compared to guinea-pig pancreas. The absence of effect between secretin or VIP and cerulein in stimulating amylase release could likely be explained by the low number in VIP-preferring receptors on dog pancreatic acini.
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