THE CONTROL OF ARGININE-INDUCED INSULIN SECRETION IN THE RAT: THE ROLE OF CATECHOLAMINES

in Journal of Endocrinology
Authors:
R. A. BACCHUS
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L. MEADE
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J. S. M. HUTCHINSON
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D. R. LONDON
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SUMMARY

The effect of alterations in catecholamine metabolism on arginine-induced insulin release was studied in the anaesthetized rat. Alpha-methyl-p-tyrosine, which inhibits catecholamine synthesis, guanethidine, which prevents catecholamine release, and reserpine, which depletes catecholamine stores, all enhanced the secretion of insulin and reduced the rise in blood glucose after the amino acid load. Adrenalectomy, with or without corticosterone replacement, had a similar effect. Adrenaline inhibited the insulin response to arginine. It was concluded that in the rat, adrenergic mechanisms modulate the insulin response to arginine.

 

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