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Neuroendocrine control of basal insulin secretion in man: a study with bromocriptine, clonidine and naloxone

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Abstract

The effects of bromocriptine (CB-154, 2.5 mg po), clonidine (0.05 mg im) and naloxone (0.4 mg im), as well as the interaction between naloxone and CB-154 or clonidine on basal insulin secretion were studied in 6 normal men. Clonidine, naloxone and CB-154 plus naloxone lowered insulin plasma levels; CB-154 alone caused only a slight reduction, whereas clonidine plus naloxone did not affect insulin secretion. These results prove the existence of a complex neuroendocrine control of basal insulin secretion through dopaminergic, adrenergic and opiate mechanisms; they also suggest that the opiate inhibitory control of insulin release may be dissociated from the dopaminergic one, but may interact with the adrenergic one.

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Zampa, G.A., Benfenati, F., Ghisoli, E. et al. Neuroendocrine control of basal insulin secretion in man: a study with bromocriptine, clonidine and naloxone. J Endocrinol Invest 4, 423–429 (1981). https://doi.org/10.1007/BF03348306

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