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Journal of Clinical Endocrinology & Metabolism, Vol 57, 1179-1185, Copyright © 1983 by Endocrine Society


ARTICLES

Responses of plasma renin activity, aldosterone, adrenocorticotropin, and cortisol to dermorphin, a new synthetic potent opiate-like peptide, in man

EC Degli Uberti, G Trasforini, S Salvadori, A Margutti, R Tomatis, M Bianconi, C Rotola and R Pansini

This study was designed to investigate the effect of dermorphin (D), a new synthetic potent opiate-like peptide (H-Tyr-D-Ala-Phe-Gly-Tyr-Pro- Ser-NH2), on PRA, plasma aldosterone (PA), plasma cortisol (PC), and plasma ACTH levels in normal men. D infusion (5.5 micrograms/kg X min for 30 min) significantly increased PRA (P less than 0.01) and decreased PC levels (P less than 0.02). D produced a small decrease in ACTH and a small increase in PA. Pretreatment with the opioid receptor antagonist naloxone (N) blunted the D-induced PRA increase and completely prevented the D-induced PC decrease, but enhanced PC and ACTH levels. These data indicate that the action of D is mediated through opioid receptors, and are consistent with the conclusion that 1) D, a new opioid peptide, increases PRA levels, perhaps via activation of the sympathetic nervous system, providing evidence that opioid peptides may exert an influence on renin secretion; and 2) D suppresses PC levels, perhaps by affecting ACTH secretion, corroborating previous observations that opioid peptides might affect the function of the pituitary-adrenocortical axis.





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Copyright © 1983 by The Endocrine Society