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Endocrinology, Vol 113, 903-906, Copyright © 1983 by Endocrine Society
ARTICLES |
JR Sowers, FW Beck, N Stern and N Asp
This study investigated the role of dopaminergic mechanisms in modulation of corticosteroid secretion in sheep. Administration of the dopamine antagonist metoclopramide (200 micrograms/kg iv) in six mature sheep resulted in rapid and parallel rises in plasma cortisol, corticosterone, 18-hydroxycorticosterone, and aldosterone. Treatment of the sheep with 4 mg dexamethasone im every 6 h for 4 days abolished the response of all four corticosteroids to metoclopramide in the six sheep. These observations suggest that metoclopramide may stimulate corticosteroid secretion in sheep via nonspecific stressor effects.
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