The participation of hypothalamic dopamine in morphine-induced prolactin release in man.
In order to assess the role of dopamine in opiate-induced prolactin secretion, morphine alone or in combination with the dopamine blocker metoclopramide, or the L-aromatic aminoacid decarboxylase inhibitor benserazide, was administered to a group of normal adult men. Morphine (10 mg) stimulated prolactin release in all subjects; however, the effect was totally abolished when 10 mag metoclopramide or 200 mg benserazide were given before the opiate agonist. The prolactin releasing effect of a s...Expand abstract
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