Reserpine inhibits release of vasopressin from the neural lobe of the pituitary in dehydrated rats
An acute reserpine treatment has the same selective and marked depleting effect on corticoliberin-like immunoreactivity as on vasopressin-like immunoreactivity in the rat zona externa of the median eminence. Somatostatin and gonadoliberin immunoreactivities appear unmodified. Reserpine effect is blocked by pretreatment with monoamine oxidase inhibitors (pargyline or tranylcypromine). Present results support the notion of an inhibitory role of monoamines, particularly catecholamines, on the release of corticoliberin.