EFFECT OF BROMOCRIPTINE (CB-154) ON OESTROGEN-INDUCED PROLACTIN RELEASE

Abstract
In order to study the interaction between estrogens and bromocriptine on PRL [prolactin] release, the ability of bromocriptine (CB-154) to counteract the estrogen-induced PRL release in 4 hyperprolactinemic amenorrhoeic women was evaluated. Bromocriptine acutely administered induced a similar percentage of PRL decrease in the same patient before and after estrogen administration. When bromocriptine was chronically administered, contemporary estrogen injection did not affect PRL release. Bromocriptine is able to block the release of PRL induced by estrogens, suggesting an interaction between estrogens and DA[dopamine]-mimetic compounds on PRL release.