Effect of 2-bromo-alpha-ergocryptine (CB-154) on estrogen induced growth of the rat prostate.

Castrate male Sprague-Dawley rats were treated with either testosterone; testosterone and estradiol; testosterone, estradiol and 2-Bromo-alpha-Ergocryptine (CB-154), an inhibitor of prolactin secretion; or testosterone and CB-154. Estradiol potentiated testosterone-induced growth of the dorsal, lateral, and ventral prostate and this effect was not counteracted by CB-154. Estradiol only induced hypertrophy of the dorsal and ventral prostate, however, hyperplastic changes occurred in the lateral prostate.