Effect of estradiol benzoate on rat testis and adrenal.

The effects of in vivo administration of estradiol benzoate at a dose of 50 micrograms/rat/day for 15 days on testosterone production of testis and adrenal in vitro were investigated in rats. The data revealed that the androgen synthesis of both the steroidogenic organs were reduced by the treatment. The decrease in androgen production by testis was related to its reduced sperm count and weight. On the contrary, accumulation of cholesterol occurred in treated rat testis indicating inhibition of its steroidogenesis. This data confirm our earlier reports on the direct effect of estrogen on testis.