Male contraception by means of hormonal approach was initiated more than 60 years ago when men became azoospermic with administration of testosterone. The basic principle of male hormonal contraception is suppression ...Male contraception by means of hormonal approach was initiated more than 60 years ago when men became azoospermic with administration of testosterone. The basic principle of male hormonal contraception is suppression of spermatogenesis. Exogenous testosterone/testosterone analogs alone or in combination with progestin have been tested for contraceptive efficacy by inhibiting gonadotropins release from pituitary gland. In this review article, advancement in different testosterone preparation tested alone or in combination for contraceptive efficacy has been focused. Administration of testosterone or testosterone analogs alone failed to provide uniform azoospermia or severe oligospermia (gestin combination has proved better contraceptive efficacy than testosterone alone. Further, long term studies with hormonal regimens and other alternative approaches are required with fewer side effects for development of safe and reversible contraceptive.展开更多
The specific bindings of estrogen,progestin and androgen were determined inthe cytosol fraction of myomatous,adenomyotic and postmenopausal uterine tissues andof the normal endometrium and myometrium as well.It was fo...The specific bindings of estrogen,progestin and androgen were determined inthe cytosol fraction of myomatous,adenomyotic and postmenopausal uterine tissues andof the normal endometrium and myometrium as well.It was found that theconcentrations of estrogen,progestin and androgen cytosol receptors were significantlyhigher in myomatous tissue than in normal myometrium;there was also an obvious differ-ence of the concentration of the sex steroid receptors between normal endometrium andadenomyotic tissue;and the uterine tissues of postmenopausal women still retained highlevels of these sex steroid receptors.In addition,the regulation of sex steroids in thepathogenesis of myoma and adenomyosis is discussed.展开更多
文摘Male contraception by means of hormonal approach was initiated more than 60 years ago when men became azoospermic with administration of testosterone. The basic principle of male hormonal contraception is suppression of spermatogenesis. Exogenous testosterone/testosterone analogs alone or in combination with progestin have been tested for contraceptive efficacy by inhibiting gonadotropins release from pituitary gland. In this review article, advancement in different testosterone preparation tested alone or in combination for contraceptive efficacy has been focused. Administration of testosterone or testosterone analogs alone failed to provide uniform azoospermia or severe oligospermia (gestin combination has proved better contraceptive efficacy than testosterone alone. Further, long term studies with hormonal regimens and other alternative approaches are required with fewer side effects for development of safe and reversible contraceptive.
文摘The specific bindings of estrogen,progestin and androgen were determined inthe cytosol fraction of myomatous,adenomyotic and postmenopausal uterine tissues andof the normal endometrium and myometrium as well.It was found that theconcentrations of estrogen,progestin and androgen cytosol receptors were significantlyhigher in myomatous tissue than in normal myometrium;there was also an obvious differ-ence of the concentration of the sex steroid receptors between normal endometrium andadenomyotic tissue;and the uterine tissues of postmenopausal women still retained highlevels of these sex steroid receptors.In addition,the regulation of sex steroids in thepathogenesis of myoma and adenomyosis is discussed.