[Effect of mestranol and chlormadinone acetate on basal and GnRH stimulated gonadotropin secretion in Turner's syndrome].

In 19 patients aged from 12 to 24 years (average age 17.0 years) with Turner's syndrome the influence of mestranol and chlormadinone acetate on both basal and GnRH stimulated secretion of gonadotropins was investigated by means of sequential test (0.5 g arginine hydrochloride/kg body weight, 25 micrograms GnRH and 200 micrograms TRH). This test was performed before, during and after treatment. Serum levels of LH and FSH were determined by RIA. Before hormonal treatment 15 patients showed hypergonadotropic, and 4 normo- or hypogonadotropic basal levels, respectively. By GnRH the increase of the gonadotropin secretion was individually different. Under hormonal influence the basal gonadotropin levels were significantly reduced, with the responsibility to GnRH going lost. After treatment in 15 women hypergonadotropic levels were recovered. But FSH serum levels were somewhat lower and LH levels somewhat higher than before hormonal treatment.