Title : A comparison of the effects of danazol and gestrinone on testosterone binding to sex hormone binding globulin in vitro and in vivo.

Pub. Date : 1986 May

PMID : 3641693






4 Functional Relationships(s)
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1 A comparison of the effects of danazol and gestrinone on testosterone binding to sex hormone binding globulin in vitro and in vivo. Danazol sex hormone binding globulin Homo sapiens
2 The mean SHBG binding capacity in patients treated with danazol (400 mg/d, n = 7) and gestrinone (5 mg/week, n = 7) fell from 66.9 and 56.4 nmol/l to 36.1 and 28.1 nmol/l, after 1 week"s treatment and to 11.1 and 7.1 nmol/l after 4 weeks respectively. Danazol sex hormone binding globulin Homo sapiens
3 Despite the similarity between the falls in SHBG binding capacity there was a significantly greater increase in % free testosterone in plasma samples from patients treated with danazol than in those from patients treated with gestrinone at 1 week. Danazol sex hormone binding globulin Homo sapiens
4 Experiments in vitro suggest that this was largely due to ethisterone (a major metabolite of danazol) competing with testosterone for SHBG binding sites. Danazol sex hormone binding globulin Homo sapiens