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    Male hormonal contraception: effects of injections of testosterone undecanoate and depot medroxyprogesterone acetate at eight-week intervals in chinese men

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    JCEM_2004_Male_Hormonal_Contraception.pdf (173.2Kb)
    Date
    2004-05
    Author
    Wang, Xing-Hai
    Bremner, William J.
    Ma, Ding-Zhi
    Tang, Wen-Hao
    Yuan, Dong
    Gu, Yi-Qun
    Tong, Jian-Sun
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    Abstract
    Surveys indicate that one form of acceptable male hormonal contraception would consist of injections given at 2- to 3-month intervals. This report describes a study of depot medroxyprogesterone acetate (DMPA) and testosterone undecanoate (TU) injected at 8-wk intervals for suppression of spermatogenesis in healthy Chinese men. After screening, 30 healthy volunteers were enrolled and randomly assigned to one of three dose groups (n = 10/group): 1000 mg TU (group A); 1000 mg TU plus 150 mg DMPA (group B); 1000 mg TU plus 300 mg DMPA (group C). All doses were given as im injections at 8-wk intervals. The study consisted of an 8-wk control (baseline) period, a 24-wk treatment period, and a 24-wk recovery period. Consistent azoospermia or severe oligozoospermia was achieved and maintained in all volunteers during the treatment period, except for two men in the TU-alone group who experienced a rebound in sperm concentrations. An 8-wk regimen of TU plus DMPA at both tested combination doses effectively suppressed spermatogenesis to azoospermia in Chinese men. All volunteers tolerated the injections; no serious adverse effects were reported. The lower-dose combination is recommended for further testing in an expanded clinical trial or contraceptive efficacy study.
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    http://hdl.handle.net/1773/4425
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