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Clin Endocrinol (Oxf) ; 53(3): 351-8, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-10971453

RESUMO

OBJECTIVE: Gestagens are known to suppress gonadotrophins in women and are currently also under investigation for the development of hormonal male contraceptives. The aim of the study was to assess the potential of norethisterone enanthate (NETE) for male contraception. DESIGN AND MEASUREMENTS: The suppressive effect of a single injection of 200 mg NETE on serum gonadotrophins, serum testosterone, lipids, spermatogenesis, well-being and sexual function was evaluated in seven healthy men. RESULTS: In this single dose study treatment was well tolerated by all volunteers. NETE led to a rapid, profound and significant suppression of serum LH (day 6 - day 10), FSH (day 2 - day 29), testosterone (day 1 - day 29 and day 35) and SHBG (day 6 - day 35). At study end sperm counts were significantly suppressed. Numbers of spontaneous erections (day 17, 23 and 26), number of sexual fantasies (day 20 and 23) as well as libido (day 20 and 26) were significantly decreased compared to baseline. All other parameters including lipids, augmented glucose, testicular volume and well-being showed no significant alterations. CONCLUSION: Because of its strong, rapid and sustained suppression of serum FSH and testosterone norethisterone enanthate offers great potential for hormonal male contraception if combined with testosterone esters.


Assuntos
Anticoncepcionais Masculinos/farmacologia , Noretindrona/análogos & derivados , Hipófise/efeitos dos fármacos , Testículo/efeitos dos fármacos , Adulto , Análise de Variância , Depressão Química , Humanos , Libido/efeitos dos fármacos , Hormônio Luteinizante/sangue , Masculino , Noretindrona/farmacologia , Próstata/diagnóstico por imagem , Globulina de Ligação a Hormônio Sexual/análise , Sexualidade/efeitos dos fármacos , Contagem de Espermatozoides/efeitos dos fármacos , Testículo/diagnóstico por imagem , Testosterona/sangue , Ultrassonografia
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