Noretisteron: Perbedaan antara revisi
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[[File:Hormone levels in men with a single intramuscular injection of 5 mg estradiol valerate and 50 mg norethisterone enanthate in oil.png|thumb|right|450px|Tingkat hormon setelah suntikan intramuskular tunggal estradiol valerat/noretisteron enantat (5 mg/50 mg) pada pria muda yang sehat. Kadar testosteron ditekan secara maksimal sekitar 94% hingga ~30 ng/dL, bila diukur pada hari ke 7 pasca injeksi.<ref name="ValleAlvarez2011" />]]
Suntikan NETE intramuskular 200 mg tunggal atau dalam kombinasi dengan 2 mg [[estradiol valerat]] telah terbukti menghasilkan penurunan kadar [[gonadotropin]] dan testosteron yang cepat, kuat, dan berkelanjutan hingga satu bulan pada pria.<ref name="KamischkeNieschlag2004" /><ref name="Amory2003">{{cite book| vauthors = Amory JK |title=Androgens in Health and Disease |chapter=Androgens and Male Contraception |series=Contemporary Endocrinology |year=2003|pages=405–417|publisher=Humana Press |doi=10.1007/978-1-59259-388-0_21|isbn=978-1-61737-314-5}}</ref><ref name="pmid10971453">{{cite journal | vauthors = Kamischke A, Diebäcker J, Nieschlag E | title = Potential of norethisterone enanthate for male contraception: pharmacokinetics and suppression of pituitary and gonadal function | journal = Clinical Endocrinology | volume = 53 | issue = 3 | pages = 351–358 | date = September 2000 | pmid = 10971453 | doi = 10.1046/j.1365-2265.2000.01097.x | s2cid = 70515136 }}</ref> Suntikan NETE 200 mg intramuskular setiap 3 minggu sekali juga terbukti menekan spermatogenesis pada pria.<ref name="pmid793446">{{cite journal | vauthors = Neumann F, Diallo FA, Hasan SH, Schenck B, Traore I | title = The influence of pharmaceutical compounds on male fertility | journal = Andrologia | volume = 8 | issue = 3 | pages = 203–235 | date = 1976 | pmid = 793446 | doi = 10.1111/j.1439-0272.1976.tb02137.x | s2cid = 24859886 | doi-access = free }}</ref><ref name="PetryMauss1970">{{cite book| vauthors = Petry R, Mauss J, Senge T, Rausch-Stroomann JG |title=Über den Einfluß von Cyproteronacetat, Norethisteronönanthat und Gestonoroncapronat auf die Hypophysen-Gonadenachse beim Mann|chapter=Influence of Cyproterone-acetate, Norethisterone-enanthate and Gestonorone-capronate on the Hypophyseal-Gonadal-Axis in the Male |trans-title=Influence of Cyproterone-acetate, Norethisterone-enanthate and Gestonorone-capronate on the Hypophyseal-Gonadal-Axis in the Male|year=1970|pages=428–430|doi=10.1007/978-3-642-80591-2_118|journal=Endokrinologie der Entwicklung und Reifung|series=Symposion der Deutschen Gesellschaft für Endokrinologie in Ulm vom 26.—28. Februar 1970 |publisher=Springer |isbn=9783642805912 }}</ref> Demikian pula, suntikan intramuskular tunggal 50 mg NETE yang dikombinasikan dengan 5 mg estradiol valerat terbukti sangat menekan kadar testosteron pada pria.<ref name="ValleAlvarez2011">{{cite thesis | type = MSc | vauthors = Alvarez BD | title = Efecto de una Dosis de 50 mg de Enantato de Noretisterona y 5 mg de Valerato de Estradiol en los Niveles de Testosterona Total en Hombres Mexicanos Sanos | trans-title = Effect of a Dose of 50 mg of Norethisterone Enanthate and 5 mg of Estradiol Valerate on Total Testosterone Levels in Healthy Mexican Men | date = 11 May 2011 | publisher = National Polytechnic Institute of Mexico | url = http://repositoriodigital.ipn.mx/handle/123456789/12490 | access-date = 12 September 2022 | archive-date = 16 September 2022 | archive-url = https://web.archive.org/web/20220916063742/https://repositoriodigital.ipn.mx/handle/123456789/12490 | url-status = live }}</ref> Kadar testosteron menurun dari ~503 ng/dL pada awal menjadi ~30 ng/dL pada titik terendah (–94%) yang terjadi pada hari ke 7 pasca injeksi.<ref name="ValleAlvarez2011" />
===Farmakokinetik===
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