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男性不妊症睪丸減數分裂之研究-初報

Meiotic Study of Infertility in Men – A Preliminary Report

摘要


男性不妊症之原因很多,精子形成(spermatogenesis)之各時期及精蟲成型(spermiogenesis)皆可使精子之質及量改變,而導致不妊或早期流產。本文報告,10個男性不妊症病人睪丸染色體在精蟲成熟過程中各時期之病變。結果顯示雖然臨床上同屬精蟲減少或無精蟲症,但每人有不同或不同程度之染色體之病變,因此在治療上也應有不同的方針及策略。但此檢查技術上可能較難,須要仔細檢查,方可有高機率之結果。

並列摘要


The meiotic study of spermatocytes may provide important information for the underline cause of male infertility, many of which originate from meiotic errors, especially during early stages of meiosis. Spermatocytes from nine infertile men and one vesectomied man, age 23 to 43 years, were analyzed. All, except one, had normal levels of gonadotropic and sex hormones, and regular size of testes. One patient had no meiosis. Four showed azoospermia and 5 were oligospermia. Abnormal meiotic behaviors including pairing irregularities such as defective pairing of sex chromosomes, absence of sex vesicle, complete or partial nonpaired homologous chromosomes at pachytene and DK/MI, univalents ad MII, and complete or partial spermatic arrest were observed. Supernumerary chromosome was detected in one patient. The vasectomied patient also displayed spermatic arrest with few meiotic errors in the early stages. The results indicated that infertilemen could reveal different underline cause with unique meiotic abnormalities.

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