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人绒毛膜促性腺激素(hCG),人胎盘催乳素(hPL),妊娠特异的β_1糖蛋白(SP_1)以及胎盘蛋白5(PP5)都是胎盘滋养叶的正常产物。但是,有证据表明,它们并非仅由胎盘产生。如在正常睾丸中也鉴定出有 hCG。最近,在人精浆中发现与PP5非常类同的物质。本文用放射免疫分析法测定了正常男人和精子产生有缺陷患者精浆中 hCG,hPL,SP_1及 PP5的浓度。从20例精子计数正常的对照受试者和21例精子
Human chorionic gonadotropin (hCG), human placental lactogen (hPL), pregnancy-specific β_1 glycoprotein (SP_1), and placental protein 5 (PP5) are all normal products of placental trophoblast. However, there is evidence that they are not produced solely by the placenta. As in normal testes also identified hCG. Recently, very similar substances to PP5 have been found in human seminal plasma. In this paper, the concentrations of hCG, hPL, SP 1 and PP 5 in seminal plasma of normal and sperm-producing patients were determined by radioimmunoassay. From 20 normal sperm count control subjects and 21 sperm