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人所共知,胎儿性腺机能存在着性别的差别,即男孩在胎龄10周左右睾丸中、血睾丸酮(T)浓度的增加与hCG分泌的高峰一致,而女孩未发现明显的卵巢性睾丸酮产生。许多报告认为,男胎血T浓度在妊娠后期减少,妊娠末期脐带血T浓度则无性别差异。本文以32～41周分娩的婴儿为对象,106名婴儿(男52,女54)娩出后立即取脐静脉血,104名(男39,女65)于出生后5～30日逐日取末梢静脉血,用放射免疫测定法测定T浓度,研究了新生儿出生后每日血T的浓度,并进一步进行早产
It is well known that there is a gender difference in fetal gonadal function in that the increase in serum testosterone (T) concentration is consistent with the peak of hCG secretion in the testis at about 10 weeks of gestational age in boys, whereas no significant ovarian testosterone production is found in girls . Many reports suggest that male fetus blood T levels are reduced during the second trimester of pregnancy and there is no gender difference in cord blood T concentrations at the end of pregnancy. In this paper, 32 to 41 weeks of delivery of infants as the object, 106 infants (male 52, female 54) immediately after delivery of umbilical cord blood taken, 104 (39 men and 65 women) 5 to 30 days after birth take the peripheral vein Blood, T radioimmunoassay was used to determine the concentration of T, the daily blood T concentration after birth was studied, and further preterm birth