Hughes I A, Riad-Fahmy D, Griffiths K
Arch Dis Child. 1979 May;54(5):347-9. doi: 10.1136/adc.54.5.347.
Plasma concentrations of 17OH-progesterone were determined in 60 normal newborn infants aged between 3 and 36 hours. Mean levels decreased rapidly during this time after removal of the placental contribution of this steroid. A further 70 normal infants, studied between ages 2 and 7 days, showed a mean plasma 17OH-progesterone concentration of 3.5 nmol/1 (1.2 ng/ml). By comparison, plasma concentrations in untreated infants with congenital adrenal hyperplasia were markedly raised. At 36 hours of age, there was an obvious difference between plasma levels of this steroid in normal and affected infants. Determination of plasma 17OH-progesterone concentrations are valuable in the evaluation of disorders of sexual differentiation and electrolyte balance in newborn infants, provided due care is given to the timing of sample collections.
测定了60名年龄在3至36小时之间的正常新生儿的血浆17-羟孕酮浓度。在去除该类固醇的胎盘来源后,这段时间内平均水平迅速下降。另外70名年龄在2至7天之间的正常婴儿,其血浆17-羟孕酮平均浓度为3.5 nmol/1(1.2 ng/ml)。相比之下,未经治疗的先天性肾上腺皮质增生症婴儿的血浆浓度明显升高。在36小时龄时,正常婴儿和患病婴儿的该类固醇血浆水平存在明显差异。只要对样本采集时间给予适当注意,测定血浆17-羟孕酮浓度对于评估新生儿性分化和电解质平衡紊乱很有价值。