Soveri P, Fyhrquist F, Widholm O
Am J Obstet Gynecol. 1975 Feb 15;121(4):559-62. doi: 10.1016/0002-9378(75)90092-7.
Plasma renin activity (PRA) in umbilical cord blood exceeded that of maternal blood in 14 out of 20 cases. Fetal PRA was not significantly correlated to maternal PRA. Significantly higher fetal renin values than the corresponding maternal ones were restricted to shorter labor (N equals 10). In cases with uterine inertia (N equals 8) higher values than in normals (N equals 7) were observed, whereas suppressed maternal and cord blood levels were found in maternal fluid retention with edema (N equals 3). The data suggest that fetal production of renin may be largely independent of maternal renin secretion.
20例中有14例脐带血中的血浆肾素活性（PRA）超过母血中的血浆肾素活性。胎儿PRA与母体PRA无显著相关性。胎儿肾素值显著高于相应母体肾素值的情况仅限于产程较短的病例（n = 10）。在子宫收缩乏力的病例中（n = 8），观察到其肾素值高于正常情况（n = 7），而在伴有水肿的母体液体潴留病例中（n = 3），母体和脐带血中的肾素水平则受到抑制。这些数据表明，胎儿肾素的产生可能在很大程度上独立于母体肾素的分泌。
