Unconjugated Estradiol, Estriol and Total Estriol in Maternal Peripheral
Endocrinol. Japon. 1983, 30 (2), 155-162 Unconjugated Estradiol, Estriol and Total Estriol in Maternal Peripheral Vein, Cord Vein, and Cord Artery Serum at Delivery in Pregnancies with Intrauterine Growth Retardation. CHIKAYUKI, TAYAMA, SHUNZO ICHIMARU, MASAHARU ITO, MICHIO NAKAYANA, MASAO MAEYAMA AND ISAO MIYAKAWA Department of Obstetrics and Gynecology, Kumamoto University Medical School, Kumamoto 860 and *Department of Obstetricts and Gynecology, Miyazaki Medical College, Miyazaki Abstract The levels of unconjugated estradiol(E2), estriol (E3) and total (conjugated plus unconjugated) E3 in maternal vein serum during labor, cord vein serum, and cord artery serum were measured in normal singleton and twin pregnanceis with appropriate for dates babies (AFD) and with light for dates babies (LFD). The mean level of total E3 in the maternal vein serum in singleton pregnancy was significantlylower in the LFD group than in the AFD group, but no differenceswere seen in the mean levels of unconjugated E2 or E3 between the groups. The concentration of uncon- jugated E2 in the maternal vein serum was significantlyhigher in the twin group with a large placenta than in the singleton group with a small placenta, while the concentration of total E3 in the case of twin pregnancy with LFD was lower than that in singleton pregnancy with AFD but not significantly. No difference in the concentration of total E3 was observed between the cord vein serum and cord artery serum. The present data suggest that the total E3 level in maternal vein serum may be used in evaluating fetal states such as intrauterinegrowth retardation. In pregnancy complicated by intrauterine conjugated E2 and E3 into the maternal and growth retardationwith or without symptoms fetal circulation and to determine the total of maternal disease,such as toxemia of pre- (conjugated plus unconjugated) E3 in the gnancy or hypertension,not only the urinary maternal and fetal blood.
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