Koskinen T, Rinkari S, Tuimala R, Punnonen R
Ann Chir Gynaecol Suppl. 1985;197:51-3.
Vitamin A and vitamin E concentrations were measured in 27 umbilical arterial and venous plasma samples obtained from 24 singleton pregnancies and one triplet pregnancy. The levels of both vitamins were similar in arterial and venous plasma (mean +/- S.D. vitamin A 209 +/- 41 micrograms/l and 220 +/- 51 micrograms/l; vitamin E: 2.31 +/- 0.74 mg/l and 2.31 +/- 0.76 mg/l, respectively), but individual differences were observed in some cases. A significant relationship (p less than 0.001) existed between the arterial and venous levels of both vitamins. However, when arterial vitamin A levels were plotted against venous levels, the slope of the regression line (0.61) was significantly (p less than 0.01) different from unity, which suggests that the placental transfer or fetal storage has an effect on the arterial-venous ration of this vitamin. The vitamin A values from the triplet pregnancy were quite low, but comparable with each other.
对从24例单胎妊娠和1例三胎妊娠中获取的27份脐动脉和脐静脉血浆样本进行了维生素A和维生素E浓度测定。两种维生素在动脉血浆和静脉血浆中的水平相似（维生素A均值±标准差：分别为209±41微克/升和220±51微克/升；维生素E：分别为2.31±0.74毫克/升和2.31±0.76毫克/升），但在某些情况下观察到个体差异。两种维生素的动脉血和静脉血水平之间存在显著相关性（p<0.001）。然而，当将动脉维生素A水平与静脉水平进行绘制时，回归线的斜率（0.61）与1显著不同（p<0.01），这表明胎盘转运或胎儿储存对该维生素的动静脉比值有影响。三胎妊娠的维生素A值相当低，但相互之间具有可比性。
