天津市90例孕妇、新生儿维生素A和维生素E的营养状况

于1984年5月至1985年2月追踪研究了天津市90例正常孕妇妊娠中、后期母血、分娩时脐血维生素A(VA)、维生素E(VE)水平及有关因素。结果表明,妊娠中、后期孕妇血清VA、VE浓度均显著高于非孕妇,并随着妊娠的进展呈进行性上升,孕中、后期母血VA的平均浓度分别是非孕妇的1.7倍和1.8倍(非孕妇为39.9μg/dl),VE的平均浓度分别是非孕妇的1.2倍和1.8倍(非孕妇为10μg/ml)。孕妇血VE水平与血胆固醇水平呈高度正相关。初乳VA平均含量为117.8μg/dl。脐血VA和VE的平均浓度均显著低于母血,分別是孕后期母血浓度的1/3和1/5。

STUDIES OF VITAMIN A AND VITAMIN E STATUS OF 90 PREGNANT WOMEN AND THEIR NEWBORNS IN TIANJIN

The serum vitamin A, vitamin E and some related indexes were determined in 90 primigravidas of the 2nd and the 3rd trimesters, their newborns and 30 non-pregnant women. The mean serum VA and VE contents of non-pregnant women were 39.9 μg/dl and 10.3 μg/ml respectively. Both the contents increased progressively with the advancement of pregnancy. The serum VA levels of pregnant women in the 2nd and the 3rd trimesters were 1.7 and 1.8 times as much as those of non-pregnant women respectively, and the serum VE levels were 1.2 and 1.8 times. The cord blood VA and VE levels were 22.3 μg/dl and 3.36 μg/ml respectively and both were lower than those of their mothers significantly. The colostrum VA content of these pregnant women was also determined and the mean VA content of colostrum was 117.8