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1 妊娠对母体代谢和营养环境对胎儿发育的影响 1.1 妊娠对母体代谢的影响在妊娠前半期,母体的体重迅速增加,这是内脏(如肝脏)增大和脂肪沉积增加所致。同时,随着胎儿的生长,其重量亦逐渐增加,两者的增长速度平行。在妊娠后半期,胎儿继续生长,重量继续增加,而母体因脂肪消耗而体重下降。妊娠引起的体重增加到分娩前约为12kg,体重指数(BMI)约为25kg/m~2。在妊娠早期,脂蛋白脂酶(LPL)活性增强,促使葡萄糖转化为脂肪,由葡萄糖转化为甘油三脂(Tg)和
1 pregnancy on the maternal metabolic and nutritional environment on the impact of fetal development 1.1 pregnancy on the impact of maternal metabolism in the first half of pregnancy, the mother of the rapid increase in body weight, which is the viscera (such as the liver) and increased fat deposition due to increased. At the same time, with the growth of the fetus, its weight has also gradually increased, the growth rate of both parallel. In the second half of pregnancy, the fetus continues to grow, the weight continues to increase, while the mother lost weight due to fat consumption. Weight gain due to pregnancy increased to about 12kg before delivery, body mass index (BMI) of about 25kg / m ~ 2. In the first trimester of pregnancy, lipoprotein lipase (LPL) activity is enhanced, leading to the conversion of glucose to fat, glucose to triglyceride (Tg) and