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作者等与中国预防医学科学院营养与食品卫生研究所合作,对全国8个地区的3782名孕妇,乳母进行了膳食调查,及锌、铜营养状况评价。调查结果表明,8地区的孕妇、乳母都普遍存在锌摄入量严重不足,其60～70％人锌的日摄入量仅为RDA的1/3～2/3(6.3～13mg)。(正常孕妇日摄入锌量为20mg)。从本文的调查结果可见,孕妇血清锌呈进行性下降,而羊水锌浓度,产期比孕中期增高3倍,说明了胎儿生长发育需要大量锌。本次调查血清铜/锌比值随孕期逐渐增高(孕妇组为1.12±0.61,产妇组为2.61±0.02)。新生儿出生体重与产妇血清及新生儿脐血中铜/锌比值皆高度负相关。
The author, in cooperation with the Institute of Nutrition and Food Hygiene, Chinese Academy of Preventive Medicine, conducted a dietary survey of 3,782 pregnant women and nursing mothers in 8 districts in the country, and evaluated the nutritional status of zinc and copper. The survey results showed that pregnant women and nursing mothers in all 8 regions are seriously deficient in zinc intake. Their daily intake of 60-70% zinc is only 1 / 3-2 / 3 (6.3-13 mg) of RDA. (Normal pregnant women daily intake of zinc was 20mg). Seen from the findings of this article, serum zinc in pregnant women showed a progressive decline, while the concentration of amniotic fluid zinc, three times higher than the third trimester, indicating that the fetus needs a lot of zinc growth and development. The serum copper / zinc ratio of this survey gradually increased with pregnancy (pregnant women group was 1.12 ± 0.61, maternal group was 2.61 ± 0.02). Neonatal birth weight and maternal serum and neonatal cord blood copper / zinc ratio are highly negative correlation.