Parkinson CE, Tan JC, Gal I. Vitamin A concentration in amniotic fluid and maternal serum related to neural-tube defects.
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY 1982;
89:935-9. [PMID:
6184067 DOI:
10.1111/j.1471-0528.1982.tb05061.x]
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Abstract
The vitamin A concentration of amniotic fluid and maternal serum was measured during the second trimester of pregnancy in 106 women, 12 of whom had a baby with a neural-tube defect. In these 12 pregnancies the amniotic fluid vitamin A concentration was significantly higher than in 94 normal pregnancies. There was a highly significant correlation between amniotic fluid vitamin A and both zinc and alpha-fetoprotein (AFP) levels. The maternal serum vitamin A levels were also significantly related to serum zinc levels. Women with a raised serum AFP level, but a normal baby, had significantly higher amniotic fluid vitamin A levels and significantly lower serum vitamin A levels compared with those in women with normal serum AFP levels.
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