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  • Title: Maternal-fetal n-6 and n-3 polyunsaturated fatty acids gradient in plasma and red cell phospholipids.
    Author: Min Y, Ghebremeskel K, Crawford MA, Nam JH, Kim A, Lee IS, Suzuki H.
    Journal: Int J Vitam Nutr Res; 2001 Sep; 71(5):286-92. PubMed ID: 11725693.
    Abstract:
    Fatty acid distribution was investigated in ethnically and economically homogenous Korean mothers (n = 40) and neonates. Venous blood, maternal before delivery and cord, was obtained. Choline (CPG) and ethanolamine (EPG) phosphoglycerides and sphingomyelin (SM) were assayed. Mean arachidonic acid (AA) level was higher in plasma CPG and SM (p < 0.0001), and red cell CPG (p < 0.0001), EPG (p < 0.0001) and SM (p = 0.005) of the neonates. Similarly, the neonates had higher proportions of docosahexaenoic acid (DHA) in plasma CPG (p < 0.0001) and red cell CPG (p = 0.001) and EPG (p = 0.036). In contrast, linoleic and alpha-linolenic acids were significantly higher in maternal blood. Mead acid was elevated in plasma CPG (p < 0.0001) and red cell CPG and EPG (p < 0.0001) of the neonates. Consistent with data from high-fat-intake populations, our subjects, whose traditional diet is low in fat, exhibited maternal-fetal gradient in AA and DHA in plasma and red cell phospholipids. This may be due to an imbalance between supply and maternal and fetal requirements, and/or a physiological response to pregnancy. Prenatal nutritional constraint is associated with impaired development and a risk of chronic diseases in adults. AA and DHA are vital nutrients. Hence, there is a need to investigate whether the discrepancy between maternal and neonatal AA and DHA is a manifestation of nutritional insufficiency.
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