Placental Delivery of Amino Acids. Utilization and Production vs. Transport
نویسنده
چکیده
Early studies of amino acid transport across the ovine placenta suggested that amino acids taken up by the placenta from the maternal circulation are delivered to the fetus with no major loss (placental amino acid utilization) or addition (placental amino acid production) (1). Recent data indicate that for some amino acids, this suggestion is not valid, and that amino acid metabolism is an important aspect of placental function. The new information is based on several lines of evidence.
منابع مشابه
Production and utilization of amino acids by ovine placenta in vivo.
Uterine and umbilical uptakes of plasma amino acids were measured simultaneously in eighteen singleton pregnant ewes at 130 ± 1 days gestation for the purpose of establishing which amino acids are produced or used by the uteroplacenta under normal physiological conditions and at what rates. The branched-chain amino acids (BCAA) had uterine uptakes significantly greater than umbilical uptakes. N...
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