Umbilical uptakes and transplacental concentration ratios of amino acids in severe fetal growth restriction
نویسندگان
چکیده
منابع مشابه
Umbilical uptake of amino acids in the unstressed fetal lamb.
The whole blood concentrations of 22 amino acids were measured in a chronic, unstressed fetal lamb preparations. Samples were taken daily from the umbilical artery, umbilical vein, and maternal artery over the latter quarter of gestation. 73 sets of samples (from the umbilical artery and vein and the maternal artery) from 13 animals were analyzed for amino acid levels. Oxygen contents were dete...
متن کاملRegulation of uterine and umbilical amino acid uptakes by maternal amino acid concentrations.
We tested the hypothesis that decreased fetal amino acid (AA) supply, produced by maternal hypoaminoacidemia (low AA) during hyperglycemia (HG), is reversible with maternal AA infusion and regulates fetal insulin concentration ([I]). We measured net uterine and umbilical AA uptakes during maternal HG/low AA concentration ([AA]) and after maternal intravenous infusion of a mixed AA solution. Aft...
متن کاملPlacental Amino Acids Transport in Intrauterine Growth Restriction
The placenta represents a key organ for fetal growth as it acts as an interface between mother and fetus, regulating the fetal-maternal exchange of nutrients, gases, and waste products. During pregnancy, amino acids represent one of the major nutrients for fetal life, and both maternal and fetal concentrations are significantly different in pregnancies with intrauterine growth restriction when ...
متن کاملSevere Fetal Distress and Umbilical Cord Strangulation
We describe an extreme case of amniotic band syndrome, presented with fetal stress during labor and associated with strangulation of umbilical cord.
متن کاملFetoplacental biometry and umbilical artery Doppler velocimetry in the overnourished adolescent model of fetal growth restriction.
OBJECTIVE The purpose of this study was to evaluate ultrasonographically fetal growth trajectories, placental biometry, and umbilical artery (UA) Doppler indices in growth-restricted pregnancies of overnourished adolescent ewes and normally developing pregnancies of control-fed ewes. STUDY DESIGN Singleton pregnancies were established using embryo transfer in 42 adolescent ewes that were over...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 2013
ISSN: 0031-3998,1530-0447
DOI: 10.1038/pr.2013.30