Manganese (Mn), selenium (Se) and glutathione peroxidase (GPX) levels were determined in 56 paired samples of maternal and cord blood plasma at birth in both term and preterm pregnancies. Correlations existed between maternal and newborn plasma levels for Se, but not for Mn or GPX. Values of Mn, Se and GPX were all greater in the term than the preterm infant. Levels of Mn were greater in the pregnant than the non-pregnant woman, but levels of Se and GPX were lower during pregnancy.
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