Abstract
During a longitudinal study erythrocyte superoxide dismutase activity (SOD) was sptctrophotometrically measured in 65 full ters AGA (mean birthweight 3080±235 g. and mean gestational age 39.0±0.9 weeks) and 65 LBW AGA (mean birthweight 1585±247 g. and mean gistational a 34.1±1.7 weeks) infants at different postnatal age Red cells zinc and copper concentrations were also measured by atomic absorption in order to explore their relations to SOD activity. The results are reported in table I. Erythrocyte SOD activity and Zn, Cu concentrations were lower in LBW than in full term infants (P<0.05). This difference was not present <200 days of postnatal age. A significant correlation between SOD activity seems to be particularly influenced by Cu concentration. A different role of these two trace elements in activity of this enzyme is suggested.
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