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  • Title: Serum lecithin: cholesterol acyltransferase activity and HDL2 and HDL3 composition in small for gestational age newborns.
    Author: Merzouk H, Lamri MY, Meghelli-Bouchenak M, Korso N, Prost J, Belleville J.
    Journal: Acta Paediatr; 1997 May; 86(5):528-32. PubMed ID: 9183494.
    Abstract:
    The aim of this study was to determine serum lecithin: cholesterol acyltransferase (LCAT) activity in parallel with HDL2 and HDL3 composition in cord sera of small for gestational age (SGA) newborns, and to compare them with those obtained from appropriate for gestational age (AGA) newborns. LCAT activity was assayed by conversion of [3H]cholesterol to labelled cholesteryl ester. HDL2 and HDL3 were separated by ultracentrifugation. Serum cholesteryl ester, apolipoprotein (apo) A-I concentrations and LCAT activity were significantly lower (-47%, -18% and -56%, respectively), whereas serum triglyceride amounts were twofold higher in SGA newborns than in AGA newborns. In SGA newborns, HDL2 and HDL3 levels were low, and HDL3 and HDL2 phospholipid and HDL2-cholesteryl ester contents were diminished. HDL3-apo A-I, A-II, C-III and E values were lower in SGA newborns. In HDL2, apo A-I, A-II and E concentrations were decreased. Therefore, in SGA newborns, the reduced LCAT activity was associated with quantitative and qualitative changes in HDL2 and HDL3 particles.
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