The pattern of major serum apolipoproteins during the early neonatal period.

Serum triglycerides, total cholesterol, lipoproteins and apolipoprotein A-I, B and C-III were investigated in 24 normal newborns at birth (umbilical cord blood) and again 4 days after birth (venous blood). Blood samples from 95 fasted normolipidemic male and female subjects aged between 20 to 60 years were also analysed. Immunochemical studies of serum from umbilical cord blood have shown that all investigated apolipoproteins were present although at lower levels than found in adults. The concentration of lipids, lipoproteins and apolipoprotein B and C-III in the serum from blood collected 4 days after birth did not practically differ from that of adult.