[Hyperlipidemias and abnormalities in the electrophoresis of lipoproteins. Incidence in newborn infants].

We studied 300 newborns in whom total cholesterol, cholesterol of low density lipoproteins, triglycerides and lipoprotein electrophoresis were determined in umbilical cord blood. Pure hypercholesterolemia was found in 14 cases (4.7%), hypertriglyceridemia in 15 cases (5.0%) and increase in cholesterol and triglycerides in 4 cases (1.3%). Lipoprotein electrophoresis showed increase in betas in 23 cases (7.6%), prebetas in 24 (8.0%) and in both, betas and prebetas, in 6 cases (2.0%). Betas /alphas index was always found elevated when other electrophoretic fractions had some abnormality.