Plasma apolipoprotein concentrations in young adults with a parental history of premature coronary heart disease and in control subjects. The EARS Study. European Atherosclerosis Research Study.

The European Atherosclerosis Research Study (EARS) is a multicenter collaborative project within the European community. Its main objective is to study in young individuals the biological expression of a paternal history of premature coronary heart disease and to analyze the relative contribution of genetic and environmental factors to this expression. This study was carried out in 14 centers in 11 European countries, where the offspring of fathers who suffered a documented myocardial infarction before the age of 55 years (cases) were compared with age- and sex-matched control subjects. Plasma apolipoproteins A-I, B, A-II, A-IV, and E and lipoprotein (Lp) A-I lipoparticles were measured in this student population. Comparison of the values between cases and control subjects showed significantly higher apo B levels in cases compared with control subjects, and these differences were homogeneous throughout Europe. Regional differences were observed for apo E levels with an increasing north-south gradient, which was inversely related to that observed for triglycerides. A stepwise regression analysis including the lipid and apolipoprotein variables showed that apo B and triglycerides were the strongest discriminators between offspring of fathers with premature coronary heart disease and control subjects.

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