Affiliation:
1. Physical Activity Sciences Laboratory, Laval University, Ste-Foy, Québec, Canada.
Abstract
The contribution of genetic and environmental factors in serum triglycerides (TG), total cholesterol (CHOL), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), and HDL-C/CHOL ratio were studied in 1630 subjects from 375 families of French descent by using a path analysis procedure. Familial correlations were computed in several pairs of biological relatives and relatives by adoption after adjustment for age and gender effects and after further adjustment for physical fitness, level of habitual physical activity, total body fat and fat distribution, diet, smoking, and alcohol consumption. The model of path analysis allowed the separation of transmissible variance (t2) into genetic (h2) and cultural (b2) components of inheritance. Under the most parsimonious solution and after adjustment for age, gender, and concomitants, the transmissible variance was entirely accounted for by genetic factors (t2 = h2), with h2 estimates of 0.52, 0.55, 0.60, and 0.63 for TG, CHOL, LDL-C, HDL-C, and HDL-C/CHOL, respectively. These estimates were similar to those obtained after adjustment for age and gender effects only. The contribution of nontransmissible environmental factors ranged from 0.48 for TG to 0.37 for HDL-C/CHOL ratio. These results suggest that both genetic and environmental factors contribute to the variation in blood lipids and lipoproteins in this population and that nongenetic influences are not associated with cultural factors transmitted across generations.
Publisher
Ovid Technologies (Wolters Kluwer Health)
Subject
Cardiology and Cardiovascular Medicine
Reference82 articles.
1. Genetic epidemiology of coronary heart disease. Past, present and future. Progress in clinical and biological research, vol 147;Rao DC;New York: Alan R. Uss Inc.,1984
2. The association of total cholesterol, triglycerides and plasma lipoprotein cholesterol levels in first degree relatives and spouse pairs;Garrison JR;Am J Epidemiol,1979
3. The Columbia Population Study. II. FamiBal aggregation of plasma cholesterol and trigtycerldes;Chase GA;Johns Hopkins Med J,1979
4. Sibling correlations and genetic estimates for selected blood variables in French Canadian children
5. The muscatine cholesterol family study: Familial aggregation of blood lipids and relationship of lipid levels to age, sex and hormone use
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