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J Lipid Res. 1992 Apr;33(4):447-54.

Modulation of plasma triglyceride levels by apoE phenotype: a meta-analysis.

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  • 1Hyperlipidemia and Atherosclerosis Research Group, Clinical Research Institute of Montreal, Quebec, Canada.


The relationship between apoE phenotype and plasma lipid levels was analyzed in the combined data of published studies. Accordingly, 45 population samples from 17 different countries were included in the analysis. The mean plasma values of cholesterol (CH), triglyceride (TG), and high density lipoprotein (HDL)-CH of the apoE 2/2, 3/2, 4/3, 4/4, and 4/2 groups were compared with the same parameters of the E 3/3 subset. The standardized difference between the plasma lipid concentrations of the apoE subgroups and of their respective apoE 3/3 control (Z-score), as well as their mean weighted value, were calculated for each study and in each subgroup. The analysis confirmed that subjects carrying the epsilon 2 and epsilon 4 alleles had, respectively, lower (Z2/2 = -0.39, Z3/2 = -0.34) and higher (Z4/3 = 0.15, Z4/4 = 0.29) plasma cholesterol values than subjects carrying the epsilon 3/epsilon 3 genotype. In addition, results indicated a consistent relationship between plasma TG levels and apoE phenotype among different populations. TG concentrations were significantly higher in apoE 2/2, 3/2, 4/3 and E 4/2 than in E 3/3 subsets (Z2/2 = 0.42, Z3/2 = 0.14, Z4/3 = 0.13, Z4/2 = 0.19). Further, this trend was found in samples of normolipidemic adults and children, in diabetic and obese individuals, as well as in hyperlipidemic subjects indicating an ubiquitous relationship. Concurrently, HDL-CH was significantly lower in the apoE 4/3 (Z4/3 = -0.09) than in the E 3/3 subset.(ABSTRACT TRUNCATED AT 250 WORDS)

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