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  • Title: Heterogeneity at the CETP gene locus. Influence on plasma CETP concentrations and HDL cholesterol levels.
    Author: Kuivenhoven JA, de Knijff P, Boer JM, Smalheer HA, Botma GJ, Seidell JC, Kastelein JJ, Pritchard PH.
    Journal: Arterioscler Thromb Vasc Biol; 1997 Mar; 17(3):560-8. PubMed ID: 9102177.
    Abstract:
    This study was designed to investigate the association(s) between heterogeneity at the cholesteryl ester transfer protein (CETP) gene locus, CETP plasma concentrations, and HDL cholesterol levels. Healthy men with the lowest, median, and highest deciles of HDL cholesterol were selected from a large population database. We accounted for factors that are known to influence HDL cholesterol levels, such as smoking, exercise, body mass index, alcohol consumption, and blood pressure. Plasma CETP concentrations were measured, and we determined the allele frequency distribution of six CETP DNA polymorphisms. The group with low HDL cholesterol exhibited a significant increase in CETP concentration compared with both the median and high HDL cholesterol groups, whereas CETP concentrations did not differ among the groups with median and high HDL cholesterol. The allele frequency distributions of the TaqIB (intron 1), Msp I (intron 8), and Rsa I (exon 14) polymorphisms differed significantly between the groups with low and high HDL cholesterol. Further analysis revealed that the Msp I polymorphism had a 1.5-fold larger impact on CETP concentration than the TaqIB polymorphism and a fivefold larger impact than the Rsa I polymorphism. In conclusion, we demonstrated that heterogeneity at the CETP gene locus is correlated with CETP plasma concentrations and HDL cholesterol levels. More specifically, our data indicate the presence of a strong association between common variants of the CETP gene, high plasma CETP concentrations, and consequently hypoalphalipoproteinemia in healthy white men.
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