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  • Title: A low prevalence of coronary heart disease among subjects with increased high-density lipoprotein cholesterol levels, including those with plasma cholesteryl ester transfer protein deficiency.
    Author: Moriyama Y, Okamura T, Inazu A, Doi M, Iso H, Mouri Y, Ishikawa Y, Suzuki H, Iida M, Koizumi J, Mabuchi H, Komachi Y.
    Journal: Prev Med; 1998; 27(5 Pt 1):659-67. PubMed ID: 9808796.
    Abstract:
    BACKGROUND: Use of genetic analysis may improve the predictive value of risk factors for disease. A high plasma level of high-density lipoprotein (HDL) cholesterol is a strong negative risk factor for coronary heart disease (CHD). Cholesteryl ester transfer protein (CETP) deficiency causes increased levels of HDL cholesterol. However, recent studies suggest that CETP deficiency is a risk factor for CHD despite elevated HDL cholesterol levels. METHODS: Plasma lipid levels, CHD prevalence, resting electrocardiograms, and common CETP gene mutations were analyzed cross-sectionally in a population of 19,044 male and 29,487 female Japanese subjects (ages 45-79 years). RESULTS: High HDL cholesterol levels (serum HDL cholesterol >/=80 mg/dl, >/=95th percentile) were found in 6 and 5% of Japanese men and women, respectively. In the group with HDL cholesterol >/=80 mg/dl, common CETP gene mutations were identified in 23-24% of men and 31-49% of women. The prevalence of CHD in the group with high HDL cholesterol (>/=80 mg/dl) was low among both men (1.0%) and women (1.3%). There was no difference in CHD prevalence between hyper-HDL-cholesterolemic subjects with and without CETP mutations. CONCLUSIONS: Subjects with very high HDL levels (HDL cholesterol >/=80 mg/dl) as well as mild-to-moderate HDL elevations (60-79 mg/dl) appear to be protected against CHD, whether or not they have CETP deficiency, a genetic cause of elevated HDL.
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