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  • Title: High-density lipoprotein particle concentration and subclinical atherosclerosis of the carotid arteries in Japanese men.
    Author: Zaid M, Fujiyoshi A, Miura K, Abbott RD, Okamura T, Takashima N, Torii S, Saito Y, Hisamatsu T, Miyagawa N, Ohkubo T, Kadota A, Sekikawa A, Maegawa H, Nakamura Y, Mitsunami K, Ueshima H, SESSA Research group.
    Journal: Atherosclerosis; 2015 Apr; 239(2):444-50. PubMed ID: 25687270.
    Abstract:
    OBJECTIVE: The association of high-density lipoprotein particle (HDL-P) with atherosclerosis may be stronger than that of HDL-cholesterol (HDL-C) and independent of conventional cardiovascular risk factors. Whether associations persist in populations at low risk of coronary heart disease (CHD) remains unclear. This study examines the associations of HDL-P and HDL-C with carotid intima-media thickness (cIMT) and plaque counts among Japanese men, who characteristically have higher HDL-C levels and a lower CHD burden than those in men of Western populations. METHODS: We cross-sectionally examined a community-based sample of 870 Japanese men aged 40-79 years, free of known clinical cardiovascular disease (CVD) and not on lipid-lowering medication. Participants were randomly selected among Japanese living in Kusatsu City in Shiga, Japan. RESULTS: Both HDL-P and HDL-C were inversely and independently associated with cIMT in models adjusted for conventional CHD risk factors, including low-density lipoprotein cholesterol (LDL-C) and diabetes. HDL-P maintained an association with cIMT after further adjustment for HDL-C (P < 0.01), whereas the association of HDL-C with cIMT was noticeably absent after inclusion of HDL-P in the model. In plaque counts of the carotid arteries, HDL-P was significantly associated with a reduction in plaque count, whereas HDL-C was not. CONCLUSION: HDL-P, in comparison to HDL-C, is more strongly associated with measures of carotid atherosclerosis in a cross-sectional study of Japanese men. Findings demonstrate that, HDL-P is a strong correlate of subclinical atherosclerosis even in a population at low risk for CHD.
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