title: Relationship between total cholesterol/high-density lipoprotein cholesterol ratio, triglyceride/high-density lipoprotein cholesterol ratio, and high-density lipoprotein subclasses.
abstract: Alterations in plasma lipid levels can influence the composition, content, and distribution of plasma lipoprotein subclasses that affect atherosclerosis risk. This study evaluated the relationship between plasma total cholesterol (TC)/high-density lipoprotein cholesterol (HDL-C) ratio, triglyceride (TG)/HDL-C ratio, and HDL subclass distribution. The apolipoprotein A-I contents of plasma HDL subclasses were quantitated by 2-dimensional gel electrophoresis coupled with immunodetection in 442 Chinese subjects. The particle size of HDL shifted toward smaller size with the elevation of TC/HDL-C and TG/HDL-C ratios. The ratio of large-sized HDL(2b) to small-sized prebeta(1)-HDL (HDL(2b)/prebeta(1)-HDL) was about 4.7 in the subjects with TC/HDL-C of 3.3 or lower and TG/HDL-C of 2.5 or lower, whereas it was only approximately 1.1 in subjects with TC/HDL-C greater than 6 and TG/HDL-C greater than 5. Pearson correlation analysis revealed that the TC/HDL-C ratio was positively correlated with prebeta(1)-HDL and HDL(3a) but negatively correlated with HDL(2a) and HDL(2b), whereas the TC/HDL-C ratio was only inversely correlated with HDL(2b). The TC/HDL-C and TG/HDL-C ratios together may be a good indicator of HDL subclass distribution. When these 2 ratios increased simultaneously, the trend toward smaller HDL size was obvious, which, in turn, indicated that the maturation of HDL might be impeded and the reverse cholesterol transport might be weakened. In addition, the TG/HDL-C ratio might be a more powerful factor to influence the distribution of HDL subclasses.
authors.affiliation: Apolipoprotein Research Unit, Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, 610041 Sichuan, PR China.
authors.forename: Lianqun
authors.initials: L
authors.lastname: Jia
authors.forename: Shiyin
authors.initials: S
authors.lastname: Long
authors.forename: Mingde
authors.initials: M
authors.lastname: Fu
authors.forename: Bingyu
authors.initials: B
authors.lastname: Yan
authors.forename: Ying
authors.initials: Y
authors.lastname: Tian
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Xu
authors.forename: Lantu
authors.initials: L
authors.lastname: Gou
mesh_terms: D000328:Adult; D000368:Aged; D016632:Apolipoprotein A-I / Q000097:blood; D044466:Asian People; D001692:Biological Transport; D002681:China; D002784:Cholesterol / Q000097:blood* / Q000378:metabolism; D008076:Cholesterol, HDL / Q000097:blood* / Q000145:classification; D006801:Humans; D008875:Middle Aged; D008970:Molecular Weight; D014280:Triglycerides / Q000097:blood*
chemical_list: D016632:Apolipoprotein A-I; D008076:Cholesterol, HDL; D014280:Triglycerides; D002784:Cholesterol