title: Association of the low-density lipoprotein cholesterol/high-density lipoprotein cholesterol ratio and concentrations of plasma lipids with high-density lipoprotein subclass distribution in the Chinese population.
abstract: BACKGROUND
  To evaluate the relationship between the low-density lipoprotein cholesterol (LDL-C)/high-density lipoprotein cholesterol (HDL-C) ratio and HDL subclass distribution and to further examine and discuss the potential impact of LDL-C and HDL-C together with TG on HDL subclass metabolism.
  
  
  RESULTS
  Small-sized prebeta1-HDL, HDL3b and HDL3a increased significantly while large-sized HDL2a and HDL2b decreased significantly as the LDL-C/HDL-C ratio increased. The subjects in low HDL-C level (< 1.03 mmol/L) who had an elevation of the LDL-C/HDL-C ratio and a reduction of HDL2b/prebeta1-HDL regardless of an undesirable or high LDL-C level. At desirable LDL-C levels (< 3.34 mmol/L), the HDL2b/prebeta1-HDL ratio was 5.4 for the subjects with a high HDL-C concentration (> or = 1.55 mmol/L); however, at high LDL-C levels (> or = 3.36 mmol/L), the ratio of LDL-C/HDL-C was 2.8 in subjects, and an extremely low HDL2b/prebeta1-HDL value although with high HDL-C concentration.
  
  
  CONCLUSIONS
  With increase of the LDL-C/HDL-C ratio, there was a general shift toward smaller-sized HDL particles, which implied that the maturation process of HDL was blocked. High HDL-C concentrations can regulate the HDL subclass distribution at desirable and borderline LDL-C levels but cannot counteract the influence of high LDL-C levels on HDL subclass distribution.
authors.affiliation: Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China.
authors.forename: Li
authors.initials: L
authors.lastname: Tian
authors.forename: Yinghui
authors.initials: Y
authors.lastname: Liu
authors.forename: Yang
authors.initials: Y
authors.lastname: Qin
authors.forename: Shiyin
authors.initials: S
authors.lastname: Long
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Xu
authors.forename: Mingde
authors.initials: M
authors.lastname: Fu
mesh_terms: D000368:Aged; D000465:Algorithms; D001053:Apolipoproteins / Q000097:blood; D050197:Atherosclerosis / Q000097:blood / Q000453:epidemiology / Q000517:prevention & control; D001797:Blood Protein Electrophoresis; D002681:China / Q000453:epidemiology; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood*; D008078:Cholesterol, LDL / Q000097:blood*; D003327:Coronary Disease / Q000097:blood / Q000453:epidemiology / Q000517:prevention & control; D005260:Female; D006801:Humans; D006951:Hyperlipoproteinemias / Q000097:blood*; D008055:Lipids / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood* / Q000145:classification*; D008297:Male; D008875:Middle Aged; D020033:Protein Isoforms / Q000097:blood; D013223:Statistics as Topic; D014280:Triglycerides / Q000097:blood
chemical_list: D001053:Apolipoproteins; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D008055:Lipids; D008075:Lipoproteins, HDL; D020033:Protein Isoforms; D014280:Triglycerides; D002784:Cholesterol