title: Distribution and correlates of lipoproteins and their subclasses in black and white young adults. The Bogalusa Heart Study.
abstract: Lipoprotein subclasses vary in CAD risk potential, but their distribution and correlates are not well documented in black and white young adults. A subsample of 449 (32%) young adults (67% white, 58% female) aged 20-37 years examined in the Bogalusa Heart Study had lipoprotein subclasses measured in terms of cholesterol by vertical spin density-gradient ultracentrifugation. LDL subclass pattern was characterized as either predominantly LDL(1) (large, buoyant), LDL(2) (intermediate) or LDL(3) (small, dense). Whites had significantly higher levels of VLDL, VLDL(3), and LDL and lower levels of HDL(2) and HDL(3) than blacks. White females had significantly higher levels of HDL(2) than white males. Visceral fatness, measured as waist circumference, and race were the major contributors to the explained variance (6-22%) of these lipoproteins, with adverse trends seen among whites and persons with large waist circumferences. Sex (males>females), waist circumference (positive), HDL(2) (negative), and HDL(3) (positive) were the predictor variables for the likelihood of having the LDL(3) pattern. When glucose and insulin were included in the multivariate analysis, insulin (positive), sex (males>females), HDL(2) (negative) and HDL(3) (positive) became significant predictors of LDL(3) pattern. Positive parental history of CAD was associated with LDL (P=0.009) in white males, and HDL(2) (P=0.008) and LDL(3) subclass pattern (P=0.038) in white females; whereas none in blacks. The observed correlates of lipoprotein subclasses and patterns need to be considered in estimating CAD risk in young adults.
authors.affiliation: Tulane Center for Cardiovascular Health, Tulane University School of Tropical Hygiene and Public Health, Suite 2140, 1440 Canal Street, New Orleans, LA 70112, USA.
authors.forename: S R
authors.initials: SR
authors.lastname: Srinivasan
authors.forename: J P
authors.initials: JP
authors.lastname: Segrest
authors.forename: A M
authors.initials: AM
authors.lastname: Elkasabany
authors.forename: G S
authors.initials: GS
authors.lastname: Berenson
mesh_terms: D000328:Adult; D017677:Age Distribution; D044383:Black People / Q000235:genetics*; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000208:ethnology*; D003430:Cross-Sectional Studies; D005260:Female; D006306:Health Surveys; D006801:Humans; D015994:Incidence; D008074:Lipoproteins / Q000097:blood* / Q000145:classification*; D008075:Lipoproteins, HDL / Q000097:blood; D008077:Lipoproteins, LDL / Q000097:blood; D008079:Lipoproteins, VLDL / Q000097:blood; D008297:Male; D011336:Probability; D018570:Risk Assessment; D012307:Risk Factors; D012494:Sampling Studies; D017678:Sex Distribution; D012737:Sex Factors; D014481:United States / Q000453:epidemiology; D044465:White People / Q000235:genetics*; D001741:Black or African American
chemical_list: D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D008079:Lipoproteins, VLDL