title: Prevalence of hyperapobetalipoproteinemia and other lipoprotein phenotypes in men (aged < or = 50 years) and women (< or = 60 years) with coronary artery disease.
abstract: The prevalence and clinical characteristics of hyperapobetalipoproteinemia (hyperapoB) and other phenotypes of dyslipoproteinemia were examined in 99 men (aged < or = 50 years) and 104 women (< or = 60 years) undergoing elective diagnostic coronary arteriography. HyperapoB was the most common phenotype (34%) associated with premature coronary artery disease (CAD). Only 20.2% of patients with CAD had a normal lipoprotein phenotype. The significant odds ratios for CAD were as follows: hypertriglyceridemic hyperapoB 17.45 (p < 0.0001), type IV 6.54 (p = 0.0001), type IIa 4.73 (p = 0.008), normotriglyceridemic hyperapoB 2.54 (p = 0.03) and type IIb 8.73 (p = 0.05). The strong association of hypertriglyceridemic hyperapoB with CAD reflected the multiplicative effect of increased low-density lipoprotein apolipoprotein B and endogenous hypertriglyceridemia, and was independent of the effects of age, sex, diabetes mellitus, systemic hypertension, body mass index and cigarette smoking. The ratio of apolipoprotein B to A-1 was better than those of low-density to high-density lipoprotein cholesterol and total to high-density lipoprotein cholesterol at discriminating dyslipidemic phenotypes from normal. Obesity was increased approximately 1.5 to two-fold in the hypertriglyceridemic phenotypes, diabetes was more prevalent in hypertriglyceridemic hyperapoB (6.8-fold; p < 0.001) and type IV (4.4-fold; p = 0.02), and hypertension was increased 1.5- to twofold in most dyslipidemic groups. The data indicate that hyperapoB and endogenous hypertriglyceridemia both contribute to the risk of premature CAD.
authors.affiliation: Department of Pediatrics, Johns Hopkins University Medical Institutions, Baltimore, Maryland.
authors.forename: P O
authors.initials: PO
authors.lastname: Kwiterovich
authors.forename: J
authors.initials: J
authors.lastname: Coresh
authors.forename: P S
authors.initials: PS
authors.lastname: Bachorik
mesh_terms: D001055:Apolipoproteins B / Q000097:blood* / Q000235:genetics; D003327:Coronary Disease / Q000097:blood / Q000150:complications* / Q000209:etiology; D048909:Diabetes Complications; D003920:Diabetes Mellitus / Q000097:blood; D005260:Female; D006801:Humans; D006951:Hyperlipoproteinemias / Q000235:genetics*; D006973:Hypertension / Q000097:blood / Q000150:complications; D007223:Infant; D008055:Lipids / Q000097:blood; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000097:blood / Q000150:complications; D010641:Phenotype; D012307:Risk Factors; D012907:Smoking; D014280:Triglycerides / Q000097:blood
chemical_list: D001055:Apolipoproteins B; D008055:Lipids; D014280:Triglycerides