title: Apolipoproteins AI, B, and E polymorphisms in severe aortic valve stenosis.
abstract: Hypercholesterolemia has been related to aortic valve stenosis (AS). Polymorphisms of apolipoproteins (apo) AI, B, and E are associated with variable levels of plasma lipids, but the association between these polymorphisms and AS is unknown. In a case-control study of groups matched by age, sex, comparable body mass index, hypertension, triglycerides, high-density lipoprotein (HDL) cholesterol, and low-density lipoprotein (LDL) cholesterol, we analyzed the distribution of apo AI A/G mutation, apo B signal peptide insertion/deletion, apo B XbaI restriction fragment length. and apo E polymorphisms in 62 non-diabetic patients with severe aortic valve stenosis and 62 control subjects. All patients underwent echocardiographic analysis. Univariate analysis showed a higher prevalence of the XbaI X + /X + genotype (p = 0.007) of apo B and the apo E2 allele (p = 0.034) in patients with severe AS. Apo polymorphisms were not associated with lipid levels, left ventricular mass, or the aortic gradient.
authors.affiliation: Heart Institute InCor, University of São Paulo Medical School, São Paulo, Brazil.
authors.forename: S D
authors.initials: SD
authors.lastname: Avakian
authors.forename: J M
authors.initials: JM
authors.lastname: Annicchino-Bizzacchi
authors.forename: M
authors.initials: M
authors.lastname: Grinberg
authors.forename: J A
authors.initials: JA
authors.lastname: Ramires
authors.forename: A P
authors.initials: AP
authors.lastname: Mansura
mesh_terms: D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000235:genetics*; D016632:Apolipoprotein A-I / Q000235:genetics*; D001055:Apolipoproteins B / Q000235:genetics*; D001057:Apolipoproteins E / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic / Q000235:genetics*; D015995:Prevalence; D014463:Ultrasonography
chemical_list: D016632:Apolipoprotein A-I; D001055:Apolipoproteins B; D001057:Apolipoproteins E