title: Association of the apolipoprotein B gene polymorphisms with cholesterol levels and response to fluvastatin in Brazilian individuals with high risk for coronary heart disease.
abstract: The influence of genetic polymorphism of the apolipoprotein B on lipid metabolism and coronary heart disease (CHD) risk has been demonstrated in different populations, but few studies have shown the contribution of this risk factor in individuals from Brazil. The Ins/del, Xbal and EcoRI polymorphisms of apo B were evaluated in 93 controls and in 104 Caucasian individuals presenting with a high risk lipid profile (HR1) for CHD; 54 of these subjects (HR2) were treated with fluvastatin during 16 weeks. DNA polymorphisms of the apo B gene were analyzed by polymerase chain reaction-restriction fragment length polymorphism. The X(-)X(-) genotype for Xbal polymorphism was associated with higher serum concentrations of total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) (p<0.01) in women of the HR1 group. The Ins/del and EcoRI polymorphisms were not associated with variation of lipid profile. After treatment with fluvastatin, TC and LDL-C levels of HR2 individuals were reduced by 23% and 30%, respectively. Individuals with II genotype had significantly greater reduction (34%) of LDL-C than those with ID/DD genotypes (27%). These results indicate that the Xbal polymorphism is associated with variation of serum TC and LDL-C levels in Brazilian women with lipid profile of risk for CHD and the Ins/del polymorphism is associated with the therapeutic response to fluvastatin.
authors.affiliation: Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil. cecilia@usp.br
authors.forename: E C
authors.initials: EC
authors.lastname: Guzmán
authors.forename: M H
authors.initials: MH
authors.lastname: Hirata
authors.forename: E C
authors.initials: EC
authors.lastname: Quintão
authors.forename: R D
authors.initials: RD
authors.lastname: Hirata
mesh_terms: D000328:Adult; D000368:Aged; D000924:Anticholesteremic Agents / Q000627:therapeutic use*; D001055:Apolipoproteins B / Q000097:blood / Q000235:genetics*; D001938:Brazil; D002784:Cholesterol / Q000097:blood*; D003327:Coronary Disease / Q000097:blood / Q000188:drug therapy* / Q000235:genetics; D005229:Fatty Acids, Monounsaturated / Q000627:therapeutic use*; D005260:Female; D000077340:Fluvastatin; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D007211:Indoles / Q000627:therapeutic use*; D008055:Lipids / Q000097:blood; D008074:Lipoproteins / Q000097:blood; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012307:Risk Factors; D044465:White People / Q000235:genetics
chemical_list: D000924:Anticholesteremic Agents; D001055:Apolipoproteins B; D005229:Fatty Acids, Monounsaturated; D007211:Indoles; D008055:Lipids; D008074:Lipoproteins; D000077340:Fluvastatin; D002784:Cholesterol