title: The estimation of gametic disequilibrium between DNA markers in candidate genes for coronary artery disease (CAD) and the associations of gene complexes with risk factors for CAD.
abstract: In this investigation associations of gene complexes consisting of seven candidate for coronary atherosclerosis (ACE, AGT, NOS3, APOA1, MTHFR, PLAT, F13) with risk factors for CAD (lipid levels, blood pressure, body mass index (BMI)) were studied in Russian population. 94 male patients with CAD proven by angiography and 131 healthy individuals were involved in the case-control study. We observed a significant contribution of gene combinations ("ensembles"). ACE-MTHFR, ACE-F13, ACE-AGT-MTHFR in the variability of the total cholesterol and LDL-cholesterol levels. The "Ensembles" ACE-AGT-MTHFR were associated with variability of three atherogenic risk factors (LDL, BMI, cholesterol total). Two-locus gametic disequilibrium was analysed between gene polymorphisms. NOS3 and ACE, NOS3 and APOA1 were in gametic disequilibrium in the control group. Polymorphic markers of ACE and F13, NOS3 and F13, ACE and PLAT loci were in gametic disequilibrium in the patients. Both approaches (association analysis and gametic disequilibrium) revealed the same gene combinations contributing to the CAD risk factors. NOS3 and APOA1 markers were in gametic disequilibrium in the patients and both of them were associated with LDL. F13 and AGT were associated with systolic and diastolic blood pressure and two-locus gametic disequilibrium between F13 and AGT polymorphisms observed in the patients.
authors.affiliation: Institute of Medical Genetics, Tomsk Research Center, Siberian Division, Russian Academy of Medical Sciences, Tomsk, Russia. maria37@mail.ru
authors.forename: M G
authors.initials: MG
authors.lastname: Spiridonova
authors.forename: V A
authors.initials: VA
authors.lastname: Stepanov
authors.forename: V P
authors.initials: VP
authors.lastname: Puzyrev
authors.forename: R S
authors.initials: RS
authors.lastname: Karpov
mesh_terms: D000328:Adult; D000483:Alleles; D016022:Case-Control Studies; D003327:Coronary Disease / Q000235:genetics*; D005787:Gene Frequency; D005819:Genetic Markers; D005838:Genotype; D005854:Germ Cells; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012307:Risk Factors; D012426:Russia
chemical_list: D005819:Genetic Markers