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Association study between C7673T polymorphism in apolipoprotein B gene and cerebral infarction with family history in a Chinese population

Author(s): Zhang Le | Zeng Yi | Ma Mingming | Yang Qidong | Hu Zhongyang | Du Xiaoping

Journal: Neurology India
ISSN 0028-3886

Volume: 57;
Issue: 5;
Start page: 584;
Date: 2009;
Original page

Keywords: Apolipoprotein B gene | C7673T polymorphism | cerebral infarction | family history

Background : Apolipoprotein B (ApoB) levels have been shown to be associate with risk of ischemic stroke. The apolipoprotein B gene (APOB) polymorphisms may influence levels of ApoB and risk of ischemic stroke, but whether they are associated with risk of ischemic cerebral infarction (CI) with family history (CIFH) or not is unknown. Aims : To investigate the possible association of the polymorphism of APOB C7673T with CIFH in Han Chinese from Changsha. Settings and Design : The study population included 47 patients with CIFH and 83 patients with cerebral infarction with no family histroy (CINFH). Control population included 100 healthy subjects with no history of ischemic stroke matched for age, sex, and ethnic background. Materials and Methods : The APOB C7673T polymorphism was analyzed by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Plasma lipids levels were also examined by standard enzymatic methods and enzyme-linked immunosorbent assay (ELISA). Statistics : The statistical analysis was done using SPSS 14.0 software package. A P value < 0.05 was taken as significant. Results : This study showed an association between the APOB C7673T polymorphism and CI, especially CIFH in Han Chinese from Changsha. The T alleles frequency of the C7673T polymorphism was significantly higher in both the CIFH and CINFH groups when compared with the control group (P < 0.01; P < 0.05; respectively). And the T allele frequency in CIFH group (0.17) was higher than CINFH (0.09) group (P=0.056). In both the CIFH and CINFH groups the serum levels of TC and LDL cholesterol were significantly high in the TT and TC genotypes than that in the CC genotype (P < 0.01), while the serum level of HDL cholesterol in the TT and TC genotypes was significantly lower than that in the CC genotype (P < 0.05). Conclusions : The APOB C7673T polymorphism is related to CI, especially CIFH through changing serum lipid levels in a Chinese population.
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