OBJECTIVES: Ischemic stroke is a suddenly developing temporary or often permanent damage of the brain. Several candidate genes have been shown to have an impact in the pathogenesis of stroke. The aim of our study was to investigate the possible association between the C56G variant of the apolipoprotein A5 (APOA5) gene and ischemic stroke. METHODS: PCR-RFLP assays were performed to detect the C56G alleles in 403 patients with classified stroke types and 171 controls. RESULTS: Triglyceride levels of subjects carrying 56G allele were elevated compared to the subjects with 56C allele in all stroke subgroups and in the controls. The serum total cholesterol levels did not differ between subjects with C or G alleles in each group. An accumulation of APOA5 56G allele was observed in the large-vessel associated stroke group compared to the healthy controls (10.9 vs. 5.6 %; p < 0.05), while its prevalence did not increase in any other stroke subgroups. Multivariate logistic regression analysis adjusted for differences in age, gender, BMI, serum total cholesterol levels, ischemic heart disease, hypertension, diabetes mellitus, smoking and drinking habits revealed that the APOA5 56G allele represents a susceptibility factor for large-vessel associated stroke (OR = 2.132 at 95 % CI; p < 0.05). CONCLUSION: The data presented here suggest that the 56G allele can confer risk exclusively for development of large-vessel associated stroke. Thereby, the 56G allele differs from the APOA5 T-1131C allelic variant, which has been previously identified as a risk factor for all subgroups of the stroke disease.
OBJECTIVES:Ischemic stroke is a suddenly developing temporary or often permanent damage of the brain. Several candidate genes have been shown to have an impact in the pathogenesis of stroke. The aim of our study was to investigate the possible association between the C56G variant of the apolipoprotein A5 (APOA5) gene and ischemic stroke. METHODS: PCR-RFLP assays were performed to detect the C56G alleles in 403 patients with classified stroke types and 171 controls. RESULTS:Triglyceride levels of subjects carrying 56G allele were elevated compared to the subjects with 56C allele in all stroke subgroups and in the controls. The serum total cholesterol levels did not differ between subjects with C or G alleles in each group. An accumulation of APOA5 56G allele was observed in the large-vessel associated stroke group compared to the healthy controls (10.9 vs. 5.6 %; p < 0.05), while its prevalence did not increase in any other stroke subgroups. Multivariate logistic regression analysis adjusted for differences in age, gender, BMI, serum total cholesterol levels, ischemic heart disease, hypertension, diabetes mellitus, smoking and drinking habits revealed that the APOA5 56G allele represents a susceptibility factor for large-vessel associated stroke (OR = 2.132 at 95 % CI; p < 0.05). CONCLUSION: The data presented here suggest that the 56G allele can confer risk exclusively for development of large-vessel associated stroke. Thereby, the 56G allele differs from the APOA5T-1131C allelic variant, which has been previously identified as a risk factor for all subgroups of the stroke disease.
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