Background/aim: We aimed to investigate the associations between endothelial nitric oxide synthase(eNOS) gene polymorphisms [G894T (rs1799983)], intron 4 (27-bpTR) variable number tandem repeat (VNTR) and T786C (rs2070744), and ischemic stroke in the Anatolian population.Materials and methods: This case-control study included 112 patients with "stroke of undetermined etiology" and 160 controls. Real-time polymerase chain reaction (RT-PCR) analysis was used to analyze these polymorphisms. Between-group frequencies of alleles and genotypes were compared using binary logistic regression analysis.Results: No significant difference was observed between the two groups in terms of the genotype and allele distributions of the eNOS G894T (rs1799983) polymorphism (P > 0.05). The a alleles and the 4b/a and 4a/a genotypes of the intron 4 (27-bpTR) VNTR polymorphism had significantly higher frequencies in the patient group than in the control group (OR: 2.715, P < 0.001; OR: 3.396, P < 0.001; OR: 10.631, P = 0.016, respectively). On the contrary, the TC genotype and C alleles of the T786C (rs2070744) polymorphism had a significantly lower frequency in the patient group than in the control group (OR: 0.244, P < 0.001, OR: 0.605, P = 0.006, respectively).Conclusion: Our findings indicate that the eNOS G894T and T786C [rs2070744] polymorphisms are not associated with the risk of ischemic stroke, whereas the intron 4 [27-bpTR] VNTR may be a risk factor in the Anatolian population.
Stroke, polymorphism, endothelial nitric oxide synthase, G894T, variable number tandem repeat, T786C
ANLIAÇIK, SÜLEYMAN ÖMER; TOKGÖZ, OSMAN SERHAT; ZAMANİ, AYŞEGÜL; YILDIRIM, MAHMUT SELMAN; and İYİSOY, MEHMET SİNAN
"Investigation of the relationship between ischemic stroke and endothelial nitric oxide synthase gene polymorphisms [G894T, intron 4 VNTR and T786C],"
Turkish Journal of Medical Sciences: Vol. 49:
2, Article 21.
Available at: https://journals.tubitak.gov.tr/medical/vol49/iss2/21