Abstract
Objective To investigate the association between matrix metalloproteinase (MMP)-9 gene rs20544 polymorphism and hemorrhagic transformation (HT) in patients with acute ischemic stroke (AIS). Methods Patients with AIS admitted to the Department of Neurology, TEDA Hospital from March 2016 to September 2018 were enrolled. They were divided into HT group and non-HT group depending on whether HT occurred. HT was defined as no bleeding found in the first imaging examination, and the head CT rescaning indicated a high-density lesion in the low-density area. MMP-9 gene rs20544 single nucleotide polymorphism was determined by TaqMan®SNP genotype analysis kit. Multivariate logistic regression analysis was used to determine the independent association between rs20544 polymorphism and HT. Results A total of 204 patients with AIS were enrolled, aged 66.91±9.07 years, 89 males (43.63%), and 45 (22.06%) developed HT. There were significant differences in atrial fibrillation, diabetes, fasting blood glucose, and triglyceride between the HT group and the non-HT group (all P<0.05). There was also a significant difference in rs2054 genotype distribution between the HT group and the non-HT group (χ2=7.067; P=0.029). Multivariate logistic regression analysis showed that after adjusting atrial fibrillation, diabetes, fasting blood glucose, triglyceride, and hyperlipidemia, rs20544 CC genotype (odds ratio 2.074, 95% confidence interval 1.368-4.041) and CT genotype (odds ratio 1.571, 95% confidence interval 1.109-2.544) were the independent risk factors for HT. Conclusion MRP-9 gene rs20544 single nucleotide polymorphism is associated with increased susceptibility to HT in patients with AIS. Key words: Stroke; Brain ischemia; Cerebral hemorrhage; Matrix metalloproteinase 9; Polymorphism, single nucleotide; Risk factors
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