PMID- 29678854 OWN - NLM STAT- MEDLINE DCOM- 20180911 LR - 20221207 IS - 1550-8080 (Electronic) IS - 0091-7370 (Linking) VI - 48 IP - 2 DP - 2018 Mar TI - The Relationship of Methylenetetrahydrofolate Reductase Gene C677T Polymorphism and Ischemic Stroke in Chinese Han Population. PG - 242-247 AB - BACKGROUND: The purpose of this study was to investigate the relationship of methylenetetrahydrofolate reductase (MTHFR) gene C677T polymorphism and ischemic stroke Large-artery atherosclerosis (LAA) and Small-artery occlusion (SAO) subtypes in Chinese Han Population. MATERIALS AND METHODS: One hundred and thirty LAA patients and one hundred and fifty-nine SAO patients data were prospectively collected. The control group was one hundred and ninety-eight subjects from the Medical Examination Center in the same period. Plasma homocysteine (Hcy) levels were determined by a double reagent enzymatic cycling method. The genotypes of MTHFR polymorphism (C677T) were determined using polymerase chain reaction-restriction fragment length polymorphism. RESULTS: As compared with the controls, hypertension prevalence, smoking consumption ratio were significantly higher, plasma Hcy levels increased significantly, plasma high-density lipoprotein cholesterol levels were significantly reduced in LAA and SAO groups (P<0.05 for each). Elevated plasma Hcy levels were associated with MTHFR C677T polymorphism (P<0.01). The frequency of C/T+T/T genotypes and T allele in LAA and SAO groups was significantly higher than those in control groups (P<0.01). CONCLUSIONS: The present study suggests that hypertension, smoking, decreasing plasma high-density lipoprotein cholesterol levels and hyperhomocysteinemia (HHcy) are independent risk factors for LAA and SAO subtypes of ischemic stroke in Chinese Han Population. The MTHFR gene C677T C/T+T/T genotypes and T allele increases the risk of LAA and SAO subtypes of ischemic stroke. CI - (c) 2018 by the Association of Clinical Scientists, Inc. FAU - Mao, Xinlei AU - Mao X AD - Department of Neurology, Wenzhou Central Hospital & Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, Zhejiang, China 57078692@qq.com. FAU - Han, Liya AU - Han L AD - Department of Neurology, Wenzhou Central Hospital & Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, Zhejiang, China. LA - eng PT - Journal Article PL - United States TA - Ann Clin Lab Sci JT - Annals of clinical and laboratory science JID - 0410247 RN - 0LVT1QZ0BA (Homocysteine) RN - EC 1.5.1.20 (Methylenetetrahydrofolate Reductase (NADPH2)) SB - IM MH - Aged MH - Asian People MH - Brain Ischemia/complications MH - China MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease/*genetics MH - Genotype MH - Homocysteine/blood MH - Humans MH - Logistic Models MH - Male MH - Methylenetetrahydrofolate Reductase (NADPH2)/*genetics MH - Middle Aged MH - Polymorphism, Genetic/*genetics MH - Risk Factors MH - Statistics, Nonparametric MH - Stroke/blood/etiology/*genetics OTO - NOTNLM OT - Ischemic stroke OT - gene polymorphism OT - homocysteine OT - methylenetetrahydrofolate reductase EDAT- 2018/04/22 06:00 MHDA- 2018/09/12 06:00 CRDT- 2018/04/22 06:00 PHST- 2018/04/22 06:00 [entrez] PHST- 2018/04/22 06:00 [pubmed] PHST- 2018/09/12 06:00 [medline] AID - 48/2/242 [pii] PST - ppublish SO - Ann Clin Lab Sci. 2018 Mar;48(2):242-247.