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Zarembska E, Ślusarczyk K, Wrzosek M. The Implication of a Polymorphism in the Methylenetetrahydrofolate Reductase Gene in Homocysteine Metabolism and Related Civilisation Diseases. Int J Mol Sci 2023; 25:193. [PMID: 38203363 PMCID: PMC10779094 DOI: 10.3390/ijms25010193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a key regulatory enzyme in the one-carbon cycle. This enzyme is essential for the metabolism of methionine, folate, and RNA, as well as for the production of proteins, DNA, and RNA. MTHFR catalyses the irreversible conversion of 5,10-methylenetetrahydrofolate to its active form, 5-methyltetrahydrofolate, a co-substrate for homocysteine remethylation to methionine. Numerous variants of the MTHFR gene have been recognised, among which the C677T variant is the most extensively studied. The C677T polymorphism, which results in the conversion of valine to alanine at codon 222, is associated with reduced activity and an increased thermolability of the enzyme. Impaired MTHFR efficiency is associated with increased levels of homocysteine, which can contribute to increased production of reactive oxygen species and the development of oxidative stress. Homocysteine is acknowledged as an independent risk factor for cardiovascular disease, while chronic inflammation serves as the common underlying factor among these issues. Many studies have been conducted to determine whether there is an association between the C677T polymorphism and an increased risk of cardiovascular disease, hypertension, diabetes, and overweight/obesity. There is substantial evidence supporting this association, although several studies have concluded that the polymorphism cannot be reliably used for prediction. This review examines the latest research on MTHFR polymorphisms and their correlation with cardiovascular disease, obesity, and epigenetic regulation.
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Affiliation(s)
- Emilia Zarembska
- Student Scientific Association “Farmakon”, Department of Biochemistry and Pharmacogenomics, Medical University of Warsaw, 1 Banacha St., 02-097 Warsaw, Poland
| | - Klaudia Ślusarczyk
- Student Scientific Association “Farmakon”, Department of Biochemistry and Pharmacogenomics, Medical University of Warsaw, 1 Banacha St., 02-097 Warsaw, Poland
- Department of Medical Genetics, Institute of Mother and Child, 17a Kasprzaka St., 01-211 Warsaw, Poland
| | - Małgorzata Wrzosek
- Department of Biochemistry and Pharmacogenomics, Medical University of Warsaw, 1 Banacha St., 02-097 Warsaw, Poland
- Centre for Preclinical Research, Medical University of Warsaw, 1B Banacha St., 02-097 Warsaw, Poland
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Zhao L, Li T, Dang M, Li Y, Fan H, Hao Q, Song D, Lu J, Lu Z, Jian Y, Wang H, Wang X, Wu Y, Zhang G. Association of methylenetetrahydrofolate reductase (MTHFR) rs1801133 (677C>T) gene polymorphism with ischemic stroke risk in different populations: An updated meta-analysis. Front Genet 2023; 13:1021423. [PMID: 36685916 PMCID: PMC9845415 DOI: 10.3389/fgene.2022.1021423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/29/2022] [Indexed: 01/05/2023] Open
Abstract
Background: Recently, increasing evidence has implicated methylenetetrahydrofolate reductase (MTHFR) gene mutation as a risk factor for ischemic stroke (IS) in the general population. However, studies have been inconclusive and lack evidence on specific populations. We aim to determine whether the rs1801133 (NC_000001.11 (MTHFR):g. 677C>T (p.Ala222Val) variant, we termed as MTHFR rs1801133 (677 C>T), is linked to an increased risk of IS in different age groups and ancestry groups. Methods: The literature relevant to our study was found by searching the PubMed, Cochrane Library, Web of Science, EMBASE, and CNKI databases. A random effect model analysis was used to calculate the pooled odds ratio (OR) and 95% confidence interval (CI) to evaluate any possible association. We conducted a subgroup analysis based on the age and ancestry groups of the included populations. Results: As of March 2022, 1,925 citations had been identified in electronic databases, of which 96 studies involving 34,814 subjects met our eligibility criteria. A strong link was found between IS and the MTHFR gene rs1801133 (677C>T) polymorphism in all genetic models [dominant genetic model (OR = 1.47; 95%CI = 1.33-1.61; p < 0.001), recessive genetic model (OR = 1.52; 95%CI = 1.36-1.71; p < 0.001), heterozygous model (OR = 1.36; 95%CI = 1.24-1.48; p < 0.001), homozygous model (OR = 1.82; 95%CI = 1.58-2.11; p < 0.001), and T allelic genetic model (OR = 1.37; 95%CI = 1.27-1.48; p < 0.001)]. Further subgroup analyses indicated that the MTHFR rs1801133 (677C>T) variant may increase the risk of IS in Asian, Hispanic, or Latin population, middle-aged, and elderly populations (p < 0.001). Conclusion: Our results implied that mutation of the T allele of MTHFR rs1801133 (677C>T) could be a risk factor for IS. A significant association was found among Asian, Hispanic, or Latin population, middle-aged, and elderly people.
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Affiliation(s)
- Lili Zhao
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Tao Li
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Meijuan Dang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Ye Li
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Hong Fan
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Qian Hao
- Department of Oncology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Dingli Song
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Jialiang Lu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Ziwei Lu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yating Jian
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Heying Wang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Xiaoya Wang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yulun Wu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Guilian Zhang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China,*Correspondence: Guilian Zhang,
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Shi M, Kelly TN, Zhu Z, Li C, Shen C, Sun Y, Wang A, Shan G, Bu X, Guo D, Zhao J, Xu T, Peng H, Xu T, Zhong C, Sun X, Chen J, Zhang Y, He J. Large-Scale Targeted Sequencing Study of Ischemic Stroke in the Han Chinese Population. J Am Heart Assoc 2022; 11:e025245. [PMID: 36193932 PMCID: PMC9673712 DOI: 10.1161/jaha.122.025245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background Ischemic stroke is likely caused by interactions of multiple genes and environmental determinants. However, large‐scale sequencing studies to discern functional genetic variants and their interactions with clinical and lifestyle risk factors on ischemic stroke are limited. Methods and Results We sequenced functional regions of 740 previously identified genes associated with atherosclerotic disease among 999 ischemic stroke cases and 1001 controls of Chinese ancestry. Multiple logistic regression models were used to examine the associations between variants and ischemic stroke and test interactions between variants and clinical and lifestyle risk factors. Functional variants achieving suggestive significance were replicated in an independent sample of 4724 ischemic stroke cases and 5029 controls. Driven by variant main effects, each minor allele of the correlated rs174535, rs174545, and rs3834458 variants at MYRF‐FADS1‐FADS2 conferred an average 0.83‐fold (95% CI, 0.78–0.88) decreased odds of stroke. Significant main effects of MTHFR rs1801133 missense variant were also observed, with each copy of the A allele associated with a 1.20‐fold (95% CI, 1.13–1.27) higher odds of ischemic stroke. The functional ALDH2 rs671 variant was identified in interaction analyses with alcohol drinking (Meta‐P=3.39×10−17). Each minor allele conferred a 0.54‐fold (95% CI, 0.45–0.64) decreased odds of stroke among drinkers and a 0.89‐fold (95% CI, 0.83–0.97) decreased odds among nondrinkers. Conclusions Significant associations at MYRF‐FADS1‐FADS2 indicate that genetically elevated polyunsaturated fatty acids may decrease ischemic stroke risk in East Asians. Significant associations at MTHFR and ALDH2 robustly confirm deleterious effects of genetically elevated homocysteine and alcohol intake, respectively, on ischemic stroke.
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Affiliation(s)
- Mengyao Shi
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Tanika N Kelly
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Tulane University Translational Science Institute New Orleans LA
| | - Zhengbao Zhu
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Changwei Li
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
| | - Chong Shen
- Department of Epidemiology, School of Public Health Nanjing Medical University Nanjing China
| | - Yingxian Sun
- Department of Cardiology the First Affiliated Hospital of China Medical University Shenyang China
| | - Aili Wang
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Guangliang Shan
- Department of Epidemiology, School of Basic Medicine Peking Union Medical College Beijing China
| | - Xiaoqing Bu
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China.,Department of Epidemiology, School of Public Health and Management Chongqing Medical University Chongqing China
| | - Daoxia Guo
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Jingbo Zhao
- Department of Epidemiology, School of Public Health Harbin Medical University Harbin China
| | - Tan Xu
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Hao Peng
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Tian Xu
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China.,Department of Neurology Affiliated Hospital of Nantong University Nantong China
| | - Chongke Zhong
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Xiao Sun
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
| | - Jing Chen
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Tulane University Translational Science Institute New Orleans LA
| | - Yonghong Zhang
- Department of Epidemiology School of Public Health, and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Medical College of Soochow University Suzhou China
| | - Jiang He
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Tulane University Translational Science Institute New Orleans LA
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Du X, Xiao L, Sun R, Li K, Liang L, Song L, Liu Z. A prospective cohort study of MTHFR C677T gene polymorphism and its influence on the therapeutic effect of homocysteine in stroke patients with hyperhomocysteinemia. BMC Neurol 2020; 20:128. [PMID: 32278343 PMCID: PMC7149884 DOI: 10.1186/s12883-020-01701-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 03/26/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Hyperhomocysteinemia (HHCY) is a risk factor for cardiovascular and cerebrovascular diseases. The C677T 5, 10-methylenetetrahydrofolate reductase (MTHFR) gene polymorphism increases homocysteine (HCY) levels. This study analyzed the relationship between C677T MTHFR polymorphism and the therapeutic effect of lowering HCY in stroke patients with HHCY. METHODS Baseline data were collected from stroke patients with HHCY for this prospective cohort study. The C677T MTHFR genotype was detected by polymerase chain reaction-restriction fragment length polymorphism and the therapeutic effect to reduce HCY was compared. RESULTS Of 200 stroke patients 162 (81.0%) completed follow-up and were evaluated. Most of them responded well to treatment (103 cases, 63.5%), but 59 (36.4%) patients were in the poor efficacy group. There was a significant difference in terms of age (P < 0.001), hypertension (P = 0.041), hyperuricemia (P = 0.042), HCY after treatment (P < 0.001), and MTHFR genotype (P < 0.001) between the poor efficacy and effective groups, with increased frequency of the TT genotype in the poor efficacy group. Logistic regression showed that the T allele was associated with poor efficacy (OR = 0.733, 95%CI: 0.693, 0.862, P < 0.001). In the codominant model the TT genotype was associated with poor outcome (OR = 0.862, 95%CI: 0.767, 0.970, P = 0.017) and this was also the case in the recessive model (OR = 0.585, 95%CI: 0.462, 0.741, P < 0.001) but there was no association between CT and TT in the dominant model. CONCLUSIONS The T allele and TT genotype of the MTHFR C677T polymorphism was associated with poor HCY reduction treatment efficacy in stroke patients with HHCY. TRIAL REGISTRATION The registration number of the clinical trial is ChiCTR1800020048. Registration date: December 12, 2018.
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Affiliation(s)
- Xiaoxia Du
- Department of Neurorehabilitation, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China.
| | - Lin Xiao
- Department of Neurorehabilitation, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China
| | - Rong Sun
- Department of Neurorehabilitation, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China
| | - Kunpeng Li
- Case Statistics Office, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China
| | - Lin Liang
- Department of Clinical Laboratory, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China
| | - Luping Song
- Department of Neurorehabilitation, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China
| | - Zhizhong Liu
- Department of Clinical Laboratory, School of Rehabilitation Medicine, Capital Medical University, Beijing Bo'Ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China.
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Salimi S, Keshavarzi F, Mohammadpour-Gharehbagh A, Moodi M, Mousavi M, Karimian M, Sandoughi M. Polymorphisms of the folate metabolizing enzymes: Association with SLE susceptibility and in silico analysis. Gene 2017; 637:161-172. [DOI: 10.1016/j.gene.2017.09.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 07/22/2017] [Accepted: 09/19/2017] [Indexed: 01/23/2023]
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Vijayan M, Chinniah R, Ravi PM, Sivanadham R, Mosses Joseph AK, Vellaiappan NA, Krishnan JI, Karuppiah B. MTHFR (C677T) CT genotype and CT-apoE3/3 genotypic combination predisposes the risk of ischemic stroke. Gene 2016; 591:465-70. [PMID: 27378745 DOI: 10.1016/j.gene.2016.06.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/10/2016] [Accepted: 06/30/2016] [Indexed: 11/16/2022]
Abstract
The predisposition to ischemic stroke (IS) might involve interactions of several genes and environmental factors. The present study was aimed to evaluate the influence of polymorphisms in methylenetetrahydrofolate reductase (MTHFR-C677T) and apolipoprotein-E (apo-E) as risk factors for IS patients in south Indian population. 200 IS patients and 193 age and sex matched controls were genotyped for MTHFR-C677T and apoE by Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method. Statistically significant association was observed for MTHFR CT genotype (IS-Pooled: OR=4.29; p=5.01×10(-5); IS-Males: OR=4.13; p=0.001; IS-Females: OR=8.62; p=0.027; IS-Large Vessel Disease (LVD)- Pooled: OR=4.14; p=0.0002) and T allele (IS-Pooled: OR=4.82; p=1.49×10(-5); IS-Males: OR=4.33; p=0.0002; IS-Females: OR=7.99; p=0.031; IS-LVD-Pooled: OR=4.13; p=0.0001). Further, reduced frequencies of CC genotype (IS-Pooled: OR=0.20; p=9.80×10(-6); IS-Males: OR=0.25; p=0.001; IS-Females: OR=0.12; p=0.027; IS-LVD-Pooled: OR=0.23; p=0.0001) and C allele (IS-Pooled: OR=0.21; p=1.49×10(-5); IS-Males: OR=0.23; p=0.0002; IS-Females: OR=0.13; p=0.031; IS-LVD-Pooled: OR=0.24; p=0.0001) were observed in IS patients than the controls. No association was observed for apoE genotypes/alleles in IS/LVD cases. Our study demonstrated the presence of risk for MTHFR CT genotype/T allele and 'CT-3/3' (n=33 vs. 5; OR=7.42; p=0.001) genotypic combination in the development of IS in south India. Further, follow-up study of these stroke cases i.e., in later stages of the disease whether they are developing the neurological disorders such as Alzheimer's Disease (AD) and vascular dementia (VaD) is needed to draw a fruitful conclusion in connection between neurological disorders and with these two polymorphisms, before translating it into clinical practice.
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Affiliation(s)
- Murali Vijayan
- Department of Biotechnology & Genetic Engineering, School of Biotechnology, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India; Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Rathika Chinniah
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Padma Malini Ravi
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Ramgopal Sivanadham
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | | | | | | | - Balakrishnan Karuppiah
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India.
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Song Y, Li B, Wang C, Wang P, Gao X, Liu G. Association between 5,10-Methylenetetrahydrofolate Reductase C677T Gene Polymorphism and Risk of Ischemic Stroke: A Meta-analysis. J Stroke Cerebrovasc Dis 2016; 25:679-87. [PMID: 26776436 DOI: 10.1016/j.jstrokecerebrovasdis.2015.11.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/24/2015] [Accepted: 11/30/2015] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Hyperhomocysteinemia, a condition that is strongly determined by dietary intake of B vitamins, has been suggested to be an independent risk factor for ischemic stroke (IS). To test this hypothesis, we performed a meta-analysis to investigate the associations between 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T gene polymorphism, which plays a critical role in modulating plasma homocysteine concentrations, and IS risk. MATERIALS AND METHODS We searched case-control studies on the association between MTHFR C677T genetic polymorphism and susceptibility to IS through PubMed, Embase, and Medline databases from January 2000 up to October 2014. The random-effects model was employed because moderate heterogeneity across studies was observed, as assessed by I(2) statistic. Publication bias was estimated using funnel plot and Egger's regression test. RESULTS A total of 22 case-control studies were included in the current meta-analysis. Significant associations between MTHFR C677T genetic polymorphism and IS were found under the dominant model (pooled odds ratio [OR] = 1.40, 95% confidence interval [CI]: 1.24-1.57), the recessive model (pooled OR = 1.37, 95% CI: 1.16-1.61), and the allele model (pooled OR = 1.29, 95% CI: 1.18-1.42). CONCLUSIONS The meta-analysis suggests that MTHFR C677T genetic polymorphism is significantly associated with susceptibility to IS, which provides evidence supporting hyperhomocysteinemia as a risk factor for stroke.
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Affiliation(s)
- Yanli Song
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China; Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China; Department of Neurology, Handan First Hospital, Handan, China
| | - Bohong Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China; Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
| | - Chunjuan Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China; Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
| | - Penglian Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China; Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
| | - Xiang Gao
- Department of Nutritional Sciences, College of Health and Human Development, The Pennsylvania State University.
| | - Gaifen Liu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China; Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China.
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Association between rs1801133 polymorphism and risk of adult ischemic stroke: Meta-analysis based on case–control studies. Thromb Res 2016; 137:17-25. [DOI: 10.1016/j.thromres.2015.11.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/26/2015] [Accepted: 11/28/2015] [Indexed: 11/24/2022]
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9
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Titov BV, Matveeva NA, Martynov MY, Favorova OO. Ischemic stroke as a complex polygenic disease. Mol Biol 2015. [DOI: 10.1134/s0026893315020120] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Cui T. MTHFR C677T mutation increased the risk of Ischemic Stroke, especially in large-artery atherosclerosis in adults: an updated meta-analysis from 38 researches. Int J Neurosci 2015; 126:10-9. [DOI: 10.3109/00207454.2014.990559] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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11
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Zhang W, Wang Y, Bi G. Quantitative assessment of association between rs1801133 polymorphism and susceptibility to stroke. Cell Biochem Biophys 2014; 71:85-98. [PMID: 25107455 DOI: 10.1007/s12013-014-0166-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is an important enzyme involved in folate metabolism, which is essential for DNA synthesis and methylation. Genetic variations in the MTHFR gene seem to contribute to a decreased activity of MTHFR, ultimately confer increased susceptibility to stroke. To assess the association between this polymorphism and stroke risk, we conducted a comprehensive meta-analysis based on 73 eligible studies. A total of 73 studies, including 10,225 cases and 13,800 controls identified between 1999 and 2012, were selected through researching the PubMed, MEDLINE, EMBASE, Cochrane Library, Web of Science, and Chinese Biomedical Chinese National Knowledge Infrastructure and Literature database databases. Odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were used to assess the association. Overall, a significant elevated risk of stroke risk was associated with the rs1801133 polymorphism in all genetic models (homozygote model: OR 1.296, 95% CI 1.109-1.514; dominant model: OR 1.179, 95% CI 1.058-1.315; recessive model: OR 1.209, 95% CI 1.063-1.375; allele comparison model: OR 1.154, 95% CI 1.061-1.256). In the stratified analyses, significantly increased stroke risks were indicated among Asians in all genetic models (homozygote model: OR 1.726, 95% CI 1.314-2.267; dominant model: OR 1.535, 95% CI 1.282-1.838; recessive model: OR 1.452, 95% CI 1.160-1.818; allele comparison model: OR 1.403, 95% CI 1.211-1.626).The present meta-analysis suggests that rs1801133 polymorphism contributes to the risk of stroke, of note, in Asian populations.
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Affiliation(s)
- Wei Zhang
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, 110004, China
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12
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Methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms and susceptibility to ischemic stroke: A meta-analysis. Gene 2014; 535:359-64. [DOI: 10.1016/j.gene.2013.09.066] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 09/17/2013] [Accepted: 09/18/2013] [Indexed: 01/29/2023]
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They-They TP, Battas O, Nadifi S. Synergistic effect of MTHFR C677T and F2 G20210A polymorphisms on ischemic stroke. Neurosci Bull 2013; 29:725-30. [PMID: 24132798 DOI: 10.1007/s12264-013-1381-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Accepted: 04/01/2013] [Indexed: 11/30/2022] Open
Abstract
The predisposition to stroke might involve interactive effects among variants in several genes. We tested this hypothesis by examining the influence of polymorphisms in methylenetetrahydrofolate reductase (MTHFR) (C677T) and prothrombin (F2) (G20210A) as risk factors for stroke in Morocco. The polymerase chain reaction-restriction fragment length polymorphism methods were used to analyze DNA from 91 stroke patients and 182 controls. Association between the two polymorphisms and the risk of stroke was estimated by four-level models for the analysis of genetic interaction. Neither the MTHFR 677TT nor the F2 20210GA genotype showed any significant association compared to the MTHFR CC and F2 GG genotypes, respectively. An interactive effect between the MTHFR 677TT and F2 20210GA polymorphisms showed an increased risk of stroke. The odds ratios, in univariate and multivariate analysis, for the combined polymorphisms were 4.99 (95% CI, 1.75-14.2, P = 0.001) and 5.29 (95% CI, 1.63-17.1, P = 0.005), respectively.
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Affiliation(s)
- Thierry Paluku They-They
- Department of Clinical Neuroscience and Biological Psychiatry, Hassan II University, BP 9154, 10000, Casablanca, Morocco,
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Chmurzynska A, Malinowska AM, Twardowska-Rajewska J, Gawecki J. Elderly women: homocysteine reduction by short-term folic acid supplementation resulting in increased glucose concentrations and affecting lipid metabolism (C677T MTHFR polymorphism). Nutrition 2013; 29:841-4. [PMID: 23298970 DOI: 10.1016/j.nut.2012.09.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 09/05/2012] [Accepted: 09/06/2012] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Serum homocysteine levels show interindividual variation and are determined by nutritional factors, such as B-vitamin intake, and by age and genetic influences, such as the genotype of the methylenetetrahydrofolate reductase (MTHFR) gene. Recently, the relation between one-carbon and lipid metabolism has been shown. Therefore, we hypothesized that folic acid supplementation would not only decrease homocysteine concentrations but also affect lipid metabolism. The aim of the present study was to evaluate the impact of short-term folic acid supplementation on homocysteine and lipid metabolism in Polish women older than 60 y with different C677T MTHFR genotypes. METHODS One hundred twenty-two volunteers were supplemented with folic acid 400 μg/d for 8 wk. Folate intake was assessed using a food-frequency questionnaire. The serum homocysteine level was analyzed using high-performance liquid chromatography. Serum biomarkers were measured with a Vitalab Flexor biochemical analyzer. MTHFR genotyping was performed using the polymerase chain reaction restriction fragment length polymorphism method. RESULTS In the studied group, the MTHFR genotype frequencies were 0.14 for TT, 0.43 for CT, 0.43 for CC carriers. At baseline, the average folic acid and homocysteine concentrations were 12.16 ± 0.23 ng/mL and 7.94 ± 0.3 μmol/L, respectively. Folic acid supplementation lowered the serum homocysteine concentration. However, the dietary intervention also led to an increase in glucose concentrations (P < 0.01). The T-allele carriers had a larger waist circumference (P < 0.05) and a higher waist-to-hip ratio (P < 0.01). CONCLUSIONS In elderly women, a short-term, low-dose folic acid supplementation lowered the serum homocysteine level but also increased glucose concentrations. The C677T MTHFR polymorphism affects the waist-to-hip ratio and lipid metabolism.
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Affiliation(s)
- Agata Chmurzynska
- Department of Human Nutrition and Hygiene, Poznań University of Life Sciences, Poznań, Poland.
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15
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Yin G, Ming H, Zheng X, Xuan Y, Liang J, Jin X. Methylenetetrahydrofolate reductase C677T gene polymorphism and colorectal cancer risk: A case-control study. Oncol Lett 2012; 4:365-369. [PMID: 22844384 DOI: 10.3892/ol.2012.740] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 05/23/2012] [Indexed: 11/05/2022] Open
Abstract
We designed a case-control study to determine the plasma homocysteine (Hcy) level and evaluate the potential role of the methylenetetrahydrofolate reductase (MTHFR) C677T gene polymorphism in colorectal cancer (CRC). Total Hcy was quantified using the fluorescence polarization immunoassay (FPIA) on the IMx analyzer. Genomic DNA was analyzed by the real-time polymerase chain reaction (RT-PCR). The plasma levels of Hcy in the CRC group (12.63±3.11 μmol/l) were significantly higher compared with those in the control group (10.87±2.42 μmol/l; P<0.05). The frequency of the MTHFR 677TT genotype in CRC patients was markedly high. The MTHFR 677TT genotype was significantly correlated with an increased risk of CRC (odds ratio, 1.671; 95% confidence interval, 1.094-2.553; P=0.018). This study suggests that the MTHFR C677T polymorphism indicates susceptibility to CRC and is correlated with CRC pathogenesis, suggesting that the homozygous variant MTHFR C677T polymorphism is a candidate risk factor for CRC.
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Affiliation(s)
- Guancheng Yin
- Department of Vascular Surgery, Shandong Provincial Hospital, Shandong University, Jinan 250012
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Filho ILDS, Leite ACCB, Moura PG, Ribeiro GS, Cavalcante AC, Azevedo FCMD, Andrada-Serpa MJD. Genetic polymorphisms and cerebrovascular disease in children with sickle cell anemia from Rio de Janeiro, Brazil. ARQUIVOS DE NEURO-PSIQUIATRIA 2012; 69:431-5. [PMID: 21755116 DOI: 10.1590/s0004-282x2011000400004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Accepted: 03/14/2011] [Indexed: 11/22/2022]
Abstract
The aim of the present work was to examine possible genetic risk factors related to the occurrence of cerebrovascular disease (CVD) in Brazilian population, the frequency of β(S)-globin gene haplotypes and co-inheritance with α-thalassemia (-α(3.7kb)) and single nucleotide polymorphism of methylenetetrahydrofolate reductase (MTHFR-C677T), Factor V Leiden (FV-G1691A) and prothrombin (PT-G20210A) genes in children from Rio de Janeiro. Ninety four children with sickle cell anemia (SCA) were included, 24 patients with cerebrovascular involvement and 70 patients without CVD as control group. The mean age of children at the time of the cerebrovascular event was similar to the control group. The frequency of -α(3.7kb) thalassemia was similar in both groups (p=0.751). Children with Bantu/Atypical β(S)-globin gene haplotype presented 15 times more chance (OR=15.4 CI 95% 2.9-81.6) of CVD than the other β(S)-globin gene haplotypes. The C677T polymorphism of MTHFR gene was similar in both groups (p=0.085). No mutation in the FV Leiden or PT genes was found. A large study seems necessary to establish the role of these genetic polymorphisms in Brazilian miscegenated population.
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López-Cuenca A, Marín F, Roldán V, González-Conejero R, Hernández-Romero D, Valdés M, Lip GYH. Genetic polymorphisms and atrial fibrillation: Insights into the prothrombotic state and thromboembolic risk. Ann Med 2010; 42:562-75. [PMID: 20681943 DOI: 10.3109/07853890.2010.507601] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The pathophysiology of thromboembolism in atrial fibrillation (AF) is a multifactorial and complex process. Abnormalities of haemostasis, fibrinolysis, endothelium, and platelets have all been described in AF. This prothrombotic state observed in AF appears to be additive to the presence of clinical and echocardiography risk factors for thromboembolism. Nonetheless, the precise mechanistic pathway(s) leading to the prothrombotic state in AF remain to be elucidated. Of note, there are limited data on the influence of genetic polymorphisms in thromboembolic risk associated with AF. On the other hand, the response to coumarin derivatives depends on several factors, such as sex, age, diet, or interacting drugs. Optimal anticoagulation control is usually hampered by significant interindividual variability in dose requirements for a given target level of anticoagulation. There is increasing evidence that interindividual sensitivity and side-effects to coumarinics may be largely determined genetically. Thus, genetic polymorphisms could explain the individual risk of developing an adverse drug reaction (bleeding) or drug inefficacy (thrombosis) with oral anticoagulation. In this article, we provide an overview of the limited data about the possible influence of genetic polymorphisms on thromboembolic risk in AF, as well as the genetic influences on anticoagulant drug responsiveness.
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Affiliation(s)
- Angel López-Cuenca
- Department of Cardiology, Hospital Universitario Virgen Arrixaca, Murcia, Spain
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Stankovic S, Majkic-Singh N. Genetic aspects of ischemic stroke: coagulation, homocysteine, and lipoprotein metabolism as potential risk factors. Crit Rev Clin Lab Sci 2010; 47:72-123. [DOI: 10.3109/10408361003791520] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Malinowska A, Chmurzynska A. Polymorphism of genes encoding homocysteine metabolism-related enzymes and risk for cardiovascular disease. Nutr Res 2010; 29:685-95. [PMID: 19917447 DOI: 10.1016/j.nutres.2009.09.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2009] [Revised: 09/11/2009] [Accepted: 09/23/2009] [Indexed: 11/18/2022]
Abstract
The aim of this review is to present a general overview of the relationships among homocysteine metabolism, polymorphism of the genes encoding homocysteine metabolism-related enzymes, and the nutrients influencing the plasma homocysteine level. Combining these factors creates a profile of an individual's susceptibility to complex diseases associated with hyperhomocysteinemia. Homocysteine is an amino acid derived from the demethylation of methionine. Hyperhomocysteinemia is associated with an increased risk of several complex diseases, including cardiovascular diseases. The level of plasma homocysteine depends on the combined effects of genetic and environmental factors. Polymorphisms of genes encoding homocysteine metabolism-related enzymes, such as methylenetetrahydrofolate reductase, methionine synthase, methionine synthase reductase, and cystathionine beta-synthase, influence plasma homocysteine concentration and thereby cardiovascular health. On the other hand, homocysteine metabolism may be modulated by dietary intake of the nutrients involved in homocysteine metabolism (ie, folates, vitamin B(6), and vitamin B(12)). Thus, the appropriate health-promoting doses of these nutrients may vary among certain groups of individuals, depending on their genotypes and other risk factors for complex diseases. Better understanding of the relationship between genotype and nutrition influencing the plasma total homocysteine level and cardiovascular health may improve the cardiovascular diagnostic tests (ie, measurement of biologic markers). It could be possible to define the level of progression, severity, and susceptibility to disease much earlier than it is done now. In conclusion, the introduction of combined dietary and pharmacologic treatment would be possible at the initial stages of disease.
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Affiliation(s)
- Anna Malinowska
- Department of Human Nutrition and Hygiene, Poznan University of Life Sciences, Poznan, Poland
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