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El-Khawaga OY, Al-Azzawy MF, El-Dawa AN, ElSaid AM, Mustafa W, Saad M. Association study between genetic polymorphisms in MTHFR and stroke susceptibility in Egyptian population: a case-control study. Sci Rep 2024; 14:114. [PMID: 38167461 PMCID: PMC10762080 DOI: 10.1038/s41598-023-50277-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
Stroke is a major global disability cause, and genetic variables for multifactorial illnesses like stroke are crucial for precision medicine. The purpose of this study is to see if genetic variants in the MTHFR gene are associated with a higher risk of ischemic stroke among the Egyptian population. A case-control study was conducted at Mansoura University Hospital, involving 100 stroke patients and 150 healthy volunteers as the control group. Peripheral blood genomic DNA was isolated and single-nucleotide polymorphisms were genotyped using ARMS-PCR. The CT and TT genotypes of the C677T gene polymorphism exhibited substantial risks for having stroke disease [(OR 3.856; P ≤ 0.001); (OR 4.026; P ≤ 0.001), respectively]. The T allele was significantly more prevalent among patients compared to controls. (OR 2.517; (P = 0.001)). The over-dominant and dominant models demonstrated a substantial relationship between stroke groups at risk of developing stroke but not the Recessive model. An extensive connection was found between the MTHFR A1298C and stroke danger in three different inheritance models: dominant (CC + CA vs. AA), over-dominant (AA + CC vs AC), and allelic (C allele) (P < 0.001). A highly significant difference in blood pressure, total cholesterol, and triglycerides levels was found between patients and control. While there was no meaningful link discovered between genetic polymorphism with SBP, DBP, TG, LDL, VLDL among stroke group (P > 0.05 for each) except the CC genotype that was significantly associated with lower levels of TC and HDL when compared to CT + TT genotypes. The study evaluates a strong link among MTHFR mutations in genes and the probability to get stroke. The research significantly supports the use of MTHFR ((rs1801133) and (rs1801131) variations in stroke prediction.
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Affiliation(s)
- Omali Y El-Khawaga
- Biochemistry Division, Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt.
| | - Mohammed F Al-Azzawy
- Biochemistry Division, Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Aliaa N El-Dawa
- Biochemistry Division, Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Afaf M ElSaid
- Genetic Unit, Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Wessam Mustafa
- Neurology Department, Mansoura University Hospital, Mansoura, 35516, Egypt
| | - Mariam Saad
- Biochemistry Division, Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
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Kumar P, Mishra A, Prasad MK, Verma V, Kumar A. Relationship of Methylenetetrahydrofolate Reductase (MTHFR) C677T Variation With Susceptibility of Patients With Ischemic Stroke: A Meta-Analysis. Cureus 2022; 14:e28218. [PMID: 36017481 PMCID: PMC9393322 DOI: 10.7759/cureus.28218] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2022] [Indexed: 11/05/2022] Open
Abstract
Discovery and validation of genetic factors for multifactorial and polygenic disorders like stroke are needed to make progress in precision medicine. Although some traditional risk factors for stroke have been identified, they do not fully explain the pathophysiological mechanism of ischemic stroke. The research of genetic risk factors is becoming increasingly relevant in the understanding of stroke mechanisms and the finding of population-specific therapeutic targets. The methylenetetrahydrofolate reductase (MTHFR) gene is involved in homocysteine metabolism, and a high homocysteine level is a risk factor for stroke. Using a meta-analysis technique, we investigated the link between the MTHFR C677T gene polymorphism and the risk of ischemic stroke. We used the electronic databases PubMed, Medline, Embase, and Google Scholar to find articles in the Journal of Stroke. If heterogeneity was more than 50%, pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using a random-effects model; otherwise, a fixed-effects model was used. A total of 67 case-control studies with 17,704 cases and 21,981 controls met our inclusion criteria. The Asian population was represented by 41 studies, whereas the Caucasian population was represented by 26. Under the recessive model, a gene polymorphism at the 677 location of the MTHFR gene is related to an elevated risk of ischemic stroke (OR: 1.29, 95% CI: 1.22-1.37, P < 0.001). People who have the MTHFR C677T gene polymorphism have a greater risk of stroke than people who do not.
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Dong X, Wang J, Wang G, Wang J, Wang L, Du Y. MTHFR A1298C gene polymorphism on stroke risk: an updated meta-analysis. Genes Environ 2021; 43:40. [PMID: 34563265 PMCID: PMC8467014 DOI: 10.1186/s41021-021-00208-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/30/2021] [Indexed: 01/11/2023] Open
Abstract
Background Previous studies have shown the effect of MTHFR A1298C gene polymorphism on stroke risk. But the results of published studies remained inconclusive and controversial. So we conducted a meta-analysis to accurately estimate the potential association between MTHFR A1298C gene polymorphism and stroke susceptibility. Methods A systematic literature search on Embase, Pubmed, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI) and WanFang electronic database identified 40 articles including 5725 cases and 8655 controls. Strength of association was evaluated by pooled odds ratio (OR), 95% confidence interval (CI) and p value. Funnel plots and Begger’s regression test were applied for testing the publication bias. Statistical analysis of all data was performed by Stata 12.0. Results The meta-analysis results indicated a significant relationship between MTHFR gene A1298C polymorphisms and stoke risk under the C allelic genetic model (OR = 1.19, 95%CI = 1.07–1.32, p = 0.001), dominant genetic model (OR = 1.19, 95%CI = 1.06–1.33, p = 0.004) and recessive genetic model (OR = 1.43, 95%CI =1.15–1.77, p = 0.001). In subgroup analysis, we discovered obvious correlation in three genetic model of Asian, stroke type, adult by ethnicity, population, stroke type, source of control and case size. Additionally, in studies of control from hospital and case size equal 100, obvious correlation was also found in the three genetic model. Conclusions Our meta-analysis results indicated that there was evidence to support the correlation between MTHFR A1298C polymorphism and stroke susceptibility, especially in adults and ischemic stroke.
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Affiliation(s)
- Xiaobo Dong
- The Third department of Encephalopathy, Dongfang Hospital Beijing University of Chinese Medicine, No. 6, Area 1, Fangxing Garden Fangzhuang, Fengtai District, Beijing, 100078, China
| | - Jun Wang
- Department of Neurology, Chinese PLA General Hospital, Beijing, 100039, China
| | - Gesheng Wang
- The Third department of Encephalopathy, Dongfang Hospital Beijing University of Chinese Medicine, No. 6, Area 1, Fangxing Garden Fangzhuang, Fengtai District, Beijing, 100078, China.
| | - Jiayue Wang
- The Third department of Encephalopathy, Dongfang Hospital Beijing University of Chinese Medicine, No. 6, Area 1, Fangxing Garden Fangzhuang, Fengtai District, Beijing, 100078, China
| | - Lei Wang
- The Third department of Encephalopathy, Dongfang Hospital Beijing University of Chinese Medicine, No. 6, Area 1, Fangxing Garden Fangzhuang, Fengtai District, Beijing, 100078, China
| | - Yong Du
- The Third department of Encephalopathy, Dongfang Hospital Beijing University of Chinese Medicine, No. 6, Area 1, Fangxing Garden Fangzhuang, Fengtai District, Beijing, 100078, China
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Li M, Tang Y, Zhao EY, Chen CH, Dong LL. Relationship between MTHFR gene polymorphism and susceptibility to bronchial asthma and glucocorticoid efficacy in children. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2021; 23:802-808. [PMID: 34511169 DOI: 10.7499/j.issn.1008-8830.2105035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To study the association of methylenetetrahydrofolate reductase (MTHFR) gene polymorphism with susceptibility to bronchial asthma and glucocorticoid (GC) efficacy in children. METHODS A total of 173 children with bronchial asthma who were hospitalized between June 2018 and December 2020 were selected as the observation group. The children received aerosol inhalation of GC for three consecutive months. A total of 178 healthy children who underwent physical examination during the same period were selected as the control group. PCR was used to detect the genotypes of the MTHFR C677T for the two groups. The differences in genotype distribution between the two groups were analyzed. Children with different genotypes in the observation group were compared in terms of immunoglobulin E (IgE), interleukin-8 (IL-8), leukotriene B4 (LTB4), lung function, and clinical outcome before and after treatment. RESULTS TT genotype and T allele were significantly more frequent in the observation group than in the control group (P<0.001). TT/CT genotypes and T allele were independent risk factors for bronchial asthma (OR=6.615 and 7.055 respectively; P<0.001). After GC treatment, the children with CC, CT or TT genotypes experienced significantly decreased levels of IgE, IL-8, and LTB4 and significantly increased forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), and FEV1/FVC ratio (P<0.001). The children with TT genotype showed significantly lower levels of IL-8 and LTB4 than those with CC genotype, a significantly lower level of LTB4 than those with CT genotype, significantly higher FVC than those with CT genotype, and a significantly higher FEV1/FVC ratio than those with CC genotype (P<0.05). The children with TT genotype had better GC efficacy compared with those with CC genotype (P<0.05). TT genotype was an independent factor for good GC efficacy (OR=2.111, P=0.018). CONCLUSIONS MTHFR gene polymorphism is associated with asthma susceptibility and GC efficacy in children. Children carrying TT/CT genotypes have a higher risk of developing asthma, and those with TT genotype are more sensitive to GC treatment.
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Affiliation(s)
- Min Li
- Department of Respiratory Medicine, Children's Hospital Affiliated to Zhengzhou University/Henan Children's Hospital/Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - Yu Tang
- Department of Respiratory Medicine, Children's Hospital Affiliated to Zhengzhou University/Henan Children's Hospital/Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - Er-Yao Zhao
- Department of Respiratory Medicine, Children's Hospital Affiliated to Zhengzhou University/Henan Children's Hospital/Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - Chao-Hui Chen
- Department of Respiratory Medicine, Children's Hospital Affiliated to Zhengzhou University/Henan Children's Hospital/Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - Li-Li Dong
- Department of Respiratory Medicine, Children's Hospital Affiliated to Zhengzhou University/Henan Children's Hospital/Zhengzhou Children's Hospital, Zhengzhou 450018, China
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M'barek L, Sakka S, Meghdiche F, Turki D, Maalla K, Dammak M, Kallel C, Mhiri C. MTHFR (C677T, A1298C), FV Leiden polymorphisms, and the prothrombin G20210A mutation in arterial ischemic stroke among young tunisian adults. Metab Brain Dis 2021; 36:421-428. [PMID: 33400068 DOI: 10.1007/s11011-020-00663-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/25/2020] [Indexed: 12/15/2022]
Abstract
Arterial ischemic stroke (AIS) in young adults is less common in older adults, but the underlying pathogenesis and risk factors are more multi-faceted. The role of inherited thrombophilia such as 5, 10-methylenetetrahydrofolate reductase (MTHFR) gene polymorphism, (C677T and A1298C), factor V of Leiden (FVL) polymorphism, and the prothrombin G20210A mutations remains unclear. This study aims to evaluate the role of prothrombin genetic factor in AIS among young adults in Tunisia and to assess the synergistic effect between thrombogenic mutations in the pathogenesis of AIS. In this case-control study, blood samples were collected from patients and healthy controls, all matched for age and gender. The difference between them is evaluated by using the chi-square test. The odds ratio (OR) was carried out to evaluate the associations between each polymorphism and AIS risk using a binary logistic regression model. Values were considered statistically significant when p < 0.05. Patients carrying simultaneously the MTHFR polymorphisms (677T and 1298C) have a higher risk to develop AIS compared to controls. The heterozygous variants FVL increased the risk of AIS only when it is associated with MTHFR C677T or MTHFR A1298C polymorphisms. In conclusion, our study confirmed the involvement of MTHFR polymorphisms as AIS's important risk factors. The existence of FVL polymorphism or prothrombin G20210A mutation alone doesn't correlate with the occurrence of stroke. We assume that the presence of both MTHFR and FVL polymorphisms has a synergistic effect and increased the risk of the AIS.
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Affiliation(s)
- Lamia M'barek
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia.
- Clinical Investigation Center (CIC), Habib Bourguiba University Hospital, Sfax, Tunisia.
| | - Salma Sakka
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Fatma Meghdiche
- Laboratory of Hematology, Habib Bourguiba University Hospital, University of Monastir, Monastir, Tunisia
| | - Dhaker Turki
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Khadija Maalla
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Mariem Dammak
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Choumous Kallel
- Laboratory of Hematology, Habib Bourguiba University Hospital, University of Monastir, Monastir, Tunisia
| | - Chokri Mhiri
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR-12-SP-19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
- Clinical Investigation Center (CIC), Habib Bourguiba University Hospital, Sfax, Tunisia
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Xie C, Ping P, Ma Y, Wu Z, Chen X. Correlation between methylenetetrahydrofolate reductase gene polymorphism and oligoasthenospermia and the effects of folic acid supplementation on semen quality. Transl Androl Urol 2019; 8:678-685. [PMID: 32038964 DOI: 10.21037/tau.2019.11.17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background The present study investigated the correlation between 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and oligoasthenospermia, as well as the effects of folic acid supplementation on semen quality. Methods The present study was a case control study. The PCR-chip assay was applied to analyze the distribution characteristics of the frequencies and genotypes of the MTHFR C677T allele in 167 Han Chinese patients with idiopathic male infertility (including 86 patients with oligospermia and 81 patients with asthenospermia) and in 78 males with normal semen parameters. Moreover, homocysteine (Hcy) levels were assessed for the different groups. Semen quality was measured following three months of folic acid supplementation for the oligospermia and asthenospermia groups. Results The cytosine-thymine (CT) genotype (50% vs. 39.5%) and the thymine-thymine (TT) genotype (51.2% vs. 7.7%) carriers in the oligospermia group exhibited significantly higher percentages compared with those of the control group. The percentage of the CT genotype carriers in the asthenospermia group was significantly higher compared with that of the control group (59.3% vs. 50%), while the frequency of the TT genotype was significantly increased (22.2% vs. 7.7%). Furthermore, serum Hcy levels in the oligospermia and asthenospermia groups were significantly higher compared with those of the control group. The data also demonstrated that sperm density increased significantly following three months of folic acid supplementation to patients with oligospermia or asthenospermia. In these patients, the highest increase was noted for the subjects carrying the TT genotype. Conclusions The MTHFR C677T mutation and the elevated Hcy levels are important risk factors for the development of oligoasthenospermia. Folic acid supplementation can significantly improve sperm density.
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Affiliation(s)
- Chong Xie
- Center for Reproductive Medicine, the International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.,Shanghai Key laboratory of Embryo Original Diseases, Shanghai 200030, China.,Shanghai Municipal Key Clinical Specialty, Shanghai 200030, China
| | - Ping Ping
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China
| | - Yi Ma
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China
| | - Zhengmu Wu
- Center for Reproductive Medicine, the International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.,Shanghai Key laboratory of Embryo Original Diseases, Shanghai 200030, China.,Shanghai Municipal Key Clinical Specialty, Shanghai 200030, China
| | - Xiangfeng Chen
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China.,Shanghai Human Sperm Bank, Shanghai 200135, China
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Serum folate and vitamin B12 levels are not associated with the incidence risk of atherosclerotic events over 12 years: the Korean Genome and Epidemiology Study. Nutr Res 2019; 63:34-41. [DOI: 10.1016/j.nutres.2018.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 11/18/2022]
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Major Polymorphisms of Genes Involved in Homocysteine Metabolism in Malaria Patients in Ouagadougou, Burkina Faso. Malar Res Treat 2017; 2017:3468276. [PMID: 28607799 PMCID: PMC5451846 DOI: 10.1155/2017/3468276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/18/2017] [Indexed: 01/08/2023] Open
Abstract
This study analyzed the four main polymorphisms of the genes in homocysteine metabolism in malaria patients. Forty-two randomly selected subjects, diagnosed positive for Plasmodium falciparum, were included. The four genotypes were detected by real-time PCR using the MTHFR 677C>T, MTHFR 1298A>C, MTR 2756A>G, and MTRR 66A>G detection kit (Sacace Biotechnologies REF: T01002-96-S). The results revealed frequencies of 90% 677CC, 10% 677CT, and 00% 677TT for MTHFR C677T; 78.6% 1298AA, 19% 1298AC, and 2.4% 1298CC for MTHFR A1298C; 61.9% 2756AA, 33.3% 2756AG, and 4.8% 2756GG for MTR A2756G; and 50% of 66AA, 45% of 66AG, and 5% of 66GG for MTRR A66G. Correlations were found between A2756G MTR genotypes and parasitaemia (P = 0.02), MTRR A66G and hemoglobin genotypes (P = 0.009), and MTHFR A1298C and sex (P = 0.01). This study demonstrated for the first time an association between the A2756G MTR alleles and Plasmodium falciparum malaria in Burkina Faso and gave an overview of the genotypic distribution of the major SNPs influencing the metabolism of homocysteine.
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Blood and CSF biomarkers in brain subcortical ischemic vascular disease: Involved pathways and clinical applicability. J Cereb Blood Flow Metab 2016; 36:55-71. [PMID: 25899297 PMCID: PMC4758557 DOI: 10.1038/jcbfm.2015.68] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/20/2015] [Accepted: 03/21/2015] [Indexed: 12/26/2022]
Abstract
Vascular dementia is the second most common type of dementia after Alzheimer’s disease (AD). Subcortical ischemic vascular disease refers to a form of vascular cognitive impairment characterized by the presence of diffuse white matter hyperintensities (WMHs) and multiple lacunar infarcts. These neuroimaging findings are mainly caused by cerebral small-vessel disease (cSVD) and relate to aging and cognitive impairment, but they can also be silent and highly prevalent in otherwise healthy individuals. We aimed to review studies on blood and cerebrospinal fluid (CSF) markers related to the presence of WMHs and lacunar infarcts that have been conducted in the past in large population-based studies and in high-risk selected patients (such as those with vascular risk factors, vascular cognitive impairment, or AD). Relevant associations with the presence and progression of cSVD have been described in the blood for markers related to inflammatory processes, endothelial damage and coagulation/fibrinolysis processes, etc. Also, different combinations of CSF markers might help to differentiate between etiologic types of dementia. In the future, to translate these findings into clinical practice and use biomarkers to early diagnosis and monitoring vascular cognitive impairment would require the replication of candidate markers in large-scale, multicenter, and prospectively designed studies.
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Wei LK, Au A, Menon S, Gan SH, Griffiths LR. Clinical Relevance of MTHFR, eNOS, ACE, and ApoE Gene Polymorphisms and Serum Vitamin Profile among Malay Patients with Ischemic Stroke. J Stroke Cerebrovasc Dis 2015; 24:2017-25. [DOI: 10.1016/j.jstrokecerebrovasdis.2015.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 04/09/2015] [Indexed: 10/23/2022] Open
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The early-onset preeclampsia is associated with MTHFR and FVL polymorphisms. Arch Gynecol Obstet 2014; 291:1303-12. [DOI: 10.1007/s00404-014-3561-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 11/27/2014] [Indexed: 10/24/2022]
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Zhang MJ, Hu ZC, Yin YW, Li BH, Liu Y, Liao SQ, Gao CY, Li JC, Zhang LL. A meta-analysis of the relationship between MTHFR gene A1298C polymorphism and the risk of adult stroke. Cerebrovasc Dis 2014; 38:425-32. [PMID: 25472665 DOI: 10.1159/000369122] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 10/15/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The association between methylenetetrahydrofolate reductase (MTHFR) gene A1298C polymorphism and adult stroke remains controversial. The present article was designed to clarify this relationship through pooled analysis of the numerous epidemiological studies focusing on this association. METHODS We comprehensively searched all published papers in electronic database including PubMed, Embase, Web of Science, Chinese Biomedical Literature on disc (CBMdisc) and China National Knowledge Infrastructure (CNKI) up to 2013. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) for allelic (C allele vs. A allele), additive (CC vs. AA), dominant (CC+AC vs. AA), and recessive (CC vs. AA+AC) models were calculated. Subgroup and sensitivity analyses were performed to detect the heterogeneity and examine the reliability of results, respectively. Begg's funnel plots and Egger's regression test were used to assess the potential publication bias. RESULTS A total of fifteen studies containing 2,361 cases and 2,653 controls were included in the final meta-analysis. The combined results of overall analysis showed that there was significant association between MTHFR gene A1298C polymorphism and adult stroke (allelic model: OR=1.36, 95% CI=1.11-1.67; additive model: OR=1.88, 95% CI=1.12-3.18; dominant model: OR=1.33, 95% CI=1.08-1.65 and recessive model: OR=1.77, 95% CI=1.07-2.94, respectively). On subgroup analysis by ethnicity of study population, significant association was shown in meta-analysis based on Asian population (allelic model: OR=1.40, 95% CI=1.19-1.65; additive model: OR=2.58, 95% CI=1.34-4.96; dominant model: OR=1.44, 95% CI=1.20-1.73 and recessive model: OR=2.12, 95% CI=1.20-3.76, respectively), but not in Caucasian population (allelic model: OR=1.30, 95% CI=0.93-1.82; additive model: OR=1.65, 95% CI=0.81-3.33; dominant model: OR=1.17, 95% CI=0.86-1.61 and recessive model: OR=1.70, 95% CI=0.83-3.50, respectively). In addition, the heterogeneity was effectively removed or decreased by limiting the included studies with population of Asian ethnicity. Furthermore, the corresponding pooled ORs were not materially changed in all genetic models of meta-analysis after limiting the included studies with population-based controls. However, except the recessive model, publication bias presented in the allelic, additive, dominant models identified by the Begg's funnel plots and Egger's regression test. CONCLUSIONS In conclusion, the overall analysis suggests that MTHFR gene A1298C polymorphism plays an important role in the development of adult stroke. Genotype CC of MTHFR-1298A/C could increase the risk of stroke and may act as a predictor for clinical evaluation, especially in the Asian population. More studies with large-scale and different ethnicities are required to further confirm our findings.
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Affiliation(s)
- Ming-Jie Zhang
- Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Yuzhong District, Chongqing, PR China
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Boraldi F, Costa S, Rabacchi C, Ciani M, Vanakker O, Quaglino D. Can APOE and MTHFR polymorphisms have an influence on the severity of cardiovascular manifestations in Italian Pseudoxanthoma elasticum affected patients? Mol Genet Metab Rep 2014; 1:477-482. [PMID: 27896127 PMCID: PMC5121367 DOI: 10.1016/j.ymgmr.2014.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 11/03/2014] [Indexed: 11/26/2022] Open
Abstract
Background The clinical phenotype of Pseudoxanthoma elasticum (PXE) affected patients, although progressive with age, is very heterogeneous, even in the presence of identical ABCC6 mutations, thus suggesting the occurrence of modifier genes. Beside typical skin manifestations, the cardiovascular (CV) system, and especially the peripheral vasculature, is frequently and prematurely compromised. Methods and results A cohort of 119 Italian PXE patients has been characterized for apolipoprotein E (APOE) and methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms by PCR. The severity of the clinical phenotype has been quantified according to the Phenodex PXE International score system. Statistical analysis (chi2 test, odd ratio, regression analysis, analysis of variance) were done by GraphPad. Data demonstrate that the frequency of APOE alleles is similar in PXE patients and in healthy subjects and that the allelic variant E2 confers a protection against the age-related increase of CV manifestations. By contrast, PXE patients are characterized by high frequency of the MTHFR-T677T polymorphism. With age, CV manifestations in T677T, but also in C677T, patients are more severe than those associated with the C677C genotype. Interestingly, compound heterozygosity for C677T and A1298C polymorphisms is present in 70% of PXE patients. Conclusions PXE patients may be screened for these polymorphisms in order to support clinicians for a better management of disease-associated CV complications.
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Affiliation(s)
- Federica Boraldi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sonia Costa
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Claudio Rabacchi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Miriam Ciani
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Olivier Vanakker
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Daniela Quaglino
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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14
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Affiliation(s)
- Jonathon P Fanning
- From the School of Medicine (J.P.F., A.J.W., A.A.W., J.F.F.) and Critical Care Research Group (CCRG), The Prince Charles Hospital (J.P.F., J.F.F.), The University of Queensland, Brisbane, Queensland, Australia; Department of Medical Imaging (A.J.W.) and Adult Intensive Care Services (J.F.F.), The Prince Charles Hospital, Brisbane, Queensland, Australia; Department of Medical Imaging, Monash Medical Centre, Melbourne, Victoria, Australia (A.J.W.); and Department of Neurology, The Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia (A.A.W.).
| | - Allan J Wesley
- From the School of Medicine (J.P.F., A.J.W., A.A.W., J.F.F.) and Critical Care Research Group (CCRG), The Prince Charles Hospital (J.P.F., J.F.F.), The University of Queensland, Brisbane, Queensland, Australia; Department of Medical Imaging (A.J.W.) and Adult Intensive Care Services (J.F.F.), The Prince Charles Hospital, Brisbane, Queensland, Australia; Department of Medical Imaging, Monash Medical Centre, Melbourne, Victoria, Australia (A.J.W.); and Department of Neurology, The Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia (A.A.W.)
| | - Andrew A Wong
- From the School of Medicine (J.P.F., A.J.W., A.A.W., J.F.F.) and Critical Care Research Group (CCRG), The Prince Charles Hospital (J.P.F., J.F.F.), The University of Queensland, Brisbane, Queensland, Australia; Department of Medical Imaging (A.J.W.) and Adult Intensive Care Services (J.F.F.), The Prince Charles Hospital, Brisbane, Queensland, Australia; Department of Medical Imaging, Monash Medical Centre, Melbourne, Victoria, Australia (A.J.W.); and Department of Neurology, The Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia (A.A.W.)
| | - John F Fraser
- From the School of Medicine (J.P.F., A.J.W., A.A.W., J.F.F.) and Critical Care Research Group (CCRG), The Prince Charles Hospital (J.P.F., J.F.F.), The University of Queensland, Brisbane, Queensland, Australia; Department of Medical Imaging (A.J.W.) and Adult Intensive Care Services (J.F.F.), The Prince Charles Hospital, Brisbane, Queensland, Australia; Department of Medical Imaging, Monash Medical Centre, Melbourne, Victoria, Australia (A.J.W.); and Department of Neurology, The Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia (A.A.W.)
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15
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Zhou BS, Bu GY, Li M, Chang BG, Zhou YP. Tagging SNPs in the MTHFR gene and risk of ischemic stroke in a Chinese population. Int J Mol Sci 2014; 15:8931-40. [PMID: 24853127 PMCID: PMC4057767 DOI: 10.3390/ijms15058931] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/07/2014] [Accepted: 05/08/2014] [Indexed: 11/16/2022] Open
Abstract
Stroke is currently the leading cause of functional impairments worldwide. Folate supplementation is inversely associated with risk of ischemic stroke. Methylenetetrahydrofolate reductase (MTHFR) is an important enzyme involved in folate metabolism. The aim of this study is to examine whether genetic variants in MTHFR gene are associated with the risk of ischemic stroke and fasting total serum homocysteine (tHcy) level. We genotyped nine tag SNPs in the MTHFR gene in a case-control study, including 543 ischemic stroke cases and 655 healthy controls in China. We found that subjects with the rs1801133 TT genotype and rs1801131 CC genotype had significant increased risks of ischemic stroke (adjusted odds ratio (OR) = 1.82, 95% confidence interval (CI): 1.27–2.61, p = 0.004; adjusted OR = 1.99, 95% CI: 1.12–3.56, p = 0.01) compared with subjects with the major alleles. Haplotype analysis also found that carriers of the MTHFR CTTCGA haplotype (rs12121543-rs13306553-rs9651118-rs1801133-rs2274976-rs1801131) had a significant reduced risk of ischemic stroke (adjusted OR = 0.53, 95% CI: 0.35–0.82) compared with those with the CTTTGA haplotype. Besides, the MTHFR rs1801133 and rs9651118 were significantly associated with serum levels of tHcy in healthy controls (p < 0.0001 and p = 0.02). These findings suggest that variants in the MTHFR gene may influence the risk of ischemic stroke and serum tHcy.
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Affiliation(s)
- Bao-Sheng Zhou
- Department of Neurosurgery, Tianjin First Center Hospital, Tianjin 300192, China.
| | - Guo-Yun Bu
- Department of Spine Surgery, Tianjin Hospital, Tianjin 300211, China.
| | - Mu Li
- Department of Neurosurgery, Tianjin First Center Hospital, Tianjin 300192, China.
| | - Bin-Ge Chang
- Department of Neurosurgery, Tianjin First Center Hospital, Tianjin 300192, China.
| | - Yi-Pin Zhou
- Department of Neurosurgery, Tianjin Third Central Hospital, Tianjin 300170, China.
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16
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Kang S, Wu Y, Liu L, Zhao X, Zhang D. Association of the A1298C polymorphism in MTHFR gene with ischemic stroke. J Clin Neurosci 2014; 21:198-202. [DOI: 10.1016/j.jocn.2013.04.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 04/01/2013] [Indexed: 11/16/2022]
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17
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Kovács KR, Czuriga D, Bereczki D, Bornstein NM, Csiba L. Silent Brain Infarction – A Review of Recent Observations. Int J Stroke 2012; 8:334-47. [DOI: 10.1111/j.1747-4949.2012.00851.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silent brain infarction is a cerebral ischaemic event evident on brain imaging without any clinical symptom. Silent brain infarction is often detected in apparently healthy, elderly people and in different selected patient groups as well. Lately, several studies were carried out in order to identify the clinical conditions leading to silent brain infarction. A large number of clinical and paraclinical parameters were found to increase silent brain infarction prevalence, and the continuously growing list of risk factors revealed that the majority of them are similar to those related to stroke. Accordingly, some consider silent brain infarction the preclinical stage of clinically overt stroke. This point of view emphasizes the early recognition and management of silent brain infarction-related risk factors, and a great need for comparative studies, which could elicit the most sensitive indicators of the increased silent brain infarction risk, especially the ones that could be cost-effectively screened in the large populations as well.
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Affiliation(s)
- Katalin Réka Kovács
- Department of Neurology, University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
| | - Dániel Czuriga
- Institute of Cardiology, University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
| | - Dániel Bereczki
- Department of Neurology, Semmelweis University, Budapest, Hungary
| | - Natan M. Bornstein
- Department of Neurology, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - László Csiba
- Department of Neurology, University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
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18
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Han IB, Kim OJ, Ropper AE, Kim HS, Cho YK, Teng YD, Kim NK. Association between kinase insert domain-containing receptor gene polymorphisms and silent brain infarction: a Korean study. J Neurol Sci 2012; 318:85-9. [PMID: 22520092 DOI: 10.1016/j.jns.2012.03.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 11/25/2022]
Abstract
BACKGROUND Kinase insert domain-containing receptor (KDR), vascular endothelial growth factor receptor-2, play a pivotal role in endothelial dysfunction, which may lead to silent brain infarction (SBI). We evaluated whether single nucleotide polymorphisms (SNPs) of KDR genes are associated with increased risk of SBI in a Korean population. METHODS A total of 383 patients with SBI and 387 controls were genotyped for the KDR -604T>C, 1192G>A, and 1719A>T SNPs. We separately analyzed this association according to the age (age≥65 and age<65) and the gender. We also compared haplotype frequencies between SBI patients and controls. RESULTS Genotype frequencies for three SNPs did not differ significantly between SBI patients and controls. In addition, haplotype analysis for three SNPs did not show a difference between patients and controls. However, the frequency of genotype of KDR -604T>C was significantly associated with an increased risk of SBI in the age<65 years old group (AOR=1.515, 95% CI, 1.003 to 2.289, p=0.048) and in male group (AOR=1.596, 95% CI, 1.018 to 2.503, p=0.042). CONCLUSIONS KDR -604T>C SNP may serve as genetic markers for the increased risk of SBI among the younger (<65 years) or male only Korean subpopulations.
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Affiliation(s)
- In-Bo Han
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam, Republic of Korea
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19
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Park HK, Kim MC, Kim SM, Jo DJ. Assessment of two missense polymorphisms (rs4762 and rs699) of the angiotensinogen gene and stroke. Exp Ther Med 2012; 5:343-349. [PMID: 23251296 PMCID: PMC3524280 DOI: 10.3892/etm.2012.790] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 10/25/2012] [Indexed: 12/17/2022] Open
Abstract
The renin-angiotensin system has an important role in the pathogenesis of stroke. We investigated whether two missense single nucleotide polymorphisms (SNPs; rs4762, Thr207Met, T207M; and rs699, Met268Thr, M268T) of angiotensinogen (AGT; serpin peptidase inhibitor, clade A, member 8) are associated with the development and clinical phenotypes of ischemic stroke (IS) and intracerebral hemorrhage (ICH). We analyzed 197 stroke patients (120 IS and 77 ICH) and 301 control subjects. The patients were classified into subgroups in accordance to the scores of the National Institutes of Health Stroke Survey (NIHSS, <6 and ≥6) and Modified Barthel Index (MBI, <60 and ≥60). Multiple logistic regression models were used to analyze the genotype and allele distributions of each SNP. One of the missense SNPs, rs4762 (T207M) was associated with the development of ICH (P=0.038 in log-additive model and P=0.021 in allele distributions). The T allele frequency of T207M was higher in the ICH group (16.2%) compared with the control group (9.6%). The TC haplotype frequency differed significantly between the ICH and control groups (P=0.014). With regard to clinical features, T207M correlated with the NIHSS scores of the ICH patients (P=0.039 in codominant1, P=0.015 in dominant, P=0.011 in overdominant and P=0.039 in log-additive models). However, the two missense SNPs, rs4762 and rs699, were not associated with IS and its clinical features, including NIHSS and MBI scores. These data suggest that a missense SNP (rs4762, T207M) of the AGT gene may be associated with the development of ICH and contribute to the neurological functional levels of ICH patients.
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APOE, MTHFR, LDLR and ACE Polymorphisms Among Angami and Lotha Naga Populations of Nagaland, India. J Community Health 2011; 36:975-85. [DOI: 10.1007/s10900-011-9397-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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