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Gu L, Wang Q, Xu G, Liu D. Functional genetic variation in 3'UTR of PARP1 indicates a decreased risk and a better severity of ischemic stroke. Int J Neurosci 2024; 134:804-809. [PMID: 36448327 DOI: 10.1080/00207454.2022.2151907] [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: 06/10/2021] [Revised: 01/17/2022] [Accepted: 03/17/2022] [Indexed: 12/05/2022]
Abstract
Aim of the study: Polymorphisms of DNA repair enzyme gene may alter the ability of damage repair, ischemic stroke susceptibility and outcome. This study aimed to explore the association of polymorphisms in PARP1 and the effects of interactions between genes in Chinese.Materials and methods: A total of 500 patients and 500 healthy controls were enrolled for genotyping. Results: Clinical information analysis revealed higher levels of alcohol and smoking exposure in patients with ischemic stroke, as well as chronic conditions such as diabetes, hypertension, and higher serum triglycerides concentration. In addition, Polymorphism in PARP1 rs8679 was significantly associated with the decreased ischemic stroke risk. Patients harboring the PARP1 rs8679 AG/GG genotype had a better initial stroke, and as for the mRNA level of PARP1, it was suppressed with mutant genotype in comparison with the wild genotype. Finally, the suppressed of PARP1 was induced by gain-binding ability of miR-124-5p through 3'UTR directly binding.Conclusions: In conclusion, our study demonstrates that the SNP rs8679 in PARP1 3'-UTR might act as a protective factor for the outcome of patients with ischemic stroke.
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Affiliation(s)
- Lujun Gu
- Department of Physical Medicine and Rehabilitation, Jiangyin Fifth People's Hospital, Wuxi, China
| | - Qingguang Wang
- Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, China
| | - Gangtao Xu
- Department of Physical Medicine and Rehabilitation, Jiangyin Fifth People's Hospital, Wuxi, China
| | - Dinghua Liu
- Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, China
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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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Roa-Díaz ZM, Teuscher J, Gamba M, Bundo M, Grisotto G, Wehrli F, Gamboa E, Rojas LZ, Gómez-Ochoa SA, Verhoog S, Vargas MF, Minder B, Franco OH, Dehghan A, Pazoki R, Marques-Vidal P, Muka T. Gene-diet interactions and cardiovascular diseases: a systematic review of observational and clinical trials. BMC Cardiovasc Disord 2022; 22:377. [PMID: 35987633 PMCID: PMC9392936 DOI: 10.1186/s12872-022-02808-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Both genetic background and diet are important determinants of cardiovascular diseases (CVD). Understanding gene-diet interactions could help improve CVD prevention and prognosis. We aimed to summarise the evidence on gene-diet interactions and CVD outcomes systematically. METHODS We searched MEDLINE® via Ovid, Embase, PubMed®, and The Cochrane Library for relevant studies published until June 6th 2022. We considered for inclusion cross-sectional, case-control, prospective cohort, nested case-control, and case-cohort studies as well as randomised controlled trials that evaluated the interaction between genetic variants and/or genetic risk scores and food or diet intake on the risk of related outcomes, including myocardial infarction, coronary heart disease (CHD), stroke and CVD as a composite outcome. The PROSPERO protocol registration code is CRD42019147031. RESULTS AND DISCUSSION We included 59 articles based on data from 29 studies; six articles involved multiple studies, and seven did not report details of their source population. The median sample size of the articles was 2562 participants. Of the 59 articles, 21 (35.6%) were qualified as high quality, while the rest were intermediate or poor. Eleven (18.6%) articles adjusted for multiple comparisons, four (7.0%) attempted to replicate the findings, 18 (30.5%) were based on Han-Chinese ethnicity, and 29 (49.2%) did not present Minor Allele Frequency. Fifty different dietary exposures and 52 different genetic factors were investigated, with alcohol intake and ADH1C variants being the most examined. Of 266 investigated diet-gene interaction tests, 50 (18.8%) were statistically significant, including CETP-TaqIB and ADH1C variants, which interacted with alcohol intake on CHD risk. However, interactions effects were significant only in some articles and did not agree on the direction of effects. Moreover, most of the studies that reported significant interactions lacked replication. Overall, the evidence on gene-diet interactions on CVD is limited, and lack correction for multiple testing, replication and sample size consideration.
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Affiliation(s)
- Zayne M Roa-Díaz
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland. .,Graduate School for Health Sciences, University of Bern, Bern, Switzerland.
| | - Julian Teuscher
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Magda Gamba
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland.,Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Marvin Bundo
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland.,Graduate School for Health Sciences, University of Bern, Bern, Switzerland.,Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
| | - Giorgia Grisotto
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland.,Graduate School for Health Sciences, University of Bern, Bern, Switzerland.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Faina Wehrli
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Edna Gamboa
- School of Nutrition and Dietetics, Health Faculty, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Lyda Z Rojas
- Nursing Research and Knowledge Development Group GIDCEN, Fundación Cardiovascular de Colombia, Floridablanca, Colombia
| | - Sergio A Gómez-Ochoa
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Sanne Verhoog
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland.,Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | | | - Beatrice Minder
- Public Health & Primary Care Library, University Library of Bern, University of Bern, Bern, Switzerland
| | - Oscar H Franco
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Abbas Dehghan
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Raha Pazoki
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK.,Department of Epidemiology and Biostatistics, MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK.,CIRTM Centre for Inflammation Research and Translational Medicine, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Pedro Marques-Vidal
- Department of Medicine, Internal Medicine, Lausanne University Hospital (CHUV) and University of Lausanne, Lausanne, Switzerland
| | - Taulant Muka
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
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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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Apolipoprotein E ε4 Polymorphism as a Risk Factor for Ischemic Stroke: A Systematic Review and Meta-Analysis. DISEASE MARKERS 2022; 2022:1407183. [PMID: 35154509 PMCID: PMC8831053 DOI: 10.1155/2022/1407183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/21/2021] [Accepted: 01/05/2022] [Indexed: 11/18/2022]
Abstract
Introduction Rising studies indicate that the apolipoprotein E (APOE) gene is related to the susceptibility of ischemic stroke (IS). However, certain consensus is limited by the lack of a large sample size of researches. This meta-analysis was performed to explore the potential association between the APOE gene and IS. Methods To identify relevant case control studies in English publications by October 2020, we searched PubMed, Embase, Web of Science, and the Cochrane Library. Pooled odds ratios (ORs) with fixed- or random-effect models and corresponding 95% confidence intervals (CIs) were calculated to analyze potential associations. Results A total of 55 researches from 32 countries containing 12207 IS cases and 27742 controls were included. The association between APOE gene ε4 mutation and IS was confirmed (ε4 vs. ε3 allele: pooled OR = 1.374, 95% CI, 1.214-1.556; ε2/ε4 vs. ε3/ε3: pooled OR = 1.233, 95% CI, 1.056-1.440; ε3/ε4 vs. ε3/ε3: pooled OR = 1.340, 95% CI, 1.165-1.542; ε4/ε4 vs. ε3/ε3: pooled OR = 1.833, 95% CI, 1.542-2.179; and APOE ε4 carriers vs. non-ε4 carriers: pooled OR = 1.377; 95% CI, 1.203-1.576). Interestingly, APOE ε4 mutation showed a dose-response correlation with IS risk (ε4/ε4 vs. ε2/ε4: pooled OR = 1.625; 95% CI, 1.281-2.060; ε4/ε4 vs. ε3/ε4: pooled OR = 1.301; 95% CI, 1.077-1.571). Similar conclusions were drawn in the small artery disease (SAD) subtype, but not in large artery atherosclerosis (LAA) or in cardioaortic embolism (CE), by subgroup analysis. Conclusions These observations reveal that specific APOE ε4 mutation was significantly associated with the risk of IS in a dose-dependent manner, while APOE ε4 mutation was related to SAD subtype onset without a cumulative effect.
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Moderating effect of ppar-γ on the association of c-reactive protein and ischemic stroke in patients younger than 60. Gene 2022; 809:146029. [PMID: 34673211 DOI: 10.1016/j.gene.2021.146029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 09/03/2021] [Accepted: 10/14/2021] [Indexed: 01/08/2023]
Abstract
AIM The aim of this study was to evaluate the moderating effect of peroxisome proliferator activated receptor-γ (PPAR-γ) gene variants on the association of serum C-reactive protein level (CRP) and ischemic stroke (IS). MATERIAL AND METHODS A total of 114 patients with IS and 135 healthy controls were included. RESULTS After adjustment for age, sex, total cholesterol, LDL and HDL cholesterol, triglycerides, hypertension, smoking, body mass index and previous therapy with antihypertensive and/or statins, PPAR-γ had statistically significant moderating effect on association of serum CRP level and IS in patients younger than 60. In participants with PPAR CG or GG genotype level of CRP and IS were not statistically significantly associated (OR = 1.00; 95% CI 0.90-1.10; p = 0.933), but in participants with PPAR CC genotype, the association of serum CRP level and IS was significant (OR = 1.67; 95% CI 1.21-2.31; p = 0.002). CONCLUSION In patients with PPAR CC genotype the association of serum CRP level and IS was significant.
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7
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Ajoolabady A, Wang S, Kroemer G, Penninger JM, Uversky VN, Pratico D, Henninger N, Reiter RJ, Bruno A, Joshipura K, Aslkhodapasandhokmabad H, Klionsky DJ, Ren J. Targeting autophagy in ischemic stroke: From molecular mechanisms to clinical therapeutics. Pharmacol Ther 2021; 225:107848. [PMID: 33823204 PMCID: PMC8263472 DOI: 10.1016/j.pharmthera.2021.107848] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/23/2021] [Accepted: 04/01/2021] [Indexed: 01/18/2023]
Abstract
Stroke constitutes the second leading cause of death and a major cause of disability worldwide. Stroke is normally classified as either ischemic or hemorrhagic stroke (HS) although 87% of cases belong to ischemic nature. Approximately 700,000 individuals suffer an ischemic stroke (IS) in the US each year. Recent evidence has denoted a rather pivotal role for defective macroautophagy/autophagy in the pathogenesis of IS. Cellular response to stroke includes autophagy as an adaptive mechanism that alleviates cellular stresses by removing long-lived or damaged organelles, protein aggregates, and surplus cellular components via the autophagosome-lysosomal degradation process. In this context, autophagy functions as an essential cellular process to maintain cellular homeostasis and organismal survival. However, unchecked or excessive induction of autophagy has been perceived to be detrimental and its contribution to neuronal cell death remains largely unknown. In this review, we will summarize the role of autophagy in IS, and discuss potential strategies, particularly, employment of natural compounds for IS treatment through manipulation of autophagy.
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Affiliation(s)
- Amir Ajoolabady
- University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Shuyi Wang
- University of Wyoming College of Health Sciences, Laramie, WY 82071, USA; School of Medicine Shanghai University, Shanghai 200444, China
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France; Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France; Suzhou Institute for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China; Karolinska Institute, Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Vienna Biocenter (VBC), Vienna, Austria; Department of Medical Genetics, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Vladimir N Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA; Institute for Biological Instrumentation of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow region 142290, Russia
| | - Domenico Pratico
- Alzheimer's Center at Temple, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts, Worcester, Massachusetts, USA; Department of Psychiatry, University of Massachusetts, Worcester, Massachusetts, USA
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA
| | - Askiel Bruno
- Department of Neurology, Medical College of Georgia, Augusta University, GA 30912, USA
| | - Kaumudi Joshipura
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Center for Clinical Research and Health Promotion, University of Puerto Rico Medical Sciences Campus, San Juan, PR 00936-5067, Puerto Rico
| | | | - Daniel J Klionsky
- Life Sciences Institute and Departments of Molecular, Cellular and Developmental Biology and Biological Chemistry, University of Michigan, Ann Arbor 48109, USA.
| | - Jun Ren
- Department of Laboratory Medicine and Pathology, University of Washington Seattle, Seattle, WA 98195, USA; Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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Carotid Intima-Media Thickness, Genetic Risk, and Ischemic Stroke: A Family-Based Study in Rural China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 18:ijerph18010119. [PMID: 33375320 PMCID: PMC7795493 DOI: 10.3390/ijerph18010119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Carotid intima-media thickness (cIMT) has been associated with an elevated risk of ischemic stroke (IS) in several studies, but the results are inconsistent. We investigated whether the association between cIMT and IS varied across different IS subtypes, and further assessed gene-cIMT interactions' association with IS risk. METHODS A total of 1048 IS cases (795 large-artery atherosclerosis (LAA) cases, 103 small-vessel occlusion (SVO) cases, and 150 other subtypes) and 2696 IS-free controls across 2179 families were included in the analysis. Self-reported IS cases were confirmed through medical records' review and head imaging by computed tomography and/or magnetic resonance imaging. The mean values of the common cIMT obtained in bilateral distal and proximal carotid artery segments were used. The genotype information of rs2910164 polymorphism in microRNA-146a (miR-146a) was also collected. RESULTS We found that cIMT was significantly associated with a higher risk of IS and LAA subtype but not SVO subtype in the multivariate-adjusted models. The odds ratio (OR) and 95% confidence interval (CI) in the highest quartile versus the lowest quartile of cIMT was 2.48 (1.92-3.20) for IS and 2.75 (2.08-3.64) for LAA (both p trend <0.001). The results also showed that there was a significant interaction between cIMT and rs2910164 genotype with the risk of IS (p interaction = 0.03) and LAA (p interaction = 0.02). The associations of cIMT with IS and LAA were strengthened among participants carried rs2910164_GG genotype compared with those with rs2910164_CC genotype. CONCLUSIONS Our results indicate that higher cIMT levels were significantly associated with IS and LAA subtype but not SVO subtype, and the relations were modified by rs2910164 polymorphism in miR-146a.
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Fang YY, Zhang JH. MFG-E8 alleviates oxygen-glucose deprivation-induced neuronal cell apoptosis by STAT3 regulating the selective polarization of microglia. Int J Neurosci 2020; 131:15-24. [PMID: 32098538 DOI: 10.1080/00207454.2020.1732971] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background: Ischemic stroke is a complex pathological process, involving inflammatory reaction, energy metabolism disorder, free radical injury, cell apoptosis and other aspects. Accumulating evidences have revealed that MFG-E8 had a protective effect on multiple organ injuries. However, the comprehensive function and mechanism of MFG-E8 in ischemic brain remain largely unclear.Methods: BV-2 cells were treated with recombinant murine MFG-E8 (rmMFG-E8) or/and Colivelin TFA after exposing for 4 h with oxygen glucose deprivation (OGD). Cell viability and apoptosis were assessed by MTT assay and Flow cytometry. RT-qPCR and Western blot assays were applied to examine the expression levels of MFG-E8, apoptosis-related proteins and M1/M2 polarization markers.Results: Our results demonstrated that OGD significantly inhibited microglial viability and facilitated apoptosis. In addition, we found that OGD downregulated MFG-E8 expression, and MFG-E8 inhibited OGD-induced microglial apoptosis and promoted microglial M2 polarization. In terms of mechanism, we proved that MFG-E8 regulated OGD-induced microglial M1/M2 polarization by inhibiting p-STAT3 and SOCS3 expressions, which was reversed by STAT3 activator (Colivelin TFA). Finally, we verified MFG-E8 alleviated OGD-induced neuronal cell apoptosis by M2 polarization of BV-2 cells.Conclusions: We demonstrated that MFG-E8 reduced neuronal cell apoptosis by enhancing activation of microglia via STAT3 signaling. Therefore, we suggested that MFG-E8 might provide a novel mechanism for ischemic stroke.
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Affiliation(s)
- Ying-Ying Fang
- Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong Province, P.R. China
| | - Jing-Hui Zhang
- Department of Rehabilitation, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, P.R. China.,Guangdong Association of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, P.R. China
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10
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Ludhiadch A, Vasudeva K, Munshi A. Establishing molecular signatures of stroke focusing on omic approaches: a narrative review. Int J Neurosci 2020; 130:1250-1266. [PMID: 32075476 DOI: 10.1080/00207454.2020.1732964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Stroke or 'brain attack' is considered to be the major cause of mortality and morbidity worldwide after myocardial infraction. Inspite of the years of research and clinical practice, the pathogenesis of stroke still remains incompletely understood. Omics approaches not only enable the description of a huge number of molecular platforms but also have a potential to recognize new factors associated with various complex disorders including stroke. The most significant development among all other omics technologies over the recent years has been seen by genomics which is a powerful tool for exploring the genetic architecture of stroke. Genomics has decisively established itself in stroke research and by now wealth of data has been generated providing new insights into the physiology and pathophysiology of stroke. However, the efficacy of genomic data is restricted to risk prediction only. Omics approaches not only enable the description of a huge number of molecular platforms but also have a potential to recognize new factors associated with various complex disorders including stroke. The data generated by omics technologies enables clinicians to provide detailed insight into the makeup of stroke in individual patients, which will further help in developing diagnostic procedures to direct therapies. Present review has been compiled with an aim to understand the potential of integrated omics approach to help in characterization of mechanisms leading to stroke, to predict the patient risk of getting stroke by analyzing signature biomarkers and to develop targeted therapeutic strategies.
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Affiliation(s)
- Abhilash Ludhiadch
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab
| | - Kanika Vasudeva
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab
| | - Anjana Munshi
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab
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11
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Fan M, Lv J, Yu C, Guo Y, Bian Z, Yang S, Yang L, Chen Y, Li F, Zhai Y, Wang P, Chen J, Chen Z, Qi L, Li L. Family History, Tobacco Smoking, and Risk of Ischemic Stroke. J Stroke 2019; 21:175-183. [PMID: 31161762 PMCID: PMC6549063 DOI: 10.5853/jos.2018.03566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/13/2019] [Accepted: 04/18/2019] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Both genetic factors and smoking are associated with ischemic stroke (IS) risk. However, little is known about the potential interaction of these factors. We aimed to assess whether smoking and a positive family history interact to increase the risk of IS. METHODS The nationwide prospective study recruited 210,000 men and 300,000 women in 2004 to 2008 at ages 30 to 79 years. During 9.7 years of follow-up, we documented 16,923 and 20,656 incident IS cases in men and women without major chronic diseases at baseline, respectively. Multivariable Cox regression models were used to examine associations between family history and IS. Likelihood ratio tests were used to test the smoking-family history interactions on IS. RESULTS About 67.8% (n=135,168) of men ever smoked regularly compared with 2.7% (n=7,775) of women. Among men, a significant interaction between family history and smoking on IS was observed (P for interaction=0.03), with more pronounced association between family history and IS among ever-regular smokers (hazard ratio [HR], 1.21; 95% confidence interval [CI], 1.16 to 1.27) than among never-smokers (HR, 1.11; 95% CI, 1.01 to 1.23). The association between family history and IS among ex-smokers after more than 10 years of cessation (HR, 1.01; 95% CI, 0.85 to 1.20) appeared similar to that among never-smokers. Among women, a similar but not significant interaction between family history and smoking on IS was observed. Ever-regular smokers who had a family history of stroke had the highest risk of IS. CONCLUSIONS Among Chinese men, the association of family history with IS was accentuated by smoking, and such accentuation tended to be lowered by cessation.
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Affiliation(s)
- Mengyu Fan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
| | - Jun Lv
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
- Key Laboratory of Molecular Cardiovascular Sciences (Peking University), Ministry of Education, Beijing, China
- Peking University Institute of Environmental Medicine, Beijing, China
| | - Canqing Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
| | - Yu Guo
- Chinese Academy of Medical Sciences, Beijing, China
| | - Zheng Bian
- Chinese Academy of Medical Sciences, Beijing, China
| | - Songchun Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
| | - Ling Yang
- Clinical Trial Service Unit & Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Yiping Chen
- Clinical Trial Service Unit & Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Feifei Li
- NCDs Prevention and Control Department, Qingdao Centers for Disease Control, Qingdao, China
| | - Yaoming Zhai
- NCDs Prevention and Control Department, Qingdao Centers for Disease Control, Qingdao, China
| | - Ping Wang
- NCDs Prevention and Control Department, Liuzhou Centers for Disease Control, Liuzhou, China
| | - Junshi Chen
- China National Center for Food Safety Risk Assessment, Beijing, China
| | - Zhengming Chen
- Clinical Trial Service Unit & Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Lu Qi
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
- Department of Nutrition, Harvard School of Public Health, Boston, MA, USA
| | - Liming Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
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12
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He W, Wang Q, Gu L, Zhong L, Liu D. NOX4 rs11018628 polymorphism associates with a decreased risk and better short-term recovery of ischemic stroke. Exp Ther Med 2018; 16:5258-5264. [PMID: 30542483 PMCID: PMC6257675 DOI: 10.3892/etm.2018.6874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 10/10/2018] [Indexed: 11/06/2022] Open
Abstract
Single-nucleotide polymorphisms (SNPs) play an important role in our susceptibility to disease, the severity of illness and the way our body responds to treatment. This study evaluated the impact of three polymorphisms on the susceptibility and functional outcome of ischemic stroke (IS). Three hundred and eight patients and 300 healthy volunteers were enrolled. Polymorphisms of NOX4 rs11018628, MTHFR rs1801133 and NEIL3 rs12645561 were detected in both groups. Smoking (P<0.001), drinking (P<0.001), hypertension (P<0.001) and diabetes (P=0.006), as traditional vascular risk factors for IS, were confirmed in our study. Logistic regression analyses with adjustment for age, sex, smoking, drinking, diabetes, hypertension and total cholesterol showed that the variant genotypes of NOX4 rs11018628 were associated with a significantly decreased risk (Dominant model: OR=0.32, 95% CI=0.22–0.48, P<0.001) and a better short-term recovery of IS (Dominant model: OR=0.57, 95% CI=0.35–0.95, P=0.029). This study demonstrates that the NOX4 rs11018628 SNP is associated with decreased risk in developing IS and better short-term recovery of patients. This suggests that the genetic variant of NOX4 rs11018628 may contribute to the etiology of IS.
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Affiliation(s)
- Wei He
- Department of Physical Medicine and Rehabilitation, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, P.R. China
| | - Qingguang Wang
- Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, P.R. China
| | - Lujun Gu
- Department of Physical Medicine and Rehabilitation, Jiangyin Fifth People's Hospital, Wuxi, Jiangsu 214400, P.R. China
| | - Lingling Zhong
- Department of Neurology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223001, P.R. China
| | - Dinghua Liu
- Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, P.R. China
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Meng D, He W, Huang P, Liu D, Zhong L, Yu R, Li J. Polymorphism of PARP-1 indicates an increased risk and a worse initial severity of ischemic stroke. Per Med 2018; 15:355-360. [PMID: 30260276 DOI: 10.2217/pme-2018-0007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AIM Polymorphisms of DNA repair enzyme gene may alter the ability to repair damage and in turn may contribute to ischemic stroke susceptibility and outcome. METHODS We selected 316 ischemic stroke patients and 302 healthy controls. Then we genotyped SNPs of PARP-1 rs3219119, rs2271347 and APE1 rs1130409 in patient and control groups. RESULTS Polymorphism in PARP-1 rs2271347 was significantly associated with increased ischemic stroke risk (additive model: OR: 1.74; 95% CI: 1.03-2.93; p = 0.037). Patients harboring the PARP-1 rs2271347 GA/AA genotype had a worse initial stroke (additive model: OR: 1.85; 95% CI: 1.10-3.11; p = 0.021). CONCLUSION Our study suggests that genetic variant of rs2271347 may contribute to the etiology of ischemic stroke.
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Affiliation(s)
- Dianhuai Meng
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China
| | - Wei He
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, PR China.,Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, PR China
| | - Peng Huang
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, PR China.,Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Dinghua Liu
- Department of Neurology, The Affiliated Jiangyin People's Hospital of Southeast University Medical College, Wuxi, PR China
| | - Lingling Zhong
- Department of Neurology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, PR China
| | - Rongbin Yu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, PR China.,Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Jianan Li
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China
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14
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Yue YH, Liu LY, Hu L, Li YM, Mao JP, Yang XY, Dila NM. The association of lipid metabolism relative gene polymorphisms and ischemic stroke in Han and Uighur population of Xinjiang. Lipids Health Dis 2017. [PMID: 28623937 PMCID: PMC5474057 DOI: 10.1186/s12944-017-0491-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background The present study is aimed to evaluate difference of lipid metabolism related gene single nucleotide polymorphisms (SNPs) with ischemic stroke (IS) in Han and Uighur population of Xinjiang, China. Methods Four hundred eight patients with ischemic stroke and 347 unrelated healthy individuals of age and sex matched were genotyped for Apolipoprotein A5 (ApoA5), lipoprotein lipase (LPL), Cholesteryl ester transfer protein (CETP) and low-density lipoprotein receptor (LDL-R) genes. Their mutation difference was analyzed by SNaP shot techniques. GeneMapper4.1 SPSS20.0 software was used for data management and analysis. Using a single locus analysis, the distribution difference of genotype loci in ischemic stroke cases and controls were detected to assess the genetic risk factors of ischemic stroke. Results Significance differences of genotype distribution in ischemic stroke cases and controls were observed in LDLR rs688 in Han and Uighur population in recessive model from analysis of single gene locus. It also was found that dramatic difference of triglyceride (TG) of LPL rs328 and systolic blood pressure in CETP rs708277 of total population. In binary logistic regression analysis of total studied population, ischemic stroke was observed significantly associated with LDLR rs688 both addictive model (TT/CC, adjusted OR = 1.47, 95% CI = 1.04–2.07) and recessive model (TT/CT + CC, adjusted Odds ratio (OR) = 2.66, 95% Confidence Interval (CI) = 1.37–5.14). In Han population, ischemic stroke was observed significantly associated with rs688 both in addictive model (TT/CC, adjusted OR = 3.27, 95% CI = 1.06–10.05). In Uighur population, no significant association was found between gene polymorphisms and the risk of ischemic stroke. Combined analysis of multiple gene and loci, interaction effects of LDLR rs688 C/T, ApoA5 rs662799 A/G and CETP rs708272 C/T denoted a significant influence on IS susceptibility. Conclusion Single nucleotide polymorphisms of lipid metabolism relative gene were significantly associated with the morbidity of ischemic stroke in Han population. The interaction effects of rs688 C/T with ApoA5 rs662799 A/G and CETP rs708272 C/T promoted the occurrence of IS.
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Affiliation(s)
- Yun-Hua Yue
- Department of Neurology, Yangpu Hospital Tongji University School of Medicine, No. 450 Tengyue Road, Shanghai, 200090, China.
| | - Ling-Yun Liu
- Department of Neurology, Yangpu Hospital Tongji University School of Medicine, No. 450 Tengyue Road, Shanghai, 200090, China
| | - Liang Hu
- Department of Neurology, Yangpu Hospital Tongji University School of Medicine, No. 450 Tengyue Road, Shanghai, 200090, China
| | - You-Mei Li
- Department of Neurology, Yangpu Hospital Tongji University School of Medicine, No. 450 Tengyue Road, Shanghai, 200090, China
| | - Jie-Ping Mao
- Department of Neurology, Friendship Hospital to Urumqi, Urumqi, 830049, China
| | - Xiao-Ying Yang
- Department of Neurology, Friendship Hospital to Urumqi, Urumqi, 830049, China
| | - Na-Mu Dila
- Department of Neurology, Friendship Hospital to Urumqi, Urumqi, 830049, China
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15
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He W, Huang P, Liu D, Zhong L, Yu R, Li J. Polymorphism of the XRCC1 Gene Is Associated with Susceptibility and Short-Term Recovery of Ischemic Stroke. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13101016. [PMID: 27763529 PMCID: PMC5086755 DOI: 10.3390/ijerph13101016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/08/2016] [Accepted: 10/13/2016] [Indexed: 12/17/2022]
Abstract
Background: Base excision repair (BER) is the primary DNA repair system with the ability to fix base lesions caused by oxidative damage. Genetic variants influencing the BER pathway may affect the susceptibility and the outcomes of ischemic stroke. Here, we examined how single nucleotide polymorphisms (SNPs) associated with BER impact susceptibility and short-term recovery of ischemic stroke. Methods: We selected 320 ischemic stroke patients and 303 controls. Then we genotyped SNPs of NEIL1 rs4462560, NEIL3 rs12645561 and XRCC1 rs25487 in both groups. Results: Polymorphism in XRCC1 rs25487 was significantly associated with reduced ischemic stroke (IS) risk (dominant model: OR = 0.53, 95% CI = 0.36-0.79, p = 0.002), a milder initial stroke (dominant model: OR = 0.57, 95% CI = 0.33-0.98, p = 0.043), and also a better short-term recovery (dominant model: OR = 0.57, 95% CI = 0.35-0.92, p = 0.022). No association was observed in the other two SNPs. Conclusions: Our study suggests that the genetic variant of XRCC1 rs25487 may contribute to the etiology of ischemic stroke.
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Affiliation(s)
- Wei He
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- Department of Rehabilitation Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Peng Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Dinghua Liu
- Department of Neurology, Medical College, The Affiliated Jiangyin People's Hospital of Southeast University, Wuxi 214400, China.
| | - Lingling Zhong
- Department of Neurology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an 223300, China.
| | - Rongbin Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Jianan Li
- Department of Rehabilitation Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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Kumar A, Kumar P, Prasad M, Misra S, Kishor Pandit A, Chakravarty K. Association between Apolipoprotein ε4 Gene Polymorphism and Risk of Ischemic Stroke: A Meta-Analysis. Ann Neurosci 2016; 23:113-21. [PMID: 27647962 DOI: 10.1159/000443568] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 04/25/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Previous studies examining the association of apolipoprotein E (APOE) gene polymorphism with the risk of ischemic stroke (IS) have yielded conflicting results. Therefore, we performed a meta-analysis to investigate the association between APOE ε4 gene polymorphism and risk of IS. SUMMARY A literature search for genetic association studies published before May 30, 2015, was conducted in the PubMed, EMBASE and Google Scholar databases. The following search terms were used: (apolipoprotein E) or (APOE) and (ε4) and (polymorphism) or (polymorphisms) and ('ischemic stroke' or 'IS') and ('cerebral infarction' or 'CI') and ('genetic polymorphism' or 'single nucleotide polymorphisms' or 'SNP'). ORs and 95% CIs were used to calculate the strength of association. Begg's funnel plot was used to assess the potential for publication bias. In our meta-analysis, 26 case-control studies involving 6,397 IS cases and 19,053 controls were included. Overall significant association between carrier of ε4 allele and risk of IS was observed (OR 1.43, 95% CI 1.10-1.85, p = 0.007). In the subgroup analysis based on ethnicity, a significant association between Apo ε4 carrier and risk of IS was observed in Asian studies (OR 1.53, 95% CI 1.04-2.25, p = 0.031) whereas borderline significant association between APO ε4 carrier and risk of IS was observed in Caucasian studies (OR 1.36, 95% CI 0.95-1.93, p = 0.093). KEY MESSAGES Our meta-analysis suggests that APOE ε4 allele is associated with higher risk of IS in Asian population as compared to Caucasian population.
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Affiliation(s)
- Amit Kumar
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Pradeep Kumar
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Manya Prasad
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Shubham Misra
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Awadh Kishor Pandit
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Kamalesh Chakravarty
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
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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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Karahan Z, Ugurlu M, Ucaman B, Veysel Ulug A, Kaya I, Cevik K, Sahin Adiyaman M, Oztürk O, Iyem H, Ozdemir F. Association Between ACE Gene Polymorphism and QT Dispersion in Patients with Acute Myocardial Infarction. Open Cardiovasc Med J 2016; 10:117-21. [PMID: 27347229 PMCID: PMC4897009 DOI: 10.2174/1874192401610010117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 02/02/2016] [Accepted: 02/10/2016] [Indexed: 11/22/2022] Open
Abstract
Background: Angiotensin converting enzyme (ACE) gene polymorphism is associated with high renin-angiotensin system causing myocardial fibrosis and ventricular repolarization abnormality. Based on these findings, this study was designed to determine the association between ACE gene insertion/deletion (I/D) polymorphism and QT dispersion after acute myocardial infarction (MI). Objective and Methods: The study included 108 patients with acute MI. Blood samples were obtained from all the patients for genomic DNA analysis. ECGs were recorded at baseline and at the end of a 6-month follow up. The OT dispersion was manually calculated. Results: The mean age of the patients was 57.5 ±9.9 years (ranging from 36 to 70). The
patients with DD genotype showed longer QT dispersion than patients with II or
DI genotype at the baseline, while at the end of the six-month follow up the
patients with DI genotype showed longer QT dispersion than patients with DD or
II genotypes. However, the magnitude of the QT dispersion prolongation was
higher in patients carrying the ACE D allele than patients who were not carrying
it, at baseline and at the end of six-month follow up (52.5 ±2.6 msn vs.
47.5±2.1 msn at baseline, 57±3.2 msn vs. 53±2.6 msn in months, P: 0.428 and
P: 0.613, respectively). Conclusion: Carriers of the D allele of ACE gene I/D polymorphism may be associated with QT dispersion prolongation in patients with MI.An interaction of QT dispersion and ACE gene polymorphism may be associated with an elevation of serum type I-C terminal pro-collagen concentration, possibly leading to myocardial fibrosis, and increased action potential duration.
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Affiliation(s)
- Zulkuf Karahan
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Murat Ugurlu
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Berzal Ucaman
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Ali Veysel Ulug
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Ilyas Kaya
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Kemal Cevik
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | | | - Onder Oztürk
- Gazi Yasargil Education and Research Hospital, Cardiology, Diyarbakir, Turkey
| | - Hikmet Iyem
- Gazi Yasargil Education and Research Hospital, Cardiovascular Surgery, Diyarbakir, Turkey
| | - Ferit Ozdemir
- Gazi Yasargil Education and Research Hospital, Cardiovascular Surgery, Diyarbakir, Turkey
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Das S, Kaul S, Jyothy A, Munshi A. Association of APOE (E2, E3 and E4) gene variants and lipid levels in ischemic stroke, its subtypes and hemorrhagic stroke in a South Indian population. Neurosci Lett 2016; 628:136-41. [PMID: 27329241 DOI: 10.1016/j.neulet.2016.06.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 05/31/2016] [Accepted: 06/17/2016] [Indexed: 11/24/2022]
Abstract
In the present study we evaluated the association of APOE (E2/E3/E4) polymorphism with ischemic stroke (n=620), its subtypes and hemorrhagic stroke (n=250) in a South Indian population from Telangana. The genotypes were determined using PCR-RFLP while lipid levels were measured using commercially available kits. We found significant difference in the genotypic distribution between hemorrhagic stroke patients and controls for certain genetic models [E2/E2 vs. E2/E4; E3/E3 vs. E2/E3; E3/E3 vs. E2/E4; E4/E4 vs. E2/E3; E4/E4 vs.E2/E4 and E3 vs. E4]. However, no significant difference was observed in genotypic distribution between ischemic stroke patients and controls. On analysing the genotypic distribution between ischemic and hemorrhagic stroke patients, statistically significant difference was observed in specific genetic models [E2/E2 vs. E2/E4; E3/E3 vs. E2/E3; E3/E3 vs. E2/E4; E4/E4 vs. E2/E3 and E4/E4 vs. E2/E4]. In ischemic stroke subtypes analysing for alleles E3 vs. E2 and E3 vs. E4, we found significant association with intracranial large artery (p=0.01), cardioembolic stroke (p=0.001 and p=0.0004) and lacunar stroke (p=0.02). Analysing the association of various genotypes with different lipid levels significant association was observed for VLDL (P=0.000) and for triglyceride (P=0.000) levels with E2/E4 and E3/E4 genotypes in ischemic stroke but not in hemorrhagic stroke. In conclusion, our results suggest that APOE polymorphism does seem to play a role in hemorrhagic stroke and also in the development of specific subtypes of ischemic stroke. Further, in ischemic stroke VLDL and triglycerides levels were found to be significantly associated with E2/E4 and E3/E4 genotypes.
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Affiliation(s)
- Satrupa Das
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad 500016, India; Dr. NTR University of Health Sciences, Vijayawada, Andhra Pradesh, India
| | - Subhash Kaul
- Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad 500082, India
| | - Akka Jyothy
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad 500016, India
| | - Anjana Munshi
- Centre for Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, Punjab, India.
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Ghasemi MR, Zargari P, Pirhoushiaran M, Sasan nezhad P, Azarpazhooh MR, Sadr-Nabavi A. Is Apolipoprotein Genotype a Reason For the Excessive Incidence of Stroke in Persian Population? ACTA ACUST UNITED AC 2016. [DOI: 10.17795/jbm-5417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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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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Luo M, Li J, Sun X, Lai R, Wang Y, Xu X, Sheng W. Interactions among Candidate Genes Selected by Meta-Analyses Resulting in Higher Risk of Ischemic Stroke in a Chinese Population. PLoS One 2015; 10:e0145399. [PMID: 26710338 PMCID: PMC4692506 DOI: 10.1371/journal.pone.0145399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 12/03/2015] [Indexed: 11/19/2022] Open
Abstract
Ischemic stroke (IS) is a multifactorial disorder caused by both genetic and environmental factors. The combined effects of multiple susceptibility genes might result in a higher risk for IS than a single gene. Therefore, we investigated whether interactions among multiple susceptibility genes were associated with an increased risk of IS by evaluating gene polymorphisms identified in previous meta-analyses, including methylenetetrahydrofolate reductase (MTHFR) C677T, beta fibrinogen (FGB, β-FG) A455G and T148C, apolipoprotein E (APOE) ε2-4, angiotensin-converting enzyme (ACE) insertion/deletion (I/D), and endothelial nitric oxide synthase (eNOS) G894T. In order to examine these interactions, 712 patients with IS and 774 controls in a Chinese Han population were genotyped using the SNaPshot method, and multifactor dimensionality reduction analysis was used to detect potential interactions among the candidate genes. The results of this study found that ACE I/D and β-FG T148C were significant synergistic contributors to IS. In particular, the ACE DD + β-FG 148CC, ACE DD + β-FG 148CT, and ACE ID + β-FG 148CC genotype combinations resulted in higher risk of IS. After adjusting for potential confounding IS risk factors (age, gender, family history of IS, hypertension history and history of diabetes mellitus) using a logistic analysis, a significant correlation between the genotype combinations and IS patients persisted (overall stroke: adjusted odds ratio [OR] = 1.57, 95% confidence interval [CI]: 1.22-2.02, P < 0.001, large artery atherosclerosis subtype: adjusted OR = 1.50, 95% CI: 1.08-2.07, P = 0.016, small-artery occlusion subtype: adjusted OR = 2.04, 95% CI: 1.43-2.91, P < 0.001). The results of this study indicate that the ACE I/D and β-FG T148C combination may result in significantly higher risk of IS in this Chinese population.
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Affiliation(s)
- Man Luo
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jiaoxing Li
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xunsha Sun
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Rong Lai
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yufang Wang
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiaowei Xu
- Department of Neurology, Weifang People’s Hospital, Weifang, Shandong, China
- * E-mail: (WLS); (XWX)
| | - Wenli Sheng
- Department of Neurology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
- * E-mail: (WLS); (XWX)
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Cao Y, Fan X, Zhu W, Ni G, Qian Y, Han Y, Ma M. Association of C7673T polymorphism in apolipoprotein B gene with ischemic stroke in the Chinese population: a meta-analysis. Int J Neurosci 2015; 126:584-92. [PMID: 26004908 DOI: 10.3109/00207454.2015.1052429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Epidemiological studies have evaluated the association between the C7673T polymorphism in apolipoprotein B (apoB) gene and ischemic stroke (IS), but the results are still debatable even in the Chinese population. This meta-analysis was therefore designed to clarify these controversies. METHODS All of the relevant studies were identified from PubMed, Embase, Chinese National Knowledge Infrastructure database and Chinese Wanfang database up to 31 October 2014. Statistical analyses were conducted with Revman 5.2 and STATA 12.0 software. Odds ratio (OR) with 95% confidence interval (CI) values were applied to evaluate the strength of the association. A fixed or random effect model was selected for pooling data based on the heterogeneity test. Publication bias was assessed by Begg's test and Egger's test. RESULTS A significant association was found between the C7673T polymorphism in apoB gene and IS under the heterozygous genetic model (OR = 1.868, 95% CI = 1.160-3.007) and the allelic genetic model (OR = 1.742, 95% CI = 1.294-2.346), respectively. In the subgroup analysis by the geographic region, T allele could increase the risk of IS in northern Chinese (OR = 2.359, 95% CI: 1.425-3.907), but not in southern Chinese individuals (OR = 1.485, 95% CI: 0.778-2.832). Further stratification for source of controls showed that statistical significance was found among the population-based studies. CONCLUSION Our meta-analysis revealed that C7673T polymorphism in apoB gene was significantly associated with increased IS risk in the Chinese population.
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Affiliation(s)
- Yuezhou Cao
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China.,b 2 Department of Geriatiric Neurology , First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Xinying Fan
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China
| | - Wusheng Zhu
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China
| | - Guihua Ni
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China
| | - Yun Qian
- b 2 Department of Geriatiric Neurology , First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yunfei Han
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China
| | - Minmin Ma
- a 1 Department of Neurology, Jinling Hospital , Southern Medical University , Nanjing , China
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Wu G, Cai H, Cai H, Chen Z, Tan L, Qi H, Cai Y. Effect of the -148C/T, 448G/A, and -854G/A Polymorphisms of the β-Fibrinogen Gene on the Risk of Ischemic Stroke in Chinese Population. J Stroke Cerebrovasc Dis 2015; 24:1577-90. [PMID: 25890854 DOI: 10.1016/j.jstrokecerebrovasdis.2015.03.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/20/2015] [Accepted: 03/17/2015] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Several investigations have been performed to examine the influence of the β-fibrinogen (FGβ) gene polymorphisms on the risk of ischemic stroke, but the results of these studies are controversial. Our study aimed at investigating whether the FGβ gene (-148 C/T, 448 G/A, and -854 G/A) polymorphisms were associated with susceptibility to ischemic stroke by conducting meta-analysis. METHODS Relevant studies were identified from 4 Chinese databases, PUBMED and EMBASE before May 30, 2014. The strength of association was evaluated by the odds ratio with 95% confidence interval. Inconsistency index and the Cochran's Q statistic were used to check heterogeneity. Publication bias was tested using funnel plots and Egger's regression test. RESULTS Thirty-two independent studies with 4311 cases and 4124 controls were included. Significant association between -148 C/T polymorphism and the risk of ischemic stroke was found in overall analysis and middle-age, but not in young adults and elderly people. Similarly, association was also observed for -854 G/A polymorphism, especially in cerebral arterial main trunk infarction (MCI) and cerebral penetrating arterial infarction (PCI). However, no significance was found between 448 G/A polymorphism and ischemic stroke in Chinese people; likewise, no evidence of a significant association was observed when stratified according to the subtype of ischemic stroke (MCI and PCI). CONCLUSIONS These results suggest that -148 C/T and -854 G/A polymorphisms probably contribute to susceptibility of ischemic stroke.
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Affiliation(s)
- Guangliang Wu
- Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Haiyan Cai
- Guangxi University of Chinese Medicine, Nanning, China
| | - Haobin Cai
- Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhao Chen
- Guangxi University of Chinese Medicine, Nanning, China
| | - Lei Tan
- Guangxi University of Chinese Medicine, Nanning, China
| | - Huitao Qi
- Zhuhai Hospital of Guangdong Provincial Traditional Chinese Medical Hospital, Guangzhou University of Chinese Medicine, Zhuhai, China
| | - Yefeng Cai
- Department of Internal Neurology, Guangdong Provincial Traditional Chinese Medicine Hospital, Guangzhou, China.
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Kopyta I, Niemiec P, Balcerzyk A, Emich-Widera E, Pilarska E, Pienczk-Ręcławowicz K, Kaciński M, Wendorff J, Nowak T, Iwanicki T, Sarecka-Hujar B, Zak I. Fibrinogen alpha and beta gene polymorphisms in pediatric stroke--case-control and family based study. Eur J Paediatr Neurol 2015; 19:176-80. [PMID: 25555432 DOI: 10.1016/j.ejpn.2014.11.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 11/27/2014] [Accepted: 11/28/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND/PURPOSE Data on the role of the -455G > A polymorphism of the gene encoding β fibrinogen subunit (FGB) and the Thr312Ala polymorphism of the gene for the α fibrinogen subunit (FGA) in childhood ischemic stroke are insufficient. Therefore the aim of the study was to evaluate a possible association between these two polymorphisms and arterial ischemic stroke. METHODS The study group consisted of 85 children after ischemic stroke, 146 of their parents and 159 controls. Both polymorphisms were genotyped using the restriction fragment length polymorphism method. Two study designs were used: a case-control model and a family-based transmission-disequilibrium test. Statistica 7.1 and EpiInfo 6 softwares were used in all analyses. RESULTS In the TDT test, a tendency to a higher transmission of the 312Ala allele of the FGA gene and the -455A allele of the FGB gene was observed, however, it was statistically non-significant. The frequencies of alleles and genotypes of both FGA and FGB genes polymorphisms did not differentiate children from both groups also in the case-control model. Additive or synergistic effects between FGA and FGB genes polymorphisms were not observed. CONCLUSION An analysis of the results obtained in this study and a critical review of previously published data indicate that examined gene polymorphisms are not related to ischemic stroke in children.
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Affiliation(s)
- I Kopyta
- School of Medicine in Katowice, Medical University of Silesia, Department of Paediatrics and Developmental Age Neurology, Chair of Paediatrics, Medykow Str 16, 40-752 Katowice, Poland.
| | - P Niemiec
- School of Health Sciences in Katowice, Medical University of Silesia, Department of Biochemistry and Medical Genetics, Medykow Str 18, 40-752 Katowice, Poland.
| | - A Balcerzyk
- School of Health Sciences in Katowice, Medical University of Silesia, Department of Biochemistry and Medical Genetics, Medykow Str 18, 40-752 Katowice, Poland.
| | - E Emich-Widera
- School of Medicine in Katowice, Medical University of Silesia, Department of Paediatrics and Developmental Age Neurology, Chair of Paediatrics, Medykow Str 16, 40-752 Katowice, Poland.
| | - E Pilarska
- Department of Developmental Neurology, Medical University of Gdansk, Debinki Str 7, 80-211 Gdansk, Poland.
| | - K Pienczk-Ręcławowicz
- Department of Developmental Neurology, Medical University of Gdansk, Debinki Str 7, 80-211 Gdansk, Poland.
| | - M Kaciński
- Department of Pediatric and Adolescent Neurology, Jagiellonian University Medical College, Wielicka Str 265, 30-663 Kraków, Poland.
| | - J Wendorff
- Department of Neurology, Polish Mother's Memorial Hospital-Research Institute, Rzgowska Str 281/289, 93-338 Łódź, Poland.
| | - T Nowak
- School of Health Sciences in Katowice, Medical University of Silesia, Department of Biochemistry and Medical Genetics, Medykow Str 18, 40-752 Katowice, Poland.
| | - T Iwanicki
- School of Health Sciences in Katowice, Medical University of Silesia, Department of Biochemistry and Medical Genetics, Medykow Str 18, 40-752 Katowice, Poland.
| | - B Sarecka-Hujar
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Department of Drug Form Technology, Chair of Applied Pharmacy, Kasztanowa Str. 3, 41-205 Sosnowiec, Poland.
| | - I Zak
- School of Health Sciences in Katowice, Medical University of Silesia, Department of Biochemistry and Medical Genetics, Medykow Str 18, 40-752 Katowice, Poland.
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Bazina A, Sertić J, Mišmaš A, Lovrić T, Poljaković Z, Miličić D. PPARγ and IL-6 - 174G>C gene variants in Croatian patients with ischemic stroke. Gene 2015; 560:200-4. [PMID: 25659766 DOI: 10.1016/j.gene.2015.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 01/24/2015] [Accepted: 02/03/2015] [Indexed: 10/24/2022]
Abstract
AIM Etiology of ischemic stroke (IS) is multifactorial and includes interaction of genetic and environmental factors. Different genes, their polymorphisms, host susceptibility, and inflammation processes play a role in IS development. The aim of this study was to evaluate the effect of PPAR-γ and IL-6 gene variants on IS onset. MATERIAL AND METHODS A total of 301 subjects (144 males, 157 females) participated in the study, 114 patients with IS and 187 healthy controls. RESULTS Statistically significant predictors of IS were male gender (OR 7.13, 95% CI 2.92-17.39, p<0.001), hypertension (OR 7.82. 95% CI 2.53-24.19, p<0.001), lowered HDL cholesterol (OR 8.20, 95% CI 2.41-27.94, p=0.001), elevated C-reactive protein (OR 5.26, 95% CI 1.92-14.41) and IL-6 -174 GC (OR 2.44 95% CI 1.01-5.91, p=0.0048) genotype. Males, compared to females, had 7 times higher odds for stroke. IL6 -174G/C genotype increased the odds for IS for 2.4 times. PPARγ was not statistically significantly associated with stroke. CONCLUSION We can point to the IL-6 -174G>C polymorphisms as candidate gene marker and risk factor for the prediction of ischemic stroke.
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Affiliation(s)
- A Bazina
- University Hospital Centre Zagreb, Department of Neurology, Neurological Intensive Care Unit, Zagreb, Croatia.
| | - J Sertić
- University of Zagreb School of Medicine, Zagreb, Croatia; University Hospital Centre Zagreb, Department of Laboratory Diagnosis, Clinical Unit of Molecular Diagnosis, Zagreb, Croatia.
| | - A Mišmaš
- University Hospital Centre Zagreb, Department of Neurology, Neurological Intensive Care Unit, Zagreb, Croatia.
| | - T Lovrić
- University of Zagreb School of Medicine, Zagreb, Croatia.
| | - Z Poljaković
- University Hospital Centre Zagreb, Department of Neurology, Neurological Intensive Care Unit, Zagreb, Croatia; University of Zagreb School of Medicine, Zagreb, Croatia.
| | - D Miličić
- University of Zagreb School of Medicine, Zagreb, Croatia; University Hospital Centre Zagreb, Clinic for Cardiovascular Diseases, Zagreb, Croatia.
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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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Association of β-fibrinogen promoter gene polymorphism (−148C/T), hyperfibrinogenemia and ischemic stroke in young adult patients. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2015. [DOI: 10.1016/j.ejmhg.2014.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Zhu XY, Hou RY, Pan XD, Wang YC, Zhang ZS, Guo RY. Association between the methylenetetrahydrofolate reductase (MTHFR) gene C677T polymorphism and ischemic stroke in the Chinese population: a meta-analysis. Int J Neurosci 2014; 125:885-94. [PMID: 25375269 DOI: 10.3109/00207454.2014.984295] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE The association between the methylenetetrahydrofolate reductase (MTHFR) gene C677T polymorphism and ischemic stroke (IS) has been extensively studied; however, the results from genetic association studies have been inconsistent even in the Chinese population. As far as we know, there was no previous meta-analysis concerning this association in the Chinese population. Therefore, the aim of our meta-analysis was to further evaluate the association in the Chinese population. METHODS We collected all of the relevant studies from Pubmed, OVID, Embase, Chinese Wan Fang database, CNKI, Chongqing VIP database and CBM up to August 2014. The available data was analyzed by Stata (version 12.0). We used odds ratios (ORs) and corresponding 95% confidence intervals (CIs) to present the strength of the association. Heterogeneity was evaluated by the Q-test and I(2) statistic. Different genetic models, subgroup analysis, publication bias and sensitivity analysis were used to improve the comprehensive understanding. RESULTS The results showed a significant association between the MTHFR gene C677T polymorphism and IS in six genetic models (additive model: OR = 1.34, 95%CI: 1.17 ∼ 1.54, p < 0.001; dominant model: OR = 1.44, 95% CI:1.26 ∼ 1.64, p < 0.001; recessive model: OR = 1.45, 95% CI: 1.15 ∼ 1.83, p = 0.001; heterozygote model: OR = 1.35, 95% CI: 1.18 ∼ 1.55, p < 0.001; homozygote model: OR = 1.80, 95% CI: 1.34 ∼ 2.41, p < 0.001; and allelic model: OR = 1.34, 95% CI: 1.17 ∼ 1.53, p < 0.001) based on the overall population, as well as subgroup analysis. In addition, the similar results were obtained in the sensitivity analysis based on studies with the high quality. CONCLUSIONS This meta-analysis presented a significant association between the MTHFR gene C677T polymorphism and IS, the T allele might be a risk factor for IS in the Chinese population.
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Affiliation(s)
- Xiao-Yan Zhu
- a Department of Critical Care Medicine, the Affiliated Hiser Hospital of Qingdao University , Qingdao , China
| | - Rong-Yao Hou
- b Department of Neurology, the Affiliated Hiser Hospital of Qingdao University , Qingdao , China
| | - Xu-Dong Pan
- c Department of Neurology, the Affiliated Hospital of Qingdao University , Qingdao , China
| | - Yu-Chun Wang
- a Department of Critical Care Medicine, the Affiliated Hiser Hospital of Qingdao University , Qingdao , China
| | - Zheng-Shou Zhang
- a Department of Critical Care Medicine, the Affiliated Hiser Hospital of Qingdao University , Qingdao , China
| | - Rui-You Guo
- b Department of Neurology, the Affiliated Hiser Hospital of Qingdao University , Qingdao , China
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Cheng SY, Zhao YD, Zeng JW, Chen XY, Wang RD. A polymorphism (-455G>A) in the β-fibrinogen gene is associated with an increased risk of cerebral infarction in the Chinese population: A meta-analysis. J Renin Angiotensin Aldosterone Syst 2014; 16:399-408. [PMID: 25398500 DOI: 10.1177/1470320314549222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 07/01/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Previous studies have investigated the association between a polymorphism (-455 G>A) in the β-fibrinogen gene and the risk of cerebral infarction. However, these results are controversial. To shed light on these inconclusive findings, we performed a meta-analysis of studies relating the β-fibrinogen genetic polymorphism (-455 G>A) to the risk of cerebral infarction. METHODS We identified literature published before July 2013 by searching PubMed, EMBASE, ISI Web of Science, the Chinese National Knowledge Infrastructure database (CNKI) and the Wanfang database in China and by reviewing the references of retrieved articles. We included studies that reported odds ratio (OR) with 95% confidence interval (CI) for the association between the β-fibrinogen genetic polymorphism and cerebral infarction risk. Publication bias was tested by a funnel plot, and the OR of all studies were combined dependent on the results of the heterogeneity tests among the individual studies. The software Review Manager (Version 5.2) was used for meta-analysis. RESULTS Twenty independent case-control studies containing 9477 subjects were included. Our results showed that the -455 G>A polymorphism in the β-fibrinogen gene was associated with the increased risk of cerebral infarction [(AA+GA) vs. GG, OR=1.17, 95%CI: 1.04-1.31, p=0.008; A vs. G, OR=1.12, 95%CI: 1.01-1.23, p=0.03] in the Chinese population by a meta-analysis. However, we did not find this association in the Caucasian population [(AA+GA) vs. GG, OR=0.99, 95%CI: 0.87-1.11, p=0.84; A vs. G, OR=0.97, 95%CI: 0.84-1.13, p=0.73, respectively]. CONCLUSION The results of our meta-analysis indicate that the -455 G>A polymorphism in the β-fibrinogen gene is a susceptibility marker of ischemic cerebral infarction in the Chinese population.
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Affiliation(s)
- Sai-Yu Cheng
- Department of Neurology, Second Affiliated Hospital and XinQiao Hospital,Third Military Medical University,Chongqing 400037,China
| | - Yan-Dong Zhao
- Department of Neurobiology, College of Basic Medical Sciences, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, China
| | - Jun-Wei Zeng
- Department of Physiology, Zunyi Medical College, China
| | - Xiao-Yan Chen
- Department of Neurology, Second Affiliated Hospital and XinQiao Hospital,Third Military Medical University,Chongqing 400037,China
| | - Ruo-Dan Wang
- Department of Neurology, Second Affiliated Hospital and XinQiao Hospital,Third Military Medical University,Chongqing 400037,China
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Vijayan M, Chinniah R, Ravi PM, Mosses Joseph AK, Vellaiappan NA, Krishnan JI, Karuppiah B. ACE-II genotype and I allele predicts ischemic stroke among males in south India. Meta Gene 2014; 2:661-9. [PMID: 25606450 PMCID: PMC4287818 DOI: 10.1016/j.mgene.2014.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/22/2014] [Accepted: 09/02/2014] [Indexed: 12/31/2022] Open
Abstract
Two hundred ischemic stroke patients and 193 age and sex matched healthy controls were studied for the presence of Angiotensin Converting Enzyme Insertion/Deletion (ACE I/D) gene polymorphism. The PCR studies revealed that ACE 'II' (OR = 2.055; p = 0.004) genotype and 'I' (OR = 1.411; p = 0.018) alleles were significantly associated with IS patients. Gender specific analysis revealed a strong association of 'II' (OR = 2.044; p = 0.014) genotype and 'I' (OR = 1.531; p = 0.011) allele with male sex. Classification of patients based on TOAST criteria, revealed a significant association for 'II' genotype (OR = 1.713; p = 0.043) and 'I' (OR = 1.382; p = 0.039) allele in LVD patients only. When the data was stratified based on age and sex, a statistically significant association was observed for ACE 'II' genotype (OR = 2.288; p = 0.006) and 'I' allele (OR = 1.395; p = 0.054) in IS male patients of > 50 years of age. The ACE 'D' allele was found to be increased in controls (OR = 0.709; p = 0.018) than IS patients. Multivariate logistic regression analysis showed that smoking and diabetes were the most powerful independent risk factor in LVD type of stroke. Thus, we presented here an evidence for a strong association of ACE 'II' genotype and 'I' allele compounded by factors such as smoking and diabetes among south Indian IS patients.
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Affiliation(s)
- Murali Vijayan
- Department of Biotechnology & Genetic Engineering, Bharathidasan University, Tiruchirappalli-620 024, 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
| | | | | | | | - Balakrishnan Karuppiah
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India
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32
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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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Zhao J, Qin X, Li S, Zeng Z. Association between the ACE I/D polymorphism and risk of ischemic stroke: an updated meta-analysis of 47,026 subjects from 105 case-control studies. J Neurol Sci 2014; 345:37-47. [PMID: 25082780 DOI: 10.1016/j.jns.2014.07.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/06/2014] [Accepted: 07/10/2014] [Indexed: 01/19/2023]
Abstract
BACKGROUND The association between the angiotensin-converting enzyme insertion/deletion (ACE I/D) polymorphism and risk of ischemic stroke (IS) remains controversial and ambiguous. To clarify this association, a large meta-analysis was performed. METHODS Electronic databases in both English and Chinese were used to identify relevant studies (updated in February 2014). Odds ratios (ORs) and 95% confidence intervals (95% CIs) were used to describe the strength of the association. RESULTS One hundred and fifty eligible studies, including 18,258 IS cases and 28,768 controls, were identified. Meta-analysis of these studies pointed to a significant association between the ACE I/D polymorphism and IS risk: (D vs. I: OR=1.354, 95% CI=1.272-1.440, P<0.001; DD vs. II: OR=1.755, 95% CI=1.561-1.973, P<0.001; ID vs. II: OR=1.178, 95% CI=1.098-1.263, P<0.001; DD vs. ID/II OR=1.535, 95% CI=1.399-1.684, P<0.001; DD/ID vs. II: OR=1.353, 95% CI=1.251-1.463, P<0.001). Subgroup analysis revealed a significantly elevated risk among Asians, but with borderline statistical significance among Caucasians. CONCLUSION This meta-analysis indicated that the ACE I/D polymorphism may be a genetic susceptibility factor for IS, especially among Asians, but with borderline statistical significance for Caucasians. Further investigations are needed to validate our conclusions.
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Affiliation(s)
- Jiangyang Zhao
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
| | - Xue Qin
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
| | - Shan Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
| | - Zhiyu Zeng
- Department of Geriatrics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
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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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Zhang LJ, Li HH, Tao SB, Yuan B, Yan HQ, Chang L, Zhao JH. FGB gene - 148C>T polymorphism is associated with increased risk of ischemic stroke in a Chinese population: a meta-analysis based on 18 case-control studies. Genet Test Mol Biomarkers 2014; 18:377-82. [PMID: 24720800 DOI: 10.1089/gtmb.2013.0501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Several published articles investigated the relationship between a polymorphism -148C>T in the β-fibrinogen gene (FGB) and risk of ischemic stroke, and did not reach the same conclusion. To shed light on these inconclusive findings, we performed a meta-analysis of studies relating the FGB genetic polymorphism (-148C>T) to the risk of ischemic stroke. METHODS We identified articles by searching PubMed, EMBASE, Chinese National Knowledge Infrastructure databases (CNKI), and Wanfang database in China and by reviewing the references of retrieved articles. We included studies that reported odds ratio (OR) with 95% confidence interval (CI) for the association between the FGB -148C>T polymorphism and stroke risk. Data from eligible studies were extracted for meta-analysis. Stroke risk associated with FGB -148C>T polymorphism was estimated by pooled ORs and 95% CIs. The software Review Manager (version 5.2) was utilized for meta-analysis. Publication bias was tested by funnel plot. RESULTS Eighteen independent case-control studies containing 2159 ischemic stroke patients and 3222 control subjects were included. Our results showed that -148C>T polymorphism in the FBG gene was associated with increased risk of ischemic stroke ([TT+CT] vs. CC: OR=1.40, 95% CI [1.20-1.45], p<0.0001; T vs. C: OR=1.35, 95% CI [1.18-1.56], p<0.0001, respectively] by a meta-analysis. CONCLUSION The results of our meta-analysis suggested that the-148C>T polymorphism in the FGB gene is a susceptibility marker of ischemic stroke.
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Affiliation(s)
- Li-Jun Zhang
- Department of Neurology, First Affiliated Hospital of Xinxiang Medical College , Xinxiang, People's Republic of China
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Atadzhanov M, Mwaba MH, Mukomena PN, Lakhi S, Mwaba P, Rayaprolu S, Meschia JF, Ross OA. Frequency of APOE, MTHFR and ACE polymorphisms in the Zambian population. BMC Res Notes 2014; 7:194. [PMID: 24679048 PMCID: PMC4230427 DOI: 10.1186/1756-0500-7-194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 03/21/2014] [Indexed: 01/05/2023] Open
Abstract
Background Polymorphisms within the apolipoprotein-E (APOE), Methylenetetrahydrofolate reductase (MTHFR) and Angiotensin I-converting enzyme (ACE) genes has been associated with cardiovascular and cerebrovascular disorders, Alzheimer’s disease and other complex diseases in various populations. The aim of the study was to analyze the allelic and genotypic frequencies of APOE, MTHFR C677T and ACE I/D gene polymorphisms in the Zambian population. Results The allele frequencies of APOE polymorphism in the Zambian populations were 13.8%, 59.5% and 26.7% for the ε2, ε3 and ε4 alleles respectively. MTHFR C677T and ACE I/D allele frequencies were 8.6% and 13.8% for the T and D minor alleles respectively. The ε2ε2 genotype and TT genotype were absent in the Zambian population. The genetic distances between Zambian and other African and non-African major populations revealed an independent variability of these polymorphisms. Conclusion We found that the APOE ε3 allele and the I allele of the ACE were significantly high in our study population while there were low frequencies observed for the MTHFR 677 T and ACE D alleles. Our analysis of the APOE, MTHFR and ACE polymorphisms may provide valuable insight into the understanding of the disease risk in the Zambian population.
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Affiliation(s)
- Masharip Atadzhanov
- Department of Internal Medicine, University of Zambia, P,O,Box 51237, Lusaka, Zambia.
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Zhang MJ, Li JC, Yin YW, Li BH, Liu Y, Liao SQ, Gao CY, Zhang LL. Association of MTHFR C677T polymorphism and risk of cerebrovascular disease in Chinese population: an updated meta-analysis. J Neurol 2014; 261:925-35. [DOI: 10.1007/s00415-014-7300-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 02/21/2014] [Accepted: 02/22/2014] [Indexed: 01/22/2023]
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Atadzhanov M, Mwaba MH, Mukomena PN, Lakhi S, Rayaprolu S, Ross OA, Meschia JF. Association of the APOE, MTHFR and ACE Genes Polymorphisms and Stroke in Zambian Patients. Neurol Int 2013; 5:e20. [PMID: 24416484 PMCID: PMC3883065 DOI: 10.4081/ni.2013.e20] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 07/16/2013] [Accepted: 07/22/2013] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to investigate the association of APOE, MTHFR and ACE polymorphisms with stroke in the Zambian population. We analyzed 41 stroke patients and 116 control subjects all of Zambian origin for associations between the genotype of the APOE, MTHFR and ACE polymorphisms and stroke. The APOE ε2ε4 genotype showed increased risk for hemorrhagic stroke (P<0.05) and also a high risk for ischemic stroke (P=0.05). There was complete absence of the APOE ε2ε2 and the MTHFR TT genotypes in the Zambian population. The difference between cases and controls was not significant for the other genetic variants when analyzed for relationship between stroke, stroke subtype and genotype. We show that genetic variation at the APOE locus affects susceptibility to stroke. No detectable association were observed for the MTHFR and ACE genotypes and stroke in the Zambian population.
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Affiliation(s)
- Masharip Atadzhanov
- Department of Internal Medicine, School of Medicine, University of Zambia, Lusaka, Zambia; Departments of
| | - Mwila H Mwaba
- Department of Internal Medicine, School of Medicine, University of Zambia, Lusaka, Zambia; Departments of
| | - Patrice N Mukomena
- Department of Internal Medicine, School of Medicine, University of Zambia, Lusaka, Zambia; Departments of
| | - Shabir Lakhi
- Department of Internal Medicine, School of Medicine, University of Zambia, Lusaka, Zambia; Departments of
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Hou R, Zhu X, Pan X, Guo R, Ma T, Xu X. ATP-binding cassette transporter A1 R219K polymorphism and ischemic stroke risk in the Chinese population: a meta-analysis. J Neurol Sci 2013; 336:57-61. [PMID: 24157307 DOI: 10.1016/j.jns.2013.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/13/2013] [Accepted: 10/03/2013] [Indexed: 11/28/2022]
Abstract
Recently, many studies have been focused on the association between the ATP-binding cassette transporter A1 (ABCA1) gene R219K polymorphism and ischemic stroke (IS). However, the study results have been inconsistent, especially in the Chinese population. Therefore, we performed a meta-analysis to better clarify the association between the ABCA1 gene and IS. All of the relevant studies used in our meta-analysis were identified using PubMed, OVID, Cochrane Library, Chinese Wan Fang database, Chinese VIP database, China National Knowledge Infrastructure (CNKI), and China Biological Medicine Database (CBM) up to May 2013. Statistical analysis was conducted with STATA software version 11.0. Odds ratios with 95% confidence intervals were applied to evaluate the strength of the association between ABCA1 gene R219K polymorphism and IS. Heterogeneity was evaluated using the Q-test and I(2) statistic. The funnel plots, Begg's and Egger's regression tests were used to assess the publication bias. Our meta-analysis showed the dominant genetic model (OR=0.92, 95% CI: 0.88-0.96), the recessive genetic model (OR=0.73, 95% CI: 0.51-1.05), the homozygote genetic model (OR=0.64, 95% CI: 0.44-0.94), the heterozygote genetic model (OR=0.81, 95% CI: 0.69-0.95), and the allelic genetic model (OR=0.83, 95% CI: 0.69-0.99). For R219K in IS, there were significant associations with these genetic models, but not with the recessive genetic model. Our meta-analysis indicated that the ABCA1 gene R219K polymorphism might be associated with IS and the K allele might be a protective factor in the Chinese population.
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Affiliation(s)
- Rongyao Hou
- Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China
| | - Xiaoyan Zhu
- Department of Critical Care Medicine, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China
| | - Xudong Pan
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China.
| | - Ruiyou Guo
- Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China
| | - Teng Ma
- Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China
| | - Xiang Xu
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Yao YS, Chang WW, Jin YL, He LP. An updated meta-analysis of endothelial nitric oxide synthase gene: three well-characterized polymorphisms with ischemic stroke. Gene 2013; 528:84-92. [PMID: 23845784 DOI: 10.1016/j.gene.2013.06.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 05/28/2013] [Accepted: 06/17/2013] [Indexed: 10/26/2022]
Abstract
Polymorphisms in the endothelial nitric oxide synthase (eNOS) gene may influence the risk of ischemic stroke (IS), but the results are still debatable. A meta-analysis was performed to investigate the association between the eNOS gene polymorphisms in IS risk. Case-control studies on the association between the G894T, T-786C, and 4b/a polymorphisms and IS were searched up to July 2012, and the genotype frequencies in the control group were found to be consistent with the Hardy-Weinberg equilibrium (HWE). The effect summary odds ratio (OR) and 95% confidence intervals (CIs) were obtained. Meta-regression was used to explore the potential sources of heterogeneity. Funnel plots and Egger's test was used to estimate small study biases, and heterogeneity was assessed by chi-square-based Q-test and I(2) test. There were total 6537/6475 cases/controls for G894T, 3459/3951 cases/controls for 4b/a, and 2125/2673 cases/controls for T-786C polymorphism. For G894T and 4b/a, a significant association of 894T allele and 4a allele with increased risk of IS was found in Asians (TT+GT vs. GG: p<0.00001, OR=1.60, 95% CI=1.38-1.79, Pheterogeneity=0.11; aa+ba vs. bb: P<0.00001, OR=1.60, 95% CI=1.30-1.97, Pheterogeneity=0.02), but not in Caucasians (TT+GT vs. GG: P=0.60, OR=0.94, 95% CI=0.75-1.19, Pheterogeneity=0.002; aa+ba vs. bb: P=0.13, OR=0.81, 95% CI=0.62-1.06, Pheterogeneity=0.63). For T-786C polymorphism, there were no significant differences in genotype distribution between IS and control in Asians (CC+TC vs. TT: P=0.15, OR=1.14, 95% CI=0.95-1.37, Pheterogeneity=0.94) and in Caucasians (CC+TC vs. TT: P=0.72, OR=0.96, 95% CI=0.75-1.22, Pheterogeneity=0.53). This analysis provides strong evidence that the eNOS T-786C gene polymorphism is not associated with IS, the G894T and 4b/a polymorphisms might be associated with IS, at least in Asians.
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Affiliation(s)
- Ying-Shui Yao
- Department of Preventive Medicine, Wannan Medical College, 241002 Wuhu, Anhui, China.
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41
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Gu L, Su L, Liang B, Tang N, Long J, Tan J, Chen Q, Xie J, Wu G, Yan Y, Huang G, Zu X. Association between the C242T polymorphism of p22phox gene and ischemic stroke: A meta-analysis. J Neurol Sci 2013; 330:100-10. [DOI: 10.1016/j.jns.2013.04.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 04/19/2013] [Accepted: 04/22/2013] [Indexed: 10/26/2022]
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Wang S, Zeng R, Lei L, Huang J. Angiotensinogen gene polymorphism and ischemic stroke in East Asians: A meta-analysis. Neural Regen Res 2013; 8:1228-35. [PMID: 25206417 PMCID: PMC4107611 DOI: 10.3969/j.issn.1673-5374.2013.13.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Accepted: 03/20/2013] [Indexed: 11/21/2022] Open
Abstract
Objective: To investigate the association between angiotensinogen gene M235T polymorphism and ischemic stroke in East Asians. Data Retrieval: A computer-based online search was conducted in PubMed, Google scholar, China National Knowledge lnfrastructure database between January 1990 and April 2012 for relevant studies. The key words were angiotensinogen or AGT, polymorphism or genetic and ischemic stroke or cerebral infarction. Selection Criteria: Case-controlled studies addressing the correlation between angiotensinogen gene M235T polymorphism and ischemic stroke in East Asians were included. The distribution of genotypes in the included studies was tested for Hardy-Weinberg equilibrium. Quality evaluation of the included studies was conducted by two physicians. Statistical analyses were carried out using Stata 12.0 software for meta-analysis. Heterogeneity tests, sensitivity analysis and publication bias were also conducted. Main Outcome Measures: The association between angiotensinogen gene M235T polymorphism and ischemic stroke risk in East Asians was assessed. Results: Six relevant studies involving 891 patients with ischemic stroke and 727 controls were included in this meta-analysis. Results showed that there was a significant association between angiotensinogen gene M235T polymorphism and the risk of ischemic stroke in East Asians (T vs. M: odds ratio (OR) = 1.54, 95% confidence interval (CI) = 1.10–2.16; TT vs. MM: OR = 2.24, 95%CI = 1.37–3.66; TT vs. MT: OR = 1.76, 95%CI = 1.41–2.20; MM + MT vs. TT: OR = 0.57, 95%CI = 0.46–0.70). Sensitivity analysis confirmed that the study results were stable and reliable, with no publication bias. Conclusion: The angiotensinogen gene M235T polymorphism is associated with ischemic stroke in East Asians, and the TT genotype and T allele are risk factors for ischemic stroke.
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Affiliation(s)
- Sheng Wang
- Department of Anesthesiology, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou 510080, Guangdong Province, China
| | - Rong Zeng
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou 510080, Guangdong Province, China
| | - Limin Lei
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou 510080, Guangdong Province, China
| | - Jinsong Huang
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou 510080, Guangdong Province, China
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Zhao J, Zheng L, Fei Q, Fu Y, Weng Y, Wu H, Li H, Jun Q, Shao J, Xu Y. Association of thromboxane A2 receptor gene polymorphisms with cerebral infarction in a Chinese population. Neurol Sci 2013; 34:1791-6. [PMID: 23456445 DOI: 10.1007/s10072-013-1340-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 02/18/2013] [Indexed: 10/27/2022]
Abstract
Platelet aggregation is crucial for the development of cerebral infarction (CI) and it is markedly increased due to the binding of thromboxane A2 (TXA2) to its receptor (TXA2R). Therefore, TXA2R plays a central role in the pathogenesis of atherosclerosis and thrombosis. This study aimed to investigate the relationship between human TXA2R gene single nucleotide polymorphisms (SNPs) and non-cardiogenic CI in a Chinese cohort. Two SNPs, rs768963 and rs4523, located in the regulatory and coding regions of TXA2R gene, respectively, were examined in DNA samples from 407 Chinese patients with CI and 270 controls. 407 CI was categorized into subtypes using Trial of Org 10172 in Acute Stroke Treatment (TOAST) classification. There was no significant association between rs4523 variants and CI. However, there was a significant difference in the overall distribution of genotypes and dominant/recessive models of rs768963 between CI and control groups. In addition, multiple logistic regression analysis revealed that the C allele of rs768963 was significantly associated with total CI (P = 0.023), large artery atherosclerosis subtype (P = 0.009), small artery occlusion subtype (P = 0.044) after adjusting for confounding factors (odds ratio = 1.533, 1.918 and 1.573, respectively). We conclude that TXA2R rs768963 polymorphism is associated with CI in a Chinese population.
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Affiliation(s)
- Jing Zhao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Road, 450052, Zhengzhou, Henan, China
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Gu L, Su L, Chen Q, Liang B, Qin Y, Xie J, Wu G, Yan Y, Long J, Wu H, Tan J, Dou W, Chen W, Wu P, Wang J. Association between the apolipoprotein E gene polymorphism and ischemic stroke in Chinese populations: New data and meta-analysis. Exp Ther Med 2012; 5:853-859. [PMID: 23407699 PMCID: PMC3570227 DOI: 10.3892/etm.2012.866] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Accepted: 11/30/2012] [Indexed: 11/07/2022] Open
Abstract
Ischemic stroke (IS) is a complex multifactorial inherited disease. Many studies have focused on the potential genetic effects of apolipoprotein E (ApoE) gene polymorphism on IS. However, inconsistencies still exist in the association of ApoE gene polymorphism with IS. The aim of this study was to investigate the ApoE gene polymorphism in relation to IS in the Guangxi Han populations and assess the risk of various ApoE genotypes associated with IS in Chinese populations. We conducted a case-control study involving a total of 166 IS cases and 192 healthy controls to investigate the association of ApoE gene polymorphism with IS in the Guangxi Han populations. Furthermore, we performed a meta-analysis to investigate whether the ApoE gene polymorphism is associated with IS in Chinese populations. There was no evidence for a significant association between ApoE gene polymorphism and IS in the Guangxi Han populations (ɛ2/ɛ2 vs. ɛ3/ɛ3: OR=1.25, 95% CI=0.08–20.17; ɛ2/ɛ3 vs. ɛ3/ɛ3: OR=1.49, 95% CI=0.79–2.79; ɛ2/ɛ4 vs. ɛ3/ɛ3: OR=1.25, 95% CI=0.17–9.00; ɛ3/ɛ4 vs. ɛ3/ɛ3: OR=1.10, 95% CI=0.60–2.04; ɛ4/ɛ4 vs. ɛ3/ɛ3: OR=2.50, 95% CI=0.22–27.87; allele ɛ2 vs. allele ɛ3: OR=1.39, 95% CI=0.80–2.44; allele ɛ4 vs. allele ɛ3: OR=1.16, 95% CI=0.68–1.98). In our meta-analysis, a significant association of ApoE gene polymorphism with IS was found in the genetic model of ɛ2/ɛ4 vs. ɛ3/ɛ3 (OR=2.04, 95% CI=1.45–2.85), ɛ3/ɛ4 vs. ɛ3/ɛ3 (OR=1.93, 95% CI=1.42–2.62), ɛ4/ɛ4 vs. ɛ3/ɛ3 (OR=3.41, 95% CI=2.17–5.34) and allele ɛ4 vs. allele ɛ3 (OR=2.34, 95% CI=1.91–2.86). However, no clear associations were found in the model of ɛ2/ɛ2 vs. ɛ3/ɛ3 (OR=1.56, 95% CI=0.90–2.71), ɛ2/ɛ3 vs. ɛ3/ɛ3 (OR=0.93, 95% CI=0.79–1.09) and allele ɛ2 vs. allele ɛ3 (OR=1.10, 95% CI=0.97–1.25). In conclusion, no association was found between ApoE gene polymorphism and IS in the Guangxi Han populations, while the results of the meta-analysis indicate that the ApoE mutation allele ɛ4 increases the risk of IS in Chinese populations.
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Affiliation(s)
- Lian Gu
- Department of Internal Neurology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023
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Zhang Z, Xu G, Liu D, Fan X, Zhu W, Liu X. Angiotensin-converting enzyme insertion/deletion polymorphism contributes to ischemic stroke risk: a meta-analysis of 50 case-control studies. PLoS One 2012; 7:e46495. [PMID: 23049705 PMCID: PMC3462189 DOI: 10.1371/journal.pone.0046495] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 09/05/2012] [Indexed: 01/06/2023] Open
Abstract
Background Many studies have investigated the association between the angiotensin-converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism and risk of ischemic stroke. However, the evidence is inadequate to draw robust conclusions because most studies were generally small and conducted in heterogeneous populations. To shed light on these inconclusive findings, we conducted a large meta-analysis of studies relating the ACE I/D polymorphism to the risk of ischemic stroke. Methods Relevant studies were identified by searching PubMed and Embase through February 2012 and by reviewing the references of retrieved articles. We included studies that reported odds ratio (OR) with 95% confidence interval (CI) for the association between this polymorphism and ischemic stroke risk. Results Fifty independent publications, with 10 070 stroke cases and 22 103 controls, were included. The results indicated that the DD homozygote carriers had a 37% higher risk of ischemic stroke when compared with the homozygotes II and heterozygote ID [odds ratio (OR) = 1.37, 95% confidence interval (CI): 1.22–1.53]. Subgroup analyses indicated that this higher risk was more pronounced among Asians, hospital-based studies, and small vessel disease (SVD). Potential publication bias may exist, but correction for this bias using a formal statistical method did not materially alter the combined risk estimate. Conclusion The results of our meta-analysis indicate that the D allele of ACE I/D polymorphism is a low-penetrance susceptibility marker of ischemic stroke.
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Affiliation(s)
- Zhizhong Zhang
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
| | - Gelin Xu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
| | - Dezhi Liu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
| | - Xinying Fan
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
| | - Wusheng Zhu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Jiangsu Province, China
- * E-mail:
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Lian G, Yan Y, Jianxiong L, Juanjuan X, Qing C, Guangliang W, Li S. The rs11833579 and rs12425791 polymorphisms and risk of ischemic stroke in an Asian population: a meta-analysis. Thromb Res 2012; 130:e95-e102. [PMID: 22795341 DOI: 10.1016/j.thromres.2012.06.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 06/14/2012] [Accepted: 06/18/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND In 2009, a GWAS has confirmed that rs11833579 and rs12425791 near the NINJ2 gene could increase the stroke and ischemic stroke (IS) risk. Recently, several studies have been implemented to assess the relationship between the two SNPs and ischemic stroke risk in Asian. However, the results were poorly consistent. To study the association between the both polymorphisms and the risk of ischemic stroke, we performed a meta-analysis. METHODS We used odds ratios (ORs) with 95% confidence intervals (CIs) to evaluate the strength of association. The heterogeneity was checked by Q test and the inconsistency index (I(2)). Begg's test and Egger's test were used to assess the possible publication bias. RESULTS Our study included 6 articles, contained 9 independent case-control studies, involved a total of 9,142 cases and 10,652 controls about rs11833579, 10,165 cases and 11,592 controls about rs12425791. There was a significant association between rs12425791 and IS risk with dominant genetic model (OR=1.087, 95%CI=1.021-1.158, I(2)=34.6%, P=0.152), but not with recessive genetic model and allele A vs. allele G. For rs11833579, we failed to verify it relate with IS risk under allele A vs. allele G, dominant and recessive genetic model. CONCLUSIONS This meta-analysis suggest that rs12425791 is relative to ischemic stroke risk under dominant model in Asian population, but not for rs11833579.
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Affiliation(s)
- Gu Lian
- Department of Internal Neurology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
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Shyu HY, Shieh JC, Ji-Ho L, Wang HW, Cheng CW. Polymorphisms of DNA repair pathway genes and cigarette smoking in relation to susceptibility to large artery atherosclerotic stroke among ethnic Chinese in Taiwan. J Atheroscler Thromb 2012; 19:316-25. [PMID: 22277767 DOI: 10.5551/jat.10967] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM Cigarette-smoking induced oxidative DNA damage to endothelial cells has been reported to play an etiological role in atherosclerosis development. Individual vulnerability to oxidative stress through smoking exposure and the ability to repair DNA damage, which plays a critical role in modifying the risk susceptibility of large artery atherosclerotic (LAA) stroke, is hypothesized. Thus, we examined the effect of genetic polymorphisms of DNA repair pathway genes and cigarette smoking in relation to risk susceptibility of LAA stroke. METHODS We enrolled 116 LAA stroke patients and 315 healthy controls from the Armed Forces Taoyuan General Hospital, Taoyuan, Taiwan. Genotyping of polymorphisms of the OGG1 (Ser326Cys), XRCC1 (Arg399Gln), ERCC2 (Lys751Gln), and ERCC5 (Asp1104His) genes was performed and used to evaluate LAA stroke susceptibility. RESULTS Of those non-synonymous polymorphisms, the ERCC2 Lys751Gln variant was found to be associated with LAA stroke risk (OR: 1.69, 95%CI: 1.02-2.86), and this association was more pronounced in smokers, manifesting a 2.73-fold increased risk of LAA stroke (p=0.027). A joint effect on risk elevation of LAA stroke was seen in those patients with OGG1 and ERCC2 polymorphisms (OR: 2.75, 95%CI: 1.26-6.00). Moreover, among smokers carrying the OGG1 Ser326Cys polymorphism, there was a tendency toward an increased risk of LAA stroke in those patients who had a greater number of high-risk genotypes of XRCC1, ERCC2, and ERCC5 polymorphisms (p(trend)=0.010). CONCLUSION The susceptible polymorphisms of DNA repair pathway genes may have a modifying effect on the elevated risk of LAA stroke in smokers among ethnic Chinese in Taiwan.
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Affiliation(s)
- Hann-Yeh Shyu
- Section of Neurology, Department of Internal Medicine, Armed Forces Taoyuan General Hospital, Taoyuan, Taiwan
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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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They-They TP, Nadifi S, Rafai MA, Battas O, Slassi I. Methylenehydrofolate reductase (C677T) polymorphism and large artery ischemic stroke subtypes. Acta Neurol Scand 2011; 123:105-10. [PMID: 20637011 DOI: 10.1111/j.1600-0404.2010.01348.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The role for the methylenetetrahydrofolate reductase C677T gene variants in the risk of ischemic stroke is controversial. METHOD This first case-control study including 91 cases affected by ischemic stroke and 182 controls matched for age, sex, and same area was conducted in Casablanca, Morocco. Allele and genotype frequency were characterized by using PCR followed by HinfI enzymatic digestion. RESULTS We found no statistic association of T allele carriers genetic factors with stroke; odds ratio, 1.1; 95% confidence interval (CI), 0.59-2.04, P = 0.303. The results shown significant association of T allele carriers genetic factors with atherothrombotic subtype stroke (n = 42); odds ratio, 2.1; 95% CI: 1.17-3.8; P = 0.012, and adjusted odds ratio of 6.5; 95% CI: 1.86-23.1, P = 0.003, for TT genotype variant compared with CC wild genotype. CONCLUSION We suggested that MTHFR C677T variant may be a determinant of atherothrombotic event of ischemic stroke in Morocco.
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Affiliation(s)
- T P They-They
- Hassan II University, Ibn Rochd Hospital, District Hospitals, Casablanca, Morocco.
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[Study of the intronic polymorphism of the angiotensin 1 converting enzyme among coronary Tunisians]. Ann Cardiol Angeiol (Paris) 2011; 60:135-40. [PMID: 21277558 DOI: 10.1016/j.ancard.2010.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Accepted: 12/24/2010] [Indexed: 11/21/2022]
Abstract
BACKGROUND The acute coronary syndromes (ACS) are classified among the major causes of mortality in the industrialized countries. The increased angiotensin I converting enzyme (ACEI) activity related to a genetic polymorphism constitutes a hereditary predisposition to these syndromes. AIM Evaluate the ACEI activity in Tunisian patients with coronary heart disease, and investigate the association between this activity and an intronic deletion of 287 pb on the intron 16 of the ACEI gene. PATIENTS AND METHODS Seventy-two coronary patients and 34 control subjects are recruited for our study. ACEI activity was measured by kinetic method. The intronic deletion was identified by PCR technique. RESULTS An increased activity of ACEI was observed in patients compared with control subjects (84.38 ± 33.83 UI/L vs 59.06 ± 18.2 UI/L, P=10(-5)). The molecular study showed a raised relative frequency of D/D genotype (51.4%) among patients, whereas among the witnesses, I/I genotype prevailed (62%). D/D genotype is always associated with highest ACEI activity for the patients and the control subjects. CONCLUSION The molecular studies and the biochemical investigations of the various parameters of cardiovascular risk (including the ACEI) direct towards a better treatment.
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