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Veerabathiran R, Srinivasan K, Jayaprasad P, Iyshwarya B, Akram Husain R. Association of MTHFR gene polymorphism in preeclampsia and recurrent pregnancy loss: A case-control study from South India. HUMAN GENE 2023; 37:201199. [DOI: 10.1016/j.humgen.2023.201199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
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Rai V, Kumar P. Relation Between Methylenetetrahydrofolate Reductase Polymorphisms (C677T and A1298C) and Migraine Susceptibility. Indian J Clin Biochem 2022; 37:3-17. [PMID: 35125689 PMCID: PMC8799834 DOI: 10.1007/s12291-021-01000-0] [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: 01/24/2021] [Accepted: 08/17/2021] [Indexed: 01/03/2023]
Abstract
Migraine is a neurological disorder which impairs the patient's quality of life. Several association studies investigating the association between MTHFR gene C677T and A1298C polymorphisms and susceptibility to migraine were published. But the results were conflicting, so authors performed a meta-analysis of published case control studies to find out the exact association between MTHFR polymorphism and migraine susceptibility. Four databases were searched for suitable studies up to December, 2018. Odds ratios (OR) with 95% confidence intervals (CI) was calculated adopting additive, homozygote, co-dominant, dominant, and recessive genetic models. Results of MTHFR C677T polymorphism studies meta-analysis showed significant association with migraine risk using allele contrast, homozygote, dominant and recessive genetic models (T vs. C: OR = 1.18, 95% CI = 1.00-1.26, p = 0.05; TT vs. CC: OR = 1.24, 95% CI = 1.0-1.5, p = 0.04; CT vs. CC: OR = 1.08, 95% CI = 0.97-1.07, p = 0.25; TT + CT vs. CC: OR = 1.15, 95% CI = 1.0-1.29, p = 0.04; TT vs. CT + CC: OR = 1.97, 95% CI = 1.28-3.42, p = 0.002). However, results of MTHFR A1298 polymorphism studies meta-analysis did not show any association with migraine. Subgroup analysis based on ethnicity and migraine types i.e. migraine with aura (MA) and without aura (MO) were also performed. Results of present meta-analysis indicate overall association between MTHFR C677T polymorphism with migraine in total 24 studies, in Asian population and in MA cases but did not show any association with Caucasian population and MO cases.
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Affiliation(s)
- Vandana Rai
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP 222 003 India
| | - Pradeep Kumar
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP 222 003 India
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Mehta P, Vishvkarma R, Singh K, Rajender S. MTHFR 1298A>C Substitution is a Strong Candidate for Analysis in Recurrent Pregnancy Loss: Evidence from 14,289 Subjects. Reprod Sci 2021; 29:1039-1053. [PMID: 33742421 DOI: 10.1007/s43032-021-00530-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 03/01/2021] [Indexed: 12/20/2022]
Abstract
We undertook meta-analyses on MTHFR 1298A>C substitution for critically evaluating its association with recurrent pregnancy loss (RPL). MTHFR genotype data for 5888 cases and 8401 controls from 39 studies were pooled to perform this meta-analyses. Genotype data were screened, scrutinized, pooled, analysed and subjected to sensitivity analysis to carefully evaluate the association between MTHFR 1298A>C and recurrent pregnancy loss. Genetic associations were sought using dominant, recessive and co-dominant models of genetic testing with odds ratio and 95% Confidence interval (CI) as the effect measures. Further analyses were undertaken by classifying the studies into Caucasian and East Asian sub-groups. Genetic heterogeneity was tested before pooling the data across studies. For assessing publication bias, Egger's intercept test was undertaken. We found a significant association of 1298A>C substitution with increased risk of RPL in the dominant (P=0.000; OR = 1.58; 95% CI =1.25-1.99) as well as recessive (P=0.000; OR = 1.66; 95% CI =1.25-2.20) models. In sub-group analysis, we observed a significant association of the polymorphism with RPL in the Caucasian populations using dominant (P=0.000; OR = 1.98; 95% CI =1.42-2.76) and recessive (P=0.000; OR = 2.20; 95% CI =1.49-3.24) models. However, this substitution showed no association with RPL in the East Asian populations (P=0.149; OR = 1.187; 95% CI =0.94-1.50). MTHFR 1298A>C substitution shows association with the risk of recurrent pregnancy loss. The association is in a population-specific manner with the substitution being a strong risk factor only in the Caucasian populations.
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Affiliation(s)
- Poonam Mehta
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | - Rahul Vishvkarma
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | | | - Singh Rajender
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India.
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Diao J, Luo L, Li J, Zhang S, Li Y, Qin J. Maternal homocysteine and folate levels and risk of recurrent spontaneous abortion: A meta-analysis of observational studies. J Obstet Gynaecol Res 2020; 46:2461-2473. [PMID: 32945087 DOI: 10.1111/jog.14500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/13/2020] [Accepted: 09/02/2020] [Indexed: 11/29/2022]
Abstract
AIM The aim of the study was to review and summarize the epidemiologic evidence on the associations of homocysteine (HCY) and folate with the risk of recurrent spontaneous abortion (RSA). METHODS This review was performed following Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. PubMed, Google Scholar, Cochrane Libraries and Chinese databases were searched through May 2019 to identify studies that met prestated inclusion criteria. Either a fixed- or a random-effects model was used to calculate the combined standardized mean difference (SMD) and 95% confidence intervals (CI). RESULTS Twenty-three studies involving 2052 RSA cases and 1476 healthy controls were included. Overall, women with RSA compared with those without RSA were at a significantly higher level of HCY both in plasma (SMD = 1.34; 95% CI: 0.76-1.93) and in serum (SMD = 1.46; 95% CI: 1.02-1.91), but lower level of folate both in serum (SMD = -1.63; 95% CI: -2.51 to -0.75) and in red blood cells (SMD = -1.30; 95% CI: -1.76 to -0.85). However, a statistically significant association between plasma folate and risk of RSA was not been observed (SMD = -0.82; 95% CI: -1.73 to 0.09). These findings have to be viewed with caution for the significant heterogeneity (I2 : from 88 to 98%). CONCLUSION High HCY levels in both plasma and serum as well as low folate levels in serum and red blood cells are significantly associated with risk of RSA, which indicates that measures to reduce HCY levels or folate supplementation may help to reduce the risk of RSA. However, prospective studies are needed to confirm our findings.
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Affiliation(s)
- Jingyi Diao
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
| | - Liu Luo
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
| | - Jinqi Li
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
| | - Senmao Zhang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
| | - Yihuan Li
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
| | - Jiabi Qin
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Hunan, China
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Thrombophilia associated gene polymorphisms: Does use of medication, including anti-coagulants, minerals or folic acid, prevent the miscarriages? J Reprod Immunol 2020; 141:103172. [PMID: 32634649 DOI: 10.1016/j.jri.2020.103172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/15/2020] [Accepted: 06/20/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Recurrent pregnancy loss (RPL) has been associated with thrombophilia. The use of prophylactic treatments against thrombophilia becomes necessary in order to increase the live birth rates in women with RPL. The aim of this study was to genotype thrombophilia associated polymorphisms and investigates the benefit of prophylactic treatment on the clinical pregnancy outcomes of women with specific genotypes of these polymorphisms. MATERIALS AND METHODS A total of 62 women were included in this study. The polymorphisms associated with thrombophilia, including methyltetrahydrofolate reductase (MTHFR) 1298 and 677, Factor V Leiden (FVL) 1691, plasminogen activator inhibitor-1 (PA1-1) G/G and Factor II prothrombin 20,210, were genotyped using the real time PCR. The effect of prophylactic treatment using anti-coagulants of 0.4 mL dose of enoxaparin (3000-6000IU) and 75 mg dose of aspirin, 81 mg dose of aspirin, mineral of 15 mg dose of zinco c or10 mg dose of folic acid, was correlated with the genotypes of polymorphisms. RESULTS AND CONCLUSION The clinical pregnancy outcomes were significantly improved in patients with MTHFR 677CC genotype when treated with zinco c. Furthermore, treatment with 75 mg of aspirin resulted in higher negative pregnancy rates in patients with MTHFR A1298C genotypes. Therefore, the results of this study should be used to re-evaluate the clinical applications in women with miscarriages.
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Clément A, Chouteau J, Clément P, Ménézo Y. [Importance of the determination of MTHFR SNPs (Methylene Tetrahydrofolate Reductase Single Nucleotide Polymorphisms) in couple infertility]. ACTA ACUST UNITED AC 2020; 48:422-427. [PMID: 32145452 DOI: 10.1016/j.gofs.2020.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE MTHFR SNPs (Methylene Tetrahydrofolate reductase Single Nucleotide polymorphisms) are biochemical modifications decreasing the capacity to form 5 MTHF 5 methyltetrahydrofolate (5MTHF). Their presence reduces the capacity of the One Carbon cycle, and so the regeneration of Homocysteine (Hcy) and in fine strongly perturbs all the methylation processes. As methylation processes are major regulators in gametogenesis and embryogenesis. We have determined the prevalence of the 2 most important SNPs A1298C and C677T in our population of patients consulting for infertility. METHODS Determination of the MTHFR SNPs A1298C and C677T, by hybridization using the LAMP Human MTHFR mutation KITs. RESULTS Only 15.8% of our patients (861) do not carry any SNP (WT wid type). Close to 20% of the patients are homozygotes for one mutation or the other. A total of 19.7% are composite heterozygous. A total of 43% of our population is considered "at risk", based on observations collected for the repeat miscarriages. CONCLUSIONS Determination of the 2 major MTHFR SNPs is not a "first row" choice, but it must not be neglected and should be carried out in case of repeat ART failures and repeat miscarriages. Some simple therapeutic options can be proposed: they are based on the use of 5MTHF (5MethyleneTetraHydroFolate) the compound downstream the MTHFR.
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Affiliation(s)
- A Clément
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France.
| | - J Chouteau
- Laboratoire Oriade-Noviale, avenue de la Plaine-Fleurie, 38240 Meylan, France.
| | - P Clément
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France.
| | - Y Ménézo
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France; Laboratoire Oriade-Noviale, avenue de la Plaine-Fleurie, 38240 Meylan, France; London Fertility associates, Harley St, London, Royaume-Uni.
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Evaluation of COMT Gene rs4680 Polymorphism as a Risk Factor for Endometrial Cancer. Indian J Clin Biochem 2020; 35:63-71. [PMID: 32071497 DOI: 10.1007/s12291-018-0799-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 11/26/2018] [Indexed: 12/11/2022]
Abstract
Catechol-O-methyletransferase (COMT) enzyme is involved in the inactivation of catecholamine and catechol estrogens. Catechol estrogens have carcinogenic potential and DNA damaging ability. Several studies investigated COMT Val158Met polymorphism as risk factor for endometrial cancer but the results were inconclusive. Hence the objective of present study was to find out exact association between COMT gene Val158Met polymorphism and endometrial cancer by a meta-analysis. Pubmed, Google Scholar, Springer Link and Science Direct databases were searched for case-control articles which investigated COMT Val158Met polymorphism in endometrial cancer cases. All statistical analysis was performed using MetaAnalyst and Mix programs. The results of meta-analysis suggested that there were no association between COMT Val158Met polymorphism and endometrial cancer risk (allele contrast model-ORA vs. G = 0.97, 95% CI = 0.86-1.10, p = 0.67; co-dominant model-ORAG vs. GG = 0.91, 95% CI = 0.77-1.06, p = 0.23; homozygote model-ORAA vs. GG = 1.01, 95% CI = 0.84-1.19, p = 0.29; dominant model-ORAA+AG vs. GG = 0.93, 95% CI = 0.77-1.11, p = 0.43; recessive model-ORAA vs. AG+GG = 1.02, 95% CI = 0.89-1.20, p = 0.62). Publication bias was absent. Subgroup analysis based on source of controls was also performed. In conclusion, results of present meta-analysis showed no association between COMT Val158Met polymorphism and susceptibility to endometrial cancer.
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Kumar P, Rai V. Catechol-O-methyltransferase gene Val158Met polymorphism and obsessive compulsive disorder susceptibility: a meta-analysis. Metab Brain Dis 2020; 35:241-251. [PMID: 31879835 DOI: 10.1007/s11011-019-00495-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/12/2019] [Indexed: 12/14/2022]
Abstract
Obsessive-compulsive disorder (OCD) is a common psychiatric disorder that affects approximately 1-3% of the general population. It is characterized by disabling obsessions (intrusive unwanted thoughts) and/or compulsions (ritualized repetitive behaviors). Catechol-O-methyltransferase (COMT) enzyme has an important role in inactivation of dopamine and higher dopamine levels may be implicated in OCD, hence COMT gene is a suitable candidate for OCD. Several case-control studies have evaluated the role of COMT Val 158Met (rs4680;472G- > A) polymorphism as a risk factor for OCD but the results remained inconclusive, hence present meta-analysis was designed to find out correct assessment. All studies that investigated the association of COMT gene Val158Met polymorphism with OCD risk, were considered in the present meta-analysis. Statistical analysis was performed with the software program MetaAnalyst. In the current meta-analysis, 14 case-control studies with 1435 OCD cases and 2753 healthy controls were included. The results indicated significant association between COMT Val158Met polymorphism and OCD risk using allele contrast, homozygote and dominant models (ORA vs G = 1.14; 95% CI = 1.02-1.27; p = 0.01; ORAAvs.GG = 1.33; 95% CI = 1.09-1.62, p = 0.004; ORAA + AGvs.GG = 1.14; 95% CI = 1.0-1.32; p = 0.04). In subgroup analysis based on case gender, meta-analysis of male cases showed significant association using all five genetic models (ORAAvsGG = 1.99; 95%CI = 1.42-2.59; p = <0.001; ORAA + AGvs.GG = 1.59; 95% CI = 1.20-2.10; p = 0.001), but did not show any association between COMT Val 158Met polymorphism and OCD risk in females. In conclusion, results of present meta-analysis supports that the COMT Val158Met polymorphism is a risk factor for OCD especially for males.
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Affiliation(s)
- Pradeep Kumar
- VBS Purvanchal University, Jaunpur, Jaunpur, UP, India
| | - Vandana Rai
- VBS Purvanchal University, Jaunpur, Jaunpur, UP, India.
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Combined presence of coagulation factor XIII V34L and plasminogen activator inhibitor 1 4G/5G gene polymorphisms significantly contribute to recurrent pregnancy loss in Serbian population. J Med Biochem 2020; 39:199-207. [PMID: 33033453 DOI: 10.2478/jomb-2019-0028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/06/2019] [Indexed: 11/20/2022] Open
Abstract
Background Recurrent pregnancy loss (RPL) is a heterogeneous condition affecting up to 5% of women of reproductive age. Inherited thrombophilia have been postulated as one of the causes of RPL. Here we examined the prevalence of nine thrombophilic gene polymorphisms among women with history of recurrent miscarriages and fertile controls. Methods The study included 70 women with history of at least three early pregnancy losses and 31 fertile controls with no miscarriages. We investigated mutations in genes responsible for clotting and fibrinolysis, including factor V (FV) Leiden, FV H1299R, factor II (FII) G20210A, methylene tetrahydrofolate reductase (MTHFR) C677T and A1298C, factor XIII (FXIII) V34L, plasminogen activator inhibitor-1 (PAI-1) 4G/5G and endothelial protein C receptor (EPCR) H1 and H3 haplotypes using reverse polymerase chain reaction ViennaLab cardiovascular disease StrippAssays. Results Our results showed no significant increase in prevalence of tested polymorphisms in women with RPL. However, relative risk for PRL among women heterozygous for FXIII V34L was 2.81 times increased (OR 2.81, 95% CI 1.15-6.87, P=0.023). Haplotype analysis showed that combined presence of high-risk genotypes for FXIII and PAI-1 significantly increases risk for RPL (OR 13.98, CI 95% 1.11-17.46, P=0.044). Conclusions This is the first study in Serbian population that investigated prevalence of FVR2, A1298C, FXIII V34L and EPCR gene variants. Compound heterozygosity for FXIII V34L and PAI-1 4G is significant risk factor for recurrent miscarriage. Our results should be viewed in context of small case-control study, so further large prospective studies are need for confirmation of our findings.
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3'-UTR Polymorphisms in the Vascular Endothelial Growth Factor Gene (VEGF) Contribute to Susceptibility to Recurrent Pregnancy Loss (RPL). Int J Mol Sci 2019; 20:ijms20133319. [PMID: 31284523 PMCID: PMC6651559 DOI: 10.3390/ijms20133319] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/01/2019] [Accepted: 07/03/2019] [Indexed: 12/11/2022] Open
Abstract
Numerous studies have examined the genetic association of vascular endothelial growth factor (VEGF) single nucleotide polymorphisms (SNPs) with recurrent pregnancy loss (RPL). However, of the four known SNPs in the 3′-untranslated region (3′-UTR) of VEGF, three SNPs—namely rs3025040 (1451C>T), rs10434 (1612G>A), and rs3025053 (1725G>A)—remain poorly characterized with regard to RPL. Herein, we evaluated the association between these three SNPs in the VEGF 3′-UTR and RPL susceptibility. We analyzed VEGF 3′-UTR gene variants in with and without RPL using TaqMan allelic discrimination. There were significant differences in the genotype frequencies of 1612G>A (GA: adjusted odds ratio (AOR), 0.652; 95% confidence interval (CI), 0.447–0.951; p = 0.026) and 1725G>A (GA: AOR, 0.503; 95% CI, 0.229–0.848; p = 0.010) in RPL patients vs. controls. Our results indicate that the 1612G>A and 1725G>A polymorphisms in the 3′-UTR of VEGF are associated with RPL susceptibility in Korean women. These data suggest that VEGF 3′-UTR polymorphisms may be utilized as biomarkers for the detection of RPL risk and prevention.
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Polymorphisms of methalenetetrahydrofolate reductase in recurrent pregnancy loss: an overview of systematic reviews and meta-analyses. J Assist Reprod Genet 2019; 36:1315-1328. [PMID: 31254142 DOI: 10.1007/s10815-019-01473-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 05/02/2019] [Indexed: 12/12/2022] Open
Abstract
PURPOSE The aim is to summarize and evaluate current systematic reviews and meta-analyses on MTHFR polymorphisms in recurrent pregnancy loss (RPL). METHODS We searched Pubmed and Embase databases and selected in form of PICOS (participants, interventions, comparisons, outcomes, and study design). Our methodology was registered on PROSPERO (CRD42017042762). Systematic reviews and meta-analyses containing primary studies were extracted for meta-analyses, along with their OR and 95%CI. We assessed the quality of the included studies using AMSTAR and OQAQ criteria. RESULTS Eleven systematic reviews and meta-analyses were identified. C677T was significantly related to RPL overall in Allele (OR, 95%CI 1.43, 1.29-1.60), Recessive (OR, 95%CI 1.66, 1.42-1.95), and Homozygous (OR, 95%CI 2.08, 1.66-2.61). There was no correlation observed between A1298C and RPL, except for in Heterozygous (OR, 95%CI 1.62, 1.17-2.25). CONCLUSIONS We identified a difference in the association between MTHFR C677T polymorphism and RPL, especially in Asian population. No significant correlation was found between A1298C and RPL.
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Hou J, Zeng X, Xie Y, Wu H, Zhao P. Genetic polymorphisms of methylenetetrahydrofolate reductase C677T and risk of ischemic stroke in a southern Chinese Hakka population. Medicine (Baltimore) 2018; 97:e13645. [PMID: 30572478 PMCID: PMC6320192 DOI: 10.1097/md.0000000000013645] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Previous studies have shown that methylenetetrahydrofolate reductase (MTHFR) gene to be a genetic risk factor for the susceptibility to ischemic stroke. The aim of this case-control study was to investigate whether the polymorphisms of MTHFR C677T were associated with the susceptibility to ischemic stroke in a southern Chinese Hakka population. In this study, a total of 1967 ischemic stroke patients and 2565 controls of Chinese Hakka ethnicity were recruited. The MTHFR C677T polymorphisms were genotyped by polymerase chain reaction (PCR) amplification and microarray method. The risk of ischemic stroke was estimated by logistic regression analysis. The frequencies of CC, CT, and TT genotypes were 52.67% versus 55.63%, 40.31% versus 38.52%, and 7.02% versus 5.85% in patients with ischemic stroke versus controls, respectively. The frequency of T allele was significantly higher in ischemic stroke patients (27.17%) than in controls (25.11%) (P = .026, odds ratio [OR] 1.113, 95% confidence interval [CI] 1.013-1.223). The homozygous TT genotype in the ischemic stroke patients was associated with increased risk (P = .049, OR 1.132, 95% CI 1.001-1.281) when compared with the controls after adjustment for age and sex. The positive association was only found in dominant model without adjustment for age and sex (P = .047, OR 1.127, 95% CI 1.002-1.268). Also, the carrier status of the MTHFR T allele was identified as an independent risk factor for the development ischemic stroke even after the adjustment for conventional risk factors (P = 0.047, OR 1.109, 95% CI 0.964-1.225). Our results provide evidence that variants of MTHFR C677T gene may influence the risk of developing ischemic stroke in a southern Chinese Hakka population. Further studies are needed to confirm this association, which will promote the development of strategies for prevention and treatment of ischemic stroke in our study population.
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Affiliation(s)
- Jingyuan Hou
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, P.R. China
| | - Xing Zeng
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, P.R. China
| | - Yunquan Xie
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, P.R. China
| | - Hesen Wu
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, P.R. China
| | - Pingsen Zhao
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, P.R. China
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Kumar P, Rai V. MTHFR C677T polymorphism and risk of esophageal cancer: An updated meta-analysis. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2018. [DOI: 10.1016/j.ejmhg.2018.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Methylenetetrahydrofolate reductase C677T polymorphism and susceptibility to epilepsy. Neurol Sci 2018; 39:2033-2041. [DOI: 10.1007/s10072-018-3583-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 09/15/2018] [Indexed: 12/27/2022]
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15
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Abstract
There are several known causes of recurrent pregnancy loss (RPL) in a couple, which include endocrine abnormalities, immunologic abnormalities, structural uterine abnormalities and karyotype abnormalities. The evaluation largely focuses on the female. The male contribution to RPL remains understudied. With the exception of the karyotype analysis, there is currently no other recommended testing for the male partner of a woman who has suffered multiple pregnancy losses. Chromosomal abnormalities are well defined causes of pregnancy losses in the literature. However, despite the fact that abnormal DNA fragmentation has been implicated in the pathogenesis of unexplained RPL, it is not routinely checked during the evaluation of RPL. This is likely due to the fact that abnormal DNA fragmentation is the end result of multiple different mechanisms including environmental exposures, varicoceles, gene alteration and epigenetic changes resulting in an inherent susceptibility to DNA damage? We are just beginning to scratch the surface of our understanding of the male contribution to RPL and more studies especially focusing on epigenetic modifications and gene alterations are needed.
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Affiliation(s)
- Yetunde Ibrahim
- Utah Center for Reproductive Medicine, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Erica Johnstone
- Utah Center for Reproductive Medicine, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT, USA
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16
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Kałużna EM, Strauss E, Świątek-Kościelna B, Zając-Spychała O, Gowin E, Nowak JS, Rembowska J, Januszkiewicz-Lewandowska D. The methylenetetrahydrofolate reductase 677T-1298C haplotype is a risk factor for acute lymphoblastic leukemia in children. Medicine (Baltimore) 2017; 96:e9290. [PMID: 29390492 PMCID: PMC5758194 DOI: 10.1097/md.0000000000009290] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The etiology of acute lymphoblastic leukemia (ALL) is complex, linked with both environmental exposures and genetic factors. Functional variants of the methylenetetrahydrofolate reductase (MTHFR) gene result in disturbance in folate metabolism and may affect susceptibility to cancer. The study was performed to evaluate whether MTHFR C677T and A1298C polymorphisms, analyzed separately and together, are associated with the development of ALL in a population under 18 years of age of Caucasian ancestry.The study included 117 pediatric patients (59% males, mean age at diagnosis 7.4 ± 5.2 years) with ALL, confirmed by conventional immunophenotyping surface-marker analysis and 404 healthy control subjects (48.5% men, mean age 37.7 ± 11.3 years). The MTHFR C677T and A1298C genotypes were analyzed using allele discrimination tests with Taq-Man fluorescent probes.The MTHFR 677TT genotype was related to a 2-fold increase in risk of ALL (P = .014). The 677T-1298C haplotype was found in ALL patients but not in controls (frequency 0.598%; P <.0001). The observed frequency of carriers of this rare haplotype was 12%, including 677CT/1298CC (1.7%), 677TT/1298AC (6.0%), and 677CT/1298AC (4.3%) genotypes.The MTHFR 677T allele alone or in combination with the MTHFR 1298C allele significantly increases the risk of development of ALL in Polish population under 18 years of age. Further studies of haplotype composition in subjects with the 677CT/1298AC genotype are necessary to assess the risk of childhood ALL.
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Affiliation(s)
| | - Ewa Strauss
- Institute of Human Genetics, Polish Academy of Sciences
- Department of Internal and Vascular Surgery, Poznan University of Medical Sciences, Laboratory for Basic Research and Translational Medicine
| | | | - Olga Zając-Spychała
- Department of Pediatric Oncology, Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences
| | - Ewelina Gowin
- Department of Family Medicine, Poznan University of Medical Sciences
| | | | | | - Danuta Januszkiewicz-Lewandowska
- Department of Pediatric Oncology, Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences
- Department of Medical Diagnostics, Poznan, Poland
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17
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Hwang KR, Choi YM, Kim JJ, Lee SK, Yang KM, Paik EC, Jeong HJ, Jun JK, Yoon SH, Hong MA. Methylenetetrahydrofolate Reductase Polymorphisms and Risk of Recurrent Pregnancy Loss: a Case-Control Study. J Korean Med Sci 2017; 32:2029-2034. [PMID: 29115087 PMCID: PMC5680504 DOI: 10.3346/jkms.2017.32.12.2029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/09/2017] [Indexed: 12/02/2022] Open
Abstract
The balance between coagulation and fibrinolysis is an essential part in early pregnancy. Mutations in methylenetetrahydrofolate reductase (MTHFR) gene lead to decreased activity of the enzyme and hyperhomocysteinemia, which then induces platelet aggregation by promoting endothelial oxidative damage, possibly resulting in adverse effect on maintenance of pregnancy. We investigated the role of MTHFR single nucleotide polymorphisms (SNPs), C677T and A1298C, in Korean patients with recurrent pregnancy loss (RPL). We conducted a prospective case-control study in the Korean population. Subjects included 302 women with 2 or more consecutive, unexplained, spontaneous miscarriages before 20 weeks of gestation and 315 control women without a history of recurrent miscarriages. The genotyping for C677T and A1298C polymorphisms was performed using the TaqMan assay. Continuous variables were compared using Student's t-test, and χ² test was used to evaluate differences in the genotype distributions between the RPL and the controls. The genotype distribution of both polymorphisms in the RPL group did not differ from those of the controls. For further analysis, if RPL patients were divided according to the numbers of pregnancy losses (≥ 2 and ≥ 3) neither group was significantly different compared with controls. MTHFR gene C677T and A1298C polymorphisms are not associated with idiopathic RPL in Korean women, suggesting that those may not be susceptible allelic variants or be deficient to cause RPL.
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Affiliation(s)
- Kyu Ri Hwang
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Young Min Choi
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- The Institute of Reproductive Medicine and Population, Medical Research Centre, Seoul National University College of Medicine, Seoul, Korea.
| | - Jin Ju Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - Sung Ki Lee
- Department of Obstetrics and Gynecology, Konyang University College of Medicine, Daejeon, Korea
| | - Kwang Moon Yang
- Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center, Dankook University, College of Medicine, Seoul, Korea
| | - Eun Chan Paik
- Department of Obstetrics and Gynecology, Bundang Cheil Women's Hospital, Sungnam, Korea
| | - Hyeon Jeong Jeong
- Department of Obstetrics and Gynecology, Seoul Rachel Fertility Center, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Ho Yoon
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Dongguk University, Seoul, Korea
| | - Min A Hong
- The Institute of Reproductive Medicine and Population, Medical Research Centre, Seoul National University College of Medicine, Seoul, Korea
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18
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Kim ES, Kim JO, An HJ, Sakong JH, Lee HA, Kim JH, Ahn EH, Kim YR, Lee WS, Kim NK. MTHFR 3'-untranslated region polymorphisms contribute to recurrent pregnancy loss risk and alterations in peripheral natural killer cell proportions. Clin Exp Reprod Med 2017; 44:152-158. [PMID: 29026722 PMCID: PMC5636928 DOI: 10.5653/cerm.2017.44.3.152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 07/05/2017] [Accepted: 07/05/2017] [Indexed: 12/12/2022] Open
Abstract
Objective To identify the associations between polymorphisms of the 3′-untranslated region (UTR) of methylenetetrahydrofolate reductase (MTHFR) gene, which codes for an important regulatory enzyme primarily involved in folate metabolism, and idiopathic recurrent pregnancy loss (RPL) in Korean women. Methods The study population comprised 369 RPL patients and 228 controls. MTHFR 2572C>A, 4869C>G, 5488C>T, and 6685T>C 3′-UTR polymorphisms were genotyped by polymerase chain reaction-restriction fragment length polymorphism analysis or by TaqMan allelic discrimination assays. Natural killer cell proportions were determined by flow cytometry. Results The MTHFR 2572-5488-6685 (A-C-T) haplotype had an adjusted odds ratio of 0.420 (95% confidence interval, 0.178–0.994; p=0.048) for RPL. Analysis of variance revealed that MTHFR 4869C>G was associated with altered CD56+ natural killer cell percentages (CC, 17.91%±8.04%; CG, 12.67%±4.64%; p=0.024) and folate levels (CC, 12.01±7.18 mg/mL; CG, 22.15±26.25 mg/mL; p=0.006). Conclusion Variants in the 3′-UTR of MTHFR are potential biomarkers for RPL. However, these results should be validated in additional studies of ethnically diverse groups of patients.
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Affiliation(s)
- Eun Sun Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
| | - Jung Oh Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
| | - Hui Jeong An
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
| | - Jung Hyun Sakong
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
| | - Hyun Ah Lee
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
| | - Ji Hyang Kim
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Eun Hee Ahn
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Young Ran Kim
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Woo Sik Lee
- Fertility Center of CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Nam Keun Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Korea
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19
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Jung JH, Kim JH, Song GG, Choi SJ. Association of the F13A1 Val34Leu polymorphism and recurrent pregnancy loss: A meta-analysis. Eur J Obstet Gynecol Reprod Biol 2017; 215:234-240. [DOI: 10.1016/j.ejogrb.2017.06.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 12/24/2022]
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20
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Rai V. Strong Association of C677T Polymorphism of Methylenetetrahydrofolate Reductase Gene With Nosyndromic Cleft Lip/Palate (nsCL/P). Indian J Clin Biochem 2017; 33:5-15. [PMID: 29371764 DOI: 10.1007/s12291-017-0673-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/23/2017] [Indexed: 02/07/2023]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is essential for DNA biosynthesis and the epigentic process of DNA methylation. It has been reported that abnormal DNA methylation contributes to the pathogenesis of congenital anomalies. There were many published case control studies assessing the associations of MTHFR C677T polymorphism with risks of nosyndromic cleft lip with and without palate (nsCL/P), but with inconsistent results. To derive a more precise estimation of the relationship, a meta-analysis was performed. Eligible articles were identified by search of databases including PubMed, Science Direct, Google Scholar and Springer Link up to December, 2015. Finally, a total of 22 studies with 3724 nsCL/P cases and 5275 controls were included in the present meta-analysis. Odds ratios (ORs) with corresponding 95% confidence intervals (95% CIs) were pooled to assess the association. Subgroup analysis based on ethnicity was also performed. All statistical analyses were done by MIX program. Meta-analysis results suggested that MTHFR C677T polymorphism contributed to the increased nsCL/P risk in overall population using four genetic models except homozygote model (for T vs. C: OR = 1.24, 95% CI = 1.1-1.4; for TT + CT vs. CC: OR = 1.29, 95% CI = 1.04-1.59; for CT vs. CC: OR = 1.26, 95% CI = 0.98-1.63; for TT vs. CC: OR = 1.02, 95% CI = 0.74-1.4; for TT vs. CT + CC: OR = 1.36, 95% CI = 1.05-1.74). In conclusion, results of present meta-analysis suggested that MTHFR C677T polymorphism is significantly associated with nonsyndromic orofacial cleft.
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Affiliation(s)
- Vandana Rai
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, 222003 India
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