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More A, Gajbe U, Olatunji O, Singh B. MTHFR Gene-Polymorphism and Infertile Men in Indian Population: A Systematic Literature Review. Cureus 2022; 14:e27075. [PMID: 36000135 PMCID: PMC9390949 DOI: 10.7759/cureus.27075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/20/2022] [Indexed: 11/05/2022] Open
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Alhumaydhi FA, Mackawy AMH, Morgan EN, Al Abdulmonem W, Alsagaby SA, Alwashmi ASS, Aljohani ASM, Aljasir MA, Almatroodi SA, Alruwetei AM, Mousa AM. Potential role of folic acid in preventing male infertility associated with MTHFR gene C677T (rs1801133) polymorphism. All Life 2021. [DOI: 10.1080/26895293.2021.1963846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Amal M. H. Mackawy
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
- Department of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Enas N. Morgan
- Department of Physical Therapy, College of Medical Rehabilitation, Qassim University, Buraydah, Saudi Arabia
- Department of Physiology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Suliman A. Alsagaby
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, Saudi Arabia
| | - Ameen S. S. Alwashmi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Abdullah S. M. Aljohani
- Department of Veterinary Medicine, College of Agricultural and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Mohammad A. Aljasir
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Saleh A. Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Abdulmohsen M. Alruwetei
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Ayman M. Mousa
- Department of Basic Health Sciences, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
- Department of Histology and Cell Biology, Faculty of Medicine, Benha University, Benha, Egypt
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Dahadhah FW, Saleh Jaweesh M, Al Zoubi MS, Issam Abu Alarjah M, Hammadeh ME, Amor H. Lack of association between single polymorphic variants of the mitochondrial nicotinamide adenine dinucleotide dehydrogenase 3, and 4L (MT-ND3 and MT-ND4L) and male infertility. Andrologia 2021; 53:e14139. [PMID: 34120353 DOI: 10.1111/and.14139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/03/2021] [Accepted: 05/17/2021] [Indexed: 01/08/2023] Open
Abstract
Male infertility is a multifactorial condition associated with different genetic abnormalities in at least 15%-30% of cases. The purpose of this study was to identify suspected correlations between infertility and polymorphisms in mitochondrial NADH dehydrogenase subunits 3 and 4L (MT-ND3 and MT-ND4L) in subfertile male spermatozoa. Sanger sequencing of the mitochondrial DNA target genes was performed on 68 subfertile and 44 fertile males. Eight single nucleotide polymorphisms (SNPs) in MT-ND3 (rs2853826, rs28435660, rs193302927, rs28358278, rs41467651, rs3899188, rs28358277 and rs28673954) and seven SNPs in MT-ND4L (rs28358280, rs28358281, rs28358279, rs2853487, rs2853488, rs193302933 and rs28532881) were detected and genotyped. The genotypes and allele frequencies of the study population have shown a lack of statistically significant association between MT-ND3 and MT-ND4L SNPs and male infertility. However, no statistically significant association was found between the asthenozoospermia, oligozoospermia, teratozoospermia, asthenoteratozoospermia, oligoasthenoteratozoospermia and oligoteratozoospermia subgroups of subfertile males. However, rs28358278 genotype of the MT-ND3 gene was reported in the subfertile group but not in the fertile group, which implies a possible role of this SNP in male infertility. In conclusion, the investigated polymorphic variants in the MT-ND3 and MT-ND4L genes did not show any significant association with the occurrence of male infertility. Further studies are required to evaluate these findings. Moreover, the subfertile individuals who exhibit a polymorphism at rs28358278 require further monitoring and evaluation.
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Affiliation(s)
- Fatina W Dahadhah
- Department of Obstetrics & Gynaecology, Saarland University, Homburg/Saar, Germany
| | - Mayyas Saleh Jaweesh
- Department of Obstetrics & Gynaecology, Saarland University, Homburg/Saar, Germany
| | - Mazhar Salim Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Manal Issam Abu Alarjah
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Mohamad Eid Hammadeh
- Department of Obstetrics & Gynaecology, Saarland University, Homburg/Saar, Germany
| | - Houda Amor
- Department of Obstetrics & Gynaecology, Saarland University, Homburg/Saar, Germany
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Han LJ, He XF, Ye XH. Methylenetetrahydrofolate reductase C677T and A1298C polymorphisms and male infertility risk: An updated meta-analysis. Medicine (Baltimore) 2020; 99:e23662. [PMID: 33371103 PMCID: PMC7748209 DOI: 10.1097/md.0000000000023662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/07/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND 18 previous meta-analyses have been published on the methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C polymorphisms with male infertility risk. However, results of the previous meta-analyses were still inconsistent. Moreover, their meta-analyses did not assess false-positive report probabilities except one study. Furthermore, many new studies have been published, and therefore an updated meta-analysis and re-analysis of systematic previous meta-analyses were performed to further explore these issues. OBJECTIVES To determine the association between MTHFR C677T and A1298C polymorphisms and male infertility risk. METHODS Crude odds ratios and their 95% confidence intervals were used to assess the association between MTHFR C677T and A1298C polymorphisms and male infertility risk. We used the Bayesian false discovery probability (BFDP) to assess the credibility of statistically significant associations. RESULTS Fifty-nine studies were included concerning the MTHFR C677T and 28 studies were found on the MTHFR A1298C with male infertility risk. Overall, the MTHFR C677T was associated with increased male infertility risk in overall populations, Africans, East Asians, West Asians, South Asians, azoospermia, and Oligoasthenoteratozoospermia (OAT). In further sensitivity analysis and BFDP test, the positive results were only considered as "noteworthy" in the overall population (TT vs CC: BFDP = 0.294, CT + TT vs CC: BFDP = 0.300, T vs C: BFDP = 0.336), East Asians (TT vs CC: BFDP = 0.089, TT vs CT + CC: BFDP = 0.020, T vs C: BFDP < 0.001), West Asians (TT vs CC: BFDP = 0.584), hospital-based studies (TT vs CC: BFDP = 0.726, TT vs CT + CC: BFDP = 0.126), and OAT (TT vs CT + CC: BFDP = 0.494) for MTHFR C677T. In addition, a significantly increased male infertility risk was found in East Asians and population-based studies for MTHFR A1298C. However, we did not find that the positive results were considered as "noteworthy" in the overall and all subgroup analyses for MTHFR A1298C. CONCLUSIONS In summary, this study indicates that the MTHFR C677T is associated with increased male infertility risk in East Asians, West Asians, and OAT. No significant association was observed on the MTHFR A1298C with male infertility risk.
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Affiliation(s)
| | - Xiao-Feng He
- Department of Science and Education, Heping Hospital Affiliated to Changzhi Medical College, Shanxi, Changzhi city
| | - Xiang-Hua Ye
- Department of Radiotherapy, First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Hangzhou city, PR China
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Imani MM, Golchin N, Safaei M, Rezaei F, Abbasi H, Sadeghi M, Lopez-Jornet P, Mozaffari HR, Sharifi R. Methylenetetrahydrofolate reductase C677T polymorphism is not associated with the risk of nonsyndromic cleft lip/palate: An updated meta-analysis. Sci Rep 2020; 10:1531. [PMID: 32001764 PMCID: PMC6992667 DOI: 10.1038/s41598-020-58357-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 12/18/2019] [Indexed: 11/08/2022] Open
Abstract
Both genetic and environmental factors affect the risk of orofacial clefts. The present meta-analysis aimed to evaluate the association between methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and risk of nonsyndromic cleft lip/palate (NSCL/P) in cases-control studies. The PubMed/Medline, Scopus, Web of Science, and Cochrane Library databases were searched up to April 2019 with no restrictions. The odds ratios (ORs) and 95% confidence intervals (CIs) in all analyses were calculated by Review Manager 5.3 software. The funnel plot analysis was carried out by the Comprehensive Meta-Analysis version 2.0 software. Subgroup analysis, meta-regression, and sensitivity analysis were performed for the pooled analyses. Thirty-one studies reviewed in this meta-analysis included 4710 NSCL/P patients and 7271 controls. There was no significant association between MTHFR C677T polymorphism and NSCL/P susceptibility related to allelic model (OR = 1.04; P = 0.49), homozygote model (OR = 1.11; P = 0.35), heterozygote model (OR = 0.99; P = 0.91), dominant model (OR = 1.00; P = 0.96), or recessive model (OR = 1.08; P = 0.23). There was no significant association between MTHFR C677T polymorphism and NSCL/P susceptibility based on the ethnicity or the source of cases. There was a significant linear relationship between the year of publication and log ORs for the allele model. The results of the present meta-analysis failed to show an association between MTHFR C677T polymorphism and NSCL/P susceptibility. The subgroup analyses based on the ethnicity and the source of cases further confirmed this result.
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Affiliation(s)
- Mohammad Moslem Imani
- Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
| | - Negin Golchin
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, 6715847141, Iran
| | - Mohsen Safaei
- Advanced Dental Sciences Research Laboratory, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
| | - Farzad Rezaei
- Department of Oral and Maxillofacial Surgery, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
| | - Hooshyar Abbasi
- Department of Oral and Maxillofacial Surgery, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
| | - Masoud Sadeghi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, 6714415185, Iran.
| | - Pia Lopez-Jornet
- Facultad de Medicina y Odontologia Universidad de Murcia, Hospital Morales Meseguer, Clinica Odontologic Adv Marques Velez s/n, 30008, Murcia, Spain
| | - Hamid Reza Mozaffari
- Department of Oral and Maxillofacial Medicine, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
| | - Roohollah Sharifi
- Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, 6713954658, Iran
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Shi TL, Wu Y, Li Y, Chen ZF, Ma YN, Zhang ZT, Zhang YH, Zhang L. The relevance of MTHFR C677T, A1298C, and MTRR A66G polymorphisms with response to male infertility in Asians: A meta-analysis. Medicine (Baltimore) 2019; 98:e14283. [PMID: 30813130 PMCID: PMC6408114 DOI: 10.1097/md.0000000000014283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Although published studies have reported the association between MTHFR C677T (rs 1801133), A1298C (rs 1801131), and MTRR A66G (rs1801394) polymorphisms and male infertility in Asian populations, the results are conflicting. In order to accurately evaluate the relevance, a meta-analysis was performed.We searched for potential studies in 4 databases, containing PubMed, ScienceDirect, China National Knowledge Infrastructure (CNKI), and Wanfang database until May 31, 2018. The summarized odds ratio (OR) with 95% confidence intervals (95% CI) were calculated to evaluate the relevance in 5 genetic models. The heterogeneity test, sensitivity analysis, and publication bias test was performed by Review Manager 5.3 software.Overall, 22 case-control studies with 5049 cases and 4157 controls were included in this meta-analysis, which contained 20 studies of MTHFR C677T polymorphism, 12 studies of MTHFR A1298C polymorphism and 4 studies of MTRR A66G polymorphism. The results indicated that MTHFR C677T, A1298C, and MTRR A66G polymorphisms were significantly associated with male infertility in Asian populations (Dominant model: MTHFR CC + CT vs TT: OR = 0.60, 95% CI (0.53, 0.67), P <.00001; MTHFR AA + AC vs CC: OR = 0.62, 95% CI (0.49, 0.79), P = .0001; MTRR AA + AG vs GG: OR = 0.60, 95% CI (0.45, 0.81), P = .001. Recessive model: MTHFR CC vs CT + TT: OR = 0.67, 95% CI (0.61, 0.74), P <.00001; MTHFR AA vs AC + CC: OR = 0.79, 95% CI (0.70, 0.88), P <.0001; MTRR AA vs AG + GG: OR = 0.70, 95% CI (0.56, 0.88), P = .002. Heterozygote model: MTHFR CC vs CT: OR = 0.74, 95% CI (0.67, 0.82), P <.00001; MTHFR AA vs AC: OR = 0.83, 95% CI (0.73, 0.93), P = .002; MTRR AA vs AG: OR = 0.76, 95% CI (0.60, 0.92), P = .02. Homozygote model: MTHFR CC vs TT: OR = 0.48, 95% CI (0.41, 0.56), P <.00001; MTHFR AA vs CC: OR = 0.61, 95% CI (0.39, 0.93), P = .02; MTRR AA vs GG: OR = 0.51, 95% CI (0.36, 0.72), P = .0001. Allele model: MTHFR C vs T: OR = 0.70, 95% CI (0.66, 0.75), P <.00001; MTHFR A vsC: OR = 0.82, 95% CI (0.71, 0.95), P = .01; MTRR A vs G: OR = 0.76, 95% CI (0.66, 0.88), P = .00003). Stratified analyses by geographical location and source of controls showed the same results. Sensitivity analyses indicated that the final consequences of this meta-analysis were stable, and the publication biases test had not found obvious asymmetry.This meta-analysis indicates that MTHFR C677T, A1298C, and MTRR A66G polymorphisms are the risk factors with susceptibility to male infertility in Asians.
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Affiliation(s)
- Tian-Lu Shi
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yan Wu
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yu Li
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
- Department of Pharmacy, Anhui Province Taihe County People's Hospital, Taihe
| | - Zhen-Feng Chen
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yi-Ni Ma
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Zhe-Tao Zhang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yong-Huang Zhang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
- Department of Pharmacy, Hefei Binhu Hospital, Hefei, Anhui, P.R. China
| | - Lei Zhang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei
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Ullah N, Mansoor A, Micheal S, Mirza B, Qamar R, Mazhar K, Siddiqi S. MTHFR polymorphisms as risk for male infertility in Pakistan and its comparison with socioeconomic status in the world. Per Med 2019; 16:35-49. [DOI: 10.2217/pme-2018-0045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aim: 5,10-MTHFR-single nucleotide polymorphisms are important for normal functioning of the enzyme that plays a key role in DNA synthesis, folate metabolism and methylation reactions. Methodology & results: Male infertility association of C665T and A1298C polymorphisms was explored, this topic is still debatable. Infertile men (232) and controls (114) were genotyped and statistically analyzed. Comparison of patients (6180) and controls (5744) of Caucasian populations was performed by meta-analysis. Pooled results showed A1298C minor allele and homozygous genotype to be of a significantly higher frequency in the low-income group. Increase in per capita income has shown an increasing trend in the minor allele frequency in various world populations, potentially due to dietry-folate compensation. Conclusion: A1298C seems more relevant marker than C665T for infertility association in Caucasian populations and may be addressed by improving dietary folate.
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Affiliation(s)
- Noor Ullah
- Institute of Biomedical & Genetic Engineering (IB & GE), 24 Mauve Area, G9/1, Islamabad 44000, Pakistan
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 44000, Pakistan
| | - Atika Mansoor
- Institute of Biomedical & Genetic Engineering (IB & GE), 24 Mauve Area, G9/1, Islamabad 44000, Pakistan
| | - Shazia Micheal
- Department of Biosciences, COMSATS Institute of Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
| | - Bushra Mirza
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 44000, Pakistan
| | - Raheel Qamar
- Department of Biosciences, COMSATS Institute of Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
| | - Kehkashan Mazhar
- Institute of Biomedical & Genetic Engineering (IB & GE), 24 Mauve Area, G9/1, Islamabad 44000, Pakistan
| | - Saima Siddiqi
- Institute of Biomedical & Genetic Engineering (IB & GE), 24 Mauve Area, G9/1, Islamabad 44000, Pakistan
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Zhang Q, Yin G, Liu J, Liang Y, Li Y, Zhao J, Zhang L, Wang B, Tang N. Association between MTHFR A1298C polymorphism and male infertility: A meta-analysis. ACTA ACUST UNITED AC 2017; 37:153-60. [DOI: 10.1007/s11596-017-1709-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 10/28/2016] [Indexed: 12/30/2022]
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Hong HH, Hu Y, Yu XQ, Zhou L, Lv MQ, Sun Y, Ren WJ, Zhou DX. Associations of C677T polymorphism in methylenetetrahydrofolate reductase (MTHFR) gene with male infertility risk: A meta-analysis. Eur J Obstet Gynecol Reprod Biol 2017; 212:101-109. [PMID: 28363185 DOI: 10.1016/j.ejogrb.2017.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 02/20/2017] [Accepted: 03/01/2017] [Indexed: 01/11/2023]
Abstract
PURPOSE Methylenetetrahydrofolate reductase is one of the key enzymes in folate metabolism. But the association between polymorphism and the risk of male infertility is still controversial. Therefore, this study used a meta-analysis on the collection of data to analyze MTHFR gene C677T polymorphism (known as c.665 C>T, rs1801133, p.Ala222Val). METHODS PubMed, EMBASE, China National Knowledge Infrastructure (CNKI), and Wan fang. Data were searched to identify eligible studies. We sifted the data collection by Hardy-Weinberg equilibrium calculator and used odds ratios (ORs) and 95% confidence intervals (95% CIs) to conduct data through RevMan5.0 and StataSE12.0 software. RESULTS A total of 15 studies have 3853 patients with infertility and 3613 healthy controls in this meta-analysis. Our results showed that T variant of MTHFR C677T gene polymorphism was significantly associated with an increased risk of male infertility (forT vs. C: OR=1.38, 95% CI=1.18-1.63; for TT vs. CC: OR=1.86, 95% CI=1.36-2.54; for CT vs. CC: OR=1.34, 95% CI=1.03-1.74; for TT vs. CT: OR=1.52, 95% CI=1.26-1.84; for TT vs. CT+CC: OR=1.42, 95% CI=1.19-1.70; for TT+CT versus CC: OR=1.46, 95%CI=1.05-2.04). In addition, the results indicated that T allele had the positive association which was driven by East-asian populations (random: OR=1.44, 95% CI=1.2-1.74; fixed: OR=1.39, 95% CI=1.20-1.61), Middle-eastern populations (random: OR=1.30, 95% CI=1.05-1.63; fixed: OR=1.30, 95% CI=1.05-1.63) and Mixed-race (random: OR=1.96, 95% CI=1.35-2.85; fixed: OR=1.31, 95% CI=1.20-1.43). CONCLUSION This meta-analysis suggests that MTHFR C677T polymorphism is associated with male infertility.
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Affiliation(s)
- Hui-Hui Hong
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an 710061, China
| | - Yan Hu
- Department of Gynecology & Oncology , Shaanxi Provincial Tumor Hospital, Xi'an 710061, China
| | - Xiao-Qing Yu
- Department of Gynecology and Obstetrics, Kangfu Hospital of Shaanxi Province, Xi'an, China
| | - Liang Zhou
- Reproductive Medicine Center, North-West Maternal and child Hospital, Xi'an 710003, China
| | - Mo-Qi Lv
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an 710061, China
| | - Ying Sun
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an 710061, China
| | - Wen-Juan Ren
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an 710061, China; Reproductive Medicine Center, North-West Maternal and child Hospital, Xi'an 710003, China
| | - Dang-Xia Zhou
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an 710061, China.
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Rai V, Kumar P. Methylenetetrahydrofolate Reductase C677T Polymorphism and Risk for Male Infertility in Asian Population. Indian J Clin Biochem 2017; 32:253-60. [PMID: 28811683 DOI: 10.1007/s12291-017-0640-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 01/24/2017] [Indexed: 12/18/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a critical enzyme of folate pathway and required for DNA synthesis and methylation. MTHFE C677T polymorphisms is reported as risk factors for various diseases and disorders like birth defects, metabolic, neurological, psychiatric disorders, and cancers. Several studies have investigated association between the MTHFR C677T polymorphism and male infertility. To assess the risk associated with MTHFR C677T polymorphism in Asian population, a meta-analysis was performed. Included articles were collected from the following electronic databases: PubMed, Google Scholar, and Science direct up to March 2015. Risk was estimated as pooled odds ratios (ORs) with confidence intervals (CIs) for assessment. Seventeen case-control studies involving 4392 breast infertile males and 3667 fertile males were found suitable for the inclusion in the present meta-analysis. Results showed that the C677T polymorphism was significantly associated with male infertility in Asian population using all the five genetic models (ORT vs. C (allele contrast model) = 1.86, 95% CI 1.7-2.0; ORTT vs. CC (homozygote model) = 1.96, 95% CI 1.67-2.30; ORCT vs. CC (co-dominant model) = 1.40, 95% CI 1.18-1.62; ORTT+CT vs. CC (dominant model) = 1.53, 95% CI 1.30-1.77; ORTT vs. CT+CC (recessive model) = 1.67, 95% CI 1.44-1.92). In conclusion, results of present meta-analysis strongly supported an association between C677T polymorphism and male infertility in Asians.
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Ren Z, Ren P, Yang B, Fang K, Ren S, Liao J, Liu S, Liu L, Peng Z, Dong Q. MTHFR C677T, A1298C and MS A2756G Gene Polymorphisms and Male Infertility Risk in a Chinese Population: A Meta-Analysis. PLoS One 2017; 12:e0169789. [PMID: 28081209 PMCID: PMC5230789 DOI: 10.1371/journal.pone.0169789] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 12/21/2016] [Indexed: 02/05/2023] Open
Abstract
Background Methylenetetrahydrofolate reductase gene (MTHFR C677T and A1298C) and methionine synthase gene (MS A2756G) polymorphisms have shown an association with male infertility risk in several ethnic populations. Although several studies have evaluated these associations in Chinese populations, their small sample sizes and inconsistent outcomes have prevented strong conclusions. Therefore, the present meta-analysis was performed with published studies to evaluate the associations of the three single nucleotide polymorphisms (SNPs) and male infertility in a Chinese population. Methods We conducted a search of PubMed, Embase, Web of Science, Chinese National Knowledge Infrastructure (CNKI), China biology medical literature (CBM), VIP, and Chinese literature (Wan Fang) databases up to May 31, 2016. Odds ratios (ORs) and 95% confidence intervals (95%CIs) were used to assess the strength of associations with a random-effect model or a fixed-effect model based on the heterogeneity analysis results. Sensitivity analysis was used to confirm the reliability and stability of the meta-analysis. Results A total of nine studies, including 1,713 cases and 1,104 controls, were included in the meta-analysis. The pooled results indicated that the MTHFR C667T polymorphism was significantly associated with increased risk of male infertility in the Chinese population in the allele model (T vs. C: OR = 1.47, 95%CI = 1.32–1.63), the dominant model (TT + CT vs. CC: OR = 1.51, 95%CI = 1.30–1.77), the additive model (TT vs. CC: OR = 2.08, 95%CI = 1.68–2.58) and the recessive model (TT vs. CT+CC: OR = 1.58, 95%CI = 1.31–1.90), whereas the MTHFR A1298C and MS A2756G polymorphisms were not risk factors. There was no significant heterogeneity in any genotype contrasts among the studies. The sensitivity analysis indicated that the results of this meta-analysis were relatively stable. Conclusion This study suggests that the MTHFR C667T polymorphism may contribute to the genetic susceptibility to male infertility in the Chinese population, whereas MTHFR A1298C and MS A2756G polymorphisms may be unrelated to male infertility. Studies with larger sample sizes and representative population-based cases and well-matched controls are needed to validate our results.
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Affiliation(s)
- Zhengju Ren
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Pengwei Ren
- Department of Evidence-Based Medicine and Clinical Epidemiology, West China Hospital, Sichuan University, Chengdu, China
| | - Bo Yang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kun Fang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shangqing Ren
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jian Liao
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shengzhuo Liu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Liangren Liu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zhufeng Peng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qiang Dong
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- * E-mail:
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Zhu X, Liu Z, Zhang M, Gong R, Xu Y, Wang B. Association of the methylenetetrahydrofolate reductase geneC677Tpolymorphism with the risk of male infertility: a meta-analysis. Ren Fail 2015; 38:185-93. [DOI: 10.3109/0886022x.2015.1111086] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Liu K, Zhao R, Shen M, Ye J, Li X, Huang Y, Hua L, Wang Z, Li J. Role of genetic mutations in folate-related enzyme genes on Male Infertility. Sci Rep 2015; 5:15548. [PMID: 26549413 DOI: 10.1038/srep15548] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 09/29/2015] [Indexed: 01/11/2023] Open
Abstract
Several studies showed that the genetic mutations in the folate-related enzyme genes might be associated with male infertility; however, the results were still inconsistent. We performed a meta-analysis with trial sequential analysis to investigate the associations between the MTHFR C677T, MTHFR A1298C, MTR A2756G, MTRR A66G mutations and the MTHFR haplotype with the risk of male infertility. Overall, a total of 37 studies were selected. Our meta-analysis showed that the MTHFR C677T mutation was a risk factor for male infertility in both azoospermia and oligoasthenoteratozoospermia patients, especially in Asian population. Men carrying the MTHFR TC haplotype were most liable to suffer infertility while those with CC haplotype had lowest risk. On the other hand, the MTHFR A1298C mutation was not related to male infertility. MTR A2756G and MTRR A66G were potential candidates in the pathogenesis of male infertility, but more case-control studies were required to avoid false-positive outcomes. All of these results were confirmed by the trial sequential analysis. Finally, our meta-analysis with trial sequential analysis proved that the genetic mutations in the folate-related enzyme genes played a significant role in male infertility.
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Nikzad H, Karimian M, Sareban K, Khoshsokhan M, Hosseinzadeh Colagar A. MTHFR-Ala222Val and male infertility: a study in Iranian men, an updated meta-analysis and an in silico-analysis. Reprod Biomed Online 2015; 31:668-80. [DOI: 10.1016/j.rbmo.2015.07.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 07/27/2015] [Accepted: 07/30/2015] [Indexed: 12/13/2022]
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Gong M, Dong W, He T, Shi Z, Huang G, Ren R, Huang S, Qiu S, Yuan R. MTHFR 677C>T polymorphism increases the male infertility risk: a meta-analysis involving 26 studies. PLoS One 2015; 10:e0121147. [PMID: 25793386 PMCID: PMC4368707 DOI: 10.1371/journal.pone.0121147] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 02/10/2015] [Indexed: 12/19/2022] Open
Abstract
Background and Objectives Methylenetetrahydrofolate reductase (MTHFR) polymorphism may be a risk factor for male infertility. However, the epidemiologic studies showed inconsistent results regarding MTHFR polymorphism and the risk of male infertility. Therefore, we performed a meta-analysis of published case-control studies to re-examine the controversy. Methods Electronic searches of PubMed, EMBASE, Google Scholar and China National Knowledge Infrastructure (CNKI) were conducted to select eligible literatures for this meta-analysis (updated to June 19, 2014). According to our inclusion criteria and the Newcastle-Ottawa Scale (NOS), only high quality studies that observed the association between MTHFR polymorphism and male infertility risk were included. Crude odds ratio (OR) with 95% confidence interval (CI) was used to assess the strength of association between the MTHFR polymorphism and male infertility risk. Results Twenty-six studies involving 5,575 cases and 5,447 controls were recruited. Overall, MTHFR 677C>T polymorphism showed significant associations with male infertility risk in both fixed effects (CT+TT vs. CC: OR = 1.34, 95% CI: 1.23–1.46) and random effects models (CT+TT vs. CC: OR = 1.39, 95% CI: 1.19–1.62). Further, when stratified by ethnicity, sperm concentration and control sources, the similar results were observed in Asians, Caucasians, Azoo or OAT subgroup and both in population-based and hospital-based controls. Nevertheless, no significant association was only observed in oligo subgroup. Conclusions Our results indicated that the MTHFR polymorphism is associated with an increased risk of male infertility. Further well-designed analytical studies are necessary to confirm our conclusions and evaluate gene-environment interactions with male infertility risk.
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Affiliation(s)
- Mancheng Gong
- Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
- Department of Andrology, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Wenjing Dong
- Department of Oncology, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Tingyu He
- Department of Reproductive Center, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Zhirong Shi
- Department of Pharmacy, The Second People’s Hospital of Zhuhai, Zhuhai, Guangdong, 519020, China
| | - Guiying Huang
- The Second General Department, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Rui Ren
- Department of Andrology, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Sichong Huang
- Department of Andrology, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
| | - Shaopeng Qiu
- Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
- * E-mail: (SPQ); (RQY)
| | - Runqiang Yuan
- Department of Andrology, Zhongshan Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangdong, 528403, China
- * E-mail: (SPQ); (RQY)
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Ni W, Li H, Wu A, Zhang P, Yang H, Yang X, Huang X, Jiang L. Lack of association between genetic polymorphisms in three folate-related enzyme genes and male infertility in the Chinese population. J Assist Reprod Genet 2015; 32:369-74. [PMID: 25578539 DOI: 10.1007/s10815-014-0423-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 12/26/2014] [Indexed: 12/15/2022] Open
Abstract
PURPOSE This study explored the possible association of four single nucleotide polymorphisms (SNPs) of the three folate-related enzyme genes: MTHFR C677T and A1298C, MTR A2756G and MTRR A66G, with male infertility in the Chinese population. METHODS The polymorphic distributions of the four SNPs (MTHFR C677T and A1298C, MTR A2756G and MTRR A66G) were investigated by the method of SNaPshot in a Chinese cohort including 296 idiopathic infertile males with azoospermia or oligozoospermia and 204 fertile males. RESULTS We found no evidence for an association between any of these variants (MTHFR C677T and A1298C, MTR A2756G and MTRR A66G) and male infertility. CONCLUSIONS There is no evidence for an association between male infertility and polymorphism of the three folate-related enzyme genes in the Chinese population.
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Gurkan H, Tozkır H, Göncü E, Ulusal S, Yazar M. The relationship between methylenetetrahydrofolate reductase c.677TT genotype and oligozoospermia in infertile male patients living in the Trakya region of Turkey. Andrologia 2014; 47:1068-74. [DOI: 10.1111/and.12380] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2014] [Indexed: 11/26/2022] Open
Affiliation(s)
- H. Gurkan
- Department of Medical Genetics; Medical Faculty; Trakya University; Edirne Turkey
| | - H. Tozkır
- Department of Medical Genetics; Medical Faculty; Trakya University; Edirne Turkey
| | - E. Göncü
- Department of Medical Genetics; Medical Faculty; Trakya University; Edirne Turkey
| | - S. Ulusal
- Department of Medical Genetics; Medical Faculty; Trakya University; Edirne Turkey
| | - M. Yazar
- Department of Medical Genetics; Medical Faculty; Trakya University; Edirne Turkey
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