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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] [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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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] [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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Suthar PC, Purkait P, Uttaravalli K, Sarkar BN, Ameta R, Sikdar M. Glutathione S-transferase M1 and T1 null genotype frequency distribution among four tribal populations of western India. J Genet 2018. [DOI: 10.1007/s12041-018-0888-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Grubisa I, Otasevic P, Vucinic N, Milicic B, Jozic T, Krstic S, Milasin J. Combined GSTM1 and GSTT1 null genotypes are strong risk factors for atherogenesis in a Serbian population. Genet Mol Biol 2018; 41:35-40. [PMID: 29658969 PMCID: PMC5901493 DOI: 10.1590/1678-4685-gmb-2017-0034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 10/23/2017] [Indexed: 11/22/2022] Open
Abstract
Oxidative stress (OS) plays an important role in atherogenesis and since glutathione S-transferases (GSTs) provide protection against OS, we have tested the hypothesis that deletion polymorphisms in two GSTs (GSTM1 and GSTT1) may affect the risk of developing atherosclerosis. A total of 382 individuals (200 patients with atherosclerosis and 182 healthy controls) were included in this association study. Genomic DNA was isolated from peripheral blood cells or from buccal epithelial cells and genotyping was performed using multiplex-PCR or real-time PCR methods. GSTM1 null genotype was significantly more frequent in atherosclerotic patients than in controls (52.0% vs 34.1%) and individuals with the GSTM1 null genotype had an approximately 2-fold increase in atherosclerosis risk (OR: 2.1, 95%CI=1.39-3.17, P=0.0004). GSTT1 null genotype alone did not show a statistically significant effect on atherosclerosis risk modulation, but the association approached significance (OR: 1.57, 95%CI=0.94-2.64, P=0.08). The combined analysis showed that the presence of both genes had a protective effect against atherosclerosis (OR=0.55, 95%CI=0.37-0.83, P=0.005) while double null genotypes led to a robust atherosclerosis risk increase (OR: 8.14, 95%CI= 2.41-27.51, P < 0.0001). This study demonstrated that the GSTM1 null and combined GSTM1/GSTT1 null genotypes are susceptibility factors for development of atherosclerosis in a Serbian population.
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Affiliation(s)
- Ivana Grubisa
- Department of Human Genetics and Prenatal Diagnostics, Zvezdara, University Medical Center, University of Belgrade, Belgrade, Serbia
| | - Petar Otasevic
- Dedinje Cardiovascular Institute Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nada Vucinic
- Department of Human Genetics and Prenatal Diagnostics, Zvezdara, University Medical Center, University of Belgrade, Belgrade, Serbia
| | - Biljana Milicic
- Department of Statistics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Tanja Jozic
- Clinic of Cardiology, Clinical Center of Serbia, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Slobodan Krstic
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Milasin
- Department of Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
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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] [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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Ying HQ, Qi Y, Pu XY, Liu SR, A ZC. Association of GSTM1 and GSTT1 genes with the susceptibility to male infertility: result from a meta-analysis. Genet Test Mol Biomarkers 2013; 17:535-42. [PMID: 23631429 DOI: 10.1089/gtmb.2012.0409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The deletion polymorphisms of the glutathione S-transferase M1 (GSTM1) and glutathione S-transferase T1 (GSTT1) genes were considered as candidates for genetic susceptibility factors of male infertility. Previous studies concerning the relationship between the null genotype of the two genes and male infertility have been reported in recent years. However, the results remain elusive. A meta-analysis was performed to estimate the relationship between the deletion polymorphism of the GSTM1 or GSTT1 gene, and male infertility in this study. Sixteen studies concerning the GSTM1 gene, including 2174 cases and 1861 controls, and 13 case-control studies on the GSTT1 gene with a total number of 1992 cases and 1617 controls were processed. The results showed that the null genotype of the GSTM1 gene was associated with male infertility in the overall populations (P=0.003, OR=1.40, 95%CI=1.12-1.75), especially in Caucasian (P=0.012, OR=1.50, 95%CI=1.09-2.07) as well as Chinese (P=0.001, OR=1.55, 95%CI=1.19-2.03). The null genotype of the GSTT1 gene was strongly related to male infertility only in Chinese (P=0.000, OR=1.70, 95%CI=1.34-2.14). These results indicated that the null genotype of the GSTM1 gene might contribute to the susceptibility of male infertility, whereas the null genotype of the GSTT1 gene may be a genetic susceptibility factor of male infertility for the Chinese.
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Affiliation(s)
- Hou-Qun Ying
- Department of Genetics, College of Agriculture and Biology, Dali University, China
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Kan HP, Wu FL, Guo WB, Wang YZ, Li JP, Huang YQ, Li SG, Liu JP. Null genotypes of GSTM1 and GSTT1 contribute to male factor infertility risk: a meta-analysis. Fertil Steril 2013; 99:690-6. [DOI: 10.1016/j.fertnstert.2012.10.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 10/18/2012] [Accepted: 10/21/2012] [Indexed: 10/27/2022]
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Tang M, Wang S, Wang W, Cao Q, Qin C, Liu B, Li P, Zhang W. The glutathione-S-transferase gene polymorphisms (GSTM1 and GSTT1) and idiopathic male infertility risk: a meta-analysis. Gene 2012; 511:218-23. [PMID: 23026209 DOI: 10.1016/j.gene.2012.09.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 09/14/2012] [Accepted: 09/20/2012] [Indexed: 11/19/2022]
Abstract
Published data on the association between male infertility and the glutathione-S-transferase (GST) gene polymorphism are inclusive. To drive a more precise estimation, we performed a meta-analysis based on 1897 cases and 1785 controls from 15 published case-control studies. PubMed and CBMdisc literature research were conducted to identify all eligible studies investigating such a relationship. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to estimate the strength of the association. In the overall analysis, the frequency of glutathione-S-transferase Mu-1 (GSTM1) null genotype was significantly associated with susceptibility to idiopathic male infertility. In further stratified analysis by sperm concentration of the case group, no significantly increased risk of azoospermia was found in either GSTM1 null or glutathione-S-transferase Theta-1 (GSTT1) null genotype. Compared with a significant relationship between GSTM1 null genotype and oligoasthenoteratozoospermia (OAT), GSTT1 null genotype was not associated with the OAT risk. Additionally, a subgroup analysis on ethnicity showed no notable association between the polymorphism and the risk of idiopathic male infertility in any of GSTM1 null and GSTT1 null genotype, neither in Asian nor in European populations. In conclusion, these results support that the GSTM1 null genotype mainly contributes to idiopathic male infertility susceptibility, particularly to OAT.
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Affiliation(s)
- Min Tang
- State Key Laboratory of Reproductive Medicine, Department of Urology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
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Jaiswal D, Sah R, Agrawal NK, Dwivedi US, Trivedi S, Singh K. Combined Effect of GSTT1 and GSTM1 Polymorphisms on Human Male Infertility in North Indian Population. Reprod Sci 2012; 19:312-6. [DOI: 10.1177/1933719111424451] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Deepika Jaiswal
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ravindra Sah
- Sah Speciality Clinic, Ravindrapuri Colony, Durgakund, Varanasi, Uttar Pradesh, India
| | - Neeraj K. Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - U. S. Dwivedi
- Department of Urology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Sameer Trivedi
- Department of Urology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Kiran Singh
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Jakovljevic K, Malisic E, Cavic M, Radulovic S, Jankovic R. Association between methylenetetrahydrofolate reductase polymorphism C677T and risk of chronic myeloid leukemia in Serbian population. Leuk Lymphoma 2012; 53:1327-30. [DOI: 10.3109/10428194.2011.645210] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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