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Rotondo JC, Lanzillotti C, Mazziotta C, Tognon M, Martini F. Epigenetics of Male Infertility: The Role of DNA Methylation. Front Cell Dev Biol 2021; 9:689624. [PMID: 34368137 PMCID: PMC8339558 DOI: 10.3389/fcell.2021.689624] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/17/2021] [Indexed: 12/18/2022] Open
Abstract
In recent years, a number of studies focused on the role of epigenetics, including DNA methylation, in spermatogenesis and male infertility. We aimed to provide an overview of the knowledge concerning the gene and genome methylation and its regulation during spermatogenesis, specifically in the context of male infertility etiopathogenesis. Overall, the findings support the hypothesis that sperm DNA methylation is associated with sperm alterations and infertility. Several genes have been found to be differentially methylated in relation to impaired spermatogenesis and/or reproductive dysfunction. Particularly, DNA methylation defects of MEST and H19 within imprinted genes and MTHFR within non-imprinted genes have been repeatedly linked with male infertility. A deep knowledge of sperm DNA methylation status in association with reduced reproductive potential could improve the development of novel diagnostic tools for this disease. Further studies are needed to better elucidate the mechanisms affecting methylation in sperm and their impact on male infertility.
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Affiliation(s)
- John Charles Rotondo
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Carmen Lanzillotti
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Chiara Mazziotta
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Mauro Tognon
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Fernanda Martini
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
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Ménézo Y, Patrizio P, Alvarez S, Amar E, Brack M, Brami C, Chouteau J, Clement A, Clement P, Cohen M, Cornet D, Dale B, D' Amato G, Jacquesson-Fournols L, Mares P, Neveux P, Sage JC, Servy E, Huong TM, Viot G. MTHFR (methylenetetrahydrofolate reductase: EC 1.5.1.20) SNPs (single-nucleotide polymorphisms) and homocysteine in patients referred for investigation of fertility. J Assist Reprod Genet 2021; 38:2383-2389. [PMID: 33914208 PMCID: PMC8490548 DOI: 10.1007/s10815-021-02200-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/18/2021] [Indexed: 11/26/2022] Open
Abstract
Purpose MTHFR, one of the major enzymes in the folate cycle, is known to acquire single-nucleotide polymorphisms that significantly reduce its activity, resulting in an increase in circulating homocysteine. Methylation processes are of crucial importance in gametogenesis, involved in the regulation of imprinting and epigenetic tags on DNA and histones. We have retrospectively assessed the prevalence of MTHFR SNPs in a population consulting for infertility according to gender and studied the impact of the mutations on circulating homocysteine levels. Methods More than 2900 patients having suffered at least two miscarriages (2 to 9) or two failed IVF/ICSI (2 to 10) attempts were included for analysis of MTHFR SNPs C677T and A1298C. Serum homocysteine levels were measured simultaneously. Results We observed no difference in the prevalence of different genetic backgrounds between men and women; only 15% of the patients were found to be wild type. More than 40% of the patients are either homozygous for one SNP or compound heterozygous carriers. As expected, the C677T SNP shows the greatest adverse effect on homocysteine accumulation. The impact of MTHFR SNPs on circulating homocysteine is different in men than in women. Conclusions Determination of MTHFR SNPs in both men and women must be seriously advocated in the presence of long-standing infertility; male gametes, from MTHFR SNPs carriers, are not exempted from exerting a hazardous impact on fertility. Patients should be informed of the pleiotropic medical implications of these SNPs for their own health, as well as for the health of future children.
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Affiliation(s)
- Yves Ménézo
- Laboratoire Clement, Avenue d Eylau, 75016, Paris, France.
- London Fertility Associates, Harley St, London, UK.
| | | | | | - Edouard Amar
- Hopital Américain de Paris, Neuilly-sur-Seine, France
| | | | - Charles Brami
- Hopital Américain de Paris, Neuilly-sur-Seine, France
| | | | - Arthur Clement
- Laboratoire Clement, Avenue d Eylau, 75016, Paris, France
| | | | | | | | - Brian Dale
- London Fertility Associates, Harley St, London, UK
- Centro Fecondazione Assistita, Napoli, Italy
| | | | | | | | | | | | | | - To Minh Huong
- VINMEC International Hospital, 458 Minh Khai, Hanoi, Vietnam
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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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Zhao X, Zhao Y, Ping Y, Chen L, Feng X. Association between gene polymorphism of folate metabolism and recurrent spontaneous abortion in Asia: A Meta-analysis. Medicine (Baltimore) 2020; 99:e21962. [PMID: 33019388 PMCID: PMC7535684 DOI: 10.1097/md.0000000000021962] [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] [Indexed: 12/04/2022] Open
Abstract
To evaluate the association between gene polymorphisms of MTHFR (C677T, A1298C) and MTRR (A66G), and the recurrent spontaneous abortion (RSA) risk in Asia.Related case-control studies were collected, selected, and screened. A meta-analysis was conducted by Stata 12.0 software to assess the association between polymorphisms of target genes and RSA.Altogether 30 studies examining the relationship between genetic polymorphism of folate metabolism and RSA risk were included, among which 20 studies were related to MTHFR C677T, 11 to MTHFR A1298C and 6 to MTRR A66G. The studies suggested that MTHFR C677T polymorphism was closely connected with RSA risk under all models (P < .05). Furthermore according to the subgroup analysis of ethnicity, the correlation between C677T polymorphism and RSA was stronger in north of China when compared with south of China and other Asian countries (P > . 05). For MTHFR A1298C, it was closely related to RSA risk in all gene models except for (AC vs AA) (P < .05). However, when it comes to MTRR A66G, there was no significant correlation between gene A66G polymorphism and RSA risk except for the additive gene model (G vs A) (P < .05).The present evidence shows that the correlation between gene polymorphisms and RSA risk can be found in MTHFR C677T, A1298C (except for heterozygote model) and MTRR A66G (only in additive genotypes), and the detection of the correlated gene polymorphisms mentioned above is of certain guiding significance for preventing RSA and screening high-risk groups.
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Affiliation(s)
- Xiaoxuan Zhao
- Department of Heilongjiang University of Chinese Medicine, Harbin
| | - Yang Zhao
- Hebei College of Traditional Chinese Medicine, Shijiazhuang
| | - Yunlu Ping
- Department of Heilongjiang University of Chinese Medicine, Harbin
| | - Lu Chen
- Department of First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiaoling Feng
- Department of First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
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Aliakbari F, Pouresmaeili F, Eshghifar N, Zolghadr Z, Azizi F. Association of the MTHFR 677C>T and 1298A>C polymorphisms and male infertility risk: a meta-analysis. Reprod Biol Endocrinol 2020; 18:93. [PMID: 32912251 PMCID: PMC7488080 DOI: 10.1186/s12958-020-00649-1] [Citation(s) in RCA: 3] [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] [Received: 06/15/2020] [Accepted: 08/31/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND OBJECTIVES One of the possible male sterility risk factors are polymorphisms of Methylenetetrahydrofolate reductase (MTHFR). However, the epidemiologic investigations described inconsistent results regarding MTHFR polymorphism and the risk of male infertility. For that reason, we carried out a meta-analysis of published case-control studies to re-examine the controversy. METHODS Electronic searches of Cochrane, EMBASE, Google Scholar, and PubMed were conducted to select eligible studies for this meta-analysis (updated to May 2019). According to our exclusion and inclusion criteria, only high-quality studies that remarked the association between MTHFR polymorphisms and male infertility risk were included. The Crude odds ratio (OR) with a confidence interval of 95% (CI) was used to assess the relationship between MTHFR polymorphism and male infertility risk. RESULTS Thirty-four case-control studies with 9662 cases and 9154 controls concerning 677C/T polymorphism and 22 case-control studies with 5893 cases and 6303 controls concerning 1298A/C polymorphism were recruited. Both MTHFR polymorphisms had significant associations with male infertility risk (CT + TT vs. CC: OR = 1.37, 95% CI: 1.21-1.55, P = 0.00, I2 = 41.9%); (CC vs. CA + AA: OR = 0.82, 95% CI: 0.52-1.30, P = 0.04, I2 = 50.1%). Further, when stratified by ethnicity, the significant association results were observed in Asians and Caucasians for 677C/T and just Asians for 1298A/C. CONCLUSIONS Some of MTHFR polymorphisms like MTHFR 677C > T are associated with an elevated male infertility risk. To confirm our conclusion and to provide more accurate and complete gene-environment communication with male infertility risk, more analytical studies are needed.
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Affiliation(s)
- Fereshteh Aliakbari
- grid.411600.2Men’s Health & Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farkhondeh Pouresmaeili
- grid.411600.2Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nahal Eshghifar
- grid.411600.2Men’s Health & Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- grid.411463.50000 0001 0706 2472Department of Molecular and Cellular Biology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Zahra Zolghadr
- grid.411600.2Department of Biostatistics, school of allied medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Faezeh Azizi
- grid.415814.d0000 0004 0612 272XGenetics Office, Non-Communicable Disease Control Department, Public Health Department, Ministry of Health and Medical Education, Tehran, Iran
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Nasri K, Midani F, Kallel A, Ben Jemaa N, Aloui M, Boulares M, Lassoued M, Ben Halima M, Ben Wafi S, Soussi M, Mahjoubi I, Baara A, Ben Fradj MK, Omar S, Feki M, Jemaa R, Gaigi SS, Marrakchi R. Association of MTHFR C677T, MTHFR A1298C, and MTRR A66G Polymorphisms with Neural Tube Defects in Tunisian Parents. Pathobiology 2019; 86:190-200. [PMID: 31238314 DOI: 10.1159/000499498] [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: 08/03/2018] [Accepted: 03/11/2019] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE This study aims to investigate the association of 5,10-methylenetetrahydrofolate reductase (MTHFR C677T and A1298C) and methionine synthase reductase (MTRR A66G) gene polymorphisms with neural tube defects (NTDs) in a Tunisian population. METHODS Genotyping was performed by polymerase chain reaction with restriction fragment length polymorphisms (PCR-RFLPs) using the restriction enzymes. Allele and genotype frequencies were compared between mothers and fathers of fetuses with NTDs with matched controls based on an association analysis using SPSS software. RESULTS MTHFR (C677T, A1298C) and MTRR A66G polymorphisms were found to be protector factors for NTD fetuses in the mother group. In addition, a combination of the three wild-type alleles C677/A1298/A66 has increased four-fold the incidence of NTDs (p = 0.004, OR = 3.96, 95% CI: 1.53-10.23). In the father group, MTHFR C677T was a risk factor for NTDs. However, no association was found between MTHFR A1298C, MTRR A66G, and the occurrence of this anomaly. The analysis of MTHFR C677T and MTRR A66G polymorphisms has demonstrated a significant difference in vitamin B12 levels between recessive and dominant genotypes in case mothers (p < 0.05). CONCLUSION Additional studies are required to better understand the roles of parental gene polymorphisms related to folate-homocysteine metabolism in the pathogenesis of NTD.
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Affiliation(s)
- Kaouther Nasri
- Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia, .,UR 06/ SP14 Troubles du développement embryo-fœtal et placentaire, Service d'embryo-fœtopathologie, Centre de Maternité et de Néonatologie La Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia,
| | - Fatma Midani
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Amani Kallel
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Nadia Ben Jemaa
- UR 06/ SP14 Troubles du développement embryo-fœtal et placentaire, Service d'embryo-fœtopathologie, Centre de Maternité et de Néonatologie La Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Mariem Aloui
- Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia.,UR 06/ SP14 Troubles du développement embryo-fœtal et placentaire, Service d'embryo-fœtopathologie, Centre de Maternité et de Néonatologie La Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Miryam Boulares
- Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia.,CERTE -Technopole de Borj-Cedria Laboratoire de Traitement et Valorisation des Rejets Hydriques, Soliman, Tunisia
| | - Mehdi Lassoued
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Meriam Ben Halima
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Safa Ben Wafi
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Mariem Soussi
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Imen Mahjoubi
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Abir Baara
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Mohamed Kacem Ben Fradj
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Souhail Omar
- Laboratoire de Biologie clinique, Institut National Mongi Ben Hmida de Neurologie, Rue Jebbari La Rabta, Tunis, Tunisia
| | - Moncef Feki
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Riadh Jemaa
- UR 05/08-08, Département de biochimie, Hôpital la Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Soumeya Siala Gaigi
- UR 06/ SP14 Troubles du développement embryo-fœtal et placentaire, Service d'embryo-fœtopathologie, Centre de Maternité et de Néonatologie La Rabta et de la Faculté de Médecine de Tunis, Université El Manar II, Tunis, Tunisia
| | - Raja Marrakchi
- Laboratoire de génétique, immunologie et pathologie humaine, faculté des sciences de Tunis, Université El Manar II, Tunis, Tunisia
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Graydon JS, Claudio K, Baker S, Kocherla M, Ferreira M, Roche-Lima A, Rodríguez-Maldonado J, Duconge J, Ruaño G. Ethnogeographic prevalence and implications of the 677C>T and 1298A>C MTHFR polymorphisms in US primary care populations. Biomark Med 2019; 13:649-661. [PMID: 31157538 PMCID: PMC6630484 DOI: 10.2217/bmm-2018-0392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/25/2019] [Indexed: 02/04/2023] Open
Abstract
Aim: Variants of the MTHFR gene have been associated with a wide range of diseases. Materials & methods: The present study analyzed data from clinical genotyping of MTHFR 677C>T and 1298A>C in 1405 patients in urban primary care settings. Results: Striking differences in ethnogeographic frequencies of MTHFR polymorphisms were observed. African-Americans appear to be protected from MTHFR deficiency. Hispanics and Caucasians may be at elevated risk due to increased frequencies of 677C>T and 1298A>C, respectively. Conclusion: Individuals carrying mutations for both genes were rare and doubly homozygous mutants were absent, suggesting the TTcc is extremely rare in the greater population. The results suggest multilocus MTHFR genotyping may yield deeper insight into the ethnogeographic association between MTHFR variants and disease.
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Affiliation(s)
- James S Graydon
- Laboratory of Personalized Health, Genomas, Inc., Hartford, CT 06102, USA
| | - Karla Claudio
- Pharmaceutical Sciences department, University of Puerto Rico School of Pharmacy, San Juan, PR 00936, USA
| | - Seth Baker
- Clinical Laboratory Partners, Hartford Healthcare, Hartford, CT 06102, USA
| | - Mohan Kocherla
- Laboratory of Personalized Health, Genomas, Inc., Hartford, CT 06102, USA
| | - Mark Ferreira
- Laboratory of Personalized Health, Genomas, Inc., Hartford, CT 06102, USA
| | - Abiel Roche-Lima
- Center for Collaborative Research in Health Disparities, University of Puerto Rico School of Medicine, San Juan, PR 00936, USA
| | - Jovaniel Rodríguez-Maldonado
- Center for Collaborative Research in Health Disparities, University of Puerto Rico School of Medicine, San Juan, PR 00936, USA
| | - Jorge Duconge
- Pharmaceutical Sciences department, University of Puerto Rico School of Pharmacy, San Juan, PR 00936, USA
| | - Gualberto Ruaño
- Laboratory of Personalized Health, Genomas, Inc., Hartford, CT 06102, USA
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Mo H, Rao M, Wang G, Long YX, Wang HW, Tang L. Polymorphism of MTHFR 1298A>C in relation to adverse pregnancy outcomes in Chinese populations. Mol Genet Genomic Med 2019; 7:e642. [PMID: 30900398 PMCID: PMC6503069 DOI: 10.1002/mgg3.642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 01/19/2019] [Accepted: 02/11/2019] [Indexed: 11/24/2022] Open
Abstract
Background Adverse pregnancy outcomes (APOs) are involved in a series of abnormal pregnancies like embryo growth arrest, spontaneous abortion, premature birth, stillbirth, fetal malformation, birth defects and other pathological pregnancy, and childbirth complications. Polymorphism of methylenetetrahydrofolate reductase gene (MTHFR, 607093) is one of the main genetic causes of APO. However, there is still debate on whether MTHFR 1298A>C, rs1801131, polymorphism is related to APO. For the lack of extensive research in the Chinese population at present, the study aim to investigate the relationship between MTHFR 1298A>C polymorphism with APO through a large number of data. Methods A total of 241 samples from patients with APO and 117 healthy controls in Yunnan province were used for MTHFR gene polymorphism analysis, with double fluorescence quantitative polymerase chain reaction (PCR). In consideration of the low frequency of MTHFR 1298C/C genotype, which might affect the statistic results, further datasets of MTHFR 1298A>C polymorphism were collected from literature and analyzed. Results No statistical difference was detected in the frequency of MTHFR1298A>C polymorphism between two groups in Yunnan. Our data showed that the frequency of MTHFR 1298A/A genotype had the decreasing tendency among Chinese population from northern to southern, as well as eastern to western of China. The frequency of MTHFR 1298A/C and 1298C/C genotypes had the adverse tendency. The frequency of MTHFR 1298C/C genotype was significantly different between two groups in Chinese populations. The significant difference was also observed in the frequency of MTHFR 1298C/C polymorphism between two groups from central China and southern China. Conclusion In summary, our data showed that MTHFR 1298C/C genotype was one of the important genetic factors of APO in China.
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Affiliation(s)
- Hui Mo
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, China
| | - Meng Rao
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, China
| | - Gang Wang
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, China
| | - Yan-Xi Long
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, China
| | - Hua-Wei Wang
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, China
| | - Li Tang
- Department of Reproduction and Genetics, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan, 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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Association between MTHFR A1298C polymorphism and male infertility: A meta-analysis. ACTA ACUST UNITED AC 2017; 37:153-160. [DOI: 10.1007/s11596-017-1709-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 10/28/2016] [Indexed: 12/30/2022]
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11
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Karimian M, Colagar AH. Association of C677T transition of the human methylenetetrahydrofolate reductase (MTHFR) gene with male infertility. Reprod Fertil Dev 2017; 28:785-94. [PMID: 25412139 DOI: 10.1071/rd14186] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 09/24/2014] [Indexed: 01/10/2023] Open
Abstract
The human methylenetetrahydrofolate reductase (MTHFR) gene encodes one of the key enzymes in folate metabolism. This gene is located on chromosome 1 (1p36.3), which has 12 exons. The aim of the present study was to investigate the possible association of the two (C677T and A1298C) polymorphisms of this gene with male infertility. In a case-control study, 250 blood samples were collected from IVF centres in Sari and Babol (Iran): 118 samples were from oligospermic men and 132 were from controls. Two single nucleotide polymorphisms of the MTHFR genotype were detected using polymerase chain reaction-restriction fragment length polymorphism. There was no association found between the A1298C variant and male infertility. However, carriers of the 677T allele (CT and TT genotypes) were at a higher risk of infertility than individuals with other genotypes (odds ratio 1.84; 95% confidence interval 1.11-3.04; P=0.0174). Structural analysis of human MTHFR flavoprotein showed that C677T transition played an important role in the change in affinity of the MTHFR-Flavin adenine dinucleotide binding site. Based on our results, we suggest that C677T transition in MTHFR may increase the risk of male infertility, and detection of the C677T polymorphism biomarker may be helpful in the screening of idiopathic male infertility.
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Affiliation(s)
- Mohammad Karimian
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar 47416-95447, Iran
| | - Abasalt Hosseinzadeh Colagar
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar 47416-95447, Iran
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12
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Irfan M, Ismail M, Azhar Beg M, Shabbir A, Rashid Kayani A, Kaukab Raja G. Association of the MTHFR C677T (rs1801133) polymorphism with idiopathic male infertility in a local Pakistani population. Balkan J Med Genet 2016; 19:51-62. [PMID: 27785408 PMCID: PMC5026280 DOI: 10.1515/bjmg-2016-0007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The present study determined an association between idiopathic sperm disorders in a local Pakistani infertile male population and the MTHFR C677T polymorphism. After ruling out non genetic factors, a total of 437 idiopathic infertile men including 57 azoospermic, 66 oligospermic, 44 asthenozoospermic, 29 teratozoospermic, 20 oligoasthenospermic and 221 infertile normospermic men were recruited. Furthermore, 218 normospermic fertile men, who had two children (or more) were included as controls. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used to determine MTHFR C677T (rs1801133) polymorphism. A significant association of the minor MTHFR 677T allele with male infertility was observed (p <0.05). In addition, men with MTHFR 677 CT and TT genotypes were at a greater risk [odds ratio (OR): 1.81, 95% confidence interval (95% CI): 1.17-2.80, p = 0.008 and OR: 9.24, 95% CI: 1.20-70.92, p = 0.032, respectively] of infertility. All the subgroups of male infertility (azoospermic, oligospermic, asthenospermic, oligoasthenoteratospermic (OAT) and normospermic infertile) had significantly (p <0.05) higher frequencies of CT and TT genotypes when compared to fertile men. The combined genotypes (CT + TT) were also found significantly (OR: 2.01, 95% CI: 1.31-3.08, p <0.001) associated with male infertility. The results suggest that the polymorphism might be a factor of male infertility in the Pakistani population.
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Affiliation(s)
- M Irfan
- Department of Zoology, Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan
| | - M Ismail
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan
| | - M Azhar Beg
- Department of Zoology, Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan
| | - A Shabbir
- Biosciences, Commission on Science and Technology for Sustainable Development in the South (COMSAT), Institute of Information Technology, Islamabad, Pakistan
| | - A Rashid Kayani
- Department of Zoology, Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan
| | - G Kaukab Raja
- Department of Biochemistry, Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan
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13
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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14
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Role of genetic mutations in folate-related enzyme genes on Male Infertility. Sci Rep 2015; 5:15548. [PMID: 26549413 PMCID: PMC4637885 DOI: 10.1038/srep15548] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [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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15
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Visentin CE, Masih S, Plumptre L, Malysheva O, Nielsen DE, Sohn KJ, Ly A, Lausman AY, Berger H, Croxford R, El-Sohemy A, Caudill MA, O'Connor DL, Kim YI. Maternal Choline Status, but Not Fetal Genotype, Influences Cord Plasma Choline Metabolite Concentrations. J Nutr 2015; 145:1491-7. [PMID: 25972528 DOI: 10.3945/jn.115.211136] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/16/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Choline deficiency during pregnancy can lead to adverse birth outcomes, including impaired neurodevelopment and birth defects. Genetic variants of choline and one-carbon metabolism may also influence birth outcomes by altering plasma choline concentrations. The effects of maternal ad libitum choline intake during pregnancy and fetal genetic variants on maternal and cord concentrations of choline and its metabolites are unknown. OBJECTIVES This prospective study sought to assess the effect of 1) maternal dietary choline intake on maternal and cord plasma concentrations of choline and its metabolites, and 2) fetal genetic polymorphisms on cord plasma concentrations. METHODS The dietary choline intake of 368 pregnant Canadian women was assessed in early (0-16 wk) and late (23-37 wk) pregnancy with the use of a food frequency questionnaire. Plasma concentrations of free choline and its metabolites were measured in maternal samples at recruitment and delivery, and in the cord blood. Ten fetal genetic variants in choline and one-carbon metabolism were assessed for their association with cord plasma concentrations of free choline and its metabolites. RESULTS Mean maternal plasma free choline, dimethylglycine, and trimethylamine N-oxide (TMAO) concentrations increased during pregnancy by 49%, 17%, and 13%, respectively (P < 0.005), whereas betaine concentrations decreased by 21% (P < 0.005). Cord plasma concentrations of free choline, betaine, dimethylglycine, and TMAO were 3.2, 2.0, 1.3, and 0.88 times corresponding maternal concentrations at delivery, respectively (all P < 0.005). Maternal plasma concentrations of betaine, dimethylglycine, and TMAO (r(2) = 0.19-0.51; P < 0.0001) at delivery were moderately strong, whereas maternal concentrations of free choline were not significant (r(2) = 0.12; P = 0.06), predictors of cord plasma concentrations of these metabolites. Neither maternal dietary intake nor fetal genetic variants predicted maternal or cord plasma concentrations of choline and its metabolites. CONCLUSION These data collectively indicate that maternal choline status, but not fetal genotype, influences cord plasma concentrations of choline metabolites. This trial was registered at clinicaltrials.gov as NCT02244684.
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Affiliation(s)
- Carly E Visentin
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Shannon Masih
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Lesley Plumptre
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Olga Malysheva
- Division of Nutritional Sciences, College of Human Ecology, Cornell University, Ithaca, NY; and
| | - Daiva E Nielsen
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Kyoung-Jin Sohn
- Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Anna Ly
- Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Andrea Y Lausman
- Obstetrics and Gynecology, St. Michael's Hospital and University of Toronto, Toronto, Canada
| | - Howard Berger
- Obstetrics and Gynecology, St. Michael's Hospital and University of Toronto, Toronto, Canada
| | | | - Ahmed El-Sohemy
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Marie A Caudill
- Division of Nutritional Sciences, College of Human Ecology, Cornell University, Ithaca, NY; and
| | - Deborah L O'Connor
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Research Institute, the Hospital for Sick Children, Toronto, Canada
| | - Young-In Kim
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada;
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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] [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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Tara SS, Ghaemimanesh F, Zarei S, Reihani-Sabet F, Pahlevanzadeh Z, Modarresi MH, Jeddi-Tehrani M. Methylenetetrahydrofolate Reductase C677T and A1298C Polymorphisms in Male Partners of Recurrent Miscarriage Couples. J Reprod Infertil 2015; 16:193-8. [PMID: 27110516 PMCID: PMC4819207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Methylenetetrahydrofolate reductase (MTHFR) single-nucleotide polymorphisms (SNPs) C677T and A1298C have been described as strong risk factors for idiopathic recurrent miscarriage (RM). However, very few studies have investigated the association of paternal MTHFR SNPs with RM. The aim of the present study was to evaluate the prevalence of paternal C677T and A1298C SNPs among Iranian RM couples. METHODS The study subjects comprised 225 couples with more than three consecutive pregnancy losses, and 100 control couples with no history of pregnancy complications. All females in the case group had MTHFR polymorphisms; and genotype SNPs were analyzed by PCR-RFLP. Groups were statistically compared using Mann Whitney U-test and Chi-square statistical tests. The p<0.05 were considered significant. RESULTS Statistically significant difference was detected in the frequency of MTHFR SNPs in male partners of the two groups (p=0.019). Combined heterozygosity of MTHFR polymorphisms was a common phenomenon in the males; 52 (23.1%) and 14 (14%) of males in RM and control groups, respectively. Absence of combined homozygosity for both SNPs in all studied groups/genders was observed. CONCLUSION The MTHFR gene composition of male partners of RM couples may contribute to increased risk of miscarriage.
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Affiliation(s)
- Somayeh-Sadat Tara
- Department of Genetics, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Ghaemimanesh
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Saeed Zarei
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | | | | | | | - Mahmood Jeddi-Tehrani
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran,Corresponding Author: Mahmood Jeddi-Tehrani, Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, P.O. Box: 19615-1177, Tehran, Iran, E-mail:;
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