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Li Z, Li J, Li Y, Guo L, Xu P, Du H, Lin N, Xu Y. The role of Cistanches Herba and its ingredients in improving reproductive outcomes: A comprehensive review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155681. [PMID: 38718638 DOI: 10.1016/j.phymed.2024.155681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/11/2024] [Accepted: 04/23/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Infertility patients account for an astonishing proportion of individuals worldwide. Due to its complex etiology and challenging treatment, infertility has imposed significant psychological and economic burdens on many patients. C. Herba (Cistanche tubulosa (Schenk) Wight and Cistanche deserticola Ma), renowned as one of the most prominent Chinese herbal medicines (CHMs), is abundant in diverse bioactive compounds that exhibit therapeutic effects on many diseases related to oxidative stress (OS) and disorders of sex hormone levels. OBJECTIVE Due to the limited drugs currently used in clinical practice to improve reproductive outcomes and their inevitable side effects, developing safe and effective new medications for infertility is of significance. This article comprehensively reviewed the phytochemicals of C. Herba, focusing on their efficacy and mechanisms on infertility and their safety for the first time, aiming to offer valuable insights for the development and application of C. Herba, and for developing novel strategies for treating infertility. METHODS We used "Cistanche" and its known bioactive components in combination with "sperm", "testicles", "epididymis", "ovaries", "uterus", and "infertility" as keywords to search in PubMed, Web of Science, Scopus and CNKI up to November 2023. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guideline was followed. RESULTS The therapeutic effects of C. Herba on infertility are mainly attributed to echinacoside (ECH), verbascoside (VB), salidroside (SAL), polysaccharides, and betaine. They can effectively improve spermatogenic dysfunction, gonadal dysfunction and erectile dysfunction (ED) by exerting anti-oxidation, sex hormones regulation and anti-hypoxia. Moreover, they can also improve premature ovarian failure (POF), ovarian and uterine cancer, oocyte maturation by exerting anti-oxidation, anti-apoptosis, and anti-cancer. C. Herba and its active ingredients also exhibit pleasing safety. CONCLUSION C. Herba is a promising source of natural medicine for infertility. Additionally, compared to current therapeutic drugs, its favorable safety also supports its development as a nutritional supplement. However, high-quality clinical studies are required to validate its effectiveness for the development of novel therapeutic strategies.
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Affiliation(s)
- Zehui Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jiashan Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yuan Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Li Guo
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Panyu Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hanqian Du
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Na Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Ying Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Martínez Duncker Rebolledo E, Chan D, Christensen KE, Reagan AM, Howell GR, Rozen R, Trasler J. Sperm DNA methylation defects in a new mouse model of the 5,10-methylenetetrahydrofolate reductase 677C>T variant and correction with moderate dose folic acid supplementation. Mol Hum Reprod 2024; 30:gaae008. [PMID: 38366926 PMCID: PMC10980591 DOI: 10.1093/molehr/gaae008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 01/30/2024] [Indexed: 02/19/2024] Open
Abstract
5,10-Methylenetetrahydrofolate reductase (MTHFR) is an enzyme that plays a key role in providing methyl groups for DNA methylation, including during spermatogenesis. A common genetic variant in humans (MTHFR 677C>T) results in reduced enzyme activity and has been linked to various disorders, including male infertility. A new animal model has been created by reproducing the human equivalent of the polymorphism in mice using CRISPR/Cas9. Biochemical parameters in the Mthfr 677TT mice recapitulate alterations found in MTHFR 677TT men. Our aims were to characterize the sperm DNA methylome of the Mthfr 677CC and TT mice on a control diet (2 mg folic acid/kg diet) and assess the effects of folic acid supplementation (10 mg/kg diet) on the sperm DNA methylome. Body and reproductive organ weights, testicular sperm counts, and histology were examined. DNA methylation in sperm was assessed using bisulfite pyrosequencing and whole-genome bisulfite sequencing (WGBS). Reproductive parameters and locus-specific imprinted gene methylation were unaffected by genotype or diet. Using WGBS, sperm from 677TT mice had 360 differentially methylated tiles as compared to 677CC mice, predominantly hypomethylation (60% of tiles). Folic acid supplementation mostly caused hypermethylation in sperm of males of both genotypes and was found to partially correct the DNA methylation alterations in sperm associated with the TT genotype. The new mouse model will be useful in understanding the role of MTHFR deficiency in male fertility and in designing folate supplementation regimens for the clinic.
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Affiliation(s)
- Edgar Martínez Duncker Rebolledo
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Donovan Chan
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Karen E Christensen
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | | | - Gareth R Howell
- The Jackson Laboratory, Bar Harbor, ME, USA
- Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
| | - Rima Rozen
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Jacquetta Trasler
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Department of Pediatrics, McGill University, Montreal, QC, Canada
- Department of Pharmacology & Therapeutics, Montreal, QC, Canada
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Su Z, Liu Z, Lei W, Xia K, Xiao A, Hu Z, Zhou M, Zhu F, Tian J, Yang M, Wang D, Xiang AP, Nie J. Hyperhomocysteinemia lowers serum testosterone concentration via impairing testosterone production in Leydig cells. Cell Biol Toxicol 2023; 39:3077-3100. [PMID: 37495868 DOI: 10.1007/s10565-023-09819-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 07/12/2023] [Indexed: 07/28/2023]
Abstract
Hyperhomocysteinemia (HHcy) plays a salient role in male infertility. However, whether HHcy interferes with testosterone production remains inconclusive. Here, we reported a lower serum testosterone level in HHcy mice. Single-cell RNA sequencing revealed that genes related to testosterone biosynthesis, together with nuclear receptor subfamily 5 group A member 1 (Nr5a1), a key transcription factor for steroidogenic genes, were downregulated in the Leydig cells (LCs) of HHcy mice. Mechanistically, Hcy lowered trimethylation of histone H3 on lysine 4 (H3K4me3), which was bound on the promoter region of Nr5a1, resulting in downregulation of Nr5a1. Intriguingly, we identified an unknown cell cluster annotated as Macrophage-like Leydig cells (McLCs), expressing both LCs and macrophages markers. In HHcy mice, McLCs were shifted toward pro-inflammatory phenotype and thus promoted inflammatory response in LC. Betaine supplementation rescued the downregulation of NR5A1 and restored the serum testosterone level in HHcy mice. Overall, our study highlights an etiological role of HHcy in LCs dysfunction.
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Affiliation(s)
- Zhiyuan Su
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Zhuoliang Liu
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Wenjing Lei
- Department of Nephrology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Kai Xia
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
- National-Local Joint Engineering Research Center for Stem Cells and Regenerative Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
| | - An Xiao
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Zheng Hu
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Miaomiao Zhou
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Fengxin Zhu
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Jianwei Tian
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Manqiu Yang
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Dong Wang
- Department of Bioinformatics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Andy Peng Xiang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
- National-Local Joint Engineering Research Center for Stem Cells and Regenerative Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
| | - Jing Nie
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Key Laboratory of Organ Failure Research (Ministry of Education), Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Odroniec A, Olszewska M, Kurpisz M. Epigenetic markers in the embryonal germ cell development and spermatogenesis. Basic Clin Androl 2023; 33:6. [PMID: 36814207 PMCID: PMC9948345 DOI: 10.1186/s12610-022-00179-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 11/25/2022] [Indexed: 02/24/2023] Open
Abstract
Spermatogenesis is the process of generation of male reproductive cells from spermatogonial stem cells in the seminiferous epithelium of the testis. During spermatogenesis, key spermatogenic events such as stem cell self-renewal and commitment to meiosis, meiotic recombination, meiotic sex chromosome inactivation, followed by cellular and chromatin remodeling of elongating spermatids occur, leading to sperm cell production. All the mentioned events are at least partially controlled by the epigenetic modifications of DNA and histones. Additionally, during embryonal development in primordial germ cells, global epigenetic reprogramming of DNA occurs. In this review, we summarized the most important epigenetic modifications in the particular stages of germ cell development, in DNA and histone proteins, starting from primordial germ cells, during embryonal development, and ending with histone-to-protamine transition during spermiogenesis.
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Affiliation(s)
- Amadeusz Odroniec
- grid.413454.30000 0001 1958 0162Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60–479 Poznan, Poland
| | - Marta Olszewska
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland.
| | - Maciej Kurpisz
- grid.413454.30000 0001 1958 0162Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60–479 Poznan, Poland
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Naz N, Moshkdanian G, Miyan S, Eljabri S, James C, Miyan J. A Paternal Methylation Error in the Congenital Hydrocephalic Texas (H-Tx) Rat Is Partially Rescued with Natural Folate Supplements. Int J Mol Sci 2023; 24:1638. [PMID: 36675153 PMCID: PMC9860872 DOI: 10.3390/ijms24021638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/18/2023] Open
Abstract
Folate deficiencies, folate imbalance and associated abnormal methylation are associated with birth defects, developmental delays, neurological conditions and diseases. In the hydrocephalic Texas (H-Tx) rat, 10-formyl tetrahydrofolate dehydrogenase (FDH) is reduced or absent from the CSF and the nuclei of cells in the brain and liver and this is correlated with decreased DNA methylation. In the present study, we tested whether impaired folate metabolism or methylation exists in sexually mature, unaffected H-Tx rats, which may explain the propagation of hydrocephalus in their offspring. We compared normal Sprague Dawley (SD, n = 6) rats with untreated H-Tx (uH-Tx, n = 6 and folate-treated H-Tx (TrH-Tx, n = 4). Structural abnormalities were observed in the testis of uH-Tx rats, with decreased methylation, increased demethylation, and cell death, particularly of sperm. FDH and FRα protein expression was increased in uH-Tx males but not in folate-treated males but tissue folate levels were unchanged. 5-Methylcytosine was significantly reduced in untreated and partially restored in treated individuals, while 5-hydroxymethylcytosine was not significantly changed. Similarly, a decrease in DNA-methyltransferase-1 expression in uH-Tx rats was partially reversed with treatment. The data expose a significant germline methylation error in unaffected adult male H-Tx rats from which hydrocephalic offspring are obtained. Reduced methylation in the testis and sperm was partially recovered by treatment with folate supplements leading us to conclude that this neurological disorder may not be completely eradicated by maternal supplementation alone.
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Affiliation(s)
| | | | | | | | | | - Jaleel Miyan
- Division of Neuroscience, Faculty of Biology, Medicine and Health, The University of Manchester, 3.540 Stopford Building, Oxford Road, Manchester M13 9PT, UK
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Guo QN, Wang L, Liu ZY, Wang HD, Wang L, Long JG, Liao SX. Different effects of maternal homocysteine concentration, MTHFR and MTRR genetic polymorphisms on the occurrence of fetal aneuploidy. Reprod Biomed Online 2022; 45:1207-1215. [PMID: 36210274 DOI: 10.1016/j.rbmo.2022.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 12/13/2022]
Abstract
RESEARCH QUESTION Do maternal homocysteine (Hcy) concentrations, MTHFR and MTRR genes have effects on the occurrence of fetal aneuploidy? DESIGN A total of 619 aneuploidy mothers and 192 control mothers were recruited in this study. Differences in distributions of maternal MTHFR 677C>T, MTHFR 1298A>C and MTRR 66A>G genetic polymorphisms and maternal Hcy concentrations between aneuploidy mothers and control mothers were analysed. RESULTS The maternal MTHFR 677C>T polymorphism was found to be a risk factor for the occurrence of many fetal non-mosaic aneuploidies studied here, including trisomies 13, 15, 16, 18, 21, 22, TRA and TS. The maternal MTHFR 1298A>C polymorphism was found to be a risk factor specifically associated with the occurrence of fetal trisomy 15 and fetal TS. The maternal MTRR 66A>G polymorphism was found to be a risk factor only specifically associated with the occurrence of fetal trisomy 21. The Hcy concentrations of mothers of trisomies 22, 21, 18, 16, 15 and TS fetuses were significantly higher than the Hcy concentrations of control mothers. CONCLUSIONS Overall, data suggested an association between these maternal polymorphisms and the susceptibility of fetal non-mosaic trisomy and Turner syndrome. However, these three maternal polymorphisms had different associations with the susceptibility of different fetal aneuploidies, and the elevated maternal Hcy concentration appeared to be a likely risk factor for fetal Turner syndrome and fetal trisomies.
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Affiliation(s)
- Qian-Nan Guo
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shanxi 710049, China; Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Ling Wang
- Department of Medical Imaging of Henan Provincial People's Hospital, Zhengzhou Henan 450003, China
| | - Zheng-Yan Liu
- Department of Pediatrics, Xinyang Hospital of Traditional Chinese Medicine, Xinyang Henan 464000, China
| | - Hong-Dan Wang
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Li Wang
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Jian-Gang Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shanxi 710049, China.
| | - Shi-Xiu Liao
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China.
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Sarlak M, Roumiani E, Kheradmand A, Dezfoulian O, Alirezaei M, Raisi A, Davoodi F. Evaluating the effects of betaine on testicular ischemia/reperfusion injury induced by torsion/detorsion in the rat. Andrologia 2022; 54:e14559. [DOI: 10.1111/and.14559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/07/2022] [Accepted: 08/04/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Mohammad Sarlak
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Elham Roumiani
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Arash Kheradmand
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Omid Dezfoulian
- Department of Pathobiology, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Masoud Alirezaei
- Department of Basic Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Abbas Raisi
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Farshid Davoodi
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine Urmia University Urmia Iran
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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] [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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Tam N, Lai KP, Kong RYC. Comparative transcriptomic analysis reveals reproductive impairments caused by PCBs and OH-PCBs through the dysregulation of ER and AR signaling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149913. [PMID: 34474298 DOI: 10.1016/j.scitotenv.2021.149913] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Reports have highlighted the presence of PCBs and their metabolites, OH-PCBs, in human serum as well as their endocrine-disrupting effects on reproductive function through direct interactions with the androgen receptor (AR) and estrogen receptor (ER). However, the molecular mechanisms directly linking the actions of PCBs and OH-PCBs on the AR and ER to induce reproductive impairment remain poorly understood. In this study, we characterized the cellular response to PCBs and OH-PCBs acting on AR and ER transactivation at the transcriptome level coupled with bioinformatics analysis to identify the downstream pathways of androgen and estrogen signaling that leads to reproductive dysfunction. We first confirmed the agonistic and antagonistic effects of several PCBs and OH-PCBs on AR- and ER-mediated reporter gene activity using the androgen-responsive LNCaP and estrogen-responsive MCF-7 cell lines, respectively. Anti-estrogenic activity was not detected among the tested compounds; however, we found that in addition to anti-androgenic and estrogenic activity, PCB 28 and PCB 138 exhibited androgenic activity, while most of the tested OH-PCBs showed a synergistic effect on DHT-mediated transactivation of the AR. Bioinformatics analysis of transcriptome profiles from selected PCBs and OH-PCBs revealed various pathways that were dysregulated depending on their agonistic, antagonistic, or synergistic effects. The OH-PCBs with estrogenic activity affected pathways including vitamin metabolism and calcium transport. Other notable dysregulated pathways include cholesterol transport in response to androgenic PCBs, thyroid hormone metabolism in response to anti-androgenic PCBs, and antioxidant pathways in response to androgen-synergistic OH-PCBs. Our results demonstrate that PCBs and OH-PCBs directly alter specific pathways through androgen- or estrogen-mediated signaling, thereby providing additional insights into the mechanisms by which these compounds cause reproductive dysfunction.
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Affiliation(s)
- Nathan Tam
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Keng Po Lai
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR China; Department of Chemistry, City University of Hong Kong, Hong Kong, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, China.
| | - Richard Yuen Chong Kong
- Department of Chemistry, City University of Hong Kong, Hong Kong, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, China.
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Matsui Y, Hayashi Y. Metabolic pathways regulating the development and non-genomic heritable traits of germ cells. J Reprod Dev 2021; 68:96-103. [PMID: 34955463 PMCID: PMC8979796 DOI: 10.1262/jrd.2021-137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Metabolism is an important cellular process necessary not only for producing energy and building blocks for cells, but also for regulating various cell functions, including intracellular
signaling, epigenomic effects, and transcription. The regulatory roles of metabolism have been extensively studied in somatic cells, including stem cells and cancer cells, but data regarding
germ cells are limited. Because germ cells produce individuals of subsequent generations, understanding the role of metabolism and its regulatory functions in germ cells is important.
Although limited information concerning the specific role of metabolism in germ cells is available, recent advances in related research have revealed specific metabolic states of
undifferentiated germ cells in embryos as well as in germ cells undergoing oogenesis and spermatogenesis. Studies have also elucidated the functions of some metabolic pathways associated
with germ cell development and the non-genomic heritable machinery of germ cells. In this review, we summarized all the available knowledge on the characteristic metabolic pathways in germ
cells, focusing on their regulatory functions, while discussing the issues that need to be addressed to enhance the understanding of germ cell metabolism.
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Affiliation(s)
- Yasuhisa Matsui
- Cell Resource Center for Biomedical Research, Institute of Development, Aging and Cancer (IDAC), Tohoku University, Miyagi 980-8575, Japan.,Graduate School of Life Sciences, Tohoku University, Miyagi 980-8577, Japan.,Graduate School of Medicine, Tohoku University, Miyagi 980-8575, Japan
| | - Yohei Hayashi
- Cell Resource Center for Biomedical Research, Institute of Development, Aging and Cancer (IDAC), Tohoku University, Miyagi 980-8575, Japan.,Graduate School of Life Sciences, Tohoku University, Miyagi 980-8577, Japan.,Graduate School of Medicine, Tohoku University, Miyagi 980-8575, Japan
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Wang W, Peng M, Yuan H, Liu C, Zhang Y, Fang Y, Su Y, Zhang X, Zhang H, Tang Y, Zhao K. Studying the mechanism of sperm DNA damage caused by folate deficiency. J Cell Mol Med 2021; 26:776-788. [PMID: 34953021 PMCID: PMC8817123 DOI: 10.1111/jcmm.17119] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/25/2021] [Accepted: 11/08/2021] [Indexed: 12/27/2022] Open
Abstract
Sperm DNA injury is one of the common causes of male infertility. Folic acid deficiency would increase the methylation level of the important genes, including those involved in DNA double-strand break (DSB) repair pathway. In the early stages, we analysed the correlation between seminal plasma folic acid concentration and semen parameters in 157 infertility patients and 91 sperm donor volunteers, and found that there was a significant negative correlation between seminal folic acid concentration and sperm DNA Fragmentation Index (DFI; r = -0.495, p < 0.01). Then through reduced representation bisulphite sequencing, global DNA methylation of sperm of patients in the low folic acid group and the high folic acid group was analysed, it was found that the methylation level in Rad54 promoter region increased in the folic acid deficiency group compared with the normal folic acid group. Meanwhile, the results of animal model and spermatocyte line (GC-2) also found that folic acid deficiency can increase the methylation level in Rad54 promoter region, increased sperm DFI in mice, increased the expression of γ-H2AX, that is, DNA injury marker protein, and increased sensitivity of GC-2 to external damage and stimulation. The study indicates that the expression of Rad54 is downregulated by folic acid deficiency via DNA methylation. This may be one of the mechanisms of sperm DNA damage caused by folate deficiency.
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Affiliation(s)
- Wei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meilin Peng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongfang Yuan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiwei Fang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yufang Su
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinzong Zhang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute(Guangdong Provincial Fertility Hospital), Guangdong, China
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yunge Tang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute(Guangdong Provincial Fertility Hospital), Guangdong, China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Abstract
Sperm selection in the female reproductive tract (FRT) is sophisticated. Only about 1,000 sperm out of millions in an ejaculate reach the fallopian tube and thus have a chance of fertilizing an oocyte. In assisted reproduction techniques, sperm are usually selected using their density or motility, characteristics that do not reflect their fertilization competence and, therefore, might result in failure to fertilize the oocyte. Although sperm processing in in vitro fertilization (IVF) and intrauterine insemination (IUI) bypasses many of the selection processes in the FRT, selection by the cumulus mass and the zona pellucida remain intact. By contrast, the direct injection of a sperm into an oocyte in intracytoplasmic sperm injection (ICSI) bypasses all natural selection barriers and, therefore, increases the risk of transferring paternal defects such as fragmented DNA and genomic abnormalities in sperm to the resulting child. Research into surrogate markers of fertilization potential and into simulating the natural sperm selection processes has progressed. However, methods of sperm isolation - such as hyaluronic acid-based selection and microfluidic isolation based on sperm tactic responses - use only one or two parameters and are not comparable with the multistep sperm selection processes naturally occurring within the FRT. Fertilization-competent sperm require a panel of molecules, including zona pellucida-binding proteins and ion channel proteins, that enable them to progress through the FRT to achieve fertilization. The optimal artificial sperm selection method will, therefore, probably need to use a multiparameter tool that incorporates the molecular signature of sperm with high fertilization potential, and their responses to external cues, within a microfluidic system that can replicate the physiological processes of the FRT in vitro.
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13
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Karimian M, Parvaresh L, Behjati M. Genetic variations as molecular diagnostic factors for idiopathic male infertility: current knowledge and future perspectives. Expert Rev Mol Diagn 2021; 21:1191-1210. [PMID: 34555965 DOI: 10.1080/14737159.2021.1985469] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Infertility is a major health problem, worldwide, which affects 10-15% of couples. About half a percent of infertility cases are related to male-related factors. Male infertility is a complex disease that is the result of various insults as lifestyle issues, genetics, and epigenetic factors. Idiopathic infertility is responsible for 30% of total cases. The genetic factors responsible for male infertility include chromosomal abnormalities, deletions of chromosome Y, and mutations and genetic variations of key genes. AREAS COVERED In this review article, we aim to narrate performed studies on polymorphisms of essential genes involved in male infertility including folate metabolizing genes, oxidative stress-related genes, inflammation, and cellular pathways related to spermatogenesis. Moreover, possible pathophysiologic mechanisms responsible for genetic polymorphisms are discussed. EXPERT OPINION Analysis and assessment of these genetic variations could help in screening, diagnosis, and treatment 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, Iran
| | - Leila Parvaresh
- Department of Anatomy, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohaddeseh Behjati
- Cellular, Molecular and Genetics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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14
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Zhang Y, Yuan H, Peng M, Hu Z, Fan Z, Xu J, He L, Wang Y, Wang W, Su Y, Liu C, Zhang H, Zhao K. Folic acid deficiency damages male reproduction via endoplasmic reticulum stress-associated PERK pathway induced by Caveolin-1 in mice. Syst Biol Reprod Med 2021; 67:383-394. [PMID: 34474604 DOI: 10.1080/19396368.2021.1954724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Folic acid is critical to maintaining normal male reproductive function. Endoplasmic reticulum (ER) stress plays a crucial role in folic acid deficiency. Studies have shown that Caveolin-1 (Cav-1) is involved in ER stress, but the specific mechanism in male reproduction is still unclear. This study aimed to investigate the effects of folic acid deficiency on spermatogenesis and elucidate the underlying mechanisms. C57BL/6 mice fed with folic acid deficiency induced diet(0.3 mg/kg) were used. A significant decrease in the sperm concentration in the folic acid deficiency group was observed. Meanwhile, folic acid deficiency decreased Cav-1 expression in the testis tissue and increased endoplasmic reticulum stress-related PERK, eIF2α, ATF4, CHOP gene expression. Our results suggest that folic acid deficiency can affect male reproduction through the Cav-1-PERK-eIFα-ATF4-CHOP pathway.Abbreviations: ATF4: activating transcription factor 4; Ca2+: calcium ion; Cav-1: Caveolin-1; CCK-8: cell counting kit-8; CHOP: CCAAT-enhancer-binding protein homologous protein; DNA: Deoxyribonucleic acid; DSB: double strand breakage; eIF2α: eukaryotic Initiation Factor 2 alpha; ER: endoplasmic reticulum; FD: folic acid deficiency; FITC: fluorescein isothiocyanate; HE: hematoxylin and eosin; H3K4me3: histone H3 lysine 4 trimethylation; PERK: protein kinase RNA-like endoplasmic reticulum kinase; PI: propidium iodide; RT-qPCR: quantitative reverse transcription PCR; TUNEL: TdT mediated dUTP Nick End Labeling.
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Affiliation(s)
- Yuan Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongfang Yuan
- Department of Obstetrics And Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meilin Peng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiyong Hu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zunpan Fan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Xu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liting He
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yongfeng Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yufang Su
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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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] [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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16
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Saebnia N, Neshati Z, Bahrami AR. Role of microRNAs in etiology of azoospermia and their application as non-invasive biomarkers in diagnosis of azoospermic patients. J Gynecol Obstet Hum Reprod 2021; 50:102207. [PMID: 34407467 DOI: 10.1016/j.jogoh.2021.102207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/18/2022]
Abstract
Azoospermia is a common cause of male infertility without any sperm in the semen and consists of ∼1% of all males and ∼15% of infertile ones. Currently, no accurate non-invasive diagnostic method exists for patients with azoospermia and testis biopsy is mandatory to determine if any spermatozoa exist in the testes. Studies have clarified that the expression of some distinct microRNAs shows alterations in azoospermic patients. MicroRNAs play critical roles during spermatogenesis and their dysregulation can defect this process. Here, we review studied microRNAs involved in the pathogenesis of azoospermia and their target genes. Moreover, we will imply the utility of seminal plasma microRNAs as non-invasive diagnostic biomarkers for azoospermia. We hope such studies could help patients with azoospermia in both diagnosis and treatment, in order that they could father their own biological children.
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Affiliation(s)
- Neda Saebnia
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Zeinab Neshati
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Ahmad Reza Bahrami
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Industrial Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
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17
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Karahan G, Chan D, Shirane K, McClatchie T, Janssen S, Baltz JM, Lorincz M, Trasler J. Paternal MTHFR deficiency leads to hypomethylation of young retrotransposons and reproductive decline across two successive generations. Development 2021; 148:dev199492. [PMID: 34128976 PMCID: PMC8276981 DOI: 10.1242/dev.199492] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/01/2021] [Indexed: 12/17/2022]
Abstract
5,10-Methylenetetrahydrofolate reductase (MTHFR) is a crucial enzyme in the folate metabolic pathway with a key role in generating methyl groups. As MTHFR deficiency impacts male fertility and sperm DNA methylation, there is the potential for epimutations to be passed to the next generation. Here, we assessed whether the impact of MTHFR deficiency on testis morphology and sperm DNA methylation is exacerbated across generations in mouse. Although MTHFR deficiency in F1 fathers has only minor effects on sperm counts and testis weights and histology, F2 generation sons show further deterioration in reproductive parameters. Extensive loss of DNA methylation is observed in both F1 and F2 sperm, with >80% of sites shared between generations, suggestive of regions consistently susceptible to MTHFR deficiency. These regions are generally methylated during late embryonic germ cell development and are enriched in young retrotransposons. As retrotransposons are resistant to reprogramming of DNA methylation in embryonic germ cells, their hypomethylated state in the sperm of F1 males could contribute to the worsening reproductive phenotype observed in F2 MTHFR-deficient males, compatible with the intergenerational passage of epimutations.
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Affiliation(s)
- Gurbet Karahan
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Donovan Chan
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Kenjiro Shirane
- Department of Medical Genetics, Molecular Epigenetics Group, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Taylor McClatchie
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
- Departments of Obstetrics and Gynecology and Cellular and Molecular Medicine, University of Ottawa Faculty of Medicine, Ottawa, ON K1H 8M5, Canada
| | - Sanne Janssen
- Department of Medical Genetics, Molecular Epigenetics Group, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jay M. Baltz
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
- Departments of Obstetrics and Gynecology and Cellular and Molecular Medicine, University of Ottawa Faculty of Medicine, Ottawa, ON K1H 8M5, Canada
| | - Matthew Lorincz
- Department of Medical Genetics, Molecular Epigenetics Group, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jacquetta Trasler
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H3A 1A3, Canada
- Department of Pediatrics, McGill University, Montreal, QC H4A 3J1, Canada
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18
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Minor allele of rs55763075 located in MTHFR is associated with the risk of cognitive impairment after anesthesia via modulating miR-34b. Sci Rep 2021; 11:11157. [PMID: 34045473 PMCID: PMC8159953 DOI: 10.1038/s41598-021-90229-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 04/29/2021] [Indexed: 11/27/2022] Open
Abstract
This study aimed to investigate the association between cognitive impairment after general anesthesia and rs55763075 polymorphisms. We enrolled and grouped patients undergoing general anesthesia according to their genotypes of rs55763075 polymorphism. Mini–Mental State Examination (MMSE) scoring was performed to evaluate the cognitive status of patients. Quantitative real-time PCR was carried out to analyze the expression of methylenetetrahydrofolate reductase (MTHFR) mRNA and miR-34b while Western blot was performed to evaluate the expression of MTHFR protein. Furthermore, we studied the effect of rs55763075 polymorphism on the expression of MEHFR via luciferase assay. Accordingly, we found that the MMSE score in GG/GA groups was significantly higher than that in AA group. And a significant reduction of MTHFR mRNA expression was observed in the serum and peripheral blood mononuclear cells (PBMCs) of patients carrying AA genotype compared with the patients carrying GG/GA genotypes. Moreover, the MTHFR expression was much lower in the cultured AA-genotyped cells transfected with miR-34b. Luciferase assay results also showed that miR-34b transfection reduced luciferase activity in the cells carrying A allele but not in cells carrying G allele. In summary, the data of this study showed that minor allele (A) of rs55763075 polymorphisms in the 3'-untranslated region of MTHFR mRNA generated a potential binding site for miR-34b, which led to reduced level of folic acid in the patients carrying the AA genotype. Furthermore, we found that the MMSE score of AA-genotyped patients was lower than that of patients carrying GG/GA genotypes.
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19
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Vanderhout SM, Rastegar Panah M, Garcia-Bailo B, Grace-Farfaglia P, Samsel K, Dockray J, Jarvi K, El-Sohemy A. Nutrition, genetic variation and male fertility. Transl Androl Urol 2021; 10:1410-1431. [PMID: 33850777 PMCID: PMC8039611 DOI: 10.21037/tau-20-592] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Infertility affects nearly 50 million couples worldwide, with 40-50% of cases having a male factor component. It is well established that nutritional status impacts reproductive development, health and function, although the exact mechanisms have not been fully elucidated. Genetic variation that affects nutrient metabolism may impact fertility through nutrigenetic mechanisms. This review summarizes current knowledge on the role of several dietary components (vitamins A, B12, C, D, E, folate, betaine, choline, calcium, iron, caffeine, fiber, sugar, dietary fat, and gluten) in male reproductive health. Evidence of gene-nutrient interactions and their potential effect on fertility is also examined. Understanding the relationship between genetic variation, nutrition and male fertility is key to developing personalized, DNA-based dietary recommendations to enhance the fertility of men who have difficulty conceiving.
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Affiliation(s)
| | | | | | | | - Konrad Samsel
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
| | - Judith Dockray
- Murray Koffler Urologic Wellness Centre, Department of Urology, Mount Sinai Hospital, Toronto, ON, Canada
| | - Keith Jarvi
- Murray Koffler Urologic Wellness Centre, Department of Urology, Mount Sinai Hospital, Toronto, ON, Canada
| | - Ahmed El-Sohemy
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
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20
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Wu Y, Ding R, Zhang X, Zhang J, Huang Q, Liu L, Shen H. Meet-in-metabolite analysis: A novel strategy to identify connections between arsenic exposure and male infertility. ENVIRONMENT INTERNATIONAL 2021; 147:106360. [PMID: 33401174 DOI: 10.1016/j.envint.2020.106360] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/07/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Despite a trend in the use of systems epidemiology to fill the knowledge gap between risk-factor exposure and adverse outcomes in the OMICS data, such as the metabolome, seriously hindrances need to be overcome for identifying molecular connections. OBJECTIVES Using male infertility phenotypes and arsenic exposure, we aimed to identify intermediate biomarkers that reflect both arsenic exposure and male infertility with a meet-in-metabolite analysis (MIMA). METHODS Urinary arsenic levels and metabolome were measured by using inductively coupled plasma-mass spectrometry (ICP-MS) and HPLC-quadrupole time-of-flight mass spectrometry (HPLC-QTOF-MS), respectively. To identify arsenic-related metabolic markers (A-MIMA), the intermediate markers were profiled by orthogonal projections to latent structures (OPLS-DA). To detect infertility-related metabolic markers (I-MIMA), the intermediate markers were investigated by weighted gene co-expression network analysis. The key node markers, related to both A-MIMA and I-MIMA, were determined by O2PLS and defined as MIMA markers. Finally, network analysis was used to construct the MIMA-related metabolic network. RESULTS Twelve markers each were defined through the significant associations with arsenic exposure (A-MIMA) and/or infertility (I-MIMA), respectively. Seven of them, including acetyl-N-formyl-5-methoxykynurenamine, carnitine, estrone, 2-oxo-4-methylthiobutanoic acid, malonic acid, valine, and LysoPC (10:0), were defined through the associations with both arsenic exposure and male infertility (MIMA markers). These intermediate markers were involved majorly in oxidative stress, one-carbon metabolism, steroid hormone homeostasis, and lipid metabolism pathways. The core correlation network analysis further highlighted that testosterone is a vital link between the effect of arsenic and male infertility. CONCLUSIONS From arsenic exposure to male infertility, the arsenic methylation that coupled one-carbon metabolism disruption with oxidation stress may have extended its effect to fatty acid oxidation and steroidogenesis dysfunction. Testosterone is at the hub between arsenic exposure and male infertility modules and, along with the related metabolic pathways, may service as a potential surrogate marker in risk assessment for male dysfunction due to arsenic exposure.
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Affiliation(s)
- Yan Wu
- Department of Health Inspection and Quarantine, The School of Public Health, Fujian Medical University, Fuzhou, Fujian 350122, PR China
| | - Rui Ding
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, Fujian Province 350007, PR China
| | - Xi Zhang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Jie Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, PR China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Qingyu Huang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Liangpo Liu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China; School of Public Health, Shanxi Medical University, Taiyuan 030001, PR China
| | - Heqing Shen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, PR China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
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21
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Raigani M, Lakpour N, Soleimani M, Johari B, Sadeghi MR. A Association of MTHFR C677T and MTRR A66G Gene Polymorphisms with Iranian Male Infertility and Its Effect on Seminal Folate and Vitamin B12. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2021; 15:20-25. [PMID: 33497043 PMCID: PMC7838758 DOI: 10.22074/ijfs.2021.6155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 06/29/2020] [Indexed: 11/09/2022]
Abstract
Background The relation between key enzymes in regulation of folate metabolism and male infertility is the subject
of numerous studies. We aimed to determine whether 5, 10-methylenetetrahydrofolate reductase (MTHFR) C677T
and methionine synthase reductase (MTRR) A66G genotypes are associated with male infertility in Iranian men and
to evaluate its effect on seminal levels of folate and vitamin B12. Materials and Methods In this retrospective study, semen and peripheral blood samples were collected from 254
men with oligoasthenoteratozoospermia (OAT) and 77 normozoospermic men who attended Avicenna infertility clin-
ic. Single nucleotide polymorphism (SNP) analysis was carried out in genomic DNA by polymerase chain reaction
(PCR)-restriction fragment length polymorphism (RFLP) method for MTHFR C677T and MTRR A66G gene poly-
morphisms. Results In MTHFR C677T, our founding showed that T carrier was conversely lower in OAT than normozoospermic men
(χ2-test=7.245, P=0.02) whereas in MTRR A66G, A and G carrier showed no significant difference between the two groups
(χ2-test=1.079, P=0.53). The concentration of seminal folate was not different between normozoospermic (18.83 ± 17.1 ng/
ml) and OAT (16.96 ± 14.2 ng/ml) men (P=0.47). The concentration of vitamin B12 was slightly higher in normozospermic
men (522.6 ± 388.1 pg/ml) compared to OAT men (412.9 ± 303.6 pg/ml, P=0.058). Conclusion The MTHFR C677T and MTRR A66G have no effect on the concentrations of seminal folate and vitamin
B12. The present study showed that two SNPs of MTRR A66G and MTHFR C677T cannot be seen as a risk factor for
male factor subfertility.
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Affiliation(s)
- Mozhgan Raigani
- Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Niknam Lakpour
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Meysam Soleimani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Behrooz Johari
- Department of Medical Biotechnology and Nanotechnology, School of Medicine, Zanjan University of Medical Science, Zanjan, Iran
| | - Mohammad Reza Sadeghi
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
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22
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Kulac T, Hekim N, Kocamanoglu F, Beyaz C, Gunes S, Asci R. Methylation patterns of methylenetetrahydrofolate reductase gene promoter in infertile males. Andrologia 2020; 53:e13942. [PMID: 33372270 DOI: 10.1111/and.13942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/09/2020] [Accepted: 11/25/2020] [Indexed: 01/26/2023] Open
Abstract
Errors of folate/homocysteine pathways which are critical for transferring methyl groups have been suggested to affect male fertility. We aimed to evaluate the methylation patterns of the promoter of methylenetetrahydrofolate reductase (MTHFR) gene in infertile males and to investigate the association between MTHFR promoter methylation and success of sperm retrieval. Thirty-five nonobstructive azoospermic and 46 severe oligozoospermic patients constituted the study group and were compared with 49 fertile and/or normozoospermic men. The methylation status was analysed by methylation-specific polymerase chain reaction. MTHFR promoter methylation was detected in infertile men with NOA and SO in the ratio of 48.6% and 58.7%, respectively. Methylation was also observed in 51% of controls. MTHFR promoter was methylated in 65% of men with viable spermatozoon during TESE. No association was found regarding to the profile of MTHFR promoter methylation between both NOA and SO patients and controls (p = .621). There was no relation between the methylation status of MTHFR promoter and low motility and poor morphology (p = .682 and p = .413, respectively). No association was found between MTHFR promoter methylation and presence of viable spermatozoa (p = .382). Our data indicate that the promoter methylation of MTHFR gene may not be associated with male infertility.
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Affiliation(s)
- Tuba Kulac
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Neslihan Hekim
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Fatih Kocamanoglu
- Department of Urology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Cengiz Beyaz
- Department of Urology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Sezgin Gunes
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.,Department of Multidisciplinary Molecular Medicine, Health Sciences Institute, Ondokuz Mayis University, Samsun, Turkey
| | - Ramazan Asci
- Department of Urology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.,Department of Multidisciplinary Molecular Medicine, Health Sciences Institute, Ondokuz Mayis University, Samsun, Turkey
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Aitken RJ. The Male Is Significantly Implicated as the Cause of Unexplained Infertility. Semin Reprod Med 2020; 38:3-20. [PMID: 33086406 DOI: 10.1055/s-0040-1718941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Male infertility is recognized as a relatively common, complex condition, generated by a broad array of environmental and genetic factors. Historical reliance on the conventional semen profile has tended to underestimate the true contribution of "the male factor" to human infertility. This review highlights the importance of genetic and epigenetic factors in the etiology of male infertility, identifying a range of mutations responsible for primary testicular failure and impaired fertilizing potential. More than three quarters of all de novo mutations arise in the male germline via mechanisms that involve the inefficient or defective repair of DNA damage. Understanding the range of factors capable of creating genetic turmoil in the paternal germline is essential, if we are to gain a deep understanding of the causes of male infertility, rather than just the symptoms that characterize its presence. High levels of DNA fragmentation induced by oxidative stress are part of this equation. Oxidative stress is, in turn, driven by biological (age, ejaculation frequency, varicocele, infection), lifestyle (smoking, obesity), and environmental factors (heat, other forms of electromagnetic radiation, and toxins) that can impair the fertilizing potential of the spermatozoa and influence the incidence of spontaneous mutations that may cause infertility in the offspring.
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Affiliation(s)
- Robert John Aitken
- Priority Research Centre in Reproductive Science, Faculty of Science and Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, Newcastle, New South Wales, Australia
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Histological Analysis, Bioinformatics Profile, and Expression of Methylenetetrahydrofolate Reductase (MTHFR) in Bovine Testes. Animals (Basel) 2020; 10:ani10101731. [PMID: 32977696 PMCID: PMC7598625 DOI: 10.3390/ani10101731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/29/2020] [Accepted: 09/17/2020] [Indexed: 11/29/2022] Open
Abstract
Simple Summary To date, several genes have been sequenced but their corresponding protein characteristics remain unknown. This study highlights the histological structure of bovine (yellow-cattle and yak) testes as a build-up to exploring the bioinformatics profile and expression characteristics of methylenetetrahydrofolate reductase (MTHFR) in bovine testes. Our findings suggest that yellow-cattle testis have similar anatomical characteristics with that of yak, except for the weight or size, for which that of yellow-cattle is significantly higher or greater than yak. We also found that the secondary and 3D protein structures of MTHFR were similar to that of humans, with differences in the number of nucleotides, amino acids, and some physico-chemical characteristics. Moreover, MTHFR mRNA expression was higher in adult yellow-cattle and yak compared to their juvenile ones, however, its protein expression was higher but not statistically significant in adult yellow-cattle and yak compared to the juvenile ones. This provides a basis for further investigations into the regulatory function of MTHFR in bovine testes. Abstract Methylenetetrahydrofolate reductase (MTHFR), an enzyme expressed in mammalian testes, exerts a direct effect on spermatogenesis; however, its protein characteristics in bovine testes remain unknown. Here, we analysed bovine testicular structure, MTHFR bioinformatics profile, mRNA, and protein expression characteristics in yellow-cattle (y-c) and yak testis using histological procedures, bioinformatics analysis, qRT-PCR, and western blot. Testes from 13 bovines, ≤2 years juvenile (y-c, n = 3; yak, n = 3) and ≥3 years adult (y-c, n = 3; yak, n = 4) were collected and analysed. Anatomical characteristics of testis in y-c and yak were similar except the weight or size for which that of y-c was significantly higher or greater than yak. In y-c, an open reading frame (ORF) for 2600 nucleotides sequence, encoding 655 amino acids showed high homology with zebu cattle (99.51%) and wild yak (98.68%). Secondary and 3D protein structures were similar to that of humans with differences in the number of nucleotides, amino acids, and some physico-chemical characteristics. MTHFR mRNA expression in y-c and yak were significantly higher in adult testes compared with juvenile ones. However, its protein expression was higher, but not statistically significant, in adult y-c and yak compared to the juvenile ones. The highlights and inferences of these and other findings are discussed.
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Blake GET, Hall J, Petkovic GE, Watson ED. Analysis of spermatogenesis and fertility in adult mice with a hypomorphic mutation in the Mtrr gene. Reprod Fertil Dev 2020; 31:1730-1741. [PMID: 31537252 DOI: 10.1071/rd19064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/16/2019] [Indexed: 01/22/2023] Open
Abstract
Recent research has focussed on the significance of folate metabolism in male fertility. Knocking down the mouse gene Mtrr impedes the progression of folate and methionine metabolism and results in hyperhomocysteinaemia, dysregulation of DNA methylation and developmental phenotypes (e.g. neural tube, heart and placenta defects). The Mtrrgt mouse line is a model of transgenerational epigenetic inheritance (TEI), the hypothesised cause of which is the inheritance of a yet-to-be determined epigenetic factor via the germline. We investigated Mtrrgt/gt testes and sperm function compared with control C57Bl/6J testes to explore potential defects that might confound our understanding of TEI in the Mtrrgt model. Histological analysis revealed that adult Mtrrgt/gt testes are more spherical in shape than C57Bl/6J testes, though serum testosterone levels were normal and spermatogenesis progressed in a typical manner. Spermatozoa collected from the cauda epididymis showed normal morphology, counts, and viability in Mtrrgt/gt males. Correspondingly, Mtrrgt spermatozoa contributed to normal pregnancy rates. Similar parameters were assessed in Mtrr+/+ and Mtrr+/gt males, which were normal compared with controls. Overall, our data showed that the Mtrrgt allele is unlikely to alter spermatogenesis or male fertility. Therefore, it is improbable that these factors confound the mechanistic study of TEI in Mtrrgt mice.
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Affiliation(s)
- Georgina E T Blake
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK; and Centre for Trophoblast Research, University of Cambridge, Cambridge, CB2 3EG, UK
| | - Jessica Hall
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
| | - Grace E Petkovic
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
| | - Erica D Watson
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK; and Centre for Trophoblast Research, University of Cambridge, Cambridge, CB2 3EG, UK; and Corresponding author.
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26
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Xie C, Ping P, Ma Y, Wu Z, Chen X. Correlation between methylenetetrahydrofolate reductase gene polymorphism and oligoasthenospermia and the effects of folic acid supplementation on semen quality. Transl Androl Urol 2019; 8:678-685. [PMID: 32038964 DOI: 10.21037/tau.2019.11.17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background The present study investigated the correlation between 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and oligoasthenospermia, as well as the effects of folic acid supplementation on semen quality. Methods The present study was a case control study. The PCR-chip assay was applied to analyze the distribution characteristics of the frequencies and genotypes of the MTHFR C677T allele in 167 Han Chinese patients with idiopathic male infertility (including 86 patients with oligospermia and 81 patients with asthenospermia) and in 78 males with normal semen parameters. Moreover, homocysteine (Hcy) levels were assessed for the different groups. Semen quality was measured following three months of folic acid supplementation for the oligospermia and asthenospermia groups. Results The cytosine-thymine (CT) genotype (50% vs. 39.5%) and the thymine-thymine (TT) genotype (51.2% vs. 7.7%) carriers in the oligospermia group exhibited significantly higher percentages compared with those of the control group. The percentage of the CT genotype carriers in the asthenospermia group was significantly higher compared with that of the control group (59.3% vs. 50%), while the frequency of the TT genotype was significantly increased (22.2% vs. 7.7%). Furthermore, serum Hcy levels in the oligospermia and asthenospermia groups were significantly higher compared with those of the control group. The data also demonstrated that sperm density increased significantly following three months of folic acid supplementation to patients with oligospermia or asthenospermia. In these patients, the highest increase was noted for the subjects carrying the TT genotype. Conclusions The MTHFR C677T mutation and the elevated Hcy levels are important risk factors for the development of oligoasthenospermia. Folic acid supplementation can significantly improve sperm density.
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Affiliation(s)
- Chong Xie
- Center for Reproductive Medicine, the International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.,Shanghai Key laboratory of Embryo Original Diseases, Shanghai 200030, China.,Shanghai Municipal Key Clinical Specialty, Shanghai 200030, China
| | - Ping Ping
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China
| | - Yi Ma
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China
| | - Zhengmu Wu
- Center for Reproductive Medicine, the International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.,Shanghai Key laboratory of Embryo Original Diseases, Shanghai 200030, China.,Shanghai Municipal Key Clinical Specialty, Shanghai 200030, China
| | - Xiangfeng Chen
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China.,Shanghai Human Sperm Bank, Shanghai 200135, China
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Liu Y, Zhang F, Dai L. C677T polymorphism increases the risk of early spontaneous abortion. J Assist Reprod Genet 2019; 36:1737-1741. [PMID: 31209737 PMCID: PMC6707973 DOI: 10.1007/s10815-019-01500-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/29/2019] [Indexed: 12/21/2022] Open
Abstract
Purpose To investigate the relationship of the methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism in male population having spouses with early spontaneous abortion. Methods A total of 345 males whose spouses had at least one early spontaneous abortion were included in the study group, and 145 males who planned to have a second child were included in the control group. Semen was collected in a sterile cup by masturbation. After liquefaction, the sperm concentration and forward motility sperm rate (PR) were obtained. The genomic DNA was extracted from peripheral vein, followed by MTHFR C677T polymorphism detection through PCR-gold magnetic nanoparticle chromatography. Results The numbers of alleles and genotypes of MTHFR in the case group were 303 (C), 387 (T), 64 (CC), 175 (CT), and 106 (TT) cases, respectively. The numbers of allele and genotype of MTHFR in the control group were 167 (C), 123 (T), 145 (CC), 65 (CT), and 29 (TT) cases. There were significant differences in the distribution frequency of genotypes (χ2 = 17.005, P = 0.000) and alleles (χ2 = 15.295, P = 0.000) between the two groups. For cases with more spontaneous abortion, more cases had CT and TT phenotypes. Participants with genotype CT had the highest sperm concentration and PR in both groups (P < 0.05). Conclusions MTHFR could affect sperm DNA integrity through affecting DNA methylation, which led to an increase in the rate of early spontaneous abortion in spouses. Electronic supplementary material The online version of this article (10.1007/s10815-019-01500-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yongjie Liu
- Department of Reproductive Center, Yinchuan Maternal and Child Health Hospital, No. 56, Culture West Street, Xingqing District, Yinchuan, 750001, Ningxia, China.
| | - Fan Zhang
- Department of Reproductive Center, Yinchuan Maternal and Child Health Hospital, No. 56, Culture West Street, Xingqing District, Yinchuan, 750001, Ningxia, China
| | - Liang Dai
- Department of Reproductive Center, Yinchuan Maternal and Child Health Hospital, No. 56, Culture West Street, Xingqing District, Yinchuan, 750001, Ningxia, China
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28
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Biochemical and Histological Evaluation of Protective Effect of Betaine in Experimental Varicocele Using Animal Model. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-018-9718-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Nassan FL, Chavarro JE, Tanrikut C. Diet and men's fertility: does diet affect sperm quality? Fertil Steril 2019; 110:570-577. [PMID: 30196939 DOI: 10.1016/j.fertnstert.2018.05.025] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 05/23/2018] [Indexed: 12/27/2022]
Abstract
Male contribution to a couple's fecundity is important, and identifying the dietary factors that can influence male fertility potential is of high importance. Despite this importance, there are currently no clear clinical guidelines for male patients seeking fertility treatment. In this review, we present the most up-to-date evidence about diet and male fertility in humans. We focus on the dietary factors necessary for production of healthy functioning sperm with high fertility potential. Based on this review, men may be encouraged to use antioxidant supplements and to follow dietary patterns favoring the consumption of seafood, poultry, nuts, whole grains, fruits, and vegetables. Evidence is strongest for recommending the use of antioxidant supplements to men in couples undergoing infertility treatment-although the specific antioxidants and doses remain unclear-and increasing consumption of omega-3 fatty acids from fish and nuts.
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Affiliation(s)
- Feiby L Nassan
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts
| | - Cigdem Tanrikut
- Department of Urology, Shady Grove Fertility, Baltimore, Maryland.
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30
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Clare CE, Brassington AH, Kwong WY, Sinclair KD. One-Carbon Metabolism: Linking Nutritional Biochemistry to Epigenetic Programming of Long-Term Development. Annu Rev Anim Biosci 2019; 7:263-287. [DOI: 10.1146/annurev-animal-020518-115206] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
One-carbon (1C) metabolism comprises a series of interlinking metabolic pathways that include the methionine and folate cycles that are central to cellular function, providing 1C units (methyl groups) for the synthesis of DNA, polyamines, amino acids, creatine, and phospholipids. S-adenosylmethionine is a potent aminopropyl and methyl donor within these cycles and serves as the principal substrate for methylation of DNA, associated proteins, and RNA. We propose that 1C metabolism functions as a key biochemical conduit between parental environment and epigenetic regulation of early development and that interindividual and ethnic variability in epigenetic-gene regulation arises because of genetic variants within 1C genes, associated epigenetic regulators, and differentially methylated target DNA sequences. We present evidence to support these propositions, drawing upon studies undertaken in humans and animals. We conclude that future studies should assess the epigenetic effects of cumulative (multigenerational) dietary imbalances contemporaneously in both parents, as this better represents the human experience.
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Affiliation(s)
- Constance E. Clare
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Amey H. Brassington
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Wing Yee Kwong
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Kevin D. Sinclair
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
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31
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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] [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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Bisht S, Chawla B, Dada R. Oxidative Stress and Polymorphism in MTHFR SNPs (677 and 1298) in Paternal Sperm DNA is Associated with an Increased Risk of Retinoblastoma in Their Children: A Case-Control Study. J Pediatr Genet 2018; 7:103-113. [PMID: 30105117 DOI: 10.1055/s-0038-1667037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/05/2018] [Indexed: 01/25/2023]
Abstract
Sperm DNA is considered as the most vulnerable to oxidative stress-induced damage that also impairs global sperm DNA methylation leading to sperm-associated pathologies. C677T and A1298C polymorphisms of the methylene tetrahydrofolate reductase (MTHFR) gene affect MTHFR enzyme activity. This study was planned as a case-control study to determine the MTHFR gene polymorphisms in the fathers of children affected with sporadic nonfamilial heritable retinoblastoma in an Indian population. MTHFR polymorphisms for single nucleotide polymorphisms 677 and 1298 were also determined in sporadic nonfamilial heritable retinoblastoma patients to estimate the risk for retinoblastoma development and to evaluate the role of MTHFR in retinoblastoma pathogenesis.
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Affiliation(s)
- Shilpa Bisht
- Laboratory for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Bhavna Chawla
- Ocular Oncology and Pediatric Ophthalmology Service, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Rima Dada
- Laboratory for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
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Tazari M, Baghshani H, Moosavi Z. Effect of betaine versus arsenite-induced alterations of testicular oxidative stress and circulating androgenic indices in rats. Andrologia 2018; 50:e13091. [PMID: 29987898 DOI: 10.1111/and.13091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/21/2018] [Accepted: 06/11/2018] [Indexed: 11/28/2022] Open
Abstract
The aim of this work was to study the alleviative role of betaine versus arsenite-provoked alterations in testis oxidative status and circulating androgenic indices. Twenty-four adult male rats (204.5 ± 21 g) were divided into four groups, equally. Control group was given basal diet and tap water. Group 2 rats received arsenite (100 mg/L) in drinking water. Rats in group 3 received betaine (2% of the diet) during arsenite exposure. Group 4 received betaine at 2% of the diet during study period (30 days). The results revealed significant decrease in testicular glutathione peroxidase, catalase and glutathione in arsenite-treated animals relative to controls. Significant increase in testicular malondialdehyde was also detected in arsenite-exposed group. Concurrent administration of betaine with arsenite significantly increased glutathione and catalase amounts in comparison with arsenite group. Arsenite exposure resulted in a significant decrease in plasma testosterone and dihydrotestosterone levels over control rats, whereas supplementation of betaine augmented the hormones concentrations to the levels that had no significant difference in comparison with controls. Concentration of all measured oxidative status and hormonal variables in the betaine plus arsenite and betaine groups was not significantly different relative to controls. Taken together, betaine may be proposed as an alleviative agent against arsenite-induced male reprotoxicity.
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Affiliation(s)
- Mahjoobe Tazari
- Department of Basic Sciences, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hasan Baghshani
- Department of Basic Sciences, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Zahra Moosavi
- Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
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Ly L, Chan D, Aarabi M, Landry M, Behan NA, MacFarlane AJ, Trasler J. Intergenerational impact of paternal lifetime exposures to both folic acid deficiency and supplementation on reproductive outcomes and imprinted gene methylation. Mol Hum Reprod 2018; 23:461-477. [PMID: 28535307 DOI: 10.1093/molehr/gax029] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 05/19/2017] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION Do paternal exposures to folic acid deficient (FD), and/or folic acid supplemented (FS) diets, throughout germ cell development adversely affect male germ cells and consequently offspring health outcomes? SUMMARY ANSWER Male mice exposed over their lifetimes to both FD and FS diets showed decreased sperm counts and altered imprinted gene methylation with evidence of transmission of adverse effects to the offspring, including increased postnatal-preweaning mortality and variability in imprinted gene methylation. WHAT IS KNOWN ALREADY There is increasing evidence that disruptions in male germ cell epigenetic reprogramming are associated with offspring abnormalities and intergenerational disease. The fetal period is the critical time of DNA methylation pattern acquisition for developing male germ cells and an adequate supply of methyl donors is required. In addition, DNA methylation patterns continue to be remodeled during postnatal spermatogenesis. Previous studies have shown that lifetime (prenatal and postnatal) folic acid deficiency can alter the sperm epigenome and increase the incidence of fetal morphological abnormalities. STUDY DESIGN, SIZE, DURATION Female BALB/c mice (F0) were placed on one of four amino-acid defined diets for 4 weeks before pregnancy and throughout pregnancy and lactation: folic acid control (Ctrl; 2 mg/kg), 7-fold folic acid deficient (7FD; 0.3 mg/kg), 10-fold high FS (10FS, 20 mg/kg) or 20-fold high FS (20FS, 40 mg/kg) diets. F1 males were weaned to their respective prenatal diets to allow for diet exposure during all windows of germline epigenetic reprogramming: the erasure, re-establishment and maintenance phases. PARTICIPANTS/MATERIALS, SETTINGS, METHODS F0 females were mated with chow-fed males to produce F1 litters whose germ cells were exposed to the diets throughout embryonic development. F1 males were subsequently mated with chow-fed female mice. Two F2 litters, unexposed to the experimental diets, were generated from each F1 male; one litter was collected at embryonic day (E)18.5 and one delivered and followed postnatally. DNA methylation at a global level and at the differentially methylated regions of imprinted genes (H19, Imprinted Maternally Expressed Transcript (Non-Protein Coding)-H19, Small Nuclear Ribonucleoprotein Polypeptide N-Snrpn, KCNQ1 Opposite Strand/Antisense Transcript 1 (Non-Protein Coding)-Kcnq1ot1, Paternally Expressed Gene 1-Peg1 and Paternally Expressed Gene 3-Peg3) was assessed by luminometric methylation analysis and bisulfite pyrosequencing, respectively, in F1 sperm, F2 E18.5 placenta and F2 E18.5 brain cortex. MAIN RESULTS AND THE ROLE OF CHANCE F1 males exhibited lower sperm counts following lifetime exposure to both folic acid deficiency and the highest dose of folic acid supplementation (20FS), (both P < 0.05). Post-implantation losses were increased amongst F2 E18.5 day litters from 20FS exposed F1 males (P < 0.05). F2 litters derived from both 7FD and 20FS exposed F1 males had significantly higher postnatal-preweaning pup death (both P < 0.05). Sperm from 10FS exposed males had increased variance in methylation across imprinted gene H19, P < 0.05; increased variance at a few sites within H19 was also found for the 7FD and 20FS groups (P < 0.05). While the 20FS diet resulted in inter-individual alterations in methylation across the imprinted genes Snrpn and Peg3 in F2 E18.5 placenta, ≥50% of individual sites tested in Peg1 and/or Peg3 were affected in the 7FD and 10FS groups. Inter-individual alterations in Peg1 methylation were found in F2 E18.5 day 10FS group brain cortex (P < 0.05). LARGE SCALE DATA Not applicable. LIMITATIONS REASONS FOR CAUTION The cause of the increase in postnatal-preweaning mortality was not investigated post-mortem. Further studies are required to understand the mechanisms underlying the adverse effects of folic acid deficiency and supplementation on developing male germ cells. Genome-wide DNA and histone methylome studies as well as gene expression studies are required to better understand the links between folic acid exposures, an altered germ cell epigenome and offspring outcomes. WIDER IMPLICATIONS OF THE FINDINGS The findings of this study provide further support for paternally transmitted environmental effects. The results indicate that both folic acid deficiency and high dose supplementation can be detrimental to germ cell development and reproductive fitness, in part by altering DNA methylation in sperm. STUDY FUNDING AND COMPETING INTERESTS This study was supported by a grant to J.M.T. from the Canadian Institutes of Health Research (CIHR #89944). The authors declare they have no conflicts of interest.
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Affiliation(s)
- Lundi Ly
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Donovan Chan
- Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Mahmoud Aarabi
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Mylène Landry
- Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Nathalie A Behan
- Nutrition Research Division, Health Canada, 251 Promenade Sir Frederick Banting Driveway, Ottawa, ON, Canada K1A 0K9
| | - Amanda J MacFarlane
- Nutrition Research Division, Health Canada, 251 Promenade Sir Frederick Banting Driveway, Ottawa, ON, Canada K1A 0K9
| | - Jacquetta Trasler
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1.,Pharmacology & Therapeutics, 3655 Prom. Sir William Osler, Montreal, QC, Canada H3G 1Y6
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Yuan HF, Zhao K, Zang Y, Liu CY, Hu ZY, Wei JJ, Zhou T, Li Y, Zhang HP. Effect of folate deficiency on promoter methylation and gene expression of Esr1, Cav1, and Elavl1, and its influence on spermatogenesis. Oncotarget 2018; 8:24130-24141. [PMID: 28445960 PMCID: PMC5421833 DOI: 10.18632/oncotarget.15731] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/08/2017] [Indexed: 11/25/2022] Open
Abstract
This study aims to investigate the effect of folate deficiency on the male reproductive function and the underlying mechanism. A total of 269 screened participants from 421 recruitments were enrolled in this study. An animal model of folate deficiency was constructed. Folate concentration was measured in the ejaculate, and its association with semen parameters was then determined. The expression and promoter methylation status of ESR1, CAV1, and ELAVL1 were also evaluated. Results showed that seminal plasma folate level was significantly lower among subjects with azoospermia than those with normozoospermia. Low folate level was significantly correlated with low sperm concentration in men with normozoospermia. Folate deficiency significantly reduced the expression of ESR1, CAV1, and ELAVL1, which are critical to spermatogenesis. However, low folate levels did not increase the methylation levels of the promoter regions of ESR1, CAV1, and ELAVL1 in human sperm DNA. Thus, folate deficiency impairs spermatogenesis may partly due to inhibiting the expression of these genes. Thus future research should determine the significance of sufficient folate status in male fertilization and subsequent pregnancy outcomes.
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Affiliation(s)
- Hong-Fang Yuan
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Center of Human Reproduction, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Zang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun-Yan Liu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi-Yong Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia-Jing Wei
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Zhou
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Li
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui-Ping Zhang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Center of Human Reproduction, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Shadmehr S, Fatemi Tabatabaei SR, Hosseinifar S, Tabandeh MR, Amiri A. Attenuation of heat stress-induced spermatogenesis complications by betaine in mice. Theriogenology 2017; 106:117-126. [PMID: 29049923 DOI: 10.1016/j.theriogenology.2017.10.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 12/20/2022]
Abstract
High temperatures can induce oxidative stress, impairment of spermatogenesis, and reduction of sperm quality and quantity concomitant with transient periods of partial or complete infertility in male mammals. Promising beneficial effects of betaine supplementation on the epididymal spermatozoa have been reported in experimental studies; however, its effects on testicular heat stress (HS)-induced impairment have yet to be determined. In the present study, betaine (Bet) was orally administrated (250 mg/kg day) during a 14-day period, before (Bet + HS group) or after (HS + Bet group) induction of testicular HS in 7-9 week-old male mice. HS was induced by testicular immersion in water at 42 °C in stress groups. Epididymal spermatozoa and testes were collected at days 14 and 28 after HS induction in order to analyze sperm characteristics, testicular oxidative status, and histological changes. Our studies showed that HS reduced testicular weight, the quality and quantity of epididymal spermatozoa, and impaired maturation of germinal cells. The levels of MDA, catalase, SOD, and GPX were increased in the testes of HS-induced mice (P < 0.01). Although betaine treatment before and after exposure to HS enhanced antioxidant defense (P < 0.05) and accelerated germinal epithelium regeneration, its effects on the characteristics of epididymal spermatozoa were scarce. On the other hand, in the absence of heat stress, quality and quantity of epididymal spermatozoa were improved following 14 days of betaine consumption. Our study revealed the beneficial effect of betaine on HS-induced complications of spermatogenesis, as well as its potency to improve epididymal spermatozoa in intact mice.
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Affiliation(s)
- Somayeh Shadmehr
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | | | - Shima Hosseinifar
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Tabandeh
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Alireza Amiri
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Parental Genetic Variants, MTHFR 677C>T and MTRR 66A>G, Associated Differently with Fetal Congenital Heart Defect. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3043476. [PMID: 28758112 PMCID: PMC5512027 DOI: 10.1155/2017/3043476] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 05/09/2017] [Indexed: 11/17/2022]
Abstract
Background Congenital heart defect (CHD) is one of the most common birth defects in the world. The methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) genes are two of the most important candidate genes for fetal CHD. However, the correlations between the two genes and fetal CHD were inconsistent in various reports. Therefore, this study is aimed to evaluate the parental effects of the two genes on fetal CHD via three genetic polymorphisms, MTHFR 677C>T (rs1801133), MTHFR 1298 A>C (rs1801131), and MTRR 66A>G (rs1801394). Methods Parents with pregnancy history of fetal CHD were divided into two subgroups: ventricular septal defect (VSD) (21) and non-VSD groups (78). VSD, non-VSD, and 114 control parents (controls) were analyzed in this study. Genotyping of these genetic polymorphisms was done by sequencing. Results The MTHFR 677C>T polymorphism of either mothers or fathers was independently associated with fetal non-VSD (P < 0.05) but not VSD, while the MTRR 66A>G polymorphism was independently associated with fetal VSD (P < 0.05) but not non-VSD. No significance was found for MTHFR 1298A>C polymorphism. Conclusion In either maternal or paternal group, the MTHFR 677C>T polymorphism was independently related to fetal non-VSD, while the MTRR 66A>G polymorphism was independently related to fetal VSD.
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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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Karimian M, Hosseinzadeh Colagar A. Human MTHFR-G1793A transition may be a protective mutation against male infertility: a genetic association study and in silico analysis. HUM FERTIL 2017; 21:128-136. [DOI: 10.1080/14647273.2017.1298161] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mohammad Karimian
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
| | - Abasalt Hosseinzadeh Colagar
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
- Nano and Biotechnology Research Group, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
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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] [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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Effect of natural betaine on estimates of semen quality in mature AI boars during summer heat stress. Anim Reprod Sci 2016; 170:25-37. [DOI: 10.1016/j.anireprosci.2016.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/16/2016] [Accepted: 03/18/2016] [Indexed: 01/22/2023]
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Mutation Update and Review of Severe Methylenetetrahydrofolate Reductase Deficiency. Hum Mutat 2016; 37:427-38. [DOI: 10.1002/humu.22970] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 02/03/2016] [Indexed: 11/07/2022]
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Gunes S, Arslan MA, Hekim GNT, Asci R. The role of epigenetics in idiopathic male infertility. J Assist Reprod Genet 2016; 33:553-569. [PMID: 26941097 DOI: 10.1007/s10815-016-0682-8] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/22/2016] [Indexed: 12/17/2022] Open
Abstract
Infertility is a complex disorder with multiple genetic and environmental causes. Although some specific mutations have been identified, other factors responsible for sperm defects remain largely unknown. Despite considerable efforts to identify the pathophysiology of the disease, we cannot explain the underlying mechanisms of approximately half of infertility cases. This study reviews current data on epigenetic regulation and idiopathic male infertility. Recent data have shown an association between epigenetic modifications and idiopathic infertility. In this regard, epigenetics has emerged as one of the promising research areas in understanding male infertility. Many studies have indicated that epigenetic modifications, including DNA methylation in imprinted and developmental genes, histone tail modifications and short non-coding RNAs in spermatozoa may have a role in idiopathic male infertility.
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Affiliation(s)
- Sezgin Gunes
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayis University, 55139, Samsun, Turkey.
- Health Sciences Institute, Department of Multidisciplinary Molecular Medicine, Ondokuz Mayis University, 55139, Samsun, Turkey.
| | - Mehmet Alper Arslan
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayis University, 55139, Samsun, Turkey.
- Health Sciences Institute, Department of Multidisciplinary Molecular Medicine, Ondokuz Mayis University, 55139, Samsun, Turkey.
| | | | - Ramazan Asci
- Health Sciences Institute, Department of Multidisciplinary Molecular Medicine, Ondokuz Mayis University, 55139, Samsun, Turkey
- Faculty of Medicine, Department of Urology, Ondokuz Mayis University, 55139, Samsun, Turkey
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Aitken RJ, Flanagan HM, Connaughton H, Whiting S, Hedges A, Baker MA. Involvement of homocysteine, homocysteine thiolactone, and paraoxonase type 1 (
PON
‐1) in the etiology of defective human sperm function. Andrology 2016; 4:345-60. [DOI: 10.1111/andr.12157] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 12/06/2015] [Accepted: 12/12/2015] [Indexed: 01/01/2023]
Affiliation(s)
- R. J. Aitken
- Priority Research Centre for Reproductive Science Discipline of Biological Sciences Faculty of Science and IT and Hunter Medical Institute University of Newcastle CallaghanNSW Australia
| | - H. M. Flanagan
- Priority Research Centre for Reproductive Science Discipline of Biological Sciences Faculty of Science and IT and Hunter Medical Institute University of Newcastle CallaghanNSW Australia
| | - H. Connaughton
- Priority Research Centre for Reproductive Science Discipline of Biological Sciences Faculty of Science and IT and Hunter Medical Institute University of Newcastle CallaghanNSW Australia
| | - S. Whiting
- Priority Research Centre for Reproductive Science Discipline of Biological Sciences Faculty of Science and IT and Hunter Medical Institute University of Newcastle CallaghanNSW Australia
| | - A. Hedges
- Hunter IVF John Hunter Hospital New Lambton Heights NSW Australia
| | - M. A. Baker
- Priority Research Centre for Reproductive Science Discipline of Biological Sciences Faculty of Science and IT and Hunter Medical Institute University of Newcastle CallaghanNSW Australia
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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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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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Tahmasbpour E, Balasubramanian D, Agarwal A. A multi-faceted approach to understanding male infertility: gene mutations, molecular defects and assisted reproductive techniques (ART). J Assist Reprod Genet 2014; 31:1115-37. [PMID: 25117645 PMCID: PMC4156950 DOI: 10.1007/s10815-014-0280-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/16/2014] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The assisted reproductive techniques aimed to assist infertile couples have their own offspring carry significant risks of passing on molecular defects to next generations. RESULTS Novel breakthroughs in gene and protein interactions have been achieved in the field of male infertility using genome-wide proteomics and transcriptomics technologies. CONCLUSION Male Infertility is a complex and multifactorial disorder. SIGNIFICANCE This review provides a comprehensive, up-to-date evaluation of the multifactorial factors involved in male infertility. These factors need to be first assessed and understood before we can successfully treat male infertility.
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Affiliation(s)
| | | | - Ashok Agarwal
- />Center for Reproductive Medicine, Cleveland Clinic, 44195 Cleveland, OH USA
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Y-chromosome microdeletions and the MTHFR C677T polymorphism in Egyptian men with nonobstructive azoospermia. ACTA ACUST UNITED AC 2014. [DOI: 10.1097/01.xha.0000452307.44279.f9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lambrot R, Xu C, Saint-Phar S, Chountalos G, Cohen T, Paquet M, Suderman M, Hallett M, Kimmins S. Low paternal dietary folate alters the mouse sperm epigenome and is associated with negative pregnancy outcomes. Nat Commun 2014; 4:2889. [PMID: 24326934 PMCID: PMC3863903 DOI: 10.1038/ncomms3889] [Citation(s) in RCA: 288] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 11/07/2013] [Indexed: 01/20/2023] Open
Abstract
Epidemiological studies suggest that a father's diet can influence offspring health. A proposed mechanism for paternal transmission of environmental information is via the sperm epigenome. The epigenome includes heritable information such as DNA methylation. We hypothesize that the dietary supply of methyl donors will alter epigenetic reprogramming in sperm. Here we feed male mice either a folate-deficient or folate-sufficient diet throughout life. Paternal folate deficiency is associated with increased birth defects in the offspring, which include craniofacial and musculoskeletal malformations. Genome-wide DNA methylation analysis and the subsequent functional analysis identify differential methylation in sperm of genes implicated in development, chronic diseases such as cancer, diabetes, autism and schizophrenia. While >300 genes are differentially expressed in offspring placenta, only two correspond to genes with differential methylation in sperm. This model suggests epigenetic transmission may involve sperm histone H3 methylation or DNA methylation and that adequate paternal dietary folate is essential for offspring health.
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Affiliation(s)
- R Lambrot
- 1] Department of Animal Science, McGill University, Ste Anne-de-Bellevue, Québec H9X3V9, Canada [2]
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Jena SC, Kumar S, Rajput S, Roy B, Verma A, Kumaresan A, Mohanty TK, De S, Kumar R, Datta TK. Differential methylation status of IGF2-H19
locus does not affect the fertility of crossbred bulls but some of the CTCF binding sites could be potentially important. Mol Reprod Dev 2014; 81:350-62. [DOI: 10.1002/mrd.22303] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 01/14/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Subas C. Jena
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Sandeep Kumar
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Sandeep Rajput
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Bhaskar Roy
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Arpana Verma
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Arumugam Kumaresan
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Tushar K. Mohanty
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Sachinandan De
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Rakesh Kumar
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - Tirtha K. Datta
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
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