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Córdova-Oriz I, Polonio AM, Cuadrado-Torroglosa I, Chico-Sordo L, Medrano M, García-Velasco JA, Varela E. Chromosome ends and the theory of marginotomy: implications for reproduction. Biogerontology 2024; 25:227-248. [PMID: 37943366 DOI: 10.1007/s10522-023-10071-w] [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: 07/26/2023] [Accepted: 09/21/2023] [Indexed: 11/10/2023]
Abstract
Telomeres are the protective structures located at the ends of linear chromosomes. They were first described in the 1930s, but their biology remained unexplored until the early 70s, when Alexey M. Olovnikov, a theoretical biologist, suggested that telomeres cannot be fully copied during DNA replication. He proposed a theory that linked this phenomenon with the limit of cell proliferation capacity and the "duration of life" (theory of marginotomy), and suggested a potential of telomere lenghthening for the prevention of aging (anti-marginotomy). The impact of proliferative telomere shortening on life expectancy was later confirmed. In humans, telomere shortening is counteracted by telomerase, an enzyme that is undetectable in most adult somatic cells, but present in cancer cells and adult and embryonic stem and germ cells. Although telomere length dynamics are different in male and female gametes during gametogenesis, telomere lengths are reset at the blastocyst stage, setting the initial length of the species. The role of the telomere pathway in reproduction has been explored for years, mainly because of increased infertility resulting from delayed childbearing. Short telomere length in ovarian somatic cells is associated to decreased fertility and higher aneuploidy rates in embryos. Consequently, there is a growing interest in telomere lengthening strategies, aimed at improving fertility. It has also been observed that lifestyle factors can affect telomere length and improve fertility outcomes. In this review, we discuss the implications of telomere theory in fertility, especially in oocytes, spermatozoa, and embryos, as well as therapies to enhance reproductive success.
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Affiliation(s)
- Isabel Córdova-Oriz
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
| | - Alba M Polonio
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
| | - Isabel Cuadrado-Torroglosa
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
| | - Lucía Chico-Sordo
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
| | - Marta Medrano
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
| | - Juan A García-Velasco
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
- IVIRMA Global Research Alliance, IVIRMA Madrid, Madrid, Spain
- Department of Medical Specialties and Public Health, Edificio Departamental II, Rey Juan Carlos University, Av. de Atenas, s/n, 28922, Alcorcón, Madrid, Spain
| | - Elisa Varela
- IVIRMA Global Research Alliance, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain.
- Department of Medical Specialties and Public Health, Edificio Departamental II, Rey Juan Carlos University, Av. de Atenas, s/n, 28922, Alcorcón, Madrid, Spain.
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Yin L, Jiang N, Li T, Zhang Y, Yuan S. Telomeric function and regulation during male meiosis in mice and humans. Andrology 2024. [PMID: 38511802 DOI: 10.1111/andr.13631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 02/26/2024] [Accepted: 03/03/2024] [Indexed: 03/22/2024]
Abstract
BACKGROUND Telomeres are unique structures situated at the ends of chromosomes. Preserving the structure and function of telomeres is essential for maintaining genomic stability and promoting genetic diversity during male meiosis in mammals. MATERIAL-METHODS This review compiled recent literature on the function and regulation of telomeres during male meiosis in both mice and humans, and also highlighted the critical roles of telomeres in reproductive biology and medicine. RESULTS-DISCUSSION Various structures, consisting of the LINC complex (SUN-KASH), SPDYA-CDK2, TTM trimer (TERB1-TERB2-MAJIN), and shelterin, are critical in controlling telomeric activities, such as nuclear envelope attachment and bouquet formation. Other than telomere-related proteins, cohesins and genes responsible for regulating telomere function are also highlighted, though the exact mechanism remains unclear. The gene-mutant mouse models with meiotic defects directly reveal the essential roles of telomeres in male meiosis. Recently reported mutant genes associated with telomere activity in clinical practice have also been illustrated in detail. CONCLUSIONS Proper regulation of telomere activities is essential for male meiosis progression in mice and humans.
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Affiliation(s)
- Lisha Yin
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nan Jiang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Li
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Youzhi Zhang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning, China
| | - Shuiqiao Yuan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Laboratory of Animal Center, Huazhong University of Science and Technology, Wuhan, China
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Margiana R, Gupta R, Al-Jewari WM, Hjazi A, Alsaab HO, Mustafa YF, Singh R, Thaibt R, Alkhayyat S, Ibrahim AJ. Evaluation of telomere length, reactive oxygen species, and apoptosis in spermatozoa of patients with oligospermia. Cell Biochem Funct 2024; 42:e3935. [PMID: 38379260 DOI: 10.1002/cbf.3935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 02/22/2024]
Abstract
50% of cases of infertility are caused by male factor, which acquired or congenital problems may bring on. Male infertility can be caused by oligospermia and asthenozoospermia, which are common. Since the same mutations that cause azoospermia in some people also cause oligozoospermia in others, oligozoospermia may be thought of as a less severe form of azoospermia. Studies have demonstrated telomere length, catalase activity, super oxide dismutase (SOD), and DNA fragmentation can be influential factors for male infertility. The amount of apoptosis, oxidative stress factors, telomere length, and DNA fragmentation were some aspects of healthy sperm that we chose to look into in this study and compare to oligospermia individuals. Oligospermia patients (n = 24) and fertile men (n = 27) semen samples were collected, and the apoptosis rate of sperms in both groups was analyzed (Flow cytometry). Also, gene expression of apoptotic and antiapoptotic markers and telomere length were examined (real-time polymerase chain reaction). The sperm DNA fragmentation kit was used to determine DNA fragmentation and to evaluate catalase and SOD activity; the specific kits and methods were utilized. Higher expression levels of caspase3 (p = .0042), caspase8 (p = .0145), caspase9 (p = .0275), and BAX (p = .0202) mRNA were observed in patients who had oligospermia. In contrast, lower mRNA expression of BCL-2 (p = .0009) was detected in this group. In addition, telomere length was decreased in the oligospermia group (p < .0001) compared to the health group. Moreover, the frequency of apoptosis is induced in patients (p = .0026). The catalase activity is low (p = .0008), but the SOD activity is high (p = .0015) in the patient group. As a result of our findings, we may list the sperm cell apoptosis rate, telomere length, the degree of sperm DNA fragmentation, and lastly, the measurement of significant and efficient oxidative stress markers like SOD and catalase in semen plasma among the principal diagnostic characteristics for oligospermia. Future studies will be better able to treat oligospermia by showing whether these indicators are rising or falling.
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Affiliation(s)
- Ria Margiana
- Department of Anatomy, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Master's Programme Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Andrology Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Reena Gupta
- Institute of Pharmaceutical Research, GLA University, Bharthia, India
| | | | - Ahmed Hjazi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Hashem O Alsaab
- Pharmaceutics and Pharmaceutical Technology, Taif University, Taif, Saudi Arabia
| | | | - Rajesh Singh
- Uttaranchal Institute of Technology, Uttaranchal University, Dehradun, India
| | - Ruiscul Thaibt
- Medical Technical College, Al-Farahidi University, Baghdad, Iraq
| | - Safa Alkhayyat
- College of Pharmacy, The Islamic University, Najaf, Iraq
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Fernández de la Puente M, Salas-Huetos A, Valle-Hita C, Babio N, Murphy MM, Canudas S, Salas-Salvadó J. Is telomere length a biomarker of sperm quality? A systematic review and meta-analysis of observational studies. Andrology 2024; 12:277-288. [PMID: 37328426 DOI: 10.1111/andr.13482] [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: 03/29/2023] [Revised: 05/18/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Telomeres are essential for the integrity of chromosome ends during cell division and their involvement in different processes linked to aging has been established. These chromosome components are involved in spermatogenesis and seem to play an important role in fertilization and embryo development. Telomere length is shortened with each cell division. Recently, short sperm telomere length has been proposed as a potential biomarker of male infertility. OBJECTIVES To conduct a systematic review and meta-analysis of studies exploring the association between spermatozoa and/or leukocyte telomere length with sperm quality parameters and different infertility conditions. MATERIAL AND METHODS A systematic review and meta-analysis was conducted with studies from Medline-PUBMED and Cochrane Library databases until May 2022. Eligible studies included cohort, cross-sectional and case-control studies, and telomere length in spermatozoa and/or leukocytes cells was defined as the exposure. Semen quality parameters or infertility conditions (e.g., oligozoospermia, asthenozoospermia, teratozoospermia, or other spermatogenic impairment combinations) were defined as the outcomes. RESULTS Twenty-three observational studies were included. In the qualitative analysis, high heterogeneity was observed between studies regarding the associations between telomere length and semen parameters in different normozoospermic/fertile and oligozoospermic/infertile populations. In the meta-analysis, spermatozoa and leukocyte telomere length were shorter in infertile individuals than in fertile individuals (mean difference [95% confidence interval]: -1.43 [-1.66 to -1.21], p-value <0.001 and -1.67 [-2.02 to -1.31], p-value <0.001, respectively). Moreover, in terms of sperm telomere length, these differences were also significant between individuals with a normal seminogram and individuals with a low quantity of spermatozoa in the ejaculate (-0.97 [-1.32, -0.61], p-value <0.001). CONCLUSION The current systematic review and meta-analysis suggests the potential role of spermatozoa or leukocyte telomere length as a reliable biomarker of semen quality, which may help distinguish between infertility conditions beyond the routine semen analysis.
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Affiliation(s)
- María Fernández de la Puente
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Grup ANUT-DSM, Reus, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
| | - Albert Salas-Huetos
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
- Universitat Rovira i Virgili, Departament de Ciències Mèdiques Bàsiques, Unit of Preventive Medicine and Public Health, Grup ANUT-DSM, Reus, Spain
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Cristina Valle-Hita
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Grup ANUT-DSM, Reus, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
| | - Nancy Babio
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Grup ANUT-DSM, Reus, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
| | - Michelle M Murphy
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
- Universitat Rovira i Virgili, Departament de Ciències Mèdiques Bàsiques, Unit of Preventive Medicine and Public Health, Grup ANUT-DSM, Reus, Spain
| | - Silvia Canudas
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, Santa Coloma de Gramenet, Spain
- Institute of Nutrition and Food Safety, University of Barcelona, Santa Coloma de Gramenet, Spain
| | - Jordi Salas-Salvadó
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Grup ANUT-DSM, Reus, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
- Institut d'Investigació Sanitària Pere Virgili, Hospital Universitari San Joan de Reus, Reus, Spain
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Randell Z, Dehghanbanadaki H, Fendereski K, Jimbo M, Aston K, Hotaling J. Sperm telomere length in male-factor infertility and reproduction. Fertil Steril 2024; 121:12-25. [PMID: 37949346 DOI: 10.1016/j.fertnstert.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
The underlying reasons for male-factor infertility are often unknown. 30% of all men have unexplained semen analysis abnormalities. Moreover, 15%-40% of infertile men have normal semen analyses. There have been increasing efforts to identify causes and associations that may explain idiopathic male-factor infertility. Telomeres have become an area of considerable interest in the field because of the essential roles they have in cellular division and genome integrity. Research to date most consistently supports that men with infertility have shorter sperm telomere length (STL); however, associations between shorter STL and meaningful reproductive health outcomes are less consistent. There is a major need for additional studies to better identify the role of STL in male reproductive health and use the information to improve the counseling and treatment of couples with idiopathic male-factor infertility.
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Affiliation(s)
- Zane Randell
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah.
| | - Hojat Dehghanbanadaki
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Kiarad Fendereski
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Masaya Jimbo
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Kenneth Aston
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - James Hotaling
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
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Fattet AJ, Chaillot M, Koscinski I. Telomere Length, a New Biomarker of Male (in)Fertility? A Systematic Review of the Literature. Genes (Basel) 2023; 14:425. [PMID: 36833352 PMCID: PMC9957201 DOI: 10.3390/genes14020425] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/26/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open
Abstract
Male factors are suspected in around half cases of infertility, of which up to 40% are diagnosed as idiopathic. In the context of a continuously increased resort to ART and increased decline of semen parameters, it is of greatest interest to evaluate an additional potential biomarker of sperm quality. According to PRISMA guidelines, this systematic review of the literature selected studies evaluating telomere length in sperm and/or in leukocytes as a potential male fertility biomarker. Twenty-two publications (3168 participants) were included in this review of experimental evidence. For each study, authors determined if there was a correlation between telomere length and semen parameters or fertility outcomes. Of the 13 studies concerning sperm telomere length (STL) and semen parameters, ten found an association between short STL and altered parameters. Concerning the impact of STL on ART results, the data are conflicting. However, eight of the 13 included studies about fertility found significantly longer sperm telomeres in fertile men than in infertile men. In leukocytes, the seven studies reported conflicting findings. Shorter sperm telomeres appear to be associated with altered semen parameters or male infertility. Telomere length may be considered as a new molecular marker of spermatogenesis and sperm quality, and thus is related to male fertility potential. However, additional studies are needed to define the place of the STL in the assessment of individual fertility.
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Affiliation(s)
- Anne-Julie Fattet
- Centre d’AMP Majorelle-Atoutbio, 95 Rue Ambroise Paré, 54000 Nancy, France
| | - Maxime Chaillot
- Service de Médecine et Biologie du Développement et de la Reproduction, 38 Boulevard Jean Monnet, 44000 Nantes, France
- Faculté de Médecine, Université de Nantes, 44000 Nantes, France
| | - Isabelle Koscinski
- Inserm U1256, Nutrition Genetics Environmental Risks Exposure (NGERE), Université de Lorraine, 54000 Nancy, France
- Centre d’AMP Hôpital Saint Joseph, 26 Bd de Louvain, 13008 Marseille, France
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Liu C, Chen YJ, Sun B, Chen HG, Mustieles V, Messerlian C, Sun Y, Meng TQ, Lu WQ, Pan XF, Xiong CL, Hou J, Wang YX. Blood trihalomethane concentrations in relation to sperm mitochondrial DNA copy number and telomere length among 958 healthy men. ENVIRONMENTAL RESEARCH 2023; 216:114737. [PMID: 36372149 DOI: 10.1016/j.envres.2022.114737] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/19/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND In animal and human studies, exposure to trihalomethanes (THMs) has been associated with reduced semen quality. However, the underlying mechanisms remain poorly understood. OBJECTIVE To investigate the associations of blood THM concentrations with sperm mitochondrial DNA copy number (mtDNAcn) and telomere length (TL) among healthy men. METHODS We recruited 958 men who volunteered as potential sperm donors. A single blood sample was collected from each participant at recruitment and measured for chloroform (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM), and bromoform (TBM) concentrations. Within a 90-day follow-up, the last semen sample provided by each participant was quantified for sperm mtDNAcn and TL. We used multivariable linear regression models to assess the associations between blood THM concentrations and sperm mtDNAcn and TL. We also performed stratified analyses according to the time intervals between baseline blood THM determinations and semen collection (i.e., 0-9, 10-14, 15-69, or >69 days) to explore potential windows of susceptibility. RESULTS After adjusting for potential confounders, we found inverse associations between quartiles (or categories) of blood TBM, brominated THM (Br-THM, the sum of BDCM, DBCM, and TBM), and total THM (TTHM, the sum of all four THMs) concentrations and sperm mtDNAcn (all P for trend≤0.03). Besides, we found inverse associations between quartiles of blood TCM, Br-THM, chlorinated THM (Cl-THM, the sum of TCM, BDCM, and DBCM), and TTHM concentrations and sperm TL (all P for trend<0.10). Stratified analyses showed stronger associations between Br-THM concentrations and sperm mtDNAcn determined 15-69 days since baseline exposure determinations, and between blood TCM and TTHM concentrations and sperm TL determined >69 days since baseline exposure determinations. CONCLUSION Exposure to THMs may be associated with sperm mitochondrial and telomeric dysfunction.
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Affiliation(s)
- Chong Liu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Ying-Jun Chen
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, PR China
| | - Bin Sun
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Heng-Gui Chen
- Clinical Research and Translation Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, PR China
| | - Vicente Mustieles
- University of Granada, Center for Biomedical Research (CIBM); Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Madrid, Spain
| | - Carmen Messerlian
- Department of Epidemiology and Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Yang Sun
- Department of Epidemiology and Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Tian-Qing Meng
- Hubei Province Human Sperm Bank, Center of Reproductive Medicine, Wuhan Tongji Reproductive Medicine Hospital, Wuhan, PR China
| | - Wen-Qing Lu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xiong-Fei Pan
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, PR China
| | - Chen-Liang Xiong
- Hubei Province Human Sperm Bank, Center of Reproductive Medicine, Wuhan Tongji Reproductive Medicine Hospital, Wuhan, PR China.
| | - Jian Hou
- Department of Epidemiology and Biostatistics, School of Public Health, Zhengzhou University, Zhengzhou, PR China.
| | - Yi-Xin Wang
- Department of Epidemiology and Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
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Sharqawi M, Hantisteanu S, Bilgory A, Aslih N, Shibli Abu Raya Y, Atzmon Y, Estrada D, Limonad O, Meisel-Sharon S, Shalom-Paz E. The Impact of Lifestyle on Sperm Function, Telomere Length, and IVF Outcomes. Am J Mens Health 2022; 16:15579883221119931. [PMID: 36121249 PMCID: PMC9490467 DOI: 10.1177/15579883221119931] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Many risk factors can potentially influence sperm quality. Telomeres confer stability on the chromosome and their dysfunction has been implicated in conditions such as cancer, aging, and lifestyle. The impact of lifestyle on sperm cell telomeres is unclear. The objectives of this study were to evaluate the impact of lifestyle behaviors on telomere length in sperm and to follow the correlation with pregnancy outcomes in patients undergoing in vitro fertilization (IVF). In this prospective observational study, sperm was analyzed for telomere length (TL). Men were asked to report lifestyle behaviors including occupation (physical or sedentary), smoking duration and amount, physical activity, dietary habits, and where they keep their cellular phone (bag, pants, or shirt pocket). Correlations among semen analysis, TL, men's habits, and embryo quality and pregnancy outcomes were evaluated. Among 34 patients recruited, 12 had longer TL and 13 shorter TL. Sperm motility was negatively correlated with TL (Pearson correlation = -.588, p = .002). Smoking adversely affected native sperm motility (53% motility in nonsmokers vs. 37% in smokers; p = .006). However, there was no significant impact on TL. The group with longer telomeres demonstrated significant association with healthy diet (10/12 vs. 6/13; p = .05) and a trend toward more sports activity, weekly (16/84 vs. 7/91; p = .04) compared with the shorter telomeres group. This study suggests that lifestyle, healthy diet, and sports activity are associated with long telomeres in sperm. Sperm quality is also influenced by patients' habits. The study strongly recommends maintaining a healthy lifestyle to preserve general health and fertility.
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Affiliation(s)
- Moamina Sharqawi
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Shay Hantisteanu
- Gynecological Research Laboratory, Hillel Yaffe Medical Center, Hadera, Israel
| | - Asaf Bilgory
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Nardin Aslih
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Yasmin Shibli Abu Raya
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Yuval Atzmon
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Daniela Estrada
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Ofer Limonad
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel
| | | | - Einat Shalom-Paz
- IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hadera, Israel,Ruth and Bruce Rappaport School of Medicine, The Technion Institute of Technology, Haifa, Israel,Einat Shalom-Paz, Director of IVF Unit, Department of Obstetrics & Gynecology, Hillel Yaffe Medical Center, Hashalom St., Hadera 38100, Israel.
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Abstract
PURPOSE OF REVIEW Women's fertility decay starts at the mid 30 s. However, the current delay of childbearing leads to ovarian aging and the need of assisted reproduction technologies (ART). Telomere biology is one of the main pathways involved in organismal aging. Thus, this review will focus on the knowledge acquired during the last 2 years about the telomere pathway and its influence on female fertility and the consequences for the newborn. RECENT FINDINGS New research on telomere biology reaffirms the relationship of telomere attrition and female infertility. Shorter maternal telomeres, which could be aggravated by external factors, underly premature ovarian aging and other complications including preeclampsia, preterm birth and idiopathic pregnancy loss. Finally, the telomere length of the fetus or the newborn is also affected by external factors, such as stress and nutrition. SUMMARY Recent evidence shows that telomeres are implicated in most processes related to female fertility, embryo development and the newborn's health. Thus, telomere length and telomerase activity may be good biomarkers for early detection of ovarian and pregnancy failures, opening the possibility to use telomere therapies to try to solve the infertility situation.
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