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Cannarella R, Shah R, Saleh R, Boitrelle F, Hamoda TAAAM, Singh R, Salvio G, Toprak T, Falcone M, Gul M, Dimitriadis F, Rambhatla A, Russo GI, Ko E, Zini A, Kavoussi P, Phuoc NHV, Kandil H, Ghayda RA, Birowo P, Gherabi N, Ceyhan E, Dong J, Malhotra V, Durairajanayagam D, Kolbasi B, Bahar F, Calik G, Çayan S, Pinggera GM, Calogero AE, Rajmil O, Mostafa T, Atmoko W, Harraz AM, Le TV, de la Rosette J, Hakim L, Pescatori E, Sergeyev O, Rashed A, Saini P, Agarwal A. Effects of Varicocele Repair on Sperm DNA Fragmentation and Seminal Malondialdehyde Levels in Infertile Men with Clinical Varicocele: A Systematic Review and Meta-Analysis. World J Mens Health 2024; 42:321-337. [PMID: 38164034 PMCID: PMC10949029 DOI: 10.5534/wjmh.230235] [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: 08/21/2023] [Revised: 08/25/2023] [Accepted: 09/14/2023] [Indexed: 01/03/2024] Open
Abstract
PURPOSE Varicoceles can be a source of elevated seminal oxidative stress (OS) and sperm DNA fragmentation (SDF). However, it remains unclear whether varicocele repair (VR) could reduce these parameters. This systematic review and meta-analysis (SRMA) aims to investigate the impact of VR on SDF and seminal malondialdehyde (MDA). MATERIALS AND METHODS A literature search was performed in Scopus, PubMed, Ovid, Embase, and Cochrane databases. This SRMA included randomized controlled trials and observational studies reporting the pre- and postoperative levels of SDF and seminal OS in infertile men with clinical varicocele that underwent VR. Subgroup analyses included techniques of VR and SDF testing. The effect size was expressed as standardized mean difference (SMD). RESULTS Out of 1,632 abstracts assessed for eligibility, 29 studies with 1,491 infertile men were included. The analysis showed a significant reduction in SDF after VR, compared to preoperative values (SMD -1.125, 95% confidence interval [CI] -1.410, -0.840; p<0.0001) with high inter-study heterogeneity (I²=90.965%). Reduction in SDF was evident with microsurgical technique and non-microsurgical inguinal approaches (SMD -1.014, 95% CI -1.263, -0.765; p<0.0001, and SMD -1.495, 95% CI -2.116, -0.873; p<0.0001), respectively. Reduction in SDF was significant irrespective of testing was done by sperm chromatin dispersion (SMD -2.197, 95% CI -3.187, -1.207; p<0.0001), sperm chromatin structure assay (SMD -0.857, 95% CI -1.156, -0.559; p<0.0001) or TUNEL (SMD -1.599, 95% CI -2.478, -0.719; p<0.0001). A significant decrease in seminal MDA levels was observed following VR (SMD -2.450, 95% CI -3.903 to -0.997, p=0.001) with high inter-study heterogeneity (I²=93.7%). CONCLUSIONS Using pre- and post-intervention data, this SRMA indicates a significant reduction in SDF and seminal MDA levels in infertile men with clinical varicocele treated with VR. These findings may have important implications for the future management of this selected group of infertile patients.
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Affiliation(s)
- Rossella Cannarella
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
- Global Andrology Forum, Moreland Hills, OH, USA
| | - Rupin Shah
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Lilavati Hospital and Research Centre, Mumbai, India
| | - Ramadan Saleh
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Florence Boitrelle
- Global Andrology Forum, Moreland Hills, OH, USA
- Reproductive Biology, Fertility Preservation, Andrology, CECOS, Poissy Hospital, Poissy, France
- Department of Biology, Reproduction, Epigenetics, Environment and Development, Paris Saclay University, UVSQ, INRAE, BREED, Jouy-en-Josas, France
| | - Taha Abo-Almagd Abdel-Meguid Hamoda
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Urology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Rajender Singh
- Global Andrology Forum, Moreland Hills, OH, USA
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | - Gianmaria Salvio
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Endocrinology, Polytechnic University of Marche, Ancona, Italy
| | - Tuncay Toprak
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Fatih Sultan Mehmet Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Marco Falcone
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Molinette Hospital, A.O.U. Città della Salute e della Scienza, University of Turin, Torino, Italy
| | - Murat Gul
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Selçuk University School of Medicine, Konya, Turkey
| | - Fotios Dimitriadis
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Amarnath Rambhatla
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Vattikuti Urology Institute, Henry Ford Health System, Detroit, MI, USA
| | - Giorgio I Russo
- Global Andrology Forum, Moreland Hills, OH, USA
- Urology Section, University of Catania, Catania, Italy
| | - Edmund Ko
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Loma Linda University Health, Loma Linda, CA, USA
| | - Armand Zini
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Surgery, McGill University, Montreal, QC, Canada
| | - Parviz Kavoussi
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Reproductive Urology, Austin Fertility & Reproductive Medicine/Westlake IVF, Austin, TX, USA
| | - Nguyen Ho Vinh Phuoc
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Andrology, Binh Dan Hospital, Ho Chi Minh City, Vietnam
- Department of Andrology and Nephro-Urology, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
| | - Hussein Kandil
- Global Andrology Forum, Moreland Hills, OH, USA
- Fakih IVF Fertility Center, Abu Dhabi, UAE
| | - Ramy Abou Ghayda
- Global Andrology Forum, Moreland Hills, OH, USA
- Urology Institute, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
| | - Ponco Birowo
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Cipto Mangunkusumo General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Nazim Gherabi
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Medicine, Algiers University, Algiers, Algeria
| | - Erman Ceyhan
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Faculty of Medicine, Baskent University, Ankara, Turkey
| | - Jie Dong
- Global Andrology Forum, Moreland Hills, OH, USA
- Reproductive Medical Center, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Vineet Malhotra
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, SCM Clinic and Hospital, New Delhi, India
| | - Damayanthi Durairajanayagam
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Physiology, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Selangor, Malaysia
| | - Bircan Kolbasi
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Histology and Embryology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Fahmi Bahar
- Global Andrology Forum, Moreland Hills, OH, USA
- Andrology Section, Siloam Sriwijaya Hospital, Palembang, Indonesia
| | - Gokhan Calik
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Istanbul Medipol University, Istanbul, Turkey
| | - Selahittin Çayan
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, University of Mersin School of Medicine, Mersin, Turkey
| | - Germar-Michael Pinggera
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Medical University Innsbruck, Innsbruck, Austria
| | - Aldo E Calogero
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
- Global Andrology Forum, Moreland Hills, OH, USA
| | - Osvaldo Rajmil
- Global Andrology Forum, Moreland Hills, OH, USA
- Andrology Department, Fundació Puigvert, Barcelona, Spain
- Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Taymour Mostafa
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Andrology, Sexology and STIs, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Widi Atmoko
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Cipto Mangunkusumo General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Ahmed M Harraz
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of General Surgery, Urology Unit, Farwaniya Hospital, Farwaniya, Kuwait
- Department of Urology, Sabah Al Ahmad Urology Center, Kuwait City, Kuwait
- Department of Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Tan V Le
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Andrology, Binh Dan Hospital, Ho Chi Minh City, Vietnam
- Department of Andrology and Nephro-Urology, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
| | - Jean de la Rosette
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Istanbul Medipol Mega University Hospital, Istanbul, Turkey
| | - Lukman Hakim
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, Universitas Airlangga Teaching Hospital, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Edoardo Pescatori
- Global Andrology Forum, Moreland Hills, OH, USA
- Andrology and Reproductive Medicine Unit, Next Fertility GynePro, Bologna, Italy
| | - Oleg Sergeyev
- Global Andrology Forum, Moreland Hills, OH, USA
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Genetics of Reproductive Disorders, Research Centre for Medical Genetics, Moscow, Russia
| | - Ayman Rashed
- Global Andrology Forum, Moreland Hills, OH, USA
- Department of Urology, 6th October University, Tanta, Egypt
| | - Pallavi Saini
- Global Andrology Forum, Moreland Hills, OH, USA
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | - Ashok Agarwal
- Global Andrology Forum, Moreland Hills, OH, USA
- Cleveland Clinic, Cleveland, OH, USA.
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Sharif FA, Ashour MJ, Abuwarda HN, Ismail S, Salem N, Suleiman R, Hassouna N. Antioxidant Genes Variants and Their Association with Sperm DNA Fragmentation. Biochem Genet 2024:10.1007/s10528-023-10559-7. [PMID: 38294591 DOI: 10.1007/s10528-023-10559-7] [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: 07/03/2023] [Accepted: 10/23/2023] [Indexed: 02/01/2024]
Abstract
Semen possesses a variety of antioxidant defense mechanisms which protect sperm DNA from the damaging effects of oxidative stress. Correlation between antioxidant genes variants and sperm DNA fragmentation (SDF) level is not sufficiently studied. Therefore, we investigated the association between several single nucleotide polymorphisms (SNPs): CYP1A1 (rs1048943A > G), CYP4F2 (rs2108622G > A), NRF2 (rs6721961C > A), PON1 (rs662A > G), NOS3 (rs1799983G > T), GSTM1 (null), CAT (rs1001179C > T), SOD2 (rs4880A > G), GSTP1 (rs1695A > G), PON2 (rs7493G > C), EPHX2 (rs1042064T > C), and AHR (rs2066853G > A) and elevated SDF. The study employed a case-control design where, the allele and genotype frequencies of the selected SNPs were compared between 75 semen samples with abnormal SDF (the cases) and 75 samples with normal SDF (the controls). DNA was extracted from the semen samples and allele-specific PCR (AS-PCR) was used for genotyping the SNPs. Relevant data were collected from the patients' records et al.-Basma Fertility Center. Suitable statistical tests and multifactorial dimensionality reduction (MDR) test were used to anticipate SNP-SNP interactions. Comparison of semen parameters revealed significant differences between cases and controls in terms of liquefaction time, sperm total motility, and normal form. Genotype frequencies of NOS3 G > T (GT), SOD2 A > G (AA and AG), EPHX2 T > C (CC and CT), and AHR G > A (GA and GG) were significantly different between cases and controls. Allele frequencies of SOD2 (G-allele), and EPHX2 (T-allele) also significantly varied between cases and controls. MDR analysis revealed that the NOS3, SOD2, and EPHX2 SNPs combination has the highest impact on SDF. The study findings suggest that genetic variations in genes involved antioxidant defenses contribute to abnormal SDF.
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Affiliation(s)
- Fadel A Sharif
- Department of Medical Laboratory Sciences-IUG, Gaza, Palestine
| | | | | | - Soher Ismail
- Department of Medical Laboratory Sciences-IUG, Gaza, Palestine
| | - Noor Salem
- Department of Medical Laboratory Sciences-IUG, Gaza, Palestine
| | - Raed Suleiman
- Department of Medical Laboratory Sciences-IUG, Gaza, Palestine
| | - Nora Hassouna
- Department of Medical Laboratory Sciences-IUG, Gaza, Palestine
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Naglot S, Thapliyal A, Tomar AK, Yadav S. Male Contributory Factors in Recurrent Pregnancy Loss. Reprod Sci 2023; 30:2107-2121. [PMID: 36792841 DOI: 10.1007/s43032-023-01192-1] [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: 10/13/2022] [Accepted: 02/05/2023] [Indexed: 02/17/2023]
Abstract
With 40% of idiopathic cases, recurrent pregnancy loss (RPL) is a problem of great concern for patients and clinicians. In addition to financial burden, it causes a lot of frustration and anxiety in affected couples. The primary objective of this review was to gain knowledge of recent advances in the field of recurrent pregnancy losses and to understand the role of male contributory factors in idiopathic cases. For a long time, researchers and clinicians were seeking an explanation for idiopathic RPL (iRPL) in females only; however, with recent advances in reproductive biology, the role of spermatozoa in early embryonic development has caught the attention of researchers. Clinically, only routine semen parameters and karyotyping are investigated in iRPL male partners, which seem to be insufficient in the present scenario, and thus, more information at the molecular level is required for a comprehensive understanding of iRPL. In concluding remarks, we suggest targeted multi-omics investigations in a large cohort to improve our understanding of the role of male contributory factors in iRPL.
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Affiliation(s)
- Sarla Naglot
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Ayushi Thapliyal
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Anil Kumar Tomar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Savita Yadav
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, 110029, India.
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Tomita K, Udayanga KGS, Satoh M, Hashimoto S, Morimoto Y. Relation between semen oxidative reduction potential in initial semen examination and IVF outcomes. Reprod Med Biol 2023; 22:e12501. [PMID: 36726595 PMCID: PMC9884324 DOI: 10.1002/rmb2.12501] [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: 10/12/2022] [Revised: 12/13/2022] [Accepted: 01/10/2023] [Indexed: 01/30/2023] Open
Abstract
Purpose The MiOXSYS system is a new technique to analyze the semen oxidative reduction potential (ORP) that may use to classify the level of sperm DNA integrity. It does not clearly explain how the semen ORP values could help to change the IVF outcomes. We have analyzed correlations between semen ORP value and the IVF results. Methods Four hundred and thirty couples were enrolled. The male counterparts were divided into two groups according to their semen ORP values and compared the fertilization rate, cell cleavage rate, and embryo quality, following the IVF procedures. The relations between ORP values and the clinical pregnancy, live birth, and abortion rates were analyzed. Results The ORP values show negative and positive correlations with some conventional semen parameters. The fertilization and the cleavage rate did not show any differences in those two groups, but the transferable embryo rate was significantly high in patients with high semen ORP. However, the patients with high ORP show a tendency to lower clinical pregnancy with a low abortion rate compared to the low ORP group. Conclusion The main purpose of measuring the ORP value in semen is still questionable and shows controversial results.
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Affiliation(s)
| | | | - Manabu Satoh
- HORAC Grand Front Osaka ClinicOsakaJapan,IVF Namba ClinicOsakaJapan
| | - Shu Hashimoto
- Osaka Metropolitan University Graduate School of MedicineOsakaJapan
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Comparison of sperm preparation methods to improve the recovery of mature spermatozoa in sub-fertile males. ZYGOTE 2022; 30:664-673. [PMID: 35799417 DOI: 10.1017/s0967199422000132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The integrity of chromatin in the spermatozoon is essential for reproductive outcome. The aim of this study was to evaluate the most effective and cost-effective method to reduce the percentage of spermatozoa with defects in chromatin decondensation for use in assisted reproductive technologies (ART) procedures. Sperm samples from 15 sub-fertile males were examined at CFA Naples to determine the sperm decondensation index (SDI), using the aniline blue test, before and after preparation, comparing density gradients with two different swim-up approaches. All three techniques led to a reduction in decondensed spermatozoa with no statistical difference (P > 0.05) between the control and the treated sperm. In contrast, we found a highly significant decrease in SDI (P < 0.01) after the two swim-up methods in all the samples, confirming the efficacy of these methods in lowering the percentage of chromatin compaction damage. There was no statistical difference between the two swim-up methods, however swim-up from the pellet led to improved count, motility and the percentage of normal condensed spermatozoa. We suggest that swim-up from the pellet be used in ART on sub-fertile males, both to reduce cell stress by multiple centrifugation and improve the recovery rate of mature spermatozoa.
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Ausejo R, Martínez JM, Mendoza N, Bolarin A, Tejedor MT, Falceto MV. Nuclear DNA Fragmentation in Boar Spermatozoa: Measurement Methods and Reproductive Performance Implications. Front Vet Sci 2022; 9:929858. [PMID: 35847654 PMCID: PMC9281558 DOI: 10.3389/fvets.2022.929858] [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: 04/27/2022] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
The aim of this research was to compare the different techniques to measure sperm nuclear DNA fragmentation (sDF) and to check its relations to boar reproductive value, classical spermiogram parameters, and reproductive results of the doses in sows. Sperm chromatin stability assay (SCSA), terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay, and sperm chromatin dispersion test (SCD, Halomax®) results were compared, finding a statistically significant correlation only between SCSA and TUNEL results. The fertility direct boar effect (DBE) index, calculated from the whole productive life of the boar, was not correlated (p > 0.05) with sDF (measured by any technique). Total or progressive sperm motility was not correlated with sDF, while it found a positive correlation between TUNEL measure and abnormal acrosomes (%) and between SCD measure and total sperm morphological abnormalities (%). No significant correlations were obtained between fertility or prolificacy results and sDF results with the different techniques. However, in the case of total born and SCSA measure, the correlation was close to significance (r partial = −0.095; p = 0.066), appointing to a tendency; as SCSA increases, the number of total piglets born decreases. In conclusion, although the different techniques for the sDF seem not to target exactly the same DNA events and the relationship between their values and the reproductive results and the classical spermiogram results is still to be elucidated, the studied sDF techniques may offer extra information that could be useful for the management of AI studs.
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Affiliation(s)
- Raquel Ausejo
- Department of Animal Pathology, Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zaragoza, Zaragoza, Spain
- Department of Biotechnology R&D, Magapor S.L., Ejea de los Caballeros, Spain
| | - Juan Manuel Martínez
- Department of Research and Development, CiencIAnova Magapor, Zaragoza, Spain
- *Correspondence: Juan Manuel Martínez
| | - Noelia Mendoza
- Department of Biotechnology R&D, Magapor S.L., Ejea de los Caballeros, Spain
| | - Alfonso Bolarin
- Department of Animal Pathology, Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zaragoza, Zaragoza, Spain
| | - M. Teresa Tejedor
- Department of Anatomy, Embryology and Genetics, CIBERCV, Faculty of Veterinary Medicine, University of Zaragoza, Zaragoza, Spain
| | - Maria Victoria Falceto
- Department of Animal Pathology, Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zaragoza, Zaragoza, Spain
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8
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Karavolos S. Sperm DNA Fragmentation. Semin Reprod Med 2021; 39:194-199. [PMID: 34662912 DOI: 10.1055/s-0041-1736261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Sperm DNA fragmentation refers to the accumulation of adducts as well as single- or double-strand DNA breaks and reflects the sperm DNA quality. Current data suggest that there are differences in sperm DNA quality among individuals with high or low fertility, and this observation has led to the idea that testing sperm DNA fragmentation could be a useful test of male fertility. However, sperm DNA fragmentation has become one of the most frequently debated topics in reproductive medicine, as there is no agreement about the optimal way to test for DNA fragmentation, the clinically significant level of sperm DNA fragmentation, as well as the best therapeutic options for infertile men. This article presents current evidence related to sperm DNA fragmentation and its role in managing male infertility.
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Affiliation(s)
- Stamatios Karavolos
- Department of Gynaecology, Salford Royal NHS Foundation Trust, Stott Lane, Manchester, United Kingdom
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Campos LGA, Requejo LC, Miñano CAR, Orrego JD, Loyaga EC, Cornejo LG. Correlation between sperm DNA fragmentation index and semen parameters in 418 men seen at a fertility center. JBRA Assist Reprod 2021; 25:349-357. [PMID: 33624489 PMCID: PMC8312297 DOI: 10.5935/1518-0557.20200079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Objective: Methods: Results: Conclusions:
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Affiliation(s)
- Láyonal Germán Acosta Campos
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
| | - Lissett Chiscul Requejo
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
| | - Carlos Antonio Rivas Miñano
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
| | - Jheny Díaz Orrego
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
| | - Elmer Chávez Loyaga
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
| | - Luis Gonzales Cornejo
- IN VITRO GESTAR Assisted Reproduction Center Chiclayo Perú IN VITRO GESTAR, Assisted Reproduction Center. Chiclayo, Perú
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Gajski G, Ravlić S, Godschalk R, Collins A, Dusinska M, Brunborg G. Application of the comet assay for the evaluation of DNA damage in mature sperm. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108398. [PMID: 34893163 DOI: 10.1016/j.mrrev.2021.108398] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/26/2021] [Accepted: 11/05/2021] [Indexed: 06/14/2023]
Abstract
DNA integrity is considered an important parameter of semen quality and is of significant value as a predictor of male fertility. Currently, there are several methods that can assess sperm DNA integrity. One such assay is the comet assay, or single-cell gel electrophoresis, which is a simple, sensitive, reliable, quick and low-cost technique that is used for measuring DNA strand breaks and repair at the level of individual cells. Although the comet assay is usually performed with somatic cells from different organs, the assay has the ability to detect genotoxicity in germ cells at different stages of spermatogenesis. Since the ability of sperm to remove DNA damage differs between the stages, interpretation of the results is dependent on the cells used. In this paper we give an overview on the use and applications of the comet assay on mature sperm and its ability to detect sperm DNA damage in both animals and humans. Overall, it can be concluded that the presence in sperm of significantly damaged DNA, assessed by the comet assay, is related to male infertility and seems to reduce live births. Although there is some evidence that sperm DNA damage also has a long-term impact on offspring's health, this aspect of DNA damage in sperm is understudied and deserves further attention. In summary, the comet assay can be applied as a useful tool to study effects of genotoxic exposures on sperm DNA integrity in animals and humans.
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Affiliation(s)
- Goran Gajski
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia.
| | - Sanda Ravlić
- University of Zagreb, Centre for Research and Knowledge Transfer in Biotechnology, Zagreb, Croatia
| | - Roger Godschalk
- Maastricht University, School for Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology & Toxicology, Maastricht, the Netherlands
| | - Andrew Collins
- University of Oslo, Institute of Basic Medical Sciences, Department of Nutrition, Oslo, Norway
| | - Maria Dusinska
- Norwegian Institute for Air Research (NILU), Department of Environmental Chemistry, Health Effects Laboratory, Kjeller, Norway
| | - Gunnar Brunborg
- Norwegian Institute of Public Health (NIPH), Section of Molecular Toxicology, Department of Environmental Health, Oslo, Norway
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Vaughan DA, Tirado E, Garcia D, Datta V, Sakkas D. DNA fragmentation of sperm: a radical examination of the contribution of oxidative stress and age in 16 945 semen samples. Hum Reprod 2021; 35:2188-2196. [PMID: 32976601 DOI: 10.1093/humrep/deaa159] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
STUDY QUESTION What is the relationship between sperm DNA fragmentation and oxidative stress (OS) with increasing male age? SUMMARY ANSWER Sperm DNA fragmentation increases with age and is likely related to both defective spermatogenesis and increasing OS levels. WHAT IS KNOWN ALREADY Sperm quality declines with age. The presence of DNA damage in a high fraction of spermatozoa from a raw semen sample is associated with lower male fertility in natural conception and intrauterine insemination. STUDY DESIGN, SIZE, DURATION A retrospective cohort study of 16 945 semen samples analysed at a single reference laboratory between January 2010 and December 2018. PARTICIPANTS/MATERIALS, SETTING, METHODS All males were undergoing an infertility evaluation. The cohort was divided into seven age categories: <30, 30-34, 35-39, 40-44, 45-49, 50 to <54 and ≥55 years. The mean age was 37.6 years (SD 6.8). Sperm DNA fragmentation index (DFI) and high DNA stainability (HDS) were calculated using flow cytometry. OS levels were measured using the oxidative stress adducts (OSA) test, by spectrophotometry. ANOVA with weighted polynomial contrast analysis was used to evaluate trends for DFI, OSA and HDS values across age categories. MAIN RESULTS AND THE ROLE OF CHANCE Mean DFI significantly increased across all age groups (Ptrend < 0.001). OSA was lowest in patients <30 years old (mean 3.6, SD 1.0) and also increased as age increased (Ptrend < 0.001). There was a statistically significant difference between age groups for each of the three parameters (P < 0.001). There was a significant linear trend for DFI, OSA and HDS across the seven age categories (P < 0.001). Among patients with high DFI, there was a decreasing age-dependent trend in the patients observed with high OSA (P < 0.001). LIMITATIONS, REASONS FOR CAUTION This is a retrospective study. All males included in the study were undergoing a work-up for infertility and may not be representative of a fertile population. Additional patient demographics and clinical data were not available. WIDER IMPLICATIONS OF THE FINDINGS DNA and/or oxidative damage in sperm may be just as important to understand as the chromosomal aberrations that are carried in the oocyte. Further studies are needed to evaluate the effect of advancing paternal age on the male genome and, ultimately, on the health of the offspring. STUDY FUNDING/COMPETING INTEREST(S) No funding was obtained for this study. V.D. is an employee of Reprosource/Quest Diagnostics. D.S. reports he was a Scientific Advisor to Cooper Surgical. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- D A Vaughan
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA.,Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA 02115, USA.,Boston IVF, Waltham, MA 02445, USA
| | - E Tirado
- ReproSource Fertility Diagnostics, Marlborough, MA 01752, USA
| | - D Garcia
- Clinica EUGIN, Barcelona 08029, Spain
| | - V Datta
- ReproSource Fertility Diagnostics, Marlborough, MA 01752, USA
| | - D Sakkas
- Boston IVF, Waltham, MA 02445, USA
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12
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Ten J, Guerrero J, Linares Á, Rodríguez-Arnedo A, Morales R, Lledó B, Llácer J, Bernabeu R. Sperm DNA fragmentation on the day of fertilisation is not associated with assisted reproductive technique outcome independently of gamete quality. HUM FERTIL 2021; 25:706-715. [PMID: 33501871 DOI: 10.1080/14647273.2021.1877364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The evaluation of sperm DNA fragmentation has been postulated as a predictive molecular parameter of the semen fertilising potential, as well as the ability to give rise to a healthy embryo and an ongoing pregnancy. However, there are controversial results due to oocyte quality, the use of different measurement techniques and interpretation criteria. Our objective is to investigate if sperm DNA fragmentation on the day of fertilisation influences in vitro fertilisation (IVF) outcome in a prospective double-blind study. Three groups of patients were defined: (i) 68 couples undergoing intracytoplasmic sperm injection (ICSI) due to severe male factor with normal ovarian response (NOR); (ii) 113 couples undergoing conventional in vitro fertilisation (IVF) in our oocyte donation programme due to ovarian failure; and (iii) 150 low ovarian response (LOR) patients undergoing ICSI or IVF. TUNEL assay was performed from an aliquot of each capacitated semen sample to detect DNA fragmentation. There was no relationship between blood serum β-hCG positive test, clinical pregnancy and first trimester miscarriage with DFI levels in NOR (p = 0.41, p = 0.36, p = 0.40), recipient (p = 0.49, p = 0.99 and p = 0.38) and LOR (p = 0.52, p = 0.20, p = 0.64) groups of patients, respectively. Therefore, ART outcomes are not affected by sperm DNA fragmentation independently of gamete quality.
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Affiliation(s)
- Jorge Ten
- Biology of Reproduction Unit, Instituto Bernabeu, Alicante, Spain
| | - Jaime Guerrero
- Biology of Reproduction Unit, Instituto Bernabeu, Alicante, Spain
| | - Ángel Linares
- Biology of Reproduction Unit, Instituto Bernabeu, Alicante, Spain
| | | | - Ruth Morales
- Molecular Biology and Genetics Unit, Instituto Bernabeu Biotech, Alicante, Spain
| | - Belén Lledó
- Molecular Biology and Genetics Unit, Instituto Bernabeu Biotech, Alicante, Spain
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13
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Pandruvada S, Royfman R, Shah TA, Sindhwani P, Dupree JM, Schon S, Avidor-Reiss T. Lack of trusted diagnostic tools for undetermined male infertility. J Assist Reprod Genet 2021; 38:265-276. [PMID: 33389378 DOI: 10.1007/s10815-020-02037-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/13/2020] [Indexed: 12/15/2022] Open
Abstract
Semen analysis is the cornerstone of evaluating male infertility, but it is imperfect and insufficient to diagnose male infertility. As a result, about 20% of infertile males have undetermined infertility, a term encompassing male infertility with an unknown underlying cause. Undetermined male infertility includes two categories: (i) idiopathic male infertility-infertile males with abnormal semen analyses with an unknown cause for that abnormality and (ii) unexplained male infertility-males with "normal" semen analyses who are unable to impregnate due to unknown causes. The treatment of males with undetermined infertility is limited due to a lack of understanding the frequency of general sperm defects (e.g., number, motility, shape, viability). Furthermore, there is a lack of trusted, quantitative, and predictive diagnostic tests that look inside the sperm to quantify defects such as DNA damage, RNA abnormalities, centriole dysfunction, or reactive oxygen species to discover the underlying cause. To better treat undetermined male infertility, further research is needed on the frequency of sperm defects and reliable diagnostic tools that assess intracellular sperm components must be developed. The purpose of this review is to uniquely create a paradigm of thought regarding categories of male infertility based on intracellular and extracellular features of semen and sperm, explore the prevalence of the various categories of male factor infertility, call attention to the lack of standardization and universal application of advanced sperm testing techniques beyond semen analysis, and clarify the limitations of standard semen analysis. We also call attention to the variability in definitions and consider the benefits towards undetermined male infertility if these gaps in research are filled.
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Affiliation(s)
- Swati Pandruvada
- Department of Biological Sciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA
| | - Rachel Royfman
- Department of Biological Sciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA
| | - Tariq A Shah
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA
| | - Puneet Sindhwani
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA
| | - James M Dupree
- Department of Urology and Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, 48019, USA
| | - Samantha Schon
- Division of Reproductive Endocrinology & Infertility, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA. .,Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, 43607, USA.
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14
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Haghpanah A, Masjedi F, Alborzi S, Hosseinpour A, Dehghani A, Malekmakan L, Roozbeh J. Potential mechanisms of SARS-CoV-2 action on male gonadal function and fertility: Current status and future prospects. Andrologia 2020; 53:e13883. [PMID: 33108833 PMCID: PMC7645932 DOI: 10.1111/and.13883] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/21/2020] [Accepted: 09/27/2020] [Indexed: 02/06/2023] Open
Abstract
The novel coronavirus was recognised in December 2019 and caught humanity off guard. The virus employs the angiotensin‐converting enzyme 2 (ACE2) receptor for entry into human cells. ACE2 is expressed on different organs, which is raising concern as to whether these organs can be infected by the virus or not. The testis appears to be an organ enriched with levels of ACE2, while the possible mechanisms of involvement of the male reproductive system by SARS‐CoV‐2 are not fully elucidated. The major focus of the present studies is on the short‐term complications of the coronavirus and gains importance on studying the long‐term effects, including the possible effects of the virus on the male reproductive system. The aim of this review was to provide new insights into different possible mechanisms of involvement of male gonads with SARS‐CoV‐2 including investigating the ACE2 axis in testis, hormonal alterations in patients with COVID‐19, possible formation of anti‐sperm antibodies (ASA) and subsequently immunological infertility as a complication of SARS‐CoV‐2 infection. Finally, we suggest measuring the sperm DNA fragmentation index (DFI) as a determiner of male fertility impairment in patients with COVID‐19 along with other options such as sex‐related hormones and semen analysis. Invasion of SARS‐CoV‐2 to the spermatogonia, Leydig cells and Sertoli cells can lead to sex hormonal alteration and impaired gonadal function. Once infected, changes in ACE2 signalling pathways followed by oxidative stress and inflammation could cause spermatogenesis failure, abnormal sperm motility, DNA fragmentation and male infertility.
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Affiliation(s)
- Abdolreza Haghpanah
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Urology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Masjedi
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Alborzi
- Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Gynecology and Obstetrics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Alireza Hosseinpour
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Anahita Dehghani
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Leila Malekmakan
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jamshid Roozbeh
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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15
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Akinola AO, Oyeyemi AW, Daramola OO, Raji Y. Effects of the methanol root extract of Carpolobia lutea on sperm indices, acrosome reaction, and sperm DNA integrity in cadmium-induced reproductive toxicity in male Wistar rats. JBRA Assist Reprod 2020; 24:454-465. [PMID: 32510897 PMCID: PMC7558903 DOI: 10.5935/1518-0557.20200036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE Oxidative stress is a mechanism of cadmium-induced reproductive dysfunction. Carpolobia lutea is a free radical scavenger. Our study investigated the potential protective effects of Carpolobia lutea root methanol extract against cadmium-induced reproductive toxicity. METHODS We obtained the Carpolobia lutea root in Akure, and it was authenticated at the Forestry Research Institute of Nigeria (FRIN) herbarium, Ibadan, Nigeria, with FHI number 109784. We used Soxhlet extraction to obtain its methanol extract. We used thirty male Wistar rats (150-170g) in this study, (n=5 per group), and treated them as follows: Control (1 ml/kg normal saline), Cd (2 mg/kg), Cd+MCL (2 mg/kg+100 mg/kg), Cd+MCL (2 mg/kg+200 mg/kg), MCL (100 mg/kg), MCL (200 mg/kg). We administered Carpolobia lutea orally for 8 weeks. We administered a single dose of 2 mg/kg of cadmium intraperitoneally. We assessed the sperm profile using a computer-aided sperm analyzer. Under microscopy, we determined the sperm acrosome reaction and the DNA damage. We measured the seminal fructose level using spectrophotometry, and the data were analyzed using ANOVA at p<0.05. RESULTS Cd+MCL (2mg/kg+200 mg/kg) significantly increased sperm count (339.0±25.0 vs. 29.0±4.5 million/mL), motility (80.0±0.2 vs. 55.0±4.9%), viability (68.7±2.7 vs. 31.3±2.9%) and decreased abnormal sperm (28.3±1.7 vs. 43.3±2.5%), relative to the cadmium group. Cd+MCL (2mg/kg+200 mg/kg) significantly increased acrosome reaction (68.0±7.5 vs. 15.2±2.4%) and seminal fructose level (0.49±0.06 vs. 0.28±0.06 mmol/L) relative to the cadmium group. Cd+MCL (2mg/kg+200 mg/kg) significantly decreased sperm DNA damage (14.1±1.6 vs. 35.9±5.3%) in relation to the cadmium group. CONCLUSIONS Carpolobia lutea root extract improves the sperm variables of rats exposed to cadmium.
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Affiliation(s)
- Adeniran Oluwadamilare Akinola
- Department of Physiology, University of Medical Sciences, Ondo City, Ondo State, Nigeria.,Laboratory for Reproductive Physiology and Developmental Programming, Department of Physiology, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Adekunle Wahab Oyeyemi
- Department of Physiology, Igbinedion University Okada, Edo State, Nigeria.,Laboratory for Reproductive Physiology and Developmental Programming, Department of Physiology, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Oluyemi O Daramola
- Department of Physiology, Igbinedion University Okada, Edo State, Nigeria.,Laboratory for Reproductive Physiology and Developmental Programming, Department of Physiology, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Yinusa Raji
- Laboratory for Reproductive Physiology and Developmental Programming, Department of Physiology, University of Ibadan, Ibadan, Oyo State, Nigeria
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16
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Haddock L, Gordon S, Lewis SEM, Larsen P, Shehata A, Shehata H. Sperm DNA fragmentation is a novel biomarker for early pregnancy loss. Reprod Biomed Online 2020; 42:175-184. [PMID: 33082108 DOI: 10.1016/j.rbmo.2020.09.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/27/2020] [Accepted: 09/13/2020] [Indexed: 12/27/2022]
Abstract
RESEARCH QUESTION Spontaneous pregnancy loss affects 10-15% of couples, with 1-2% suffering recurrent pregnancy loss and 50% of miscarriages remaining unexplained. Male genomic integrity is essential for healthy offspring, meaning sperm DNA quality may be important in maintaining a pregnancy. Does sperm DNA fragmentation measured by alkaline Comet assay act as a biomarker for early pregnancy loss? DESIGN Sperm DNA fragmentation was measured by alkaline Comet test in 76 fertile donors and 217 men whose partners had recently experienced miscarriage. Couples were divided into five groups for analysis: one miscarriage after spontaneous conception; two or more miscarriages after spontaneous conception; one miscarriage after fertility treatment; two or more miscarriages after fertility treatment and biochemical pregnancy. RESULTS Receiver operator characteristic curve analysis was used to determine ability of the average Comet score (ACS), low Comet score (LCS) and high Comet score (HCS) to diagnose miscarriage and develop clinical thresholds comparing men whose partners have miscarried with men with recently proven fertility. Male partners of women who had miscarried had higher sperm DNA damage (ACS 33.32 ± 0.57%) than fertile men (ACS 14.87 ± 0.66%; P < 0.001). Average Comet score, HCS and LCS all have promise as being highly predictive of sporadic and recurrent miscarriage using clinical thresholds from comparisons with fertile men's spermatozoa: receiver operating characteristic curve AUC for ACS ≥26%, 0.965; LCS ≤70%, 0.969; HCS ≥2%, 0.883; P <0.0001. CONCLUSIONS Sperm DNA damage measured by the alkaline Comet has promise as a robust biomarker for sporadic and recurrent miscarriage after spontaneous or assisted conception, and may provide novel diagnoses and guidance for future fertility pathways.
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Affiliation(s)
- Lesley Haddock
- Examenlab Ltd, Unit 18A, Block K, Weavers Court Business Park, Linfield Road, Belfast BT12 5GH, UK.
| | - Stephen Gordon
- Urology at Epsom and St Helier University Hospitals NHS Trust, Dorking Rd, Epsom KT18 7EG, UK
| | - Sheena E M Lewis
- Examenlab Ltd, Unit 18A, Block K, Weavers Court Business Park, Linfield Road, Belfast BT12 5GH, UK
| | - Peter Larsen
- Cryos International, Vesterbro Torv I, Aarhus 8000, Denmark
| | - Amjad Shehata
- Centre for Reproductive Immunology and Pregnancy, Bramshott House, 137/139 High Street, Epsom KT19 8EH, UK
| | - Hassan Shehata
- Centre for Reproductive Immunology and Pregnancy, Bramshott House, 137/139 High Street, Epsom KT19 8EH, UK; Maternal Medicine at Epsom and St Helier University Hospitals NHS Trust, Dorking Road, Epsom KT18 7EG, UK
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17
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Kumaresan A, Das Gupta M, Datta TK, Morrell JM. Sperm DNA Integrity and Male Fertility in Farm Animals: A Review. Front Vet Sci 2020; 7:321. [PMID: 32637425 PMCID: PMC7317013 DOI: 10.3389/fvets.2020.00321] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/11/2020] [Indexed: 12/11/2022] Open
Abstract
The accurate prediction of male fertility is of major economic importance in the animal breeding industry. However, the results of conventional semen analysis do not always correlate with field fertility outcomes. There is evidence to indicate that mammalian fertilization and subsequent embryo development depend, in part, on the inherent integrity of the sperm DNA. Understanding the complex packaging of mammalian sperm chromatin and assessment of DNA integrity could potentially provide a benchmark in clinical infertility. In the era of assisted reproduction, especially when in-vitro fertilization or gamete intrafallopian transfer or intracytoplasmic sperm injection is used, assessment of sperm DNA integrity is important because spermatozoa are not subjected to the selection process occurring naturally in the female reproductive tract. Although sperm DNA integrity testing measures a significant biological parameter, its precise role in the infertility evaluation in farm animals remains unclear. In this review, the earlier findings on sperm DNA integrity in relation to male fertility are compiled and analyzed. Furthermore, the causes and consequences of sperm DNA damage are described, together with a review of advances in methods for detection of sperm DNA damage, and the prognostic value of sperm DNA quality on male fertility.
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Affiliation(s)
- Arumugam Kumaresan
- Theriogenology Laboratory, Southern Regional Station of National Dairy Research Institute (ICAR), Bengaluru, India
| | - Mohua Das Gupta
- Theriogenology Laboratory, Southern Regional Station of National Dairy Research Institute (ICAR), Bengaluru, India
| | - Tirtha Kumar Datta
- Animal Genomics Laboratory, National Dairy Research Institute (ICAR), Karnal, India
| | - Jane M. Morrell
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
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18
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Turner KA, Rambhatla A, Schon S, Agarwal A, Krawetz SA, Dupree JM, Avidor-Reiss T. Male Infertility is a Women's Health Issue-Research and Clinical Evaluation of Male Infertility Is Needed. Cells 2020; 9:cells9040990. [PMID: 32316195 PMCID: PMC7226946 DOI: 10.3390/cells9040990] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 02/06/2023] Open
Abstract
Infertility is a devastating experience for both partners as they try to conceive. Historically, when a couple could not conceive, the woman has carried the stigma of infertility; however, men and women are just as likely to contribute to the couple’s infertility. With the development of assisted reproductive technology (ART), the treatment burden for male and unexplained infertility has fallen mainly on women. Equalizing this burden requires reviving research on male infertility to both improve treatment options and enable natural conception. Despite many scientific efforts, infertility in men due to sperm dysfunction is mainly diagnosed by a semen analysis. The semen analysis is limited as it only examines general sperm properties such as concentration, motility, and morphology. A diagnosis of male infertility rarely includes an assessment of internal sperm components such as DNA, which is well documented to have an impact on infertility, or other components such as RNA and centrioles, which are beginning to be adopted. Assessment of these components is not typically included in current diagnostic testing because available treatments are limited. Recent research has expanded our understanding of sperm biology and suggests that these components may also contribute to the failure to achieve pregnancy. Understanding the sperm’s internal components, and how they contribute to male infertility, would provide avenues for new therapies that are based on treating men directly for male infertility, which may enable less invasive treatments and even natural conception.
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Affiliation(s)
- Katerina A. Turner
- Department of Biological Sciences, University of Toledo, Toledo, OH 43606, USA;
| | - Amarnath Rambhatla
- Department of Urology, Vattikuti Urology Institute, Henry Ford Health System, Detroit, MI 48202, USA;
| | - Samantha Schon
- Division of Reproductive Endocrinology & Infertility, Department of Obstetrics and Gynecology, University of Michigan Medical School, L4000 UH-South, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA;
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH 44195, USA;
| | - Stephen A. Krawetz
- Department of Obstetrics and Gynecology, Center for Molecular Medicine and Genetics, C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, USA;
| | - James M. Dupree
- Department of Urology and Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI 48019, USA;
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, Toledo, OH 43606, USA;
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
- Correspondence:
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19
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Darmishonnejad Z, Zarei-Kheirabadi F, Tavalaee M, Zarei-Kheirabadi M, Zohrabi D, Nasr-Esfahani MH. Relationship between sperm telomere length and sperm quality in infertile men. Andrologia 2020; 52:e13546. [PMID: 32189393 DOI: 10.1111/and.13546] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/12/2020] [Accepted: 01/27/2020] [Indexed: 12/13/2022] Open
Abstract
Telomeres, noncoding and repetitive DNA sequences play a significant function in chromatin integrity. Telomere length is age-dependent in somatic cells, while it increases in sperm cell with age. Therefore, we aimed to assess sperm chromatin, leucocyte and sperm telomere length (LTL, STL) in spermatozoon of 38 infertile and 19 fertile men aged between 20 and 50 years. Protamine deficiency (chromomycin A3 test), DNA fragmentation (TUNEL assay), lipid peroxidation (Bodipy probe) and telomere length (quantitative real-time PCR) were assessed. A significant decrease in mean of sperm concentration and motility and a significant increase in means of sperm abnormal morphology, DNA fragmentation, lipid peroxidation and protamine deficiency were observed in infertile compared with fertile men. In addition, the mean of LTL and STL were significantly shorter in infertile men compared with fertile individuals. We observed significant associations between telomere length with sperm concentration, DNA fragmentation and lipid peroxidation. We hypothesised that increased oxidative stress in spermatozoa of infertile men can result in abnormal packaging of chromatin, damage of DNA and shorter sperm telomere length. Together, these anomalies may account for fertility failure in these individuals.
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Affiliation(s)
- Zahra Darmishonnejad
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Farzaneh Zarei-Kheirabadi
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Department of Biology, Faculty of Science, NourDanesh Institute of Higher Education, Isfahan, Iran
| | - Marziyeh Tavalaee
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Masoumeh Zarei-Kheirabadi
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Dina Zohrabi
- Department of Biology, Faculty of Science, NourDanesh Institute of Higher Education, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran
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20
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Abstract
Gender affirming medical and surgical treatments affect the reproductive potential of transgender individuals. Prior to the development of assisted reproductive technologies (ART), genital gender-affirming surgery frequently eliminated a patient’s reproductive potential. Today, all patients should be counseled on their fertility preservation (FP) options before medical and surgical transition, yet this appears to seldom occur in practice. The following review is the result of a systematic literature search of PubMed, Medline and Google Scholar to identify current and future FP options, barriers to treatment patients face, practice patterns of transgender health care providers, and if there were any standardized counseling protocols. Options for transwomen at any point in their transition range from simply providing a semen sample to be used with assistive reproductive techniques to experimental techniques involving testicular cryopreservation followed by in vitro initiation of spermatogenesis. Transmen before and after starting hormone therapy can pursue any assistive reproductive techniques available for ciswomen. Future options currently under investigation include ovarian tissue cryopreservation (OTC) with in vitro oocyte maturation. In addition to counseling about their FP options, patients should be advised prospectively about the requirements, process details, the total costs associated with achieving pregnancy, and the inherent risks associated with using preserved genetic material including risk of failure, and maternal and fetal health risks. Transgender patients report using assistive reproductive services difficult, due to a lack of dialogue about fertility and the lack of information offered to them- presumably because their circumstances do not fit into a traditional narrative familiar to providers. Physicians and health care providers would benefit from better educational tools to help transgender patients make informed decisions and better training about transgender patients in general, and FP options available to them.
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Affiliation(s)
- Joshua Sterling
- Division of Urology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Maurice M Garcia
- Division of Urology, Cedars-Sinai Medical Center, Los Angeles, Los Angeles, CA, USA.,Department of Urology, University of California San Francisco, San Francisco, CA, USA.,Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
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21
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Laronda MM. Engineering a bioprosthetic ovary for fertility and hormone restoration. Theriogenology 2020; 150:8-14. [PMID: 31973967 DOI: 10.1016/j.theriogenology.2020.01.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 12/14/2022]
Abstract
There has been an increase in childhood cancer survivors over the past few decades, and with this, an increased awareness of the co-morbidities of the treatment or disease that affect the survivor's quality-of-life. The increased rate of infertility among this patient group and the desire to have biological children voiced by childhood cancer survivors underscores the urgent need for fertility preservation and development of techniques to restore fertility and gonadal hormone function for this population. The ovarian tissue contains a finite source of female gametes that can be transplanted to restore ovarian function and has resulted in over one hundred reported live births. However, the success of biological offspring per ovarian tissue transplant, the reduced lifespan of these transplants, and the potential for these tissues to contain cancer cells from patients with metastatic diseases supports the need for improved options. One innovation that could improve ovarian transplantation is the development of a bioprosthetic ovary comprised of a 3D printed scaffold with isolated ovarian follicles. A murine bioprosthetic ovary restored ovarian hormones in ovariectomized mice, which also gave birth to healthy offspring. Research is ongoing to create the next iteration of the scaffold that would support ovarian follicles from large animal models and humans with the hopes of translating this technology for patients.
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Affiliation(s)
- Monica M Laronda
- Department of Endocrinology, Department of Surgery and Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Department of Pediatrics, Feinberg School of Medicine, Northwestern University, USA.
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Zheng WW, Song G, Wang QL, Liu SW, Zhu XL, Deng SM, Zhong A, Tan YM, Tan Y. Sperm DNA damage has a negative effect on early embryonic development following in vitro fertilization. Asian J Androl 2019; 20:75-79. [PMID: 28675153 PMCID: PMC5753558 DOI: 10.4103/aja.aja_19_17] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Sperm DNA damage is recognized as an important biomarker of male infertility. To investigate this, sperm DNA damage was assessed by the sperm chromatin dispersion (SCD) test in semen and motile spermatozoa harvested by combined density gradient centrifugation (DGC) and swim-up in 161 couples undergoing in vitro fertilization (IVF). Semen analysis and sperm DNA damage results were compared between couples who did or did not achieve pregnancy. The sperm DNA damage level was significantly different between the two groups (P < 0.05) and was negatively correlated with IVF outcomes. Logistic regression analysis confirmed that it was an independent predictor for achieving clinical pregnancy. The effects of different levels of sperm DNA damage on IVF outcomes were also compared. There were significant differences in day 3 embryo quality, blastocyst formation rate, and implantation and pregnancy rates (P < 0.05), but not in the basic fertilization rate between the two groups. Thus, sperm DNA damage as measured by the SCD appears useful for predicting the clinical pregnancy rate following IVF.
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Affiliation(s)
- Wei-Wei Zheng
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China.,Key Laboratory of Male Reproductive and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Ge Song
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China.,Key Laboratory of Male Reproductive and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Qi-Ling Wang
- Key Laboratory of Male Reproductive and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Shan-Wen Liu
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Xiao-Li Zhu
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Shun-Mei Deng
- Key Laboratory of Male Reproductive and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - An Zhong
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Yu-Mei Tan
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
| | - Ying Tan
- Reproductive Medicine Center, Family Planning Research Institute of Guangdong Province, Guangzhou 510060, China
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Sperm DNA fragmentation index as a promising predictive tool for male infertility diagnosis and treatment management – meta-analyses. Reprod Biomed Online 2018; 37:315-326. [DOI: 10.1016/j.rbmo.2018.06.023] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 06/21/2018] [Accepted: 06/22/2018] [Indexed: 11/17/2022]
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24
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Borovets SY, Rybalov MA, Gorbachev AG, Al’-Shukri SK, Levina AV. LONG-TERM RESULTS OF TREATMENT OF PATIENTS WITH CHRONIC NONBACTERIAL PROSTATITIS AND INCREASED LEVEL OF SPERM DNA FRAGMENTATION WITH THE PROSTATILEN® AC DRUG. ACTA ACUST UNITED AC 2018. [DOI: 10.17650/2070-9781-2018-19-2-52-57] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The study objectiveis to evaluate the results of treatment of patients with chronic nonbacterial prostatitis, increased level of sperm DNA fragmentation, and concomitant reproductive function disorders with the Prostatilen® AC drug 1, 2, and 3 months after the end of therapy.Materials and methods. Thirty five men aged 21–46 years (mean age 31.3 ± 4.3 years) with a verified diagnosis of “chronic nonbacterial prostatitis, associated reproductive function disorders, history of early-stage missed miscarriage in a wife/sex partner” were examined. All patients received Prostatilen® AC as rectal suppositories daily for 10 days with a repeat course 20 days later. Before and after the treatment, as well as after 1, 2, and 3 months after its end, the fraction of spermatozoa with fragmented DNA was measured in all patients using sperm chromatin structure assay with flow cytofluorometry. The risk of decreased fertility was considered low if the number of spermatozoa with fragmented DNA was 15 % or lower (this value is considered the norm). If DNA fragmentation was 16 % or higher, it was considered increased.Results. The fraction of spermatozoa with fragmented DNA significantly decreased during the treatment, and 1 month after the end of the therapy it was 7.5 ± 4.2 % (prior to treatment it was 17.8 ± 6.7 %) (p <0.005). Prior to Prostatilen® AC treatment, enhanced DNA fragmentation was observed in 18 (51 %) patients, 1 month after treatment – only in 6 (17 %); the difference is statistically significant (p <0.001). Two months after the end of treatment, increased level of DNA fragmentation was detected in 7 (20 %) patients, 3 months after – in 15 (42 %) patients. Aside from that, if the fraction of spermatozoa with fragmented DNA was more than 30 % before treatment, then a decrease in this value during treatment wasn’t statistically significant.Conclusion. Prostatilen® AC promotes a reduction in the level of sperm DNA fragmentation in patients with chronic nonbacterial prostatitis. A steady positive effect persists for 2 months with a tendency to weaken at the end of month 3 which indicates advisability of repeated courses of Prostatilen® AC treatment 2 months after the end of therapy.
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Li C, Zhao K, Zhang H, Liu L, Xiong F, Wang K, Chen B. Lead exposure reduces sperm quality and DNA integrity in mice. ENVIRONMENTAL TOXICOLOGY 2018; 33:594-602. [PMID: 29446210 DOI: 10.1002/tox.22545] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/23/2018] [Accepted: 01/27/2018] [Indexed: 06/08/2023]
Abstract
Toxicity of lead on male reproductive functions has raised wide public concern as environmental lead contamination remains common worldwide. Conflicting and controversial data are available regarding effects of lead on male fertility. More importantly, our knowledge on effects of lead on sperm DNA integrity is significantly limited. Thus, further studies should focus on this issue. In the current study, adult male mice were exposed to a series of lead acetate concentrations in drinking water for six weeks. Following administration, lead levels in blood, testicles, and epididymis were measured, and potential changes in morphology of testis and epididymis due to lead exposure were identified. We also analyzed sperm parameters, including sperm density, viability, motility, and morphology, to evaluate quality of sperm collected from epididymis. Especially, hypothetical influence of lead on sperm DNA integrity was also evaluated by terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick end labeling, alkaline comet assay, and sperm chromatin structure assay. Lead exposure possibly exerted no effect on growth of mice because these animals acquired similar body weight gain during the experimental period. However, high lead concentrations (0.5% and 1%) in drinking water affected sperm motility and increased percentage of spermatozoa with abnormal morphology. In groups treated with 0.25%, 0.5%, and 1% lead acetate, percentages of sperm cells showing DNA breaks and chromatin structure damage significantly increased. Altogether, lead exposure not only exhibits adverse effects on sperm physiological parameters, but also impairs DNA structure and integrity. These effects may lead to significant decline in male fertility.
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Affiliation(s)
- Cuiling Li
- Department of Medical Ultrasound, Guangzhou First People's Hospital, Guangzhou, China
- Institute of Family Planning Research, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Institute of Family Planning Research, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huiping Zhang
- Institute of Family Planning Research, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lili Liu
- Department of Pathology, Wuhan Children Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Xiong
- Department of Urology, First College of Clinical Medical Science/Yichang Central People's Hospital, Three Gorges University, Yichang, China
| | - Kunyu Wang
- Department of Gastroenterology, Tianyou Hospital affiliated to Wuhan University of Science & Technology, Wuhan, China
| | - Biao Chen
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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26
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Ahmed I, Abdelateef S, Laqqan M, Amor H, Abdel-Lah MA, Hammadeh ME. Influence of extended incubation time on Human sperm chromatin condensation, sperm DNA strand breaks and their effect on fertilisation rate. Andrologia 2018; 50:e12960. [PMID: 29441594 DOI: 10.1111/and.12960] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2018] [Indexed: 11/29/2022] Open
Abstract
The purpose of this study was to determine influence of extended incubation time on sperm chromatin condensation and DNA strand breaks and their effect on fertilisation rate. Forty couples undergoing ICSI therapy were included. Semen was prepared by PureSperm gradient centrifugation and divided into two parts. The first part (G1) was used immediately for ICSI, whereas the second part (G2) was kept in the incubator at 37°C, 5% and 90% Humidity for 5 hr, and thereafter, the capacitated spermatozoa were used for ICSI. The TUNEL test and chromomycin CMA3 were used to evaluate the DNA strand breaks and chromatin condensation respectively. The percentage of condensed chromatin was 73.92 ± 12.70 in the group 1 and 81.13 ± 10.31% in group 2 (p = .001). However, the double-strand breaks were 11.15 ± 8.67% in G.1 and 16.30 ± 11.12% in G.2. (p = .001). Fertilisation rate in the (Group 1) was 62.45% and 69.17% in (Group 2). There was a positive correlation between condensed chromatin and fertilisation rate (r = 0.846, p = .001) and a negative correlation with DNA double-strand breaks (r = -0.802; p = .001). In conclusion, the prolonged sperm incubation (5 hr) leads to a higher chromatin condensation and to a significantly increased number of DNA strands double breaks with no influence on fertilisation rates.
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Affiliation(s)
- I Ahmed
- Department of Obstetrics & Gynecology, University of Saarland, Homburg, Germany
- Department of Obstetrics & Gynecology, Sohag University, Sohag, Egypt
| | - S Abdelateef
- Department of Obstetrics & Gynecology, University of Saarland, Homburg, Germany
| | - M Laqqan
- Department of Obstetrics & Gynecology, University of Saarland, Homburg, Germany
| | - H Amor
- Department of Obstetrics & Gynecology, University of Saarland, Homburg, Germany
| | - M A Abdel-Lah
- Department of Obstetrics & Gynecology, Sohag University, Sohag, Egypt
| | - M E Hammadeh
- Department of Obstetrics & Gynecology, University of Saarland, Homburg, Germany
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Sanches ESAM, Tsuzuki F, Joinhas FA, Martins CCN, Fernandes GSA, Salles MJS. Bupropion promotes alterations in the spermatogenesis of mice and congenital malformations in the offspring. Reprod Fertil Dev 2018; 30:1751-1758. [DOI: 10.1071/rd18007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 06/07/2018] [Indexed: 01/23/2023] Open
Abstract
Bupropion hydrochloride (BUP) has been associated with male sexual dysfunction. The aim of this study was to evaluate the effects of BUP on the reproductive function of male mice and to evaluate offspring development. The mice were distributed into BUP group (40 mg kg−1) and control group (saline). On Day 35 of treatment the males were placed to mate with females and then killed on Day 46 for evaluation of reproductive function. On Day 18 of pregnancy, pregnant females were killed for evaluation of congenital malformations in the offspring. The BUP group showed a decrease in the Johnsen score (Control, 9.354 ± 0.092; BUP, 7.615 ± 0.147), Sertoli (Control, 5.623 ± 0.184; BUP, 4.215 ± 0.097) and Leydig (Control, 11.430 ± 0.817; BUP, 7.531 ± 0.213) cell counts, testosterone levels (Control, 783.5 ± 154.2 ng dL−1; BUP, 201.4 ± 54.8 ng dL−1) and sperm production (Control, 2.852 ± 0.211; BUP, 1.988 ± 0.116) and increased morphological alterations of the sperm head (Control, 8.134%; BUP, 10.423%) and tail (Control, 4.96%; BUP, 16.211%). The congenital malformations observed in BUP-derived offspring were: kyphosis (Control, 0.00%; BUP, 5.26%), retroverted rear legs (Control, 14.43%; BUP, 53.68%), incomplete ossification of the supraoccipital and exoccipital (Control, 21.82%; BUP, 86.00%) and sternum (Control, 25.45%; BUP, 82.00%). BUP had toxic effects on testicular function and teratogenic potential.
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28
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Hajizadeh Maleki B, Tartibian B. Combined aerobic and resistance exercise training for improving reproductive function in infertile men: a randomized controlled trial. Appl Physiol Nutr Metab 2017; 42:1293-1306. [DOI: 10.1139/apnm-2017-0249] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This randomized controlled trial was conducted to examine the effects of 24 weeks of combined aerobic and resistance exercise training on seminal markers of inflammation and oxidative stress as well as markers of male reproductive function and reproductive performance in infertile patients. Of a total of 1296 infertile patients (aged 25–40 years) who were screened, 556 were randomly assigned to exercise (n = 278) and nonexercise (n = 278) groups. Semen samples were taken before and at 12 and 24 weeks as well as 7 and 30 days post-intervention. The training program reduced seminal proinflammatory cytokines (interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor alpha) and markers of oxidative stress (reactive oxygen species, malondialdehyde, and 8-isoprostane) (P < 0.05). Additional improvements were also achieved in seminal antioxidant defense system (superoxide dismutase, catalase, and total antioxidant capacity) (P < 0.05). Training-induced changes in inflammation and oxidative stress status correlated with favorable improvements in semen parameters, sperm DNA integrity, and pregnancy rate (P < 0.05). In conclusion, these results support the evidence for the favorable effects of combined aerobic and resistance exercise training in male factor infertility.
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Affiliation(s)
| | - Bakhtyar Tartibian
- Department of Sports Injuries, Faculty of Physical Education and Sports Sciences, Allameh Tabataba’i University, Tehran, Iran
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29
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El-Sakka AI. Routine assessment of sperm DNA fragmentation in clinical practice: commentary and perspective. Transl Androl Urol 2017; 6:S640-S643. [PMID: 29082192 PMCID: PMC5643633 DOI: 10.21037/tau.2017.03.29] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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30
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Cissen M, Wely MV, Scholten I, Mansell S, Bruin JPD, Mol BW, Braat D, Repping S, Hamer G. Measuring Sperm DNA Fragmentation and Clinical Outcomes of Medically Assisted Reproduction: A Systematic Review and Meta-Analysis. PLoS One 2016; 11:e0165125. [PMID: 27832085 PMCID: PMC5104467 DOI: 10.1371/journal.pone.0165125] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Sperm DNA fragmentation has been associated with reduced fertilization rates, embryo quality, pregnancy rates and increased miscarriage rates. Various methods exist to test sperm DNA fragmentation such as the sperm chromatin structure assay (SCSA), the sperm chromatin dispersion (SCD) test, the terminal deoxynucleotidyl transferase mediated deoxyuridine triphosphate nick end labelling (TUNEL) assay and the single cell gel electrophoresis (Comet) assay. We performed a systematic review and meta-analysis to assess the value of measuring sperm DNA fragmentation in predicting chance of ongoing pregnancy with IVF or ICSI. Out of 658 unique studies, 30 had extractable data and were thus included in the meta-analysis. Overall, the sperm DNA fragmentation tests had a reasonable to good sensitivity. A wide variety of other factors may also affect the IVF/ICSI outcome, reflected by limited to very low specificity. The constructed hierarchical summary receiver operating characteristic (HSROC) curve indicated a fair discriminatory capacity of the TUNEL assay (area under the curve (AUC) of 0.71; 95% CI 0.66 to 0.74) and Comet assay (AUC of 0.73; 95% CI 0.19 to 0.97). The SCSA and the SCD test had poor predictive capacity. Importantly, for the TUNEL assay, SCD test and Comet assay, meta-regression showed no differences in predictive value between IVF and ICSI. For the SCSA meta-regression indicated the predictive values for IVF and ICSI were different. The present review suggests that current sperm DNA fragmentation tests have limited capacity to predict the chance of pregnancy in the context of MAR. Furthermore, sperm DNA fragmentation tests have little or no difference in predictive value between IVF and ICSI. At this moment, there is insufficient evidence to recommend the routine use of sperm DNA fragmentation tests in couples undergoing MAR both for the prediction of pregnancy and for the choice of treatment. Given the significant limitations of the evidence and the methodological weakness and design of the included studies, we do urge for further research on the predictive value of sperm DNA fragmentation for the chance of pregnancy after MAR, also in comparison with other predictors of pregnancy after MAR.
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Affiliation(s)
- Maartje Cissen
- Department of Obstetrics & Gynaecology, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
| | - Madelon van Wely
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Irma Scholten
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Steven Mansell
- Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America
| | - Jan Peter de Bruin
- Department of Obstetrics & Gynaecology, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
| | - Ben Willem Mol
- The Robinson Institute/School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide, Australia
| | - Didi Braat
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Sjoerd Repping
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Geert Hamer
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Aboulmaouahib S, Madkour A, Kaarouch I, Saadani B, Sefrioui O, Louanjli N, Copin H, Cadi R, Benkhalifa M. Effect of semen preparation technique and its incubation on sperm quality in the Moroccan population. Andrologia 2016; 49. [DOI: 10.1111/and.12688] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2016] [Indexed: 02/02/2023] Open
Affiliation(s)
- S. Aboulmaouahib
- Laboratoire de Physiologie et Génétique Moléculaire (PGM); Département de Biologie; Faculté des Sciences Ain Chock; Université HASSAN II; Casablanca Morocco
- Labomac IVF Centers and Clinical Laboratory Medicine; Casablanca Morocco
| | - A. Madkour
- Labomac IVF Centers and Clinical Laboratory Medicine; Casablanca Morocco
- Biochemistry and Immunology Laboratory; Faculty of Sciences; Mohammed V University; Rabat Morocco
- Place de Nid Aux Iris; Clinique des Iris; IVF Center IRIFIV; Casablanca Morocco
- Private Clinic of Human Reproduction and Endoscopic Surgery; Anfa Fertility Center; Casablanca Morroco
| | - I. Kaarouch
- Labomac IVF Centers and Clinical Laboratory Medicine; Casablanca Morocco
- Biochemistry and Immunology Laboratory; Faculty of Sciences; Mohammed V University; Rabat Morocco
- Place de Nid Aux Iris; Clinique des Iris; IVF Center IRIFIV; Casablanca Morocco
- Private Clinic of Human Reproduction and Endoscopic Surgery; Anfa Fertility Center; Casablanca Morroco
| | - B. Saadani
- Place de Nid Aux Iris; Clinique des Iris; IVF Center IRIFIV; Casablanca Morocco
| | - O. Sefrioui
- Private Clinic of Human Reproduction and Endoscopic Surgery; Anfa Fertility Center; Casablanca Morroco
| | - N. Louanjli
- Labomac IVF Centers and Clinical Laboratory Medicine; Casablanca Morocco
| | - H. Copin
- Reproductive Biology and Medical Cytogenetics Laboratory; Regional University Hospital & School of Medicine; Picardie University Jules Verne; Amiens France
| | - R. Cadi
- Laboratoire de Physiologie et Génétique Moléculaire (PGM); Département de Biologie; Faculté des Sciences Ain Chock; Université HASSAN II; Casablanca Morocco
| | - M. Benkhalifa
- Reproductive Biology and Medical Cytogenetics Laboratory; Regional University Hospital & School of Medicine; Picardie University Jules Verne; Amiens France
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Simon L, Aston KI, Emery BR, Hotaling J, Carrell DT. Sperm DNA damage output parameters measured by the alkaline Comet assay and their importance. Andrologia 2016; 49. [DOI: 10.1111/and.12608] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2016] [Indexed: 01/10/2023] Open
Affiliation(s)
- L. Simon
- Andrology and IVF Laboratory; Department of Surgery (Urology); University of Utah; Salt Lake City UT USA
| | - K. I. Aston
- Andrology and IVF Laboratory; Department of Surgery (Urology); University of Utah; Salt Lake City UT USA
| | - B. R. Emery
- Andrology and IVF Laboratory; Department of Surgery (Urology); University of Utah; Salt Lake City UT USA
| | - J. Hotaling
- Andrology and IVF Laboratory; Department of Surgery (Urology); University of Utah; Salt Lake City UT USA
| | - D. T. Carrell
- Andrology and IVF Laboratory; Department of Surgery (Urology); University of Utah; Salt Lake City UT USA
- Department of Obstetrics and Gynecology; University of Utah; Salt Lake City UT USA
- Department of Human Genetics; University of Utah; Salt Lake City UT USA
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Fortunato A, Boni R, Leo R, Nacchia G, Liguori F, Casale S, Bonassisa P, Tosti E. Vacuoles in sperm head are not associated with head morphology, DNA damage and reproductive success. Reprod Biomed Online 2016; 32:154-61. [DOI: 10.1016/j.rbmo.2015.10.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 10/23/2015] [Accepted: 10/28/2015] [Indexed: 11/16/2022]
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Boni R, Gallo A, Montanino M, Macina A, Tosti E. Dynamic changes in the sperm quality of Mytilus galloprovincialis under continuous thermal stress. Mol Reprod Dev 2015; 83:162-73. [PMID: 26663619 DOI: 10.1002/mrd.22604] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/08/2015] [Indexed: 01/05/2023]
Abstract
Global warming is an increasingly serious problem underlying ecological change in marine flora and fauna. Mytilus galloprovincialis is an intertidal species that colonizes coasts in moderate and warm climates, and can thus withstand extreme climatic conditions; however, it successfully reproduces only within a certain temperature range. The effects of prolonged exposure to 28 °C, a temperature unsuitable for breeding activity, on sperm quality were evaluated in this study. Such heat stress induced the following: a significant reduction in concentration; a biphasic pattern of motility and mitochondrial membrane potential that first increased, and then collapsed; a decrease in the intracellular calcium concentration; a rapid increase in lipid peroxidation that was normalized after the third week of heat stress; an increase in DNA fragmentation after the third week of heat stress; and atypical morphology (i.e., sperm with a globular head, asymmetrical tail, and acrosome loss). Currently, these elevated-temperature conditions are achieved along the Mediterranean coast during the late summer, when the reproductive activity of M. galloprovincialis is suspended after massive spawning in the spring. The increasing global temperature, however, may shift their breeding season, thus significantly impacting marine ecosystems and mussel production.
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Affiliation(s)
- Raffaele Boni
- Department of Sciences, University of Basilicata, Potenza, Italy
| | - Alessandra Gallo
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Melania Montanino
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Alberto Macina
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Elisabetta Tosti
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
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INFERTILIDAD MASCULINA Y FRAGMENTACIÓN DEL ADN ESPERMÁTICO: UN PROBLEMA ACTUAL. TIP REVISTA ESPECIALIZADA EN CIENCIAS QUÍMICO-BIOLÓGICAS 2015. [DOI: 10.1016/j.recqb.2015.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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36
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Luna D, Hilario R, Dueñas-Chacón J, Romero R, Zavala P, Villegas L, García-Ferreyra J. The IMSI Procedure Improves Laboratory and Clinical Outcomes Without Compromising the Aneuploidy Rate When Compared to the Classical ICSI Procedure. CLINICAL MEDICINE INSIGHTS. REPRODUCTIVE HEALTH 2015; 9:29-37. [PMID: 26609251 PMCID: PMC4644143 DOI: 10.4137/cmrh.s33032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/13/2015] [Accepted: 10/14/2015] [Indexed: 12/20/2022]
Abstract
PURPOSE The intracytoplasmic morphologically selected sperm injection (IMSI) procedure has been associated with better laboratory and clinical outcomes in assisted reproduction technologies. Less information is available regarding the relationship between embryo aneuploidy rate and the IMSI procedure. The aim of this study is to compare the clinical outcomes and chromosomal status of IMSI-derived embryos with those obtained from intracytoplasmic sperm injection (ICSI) in order to establish a clearer view of the benefits of IMSI in infertile patients. METHODS We retrospectively analyzed a total of 11 cycles of IMSI and 20 cycles of ICSI with preimplantation genetic diagnosis. The fertilization rate, cleavage rate, embryo quality, blastocyst development, aneuploidy rate, pregnancy rate, implantation rate, and miscarriage rate were compared between the groups. RESULTS Similar rates of fertilization (70% and 73%), cleavage (98% and 100%), and aneuploidy (76.9% and 70.9%) were observed in the IMSI and ICSI groups, respectively. The IMSI group had significantly more good quality embryos at day 3 (95% vs 73%), higher blastocyst development rates (33% vs 19%), and greater number of hatching blastocysts (43% vs 28%), cycles with at least one blastocyst at day 5 (55% vs 35%), and blastocysts with good trophoectoderm morphology (21% vs 6%) compared with the ICSI group (P < 0.001). Significantly higher implantation rates were observed in the IMSI group compared with the ICSI group (57% vs 27%; P < 0.05). Pregnancy and miscarriage rates were similar in both groups (80% vs 50% and 0% vs 33%, respectively). CONCLUSION The IMSI procedure significantly improves the embryo quality/development by increasing the implantation rates without affecting the chromosomal status of embryos. There is a tendency for the IMSI procedure to enhance the pregnancy rates and lower the miscarriage rates when compared with ICSI.
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Affiliation(s)
- Daniel Luna
- FERTILAB Laboratory of Assisted Reproduction, Lima, Perú
| | | | | | | | | | - Lucy Villegas
- FERTILAB Laboratory of Assisted Reproduction, Lima, Perú
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Singh MD, Thomas P, Owens J, Hague W, Fenech M. Potential role of folate in pre-eclampsia. Nutr Rev 2015; 73:694-722. [PMID: 26359215 DOI: 10.1093/nutrit/nuv028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Dietary deficiencies of folate and other B vitamin cofactors involved in one-carbon metabolism, together with genetic polymorphisms in key folate-methionine metabolic pathway enzymes, are associated with increases in circulating plasma homocysteine, reduction in DNA methylation patterns, and genome instability events. All of these biomarkers have also been associated with pre-eclampsia. The aim of this review was to explore the literature and identify potential knowledge gaps in relation to the role of folate at the genomic level in either the etiology or the prevention of pre-eclampsia. A systematic search strategy was designed to identify citations in electronic databases for the following terms: folic acid supplementation AND pre-eclampsia, folic acid supplementation AND genome stability, folate AND genome stability AND pre-eclampsia, folic acid supplementation AND DNA methylation, and folate AND DNA methylation AND pre-eclampsia. Forty-three articles were selected according to predefined selection criteria. The studies included in the present review were not homogeneous, which made pooled analysis of the data very difficult. The present review highlights associations between folate deficiency and certain biomarkers observed in various tissues of women at risk of pre-eclampsia. Further investigation is required to understand the role of folate in either the etiology or the prevention of pre-eclampsia.
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Affiliation(s)
- Mansi Dass Singh
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Philip Thomas
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Julie Owens
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - William Hague
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Michael Fenech
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia.
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Susilowati S, Triana IN, Malik A. The effects of insulin-like growth factor I (IGF-I) complex from seminal plasma on capacitation, membrane integrity and DNA fragmentation in goat spermatozoa. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2015. [DOI: 10.1016/j.apjr.2015.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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An integrated approach to male-factor subfertility: bridging the gap between fertility specialists trained in urology and gynaecology. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2015; 37:258-265. [PMID: 26001873 DOI: 10.1016/s1701-2163(15)30312-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Subfertile men and women are usually cared for by different clinicians, namely urologists and gynaecologists. While these doctors share each other's goals, they may not always appreciate the content or implications of their opposite number's clinical decisions; to some degree they may practice in "silos." We address this problem by reviewing the effectiveness of medical treatments for male factor subfertility in the context of female factors. The effectiveness of treatments for couples with male factor subfertility, other than IVF with ICSI, appears modest. However, data from randomized controlled trials suggest benefits from some treatments: clomiphene and tamoxifen for the male (common odds ratio for pregnancy [COR] 2.42; 95% CI 1.47 to 3.94), antioxidants (COR 4.18; 95% CI 2.65 to 6.59) and surgical management of a clinical varicocele (COR 2.39; 95% CI 1.56 to 3.66). Nevertheless, close attention to female age and the duration of subfertility help to avoid lost opportunity through delays in treatment when IVF with ICSI is indicated. Making treatment decisions squarely in the context of the couple's overall prognosis is key for optimal outcomes. Future trials of male fertility treatments should focus on pregnancy as the primary outcome, rather than less important surrogates such as sperm quality.
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Zhong HZ, Lv FT, Deng XL, Hu Y, Xie DN, Lin B, Mo ZN, Lin FQ. Evaluating γH2AX in spermatozoa from male infertility patients. Fertil Steril 2015; 104:574-81. [PMID: 26158906 DOI: 10.1016/j.fertnstert.2015.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To investigate whether γH2AX levels were different in the spermatozoa of healthy men compared with infertility patients, and to assess the possible correlations between γH2AX and conventional semen parameters and double-stranded breaks (DSBs) identified with the use of comet assay. DESIGN Prospective study. SETTING Clinical laboratory. PATIENT(S) Semen from 100 male infertile patients and 100 healthy sperm donors. INTERVENTION(S) Human sperm samples were analyzed in terms of World Health Organization parameters. The γH2AX levels were detected by means of flow cytometry. DSBs of sperm were detected by means of comet assay. Morphology slides were made and the sperm morphology assessed according to strict criteria. MAIN OUTCOME MEASURE(S) Conventional semen analyses, γH2AX levels in sperm, DNA DSBs in sperm, and correlations among γH2AX, conventional semen analyses, and DSBs. RESULT(S) Concentration, viability, motility, and normal sperm morphology were significantly lower in male infertility patients compared with healthy men. Also, γH2AX levels and the number of DSBs were significantly higher in the sperm of infertile subjects compared with healthy men. γH2AX levels correlated negatively with conventional semen parameters and positively with DSBs. A threshold γH2AX level of 18.55% was identified as a cutoff value to discriminate infertile subjects from fertile control subjects with a specificity of 86.0% and a sensitivity of 83.0%. The positive and negative predictive values of the 18.55% γH2AX threshold were high: 87.7% and 85.5%, respectively. CONCLUSION(S) γH2AX levels were higher in the sperm of male infertility patients than in healthy men. γH2AX levels in sperm, as evaluated with the use of flow cytometry, might be a useful biomarker for evaluating DSBs in human spermatozoa.
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Affiliation(s)
- Hui-zhi Zhong
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China
| | - Fu-tong Lv
- Research Center for Population and Family Planning of Guangxi Zhuang Autonomous Region, Guangxi, People's Republic of China
| | - Xue-lian Deng
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China
| | - Ying Hu
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China
| | - Dan-ni Xie
- Research Center for Population and Family Planning of Guangxi Zhuang Autonomous Region, Guangxi, People's Republic of China
| | - Bin Lin
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China
| | - Zeng-nan Mo
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China
| | - Fa-quan Lin
- First Affiliated Hospital of Guangxi Medical University, Guangxi, People's Republic of China.
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Sá R, Cunha M, Rocha E, Barros A, Sousa M. Sperm DNA fragmentation is related to sperm morphological staining patterns. Reprod Biomed Online 2015; 31:506-15. [PMID: 26278809 DOI: 10.1016/j.rbmo.2015.06.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 06/16/2015] [Accepted: 06/23/2015] [Indexed: 10/23/2022]
Abstract
In this prospective comparative study, sperm DNA fragmentation (sDNAfrag) was compared at each step of a sequential semen preparation, with semen parameters according to their degree of severity. At each step (fractions) of the sequential procedure, sDNAfrag was determined: fresh (Raw), after gradient centrifugation, washing, and swim-up (SU) for 70 infertile men enrolled in intracytoplasmic sperm injection cycles. sDNAfrag significantly (P = 0.04; P < 0.0001) decreased throughout the steps of semen preparation, with centrifugation and washing not increasing it. A negative correlation to sperm motility was observed in Raw and SU fractions, and a higher sDNAfrag was observed in samples with lower semen quality. Our results confirm that the steps of the sequential procedure do not compromise sperm DNA integrity and progressively decreased sDNAfrag regardless of the sperm abnormality and that semen parameters with lower quality present higher sDNAfrag. Four distinct patterns were observed, of which the entire sperm head staining was the pattern most expressed in all studied fractions. Additionally, the sperm head gene-rich region staining pattern was reduced by the procedure. This suggests that pattern quantification might be a useful adjunct when performing sDNAfrag testing for male infertility.
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Affiliation(s)
- Rosália Sá
- Department of Microscopy, Laboratory of Cell Biology, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto (UP), Porto, Portugal.
| | - Mariana Cunha
- Centre for Reproductive Genetics Prof. Alberto Barros (CGR-ABarros), 4100-009 Porto, Portugal
| | - Eduardo Rocha
- Department of Microscopy, Laboratory of Histology and Embryology, ICBAS-UP, 4050-313 Porto, Portugal
| | - Alberto Barros
- Centre for Reproductive Genetics Prof. Alberto Barros (CGR-ABarros), 4100-009 Porto, Portugal; Department of Genetics, Faculty of Medicine, UP, 4200-319 Porto, Portugal
| | - Mário Sousa
- Department of Microscopy, Laboratory of Cell Biology, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto (UP), Porto, Portugal
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Evgeni E, Lymberopoulos G, Gazouli M, Asimakopoulos B. Conventional semen parameters and DNA fragmentation in relation to fertility status in a Greek population. Eur J Obstet Gynecol Reprod Biol 2015; 188:17-23. [PMID: 25770843 DOI: 10.1016/j.ejogrb.2015.02.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 01/22/2015] [Accepted: 02/19/2015] [Indexed: 11/30/2022]
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A simple sperm DNA toroid integrity test and risk of miscarriage. BIOMED RESEARCH INTERNATIONAL 2015; 2015:780983. [PMID: 25649376 PMCID: PMC4310444 DOI: 10.1155/2015/780983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 09/17/2014] [Indexed: 12/22/2022]
Abstract
Current methods of analyzing sperm chromatin competency overlook the inner sperm compartment which is inaccessible to probes and reagents. By breaking the molecular protamine disulfide bridges, the DNA toroids are exposed to integrity analysis. The aim was to develop a simple nuclear toroid test and determine its association with fertilization, pregnancy, and miscarriage. The approach involved treating washed sperm remaining after ICSI procedures (N=35 cases) with acidified Triton X-100 and dithiothreitol (DTT) before Diff-Quik staining. Percentages of sperm with normal chromatin indicated by light-colored nuclei were assessed. The toroid integrity test showed more sperm with normal chromatin in the pregnant group (73.6±1.7%, mean±SEM) when compared with the miscarriage (51.2±6.6%) or nonpregnant groups (60.9±4.8%). Furthermore, the toroid results were correlated with ICSI fertilization (R=0.32, P=0.04) and pregnancy outcome (pregnant cases 73.6±1.7% versus nonpregnant 58.0±3.9%, P=0.001). ROC calculated cut-off was >70.0% for normal toroid integrity (sensitivity 0.98, specificity 0.33, and diagnostic accuracy 78.3%). An association between normal sperm toroid integrity and miscarriage was evident when the staining procedure included acidified detergent DTT pretreatment.
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Evgeni E, Lymberopoulos G, Touloupidis S, Asimakopoulos B. Sperm nuclear DNA fragmentation and its association with semen quality in Greek men. Andrologia 2015; 47:1166-74. [PMID: 25586471 DOI: 10.1111/and.12398] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2014] [Indexed: 12/15/2022] Open
Abstract
Due to the limitations of conventional semen analysis in predicting a man's fertility potential, sperm DNA fragmentation was recently introduced as a novel marker of sperm quality. This prospective study was undertaken to investigate the associations between conventional seminal parameters and DNA fragmentation in Greek men. A total of 669 subject data were evaluated in two groups, normozoospermic (n = 184) and non-normozoospermic (n = 485), according to the WHO 2010 (WHO Laboratory Manual for the Examination and Processing of Human Semen, 5th edn. World Health Organization), reference limits. For all the subjects, semen volume, sperm concentration, total count, rapid and total progressive motility and morphology were recorded following the WHO 2010 methods and DNA fragmentation was assessed by the sperm chromatin dispersion assay. An inverse correlation was established between DNA fragmentation and all conventional seminal parameters except semen volume in men with seminal profiles below the reference limits, with statistical significance for rapid and total progressive motility. Normozoospermic men exhibited lower levels of DNA fragmentation than their non-normozoospermic counterparts, even though the values were not always below 30%. DNA fragmentation testing and traditional semen analysis should therefore be considered as complementary diagnostic tools in a comprehensive evaluation of male infertility.
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Affiliation(s)
- E Evgeni
- Seminology Laboratory G. Lymberopoulos, Athens, Greece.,Laboratory of Physiology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Thrace, Greece
| | | | - S Touloupidis
- Clinic of Urology, General University Hospital of Alexandroupolis, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Thrace, Greece
| | - B Asimakopoulos
- Laboratory of Physiology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Thrace, Greece
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Esfandiari N, de Lamirande E, Gukturk A, San Gabriel MC, Nazemian Z, Burjaq H, Casper RF, Zini A. Seminal hyperviscosity is not associated with semenogelin degradation or sperm deoxyribonucleic acid damage: a prospective study of infertile couples. Fertil Steril 2014; 101:1599-603. [DOI: 10.1016/j.fertnstert.2014.02.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 02/17/2014] [Accepted: 02/26/2014] [Indexed: 11/25/2022]
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Belloc S, Hazout A, Zini A, Merviel P, Cabry R, Chahine H, Copin H, Benkhalifa M. How to overcome male infertility after 40: Influence of paternal age on fertility. Maturitas 2014; 78:22-9. [DOI: 10.1016/j.maturitas.2014.02.011] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/19/2014] [Accepted: 02/21/2014] [Indexed: 12/13/2022]
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Ribas-Maynou J, García-Peiró A, Martínez-Heredia J, Fernández-Encinas A, Abad C, Amengual MJ, Navarro J, Benet J. Nuclear degraded sperm subpopulation is affected by poor chromatin compaction and nuclease activity. Andrologia 2014; 47:286-94. [DOI: 10.1111/and.12258] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2014] [Indexed: 01/03/2023] Open
Affiliation(s)
- J. Ribas-Maynou
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - A García-Peiró
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
- Centro de Infertilidad Masculina y Análisis de Barcelona (CIMAB); Edifici Eureka, PBM5; Parc de Recerca de la UAB (PRUAB); Bellaterra Spain
| | - J. Martínez-Heredia
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - A. Fernández-Encinas
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - C. Abad
- Servei d'Urologia; Corporació Sanitària Parc Taulí; Institut Universitari Parc Taulí - UAB; Sabadell Spain
| | - M. J. Amengual
- UDIAT, Centre Diagnòstic; Corporació Sanitària Parc Taulí; Institut Universitari Parc Taulí - UAB; Sabadell Spain
| | - J. Navarro
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - J. Benet
- Departament de Biologia Cellular; Fisiologia i Immunologia; Universitat Autònoma de Barcelona; Bellaterra Spain
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Zini A, Albert O, Robaire B. Assessing sperm chromatin and DNA damage: clinical importance and development of standards. Andrology 2014; 2:322-5. [DOI: 10.1111/j.2047-2927.2014.00193.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 01/16/2014] [Accepted: 01/17/2014] [Indexed: 01/09/2023]
Affiliation(s)
- A. Zini
- Division of Urology, Department of Surgery; McGill University; Montreal QC Canada
| | - O. Albert
- Departments of Pharmacology & Therapeutics and of Obstetrics & Gynecology; McGill University; Montreal QC Canada
| | - B. Robaire
- Departments of Pharmacology & Therapeutics and of Obstetrics & Gynecology; McGill University; Montreal QC Canada
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Assessment of the reproductive toxicity of inhalation exposure to ethyl tertiary butyl ether in male mice with normal, low active and inactive ALDH2. Arch Toxicol 2014; 88:1007-21. [PMID: 24448831 DOI: 10.1007/s00204-014-1192-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 01/09/2014] [Indexed: 01/08/2023]
Abstract
No data are available regarding aldehyde dehydrogenase 2 (ALDH2) polymorphisms related to the reproductive toxicity possibly caused by ethyl tertiary butyl ether (ETBE). In this study, two inhalation experiments were performed in Aldh2 knockout (KO), heterogeneous (HT) and wild type (WT) C57BL/6 male mice exposed to ETBE, and the data about general toxicity, testicular histopathology, sperm head numbers, sperm motility and sperm DNA damage were collected. The results showed that the 13-week exposure to 0, 500, 1,750 and 5,000 ppm ETBE significantly decreased sperm motility and increased levels of sperm DNA strand breaks and 8-hydroxy-deoxyguanosine in both WT and KO mice, the effects were found in 1,750 and 5,000 ppm groups of WT mice, and all of the three exposed groups of KO mice compared to the corresponding control; furthermore, ETBE also caused decrease in the relative weights of testes and epididymides, the slight atrophy of seminiferous tubules of testis and reduction in sperm numbers of KO mice exposed to ≥500 ppm. In the experiment of exposure to lower concentrations of ETBE (0, 50, 200 and 500 ppm) for 9 weeks, the remarkable effects of ETBE on sperm head numbers, sperm motility and sperm DNA damage were further observed in KO and HT mice exposed to 200 ppm ETBE, but not in WT mice. Our findings suggested that only exposure to high concentrations of ETBE might result in reproductive toxicity in mice with normal active ALDH2, while low active and inactive ALDH2 enzyme significantly enhanced the ETBE-induced reproductive toxicity in mice, even exposed to low concentrations of ETBE, mainly due to the accumulation of acetaldehyde as a primary metabolite of ETBE.
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Gómez-Torres MJ, García EM, Guerrero J, Girela JL, Ten J, Bernabeu R, De Juan J. Estudio de los daños estructurales tras la inmovilización espermática previa a la microinyección intracitoplasmática de espermatozoides en sujetos teratozoospérmicos. Rev Int Androl 2014. [DOI: 10.1016/j.androl.2013.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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