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Komatsu K, Iwasaki T, Murata K, Yamashiro H, Goh VST, Nakayama R, Fujishima Y, Ono T, Kino Y, Simizu Y, Takahashi A, Shinoda H, Ariyoshi K, Kasai K, Suzuki M, Palmerini MG, Belli M, Macchiarelli G, Oka T, Fukumoto M, Yoshida MA, Nakata A, Miura T. Morphological reproductive characteristics of testes and fertilization capacity of cryopreserved sperm after the Fukushima accident in raccoon (Procyon lotor). Reprod Domest Anim 2021; 56:484-497. [PMID: 33372327 DOI: 10.1111/rda.13887] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/27/2020] [Indexed: 12/17/2022]
Abstract
Since the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, we have established an archive system of livestock and wild animals from the surrounding ex-evacuation zone. Wildlife within the alert zone have been exposed to low-dose-rate (LDR) radiation for a long continuous time. In this study, we analysed the morphological characteristics of the testes and in vitro fertilization (IVF) capacity of cryopreserved sperm of racoons from the ex-evacuation zone of the FDNPP accident. The radioactivity of caesium-137 (137 Cs) was measured by gamma-ray spectrometry, and the measured radioactivity concentration was 300-6,630 Bq/kg in the Fukushima raccoons. Notably, normal spermatogenesis was observed in the seminiferous tubules of the testes, with the germinal epithelium composed of a spermatogenic cell lineage with no evident ultrastructural alterations; freeze-thawing sperm penetration ability was confirmed using the interspecific zona pellucida-free mouse oocytes IVF assays. This study revealed that the chronic and LDR radiation exposure associated with the FDNPP accident had no adverse effect on the reproductive characteristics and functions of male raccoons.
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Affiliation(s)
- Kazuki Komatsu
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Tsugumi Iwasaki
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Kosuke Murata
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Hideaki Yamashiro
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | | | - Ryo Nakayama
- Graduate School of Health Sciences, Hirosaki University, Aomori, Japan
| | - Yohei Fujishima
- Department of Radiation Biology, Tohoku University School of Medicine, Sendai, Japan
| | - Takumi Ono
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - Yasushi Kino
- Graduate School of Science, Tohoku University, Sendai, Japan
| | | | | | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Kentaro Ariyoshi
- Integrated Center for Science and Humanities, Fukushima Medical University, Fukushima, Japan
| | - Kosuke Kasai
- Graduate School of Health Sciences, Hirosaki University, Aomori, Japan
| | - Masatoshi Suzuki
- International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - Maria Grazia Palmerini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Manuel Belli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Guido Macchiarelli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Toshitaka Oka
- Sector of Nuclear Science Research, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Manabu Fukumoto
- RIKEN Center for Advanced Intelligence Project, Pathology Informatics Team, Saitama, Japan
| | - Mitsuaki A Yoshida
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Aomori, Japan
| | - Akifumi Nakata
- Department of Life Science, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Hokkaido, Japan
| | - Tomisato Miura
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Aomori, Japan
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Ibrahim Y, Einerson B, Carrell DT, Emery BR, Johnstone E. The hamster egg penetration test may decrease intracytoplasmic sperm injection utilization while maintaining high conventional fertilization rates. Asian J Androl 2021; 23:11-15. [PMID: 32436865 PMCID: PMC7831835 DOI: 10.4103/aja.aja_18_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
This was a cohort study of in vitro fertilization (IVF) subjects at the University of Utah, Salt Lake City (UT, USA) utilizing partner sperm. Cycles where both the hamster egg penetration test (HEPT) and semen analysis were performed within 2 years prior to IVF cycles were stratified into four groups based on a normal or an abnormal HEPT and morphology. The mean conventional and intracytoplasmic sperm injection (ICSI) fertilization rates were calculated in each group. We performed a univariate analysis on the primary outcome comparing clinically interesting subjects. We performed a cost-effectiveness analysis of a policy of HEPT versus universal ICSI in couples with an abnormal morphology. Among patients with a normal HEPT, there was no difference in the mean conventional fertilization rates between those with a normal and an abnormal morphology. There was no difference in the mean conventional fertilization rates between subjects with a normal morphology without a hamster test and those with a normal HEPT without a morphology assessment. In 1000 simulated cycles with an abnormal morphology, a policy of HEPT was cost saving compared to universal ICSI, yet produced similar fertilization rates. The HEPT is similar to the World Health Organization edition 5 (WHO-5) morphology in predicting successful conventional fertilization while allowing decreased utilization of ICSI. A policy of HEPT for males with abnormal morphology saves cost in selecting couples for a fertilization method.
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Affiliation(s)
- Yetunde Ibrahim
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Brett Einerson
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Douglas T Carrell
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA.,Division of Urology, Department of Surgery, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA.,Department of Human Genetics, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Benjamin R Emery
- Division of Urology, Department of Surgery, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Erica Johnstone
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
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Dave P, Farber N, Vij S. Conventional semen analysis and advanced sperm function tests in diagnosis and management of varicocele. Andrologia 2020; 53:e13629. [PMID: 32369238 DOI: 10.1111/and.13629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/06/2020] [Accepted: 04/10/2020] [Indexed: 12/17/2022] Open
Abstract
Clinical varicoceles are a common cause of male infertility and affect sperm parameters as measured in a conventional semen analysis. Varicocelectomy has been shown in prospective studies to improve semen parameters in men with a clinical varicocele. Clinical varicoceles are also a well-known source of oxidative stress which may affect the quality of spermatozoa. Spermatozoa are particularly susceptible to oxidative stress due to a limited capacity for DNA repair. The susceptibility of spermatozoa to oxidative stress is modulated by a balance between ROS and antioxidants, which can be quantified by various laboratory assays. Varicocelectomy has been consistently shown to reduce both ROS and sperm DNA fragmentation, and various assays should be utilised in the diagnosis and treatment of infertile men with a clinical varicocele.
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Affiliation(s)
- Priya Dave
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Nicholas Farber
- Department of Urology, Cleveland Clinic Foundation, Glickman Urological & Kidney Institute, Cleveland, OH, USA
| | - Sarah Vij
- Department of Urology, Cleveland Clinic Foundation, Glickman Urological & Kidney Institute, Cleveland, OH, USA
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Zhong Y, Liu DL, Ahmed MMM, Li PH, Zhou XL, Xie QD, Xu XQ, Han TT, Hou ZW, Zhong CY, Huang JH, Zeng F, Huang TH. Host genes regulate transcription of sperm-introduced hepatitis B virus genes in embryo. Reprod Toxicol 2017; 73:158-166. [PMID: 28822827 PMCID: PMC7127588 DOI: 10.1016/j.reprotox.2017.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 08/07/2017] [Accepted: 08/10/2017] [Indexed: 02/05/2023]
Abstract
Hepatitis B virus (HBV) can invade the male germline, and sperm-introduced HBV genes could be transcribed in embryo. This study was to explore whether viral gene transcription is regulated by host genes. Embryos were produced by in vitro fertilization of hamster oocytes with human sperm containing the HBV genome. Total RNA extracted from test and control embryos were subjected to SMART-PCR, SSH, microarray hybridization, sequencing and BLAST analysis. Twenty-nine sequences showing significant identity to five human gene families were identified, with CSH2, EIF4G2, PCBD2, PSG4 and TTN selected to represent target genes. Using qRT-PCR, when CSH2 and PCBD2 (or EIF4G2, PSG4 and TTN) were silenced by RNAi, transcriptional levels of HBV s and x genes decreased (or increased). This is the first report that host genes participate in regulation of sperm-introduced HBV gene transcription in embryo, which is critical to prevent negative impact of HBV infection on early embryonic development.
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Affiliation(s)
- Ying Zhong
- Jinxin Research Institute for Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, 66 Jinxiu Road, Chengdu 610066, China.
| | - Dong-Ling Liu
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Mohamed Morsi M Ahmed
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Peng-Hao Li
- Jinxin Research Institute for Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, 66 Jinxiu Road, Chengdu 610066, China.
| | - Xiao-Ling Zhou
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Qing-Dong Xie
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Xiao-Qing Xu
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Ting-Ting Han
- Jinxin Research Institute for Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, 66 Jinxiu Road, Chengdu 610066, China.
| | - Zhi-Wei Hou
- Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
| | - Chen-Yao Zhong
- Faculty of Science and Engineering, Paul Sabatier University-Toulouse III, 118 Route de Narbonne, Toulouse 31062, France.
| | - Ji-Hua Huang
- Jinxin Research Institute for Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, 66 Jinxiu Road, Chengdu 610066, China.
| | - Fei Zeng
- The First Affiliated Hospital, Shantou University Medical College, 57 Changping Road, Shantou 515041, China.
| | - Tian-Hua Huang
- Jinxin Research Institute for Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, 66 Jinxiu Road, Chengdu 610066, China; Research Center for Reproductive Medicine, Shantou University Medical College, 22 Xinling Road, Shantou 515041, China.
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5
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Bianchi E, Wright GJ. Cross-species fertilization: the hamster egg receptor, Juno, binds the human sperm ligand, Izumo1. Philos Trans R Soc Lond B Biol Sci 2015; 370:20140101. [PMID: 25533103 PMCID: PMC4275915 DOI: 10.1098/rstb.2014.0101] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Fertilization is the culminating event in sexual reproduction and requires the recognition and fusion of the haploid sperm and egg to form a new diploid organism. Specificity in these recognition events is one reason why sperm and eggs from different species are not normally compatible. One notable exception is the unusual ability of zona-free eggs from the Syrian golden hamster (Mesocricetus auratus) to recognize and fuse with human sperm, a phenomenon that has been exploited to assess sperm quality in assisted fertility treatments. Following our recent finding that the interaction between the sperm and egg recognition receptors Izumo1 and Juno is essential for fertilization, we now demonstrate concordance between the ability of Izumo1 and Juno from different species to interact, and the ability of their isolated gametes to cross-fertilize each other in vitro. In particular, we show that Juno from the golden hamster can directly interact with human Izumo1. These data suggest that the interaction between Izumo1 and Juno plays an important role in cross-species gamete recognition, and may inform the development of improved prognostic tests that do not require the use of animals to guide the most appropriate fertility treatment for infertile couples.
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Affiliation(s)
- Enrica Bianchi
- Cell Surface Signalling Laboratory, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - Gavin J Wright
- Cell Surface Signalling Laboratory, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
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