1
|
Cheng GP, Wang YF, Li YY, Guo SM, Li HG, Ji DM, Yi NH, Zhou LQ. Deficiency of nucleosome-destabilizing factor GLYR1 dampens spermatogenesis in mice. Mol Cell Endocrinol 2024; 586:112194. [PMID: 38395189 DOI: 10.1016/j.mce.2024.112194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Aberrant sperm morphology hinders sperm motility and causes male subfertility. Spermatogenesis, a complex process in male germ cell development, necessitates precise regulation of numerous developmental genes. However, the regulatory pathways involved in this process remain partially understood. We have observed the widespread expression of Glyr1, the gene encoding a nucleosome-destabilizing factor, in mouse testicular cells. Our study demonstrates that mice experiencing Glyr1 depletion in spermatogenic cells exhibit subfertility characterized by a diminished count and motility of spermatozoa. Furthermore, the rate of sperm malformation significantly increases in the absence of Glyr1, with a predominant occurrence of head and neck malformation in spermatozoa within the cauda epididymis. Additionally, a reduction in spermatocyte numbers across different meiotic stages is observed, accompanied by diminished histone acetylation in spermatogenic cells upon Glyr1 depletion. Our findings underscore the crucial roles of Glyr1 in mouse spermiogenesis and unveil novel insights into the etiology of male reproductive diseases.
Collapse
Affiliation(s)
- Gui-Ping Cheng
- Department of Women Health Care, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu-Fan Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan-Yuan Li
- Department of Gynecology and Obstetrics, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shi-Meng Guo
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hong-Gang Li
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong-Mei Ji
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Anhui, China.
| | - Nian-Hua Yi
- Department of Women Health Care, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Li-Quan Zhou
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Anhui, China.
| |
Collapse
|
2
|
Zhang Y, Tang J, Wang X, Sun Y, Yang T, Shen X, Yang X, Shi H, Sun X, Xin A. Loss of ACTL7A causes small head sperm by defective acrosome-acroplaxome-manchette complex. Reprod Biol Endocrinol 2023; 21:82. [PMID: 37667331 PMCID: PMC10476415 DOI: 10.1186/s12958-023-01130-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/21/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND Actin-like 7 A (ACTL7A) is essential for acrosome formation, fertilization and early embryo development. ACTL7A variants cause acrosome detachment responsible for male infertility and early embryonic arrest. In this study, we aim to explore the additional functions of ACTL7A beyond the process of acrosome biogenesis and investigate the possible underlying mechanisms. METHODS Nuclear morphology analysis was used to observe the sperm head shape of ACTL7A-mutated patients. Actl7a knock-out (KO) mouse model was generated. Immunofluorescence and transmission electron microscopy (TEM) were performed to analyze the structure of spermatids during spermiogenesis. Tandem mass tags labeling quantitative proteomics strategy was employed to explore the underlying molecular mechanisms. The expression levels of key proteins in the pathway were analyzed by western blotting. Intracytoplasmic sperm injection (ICSI)-artificial oocyte activation (AOA) technology was utilized to overcome fertilization failure in male mice with a complete knockout of Actl7a. RESULTS The new phenotype of small head sperm associated with loss of ACTL7A in patients was discovered, and further confirmed in Actl7a-KO mice. Immunofluorescence and TEM analyses revealed that the deletion of ACTL7A damaged the formation of acrosome-acroplaxome-manchette complex, leading to abnormalities in the shaping of sperm heads. Moreover, a proteomic analysis of testes from WT and Actl7a-KO mice revealed that differentially expressed genes were notably enriched in PI3K/AKT/mTOR signaling pathway which is strongly associated with autophagy. Inhibition of autophagy via PI3K/AKT/mTOR signaling pathway activation leading to PDLIM1 accumulation might elucidate the hindered development of manchette in Actl7a-KO mice. Remarkably, AOA successfully overcame fertilization failure and allowed for the successful production of healthy offspring from the Actl7a complete knockout male mice. CONCLUSIONS Loss of ACTL7A causes small head sperm as a result of defective acrosome-acroplaxome-manchette complex via autophagy inhibition. ICSI-AOA is an effective technique to rescue male infertility resulting from ACTL7A deletion. These findings provide essential evidence for the diagnosis and treatment of patients suffering from infertility.
Collapse
Affiliation(s)
- Yini Zhang
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Jianan Tang
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China
| | - Xuemei Wang
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China
| | - Yisi Sun
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China
| | - Tianying Yang
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Xiaorong Shen
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China
| | - Xinyue Yang
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Huijuan Shi
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China.
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai, 200011, China.
| | - Aijie Xin
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation,Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), School of Pharmacy, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
3
|
Li Z, Zhang X, Xie S, Liu X, Fei C, Huang X, Tang Y, Zhou LQ. H3K36me2 methyltransferase NSD2 orchestrates epigenetic reprogramming during spermatogenesis. Nucleic Acids Res 2022; 50:6786-6800. [PMID: 35736136 PMCID: PMC9262605 DOI: 10.1093/nar/gkac533] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 06/04/2022] [Accepted: 06/10/2022] [Indexed: 02/07/2023] Open
Abstract
Spermatogenesis is precisely controlled by sophisticated gene expression programs and is driven by epigenetic reprogramming, including histone modification alterations and histone-to-protamine transition. Nuclear receptor binding SET domain protein 2 (Nsd2) is the predominant histone methyltransferase catalyzing H3K36me2 and its role in male germ cell development remains elusive. Here, we report that NSD2 protein is abundant in spermatogenic cells. Conditional loss of Nsd2 in postnatal germ cells impaired fertility owing to apoptosis of spermatocytes and aberrant spermiogenesis. Nsd2 deficiency results in dysregulation of thousands of genes and remarkable reduction of both H3K36me2 and H3K36me3 in spermatogenic cells, with H3K36me2 occupancy correlating positively with expression of germline genes. Nsd2 deficiency leads to H4K16ac elevation in spermatogenic cells, probably through interaction between NSD2 and PSMA8, which regulates acetylated histone degradation. We further reveal that Nsd2 deficiency impairs EP300-induced H4K5/8ac, recognized by BRDT to mediate the eviction of histones. Accordingly, histones are largely retained in Nsd2-deficient spermatozoa. In addition, Nsd2 deficiency enhances expression of protamine genes, leading to increased protamine proteins in Nsd2-deficient spermatozoa. Our findings thus reveal a previously unappreciated role of the Nsd2-dependent chromatin remodeling during spermatogenesis and provide clues to the molecular mechanisms in epigenetic abnormalities impacting male reproductive health.
Collapse
Affiliation(s)
- Zhiming Li
- Correspondence may also be addressed to Zhiming Li.
| | | | - Shiming Xie
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Xingping Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Caifeng Fei
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Xunbin Huang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Yunge Tang
- Correspondence may also be addressed to Yunge Tang.
| | - Li-quan Zhou
- To whom correspondence should be addressed. Tel: +86 27 83692651; Fax: +86 27 83692651;
| |
Collapse
|
4
|
Keshtgar S, Ghani E. Impact of calcium and reactive oxygen species on human sperm function: Role of NOX5. Andrologia 2022; 54:e14470. [PMID: 35679508 DOI: 10.1111/and.14470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/08/2022] [Accepted: 04/27/2022] [Indexed: 11/29/2022] Open
Abstract
NOX5 is introduced as a new therapeutic target for infertility treatment. This study aimed to compare the basal and stimulated reactive oxygen species (ROS) production and sperm function in human teratozoospermic (n = 15) and normozoospermic (n = 17) semen samples following calcium overload and NOX5 activation. Washed spermatozoa incubated for 1 h under five various conditions: control group, adding a calcium ionophore A23187, phorbol myristate acetate (PMA), A23187 + PMA, and diphenylene iodonium (DPI) + A23187 + PMA. ROS generation was measured immediately after treatment for 30 min. Motility, viability, acrosome reaction, and apoptosis were evaluated after 1-h incubation. ROS production significantly increased when A23187 or PMA was added to the sperm medium. DPI had suppressive effects on ROS generation. Progressive and total motility significantly decreased following calcium elevation and NOX5 activation, which was somewhat returned by DPI. Necrotic and live cells in teratozoospermia was, respectively, higher and lower than normozoospermia samples. Incubation with A23187 significantly increased the percentage of early and late apoptosis. Teratozoosperm are more vulnerable than normal spermatozoa, and produce more basal and stimulated ROS. It seems that calcium overload induces apoptosis in spermatozoa and loss of viability through MPT pore opening and increased intracellular ROS.
Collapse
Affiliation(s)
- Sara Keshtgar
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Esmaeel Ghani
- Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.,Department of Physiology, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| |
Collapse
|
5
|
Fonseca ACS, Barreiro M, Tomé A, Vale-Fernandes E. Male Reproductive Health - study of a sperm donor population. JBRA Assist Reprod 2022; 26:247-254. [PMID: 35389042 PMCID: PMC9118971 DOI: 10.5935/1518-0557.20210064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 09/23/2016] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE Every individual has the right to a safe and satisfactory sex and reproductive life. Therefore, several countries have made efforts to make Reproductive Health resources available to their populations. However, few results have been published regarding the policies implemented in Portugal. This study looked into the reproductive health status of the Portuguese male population. METHODS Sperm donor candidates from the Portuguese Public Gamete Bank registered between 2011 and 2018 were included in the study. Spermogram findings were evaluated with respect to sociodemographic and risk factors. RESULTS This is the first study performed in this population. We found that sperm quality has decreased throughout the last nine years, and that spermatozoa progressive motility is inversely correlated with the body mass index. An association between drug use and decreased sperm pH was also found. CONCLUSIONS Changes in sperm quality have important consequences in male fertility. Most of the identified causes of decreased sperm quality are modifiable factors and should therefore be addressed since an early age.
Collapse
Affiliation(s)
- Ana Catarina Silva Fonseca
- USF Serpa Pinto, ACeS Grande Porto V - Porto Ocidental, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Márcia Barreiro
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Centro de Procriação Medicamente Assistida / Banco Público de Gâmetas, Centro Materno-Infantil do Norte Dr. Albino Aroso (CMIN), Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
- Departamento da Mulher e da Medicina Reprodutiva, Centro Materno-Infantil do Norte Dr. Albino Aroso (CMIN), Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
| | - António Tomé
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Departamento da Mulher e da Medicina Reprodutiva, Centro Materno-Infantil do Norte Dr. Albino Aroso (CMIN), Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
| | - Emídio Vale-Fernandes
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Centro de Procriação Medicamente Assistida / Banco Público de Gâmetas, Centro Materno-Infantil do Norte Dr. Albino Aroso (CMIN), Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
- Departamento da Mulher e da Medicina Reprodutiva, Centro Materno-Infantil do Norte Dr. Albino Aroso (CMIN), Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
- Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| |
Collapse
|
6
|
Nygaard MB, Herlihy AS, Jeanneau C, Nielsen JE, Bennett EP, Jørgensen N, Clausen H, Mandel U, Rajpert-De Meyts E, Almstrup K. Expression of the O-Glycosylation Enzyme GalNAc-T3 in the Equatorial Segment Correlates with the Quality of Spermatozoa. Int J Mol Sci 2018; 19:E2949. [PMID: 30262754 PMCID: PMC6212898 DOI: 10.3390/ijms19102949] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 09/21/2018] [Accepted: 09/25/2018] [Indexed: 02/04/2023] Open
Abstract
We question whether the expression of GalNAc-T3, the only known O-GalNAc-transferase present in germ cells, is correlated with qualitative and functional parameters of spermatozoa. We investigated the expression of GalNAc-T3 in ejaculated spermatozoa with immunocytochemistry in swim-up purified and acrosome-reacted spermatozoa from quality-control semen donors and in semen samples from 206 randomly selected men representing a broad spectrum of semen quality. Using donor ejaculates and immunofluorescence detection we found that expression of GalNAc-T3 and the presence of the immature O-glycans Tn and T localized to the equatorial segment of spermatozoa. The proportion of GalNAc-T3-positive spermatozoa in the ejaculate increased after swim-up and appeared unaffected by induction of acrosomal exocytosis. The fraction of spermatozoa with equatorial expression of GalNAc-T3 correlated with classical semen parameters (concentration p = 9 × 10-6, morphology p = 7 × 10-8, and motility p = 1.8 × 10-5) and was significantly lower in men with oligoteratoasthenozoospermia (p = 0.0048). In conclusion, GalNAc-T3 was highly expressed by motile spermatozoa and the expression correlated positively with the classical semen parameters. Therefore, GalNAc-T3 expression seems related to the quality of the spermatozoa, and we propose that reduced expression of GalNAc-T3 may lead to impaired O-glycosylation of proteins and thereby abnormal maturation and reduced functionality of the spermatozoa.
Collapse
Affiliation(s)
- Marie B Nygaard
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
- The Fertility Clinic, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| | - Amy S Herlihy
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| | - Charlotte Jeanneau
- Copenhagen Center for Glycomics, Departments of Cellular and Molecular Medicine and Odontology, Faculty of health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark.
| | - John E Nielsen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| | - Eric Paul Bennett
- Copenhagen Center for Glycomics, Departments of Cellular and Molecular Medicine and Odontology, Faculty of health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark.
| | - Niels Jørgensen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Departments of Cellular and Molecular Medicine and Odontology, Faculty of health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark.
| | - Ulla Mandel
- Copenhagen Center for Glycomics, Departments of Cellular and Molecular Medicine and Odontology, Faculty of health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark.
| | - Ewa Rajpert-De Meyts
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| | - Kristian Almstrup
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.
| |
Collapse
|
7
|
Razavi SM, Sabbaghian M, Jalili M, Divsalar A, Wolkenhauer O, Salehzadeh-Yazdi A. Comprehensive functional enrichment analysis of male infertility. Sci Rep 2017; 7:15778. [PMID: 29150651 PMCID: PMC5693951 DOI: 10.1038/s41598-017-16005-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 11/06/2017] [Indexed: 02/07/2023] Open
Abstract
Spermatogenesis is a multifactorial process that forms differentiated sperm cells in a complex microenvironment. This process involves the genome, epigenome, transcriptome, and proteome to ensure the stability of the spermatogonia and supporting cells. The identification of signaling pathways linked to infertility has been hampered by the inherent complexity and multifactorial aspects of spermatogenesis. Systems biology is a promising approach to unveil underlying signaling pathways and genes and identify putative biomarkers. In this study, we analyzed thirteen microarray libraries of infertile humans and mice, and different classes of male infertility were compared using differentially expressed genes and functional enrichment analysis. We found regulatory processes, immune response, glutathione transferase and muscle tissue development to be among the most common biological processes in up-regulated genes, and genes involved in spermatogenesis were down-regulated in maturation arrest (MArrest) and oligospermia cases. We also observed the overexpression of genes involved in steroid metabolism in post-meiotic and meiotic arrest. Furthermore, we found that the infertile mouse model most similar to human MArrest was the Dazap1 mutant mouse. The results of this study could help elucidate features of infertility etiology and provide the basis for diagnostic markers.
Collapse
Affiliation(s)
- Seyed Morteza Razavi
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Marjan Sabbaghian
- Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
| | - Mahdi Jalili
- Hematology, Oncology and SCT Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Adeleh Divsalar
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Olaf Wolkenhauer
- Department of Systems Biology and Bioinformatics, University of Rostock, 18051, Rostock, Germany
| | - Ali Salehzadeh-Yazdi
- Department of Systems Biology and Bioinformatics, University of Rostock, 18051, Rostock, Germany.
| |
Collapse
|
8
|
Liu C, Wang H, Shang Y, Liu W, Song Z, Zhao H, Wang L, Jia P, Gao F, Xu Z, Yang L, Gao F, Li W. Autophagy is required for ectoplasmic specialization assembly in sertoli cells. Autophagy 2016; 12:814-32. [PMID: 26986811 DOI: 10.1080/15548627.2016.1159377] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The ectoplasmic specialization (ES) is essential for Sertoli-germ cell communication to support all phases of germ cell development and maturity. Its formation and remodeling requires rapid reorganization of the cytoskeleton. However, the molecular mechanism underlying the regulation of ES assembly is still largely unknown. Here, we show that Sertoli cell-specific disruption of autophagy influenced male mouse fertility due to the resulting disorganized seminiferous tubules and spermatozoa with malformed heads. In autophagy-deficient mouse testes, cytoskeleton structures were disordered and ES assembly was disrupted. The disorganization of the cytoskeleton structures might be caused by the accumulation of a negative cytoskeleton organization regulator, PDLIM1, and these defects could be partially rescued by Pdlim1 knockdown in autophagy-deficient Sertoli cells. Altogether, our works reveal that the degradation of PDLIM1 by autophagy in Sertoli cells is important for the proper assembly of the ES, and these findings define a novel role for autophagy in Sertoli cell-germ cell communication.
Collapse
Affiliation(s)
- Chao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Hongna Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Yongliang Shang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Weixiao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Zhenhua Song
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Haichao Zhao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Lina Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Pengfei Jia
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Fengyi Gao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Zhiliang Xu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Lin Yang
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Fei Gao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Wei Li
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| |
Collapse
|
9
|
Meyer-Ficca ML, Ihara M, Bader JJ, Leu NA, Beneke S, Meyer RG. Spermatid head elongation with normal nuclear shaping requires ADP-ribosyltransferase PARP11 (ARTD11) in mice. Biol Reprod 2015; 92:80. [PMID: 25673562 DOI: 10.1095/biolreprod.114.123661] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Sperm are highly differentiated cells characterized by their species-specific nuclear shapes and extremely condensed chromatin. Abnormal head shapes represent a form of teratozoospermia that can impair fertilization capacity. This study shows that poly(ADP-ribose) polymerase-11 (ARTD11/PARP11), a member of the ADP-ribosyltransferase (ARTD) family, is expressed preferentially in spermatids undergoing nuclear condensation and differentiation. Deletion of the Parp11 gene results in teratozoospermia and male infertility in mice due to the formation of abnormally shaped fertilization-incompetent sperm, despite normal testis weights and sperm counts. At the subcellular level, PARP11-deficient elongating spermatids reveal structural defects in the nuclear envelope and chromatin detachment associated with abnormal nuclear shaping, suggesting functional relevance of PARP11 for nuclear envelope stability and nuclear reorganization during spermiogenesis. In vitro, PARP11 exhibits mono(ADP-ribosyl)ation activity with the ability to ADP-ribosylate itself. In transfected somatic cells, PARP11 colocalizes with nuclear pore components, such as NUP153. Amino acids Y77, Q86, and R95 in the N-terminal WWE domain, as well as presence of the catalytic domain, are essential for colocalization of PARP11 with the nuclear envelope, but catalytic activity of the protein is not required for colocalization with NUP153. This study demonstrates that PARP11 is a novel enzyme important for proper sperm head shaping and identifies it as a potential factor involved in idiopathic mammalian teratozoospermia.
Collapse
Affiliation(s)
- Mirella L Meyer-Ficca
- Department of Animal Dairy and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah Agricultural Experimental Station, Utah State University, Logan, Utah Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Motomasa Ihara
- Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jessica J Bader
- Department of Animal Dairy and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah Agricultural Experimental Station, Utah State University, Logan, Utah Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - N Adrian Leu
- Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sascha Beneke
- Molecular Toxicology Group, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Ralph G Meyer
- Department of Animal Dairy and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah Agricultural Experimental Station, Utah State University, Logan, Utah Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| |
Collapse
|
10
|
Savadi-Shiraz E, Edalatkhah H, Talebi S, Heidari-Vala H, Zandemami M, Pahlavan S, Modarressi MH, Akhondi MM, Paradowska-Dogan A, Sadeghi MR. Quantification of sperm specific mRNA transcripts (PRM1, PRM2
, and TNP2
) in teratozoospermia and normozoospermia: New correlations between mRNA content and morphology of sperm. Mol Reprod Dev 2014; 82:26-35. [DOI: 10.1002/mrd.22440] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 10/30/2014] [Indexed: 01/21/2023]
Affiliation(s)
- Elham Savadi-Shiraz
- Reproductive Biotechnology Research Center; Avicenna Research Institute; ACECR; Tehran Iran
- Department of Urology; Pediatric Urology and Andrology; Section Molecular Andrology; Justus Liebig University; Giessen Germany
| | - Haleh Edalatkhah
- Reproductive Biotechnology Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| | - Saeed Talebi
- Department of Medical Genetics; Faculty of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Hamed Heidari-Vala
- Nanobiotechnology Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| | - Mahdi Zandemami
- Monoclonal Antibody Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| | - Somayeh Pahlavan
- Reproductive Biotechnology Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| | | | - Mohammad Mehdi Akhondi
- Reproductive Biotechnology Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| | - Agnieszka Paradowska-Dogan
- Department of Urology; Pediatric Urology and Andrology; Section Molecular Andrology; Justus Liebig University; Giessen Germany
| | - Mohammad Reza Sadeghi
- Monoclonal Antibody Research Center; Avicenna Research Institute; ACECR; Tehran Iran
| |
Collapse
|
11
|
Agarwal A, Tvrda E, Sharma R. Relationship amongst teratozoospermia, seminal oxidative stress and male infertility. Reprod Biol Endocrinol 2014; 12:45. [PMID: 24884815 PMCID: PMC4049374 DOI: 10.1186/1477-7827-12-45] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 05/18/2014] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Spermatozoa morphology is an important and complex characteristic of the fertilization capacity of male germ cells. Morphological abnormalities have been observed to be accompanied by reactive oxygen species (ROS) overproduction and further damage to spermatozoa, ultimately leading to infertility. Therefore, this study aimed to examine the relationship between seminal ROS production and sperm morphology in infertile teratozoospermic patients as well as in healthy men of proven and unproven fertility. METHODS Semen samples were collected from 79 patients classified as teratozoospermic and 56 healthy donors (control). Standard semen analysis was performed and spermatozoa morphology was assessed according to the WHO 2010 guidelines. Seminal ROS was measured by chemiluminescence assay. Receiver operating characteristic (ROC) curves were generated, and sensitivity, specificity, cutoff value and area under curve (AUC) were determined. RESULTS Sperm morphology was significantly poor in the Teratozoospermic Group compared with the 3 Donor Groups (P < 0.05). Significantly higher levels of ROS (RLU/sec/10⁶ sperm) were seen in the Teratozoospermic group (145.4 (41.5; 555.4) compared to the Donor Groups: All Donors (64.8 (21.1; 198.2), Proven Donors (58.8 (14.2; 79.2) and Proven Donors < 2 years (58.8 (14.2; 79.2) (P < 0.05). ROS correlated negatively with sperm concentration in the All Donor group (r = -0.354; P = 0.021) as well as in the Teratozospermic group (r -0.356; P = 0.002). Using ROC analysis, we established the cutoff values for concentration, morphology and ROS. CONCLUSIONS The incidence of teratozoospermia may be directly related to the overproduction of seminal ROS. Therefore, besides sperm concentration and motility, spermatozoa morphology should receive an equally important consideration in the overall assessment of male fertility.
Collapse
Affiliation(s)
- Ashok Agarwal
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Eva Tvrda
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Rakesh Sharma
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| |
Collapse
|
12
|
Sun Y, Li B, Fan LQ, Zhu WB, Chen XJ, Feng JH, Yang CL, Zhang YH. Does sperm morphology affect the outcome of intrauterine insemination in patients with normal sperm concentration and motility? Andrologia 2012; 44:299-304. [PMID: 22335521 DOI: 10.1111/j.1439-0272.2012.01280.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2011] [Indexed: 12/01/2022] Open
Abstract
The aim of this study was to assess the correlation of sperm morphology with the intrauterine insemination (IUI) outcome in patients with normal sperm concentration and motility. About 412 couples who underwent 908 IUI cycles were involved in the present study. A total of 110 clinical pregnancies were achieved with a pregnancy rate of 12.11% per cycle. The pregnancy rates per cycle were 7.60%, 12.67%, 13.62% and 13.13% in patients with <5%, 5-9%, 10-14% and >14% normal forms, respectively. The lowest pregnancy rate (7.60%) was obtained in the group with normal forms below 5%. However, this rate was not significantly different from other subgroups. Moreover, no pregnancies occurred in women >35 years old with normal sperm forms below 5%, in comparison with that in other subgroups of the same age. For women younger than 35 years old, no significant difference in pregnancy rate was observed in terms of different level of morphologically normal sperm. Our results show that for patients with normal sperm concentration and motility, IUI is recommended for first-line treatment when the woman is younger than 35 years, or morphologically normal sperm is ≥ 5%. IVF/ICSI should be performed when the normal forms are <5% and female age is > 35 years.
Collapse
Affiliation(s)
- Y Sun
- Reproductive Medical Center, The Third Affiliated Hospital of Guangzhou Medical College, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, China
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Fusion failure of dense-cored proacrosomal vesicles in an inducible mouse model of male infertility. Cell Tissue Res 2011; 346:119-34. [PMID: 21987219 DOI: 10.1007/s00441-011-1248-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2011] [Accepted: 09/12/2011] [Indexed: 10/16/2022]
Abstract
The acrosome is a specialized secretory vesicle located in the head of spermatozoa and has an essential role during fertilization. This organelle and the sperm nucleus have aberrant morphologies in forms of male infertility in humans (teratozoospermia), often associated with poor motility (asthenoteratozoospermia). To further our understanding of the aetiology of these conditions, we have performed a pathological investigation of a model of asthenoteratozoospermia that can be induced in mice by N-butyldeoxynojirimycin (NB-DNJ). We have found that, in mice treated with NB-DNJ, instead of an acrosome forming over the round spermatid nucleus, multivesicular bodies (MVB) accumulate in the vicinity of this nucleus. Electron microscopy has revealed that proacrosomic vesicles or granules (PAG) secreted during the Golgi phase of spermiogenesis do not fuse together to form an acrosomic vesicle, but rather attach transiently to the spermatid nucleus. Immunocytochemistry has shown that acrosomal membrane proteins and cytosolic acrosome-associated proteins are redirected to MVB in affected testes, whereas glycoproteins originating in the dense core of the PAG are degraded. Thus, the major effect of NB-DNJ is to inhibit membrane fusion of Golgi-derived secretory vesicles destined for acrosome formation, raising the possibility that these vesicles are critically affected in forms of (astheno)teratozoospermia.
Collapse
|
14
|
Platts AE, Dix DJ, Chemes HE, Thompson KE, Goodrich R, Rockett JC, Rawe VY, Quintana S, Diamond MP, Strader LF, Krawetz SA. Success and failure in human spermatogenesis as revealed by teratozoospermic RNAs. Hum Mol Genet 2007; 16:763-73. [PMID: 17327269 DOI: 10.1093/hmg/ddm012] [Citation(s) in RCA: 203] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We are coming to appreciate that at fertilization human spermatozoa deliver the paternal genome alongside a suite of structures, proteins and RNAs. Although the role of some of the structures and proteins as requisite elements for early human development has been established, the function of the sperm-delivered RNAs remains a point for discussion. The presence of RNAs in transcriptionally quiescent spermatozoa can only be derived from transcription that precedes late spermiogenesis. A cross-platform microarray strategy was used to assess the profile of human spermatozoal transcripts from fertile males who had fathered at least one child compared to teratozoospermic individuals. Unsupervised clustering of the data followed by pathway and ontological analysis revealed the transcriptional perturbation common to the affected individuals. Transcripts encoding components of various cellular remodeling pathways, such as the ubiquitin-proteosome pathway, were severely disrupted. The origin of the perturbation could be traced as far back as the pachytene stage of spermatogenesis. It is anticipated that this diagnostic strategy will prove valuable for understanding male factor infertility.
Collapse
Affiliation(s)
- Adrian E Platts
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Jaroszynski L, Dev A, Li M, Meinhardt A, de Rooij DG, Mueller C, Böhm D, Wolf S, Adham IM, Wulf G, Engel W, Nayernia K. Asthenoteratozoospermia in mice lacking testis expressed gene 18 (Tex18). Mol Hum Reprod 2007; 13:155-63. [PMID: 17208930 DOI: 10.1093/molehr/gal107] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Testis expressed gene 18 (Tex18) is a small gene with one exon of 240 bp, which is specifically expressed in male germ cells. The gene encodes for a protein of 80 amino acids with unknown domain. To investigate the function of (Tex18) gene, we generated mice with targeted disruption of the (Tex18) gene by homologous recombination. Homozygous mutant males on a mixed genetic background (C57BL/6J x 129/Sv) are fertile, while they are subfertile on the 129/Sv background, although mating is normal. We showed that Tex18(-/-) males are subfertile because of abnormal sperm morphology and reduced motility, which is called asthenoteratozoospermia, suggesting that (Tex18) affects sperm characteristics. Maturation of spermatids is unsynchronized and partially impaired in seminiferous tubules of Tex18(-/-) mice. Electron microscopical examination demonstrated abnormal structures of sperm head. In vivo experiments with sperm of Tex18(-/-) 129/Sv mice revealed that the migration of spermatozoa from the uterus into the oviduct is reduced. This result is supported by the observation that sperm motility, as determined by the computer-assisted semen analysis system, is significantly affected, compared to wild-type spermatozoa. Generation of transgenic mice containing Tex18-EGFP fusion construct revealed a high transcriptional activity of (Tex18) during spermiogenesis, a process with morphological changes of haploid germ cells and development to mature spermatozoa. These results indicate that (Tex18) is expressed predominantly during spermatid differentiation and subfertility of the male Tex18(-/-) mice on the 129/Sv background is due to the differentiation arrest, abnormal sperm morphology and reduced sperm motility.
Collapse
Affiliation(s)
- L Jaroszynski
- Institute of Human Genetics, University of Göttingen, Göttingen, Germany
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Jedrzejczak P, Pawelczyk L, Taszarek-Hauke G, Kotwicka M, Warchoł W, Kurpisz M. Predictive value of selected sperm parameters for classical in vitro fertilization procedure of oocyte fertilization. Andrologia 2005; 37:72-82. [PMID: 16026428 DOI: 10.1111/j.1439-0272.2005.00657.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A proportion of fertilized oocytes during classical in vitro fertilization (IVF) procedure was analysed depending on the following factors: number of mature oocytes, seminological criteria such as sperm morphology in raw semen and after its selection in a density gradient (six structural defects of a male gamete were taken into consideration), sperm concentration, motility parameters according to World Health Organization criteria and the functional tests: hypo-osmotic swelling assay and acrosomal reaction induced by calcium ionophore. Evaluation of DNA content in sperm by image cytometry and determination of malonyldialdehydes in seminal plasma were also performed. Seventy-nine semen samples from patients undergoing IVF were assessed. Apart from significant correlations obtained for selected semen parameters and proportion of fertilized eggs, logistic regression analysis showed that the best predictive factors for oocyte fertilization were normal morphology of sperm before and after gradient selection, grade B and C of sperm movement in raw semen, and DNA content after density gradient centrifugation, which all accounted for 76.7% of fertilization predictive value.
Collapse
Affiliation(s)
- P Jedrzejczak
- Infertility and Reproductive Endocrinology, University of Medical Sciences, Poznan, Poland
| | | | | | | | | | | |
Collapse
|
17
|
Yanagimachi R. Intracytoplasmic injection of spermatozoa and spermatogenic cells: its biology and applications in humans and animals. Reprod Biomed Online 2005; 10:247-88. [PMID: 15823233 DOI: 10.1016/s1472-6483(10)60947-9] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Intracytoplasmic sperm injection (ICSI) has become the method of choice to overcome male infertility when all other forms of assisted fertilization have failed. Animals in which ICSI has produced normal offspring include many species. Success rate with normal spermatozoa is well above 50% in the mouse but ICSI success rates in other animals have been low, ranging from 0.3 to 16.5%. Mouse ICSI revealed that spermatozoa that cannot participate in normal fertilization can produce normal offspring by ICSI, provided their nuclei are genomically intact. Human ICSI using infertile spermatozoa has been highly successful perhaps because of the intrinsic instability of human sperm plasma membrane. The health of children born after ICSI and other assisted fertilization techniques is of major concern. Careful analyses suggest that higher incidences of congenital malformations and/or low birth weights after assisted fertilization are largely attributable to parental genetic background and increased incidence of multiple births, rather than to the techniques of assisted fertilization. Since the physiological and nutritional environments of developing embryos may cause persisting alteration in DNA methylation, extreme caution must be exercised in handling gametes and embryos in vitro. In the mouse, round spermatid injection (ROSI) has been routinely successful but its use in humans is controversial. Whether human ROSI and assisted fertilization involving younger spermatogenic cells are medically safe must be the subject of further investigations.
Collapse
Affiliation(s)
- Ryuzo Yanagimachi
- Institute for Biogenesis Research, University of Hawaii Medical School, Honolulu, Hawaii 96822, USA.
| |
Collapse
|
18
|
Correa-Pérez JR, Fernández-Pelegrina R, Zavos PM. Isolation of sequential sperm subpopulations and achievement of morphological normalcy in teratozoospermic specimens processed via a multi-layer/swim-up method. Andrologia 2003; 35:248-9. [PMID: 12950411 DOI: 10.1046/j.1439-0272.2003.00578.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
19
|
Chocat A, Creveuil C, Galeraud-Denis I, Herlicoviez D, Herlicoviez M, Sauvalle A. [Predictive value of non-automated spermatic parameters and automated kinetic parameters on cleavage rate in fertilization in vitro]. GYNECOLOGIE, OBSTETRIQUE & FERTILITE 2001; 29:301-7. [PMID: 11338135 DOI: 10.1016/s1297-9589(01)00129-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The aim of this work was to determine retrospectively in 114 couples the predictive value of semen analysis for the in vitro fertilization (IVF) outcome when sperm evaluation before IVF was assessed by either conventional parameters or a Hamilton-Thorne automated motility analyser. A backward logistic regression analysis was used to study the relative contribution of each conventional or computerized parameter. Computerized sperm values were the worst index for predicting oocyte fertilization. However a tight relationship between morphology and cleavage ratio was observed. Using ROC analysis, under a 18% threshold, cleavage failure was noted in 71% of couples undergoing an IVF program. This study indicates that morphology is the best parameter for predicting cleavage failure.
Collapse
Affiliation(s)
- A Chocat
- CECOS-spermiologie, département génétique et reproduction (Pr. P. Leymarie), GHU Côte de Nacre, 14033 Caen, France
| | | | | | | | | | | |
Collapse
|