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Zhang YT, Shen G, Zhuo LC, Yang X, Wang SY, Ruan TC, Jiang C, Wang X, Wang Y, Yang YH, Shen Y. Novel variations in TENT5D lead to teratozoospermia in infertile patients. Andrology 2024; 12:1336-1346. [PMID: 38228861 DOI: 10.1111/andr.13589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/18/2024]
Abstract
PURPOSE Teratozoospermia is the main pathogenic factor of male infertility. However, the genetic etiology of teratozoospermia is largely unknown. This study aims to clarify the relationship between novel variations in TENT5D and teratozoospermia in infertile patients. MATERIALS AND METHODS Two infertile patients were enrolled. Routine semen analysis of patients and normal controls was conducted with the WHO guidelines. Whole-exome sequencing (WES) was conducted to identify pathogenic variants in the two patients. Morphology and ultrastructure analysis of spermatozoa in the two patients was determined by Papanicolaou staining, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The functional effect of the identified variants was analyzed by immunofluorescence staining and western blotting. The expression of TENT5D in different germ cells was detected by immunofluorescence staining. RESULTS Two new hemizygous variations, c.101C > T (p.P34L) and c.125A > T (p.D42V), in TENT5D were detected in two patients with male infertility. Morphology analysis showed abnormalities in spermatozoa morphology in the two patients, including multiple heads, headless, multiple tails, coiled, and/or bent flagella. Ultrastructure analysis showed that most of the spermatozoa exhibited missing or irregularly arranged '9+2' structures. Further functional experiments confirmed the abrogated TENT5D protein expression in patients. In addition, both p.P34L and p.D42V substitutions resulted in a conformational change of the TENT5D protein. We precisely analyzed the subcellular localization of TENT5D in germ cells in humans and mice. And we found that TENT5D was predominantly detected in the head and flagellum of elongating spermatids and epididymal spermatozoa. CONCLUSIONS Our results showed further evidence of a relationship between TENT5D mutation and human male infertility, providing new genetic insight for use in the diagnosis and treatment of male infertility.
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Affiliation(s)
- Ying-Teng Zhang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Gan Shen
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Liang-Chai Zhuo
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xue Yang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Su-Yan Wang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Tie-Chao Ruan
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Chuan Jiang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xiang Wang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yan Wang
- Reproduction Medical Center of West China Second University Hospital, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Yi-Hong Yang
- Reproduction Medical Center of West China Second University Hospital, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Ying Shen
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
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Abstract
In recent years, the incidence of teratospermia has been increasing, and it has become a very important factor leading to male infertility. The research on the molecular mechanism of teratospermia is also progressing rapidly. This article briefly summarizes the clinical incidence of teratozoospermia, and makes a retrospective summary of related studies reported in recent years. Specifically discussing the relationship between gene status and spermatozoa, the review aims to provide the basis for the genetic diagnosis and gene therapy of teratozoospermia.
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Crafa A, Condorelli RA, La Vignera S, Calogero AE, Cannarella R. Globozoospermia: A Case Report and Systematic Review of Literature. World J Mens Health 2023; 41:49-80. [PMID: 36047070 PMCID: PMC9826911 DOI: 10.5534/wjmh.220020] [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] [Received: 02/06/2022] [Revised: 03/28/2022] [Accepted: 04/12/2022] [Indexed: 01/21/2023] Open
Abstract
PURPOSE Globozoospermia is a genetic syndrome characterized by the presence of round-headed spermatozoa and infertility due to the inability of these spermatozoa to fertilize the oocyte. In this article, we present the clinical case of a young globozoospermic patient with a new, not yet described mutation of the DPY19L2 gene. We also performed a systematic review of the literature on gene mutations, the outcome of assisted reproductive techniques, and the risk of transmission of abnormalities to the offspring in patients with globozoospermia and made recommendations to offer a more appropriate clinical management of these patients. MATERIALS AND METHODS We performed a systematic search in the PubMed, Google Scholar, and Scopus databases from their inception to December 2021. The search strategy included the combination of the following Medical Subjects Headings (MeSH) terms and keywords: "globozoospermia", "round-headed spermatozoa", "round head spermatozoa", "intracytoplasmic sperm injection", "ICSI", "offspring", "child health", "assisted reproductive technique outcome". All the eligible studies were selected following the PECOS (Population, Exposure, Comparison/Comparator, Outcomes, Study design) model. The quality of included studies was assessed by applying the "Cambridge Quality Checklists". RESULTS The main genes involved in the pathogenesis of globozoospermia are DPY19L2, SPATA16, PICK1, GGN, SPACA1, ZPBP, CCDC62, and CCNB3 genes. Other genes could also play a role. These include C2CD6, C7orf61, CCIN, DNH17, DNH6, PIWIL4, and CHPT1. Globozoospermic patients should undergo ART to achieve fertility. In particular, intracytoplasmic sperm injection with assisted oocyte activation or intracytoplasmic morphologically-selected sperm injection appears to be associated with a higher success rate. Patients with globozoospermia should also be evaluated for the high rate of sperm aneuploidy which appears to influence the success rate of ART but does not appear to be associated with an increased risk of transmission of genetic abnormalities to offspring. CONCLUSIONS This systematic review summarizes the evidence on the gene panel to be evaluated, ICSI outcomes, and the health of the offspring in patients with globozoospermia. Evidence-based recommendations on the management of patients with globozoospermia are provided.
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Affiliation(s)
- Andrea Crafa
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | | | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Aldo Eugenio Calogero
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
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Fesahat F, Henkel R, Agarwal A. Globozoospermia syndrome: An update. Andrologia 2019; 52:e13459. [PMID: 31724759 DOI: 10.1111/and.13459] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/17/2019] [Accepted: 09/21/2019] [Indexed: 12/15/2022] Open
Abstract
Among the factors involved in male infertility, there is a rare morphology disorder called "globozoospermia" that is classified into total globozoospermia and partial globozoospermia (type I and type II, respectively). This syndrome is primarily characterised by the presence of round-headed spermatozoa with cytoskeleton defects around the nucleus and no acrosome. Current data support the negative correlation between globozoospermia and conventional intracytoplasmic sperm injection (ICSI) outcomes, revealing the need for the management of patients undergoing assisted reproduction technology (ART) through more effective treatment techniques. This review highlights the most important characteristics of globozoospermia such as sperm parameters, DNA/chromatin integrity and sperm DNA fragmentation (SDF), as well as genetic features based on the latest knowledge. Additionally, we looked into current progress on fertilisation potential and possible treatment strategies for patients presenting with globozoospermia.
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Affiliation(s)
- Farzaneh Fesahat
- Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa.,American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
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ElInati E, Fossard C, Okutman O, Ghédir H, Ibala-Romdhane S, Ray PF, Saad A, Hennebicq S, Viville S. A new mutation identified in SPATA16 in two globozoospermic patients. J Assist Reprod Genet 2016; 33:815-20. [PMID: 27086357 DOI: 10.1007/s10815-016-0715-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 04/01/2016] [Indexed: 10/21/2022] Open
Abstract
PURPOSE The aim of this study is to identify potential genes involved in human globozoopsermia. METHODS Nineteen globozoospermic patients (previously screened for DPY19L2 mutations with no causative mutation) were recruited in this study and screened for mutations in genes implicated in human globozoospermia SPATA16 and PICK1. Using the candidate gene approach and the determination of Spata16 partners by Glutathione S-transferase (GST) pull-down four genes were also selected and screened for mutations. RESULTS We identified a novel mutation of SPATA16: deletion of 22.6 Kb encompassing the first coding exon in two unrelated Tunisian patients who presented the same deletion breakpoints. The two patients shared the same haplotype, suggesting a possible ancestral founder effect for this new deletion. Four genes were selected using the candidate gene approach and the GST pull-down (GOPC, PICK1, AGFG1 and IRGC) and were screened for mutation, but no variation was identified. CONCLUSIONS The present study confirms the pathogenicity of the SPATA16 mutations. The fact that no variation was detected in the coding sequence of AFGF1, GOPC, PICK1 and IRGC does not mean that they are not involved in human globozoospermia. A larger globozoospermic cohort must be studied in order to accelerate the process of identifying new genes involved in such phenotypes. Until sufficient numbers of patients have been screened, AFGF1, GOPC, PICK1 and IRGC should still be considered as candidate genes.
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Affiliation(s)
- Elias ElInati
- Département Génomique Fonctionnelle et Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM) U964/Centre National de Recherche Scientifique (CNRS) UMR 7104/Université de Strasbourg, 67404, Illkirch, France. .,The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway NW7 1AA, London, UK.
| | - Camille Fossard
- Département Génomique Fonctionnelle et Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM) U964/Centre National de Recherche Scientifique (CNRS) UMR 7104/Université de Strasbourg, 67404, Illkirch, France
| | - Ozlem Okutman
- Département Génomique Fonctionnelle et Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM) U964/Centre National de Recherche Scientifique (CNRS) UMR 7104/Université de Strasbourg, 67404, Illkirch, France.,Centre Hospitalier Universitaire de Strasbourg, 67000, Strasbourg, France
| | - Houda Ghédir
- Laboratoire de Cytogénétique, Génétique Moléculaire et Biologie de la Reproduction Humaines. CHU Farhat Hached, 4000, Sousse, Tunisie
| | - Samira Ibala-Romdhane
- Laboratoire de Cytogénétique, Génétique Moléculaire et Biologie de la Reproduction Humaines. CHU Farhat Hached, 4000, Sousse, Tunisie
| | - Pierre F Ray
- Université Grenoble Alpes, Grenoble, F-38000, France.,Equipe "Génétique, Epigénétique et thérapies de l'Infertilité" Institut Albert Bonniot, INSERM U823, Grenoble, F-38000, France.,CHU de Grenoble, UF de Biochimie et Génétique Moléculaire, Grenoble, F-38000, France.,Fédération Française des CECOS, France, Paris.,Faculté de Médecine de Grenoble, Laboratoire d'Aide à la Procréation-CECOS, Laboratoire AGe, Imagerie, Modélisation, Équipe Génétique-Infertilité-Thérapeutique, Grenoble, France
| | - Ali Saad
- Laboratoire de Cytogénétique, Génétique Moléculaire et Biologie de la Reproduction Humaines. CHU Farhat Hached, 4000, Sousse, Tunisie
| | - Sylvianne Hennebicq
- Université Grenoble Alpes, Grenoble, F-38000, France.,Equipe "Génétique, Epigénétique et thérapies de l'Infertilité" Institut Albert Bonniot, INSERM U823, Grenoble, F-38000, France.,CHU de Grenoble, UF de Biochimie et Génétique Moléculaire, Grenoble, F-38000, France.,Fédération Française des CECOS, France, Paris.,Faculté de Médecine de Grenoble, Laboratoire d'Aide à la Procréation-CECOS, Laboratoire AGe, Imagerie, Modélisation, Équipe Génétique-Infertilité-Thérapeutique, Grenoble, France
| | - Stéphane Viville
- Département Génomique Fonctionnelle et Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM) U964/Centre National de Recherche Scientifique (CNRS) UMR 7104/Université de Strasbourg, 67404, Illkirch, France.,Centre Hospitalier Universitaire de Strasbourg, 67000, Strasbourg, France
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Wang XX, Sun BF, Jiao J, Chong ZC, Chen YS, Wang XL, Zhao Y, Zhou YM, Li D. Genome-wide 5-hydroxymethylcytosine modification pattern is a novel epigenetic feature of globozoospermia. Oncotarget 2016; 6:6535-43. [PMID: 25762640 PMCID: PMC4466632 DOI: 10.18632/oncotarget.3163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 01/17/2015] [Indexed: 11/25/2022] Open
Abstract
Discovery of 5-hydroxymethylcytosine (5hmC) in mammalian genomes has excited the field of epigenetics, but information on the genome-wide distribution of 5hmC is limited. Globozoospermia is a rare but severe cause of male infertility. To date, the epigenetic mechanism, especially 5hmC profiles involved in globozoospermia progression, remains largely unknown. Here, utilizing the chemical labeling and biotin-enrichment approach followed by Illumina HiSeq sequencing, we showed that (i) 6664, 9029 and 6318 genes contain 5hmC in normal, abnormal, and globozoospermia sperm, respectively; (ii) some 5hmC-containing genes significantly involves in spermatogenesis, sperm motility and morphology, and gamete generation; (iii) 5hmC is exclusively localized in sperm intron; (iv) approximately 40% imprinted genes have 5hmC modification in sperm genomes, but globozoospermia sperm exhibiting a large portion of imprinted genes lose the 5hmC modification; (v) six imprinted genes showed different 5hmC patterns in abnormal sperm (GDAP1L1, GNAS, KCNK9, LIN28B, RB1, RTL1), and five imprinted genes showed different 5hmC patterns in globozoospermia sperm (KCNK9, LIN28B, RB1, SLC22A18, ZDBF2). These results suggested that differences in genome-wide 5hmC patterns may in part be responsible for the sperm phenotype. All of this may improve our understanding of the basic molecular mechanism underlying sperm biology and the etiology of male infertility.
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Affiliation(s)
- Xiu-Xia Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Bao-Fa Sun
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China
| | - Jiao Jiao
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ze-Chen Chong
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China
| | - Yu-Shen Chen
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China
| | - Xiao-Li Wang
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China
| | - Yue Zhao
- Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang 110001, China
| | - Yi-Ming Zhou
- Department of Medicine, Brigham and Women's Hospital, Harvard Institutes of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Da Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Chansel-Debordeaux L, Dandieu S, Bechoua S, Jimenez C. Reproductive outcome in globozoospermic men: update and prospects. Andrology 2015; 3:1022-34. [DOI: 10.1111/andr.12081] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/24/2015] [Accepted: 06/26/2015] [Indexed: 01/24/2023]
Affiliation(s)
- L. Chansel-Debordeaux
- Service de Biologie de la Reproduction-CECOS; CHU de Bordeaux; Centre Aliénor d'Aquitaine; Bordeaux France
| | | | - S. Bechoua
- Service de Biologie de la Reproduction-CECOS; CHU de Dijon; Maternité du Bocage; Dijon France
| | - C. Jimenez
- Service de Biologie de la Reproduction-CECOS; CHU de Bordeaux; Centre Aliénor d'Aquitaine; Bordeaux France
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Alvarenga TA, Hirotsu C, Mazaro-Costa R, Tufik S, Andersen ML. Impairment of male reproductive function after sleep deprivation. Fertil Steril 2015; 103:1355-62.e1. [DOI: 10.1016/j.fertnstert.2015.02.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 01/16/2015] [Accepted: 02/04/2015] [Indexed: 11/17/2022]
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Coutton C, Escoffier J, Martinez G, Arnoult C, Ray PF. Teratozoospermia: spotlight on the main genetic actors in the human. Hum Reprod Update 2015; 21:455-85. [PMID: 25888788 DOI: 10.1093/humupd/dmv020] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 03/25/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Male infertility affects >20 million men worldwide and represents a major health concern. Although multifactorial, male infertility has a strong genetic basis which has so far not been extensively studied. Recent studies of consanguineous families and of small cohorts of phenotypically homogeneous patients have however allowed the identification of a number of autosomal recessive causes of teratozoospermia. Homozygous mutations of aurora kinase C (AURKC) were first described to be responsible for most cases of macrozoospermia. Other genes defects have later been identified in spermatogenesis associated 16 (SPATA16) and dpy-19-like 2 (DPY19L2) in patients with globozoospermia and more recently in dynein, axonemal, heavy chain 1 (DNAH1) in a heterogeneous group of patients presenting with flagellar abnormalities previously described as dysplasia of the fibrous sheath or short/stump tail syndromes, which we propose to call multiple morphological abnormalities of the flagella (MMAF). METHODS A comprehensive review of the scientific literature available in PubMed/Medline was conducted for studies on human genetics, experimental models and physiopathology related to teratozoospermia in particular globozoospermia, large headed spermatozoa and flagellar abnormalities. The search included all articles with an English abstract available online before September 2014. RESULTS Molecular studies of numerous unrelated patients with globozoospermia and large-headed spermatozoa confirmed that mutations in DPY19L2 and AURKC are mainly responsible for their respective pathological phenotype. In globozoospermia, the deletion of the totality of the DPY19L2 gene represents ∼ 81% of the pathological alleles but point mutations affecting the protein function have also been described. In macrozoospermia only two recurrent mutations were identified in AURKC, accounting for almost all the pathological alleles, raising the possibility of a putative positive selection of heterozygous individuals. The recent identification of DNAH1 mutations in a proportion of patients with MMAF is promising but emphasizes that this phenotype is genetically heterogeneous. Moreover, the identification of mutations in a dynein strengthens the emerging point of view that MMAF may be a phenotypic variation of the classical forms of primary ciliary dyskinesia. Based on data from human and animal models, the MMAF phenotype seems to be favored by defects directly or indirectly affecting the central pair of axonemal microtubules of the sperm flagella. CONCLUSIONS The studies described here provide valuable information regarding the genetic and molecular defects causing infertility, to improve our understanding of the physiopathology of teratozoospermia while giving a detailed characterization of specific features of spermatogenesis. Furthermore, these findings have a significant influence on the diagnostic strategy for teratozoospermic patients allowing the clinician to provide the patient with informed genetic counseling, to adopt the best course of treatment and to develop personalized medicine directly targeting the defective gene products.
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Affiliation(s)
- Charles Coutton
- Université Grenoble Alpes, Grenoble, F-38000, France Equipe 'Genetics Epigenetics and Therapies of Infertility' Institut Albert Bonniot, INSERM U823, La Tronche, F-38706, France CHU de Grenoble, UF de Génétique Chromosomique, Grenoble, F-38000, France
| | - Jessica Escoffier
- Université Grenoble Alpes, Grenoble, F-38000, France Equipe 'Genetics Epigenetics and Therapies of Infertility' Institut Albert Bonniot, INSERM U823, La Tronche, F-38706, France Departments of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Guillaume Martinez
- Université Grenoble Alpes, Grenoble, F-38000, France Equipe 'Genetics Epigenetics and Therapies of Infertility' Institut Albert Bonniot, INSERM U823, La Tronche, F-38706, France
| | - Christophe Arnoult
- Université Grenoble Alpes, Grenoble, F-38000, France Equipe 'Genetics Epigenetics and Therapies of Infertility' Institut Albert Bonniot, INSERM U823, La Tronche, F-38706, France
| | - Pierre F Ray
- Université Grenoble Alpes, Grenoble, F-38000, France Equipe 'Genetics Epigenetics and Therapies of Infertility' Institut Albert Bonniot, INSERM U823, La Tronche, F-38706, France CHU de Grenoble, UF de Biochimie et Génétique Moléculaire, Grenoble, F-38000, France
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10
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Chianese C, Fino MG, Riera Escamilla A, López Rodrigo O, Vinci S, Guarducci E, Daguin F, Muratori M, Tamburrino L, Lo Giacco D, Ars E, Bassas L, Costa M, Pisatauro V, Noci I, Coccia E, Provenzano A, Ruiz-Castañé E, Giglio S, Piomboni P, Krausz C. Comprehensive investigation in patients affected by sperm macrocephaly and globozoospermia. Andrology 2015; 3:203-12. [DOI: 10.1111/andr.12016] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 01/04/2015] [Accepted: 01/14/2015] [Indexed: 11/28/2022]
Affiliation(s)
- C. Chianese
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - M. G. Fino
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - A. Riera Escamilla
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - O. López Rodrigo
- Laboratory of Seminology and Embryology & andrology Service; Fundació Puigvert; Institut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau); Universitat Autònoma de Barcelona; Barcelona Spain
| | - S. Vinci
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - E. Guarducci
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - F. Daguin
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - M. Muratori
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - L. Tamburrino
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - D. Lo Giacco
- Molecular Biology Laboratory; Fundació Puigvert; Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau); Universitat Autònoma de Barcelona; Barcelona Spain
| | - E. Ars
- Molecular Biology Laboratory; Fundació Puigvert; Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau); Universitat Autònoma de Barcelona; Barcelona Spain
| | - L. Bassas
- Laboratory of Seminology and Embryology & andrology Service; Fundació Puigvert; Institut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau); Universitat Autònoma de Barcelona; Barcelona Spain
| | - M. Costa
- Department of Reproductive Medicine; Evangelic International Hospital; Genoa Italy
| | - V. Pisatauro
- Department of Reproductive Medicine; Evangelic International Hospital; Genoa Italy
| | - I. Noci
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - E. Coccia
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - A. Provenzano
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - E. Ruiz-Castañé
- andrology Service; Fundació Puigvert; Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau); Barcelona Spain
| | - S. Giglio
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
| | - P. Piomboni
- Department of Molecular and Developmental Medicine; University of Siena; Siena Italy
| | - C. Krausz
- Sexual Medicine and andrology Unit; Department of Experimental and Clinical Biomedical Sciences ‘Mario Serio’; University of Florence and Centre of Excellence DeNothe; Florence Italy
- andrology Service; Fundació Puigvert; Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau); Barcelona Spain
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11
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Zhu F, Gong F, Lin G, Lu G. DPY19L2 gene mutations are a major cause of globozoospermia: identification of three novel point mutations. Mol Hum Reprod 2013; 19:395-404. [DOI: 10.1093/molehr/gat018] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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12
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Autosomal mutations and human spermatogenic failure. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1873-9. [DOI: 10.1016/j.bbadis.2012.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 07/18/2012] [Accepted: 07/19/2012] [Indexed: 01/08/2023]
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13
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Perrin A, Coat C, Nguyen MH, Talagas M, Morel F, Amice J, De Braekeleer M. Molecular cytogenetic and genetic aspects of globozoospermia: a review. Andrologia 2012; 45:1-9. [DOI: 10.1111/j.1439-0272.2012.01308.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2012] [Indexed: 11/28/2022] Open
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14
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Alvarez Sedo C, Rawe VY, Chemes HE. Acrosomal biogenesis in human globozoospermia: immunocytochemical, ultrastructural and proteomic studies. Hum Reprod 2012; 27:1912-21. [DOI: 10.1093/humrep/des126] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Ferfouri F, Merdassi G, Vialard F. Avons-nous percé le mystère de la globozoospermie ? Basic Clin Androl 2011. [DOI: 10.1007/s12610-011-0149-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Résumé
Si la première description de la globozoocéphalie date de 1971, il aura fallu plus de 35 ans pour identifier la première cause génétique (une altération du gène SPATA16), et cela malgré la création de nombreux modèles murins et la certitude d’une cause purement génétique à ce syndrome par l’observation de fratrie de patients atteints. Malgré l’identification récente de nouveaux gènes comme PICK1 et DPY19L2, la globozoocéphalie reste toujours un mystère. En effet, ce syndrome est probablement très polymorphe, comme le suggèrent les observations en microscopie électronique, et il est associé à un très mauvais taux de succès en assistance médicale à la procréation (AMP). Les prochaines études devront donc s’attacher à comprendre les mécanismes à l’origine de cette globozoocéphalie et à identifier des traitements pouvant contourner les déficits spermatiques majeurs associés à ce syndrome.
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16
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Toshimori K. Dynamics of the mammalian sperm membrane modification leading to fertilization: a cytological study. Microscopy (Oxf) 2011; 60 Suppl 1:S31-S42. [PMID: 21844599 DOI: 10.1093/jmicro/dfr036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Fertilization occurs when the sperm penetrates the egg, resulting in the combination of paternal and maternal genomes for the propagation of generations. To perform the task, the mammalian sperm membrane system, constructed during spermatogenesis, undergoes biochemical and cytological modifications. In this review, the following three points are discussed: (i) the nature of the acrosomal membrane disclosed by various types of microscopy, including transmission electron microscopy and the recently developed high-resolution fluorescence microscopy, (ii) the nascent acrosomal membrane dysfunction during acrosome biogenesis and (iii) the modification of the sperm membrane during sperm-egg interaction.
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Affiliation(s)
- Kiyotaka Toshimori
- Department of Anatomy and Developmental Biology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chiba 260-8670, Japan.
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17
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Bechoua S, Chiron A, Delcleve-Paulhac S, Sagot P, Jimenez C. Fertilisation and pregnancy outcome after ICSI in globozoospermic patients without assisted oocyte activation. Andrologia 2009; 41:55-8. [PMID: 19143732 DOI: 10.1111/j.1439-0272.2008.00884.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The successful outcome of intracytoplasmic sperm injection (ICSI) with globozoospermic sperm and non-activated oocytes is reported. Three couples underwent ICSI treatment and two of the patients were siblings. Forty-four non-activated oocytes were injected, 26 oocytes fertilised normally and 17 good quality embryos were obtained. Six embryo transfers were carried out, three with fresh embryos and three with frozen-thawed embryos. Three pregnancies resulted from the fresh embryo transfers and additionally two pregnancies were obtained after the transfer of frozen-thawed embryos. Two healthy babies were born. One twin pregnancy is ongoing. Our case reports demonstrate that in some ICSI attempts undertaken with globozoospermic sperm cells from two of our patients, high fertilisation rates, pregnancies and live births can be achieved, without artificially activated oocytes. Our data also suggest that in some cases, round-headed spermatozoa lack the capacity to activate the oocyte. Therefore, it cannot be excluded that artificial oocyte activation could be of help in globozoospermic patients with complete fertilisation failure.
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Affiliation(s)
- S Bechoua
- Service de Biologie de la Reproduction, CECOS, CHU de Dijon, Maternité du Bocage, Dijon, France.
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18
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Abstract
Evolving therapies have allowed the use of sperm from men with spermatogenic compromise, obstructive azoospermia, and sperm functional deficiency, enabling these men to procreate when unable to do so naturally. The genetic basis of only a portion of these conditions is known and research must be pursued into the genetic underpinnings of those that have not yet been delineated. Education and provision of information to patients is the responsibility of all involved in the care of men with reproductive failure. The author concentrates on some of the known causes of nonobstructive azoospermia and obstructive azoospermia with a well-established genetic cause such as congenital bilateral absence of the vas deferens.
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Affiliation(s)
- Robert D Oates
- Department of Urology, Boston University School of Medicine, 720 Harrison Avenue, Suite 606, Boston, MA 02118, USA.
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19
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20
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Dam AHDM, Koscinski I, Kremer JAM, Moutou C, Jaeger AS, Oudakker AR, Tournaye H, Charlet N, Lagier-Tourenne C, van Bokhoven H, Viville S. Homozygous mutation in SPATA16 is associated with male infertility in human globozoospermia. Am J Hum Genet 2007; 81:813-20. [PMID: 17847006 PMCID: PMC2227931 DOI: 10.1086/521314] [Citation(s) in RCA: 209] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Accepted: 05/23/2007] [Indexed: 01/29/2023] Open
Abstract
Globozoospermia is a rare (incidence <0.1% in male infertile patients) form of teratozoospermia, mainly characterized by round-headed spermatozoa that lack an acrosome. It originates from a disturbed spermiogenesis, which is expected to be induced by a genetic factor. Several family cases and recessive mouse models with the same phenotype support this expectation. In this study, we present a consanguineous family with three affected brothers, in whom we have identified a homozygous mutation in the spermatogenesis-specific gene SPATA16. This is the first example of a nonsyndromic male infertility condition in humans caused by an autosomal gene defect, and it could also mean that the identification of other partners like SPATA16 could elucidate acrosome formation.
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Affiliation(s)
- Anika H D M Dam
- Centre for Reproduction, Department of Obstetrics and Gynecology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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21
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Schmiady H, Pfüller B, Bloechle M, Eckel H. Fertilisation failure after intracytoplasmic sperm injection is not associated with sperm aneuploidy of a globozoospermic patient. Andrologia 2007; 39:38-42. [PMID: 17212809 DOI: 10.1111/j.1439-0272.2006.00750.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The objective of this study was to determine the aneuploidy rate in spermatozoa from a globozoospermic patient who underwent three unsuccessful intracytoplasmic sperm injection (ICSI) treatment cycles together with his wife. The aneuploidy rates of chromosomes 13, 18, 21, X and Y as well as the diploidy rate in the spermatozoa of this man were evaluated by fluorescence in situ hybridisation to clarify if chromosomal aneuploidy could be a cause for the low fertilisation rate observed in this case. In the spermatozoa of our patient no increase in aneuploidy rates was found for the tested chromosomes (0.0% disomies of chromosomes 13, 18 and 21 with a diploidy rate of 0.6%; X/Y missegregation: 0.6%) indicating that the ICSI outcome of the couple was not impaired by sperm aneuploidy of the globozoospermic man.
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Affiliation(s)
- H Schmiady
- Charité, CCM, Klinik für Gynäkologie mit Hochschulambulanz, Reproduktionsmedizin, Berlin, Germany.
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22
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Georgiou I, Syrrou M, Pardalidis N, Karakitsios K, Mantzavinos T, Giotitsas N, Loutradis D, Dimitriadis F, Saito M, Miyagawa I, Tzoumis P, Sylakos A, Kanakas N, Moustakareas T, Baltogiannis D, Touloupides S, Giannakis D, Fatouros M, Sofikitis N. Genetic and epigenetic risks of intracytoplasmic sperm injection method. Asian J Androl 2007; 8:643-73. [PMID: 17111067 DOI: 10.1111/j.1745-7262.2006.00231.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Pregnancies achieved by assisted reproduction technologies, particularly by intracytoplasmic sperm injection (ICSI) procedures, are susceptible to genetic risks inherent to the male population treated with ICSI and additional risks inherent to this innovative procedure. The documented, as well as the theoretical, risks are discussed in the present review study. These risks mainly represent that consequences of the genetic abnormalities underlying male subfertility (or infertility) and might become stimulators for the development of novel approaches and applications in the treatment of infertility. In addition, risks with a polygenic background appearing at birth as congenital anomalies and other theoretical or stochastic risks are discussed. Recent data suggest that assisted reproductive technology might also affect epigenetic characteristics of the male gamete, the female gamete, or might have an impact on early embryogenesis. It might be also associated with an increased risk for genomic imprinting abnormalities.
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Affiliation(s)
- Ioannis Georgiou
- Laboratory of Molecular Urology and Genetics of Human Reproduction, Department of Urology, Ioannina University School of Medicine, Ioannina 45110, Greece
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23
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Yildiz Y, Matern H, Thompson B, Allegood JC, Warren RL, Ramirez DM, Hammer RE, Hamra FK, Matern S, Russell DW. Mutation of beta-glucosidase 2 causes glycolipid storage disease and impaired male fertility. J Clin Invest 2006; 116:2985-94. [PMID: 17080196 PMCID: PMC1626112 DOI: 10.1172/jci29224] [Citation(s) in RCA: 184] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2006] [Accepted: 07/25/2006] [Indexed: 01/24/2023] Open
Abstract
beta-Glucosidase 2 (GBA2) is a resident enzyme of the endoplasmic reticulum thought to play a role in the metabolism of bile acid-glucose conjugates. To gain insight into the biological function of this enzyme and its substrates, we generated mice deficient in GBA2 and found that these animals had normal bile acid metabolism. Knockout males exhibited impaired fertility. Microscopic examination of sperm revealed large round heads (globozoospermia), abnormal acrosomes, and defective mobility. Glycolipids, identified as glucosylceramides by mass spectrometry, accumulated in the testes, brains, and livers of the knockout mice but did not cause obvious neurological symptoms, organomegaly, or a reduction in lifespan. Recombinant GBA2 hydrolyzed glucosylceramide to glucose and ceramide; the same reaction catalyzed by the beta-glucosidase acid 1 (GBA1) defective in subjects with the Gaucher's form of lysosomal storage disease. We conclude that GBA2 is a glucosylceramidase whose loss causes accumulation of glycolipids and an endoplasmic reticulum storage disease.
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Affiliation(s)
- Yildiz Yildiz
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Heidrun Matern
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Bonne Thompson
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jeremy C. Allegood
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Rebekkah L. Warren
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Denise M.O. Ramirez
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Robert E. Hammer
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - F. Kent Hamra
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Siegfried Matern
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - David W. Russell
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Department of Internal Medicine III, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.
School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA.
Department of Biochemistry and
Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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24
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Dam AHDM, Feenstra I, Westphal JR, Ramos L, van Golde RJT, Kremer JAM. Globozoospermia revisited. Hum Reprod Update 2006; 13:63-75. [PMID: 17008355 DOI: 10.1093/humupd/dml047] [Citation(s) in RCA: 184] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Globozoospermia is a rare (incidence <0.1%) but severe disorder in male infertility. Total globozoospermia is diagnosed by the presence of 100% round-headed spermatozoa lacking an acrosome. It is still unclear whether patients whose ejaculate contains both normal and globozoospermic cells (partial globozoospermia) suffer from a variation of the same syndrome. Apart from the fact that affected males suffer from reduced fertility or even infertility, no other physical characteristics can be associated with the syndrome. ICSI is a treatment option for these patients, although low fertilization rates after ICSI show a reduced ability to activate the oocyte. In globozoospermic cells, the use of acrosome markers has demonstrated an absent or severely malformed acrosome. Chromatin compaction appears to be disturbed but is not consistently over- or undercondensed. In some cases, an increased number of cells with DNA fragmentation have been observed. The analysis of the cytogenetic composition revealed an increased aneuploidy rate in some cases. Nonetheless, no increased number of spontaneous abortions or congenital defects has been reported in pregnancies conceived after ICSI. The pathogenesis of globozoospermia most probably originates in spermiogenesis, more specifically in acrosome formation and sperm head elongation. In several knockout mouse models, a phenotype similar to that in humans was found. Together with the occurrence of affected siblings, these findings indicate a genetic origin, which makes globozoospermia a good candidate for genetic analysis. More research is needed to elucidate the pathogenesis of human globozoospermia to further understand globozoospermia as well as (abnormalities in) spermiogenesis and spermatogenesis in general.
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Affiliation(s)
- A H D M Dam
- Department of Obstetrics and Gynaecology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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25
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Bibliography. Current world literature. Minimally invasive gynecologic procedures. Curr Opin Obstet Gynecol 2006; 18:464-7. [PMID: 16794430 DOI: 10.1097/01.gco.0000233944.74672.e0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Bibliography. Current world literature. Fertility. Curr Opin Obstet Gynecol 2006; 18:344-53. [PMID: 16735837 DOI: 10.1097/01.gco.0000193023.28556.e2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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