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Eisenberg ML, Esteves SC, Lamb DJ, Hotaling JM, Giwercman A, Hwang K, Cheng YS. Male infertility. Nat Rev Dis Primers 2023; 9:49. [PMID: 37709866 DOI: 10.1038/s41572-023-00459-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/09/2023] [Indexed: 09/16/2023]
Abstract
Clinical infertility is the inability of a couple to conceive after 12 months of trying. Male factors are estimated to contribute to 30-50% of cases of infertility. Infertility or reduced fertility can result from testicular dysfunction, endocrinopathies, lifestyle factors (such as tobacco and obesity), congenital anatomical factors, gonadotoxic exposures and ageing, among others. The evaluation of male infertility includes detailed history taking, focused physical examination and selective laboratory testing, including semen analysis. Treatments include lifestyle optimization, empirical or targeted medical therapy as well as surgical therapies that lead to measurable improvement in fertility. Although male infertility is recognized as a disease with effects on quality of life for both members of the infertile couple, fewer data exist on specific quantification and impact compared with other health-related conditions.
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Affiliation(s)
- Michael L Eisenberg
- Department of Urology, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Obstetrics & Gynecology, Stanford University School of Medicine, Stanford, CA, USA.
| | - Sandro C Esteves
- ANDROFERT Andrology and Human Reproduction Clinic, Campinas, Brazil
- Division of Urology, Department of Surgery, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Dolores J Lamb
- Center for Reproductive Genomics, Weill Cornell Medical College, New York, NY, USA
- Englander Institute for Precision Medicine, Weill Cornell Medical College, New York, NY, USA
- Department of Urology, Weill Cornell Medical College, New York, NY, USA
| | - James M Hotaling
- Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Kathleen Hwang
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Yu-Sheng Cheng
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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2
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Abbassi M, Sayel H, El Mouhi H, Jelte M, Ahakoud M. A Case of Severe Teratozoospermia and Infertility Due to Homozygous Mutation c.144delC in the AURKC Gene. Cureus 2023; 15:e43376. [PMID: 37700958 PMCID: PMC10494959 DOI: 10.7759/cureus.43376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2023] [Indexed: 09/14/2023] Open
Abstract
This case report focuses on a 33-year-old male patient with a history of infertility, characterized by severe micro-oligo-asthenospermia. Subsequent analysis revealed the presence of multi-headed and multi-flagellated spermatozoa, indicating a potential case of macrocephalic spermatozoa syndrome linked to a mutation in the AURKC gene. Genetic testing confirmed the presence of a pathogenic mutation, c.144delC, in a homozygous state in the AURKC gene. The AURKC gene is known to play a vital role in meiosis during sperm production, and its mutation can lead to abnormalities in sperm morphology and function, resulting in conditions like macrozoospermia and male infertility. Additionally, the patient was diagnosed with a grade III varicocele on the left testicle, which further contributed to his infertility. Varicoceles are associated with decreased sperm production and quality, making them one of the common reversible causes of male infertility. This case highlights the significance of comprehensive diagnostic approaches, including spermogram, ultrasonography, and genetic testing, in managing male infertility cases. It also emphasizes the intricate interplay between genetic mutations and physical conditions in the manifestation of male infertility. Further research is warranted to elucidate the mechanisms underlying AURKC-related sperm abnormalities and to develop effective therapeutic interventions. Moreover, a deeper understanding of such genetic factors may aid in the development of genetic counseling strategies for couples experiencing infertility.
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Affiliation(s)
- Meriame Abbassi
- Laboratory of Biomedical and Translational Research, Faculty of Medicine and Pharmacy and Dental Medicine, Sidi Mohammed Ben Abdellah University, Fez, MAR
| | - Hanane Sayel
- Medical Genetics and Oncogenetics Laboratory, Central Laboratory of Medical Analysis, University Hospital Center Hassan II, Fez, MAR
| | - Hinde El Mouhi
- Laboratory of Biomedical and Translational Research, Faculty of Medicine and Pharmacy and Dental Medicine, Sidi Mohammed Ben Abdellah University, Fez, MAR
- Center for Doctoral Studies Engineering Sciences and Techniques, Faculty of Sciences and Technologies, Sidi Mohammed Ben Abdellah University, Fez, MAR
- Medical Genetics and Oncogenetics Laboratory, Central Laboratory of Medical Analysis, University Hospital Center Hassan II, Fez, MAR
| | - Meryem Jelte
- Laboratory of Biotechnology, Environment, Agri-Food and Health, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, MAR
- Medical Genetics and Oncogenetics Laboratory, Central Laboratory of Medical Analysis, University Hospital Center Hassan II, Fez, MAR
| | - Mohamed Ahakoud
- Medical Genetics and Oncogenetics Laboratory, Central Laboratory of Medical Analysis, University Hospital Center Hassan II, Fez, MAR
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Minhas S, Bettocchi C, Boeri L, Capogrosso P, Carvalho J, Cilesiz NC, Cocci A, Corona G, Dimitropoulos K, Gül M, Hatzichristodoulou G, Jones TH, Kadioglu A, Martínez Salamanca JI, Milenkovic U, Modgil V, Russo GI, Serefoglu EC, Tharakan T, Verze P, Salonia A. European Association of Urology Guidelines on Male Sexual and Reproductive Health: 2021 Update on Male Infertility. Eur Urol 2021; 80:603-620. [PMID: 34511305 DOI: 10.1016/j.eururo.2021.08.014] [Citation(s) in RCA: 239] [Impact Index Per Article: 79.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 08/20/2021] [Indexed: 12/19/2022]
Abstract
CONTEXT The European Association of Urology (EAU) has updated its guidelines on sexual and reproductive health for 2021. OBJECTIVE To present a summary of the 2021 version of the EAU guidelines on sexual and reproductive health, including advances and areas of controversy in male infertility. EVIDENCE ACQUISITION The panel performed a comprehensive literature review of novel data up to January 2021. The guidelines were updated and a strength rating for each recommendation was included that was based either on a systematic review of the literature or consensus opinion from the expert panel, where applicable. EVIDENCE SYNTHESIS The male partner in infertile couples should undergo a comprehensive urological assessment to identify and treat any modifiable risk factors causing fertility impairment. Infertile men are at a higher risk of harbouring and developing other diseases including malignancy and cardiovascular disease and should be screened for potential modifiable risk factors, such as hypogonadism. Sperm DNA fragmentation testing has emerged as a novel biomarker that can identify infertile men and provide information on the outcomes from assisted reproductive techniques. The role of hormone stimulation therapy in hypergonadotropic hypogonadal or eugonadal patients is controversial and is not recommended outside of clinical trials. Furthermore, there is insufficient evidence to support the widespread use of other empirical treatments and surgical interventions in clinical practice (such as antioxidants and surgical sperm retrieval in men without azoospermia). There is low-quality evidence to support the routine use of testicular fine-needle mapping as an alternative diagnostic and predictive tool before testicular sperm extraction (TESE) in men with nonobstructive azoospermia (NOA), and either conventional or microdissection TESE remains the surgical modality of choice for men with NOA. CONCLUSIONS All infertile men should undergo a comprehensive urological assessment to identify and treat any modifiable risk factors. Increasing data indicate that infertile men are at higher risk of cardiovascular mortality and of developing cancers and should be screened and counselled accordingly. There is low-quality evidence supporting the use of empirical treatments and interventions currently used in clinical practice; the efficacy of these therapies needs to be validated in large-scale randomised controlled trials. PATIENT SUMMARY Approximately 50% of infertility will be due to problems with the male partner. Therefore, all infertile men should be assessed by a specialist with the expertise to not only help optimise their fertility but also because they are at higher risk of developing cardiovascular disease and cancer long term and therefore require appropriate counselling and management. There are many treatments and interventions for male infertility that have not been validated in high-quality studies and caution should be applied to their use in routine clinical practice.
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Affiliation(s)
- Suks Minhas
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK.
| | | | - Luca Boeri
- Department of Urology, Foundation IRCCS Ca' Granda - Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Paolo Capogrosso
- Department of Urology and Andrology, Ospedale di Circolo and Macchi Foundation, Varese, Italy
| | - Joana Carvalho
- CPUP: Center for Psychology of Porto University, Faculty of Psychology and Educational Sciences, Porto University, Porto, Portugal
| | - Nusret Can Cilesiz
- Department of Urology, Taksim Training & Research Hospital, Istanbul, Turkey
| | - Andrea Cocci
- Department of Minimally Invasive and Robotic Urologic Surgery and Kidney Transplantation, University of Florence, Florence, Italy
| | - Giovanni Corona
- Endocrinology Unit, Medical Department, Maggiore-Bellaria Hospital, Bologna, Italy
| | - Konstantinos Dimitropoulos
- Academic Urology Unit, Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK; Department of Urology, Aberdeen Royal Infirmary, NHS Grampian, Aberdeen, UK
| | - Murat Gül
- School of Medicine, Department of Urology, Selcuk University, Konya, Turkey
| | | | - Thomas Hugh Jones
- Centre for Diabetes and Endocrinology, Barnsley Hospital NHS Trust, Barnsley, UK
| | - Ates Kadioglu
- Department of Urology, İstanbul University İstanbul School of Medicine, İstanbul, Turkey
| | | | - Uros Milenkovic
- Department of Urology, University Hospitals Leuven, Leuven, Belgium
| | - Vaibhav Modgil
- Manchester Andrology Centre, Manchester Royal Infirmary, Manchester University Hospitals NHS Foundation Trust, UK
| | - Giorgio Ivan Russo
- Urology Section, Department of Surgery, University of Catania, Catania, Italy
| | - Ege Can Serefoglu
- Department of Urology, Biruni University School of Medicine, Istanbul, Turkey
| | - Tharu Tharakan
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - Paolo Verze
- Department of Medicine and Surgery, Scuola Medica Salernitana, University of Salerno, Fisciano, Italy
| | - Andrea Salonia
- Division of Experimental Oncology/Unit of Urology, Urological Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
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Altered Biology of Testicular VSELs and SSCs by Neonatal Endocrine Disruption Results in Defective Spermatogenesis, Reduced Fertility and Tumor Initiation in Adult Mice. Stem Cell Rev Rep 2021; 16:893-908. [PMID: 32592162 DOI: 10.1007/s12015-020-09996-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Reproductive health of men has declined in recent past with reduced sperm count and increased incidence of infertility and testicular cancers mainly attributed to endocrine disruption in early life. Present study aims to evaluate whether testicular stem cells including very small embryonic-like stem cells (VSELs) and spermatogonial stem cells (SSCs) get affected by endocrine disruption and result in pathologies in adult life. Effect of treatment on mice pups with estradiol (20 μg on days 5-7) and diethylstilbestrol (DES, 2 μg on days 1-5) was studied on VSELs, SSCs and spermatogonial cells in adult life. Treatment affected spermatogenesis, tubules in Stage VIII & sperm count were reduced along with reduction of meiotic (4n) cells and markers (Prohibitin, Scp3, Protamine). Enumeration of VSELs by flow cytometry (2-6 μm, 7AAD-, LIN-CD45-SCA-1+) and qRT-PCR using specific transcripts for VSELs (Oct-4a, Sox-2, Nanog, Stella, Fragilis), SSCs (tOct-4, Gfra-1, Gpr-125) and early germ cells (Mvh, Dazl) showed several-fold increase but transition from c-Kit negative to c-Kit positive spermatogonial cells was blocked on D100 after treatment. Transcripts specific for apoptosis (Bcl2, Bax) remained unaffected but tumor suppressor (p53) and epigenetic regulator (NP95) transcripts showed marked disruption. 9 of 10 mice exposed to DES showed tumor-like changes. To conclude, endocrine disruption resulted in a tilt towards excessive self-renewal of VSELs (leading to testicular cancer after DES treatment) and blocked differentiation (reduced numbers of c-Kit positive cells, meiosis, sperm count and fertility). Understanding the underlying basis for infertility and cancer initiation from endogenous stem cells through murine modelling will hopefully improve human therapies in future.
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Infertilidad masculina: causas y diagnóstico. REVISTA MÉDICA CLÍNICA LAS CONDES 2021. [DOI: 10.1016/j.rmclc.2021.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Pinho A, Barros A, Fernandes S. Clinical and molecular characterization of Y microdeletions and X-linked CNV67 implications in male fertility: a 20-year experience. Andrology 2019; 8:307-314. [PMID: 31355535 DOI: 10.1111/andr.12686] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 06/28/2019] [Accepted: 07/01/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Approximately 15% of couples worldwide are affected with infertility, attributed to a male co-factor in about half of the cases. Y chromosome microdeletions are the second most common genetic cause for male infertility, with a global prevalence of 2-10% in infertile men. Recently, CNV67, localized in X chromosome, has emerged as potential contributor to male infertility, with a described frequency of 1.1% in the oligo/azoospermic men. OBJECTIVES To investigate the prevalence of Y-linked CNVs in a cohort of Portuguese infertile men and correlate the patients' phenotypes with a genetic alteration; to investigate the CNV67 deletion in a subset of patients and corroborate the role of this CNV in male infertility. MATERIALS AND METHODS We retrospectively analysed a database of 4000 Portuguese infertile men for karyotype anomalies and Y microdeletions and selected a cohort of 400 for CNV67 screening analysis by quantitative PCR or single PCR plus/minus. RESULTS Karyotype anomalies were present in 263 patients (6.6%), with Klinefelter syndrome representing the most frequent karyotype anomaly (2.8%). Among the 4000 patients, the prevalence of Yq microdeletions was 4.6%. Ninety microdeletions (10.0%) were found in the azoospermic group, 44 deletions (4.5%) in the severe oligozoospermic group, 1 AZFc partial deletion (0.3%) in the mild-moderate oligozoospermic group and 2 partial AZFc deletions (0.4%) in the normozoospermic group. Complete AZFc deletions represented 56.8% of the Yq microdeletions. The CNV67 deletion frequency was 1.2% in the studied sample. CONCLUSIONS This study presents one of the largest samples of infertile men worldwide with the main purpose of correlating the Yq microdeletions with sperm count. Our findings are supported by previous reviews with large data and provide a reliable estimation of the prevalence of these anomalies in a Portuguese population. CNV67 was exclusively deleted in patients with spermatogenic impairment, showing a consistent genotype-phenotype correlation and a significant prevalence.
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Affiliation(s)
- A Pinho
- Genetic Unit, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Barros
- Genetic Unit, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.,Centre for Reproductive Genetics A Barros, Porto, Portugal
| | - S Fernandes
- Genetic Unit, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
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Oud MS, Volozonoka L, Smits RM, Vissers LELM, Ramos L, Veltman JA. A systematic review and standardized clinical validity assessment of male infertility genes. Hum Reprod 2019; 34:932-941. [PMID: 30865283 PMCID: PMC6505449 DOI: 10.1093/humrep/dez022] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/14/2018] [Accepted: 02/11/2019] [Indexed: 02/06/2023] Open
Abstract
STUDY QUESTION Which genes are confidently linked to human monogenic male infertility? SUMMARY ANSWER Our systematic literature search and clinical validity assessment reveals that a total of 78 genes are currently confidently linked to 92 human male infertility phenotypes. WHAT IS KNOWN ALREADY The discovery of novel male infertility genes is rapidly accelerating with the availability of next-generating sequencing methods, but the quality of evidence for gene-disease relationships varies greatly. In order to improve genetic research, diagnostics and counseling, there is a need for an evidence-based overview of the currently known genes. STUDY DESIGN, SIZE, DURATION We performed a systematic literature search and evidence assessment for all publications in Pubmed until December 2018 covering genetic causes of male infertility and/or defective male genitourinary development. PARTICIPANTS/MATERIALS, SETTING, METHODS Two independent reviewers conducted the literature search and included papers on the monogenic causes of human male infertility and excluded papers on genetic association or risk factors, karyotype anomalies and/or copy number variations affecting multiple genes. Next, the quality and the extent of all evidence supporting selected genes was weighed by a standardized scoring method and used to determine the clinical validity of each gene-disease relationship as expressed by the following six categories: no evidence, limited, moderate, strong, definitive or unable to classify. MAIN RESULTS AND THE ROLE OF CHANCE From a total of 23 526 records, we included 1337 publications about monogenic causes of male infertility leading to a list of 521 gene-disease relationships. The clinical validity of these gene-disease relationships varied widely and ranged from definitive (n = 38) to strong (n = 22), moderate (n = 32), limited (n = 93) or no evidence (n = 160). A total of 176 gene-disease relationships could not be classified because our scoring method was not suitable. LARGE SCALE DATA Not applicable. LIMITATIONS, REASONS FOR CAUTION Our literature search was limited to Pubmed. WIDER IMPLICATIONS OF THE FINDINGS The comprehensive overview will aid researchers and clinicians in the field to establish gene lists for diagnostic screening using validated gene-disease criteria and help to identify gaps in our knowledge of male infertility. For future studies, the authors discuss the relevant and important international guidelines regarding research related to gene discovery and provide specific recommendations for the field of male infertility. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by a VICI grant from The Netherlands Organization for Scientific Research (918-15-667 to J.A.V.), the Royal Society, and Wolfson Foundation (WM160091 to J.A.V.) as well as an investigator award in science from the Wellcome Trust (209451 to J.A.V.). PROSPERO REGISTRATION NUMBER None.
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Affiliation(s)
- Manon S Oud
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ludmila Volozonoka
- Institute of Genetic Medicine, Newcastle University, Newcastle, United Kingdom
- Scientific Laboratory of Molecular Genetics, Riga Stradins University, Riga, Latvia
| | - Roos M Smits
- Department of Obstetrics and Gynecology, Division of Reproductive Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Lisenka E L M Vissers
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Liliana Ramos
- Department of Obstetrics and Gynecology, Division of Reproductive Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Joris A Veltman
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
- Institute of Genetic Medicine, Newcastle University, Newcastle, United Kingdom
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Liker K, Black L, Weil J, Bruce J, Bereknyei Merrell S, Bivona S, Ormond KE. Challenges of infertility genetic counseling: Impact on counselors' personal and professional lives. J Genet Couns 2019; 28:626-640. [PMID: 30821877 DOI: 10.1002/jgc4.1106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/27/2019] [Accepted: 01/28/2019] [Indexed: 11/07/2022]
Abstract
Infertility genetic counselors (GCs) work with patients struggling to become pregnant who desire genetic testing of embryos and preconception genetic testing or carrier screening. Because personal and professional challenges have not been examined in this relatively new genetic counseling specialty, we investigated the difficulties infertility GCs face in their professional roles. Past and present infertility GCs in patient-facing roles were recruited through the National Society of Genetic Counselors. Purposive sampling ensured participants were diverse in clinical setting, reproductive history, and other demographics. Nineteen participants completed a semi-structured interview, at which time data saturation occurred. Thematic analysis revealed infertility GCs consider their patients more emotionally stressed than patients in other specialties. Infertility GCs relate easily to patients, build long-term patient relationships, and feel invested in the reproductive successes of patients. Participants reported heightened concern for their own fertility, leading to high personal uptake of preconception genetic and fertility tests. Participants described discomfort when counseling while visibly pregnant and reluctance to disclose their own reproductive histories. Further research is needed on the complex interactions of GCs' personal and professional lives. Peer support groups and professional dialogue about the personal effects of the role may be beneficial for infertility GCs.
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Affiliation(s)
- Karina Liker
- Department of Genetics, Stanford University School of Medicine, Stanford, California
| | - Lauri Black
- Pacific Reproductive Genetic Counseling, Pacifica, California
| | - Jon Weil
- Department of Biological Sciences, California State University Stanislaus, Turlock, California
| | - Janine Bruce
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California
| | - Sylvia Bereknyei Merrell
- Department of Surgery, Stanford-Surgery Policy Improvement Research and Education Center (S-SPIRE), Stanford University School of Medicine, Stanford, California
| | - Stephanie Bivona
- Department of Genetics, Stanford University School of Medicine, Stanford, California
| | - Kelly E Ormond
- Department of Genetics, Stanford University School of Medicine, Stanford, California
- Stanford Center for Biomedical Ethics, Stanford University School of Medicine, Stanford, California
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Two cases of complex balanced autosomal translocations associated with severe oligozoospermia. Gene 2018; 663:126-130. [PMID: 29684482 DOI: 10.1016/j.gene.2018.04.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/21/2018] [Accepted: 04/18/2018] [Indexed: 11/24/2022]
Abstract
Complex balanced autosomal translocation is rare and can lead to impaired spermatogenesis in males; however, its effects on oligozoospermia have rarely been reported. We report here two cases of rare complex balanced translocation in men with infertility. The karyotype of the first case was 46,XY,der(1)t(1;12)(p22;p11.2)ins(9;1)(p24;q25q23),der(9)ins(9;1),der(12)t(1;12)·ish der(1)t(1;12)(RP11-636B1+;RP11-659D23+)ins(9;1)(RP11-118P13+),der(9)ins(9;1),der(12)t(1;12). And the patient showed severe oligozoospermia with adult schizophrenia without other abnormalities. The karyotype of the second patient was 46,XY,der(5)t(5;11)(q14;p11.2),der(11)t(11;18)(p11.2;q11.2),der(18)t(5,18)(q14;p11.3)add(18)(q11.2?)·ish der(5)t(5;11)(RP11-846K3+,RP11-89B9+),der(11)t(11;18)(RP11-89B9-,RP11-170L12+,RP11-469N6+),der(18)t(5;18)(RP11-125L2+,RP11-29M13+)add(18)(q11.2?), and the patient displayed severe oligozoospermia without other abnormalities. The two cases were verified by fluorescent in situ hybridization, and no abnormalities were found by genome-wide copy number variation analysis. To our knowledge, these two cases of complex autosomal karyotypes have not been reported previously. Although rare, these cases suggest that complex balanced translocations may be important causes of oligozoospermia. We speculate that the balanced translocation hinders germ cell meiosis and causes impaired spermatogenesis. Accordingly, the two reported patients have very low probabilities of giving birth to a normal child; therefore, we suggest choosing donor semen or adopting a child.
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Hsu PC, Li MC, Lee YC, Kuo PL, Guo YL. Polychlorinated biphenyls and dibenzofurans increased abnormal sperm morphology without alterations in aneuploidy: The Yucheng study. CHEMOSPHERE 2016; 165:294-297. [PMID: 27662390 DOI: 10.1016/j.chemosphere.2016.09.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/29/2016] [Accepted: 09/10/2016] [Indexed: 06/06/2023]
Abstract
In 1979, more than 2000 persons ingested rice oil contaminated with polychlorinated biphenyls and polychlorinated dibenzofurans; this event was called the "Yucheng accident." An increased percentage of oligospermia, reduced ability of sperm to penetrate oocytes, and reduced percentage of male offspring were reported in Yucheng men. This study examined whether the sperm sex ratio and chromosome aneuploidy are responsible for our observed findings in Yucheng men. In 1999-2000, Yucheng men and their neighborhood referents aged 37-50 years were recruited for physical examination, followed by semen analysis. The semen samples were analyzed for chromosomal aneuploidy through fluorescent in situ hybridization according to an established procedure in our laboratory. A total of 50 Yucheng men and 34 neighborhood referents volunteered to participate in the study. Although abnormal morphology was mildly increased, no differences were observed in sperm percentages, with normal numbers of chromosomes X, Y, and 8 in the two groups. The percentage of sperm with aneuploidy of the sex chromosomes or chromosome 8 and of that with diploidy did not vary between both groups. The normal X/Y sperm ratio was not different between the groups. However, among Yucheng men, 8% had a normal X/Y sperm ratio of >1.4, and no neighborhood referent showed such an elevated X/Y ratio. Chromosomal aneuploidy was not elevated in Yucheng men. The mechanisms underlying the reduced sperm capability of oocyte penetration and changed offspring sex ratio in Yucheng men remain undetermined.
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Affiliation(s)
- Ping-Chi Hsu
- Department of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 811, Taiwan
| | - Ming-Chieh Li
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli 350, Taiwan; Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei 100, Taiwan
| | - Yeu-Chin Lee
- Assisted Reproductive Technology Center, An-An Women and Children Clinic, Tainan 704, Taiwan
| | - Pao-Lin Kuo
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, Tainan 701, Taiwan
| | - Yueliang Leon Guo
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli 350, Taiwan; Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei 100, Taiwan; Department of Environmental and Occupational Medicine, National Taiwan University (NTU) and NTU Hospital, Taipei 100, Taiwan.
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Abstract
The number of publications on research of male infertility is increasing. Technologies used in research of male infertility generate complex results and various types of data that need to be appropriately managed, arranged, and made available to other researchers for further use. In our previous study, we collected over 800 candidate loci for male fertility in seven mammalian species. However, the continuation of the work towards a comprehensive database of candidate genes associated with different types of idiopathic human male infertility is challenging due to fragmented information, obtained from a variety of technologies and various omics approaches. Results are published in different forms and usually need to be excavated from the text, which hinders the gathering of information. Standardized reporting of genetic anomalies as well as causative and risk factors of male infertility therefore presents an important issue. The aim of the study was to collect examples of diverse genomic loci published in association with human male infertility and to propose a standardized format for reporting genetic causes of male infertility. From the currently available data we have selected 75 studies reporting 186 representative genomic loci which have been proposed as genetic risk factors for male infertility. Based on collected and formatted data, we suggested a first step towards unification of reporting the genetics of male infertility in original and review studies. The proposed initiative consists of five relevant data types: 1) genetic locus, 2) race/ethnicity, number of participants (infertile/controls), 3) methodology, 4) phenotype (clinical data, disease ontology, and disease comorbidity), and 5) reference. The proposed form for standardized reporting presents a baseline for further optimization with additional genetic and clinical information. This data standardization initiative will enable faster multi-omics data integration, database development and sharing, establishing more targeted hypotheses, and facilitating biomarker discovery.
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Affiliation(s)
- Eva Traven
- a Department of Animal Science, Biotechnical Faculty , University of Ljubljana , Slovenia
| | - Ana Ogrinc
- a Department of Animal Science, Biotechnical Faculty , University of Ljubljana , Slovenia.,b Insitute for Immunology , LMU Munich , Munich , Germany
| | - Tanja Kunej
- a Department of Animal Science, Biotechnical Faculty , University of Ljubljana , Slovenia
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Samango-Sprouse C, Kırkızlar E, Hall MP, Lawson P, Demko Z, Zneimer SM, Curnow KJ, Gross S, Gropman A. Incidence of X and Y Chromosomal Aneuploidy in a Large Child Bearing Population. PLoS One 2016; 11:e0161045. [PMID: 27512996 PMCID: PMC4981345 DOI: 10.1371/journal.pone.0161045] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 06/23/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND X&Y chromosomal aneuploidies are among the most common human whole-chromosomal copy number changes, but the population-based incidence and prevalence in the child-bearing population is unclear. METHODS This retrospective analysis of prospectively collected data leveraged a routine non-invasive prenatal test (NIPT) using parental genotyping to estimate the population-based incidence of X&Y chromosome variations in this population referred for NIPT (generally due to advanced maternal age). RESULTS From 141,916 women and 29,336 men, 119 X&Y chromosomal abnormalities (prevalence: 1 in 1,439) were identified. Maternal findings include: 43 cases of 45,X (40 mosaic); 30 cases of 47,XXX (12 mosaic); 3 cases of 46,XX uniparental disomy; 2 cases of 46,XY/46,XX; 23 cases of mosaicism of unknown type; 2 cases of 47,XX,i(X)(q10). Paternal findings include: 2 cases of 47,XXY (1 mosaic); 10 cases of 47,XYY (1 mosaic); 4 partial Y deletions. CONCLUSIONS Single chromosome aneuploidy was present in one of every 1,439 individuals considered in this study, showing 47,XXX; 47,XX,i(X)(q10); 47,XYY; 47,XXY, partial Y deletions, and a high level of mosaicism for 45,X. This expands significantly our understanding of X&Y chromosomal variations and fertility issues, and is critical for families and adults affected by these disorders. This current and extensive information on fertility will be beneficial for genetic counseling on prenatal diagnoses as well as for newly diagnosed postnatal cases.
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Affiliation(s)
- Carole Samango-Sprouse
- Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
- The Focus Foundation, Davidsonville, Maryland, United States of America
- * E-mail:
| | - Eser Kırkızlar
- Natera Inc., San Carlos, California, United States of America
| | - Megan P. Hall
- Natera Inc., San Carlos, California, United States of America
| | - Patrick Lawson
- The Focus Foundation, Davidsonville, Maryland, United States of America
| | - Zachary Demko
- Natera Inc., San Carlos, California, United States of America
| | | | | | - Susan Gross
- Natera Inc., San Carlos, California, United States of America
| | - Andrea Gropman
- Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, D.C., United States of America
- Department of Neurology and Pediatrics, Children’s National Medical Center, Washington, D.C., United States of America
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13
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CURRENT STATE OF THE MALE INFERTILITY PROBLEM:THE REVIEW OF EUROPEAN ASSOCIATION OF UROLOGY CLINICAL GUIDELINES. КЛИНИЧЕСКАЯ ПРАКТИКА 2016. [DOI: 10.17816/clinpract7139-50] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The article highlights the problem of male infertility on the basis of review of the latest guidelines of European Association of urology
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Bianco B, Christofolini DM, Ghersel FR, Gava MM, Barbosa CP. XX testicular disorder of sex differentiation: case report. EINSTEIN-SAO PAULO 2016; 9:394-6. [PMID: 26761113 DOI: 10.1590/s1679-45082011rc1862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 06/30/2011] [Indexed: 11/22/2022] Open
Abstract
The 46 XX, testicular sex differentiation disorder, or XX male syndrome, is a rare condition detected by cytogenetics, in which testicular development occurs in the absence of the Y chromosome. It occurs in 1:20,000 to 25,000 male newborns and represents 2% of cases of male infertility. About 90% of individuals present with normal phenotype at birth and are generally diagnosed after puberty for hypoganadism, gynecomastia, and/or infertility. The authors present the report of an XX male with complete masculinization and infertility.
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Affiliation(s)
- Bianca Bianco
- Faculdade de Medicina do ABC - FMABC, Santo Andre, SP, BR
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Chen P, Wang X, Xu C, Xiao H, Zhang WH, Wang XH, Zhang XH. Association of polymorphisms of A260G and A386G in DAZL gene with male infertility: a meta-analysis and systemic review. Asian J Androl 2016; 18:96-101. [PMID: 25994644 PMCID: PMC4736364 DOI: 10.4103/1008-682x.153542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/19/2014] [Accepted: 02/02/2015] [Indexed: 12/28/2022] Open
Abstract
To investigate the association of single nucleotide polymorphism 260 and 386 (SNP260 and SNP386) gene with male infertility, an electronic search was performed to identify case-control studies evaluating the relationship of SNP260 or SNP386 of deleted in azoospermia-like (DAZL) and male infertility. Review Manager 5 was used to process the meta-analysis and other statistical analysis. A total of 139 records were retrieved, of which 13 case-control studies with total 2715 patients and 1835 normozoospermic men were included. SNP260 was found not to play a functional role in male oligo/azoospermia either for Caucasians or for Asians. But for SNP386, models of allele (A/G), dominant (AA/AG + GG), co-dominant (AA/AG) and super-dominant (AA + GG/AG) had a strong correlation to spermatogenic failure with related odds ratio being 0.15 (95% confidence interval [95% CI] 0.07 to 0.34, P < 0.00001), 0.16 (95% CI 0.07 to 0.35, P < 0.00001), 0.15 (95% CI 0.06 to 0.33, P < 0.00001) and 0.15 (95% CI 0.06 to 0.33, P < 0.00001), respectively. Moreover, this correlation was only found in the Chinese Han population (decreasing around 85% risk of oligo/azoospermia infertility) and not found in India, Japan, and Caucasian countries. Our analysis demonstrated that SNP260 of DAZL did not contribute to oligo/azoospermia while SNP386 was correlated to male infertility. However, this correlation was only found in China with a country-specific and ethnicity-specific manner.
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Affiliation(s)
- Ping Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xiao Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Chang Xu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - He Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Wen-Hao Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xing-Huan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xin-Hua Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
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Radwan M, Jurewicz J, Sobala W, Brze Nicki S, Radwan P, Jakubowski L, Hawuła W, Ulańska A, Hanke W. Human sperm aneuploidy after exposure to polycyclic aromatic hydrocarbons. Reprod Fertil Dev 2015; 28:RD14063. [PMID: 25751082 DOI: 10.1071/rd14063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 01/29/2015] [Indexed: 12/20/2022] Open
Abstract
The purpose of this cross-sectional study was to investigate whether environmental exposure to polycyclic aromatic hydrocarbons (PAHs) was associated with sperm aneuploidy. A sample of 181 men who attended an infertility clinic for diagnostic purposes and who had a normal semen concentration of 20-300×106 spermatozoa mL-1 or slight oligozoospermia (semen concentration of 15-20×106 spermatozoa mL-1;
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17
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Tu W, Liu Y, Shen Y, Yan Y, Wang X, Yang D, Li L, Ma Y, Tao D, Zhang S, Yang Y. Genome-Wide Loci Linked to Non-Obstructive Azoospermia Susceptibility May Be Independent of Reduced Sperm Production in Males with Normozoospermia1. Biol Reprod 2015; 92:41. [DOI: 10.1095/biolreprod.114.125237] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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18
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You YA, Park YJ, Kwon WS, Yoon SJ, Ryu BY, Kim YJ, Pang MG. Increased frequency of aneuploidy in long-lived spermatozoa. PLoS One 2014; 9:e114600. [PMID: 25490252 PMCID: PMC4260881 DOI: 10.1371/journal.pone.0114600] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 11/12/2014] [Indexed: 11/18/2022] Open
Abstract
Aneuploidy commonly causes spontaneous abortions, stillbirths, and aneuploid births in humans. Notably, the majority of sex chromosome aneuploidies in live births have a paternal origin. An increased frequency of aneuploidy is also associated with male infertility. However, the dynamics and behavior of aneuploid spermatozoa during fertilization in humans have not been studied in detail. Therefore, we compared the frequency of aneuploidy and euploidy in live spermatozoa from normozoospermic men over a 3-day period. To assess the dynamics and behavior of aneuploid spermatozoa, we simultaneously evaluated sperm viability using the hypo-osmotic swelling test and sperm aneuploidy using fluorescence in situ hybridization. Whereas the frequency of viable euploid spermatozoa significantly decreased over 3 days, the frequency of viable spermatozoa with aneuploidy interestingly showed a time-dependent increase. In addition, spermatozoa with abnormal sex chromosomes survived longer. To compared with spermatozoa with other swelling patterns, those with tail-tip swelling patterns had a lower frequency of aneuploidy at all time points. This study revealed the novel finding that the frequency of aneuploid spermatozoa with fertilization capability significantly increased compared to that of euploid spermatozoa over 3 days, suggesting that aneuploid spermatozoa can survive longer than euploid spermatozoa and have a greater chance of fertilizing oocytes.
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Affiliation(s)
- Young-Ah You
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Yoo-Jin Park
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Woo-Sung Kwon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Sung-Jae Yoon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Buom-Yong Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul 158–710, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
- * E-mail:
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Gambera L, Morgante G, Serafini F, Stendardi A, Orvieto R, De Leo V, Petraglia F, Piomboni P. Human sperm aneuploidy: FISH analysis in fertile and infertile men. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/eog.11.57] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Okun N, Sierra S, Douglas Wilson R, Audibert F, Brock JA, Campagnolo C, Carroll J, Cartier L, Chitayat D, Gagnon A, Johnson JA, Langlois S, Murphy-Kaulbeck L, Kim MacDonald W, Okun N, Pastuck M, Tan LY, Poplak V, Robson H. Pregnancy Outcomes After Assisted Human Reproduction. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2014; 36:64-83. [DOI: 10.1016/s1701-2163(15)30685-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Piomboni P, Stendardi A, Gambera L. Chromosomal Aberrations and Aneuploidies of Spermatozoa. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 791:27-52. [DOI: 10.1007/978-1-4614-7783-9_3] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Johnson LN, Sasson IE, Sammel MD, Dokras A. Does intracytoplasmic sperm injection improve the fertilization rate and decrease the total fertilization failure rate in couples with well-defined unexplained infertility? A systematic review and meta-analysis. Fertil Steril 2013; 100:704-11. [DOI: 10.1016/j.fertnstert.2013.04.038] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/05/2013] [Accepted: 04/11/2013] [Indexed: 11/17/2022]
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Abstract
Male infertility affects 1 in 20 men and is the sole or contributory factor in half of assisted reproductive treatments (ARTs). A reduced sperm density (oligozoospermia) is often accompanied by poor motility and morphology reflecting qualitative and quantitative defects in spermatogenesis. Many reproductive and nonreproductive disorders and treatments may be responsible, but most cases remain unexplained (idiopathic). A thorough evaluation may identify treatable causes and allow natural fertility. Comorbidities more prevalent in infertile men, especially androgen deficiency and testicular cancer, should be sought. Idiopathic spermatogenic disorders are common, but evidence-based treatment is not available; full evaluation informs management and the decision to pursue ART using the low numbers of functional sperm available. Chromosomal anomalies may impact the chance of a normal healthy pregnancy, and new genetic causes of oligozoospermia are being discovered. ART, particularly intracytoplasmic sperm injection, bypasses instead of treats the sperm defect but has dramatically improved the fertility prospects. The clinical approach to the oligozoospermic man involves understanding reproductive endocrinology, aspects of urology and clinical genetics, modern ART options, and the realistic discussion of their outcomes, alternatives such as adoption or donor gametes, and appreciation of the psychosocial concerns of the couple.
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Affiliation(s)
- Robert I McLachlan
- Prince Henry's Institute of Medical Research, P.O. Box 5152, Clayton 3168, Australia.
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24
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Hamada AJ, Esteves SC, Agarwal A. A comprehensive review of genetics and genetic testing in azoospermia. Clinics (Sao Paulo) 2013; 68 Suppl 1:39-60. [PMID: 23503954 PMCID: PMC3583155 DOI: 10.6061/clinics/2013(sup01)06] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 09/06/2012] [Indexed: 12/22/2022] Open
Abstract
Azoospermia due to obstructive and non-obstructive mechanisms is a common manifestation of male infertility accounting for 10-15% of such cases. Known genetic factors are responsible for approximately 1/3 of cases of azoospermia. Nonetheless, at least 40% of cases are currently categorized as idiopathic and may be linked to unknown genetic abnormalities. It is recommended that various genetic screening tests are performed in azoospermic men, given that their results may play vital role in not only identifying the etiology but also in preventing the iatrogenic transmission of genetic defects to offspring via advanced assisted conception techniques. In the present review, we examine the current genetic information associated with azoospermia based on results from search engines, such as PUBMED, OVID, SCIENCE DIRECT and SCOPUS. We also present a critical appraisal of use of genetic testing in this subset of infertile patients.
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Affiliation(s)
- Alaa J Hamada
- Cleveland Clinic, Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland, Ohio, USA
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Chiang HS, Wu YN, Wu CC, Hwang JL. Cytogenic and molecular analyses of 46,XX male syndrome with clinical comparison to other groups with testicular azoospermia of genetic origin. J Formos Med Assoc 2012; 112:72-8. [PMID: 23380608 DOI: 10.1016/j.jfma.2012.02.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 02/07/2012] [Accepted: 02/08/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/PURPOSE XX male is a rare sex chromosomal disorder in infertile men. The purpose of this study was to distinguish the clinical and genetic features of the 46,XX male syndrome from other more frequent, testicular-origin azoospermic causes of male infertility. METHODS To study 46,XX male syndrome, we compared clinical and endocrinological parameters to other groups with testicular-origin azoospermia, and to an age-matched group of healthy males and females as normal control. Fluorescent in situ hybridization for detection and localization of the sex-determining region of the Y gene (SRY), array-based comparative genomic hybridization screening, and real-time qualitative polymerase chain reaction of FGF9, WT1, NR5A1, and SPRY2 genes were performed in this genetic investigation. RESULTS Our three patients with 46,XX male syndrome had a much higher follicular-stimulating hormone level, lower body height, lower testosterone level, and ambiguous external genitalia. One of the three patients with 46,XX male syndrome was SRY-negative. A further genetic study, including a comparative genomic hybridization array and real-time polymerase chain reaction, showed a gain of FGF9 copy numbers only in the SRY-negative 46,XX male. The genetic copy number of the FGF9 gene was duplicated in that case compared to the normal female control and was significantly lower than that of the normal male control. No such genomic gain was observed in the case of the two SRY-positive 46,XX males. CONCLUSION Similar to clinical manifestations of 46,XX male syndrome, genetic evidence in this study suggests that FGF9 may contribute to sex reversal, but additional confirmation with more cases is still needed.
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Affiliation(s)
- Han-Sun Chiang
- Graduate Institute of Basic Medicine, College of Medicine, Fu Jen Catholic University, Taipei, Taiwan
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Jungwirth A, Giwercman A, Tournaye H, Diemer T, Kopa Z, Dohle G, Krausz C. European Association of Urology guidelines on Male Infertility: the 2012 update. Eur Urol 2012; 62:324-32. [PMID: 22591628 DOI: 10.1016/j.eururo.2012.04.048] [Citation(s) in RCA: 550] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 04/24/2012] [Indexed: 12/11/2022]
Abstract
CONTEXT New data regarding the diagnosis and treatment of male infertility have emerged and led to an update of the European Association of Urology (EAU) guidelines for Male Infertility. OBJECTIVE To review the new EAU guidelines for Male Infertility. EVIDENCE ACQUISITION A comprehensive work-up of the literature obtained from Medline, the Cochrane Central Register of Systematic Reviews, and reference lists in publications and review articles was developed and screened by a group of urologists and andrologists appointed by the EAU Guidelines Committee. Previous recommendations based on the older literature on this subject were taken into account. Levels of evidence and grade of guideline recommendations were added, modified from the Oxford Centre for Evidence-based Medicine Levels of Evidence. EVIDENCE SUMMARY These EAU guidelines are a short comprehensive overview of the updated guidelines of male infertility as recently published by the EAU (http://www.uroweb.org/guidelines/online-guidelines/), and they are also available in the National Guideline Clearinghouse (http://www.guideline.gov/).
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Rogenhofer N, Dürl S, Ochsenkühn R, Neusser M, Aichinger E, Thaler CJ, Müller S. Case report: elevated sperm aneuploidy levels in an infertile Robertsonian translocation t(21;21) carrier with possible interchromosomal effect. J Assist Reprod Genet 2012; 29:343-6. [PMID: 22318294 DOI: 10.1007/s10815-012-9720-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 01/26/2012] [Indexed: 11/25/2022] Open
Affiliation(s)
- N Rogenhofer
- Division of Gynecological Endocrinology and Reproductive Medicine, Department of Gynecology and Obstetrics, Großhadern, Ludwig-Maximilians University, Munich, Germany.
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Singh K, Raman R. Y-haplotypes and idiopathic male infertility in an Indian population. INDIAN JOURNAL OF HUMAN GENETICS 2011; 15:19-22. [PMID: 20407645 PMCID: PMC2846564 DOI: 10.4103/0971-6866.50865] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Infertility being a multifactorial disorder, both genetic and environmental factors contribute to the etiology of infertile phenotype. Chromosomal anomalies and Y-microdeletion are the established genetic risk factors of male infertility. Y-haplotypes has been found as risk factor for male infertility in certain populations, though in certain others no association has been reported, suggesting a population-specific association of these variations with male infertility. In a case-control study, 165 azoo-/oligospermic patients and 200 controls were haplotyped for certain Y-haplogroups for a possible association with idiopathic male infertility in an Indian population. Analysed Y-haplogroups showed no association with infertile phenotype. Thus this genetic factor is not a risk for infertility in the studied Indian population but that does not rule out the possibility of any of them, to be a risk in other populations.
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Affiliation(s)
- Kiran Singh
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, India
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Mateos Blanco J, Rodríguez SS, Velasco MG, López RR, Bravo CD. Prevalencia de cariotipos patológicos en varones infértiles extremeños. Rev Int Androl 2011. [DOI: 10.1016/s1698-031x(11)70019-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ludwig M, Ludwig A. Genetische Risiken der assistierten Reproduktion. MED GENET-BERLIN 2011. [DOI: 10.1007/s11825-011-0273-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Zusammenfassung
Kinderwunschpatienten müssen vor einer Behandlung über die genetischen Risiken individuell beraten werden. Chromosomenanomalien sind für etwa 5% der männlichen Subfertilität verantwortlich. Im Fall einer Azoospermie liegt die Rate bei 15%. Daher sollte bei einer männlichen Subfertilität bei einer Spermienzahl <20 Mio./ml eine Chromosomenanalyse bei beiden Partnern durchgeführt werden, da ein erhöhtes Risiko für genetische Veränderungen besteht. Ein Klinefelter-Syndrom oder eine Robertson-Translokation können für eine männliche Subfertilität verantwortlich sein. Mutationen des CFTR-Gens sowie Veränderungen des Y-Chromosoms findet man gehäuft bei männlicher Subertiltät. Mikrodeletionen treten am häufigsten am langen Arm des Y-Chromosoms auf (Yq) und betreffen Gene, die direkt in die Spermatogenese involviert sind, insbesondere das AZF-Gen.
Bezüglich Schwangerschaftsverlauf und neonatalem Outcome der Kinder müssen Kinderwunschpatienten darüber aufgeklärt werden, dass während der Schwangerschaft und der Geburt häufiger Komplikationen auftreten als nach Spontankonzeption. Das Fehlgeburtsrisiko ist um das 1,3-Fache erhöht, dies ist jedoch vermutlich Folge der Subfertilität sowie weiterer Risikofaktoren, die die Paare mitbringen, und nicht Folge der Therapie. Das Risiko für Schwangerschaftskomplikationen wie Präeklampsie, Wachstumsretardierung und Totgeburt ist ebenfalls erhöht. Zudem ist das Fehlbildungsrisiko sowohl bei der IVF-Therapie als auch bei der ICSI-Therapie um das 1,3-Fache erhöht.
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Affiliation(s)
- M. Ludwig
- Aff1_273 amedes, Zentrum für Endokrinologie, Kinderwunsch und Pränatale Medizin Mönckebergstr. 10 (Barkhof) 20095 Hamburg Deutschland
| | - A.K. Ludwig
- Aff1_273 amedes, Zentrum für Endokrinologie, Kinderwunsch und Pränatale Medizin Mönckebergstr. 10 (Barkhof) 20095 Hamburg Deutschland
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Rosenbusch B. Somatic chromosomal abnormalities in couples undergoing infertility treatment by intracytoplasmic sperm injection. J Genet 2010; 89:105-8. [PMID: 20505254 DOI: 10.1007/s12041-010-0002-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Bernd Rosenbusch
- Department of Gynaecology and Obstetrics, University of Ulm, Prittwitzstrasse 43, 89075 Ulm, Germany.
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Ross C, Morriss A, Khairy M, Khalaf Y, Braude P, Coomarasamy A, El-Toukhy T. A systematic review of the effect of oral antioxidants on male infertility. Reprod Biomed Online 2010; 20:711-23. [DOI: 10.1016/j.rbmo.2010.03.008] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2009] [Revised: 12/09/2009] [Accepted: 02/04/2010] [Indexed: 12/25/2022]
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Lin PY, Lin YM. Genetic Diagnosis in Male Infertility. UROLOGICAL SCIENCE 2010. [DOI: 10.1016/s1879-5226(10)60016-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Ge SQ, Kang XJ, Duan F. [The genetic and epigenetic defect from the sperm for intracytoplasmic sperm injection (ICSI)]. YI CHUAN = HEREDITAS 2010; 32:289-94. [PMID: 20423882 DOI: 10.3724/sp.j.1005.2010.00289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) can be applied to treat male infertility patients of oligospermia, asthenospermia, teratospermia, azoospermia and failure of the common in-vitro fertilization (IVF), which may overcome the sperm deficiency and even obtain sperms directly from percutaneous epididymal sperm aspiration (PESA) and testicular sperm extraction (TESE). As for direct injection of a single sperm into an egg, the ICSI disobeys the biological laws of natural insemination, thus leading to high genetic and epigenetic risk for patients owing to genetic and epigenetic defect of sperm. By reviewing the genetic and epigenetic defects of ICSI sperm, as well as related diseases, this article aims at understanding of the risks resulting from the genetic and epigenetic defects of ICSI sperm at a molecular mechanism level. The results show that the quality control of ICSI sperm via detecting its epigenetic factors, such as methylated DNA and acetylated histone, is essential for reducing the genetic and epigenetic risk from ICSI.
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Affiliation(s)
- Shao-Qin Ge
- Hebei University Health Science Center, Baoding 071000, China.
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McLachlan RI, O'Bryan MK. Clinical Review#: State of the art for genetic testing of infertile men. J Clin Endocrinol Metab 2010; 95:1013-24. [PMID: 20089613 DOI: 10.1210/jc.2009-1925] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) now provides fertility in many cases of severe idiopathic spermatogenic failure and obstructive azoospermia. Genetic causes must be sought by systematic evaluation of infertile men and affected couples informed about the implications of such diagnoses for assisted reproductive technology outcome and their potential offspring. This review discusses established and emerging genetic disorders related to fertility practice. Chromosomal anomalies are found in about 7% men with idiopathic spermatogenic failure, predominantly numerical/structural in azoospermic men and translocations/inversions in oligospermic men. Routine karyotyping of men with sperm densities less than 10 million/ml, even in the absence of other clinical presentations, is recommended because infertility is associated with higher rates of aneuploidy in ejaculated or testicular sperm and increased chromosomal defects in ICSI offspring. The long arm of the Y chromosome microdeletions are the most common recognized genetic cause of infertility and are found in about 4% men with sperm densities less than 5 million/ml. Routine testing using strict quality assurance procedures is recommended. Azoospermia factor (AZF)-c deletions, the most common form of the long arm of the Y chromosome microdeletions, are usually associated with low levels of sperm in the ejaculate or in testis biopsies, whereas men with AZFa or AZFb+c deletions usually produce no testicular sperm. When AZF-deleted sperm are available and used for ICSI, fertility defects in male offspring seem inevitable. Bilateral congenital absence of the vas is associated with heterozygosity for cystic fibrosis transmembrane receptor mutations making routine gene screening and genetic counseling of the couple essential. Testing for less common genetic associations/defects linked with different reproductive dysfunction may be applicable to specific patients but have not entered routine practice.
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Affiliation(s)
- Robert I McLachlan
- Prince Henry's Institute of Medical Research, P.O. Box 5152, Clayton 3168, Australia.
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O'Flynn O'Brien KL, Varghese AC, Agarwal A. The genetic causes of male factor infertility: a review. Fertil Steril 2010; 93:1-12. [PMID: 20103481 DOI: 10.1016/j.fertnstert.2009.10.045] [Citation(s) in RCA: 280] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 10/27/2009] [Accepted: 10/27/2009] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To illustrate the necessity for an enhanced understanding of the genetic basis of male factor infertility, to present a comprehensive synopsis of these genetic elements, and to review techniques being utilized to produce new insights in fertility research. BACKGROUND Male factor infertility is a complex disorder that affects a large sector of the population; however, many of its etiologies are unknown. By elucidating the underlying genetic basis of infertile phenotypes, it may be possible to discover the causes of infertility and determine effective treatments for patients. METHOD(S) The PubMed database was consulted for the most relevant papers published in the last 3 years pertaining to male factor infertility using the keywords "genetics" and "male infertility." RESULT(S) Advances have been made in the characterization of the roles of specific genes, but further research is necessary before these results can be used as guidelines for diagnosing and treating male factor infertility. The accurate transmission of epigenetic information also has considerable influence on fertility in males and on the fertility of their offspring. CONCLUSION(S) Analysis of the genetic factors that impact male factor infertility will provide valuable insights into the creation of targeted treatments for patients and the determination of the causes of idiopathic infertility. Novel technologies that analyze the influence of genetics from a global perspective may lead to further developments in the understanding of the etiology of male factor infertility through the identification of specific infertile phenotype signatures.
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Affiliation(s)
- Katherine L O'Flynn O'Brien
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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Woldringh GH, Besselink DE, Tillema AHJ, Hendriks JCM, Kremer JAM. Karyotyping, congenital anomalies and follow-up of children after intracytoplasmic sperm injection with non-ejaculated sperm: a systematic review. Hum Reprod Update 2010; 16:12-9. [PMID: 19700489 DOI: 10.1093/humupd/dmp030] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND For men with azoospermia, it is possible to father their own progeny by intracytoplasmic sperm injection (ICSI) with epididymal or testicular sperm. Some studies show that children born after assisted reproductive technology (ART) are at increased risk of birth defects, other studies suggest that there is no extra concern about ICSI children conceived with epididymal or testicular sperm. METHODS Studies about the karyotypes of fetuses, congenital anomalies and the follow-up of the children born after ICSI with non-ejaculated sperm were identified by means of a systematic literature search. RESULTS Eight relevant studies were identified; two studies reported karyotype, five reported malformations and one reported follow-up of children after ICSI. In total, there were 55 out of 1973 (2.8%) abnormal karyotypes in the ICSI with ejaculated sperm group, 0 out of 31 in the ICSI with epididymal sperm group and 5 out of 191 (2.6%) in the ICSI with testicular sperm group. Major malformations were found in 543 out of 12 377 (4.4%) in the ICSI with ejaculated sperm group, 17 out of 533 (3.2%) in the ICSI with epididymal sperm group and 31 out of 670 (4.6%) in the ICSI with testicular sperm group. CONCLUSIONS Although there were no statistical differences, the study groups were small and heterogenic, with a number of potential biases. We therefore recommend a standardized methodology of follow-up studies after ART, with well-defined groups of ICSI with ejaculated sperm, ICSI with epididymal sperm and ICSI with testicular sperm, and a control group of naturally conceived children.
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Affiliation(s)
- G H Woldringh
- Department of Obstetrics and Gynaecology, Radboud University Nijmegen Medical Centre, The Netherlands.
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Profound teratospermia does not influence sex chromosomal aneuploidy rate in in vitro fertilization–preimplantation genetic diagnosis cycles. Fertil Steril 2010; 93:666-8. [DOI: 10.1016/j.fertnstert.2009.07.1006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 07/10/2009] [Accepted: 07/15/2009] [Indexed: 11/18/2022]
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Genetic considerations related to intracytoplasmic sperm injection (ICSI). Fertil Steril 2008; 90:S182-4. [PMID: 19007624 DOI: 10.1016/j.fertnstert.2008.08.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Accepted: 07/28/2006] [Indexed: 10/21/2022]
Abstract
This Committee Opinion outlines the genetic factors related to this procedure.
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Abstract
Chromosome anomalies are extraordinarily common in human gametes, with approximately 21% of oocytes and 9% of spermatozoa abnormal. The types of abnormalities are quite different since most abnormal oocytes are aneuploid, whereas the majority of abnormalities in spermatozoa are structural. Chromosomes 21 and 22 (the smallest chromosomes) are over-represented in aneuploid gametes in both oocytes and sperm. Chromosome 16 is also frequently observed in aneuploid oocytes, whereas the sex chromosomes are particularly predisposed to non-disjunction in human sperm. Maternal age is clearly the most significant factor in the aetiology of aneuploidy; theories about the cause of the maternal age effect are discussed. Paternal age does not have a dramatic effect on the frequency of aneuploid sperm; there is some evidence for a modest increase in the frequency of sex chromosomal aneuploidy. Meiotic recombination has a significant effect on the genesis of aneuploidy in both females and males. New techniques, which allow the analysis of recombination along the synaptonemal complex, have yielded interesting new information in healthy and infertile individuals. There is a link between infertility and the genesis of chromosome abnormalities. Future studies will unravel more of the underlying causal factors.
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Affiliation(s)
- Renée H Martin
- University of Calgary, Department of Medical Genetics, 3330 Hospital Drive NW, Calgary, Alberta, Canada T2N 4N1.
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41
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Georgiou I, Pardalidis N, Giannakis D, Saito M, Watanabe T, Tsounapi P, Loutradis D, Kanakas N, Karagiannis A, Baltogiannis D, Giotitsas N, Miyagawa I, Sofikitis N. In vitro spermatogenesis as a method to bypass pre-meiotic or post-meiotic barriers blocking the spermatogenetic process: genetic and epigenetic implications in assisted reproductive technology. Andrologia 2007; 39:159-76. [PMID: 17714214 DOI: 10.1111/j.1439-0272.2007.00778.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Pregnancies achieved by assisted reproduction technologies and particularly by ooplasmic injections of either in vivo or in vitro generated immature male germ cells are susceptible to genetic risks inherent to the male population treated with assisted reproduction and additional risks inherent to these innovative procedures. The documented, as well as the theoretical risks, are discussed in this review. These risks represent mainly the consequences of genetic abnormalities underlying male infertility and may become stimulators for the development of novel approaches and applications in the treatment of infertility. Recent data suggest that techniques employed for in vitro spermatogenesis, male somatic cell haploidization, stem cell differentiation in vitro and assisted reproductive technology may also affect the epigenetic characteristics of the male gamete, the female gamete, or may have an impact on early embryogenesis. They may be also associated with an increased risk for genomic imprinting abnormalities. Production of haploid male gametes in vitro may not allow the male gamete to undergo all the genetic and epigenetic alterations that the male gamete normally undergoes during in vivo spermatogenesis.
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Affiliation(s)
- I Georgiou
- Laboratory of Molecular Urology and Genetics of Human Reproduction, Department of Urology, Ioannina University School of Medicine, Ioannina, Greece
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42
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Allen VM, Wilson RD, Cheung A. Pregnancy outcomes after assisted reproductive technology. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2007; 28:220-233. [PMID: 16650361 DOI: 10.1016/s1701-2163(16)32112-0] [Citation(s) in RCA: 183] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To review the effect of assisted reproductive technology (ART) on perinatal outcomes, to provide guidelines to optimize obstetrical management and counselling of Canadian women using ART, and to identify areas specific to birth outcomes and ART requiring further research. OPTIONS Perinatal outcomes of ART pregnancies in subfertile women are compared with those of spontaneously conceived pregnancies. Perinatal outcomes are compared between different types of ART. OUTCOMES This guideline discusses the adverse outcomes that have been recorded in association with ART, including obstetrical complications, adverse perinatal outcomes, multiple gestations, structural congenital abnormalities, chromosomal abnormalities, imprinting disorders, and childhood cancer. EVIDENCE The Cochrane Library and MEDLINE were searched for English-language articles from 1990 to February 2005, relating to assisted reproduction and perinatal outcomes. Search terms included assisted reproduction, assisted reproductive technology, ovulation induction, intracytoplasmic sperm injection (ICSI), embryo transfer, and in vitro fertilization (IVF). Additional publications were identified from the bibliographies of these articles as well as the Science Citation Index. Studies assessing gamete intrafallopian transfer (GIFT) and zygote intrafallopian transfer (ZIFT) were excluded since they are rarely used in Canada. All study types were reviewed. Randomized controlled trials were considered evidence of the highest quality, followed by cohort studies. Key studies and supporting data for each recommendation are summarized with evaluative comments and referenced. VALUES The evidence collected was reviewed by the Genetics Committee and the Reproductive Endocrinology Infertility Committee of the Society of Obstetricians and Gynaecologists of Canada (SOGC) and quantified using the Evaluation of Evidence Guidelines developed by the Canadian Task Force on the Periodic Health Examination. BENEFITS, HARMS, AND COSTS The type and magnitude of benefits, harms, and costs expected for patients from guideline implementation. This guideline has been reviewed by the Genetics Committee and the Reproductive Endocrinology and Infertility Committee, and approved by the Executive and Council of the Society of Obstetricians and Gynaecologists of Canada and the Board of the Canadian Fertility and Andrology Society. RECOMMENDATIONS 1. Spontaneous pregnancies in untreated infertile women may be at higher risk for obstetrical complications and perinatal mortality than spontaneous pregnancies in fertile women. Further research is required to clarify the contribution of infertility itself to adverse obstetrical and perinatal outcomes. (II-2A) 2. All men with severe oligozoospermia or azoospermia should be offered genetic/clinical counselling for informed consent and offered karyotyping for chromosomal abnormalities before attempting IVF-ICSI. They should be made aware of the availability of tests for Y chromosome microdeletion. Some patients may consider the option of donor insemination. (II-3B) 3. Couples exploring IVF-ICSI when the man has obstructive azoospermia should be offered genetic/clinical counselling for informed consent and offered genetic testing for alterations in genes associated with cystic fibrosis (CF) before attempting IVF-ICSI. (II-2A) 4. Pregnancies achieved by ovarian stimulation with gonadotropins and intrauterine insemination are at higher risk for perinatal complications, and close surveillance during pregnancy should be considered. It remains unclear if these increased risks are attributable to the underlying infertility, characteristics of the infertile couple, or use of assisted reproductive techniques. Multiple gestations remain a significant risk of gonadotropin treatment. (II-2A) 5. Pregnancies achieved by IVF with or without ICSI are at higher risk for obstetrical and perinatal complications than spontaneous pregnancies, and close surveillance during pregnancy should be considered. It remains unclear if these increased risks are attributable to the underlying infertility, characteristics of the infertile couple, or use of assisted reproductive techniques. (II-2A) 6. Women undergoing ART should be informed about the increased rate of obstetrical interventions such as induced labour and elective Caesarean delivery. (II-2A) 7. Couples suffering from infertility who are exploring treatment options should be made aware of the psychosocial implications of ART. Further research into the psychosocial impact of ART is needed. (II-2A) 8. Singleton pregnancies achieved by assisted reproduction are at higher risk than spontaneous pregnancies for adverse perinatal outcomes, including perinatal mortality, preterm delivery, and low birth weight, and close surveillance during pregnancy should be available as needed. (II-2A) 9. A significant risk of ART is multiple pregnancies. Infertile couples need to be informed of the increased risks of multifetal pregnancies. Although dichorionic twins are most common, the incidence of monochorionic twins is also increased. Risks of multiple pregnancies include higher rates of perinatal mortality, preterm birth, low birth weight, gestational hypertension, placental abruption, and placenta previa. Perinatal mortality in assisted conception twin pregnancies appears to be lower than in spontaneously conceived twin pregnancies. (II-2A) 10. When multifetal reduction is being considered for high-order multiple pregnancies, psychosocial counselling should be readily available. Careful surveillance for fetal growth problems should be undertaken after multifetal reduction. (II-2A) 11. To reduce the risks of multiple pregnancies associated with ART and to optimize pregnancy rates, national guidelines should be developed on the number of embryos replaced according to characteristics such as patient's age and grade of embryos. (II-2A) 12. Further epidemiologic and basic science research is needed to help determine the etiology and extent of the increased risks to childhood and long-term growth and development associated with ART. (II-2A) 13. Discussion of options for prenatal screening for congenital structural abnormalities in pregnancies achieved by ART is recommended, including appropriate use of biochemical and sonographic screening. (II-2A) 14. Further epidemiologic and basic science research is needed to help determine the etiology and extent of the increased risks of congenital abnormalities associated with ART. (II-2A) 15. Couples considering IVF-ICSI for male-factor infertility should receive information, and if necessary formal genetic counselling, about the increased risk of de novo chromosomal abnormalities (mainly sex chromosomal anomalies) associated with their condition. Prenatal diagnosis by chorionic villus sampling (CVS) or amniocentesis should be offered to these couples if they conceive. (II-2A) 16. Further epidemiologic and basic science research is needed to help determine the etiology and extent of the increased risks of chromosomal abnormalities associated with ART. (II-2A) 17. Discussion of options for prenatal screening and testing for aneuploidy in pregnancies achieved by ART, adapted for maternal age and number of fetuses, is recommended, including appropriate use of biochemical and sonographic screening. (II-2A) 18. The precise risks of imprinting and childhood cancer from ART remain unclear but cannot be ignored. Further clinical research, including long-term follow-up, is urgently required to evaluate the prevalence of imprinting disorders and cancers associated with ART. (II-2A) 19. The clinical application of preimplantation genetic diagnosis must balance the benefits of avoiding disease transmission with the medical risks and financial burden of in vitro fertilization. Further ethical discussion and clinical research is required to evaluate appropriate indications for preimplantation genetic diagnosis. (III-B).
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Reddy UM, Wapner RJ, Rebar RW, Tasca RJ. Infertility, assisted reproductive technology, and adverse pregnancy outcomes: executive summary of a National Institute of Child Health and Human Development workshop. Obstet Gynecol 2007; 109:967-77. [PMID: 17400861 DOI: 10.1097/01.aog.0000259316.04136.30] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The National Institute of Child Health and Human Development held a workshop on September 12-13, 2005, to summarize the risks for adverse pregnancy outcomes after assisted reproductive technology (ART), develop an approach to counseling couples regarding these risks, and establish a research agenda. Although the majority of ART children are normal, there are concerns about the increased risk for adverse pregnancy outcomes. More than 30% of ART pregnancies are twins or higher-order multiple gestations (triplets or greater) and more than one half of all ART neonates are the products of multifetal gestations, with an attendant increase in prematurity complications. Assisted reproductive technology singleton pregnancies also demonstrate increased rates of perinatal complications-small for gestational age infants, preterm delivery, and perinatal mortality-as well as maternal complications, such as preeclampsia, gestational diabetes, placenta previa, placental abruption, and cesarean delivery. Although it is not possible to separate ART-related risks from those secondary to the underlying reproductive pathology, the overall increased frequency of obstetric complications, including preterm birth and small for gestational age neonates, should be discussed with the couple. Significant gaps in knowledge were identified, and the basic science and clinical and epidemiologic research required to address these gaps is outlined.
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Affiliation(s)
- Uma M Reddy
- Pregnancy and Perinatology Branch, National Institute of Child Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland 20892-7510, USA.
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Hwang SH, Lee SM, Seo EJ, Choi KU, Park HJ, Park NC, Choi J, Lee EY. A Case of Male Infertility with a Reciprocal Translocation t(X;14)(p11.4;p12). Ann Lab Med 2007; 27:139-42. [DOI: 10.3343/kjlm.2007.27.2.139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Sang-Hyun Hwang
- Department of Laboratory Medicine, School of Medicine Pusan National University, Busan, Korea
| | - Sun-Min Lee
- Department of Laboratory Medicine, School of Medicine Pusan National University, Busan, Korea
| | - Eul Ju Seo
- Department of Laboratory Medicine, Asan Medical Center and University of Ulsan College of Medicine, Seoul, Korea
| | - Kyung Un Choi
- Department of Pathology, School of Medicine Pusan National University, Busan, Korea
| | - Hyun Jun Park
- Department of Urology, School of Medicine Pusan National University, Busan, Korea
| | - Nam Cheol Park
- Department of Urology, School of Medicine Pusan National University, Busan, Korea
| | - Jin Choi
- Department of Urology, School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Eun-Yup Lee
- Department of Laboratory Medicine, School of Medicine Pusan National University, Busan, Korea
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45
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Abstract
The diagnosis of male infertility requires methodical approach which is primarily clinical, aimed at identifying all potential factors. Biological and radiological assessments allow diagnosis confirmation, and evaluation of both prognosis and therapeutic strategy.
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Affiliation(s)
- J Schlosser
- Service d'urologie et d'andrologie, hôpital Robert Debré, avenue du Général-Koenig, 51092 Reims cedex, France.
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46
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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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47
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Genetic considerations related to intracytoplasmic sperm injection (ICSI). Fertil Steril 2006; 86:S103-5. [PMID: 17055799 DOI: 10.1016/j.fertnstert.2006.07.1489] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Revised: 07/28/2006] [Accepted: 07/28/2006] [Indexed: 10/24/2022]
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48
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Martin RH. Meiotic chromosome abnormalities in human spermatogenesis. Reprod Toxicol 2006; 22:142-7. [PMID: 16714098 DOI: 10.1016/j.reprotox.2006.03.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Revised: 03/13/2006] [Accepted: 03/20/2006] [Indexed: 10/24/2022]
Abstract
The last few years have witnessed an explosion in the information about chromosome abnormalities in human sperm and the meiotic events that predispose to these abnormalities. We have determined that all chromosomes are susceptible to nondisjunction, but chromosomes 21 and 22 and, especially, the sex chromosomes have an increased frequency of aneuploidy. Studies are just beginning on the effects of potential mutagens on the chromosomal constitution of human sperm. The effects of pesticides and cancer therapeutic agents have been reviewed. In the last decade, there has been a great impetus to study chromosome abnormalities in sperm from infertile men because the advent of intracytoplasmic sperm injection (ICSI) made it possible for these men to father pregnancies. A large number of studies have demonstrated that infertile men have an increased frequency of chromosomally abnormal sperm and children, even when they have a normal somatic karyotype. Meiotic studies on the pachytene stage of spermatogenesis have demonstrated that infertile men have impaired chromosome synapsis, a significantly decreased frequency of recombination, and an increased frequency of chromosomes completely lacking a recombination site. Such errors make these cells susceptible to meiotic arrest and the production of aneuploid gametes.
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Affiliation(s)
- Renée H Martin
- Department of Medical Genetics, University of Calgary, Calgary, Alta., Canada.
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49
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Jalón Monzón A, Martín Benito J, Álvarez Múgica M, García Rodríguez J, Fernández Gómez J, Viña Alonso L, Jalón Monzón M. Infertilidad masculina. Semergen 2006. [DOI: 10.1016/s1138-3593(06)73261-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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50
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Kayed HF, Mansour RT, Aboulghar MA, Serour GI, Amer AE, Abdrazik A. Screening for chromosomal abnormalities in 2650 infertile couples undergoing ICSI. Reprod Biomed Online 2006; 12:359-70. [PMID: 16569327 DOI: 10.1016/s1472-6483(10)61010-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Chromosomal abnormalities are the major contributor to the genetic risks of infertility treatment associated with intracytoplasmic sperm injection (ICSI). The study objective was to assess prospectively the frequency of chromosomal aberrations in couples undergoing ICSI. A total of 2650 infertile couples (5300 patients) underwent chromosome analysis before undergoing ICSI in the Egyptian IVF-ET Centre. Heparinized blood samples were cultured, harvested and banded according to standard methods. Overall, 96.94% of the patients studied (5138/5300) had a normal karyotype, while the remaining 162 patients (3.06%) had an abnormal karyotype. Male patients constituted the majority of abnormalities; 138 males (85.19%) and 24 females (14.81%). These chromosomal aberrations included 117 cases (2.2%) of sex chromosome abnormalities; 113 males and four females. Forty-five patients (0.85%) had autosomal aberrations; 25 of them were males and 20 were females. The current data show that chromosomal abnormalities affect 3.06% of infertile patients, and occur in both sexes, but more predominantly in males undergoing ICSI for male factor infertility. It is recommended that chromosomal analysis be performed before undergoing ICSI, to identify patients who can be offered preimplantation genetic diagnosis.
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Affiliation(s)
- Hesham F Kayed
- The Egyptian IVF-ET centre, 3 Street 161 Hadaek El-Maadi, Maadi, Cairo 11431, Egypt.
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