1
|
Liu Q, Zhou WJ, Huang ZH, Huang XH, Wu J, Ji XR, Luo XF, Tang YL, Wang RJ, Fan LQ, Huang C, Zhu WB. Exploring the impact of pericentric inversion of chromosome 9 on fertility in sperm donors. Asian J Androl 2024; 26:00129336-990000000-00153. [PMID: 38227552 PMCID: PMC11156446 DOI: 10.4103/aja202369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 11/03/2023] [Indexed: 01/18/2024] Open
Abstract
ABSTRACT Pericentric inversion of chromosome 9 (inv[9]) is a common chromosomal structural variant, but its impact on clinical outcomes remains debated. The screening criteria of sperm banks are rarely mentioned to individuals with inv(9). In this study, we evaluated the fertility of sperm donors with inv(9) who met eligibility criteria for sperm banks (inv[9]-eligible donors). From March 2004 to May 2022, chromosomal analysis of 16 124 sperm donors at CITIC-Xiangya Human Sperm Bank in Hunan Province (Changsha, China) found that 251 (1.6%) had chromosome variations, with inv(9) being the most prevalent at 1.1%. All 169 inv(9)-eligible donors were contacted to collect fertility outcome data, along with 206 eligible donors without inv(9) as controls. In addition, semen samples from inv(9)-eligible donors and eligible donors underwent assessments of sperm fluorescence in situ hybridization (FISH), mitochondrial membrane potential, DNA fragmentation index, acrosome integrity, reactive oxygen species (ROS), and sperm morphology. Results showed that inv(9) did not significantly increase reproductive risks overall. Despite detecting ROS level differences, the clinical impact may be insignificant. This study provides new data on the inv(9) population that can serve as a valuable reference for decision-making by sperm banks as well as for genetic counseling and clinical guidance for individuals carrying inv(9) variant.
Collapse
Affiliation(s)
- Qian Liu
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
| | - Wen-Jun Zhou
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
| | - Zeng-Hui Huang
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Xiu-Hai Huang
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Jian Wu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Xi-Ren Ji
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Xue-Feng Luo
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
| | - Yu-Ling Tang
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
| | - Rui-Jun Wang
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
| | - Li-Qing Fan
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Chuan Huang
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| | - Wen-Bing Zhu
- Institute of Reproductive and Stem Cell Engineering, Basic Medicine College, Central South University, Changsha 410013, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha 410005, China
| |
Collapse
|
2
|
Izadi M, Khalili MA, Rezvani ME, Anbari F, Maleki B, Woodward B, Aflatoonian B. Sperm Selection Using Zona Pellucida-Binding Enhanced Embryo Morphokinetic and Clinical Outcomes in ICSI: A Sibling Oocytes Study. Am J Mens Health 2024; 18:15579883241228236. [PMID: 38279800 PMCID: PMC10822090 DOI: 10.1177/15579883241228236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 01/29/2024] Open
Abstract
The objective was to investigate the embryo morphokinitics using a time-lapse monitoring (TLM) system and assessment of clinical outcomes following intracytoplasmic sperm injection (ICSI) with zona pellucida (ZP)-bound sperm selection and conventional methods. A total of 371 metaphase II (MII) oocytes from 50 ICSI cycles were studied. Sibling oocytes were randomly divided into control (n = 199) and ZP-bound group (n = 172). All resulting zygotes were cultured and monitored in the TLM system up to Day 3 after ICSI. Fertilization rate, early embryo development, and clinical outcomes were evaluated. No significant differences were found in fertilization rate, time-lapse qualitative and quantitative measures, pronuclear fading time (PNF) t2, t3, t4, t5, t6, and t7 (times of cleavage to 2, 3, 4, 5, 6, and 7 cells), respectively. However, the t8 (time of cleavage to eight cells) and cc3 (duration of third cell cycle) revealed a significant difference between control and ZP-bound groups (p < .05). A significant difference between the two groups (p < .05) in the rates of Grade A embryos (according to Basile algorithm), chemical pregnancy, clinical pregnancy, and implantation was observed. Sperm selection using biological materials, such as ZP, improved both embryo quality and pregnancy outcomes, despite not affecting the early embryo development and morphokinetic parameters up to t8. This prospective randomized sibling oocyte trial was registered in October 2020 to January 2022 (IRCT20200705048021N1).
Collapse
Affiliation(s)
- Mahin Izadi
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Ali Khalili
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Ebrahim Rezvani
- Department of Physiology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Fatemeh Anbari
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Behnam Maleki
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Infertility Center, Department of Obstetrics and Gynecology, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Behrouz Aflatoonian
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| |
Collapse
|
3
|
García-Molina A, Navarro N, Valverde A, Bompart D, Caldeira C, Vendrell A, Soler C. Human kinematic and morphometric sperm subpopulation analysis using CASA technology: A new approach to spermatozoa classification. Rev Int Androl 2022; 20:257-265. [DOI: 10.1016/j.androl.2021.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/12/2021] [Accepted: 05/24/2021] [Indexed: 11/30/2022]
|
4
|
Foot NJ, Gonzalez MB, Gembus K, Fonseka P, Sandow JJ, Nguyen TT, Tran D, Webb AI, Mathivanan S, Robker RL, Kumar S. Arrdc4-dependent extracellular vesicle biogenesis is required for sperm maturation. J Extracell Vesicles 2021; 10:e12113. [PMID: 34188787 PMCID: PMC8217992 DOI: 10.1002/jev2.12113] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 01/04/2023] Open
Abstract
Extracellular vesicles (EVs) are important players in cell to cell communication in reproductive systems. Notably, EVs have been found and characterized in the male reproductive tract, however, direct functional evidence for their importance in mediating sperm function is lacking. We have previously demonstrated that Arrdc4, a member of the α-arrestin protein family, is involved in extracellular vesicle biogenesis and release. Here we show that Arrdc4-mediated extracellular vesicle biogenesis is required for proper sperm function. Sperm from Arrdc4-/- mice develop normally through the testis but fail to acquire adequate motility and fertilization capabilities through the epididymis, as observed by reduced motility, premature acrosome reaction, reduction in zona pellucida binding and two-cell embryo production. We found a significant reduction in extracellular vesicle production by Arrdc4-/- epididymal epithelial cells, and further, supplementation of Arrdc4-/- sperm with additional vesicles dampened the acrosome reaction defect and restored zona pellucida binding. These results indicate that Arrdc4 is important for proper sperm maturation through the control of extracellular vesicle biogenesis.
Collapse
Affiliation(s)
- Natalie J. Foot
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth AustraliaAustralia
- School of MedicineRobinson Research InstituteUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Macarena B. Gonzalez
- School of MedicineRobinson Research InstituteUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Kelly Gembus
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth AustraliaAustralia
| | - Pamali Fonseka
- Department of Biochemistry and GeneticsLa Trobe Institute for Molecular SciencesLa Trobe UniversityMelbourneVictoriaAustralia
| | - Jarrod J. Sandow
- Advanced Technology and Biology DivisionWalter and Eliza Hall InstituteParkvilleVictoriaAustralia
- Department of Medical BiologyUniversity of MelbourneParkvilleVICAustralia
| | - Thuy Tien Nguyen
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth AustraliaAustralia
- School of Biological SciencesUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Diana Tran
- School of Chemical Engineering & Advanced MaterialsUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Andrew I. Webb
- Advanced Technology and Biology DivisionWalter and Eliza Hall InstituteParkvilleVictoriaAustralia
- Department of Medical BiologyUniversity of MelbourneParkvilleVICAustralia
| | - Suresh Mathivanan
- Department of Biochemistry and GeneticsLa Trobe Institute for Molecular SciencesLa Trobe UniversityMelbourneVictoriaAustralia
| | - Rebecca L. Robker
- School of MedicineRobinson Research InstituteUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Department of Anatomy and Developmental BiologyBiomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
| | - Sharad Kumar
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth AustraliaAustralia
- Faculty of Health and Medical SciencesUniversity of AdelaideAdelaideSouth AustraliaAustralia
| |
Collapse
|
5
|
Martins AD, Agarwal A, Baskaran S, Pushparaj PN, Ahmad G, Panner Selvam MK. Alterations of Spermatozoa Proteomic Profile in Men with Hodgkin's Disease Prior to Cancer Therapy. World J Mens Health 2019; 38:521-534. [PMID: 31385466 PMCID: PMC7502316 DOI: 10.5534/wjmh.190012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/01/2019] [Accepted: 05/13/2019] [Indexed: 12/14/2022] Open
Abstract
Purpose Hodgkin's disease (HD) is a type of cancer affecting men in the reproductive age with potential consequences on their fertility status. This study aims to analyze sperm parameters, alterations in proteomic profiles and validate selected protein biomarkers of spermatozoa in men with HD undergoing sperm banking before cancer therapy. Materials and Methods Semen analysis was carried out in healthy fertile donors (control, n=42), and patients diagnosed with HD (patients, n=38) before cancer therapy. We compared proteomic profiles of spermatozoa from donors (n=3) and patients (n=3) using LTQ-Orbitrap Elite hybrid MS system. Results A total of 1,169 proteins were identified by global proteomic in both groups. The ingenuity pathway analysis revealed that differentially expressed proteins involved in capacitation, acrosome reaction, binding of sperm to the zona pellucida, sperm motility, regulation of sperm DNA damage, and apoptosis were significantly downregulated in HD patients. Validation of proteins implicated in sperm fertility potential by Western Blot demonstrated that peroxiredoxin 2 (PRDX 2) was underexpressed (p=0.015), and transferrin (p=0.045) and SERPIN A5 (p=0.010) protein levels were overexpressed in spermatozoa of men with HD. Conclusions Findings of this study indicates that the key proteins involved in sperm fertility potential are significantly altered in men with HD, which provides substantial explanation for the observed low sperm quality in HD subjects prior to cancer therapy. Furthermore, our results suggest PRDX 2, transferrin and SERPIN A5 as possible candidate proteins for assessing sperm quality in HD patients prior to cancer therapy.
Collapse
Affiliation(s)
- Ana D Martins
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA.,Department of Microscopy, Laboratory of Cell Biology, Institute of Biomedical Sciences Abel Salazar and Unit for Multidisciplinary Research in Biomedicine, University of Porto, Porto, Portugal
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA.
| | - Saradha Baskaran
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Peter Natesan Pushparaj
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Gulfam Ahmad
- Discipline of Pathology, School of Medical Sciences, Sydney University, Sydney, Australia
| | | |
Collapse
|
6
|
Pacey A. Is sperm DNA fragmentation a useful test that identifies a treatable cause of male infertility? Best Pract Res Clin Obstet Gynaecol 2018; 53:11-19. [PMID: 30482660 DOI: 10.1016/j.bpobgyn.2018.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/25/2018] [Indexed: 12/25/2022]
Abstract
The present-day laboratory methods of sperm analysis are a poor predictor of reproductive outcome, and for many years it has been clear that newer and better tests are required. Although many such tests have been proposed, only those which determine sperm DNA quality are still being considered. Of these, several tests of sperm DNA fragmentation are available, although there is presently no consensus about the most appropriate test, the best test specimen (fresh or washed sperm) or what level of fragmentation is of clinical concern. Moreover, although several strategies have been proposed to reduce DNA fragmentation, there is no universal approach and few randomised trials have tested these in a clinical context. As such, most professional bodies do not presently support the use of sperm DNA fragmentation tests, and it is clear that large randomised trials are still required to further evaluate their clinical effectiveness.
Collapse
Affiliation(s)
- Allan Pacey
- Department of Oncology and Metabolism, University of Sheffield, Level 4, The Jessop Wing, Tree Root Walk, Sheffield, S10 2SF, United Kingdom.
| |
Collapse
|
7
|
Clinical assessment of the male fertility. Obstet Gynecol Sci 2018; 61:179-191. [PMID: 29564308 PMCID: PMC5854897 DOI: 10.5468/ogs.2018.61.2.179] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/06/2017] [Accepted: 09/26/2017] [Indexed: 02/08/2023] Open
Abstract
The evaluation of infertility in males consists of physical examination and semen analyses. Standardized semen analyses depend on the descriptive analysis of sperm motility, morphology, and concentration, with a threshold level that must be surpassed to be considered a fertile spermatozoon. Nonetheless, these conventional parameters are not satisfactory for clinicians since 25% of infertility cases worldwide remain unexplained. Therefore, newer tests methods have been established to investigate sperm physiology and functions by monitoring characteristics such as motility, capacitation, the acrosome reaction, reactive oxygen species, sperm DNA damage, chromatin structure, zona pellucida binding, and sperm-oocyte fusion. After the introduction of intracytoplasmic sperm injection technique, sperm maturity, morphology, and aneuploidy conditions have gotten more attention for investigating unexplained male infertility. In the present article, recent advancements in research regarding the utilization of male fertility prediction tests and their role and accuracy are reviewed.
Collapse
|
8
|
Rehfeld A, Egeberg DL, Almstrup K, Petersen JH, Dissing S, Skakkebæk NE. EDC IMPACT: Chemical UV filters can affect human sperm function in a progesterone-like manner. Endocr Connect 2018; 7:16-25. [PMID: 28874401 PMCID: PMC5744631 DOI: 10.1530/ec-17-0156] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/05/2017] [Indexed: 12/20/2022]
Abstract
Human sperm cell function must be precisely regulated to achieve natural fertilization. Progesterone released by the cumulus cells surrounding the egg induces a Ca2+ influx into human sperm cells via the CatSper Ca2+-channel and thereby controls sperm function. Multiple chemical UV filters have been shown to induce a Ca2+ influx through CatSper, thus mimicking the effect of progesterone on Ca2+ signaling. We hypothesized that these UV filters could also mimic the effect of progesterone on sperm function. We examined 29 UV filters allowed in sunscreens in the US and/or EU for their ability to affect acrosome reaction, penetration, hyperactivation and viability in human sperm cells. We found that, similar to progesterone, the UV filters 4-MBC, 3-BC, Meradimate, Octisalate, BCSA, HMS and OD-PABA induced acrosome reaction and 3-BC increased sperm penetration into a viscous medium. The capacity of the UV filters to induce acrosome reaction and increase sperm penetration was positively associated with the ability of the UV filters to induce a Ca2+ influx. None of the UV filters induced significant changes in the proportion of hyperactivated cells. In conclusion, chemical UV filters that mimic the effect of progesterone on Ca2+ signaling in human sperm cells can similarly mimic the effect of progesterone on acrosome reaction and sperm penetration. Human exposure to these chemical UV filters may impair fertility by interfering with sperm function, e.g. through induction of premature acrosome reaction. Further studies are needed to confirm the results in vivo.
Collapse
Affiliation(s)
- A Rehfeld
- Department of Growth and ReproductionCopenhagen University Hospital, Rigshospitalet, Denmark
- Department of Cellular and Molecular MedicineFaculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC)University of Copenhagen, Rigshospitalet, Denmark
| | - D L Egeberg
- Department of Growth and ReproductionCopenhagen University Hospital, Rigshospitalet, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC)University of Copenhagen, Rigshospitalet, Denmark
| | - K Almstrup
- Department of Growth and ReproductionCopenhagen University Hospital, Rigshospitalet, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC)University of Copenhagen, Rigshospitalet, Denmark
| | - J H Petersen
- Department of Growth and ReproductionCopenhagen University Hospital, Rigshospitalet, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC)University of Copenhagen, Rigshospitalet, Denmark
- Department of BiostatisticsUniversity of Copenhagen, Copenhagen, Denmark
| | - S Dissing
- Department of Cellular and Molecular MedicineFaculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - N E Skakkebæk
- Department of Growth and ReproductionCopenhagen University Hospital, Rigshospitalet, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC)University of Copenhagen, Rigshospitalet, Denmark
| |
Collapse
|
9
|
Mashiko D, Ikawa M, Fujimoto K. Mouse spermatozoa with higher fertilization rates have thinner nuclei. PeerJ 2017; 5:e3913. [PMID: 29038763 PMCID: PMC5641427 DOI: 10.7717/peerj.3913] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/21/2017] [Indexed: 11/20/2022] Open
Abstract
Background Although spermatozoa with normal morphology are assumed to have uniform fertilization ability, recent data show that even normal spermatozoa have considerable variation in their head shape which is associated with differences in fertilization ability. Appropriate quantitative indicators for good sperm morphology, however, remain unidentified. Methods Therefore, in an effort to identify such an indicator, we compared the nuclear contour of normal mouse spermatozoa by quantitative multivariate analysis using elliptic Fourier descriptors combined with principal component analysis. The spermatozoa were obtained from different strains and collection sites which have been shown to be associated with different fertilization abilities. Results We found that the head was 5.7% thinner in spermatozoa from the B6D2F1 (BDF1) strain, known to have a higher fertilization rate, than in those from the C57BL/6N (B6N) strain, which has a lower fertilization rate. Moreover, zona-penetrated spermatozoa in the perivitelline space consistently had 5.4% thinner heads than those isolated from the epididymis before ejaculation. The aspect ratio, which represents the sperm head thinness, uniquely distinguished these sperm populations, confirming its validity as a morphological indicator. Discussion Because aspect ratio has also been shown to characterize human spermatozoa, this unique morphometric indicator might be applicable to compare normal spermatozoa among multiple patients, which will greatly facilitate and enhance current reproductive technologies.
Collapse
Affiliation(s)
- Daisuke Mashiko
- Department of Biological Sciences, Osaka University, Toyonaka, Osaka, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Koichi Fujimoto
- Department of Biological Sciences, Osaka University, Toyonaka, Osaka, Japan
| |
Collapse
|
10
|
Li R, Luo X, Li L, Peng Q, Yang Y, Zhao L, Ma M, Hou Z. The Protective Effects of Melatonin Against Oxidative Stress and Inflammation Induced by Acute Cadmium Exposure in Mice Testis. Biol Trace Elem Res 2016. [PMID: 26224376 DOI: 10.1007/s12011-015-0449-6] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cadmium (Cd) is widely used in daily life and was recently recognized as a possible source of human toxicity due to its ability to accumulate in organs. Previous studies have shown that Cd exposure may cause testicular toxicity through oxidative stress and an inflammatory effect. Melatonin has been demonstrated to be an effective anti-oxidant and has an anti-inflammatory effect. The aim of the present study was to investigate the toxicological effects of Cd on reproduction in male mice and the potential protective action of melatonin against these adverse effects. Adult male mice were injected intraperitoneally with Cd at a dose of 2 mg/kg body weight per day for seven consecutive days with or without melatonin pretreatment. Sex organ weight, sperm parameters including sperm quality, apoptosis, acrosome integrity, mitochondrial membrane potential, testicular morphology, serum sex hormone, inflammatory status, and oxidative stress were evaluated. The results showed that significant adverse effects were observed in the male reproductive system after Cd exposure, including alterations in sperm parameters, increased DNA damage, and sex hormone disturbance. Acute Cd exposure also significantly increased malondialdehyde (MDA) contents, decreased glutathione (GSH) and superoxide dismutase (SOD) activities, and upregulated levels of the pro-inflammatory cytokines, tumor necrosis factor-alpha (TNF-α), and interleukin-1beta (IL-1β), in the testis. In contrast, melatonin pretreatment significantly alleviated these toxic effects, and its mechanism may involve inhibiting MDA level, restoring GSH and SOD activities, and reducing the upregulation of TNF-α and IL-1β. Our data suggest that oxidative stress and inflammation are involved in Cd-induced toxicity in the male reproductive system and that co-administration of melatonin exerts a protective effect against Cd-induced male reproductive toxicity.
Collapse
Affiliation(s)
- Renyan Li
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China
| | - Xue Luo
- Institute of Tropical Medicine, Third Military Medical University, Chongqing, 400038, People's Republic of China
| | - Lianbing Li
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China
| | - Qiang Peng
- Beibei District of Chongqing Municipal Public Security Bureau of Interpol Detachment, Chongqing, 400700, People's Republic of China
| | - Yuyou Yang
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China
| | - Letian Zhao
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China
| | - Mingfu Ma
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China.
| | - Zhiwei Hou
- Chongqing Institute of Population and Family Planning, Key Laboratory of Birth Defects and Reproductive Health, Chongqing, 400020, People's Republic of China.
| |
Collapse
|
11
|
Kwasnik A, Tonry C, Ardle AM, Butt AQ, Inzitari R, Pennington SR. Proteomes, Their Compositions and Their Sources. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 919:3-21. [DOI: 10.1007/978-3-319-41448-5_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
12
|
Korean red ginseng protects against doxorubicin-induced testicular damage: An experimental study in rats. J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
13
|
Wang HX, Li HC, Lv MQ, Zhou DX, Bai LZ, Du LZ, Xue X, Lin P, Qiu SD. Associations between occupation exposure to Formaldehyde and semen quality, a primary study. Sci Rep 2015; 5:15874. [PMID: 26515386 PMCID: PMC4626826 DOI: 10.1038/srep15874] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 10/02/2015] [Indexed: 11/09/2022] Open
Abstract
Formaldehyde (FA), a ubiquitous environmental pollutant, has long been suspected of having male reproductive toxicity. However, FA male reproductive toxicity was inconclusive due to dearth of human studies. Therefore, we sought to investigate whether occupational exposure to FA affects semen quality. Semen quality including five conventional parameters and seven kinematics parameters were compared between 114 male workers occupationally exposed to FA and 76 referents. FA exposure index (FEI) was measured and calculated. Our results showed that sperm progressive motility, total sperm motility, VCL, VSL and VAP were statistically significant decreased in FA exposure workers compared with the referents. Moreover, FEI was significantly negative associated with sperm progressive motility (β = -0.19, P = 0.01) and total sperm motility (β = -0.23, P = 0.004). In addition, a significant elevated risk of abnormal sperm progressive motility were observed in both low- (OR = 2.58; 95% CI: 1.11-5.97) and high-FA-exposed group (OR = 3.41; 95% CI: 1.45-7.92) respectively. Furthermore, a significant increased risk was also estimated for abnormal total sperm motility in both low- (OR = 3.21; 95% CI: 1.24-8.28) and high-FA-exposed group (OR = 4.84; 95% CI: 1.83-12.81) respectively. In conclusion, our study revealed the adverse effects of FA occupation exposure on semen quality, especially on sperm motion parameters.
Collapse
Affiliation(s)
- Hai-xu Wang
- Department of Pathology, School of basic medical sciences, Health science center, Xi'an Jiaotong University, Xi'an, 710061, China.,Reproductive Medicine Center, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China.,Reproductive Medical Center, Department of Obstetrics and Gynecology, Xijing Hospital of the Fourth Military Medical University, Xi'an, 710032, China
| | - He-cheng Li
- Reproductive Medicine Center, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China.,Department of Urinary Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Mo-qi Lv
- Department of Pathology, School of basic medical sciences, Health science center, Xi'an Jiaotong University, Xi'an, 710061, China.,Reproductive Medicine Center, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Dang-xia Zhou
- Department of Pathology, School of basic medical sciences, Health science center, Xi'an Jiaotong University, Xi'an, 710061, China.,Reproductive Medicine Center, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Li-zhi Bai
- Department of Pathology, School of basic medical sciences, Health science center, Xi'an Jiaotong University, Xi'an, 710061, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Liang-zhi Du
- Department of Pathology, School of basic medical sciences, Health science center, Xi'an Jiaotong University, Xi'an, 710061, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Xia Xue
- Reproductive Medicine Center, Maternal and child care Hospital of Shaanxi Province, Xi'an, 710003, China
| | - Pu Lin
- Electric Power Science Research Institute of Shaanxi Province, Xi'an, 710054, China
| | - Shu-dong Qiu
- Reproductive Medicine Center, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China
| |
Collapse
|
14
|
Oehninger S, Franken DR, Ombelet W. Sperm functional tests. Fertil Steril 2014; 102:1528-33. [DOI: 10.1016/j.fertnstert.2014.09.044] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 09/27/2014] [Accepted: 09/30/2014] [Indexed: 11/16/2022]
|
15
|
Oliveira BM, Arruda RP, Thomé HE, Maturana Filho M, Oliveira G, Guimarães C, Nichi M, Silva LA, Celeghini ECC. Fertility and uterine hemodynamic in cows after artificial insemination with semen assessed by fluorescent probes. Theriogenology 2014; 82:767-72. [PMID: 25023296 DOI: 10.1016/j.theriogenology.2014.06.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 06/09/2014] [Accepted: 06/10/2014] [Indexed: 10/25/2022]
Abstract
Fluorescent probes (propidium iodide, Hoechst 33342, fluorescein isothiocyanate-conjugated Pisum sativum agglutinin, and 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolcarbocyanine iodide) were used to simultaneously evaluate the integrity of plasma and acrosomal membranes as well as mitochondrial membrane function in cryopreserved bovine semen and to verify its influence on fertility and postinsemination uterine vascularization. One hundred eighty-two Nellore cows were distributed for artificial insemination (AI) using semen batches separated according to the cell percentage presenting intact plasma membrane, intact acrosome, and high mitochondrial function (IPIAH): group G (44.5% IPIAH, n = 68), group M (23.0% IPIAH, n = 56), and group R (8.5% IPIAH, n = 58). The uterine hemodynamic was evaluated by Doppler sonogram in three periods: 30 hours before AI, 4 and 24 hours after AI were considered the resistance index and the uterine vascularization score. The pregnancy rate of group G (64.7%) was greater (P > 0.05) compared with group R (36.2%), but both did not differ from group M (50.0%). There was no effect (P > 0.05) of semen quality on uterine vascularization. Greater vascularization was noticed 4 hours after AI than 30 hours before and 24 hours after AI. Semen evaluation using fluorescent probes contributes to predicting fertilizing potential of semen. The use of semen with less percentage of IPIAH sperm does not alter uterine hemodynamic in cows.
Collapse
Affiliation(s)
- Bruna Marcele Oliveira
- Laboratory of Semen Biotechnology and Andrology, Center of Biotechnology in Animal Reproduction, Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Rubens Paes Arruda
- Laboratory of Semen Biotechnology and Andrology, Center of Biotechnology in Animal Reproduction, Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Helder Esteves Thomé
- Laboratory of Semen Biotechnology and Andrology, Center of Biotechnology in Animal Reproduction, Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Milton Maturana Filho
- Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), São Paulo, Brazil
| | - Guilherme Oliveira
- Laboratory of Semen Biotechnology and Andrology, Center of Biotechnology in Animal Reproduction, Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Carina Guimarães
- Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), São Paulo, Brazil
| | - Marcílio Nichi
- Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), São Paulo, Brazil
| | - Luciano Andrade Silva
- Laboratory of Theriogenology Dr. O. J. Ginther, Department of Veterinary Medicine, FZEA, University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Eneiva Carla Carvalho Celeghini
- Laboratory of Semen Biotechnology and Andrology, Center of Biotechnology in Animal Reproduction, Animal Reproduction Department, College of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), Pirassununga, São Paulo, Brazil.
| |
Collapse
|
16
|
Zhu J, Jin RT, Wu LM, Johansson L, Guo TH, Liu YS, Tong XH. Cryoprotectant-free ultra-rapid freezing of human spermatozoa in cryogenic vials. Andrologia 2013; 46:642-9. [PMID: 23822810 DOI: 10.1111/and.12131] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2013] [Indexed: 12/01/2022] Open
Abstract
The objective of this study was to investigate the effect of ultra-rapid freezing (direct immersion in liquid nitrogen) on human spermatozoa in cryogenic vials (≥0.5 ml) at different concentrations of sucrose. After swim-up, the sperm suspensions (N = 58) were diluted with sperm preparation medium and divided into six aliquots: swim-up (fresh), conventional freezing group (slow freezing) and four ultra-rapid freezing groups containing sucrose at different concentrations (0.15 m, 0.20 m, 0.25 m and 0.30 m). Sperm motility, progressive motility, plasma membrane integrity, DNA stability and acrosome integrity of fresh and cooled-warmed spermatozoa were analysed. The progressive motility, plasma membrane and acrosome integrity of spermatozoa in the 0.20 m sucrose group were significantly higher than those of the slow freezing group (47.5 ± 6.8% versus 36.4 ± 8.7%, 73.2 ± 6.9% versus 63.9 ± 6.3%, 53.7 ± 10.0% versus 35.9 ± 9.7% respectively, P < 0.05). However, no differences were found in sperm motility or DNA stability (58.5 ± 6.3% versus 54.2 ± 5.3%, 90.1 ± 2.8% versus 87.2 ± 4.7%, P > 0.05 respectively) between the 0.20 m sucrose and the slow freezing group. No differences were found between the ultra-rapid and slow freezing group at the other concentrations of sucrose. Our findings suggest that the method of ultra-rapid freezing of human spermatozoa in cryogenic vials with a solution containing 0.20 m sucrose results in recovery of spermatozoon of superior qualities. In contrast to slow freezing, the ultra-rapid freezing technique of human spermatozoa seems to reduce cryoinjuries and maintain important physiological characteristics of the spermatozoa after warming.
Collapse
Affiliation(s)
- J Zhu
- Reproductive Medical Centre of Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
| | | | | | | | | | | | | |
Collapse
|
17
|
Fen CTC, Lee SN, Lim MN, Yu SL. Relationship between Sperm Hyaluronan-Binding Assay (HBA) Scores on Embryo Development, Fertilisation, and Pregnancy Rate in Patients Undergoing Intra-Cytoplasmic Sperm Injection (ICSI). PROCEEDINGS OF SINGAPORE HEALTHCARE 2013. [DOI: 10.1177/201010581302200207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction: The novel development of the sperm hyaluronan-binding assay (HBA) has now been routinely used in some laboratories worldwide to predict sperm maturity and functionality. Hence, the purpose of this study is to evaluate if embryo development, quality, fertilisation and pregnancy rates are affected by low HBA values. Methods: A total of192 female patients who underwent intra-cytoplasmic sperm injection (ICSI) were compared retrospectively in terms of embryo development, fertilisation, and pregnancy rates with their husbands' HBA score. Patients' husbands were required to undergo a HBA test before the start of their stimulation cycle to determine if their semen was suitable to undergo ICSI or in-vitro fertilisation (IVF). P-value < 0.05 was considered significant. Results: Patients were divided into four groups, group A (HBA ≤ 15%), group B (HBA > 15% < 35%), group C (HBA ≥ 35% < 60%), and group D (HBA ≥ 60%). The fertilisation rate for groups A, B, C, and D were 67.9%, 73.1%, 72.5%, and 77.1% respectively. Group D had a fertilisation rate significantly higher than the rest of the groups ( p = 0.016). The pregnancy rate for group D was also significantly higher amongst the four groups ( p = 0.041), whereas the pregnancy rate for groups B and C was similar (42.4% versus 41.1% respectively). Day three cleavage rate (the ability to reach six cells and beyond) was highest for group D compared to the other groups ( p = 0.002). Conclusion: The higher the HBA score, the better the fertilisation, pregnancy, and cleavage rates. This shows that HBA does have the ability to select mature sperms with normal chromosome development and oocyte-binding capability.
Collapse
Affiliation(s)
- Carine To Chiou Fen
- Centre for Assisted Reproduction, Department of Obstetrics and Gynaecology, Singapore General Hospital, Singapore
| | - Shaw Ni Lee
- Centre for Assisted Reproduction, Department of Obstetrics and Gynaecology, Singapore General Hospital, Singapore
| | - Mui Nee Lim
- Centre for Assisted Reproduction, Department of Obstetrics and Gynaecology, Singapore General Hospital, Singapore
| | - Su Ling Yu
- Centre for Assisted Reproduction, Department of Obstetrics and Gynaecology, Singapore General Hospital, Singapore
| |
Collapse
|
18
|
Pimenta J, Sardinha J, Marques CC, Domingos A, Baptista MC, Barbas JP, Martins IC, Mesquita P, Pessa P, Soares R, Viegas A, Cabrita E, Horta EMA, Fontes CA, Prates AMJ, Pereira MLNR. Inhibition of ovine in vitro fertilization by anti-Prt antibody: hypothetical model for Prt/ZP interaction. Reprod Biol Endocrinol 2013; 11:25. [PMID: 23531155 PMCID: PMC3617107 DOI: 10.1186/1477-7827-11-25] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 03/18/2013] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND The impact of prion proteins in the rules that dictate biological reproduction is still poorly understood. Likewise, the role of prnt gene, encoding the prion-like protein testis specific (Prt), in ram reproductive physiology remains largely unknown. In this study, we assessed the effect of Prt in ovine fertilization by using an anti-Prt antibody (APPA) in fertilization medium incubated with spermatozoa and oocytes. Moreover, a computational model was constructed to infer how the results obtained could be related to a hypothetical role for Prt in sperm-zona pellucida (ZP) binding. METHODS Mature ovine oocytes were transferred to fertilization medium alone (control) or supplemented with APPA, or pre-immune serum (CSerum). Oocytes were inseminated with ovine spermatozoa and after 18 h, presumptive zygotes (n=142) were fixed to evaluate fertilization rates or transferred (n=374) for embryo culture until D6-7. Predicted ovine Prt tertiary structure was compared with data obtained by circular dichroism spectroscopy (CD) and a protein-protein computational docking model was estimated for a hypothetical Prt/ZP interaction. RESULTS The fertilizing rate was lower (P=0.006) in APPA group (46.0+/-6.79%) when compared to control (78.5+/-7.47%) and CSerum (64.5+/-6.65%) groups. In addition, the cleavage rate was higher (P<0.0001) in control (44.1+/-4.15%) than in APPA group (19.7+/-4.22%). Prt CD spectroscopy showed a 22% alpha-helical structure in 30% (m/v) aqueous trifluoroethanol (TFE) and 17% alpha in 0.6% (m/v) TFE. The predominant alpha-helical secondary structure detected correlates with the predicted three dimensional structure for ovine Prt, which was subsequently used to test Prt/ZP docking. Computational analyses predicted a favorable Prt-binding activity towards ZP domains. CONCLUSIONS Our data indicates that the presence of APPA reduces the number of fertilized oocytes and of cleaved embryos. Moreover, the CD analysis data reinforces the predicted ovine Prt trend towards an alpha-helical structure. Predicted protein-protein docking suggests a possible interaction between Prt and ZP, thus supporting an important role for Prt in ovine fertilization.
Collapse
MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Circular Dichroism
- Egg Proteins/chemistry
- Egg Proteins/genetics
- Egg Proteins/metabolism
- Embryo, Mammalian/drug effects
- Embryo, Mammalian/embryology
- Embryo, Mammalian/metabolism
- Female
- Fertilization in Vitro/drug effects
- Male
- Membrane Glycoproteins/chemistry
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Models, Molecular
- Molecular Sequence Data
- Prions/chemistry
- Prions/immunology
- Prions/metabolism
- Protein Binding
- Protein Conformation/drug effects
- Protein Structure, Secondary/drug effects
- Protein Structure, Tertiary
- Receptors, Cell Surface/chemistry
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Sequence Homology, Amino Acid
- Sheep
- Sperm-Ovum Interactions/drug effects
- Time Factors
- Trifluoroethanol/chemistry
- Trifluoroethanol/pharmacology
- Zona Pellucida/metabolism
- Zona Pellucida Glycoproteins
Collapse
Affiliation(s)
- Jorge Pimenta
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisbon, Portugal
| | - João Sardinha
- REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Carla C Marques
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
| | - Ana Domingos
- IHMT-CMDT – Instituto de Higiene e Medicina Tropical, Centro de Malária e Doenças Tropicais, Lisbon, Portugal
| | - Maria C Baptista
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
| | - João P Barbas
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
| | - Ivo C Martins
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, 1649-028, Portugal
| | - Patrícia Mesquita
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
| | - Pedro Pessa
- Hospital Universitário de Coimbra, Coimbra, Portugal
| | - Rui Soares
- REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Aldino Viegas
- REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Eurico Cabrita
- REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - EM António Horta
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
| | - Carlos A Fontes
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisbon, Portugal
| | - AM José Prates
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisbon, Portugal
| | - MLN Rosa Pereira
- Unidade de Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária Santarém, Quinta da Fonte Boa, Vale de Santarém, 2005-048, Portugal
- Escola Universitária Vasco da Gama, Coimbra, Portugal
| |
Collapse
|
19
|
Liu DY, Liu ML. Clinical value of sperm DNA damage should be assessed in motile sperm fraction rather than whole ejaculated sperm. Fertil Steril 2013; 99:367-71. [DOI: 10.1016/j.fertnstert.2012.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 08/26/2012] [Accepted: 10/02/2012] [Indexed: 10/27/2022]
|
20
|
Liu F, Zhu Y, Liu Y, Wang X, Ping P, Zhu X, Hu H, Li Z, He L. Real-time Raman microspectroscopy scanning of the single live sperm bound to human zona pellucida. Fertil Steril 2012; 99:684-689.e4. [PMID: 23148927 DOI: 10.1016/j.fertnstert.2012.10.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 10/18/2012] [Accepted: 10/21/2012] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To determine if Raman microspectroscopy (RMS) can distinguish sperm bound to the human zona pellucida (ZP) from those unbound sperm. DESIGN Paired experiments to compare Raman scanning features of ZP-bound and unbound sperm. SETTING Public hospital-based clinical assisted reproduction center. PATIENT(S) Sperm samples from ten fertile donors were used in this study. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Sperm-ZP binding, ZP-induced acrosome reaction, and scanning intensity of various regions of sperm. RESULT(S) The RMS found two slightly low-intensity regions (800-900 and 3,200-4,000 cm(-1)) shifted to high-intensity grade at the acrosome region of the ZP-bound sperm compared with unbound sperm. Moreover, principal component analysis and statistical analysis showed that the RMS can distinguish the ZP-bound sperm from the unbound sperm. CONCLUSION(S) RMS scanning of single live sperm could be used to distinguish ZP-bound sperm from unbound sperm. Thus, RMS may be a useful tool to detect normal functional sperm and to select sperm for intracytoplasmic sperm injection.
Collapse
Affiliation(s)
- Feng Liu
- Department of Urology, Renji Hospital, Shanghai Human Sperm Bank, Sperm Development and Genetics Laboratory, Shanghai Institute of Andrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Tavalaee M, Deemeh MR, Arbabian M, Kiyani A, Nasr-Esfahani MH. Relationship between fertilization rate and early apoptosis in sperm population of infertile individuals. Andrologia 2012; 46:36-41. [PMID: 23134226 DOI: 10.1111/and.12038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2012] [Indexed: 11/26/2022] Open
Abstract
Integrity of the sperm membrane, of which phosphatidyl serine (PS) plays a central role, is essential for fertilization. The externalisation of PS (EPS) occurs during capacitation and the acrosome reaction. EPS, from the inner to the outer membrane, is considered as a sign of early apoptosis. Therefore, EPS may have a dual function in sperm. This study has evaluated the relationship between EPS and fertilization, embryo quality and pregnancy outcomes in couples who were candidates for ICSI. Semen samples were collected from 43 ICSI candidates and assessed according to World Health Organization guidelines for semen parameters. EPS was assessed by Annexin V and propidium iodide (PI) staining. Protamine deficiency was assessed by chromomycin A3 (CMA3) staining. A significant positive correlation was observed between the percentages of fertilization and annexin-positive PI-negative (An(+)PI(-)) sperm. There was a significant negative correlation between the percentages of protamine-deficient sperm with the percentage of fertilization. In addition, the percentage of An(+)PI(-) sperm in individuals with fertilization rates higher and lower than 50% significantly differed. The percentage of annexin-positive PI-positive (An(+)PI(+)) sperm in semen of the partners of pregnant women significantly differed from the partners of nonpregnant women. In conclusion, if An(+)PI(-) is a sign of capacitation and An(+)PI(+) is a sign of apoptosis, the results suggest that semen samples with a higher ability to undergo capacitation have a higher chance to result in successful fertilization post-ICSI. The presence of a high percentage of apoptotic sperm in the insemination sample before capacitation may reduce the chances of pregnancy.
Collapse
Affiliation(s)
- M Tavalaee
- Department of Reproduction and Development, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - M R Deemeh
- Department of Reproduction and Development, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran
| | - M Arbabian
- Department of Reproduction and Development, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - A Kiyani
- Department of Reproduction and Development, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - M H Nasr-Esfahani
- Department of Reproduction and Development, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran.,Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| |
Collapse
|
22
|
Manochantr S, Chiamchanya C, Sobhon P. Relationship between chromatin condensation, DNA integrity and quality of ejaculated spermatozoa from infertile men. Andrologia 2012; 44:187-99. [PMID: 21729131 DOI: 10.1111/j.1439-0272.2010.01128.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Normal chromatin condensation is important for sperm fertilising ability. However, routine semen analysis does not identify defects in sperm chromatin structure. This study aimed to investigate the condensation of chromatin and DNA integrity in spermatozoa of infertile men and deduce the relationship with sperm quality, as measured by conventional semen parameters. Semen analysis was carried out to assess sperm quality according to World Health Organization criteria. The remaining aliquot of each sample was processed for transmission electron microscopy, chromomycin A3 (CMA3) and terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) assays. The ultrastructural analysis of spermatozoa from infertile men showed heterogeneity in sperm nuclear morphology. Some spermatozoa displayed a round nucleus with incomplete chromatin condensation. Immunoreactivity with antitransitional protein and antiprotamine antibodies indicated nuclear maturation defects in the spermatozoa of infertile men. Spearman's correlation analysis indicated a positive correlation between the percentages of CMA3- and TUNEL-positive spermatozoa. In addition, these two parameters were negatively correlated with sperm concentration, motility and normal morphology. This study demonstrated that men with morphologically normal spermatozoa of <30% have greater degree of protamine deficiency and DNA damage than men with morphologically normal spermatozoa of >30%. Evaluation of chromatin integrity appears to be a useful tool for assessing male fertility.
Collapse
Affiliation(s)
- S Manochantr
- Division of Cell Biology, Department of Preclinical Sciences, Faculty of Medicine, Thammasat University, Pathumthani, Thailand.
| | | | | |
Collapse
|
23
|
Caille AM, Berta CL, Cuasnicú PS, Munuce MJ. Peritoneal fluid modifies the response of human spermatozoa to follicular fluid. Reprod Biomed Online 2012; 24:466-73. [DOI: 10.1016/j.rbmo.2011.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 12/14/2011] [Accepted: 12/22/2011] [Indexed: 01/10/2023]
|
24
|
Franken DR, Oehninger S. Semen analysis and sperm function testing. Asian J Androl 2011; 14:6-13. [PMID: 22179512 DOI: 10.1038/aja.2011.58] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Despite controversy regarding the clinical value of semen analysis, male fertility investigation still relies on a standardized analysis of the semen parameters. This is especially true for infertility clinics in both developing and developed countries. Other optional tests or sophisticated technologies have not been widely applied. The current review addresses important changes in the analysis of semen as described in the new World Health Organization (WHO) manual for semen analysis. The most important change in the manual is the use of evidence-based publications as references to determine cutoff values for normality. Apart from the above mentioned changes, the initial evaluation and handling methods remain, in most instances, the same as in previous editions. Furthermore, the review evaluates the importance of quality control in andrology with emphasis on the evaluation of sperm morphology. WHO sperm morphology training programmes for Sub-Saharan countries were initiated at Tygerberg Hospital in 1995. The external quality control programme has ensured that the majority of participants have maintained their morphological reading skills acquired during initial training. This review reports on current sperm functional tests, such as the induced acrosome reaction, and sperm-zona pellucida binding assays, as well as the impact of sperm quality in terms of DNA integrity, and the relationship of sperm function tests to sperm morphology.
Collapse
Affiliation(s)
- Daniel R Franken
- Department of Obstetrics and Gynaecology, Tygerberg Hospita, Cape Town, South Africa.
| | | |
Collapse
|
25
|
Abu Hassan Abu D, Franken DR, Hoffman B, Henkel R. Accurate sperm morphology assessment predicts sperm function. Andrologia 2011; 44 Suppl 1:571-7. [PMID: 22040054 DOI: 10.1111/j.1439-0272.2011.01229.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Sperm morphology has been associated with in vitro as well as in vivo fertilisation. The study aimed to evaluate the possible relation between the percentage of spermatozoa with normal morphology and the following sperm functional assays: (i) zona-induced acrosome reaction (ZIAR); (ii) DNA integrity; (iii) chromatin condensation; (iv) sperm apoptosis; and (v) fertilisation rates. Regression analysis was employed to calculate the association between morphology and different functional tests. Normal sperm morphology correlated significantly with the percentages of live acrosome-reacted spermatozoa in the ZIAR (r = 0.518; P < 0.0001; n = 92), DNA integrity (r = -0.515; P = 0.0018; n = 34), CMA(3) -positive spermatozoa (r = -0.745; P < 0.0001; n = 92), sperm apoptosis (r = -0.395; P = 0.0206; n = 34) and necrosis (r = -0.545; P = 0.0009; n = 34). Negative correlations existed between for the acrosome reaction, and DNA integrity, while negative associations were recorded with the percentages of CMA(3) -positive spermatozoa, apoptotic and necrotic spermatozoa. Sperm morphology is related to sperm dysfunction such as poor chromatin condensation, acrosome reaction and DNA integrity. Negative and significant correlations existed between normal sperm morphology and chromatin condensation, the percentage of spermatozoa with abnormal DNA and spermatozoa with apoptotic activity. The authors do not regard sperm morphology as the only test for the diagnosis of male fertility, but sperm morphology can serve as a valuable indicator of underlying dysfunction.
Collapse
|
26
|
JOUANNET PIERRE, WANG CHRISTINA, EUSTACHE FLORENCE, KOLD-JENSEN TINA, AUGER JACQUES. Semen quality and male reproductive health: the controversy about human sperm concentration decline. APMIS 2011. [DOI: 10.1111/j.1600-0463.2001.tb05801.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
27
|
Could using the zona pellucida bound sperm for intracytoplasmic sperm injection (ICSI) enhance the outcome of ICSI? Asian J Androl 2011; 13:197-8. [PMID: 21240292 DOI: 10.1038/aja.2010.179] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
|
28
|
Liu F, Qiu Y, Zou Y, Deng ZH, Yang H, Liu DY. Use of zona pellucida-bound sperm for intracytoplasmic sperm injection produces higher embryo quality and implantation than conventional intracytoplasmic sperm injection. Fertil Steril 2010; 95:815-8. [PMID: 20971463 DOI: 10.1016/j.fertnstert.2010.09.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 08/25/2010] [Accepted: 09/14/2010] [Indexed: 11/26/2022]
Abstract
This goal of this study was to compare the outcomes of conventional intracytoplasmic sperm injection (ICSI; control group, n = 53 couples) and a modified ICSI technique using zona pellucida (ZP)-bound sperm for injection of oocytes (test group, n = 53 couples). The proportion of high-quality embryos (grades 1 and 2) and implantation rate were significantly higher in the test group than in the control group, but the difference in fetal heart pregnancy rate was not significant despite seven more pregnancies being obtained in the test group (26 pregnancies) versus the control group (19 pregnancies) following fresh embryo transfers.
Collapse
Affiliation(s)
- Feng Liu
- Reproductive Medical Centre, Third Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China.
| | | | | | | | | | | |
Collapse
|
29
|
Samplaski MK, Agarwal A, Sharma R, Sabanegh E. New generation of diagnostic tests for infertility: Review of specialized semen tests. Int J Urol 2010; 17:839-47. [DOI: 10.1111/j.1442-2042.2010.02619.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
30
|
Relationship between seminal plasma zinc concentration and spermatozoa-zona pellucida binding and the ZP-induced acrosome reaction in subfertile men. Asian J Androl 2009; 11:499-507. [PMID: 19434054 DOI: 10.1038/aja.2009.23] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The aim of this study was to determine the relationship between seminal zinc concentration and spermatozoa-zona pellucida (ZP) binding and the ZP-induced acrosome reaction (ZPIAR) in subfertile men. Semen analyses and seminal zinc concentration assessments were carried out according to the World Health Organization manual for 458 subfertile men. A spermatozoa-ZP interaction test was carried out by incubating 2 x 10(6) motile spermatozoa with a group of four unfertilized oocytes obtained from a clinical in vitro fertilization programme. After 2 h of incubation, the number of spermatozoa bound per ZP and the ZPIAR of ZP-bound spermatozoa were examined. The effect of adding 0.5 mmol L(-1) zinc to the media on the ZPIAR of spermatozoa from normozoospermic men was also tested in vitro. Seminal zinc concentration positively correlated with sperm count and duration of abstinence, but negatively correlated with semen volume. On analysis of data from all participants, both spermatozoa-ZP binding and the ZPIAR were significantly correlated with sperm motility and normal morphology, but not with seminal zinc concentration. However, in men with normozoospermic semen, the seminal zinc concentration was significantly higher in men with defective ZPIAR (< 16%) than in those with normal ZPIAR (>or= 16%) (P < 0.01). The addition of 0.5 mmol L(-1) zinc to the culture media had no effect on spermatozoa-ZP binding, but significantly reduced the ZPIAR in vitro (P < 0.001). In conclusion, seminal zinc concentration is correlated with sperm count and the duration of abstinence in subfertile men. In men with normozoospermic semen, high seminal zinc concentration may have an adverse effect on the ZPIAR.
Collapse
|
31
|
Comparison of cryopreserved human sperm in vapor and liquid phases of liquid nitrogen: effect on motility parameters, morphology, and sperm function. Fertil Steril 2008; 90:1978-82. [DOI: 10.1016/j.fertnstert.2007.09.066] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Revised: 09/29/2007] [Accepted: 09/29/2007] [Indexed: 11/22/2022]
|
32
|
Anel L, Álvarez M, Martínez-Pastor F, Gomes S, Nicolás M, Mata M, Martínez AF, Borragán S, Anel E, de Paz P. Sperm Cryopreservation in Brown Bear (Ursus arctos): Preliminary Aspects. Reprod Domest Anim 2008; 43 Suppl 4:9-17. [DOI: 10.1111/j.1439-0531.2008.01248.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
33
|
Liu DY, Liu ML, Baker HWG. Enhancement of sperm-zona pellucida (ZP) binding capacity by activation of protein kinase A and C pathways in certain infertile men with defective sperm-ZP binding. Hum Reprod 2008; 24:20-7. [PMID: 18784086 DOI: 10.1093/humrep/den334] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Defective sperm-zona pellucida (ZP) binding (DSZPB) is a common cause of failure of fertilization in vitro. This study was to determine if DSZPB is caused by defective pathways upstream of protein kinase A (PKA) and C (PKC), or reduced protein tyrosine phosphorylation (TP). METHODS Infertile men with DSZPB and either normal sperm morphology (NSM) > or = 14% (n = 15) or < or =5% (n = 15) were studied. Sperm-ZP binding test was performed by incubation of motile sperm with oocytes for 2 h with or without dibutyryl cyclic AMP (dbcAMP, PKA activator) or phorbol myristate acetate (PMA, PKC activator). TP of capacitated sperm in medium was assessed by immunofluorescence with an anti-phosphotyrosine monoclonal antibody. RESULTS For normal sperm with normal sperm-ZP binding, both PMA and dbcAMP significantly enhanced sperm-ZP binding in a dose-response manner. Only dbcAMP, but not PMA, significantly increased TP of capacitated sperm. In DSZPB men with severe teratozoospermia (NSM < or = 5%), neither PMA nor dbcAMP enhanced sperm-ZP binding, despite dbcAMP significantly increasing the TP of capacitated sperm for all samples. In contrast, for DSZPB with NSM > or = 14%, PMA caused significantly increased sperm binding up to normal levels (> or =40 sperm bound/ZP) in five men, and dbcAMP had a similar result in two men. Again TP was significantly enhanced only by dbcAMP, but not by PMA. CONCLUSIONS There is defective signalling in pathways upstream of PKC and PKA in some men with DSZPB and normal semen analysis. Stimulation of TP by dbcAMP does not enhance sperm-ZP binding capacity in DSZPB men with low TP, regardless of sperm morphology.
Collapse
Affiliation(s)
- D Y Liu
- Department of Obstetrics and Gynaecology, University of Melbourne, Australia.
| | | | | |
Collapse
|
34
|
Shimizu Y, Minaguchi R, Ishikawa T, Harada T, Yoshiki N, Kubota T. Increase in the concentration of cytosolic-free calcium induced by human follicular fluid was decreased in single human spermatozoon with abnormal morphology. Reprod Med Biol 2008; 7:143-149. [PMID: 29699295 DOI: 10.1111/j.1447-0578.2008.00211.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Aim: The increase in the concentration of cytosolic-free calcium ([Ca2+]i) induced by follicular fluid or progesterone has been reported to promote an acrosome reaction and alternation in several motion parameters in human sperm (hyperactivation). We previously reported that populations of sperm in cell suspension obtained from infertile men with abnormal morphology exhibited lower mean peak progesterone-evoked [Ca2+]i compared with morphologically normal sperm using cell-suspension methods. In the present study, the change in [Ca2+]i in individual normally and abnormally shaped spermatozoa was compared. Methods: The change in [Ca2+]i induced by human follicular fluid in individual spermatozoa with normal and abnormal morphology was compared using the fluorescent calcium-sensitive dye fluo-3/AM. The spatial distribution of the increase in [Ca2+]i in single sperm was also investigated. Results: The [Ca2+]i of normally shaped spermatozoa increased rapidly after the administration of human follicular fluid. The response reached a peak within 2-3 s and then slowly declined to a plateau phase. The baseline and peak fluorescence in spermatozoa with abnormal morphology was lower when compared with normal spermatozoa. The follicular-fluid-induced increase in [Ca2+]i (expressed as a percentage increase in [Ca2+]i over basal) in morphologically abnormal sperm was 39.2 ± 5.3% (n = 107, mean ± standard error), which was smaller than that of morphologically normal sperm (61.6 ± 5.7%, n = 100, P < 0.005) from seven healthy donors. The follicular-fluid-induced [Ca2+]i increases observed in sperm with morphologically abnormal mid-pieces (20.9 ± 4.3%, n = 12, P < 0.05) or tails (40.7 ± 6.0%, n = 92, P < 0.05) were lower than those of morphologically normal spermatozoa (61.6 ± 5.3%, n = 101). The follicular-fluid-induced [Ca2+]i increase of morphologically normal spermatozoa from infertile couples (35.1 ± 6.3%, n = 25, P < 0.05) was also found to be lower than that of morphologically normal spermatozoa from healthy donors. Conclusion: The present study shows that spermatozoa with abnormal morphology in healthy donors have disorders of signal transduction, as do normally shaped sperm in men from infertile couples. (Reprod Med Biol 2008; 7: 143-149).
Collapse
Affiliation(s)
- Yasufumi Shimizu
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Reiko Minaguchi
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomonori Ishikawa
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatsuya Harada
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoyuki Yoshiki
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Toshiro Kubota
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
35
|
Liu DY, Baker HWG. Human sperm bound to the zona pellucida have normal nuclear chromatin as assessed by acridine orange fluorescence. Hum Reprod 2007; 22:1597-602. [PMID: 17369294 DOI: 10.1093/humrep/dem044] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The aim of this study was to determine if only sperm with double stranded DNA could bind to the human zona pellucida (ZP). METHODS Sperm samples from 124 infertile men with a range of semen abnormalities were studied. Oocytes that had failed to fertilize in IVF or ICSI were used for the sperm-ZP binding test. A group of four oocytes were incubated for 2 h with 2 x 10(6)/ml motile sperm selected by colloidal silica gradient centrifugation (CSGC). After assessing the number of sperm bound per ZP, all sperm bound to the surface of the ZP of four oocytes were dislodged and placed on a glass slide. The double (green fluorescence) or single stranded (denatured, red fluorescence) DNA of sperm in semen, motile sperm selected by CSGC and ZP-bound sperm, was assessed by acridine orange (AO) fluorescence. RESULTS The percentage of sperm with green fluorescence was significantly correlated with normal sperm morphology in semen and after CSGC preparation. The proportion of sperm with green fluorescence was significantly higher in motile sperm selected by CSGC than ejaculated sperm. There were very few sperm (average <8%) with red fluorescence bound to the ZP, even in men who had very high (>70%) proportions of sperm with red fluorescence in their semen. CONCLUSION Sperm binding to human ZP is highly selective for double stranded DNA. Sperm with single stranded or denatured DNA bind less or do not bind at all to the ZP, probably because of defects of motility and, more especially, morphology.
Collapse
Affiliation(s)
- D Y Liu
- Department of Obstetrics and Gynaecology, University of Melbourne, Reproductive Services and Melbourne IVF, Royal Women's Hospital, Victoria 3053, Australia.
| | | |
Collapse
|
36
|
Liu DY, Garrett C, Baker HWG. Acrosome-reacted human sperm in insemination medium do not bind to the zona pellucida of human oocytes. ACTA ACUST UNITED AC 2006; 29:475-81. [PMID: 16480409 DOI: 10.1111/j.1365-2605.2006.00681.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the literature there is still confusion whether acrosome-reacted sperm in medium can initiate primary binding to human zona pellucida (ZP). The ability of acrosome-reacted sperm to bind to ZP in vitro can be deduced by measuring the acrosome reaction (AR) of ZP-bound sperm compared with sperm in medium after incubation under different conditions inhibiting the ZP-induced AR. Motile sperm from fertile men, normospermic men and infertile men diagnosed with disordered ZP-induced AR (DZPIAR) were selected by swim-up (2 x 10(6) in 1 mL medium) and incubated for 1-2 h with four oocytes from failed in vitro fertilization (IVF). The acrosome status of sperm was assessed using pisum sativum agglutinin labelled with fluorescein. The ZP-induced AR was inhibited in experiments using sperm from DZPIAR patients, hyper-osmotic medium (400 mOsm/kg) and medium containing soybean trypsin inhibitor (SBTI; 4 mg/mL). Pre-treatment with calcium ionophore was used to create a sperm population with elevated AR. In all experiments with factors inhibiting the ZP-induced AR, the AR was significantly lower for ZP-bound sperm compared with sperm in medium: DZPIAR patients 4% vs. 15%, hyper-osmotic medium 3% vs. 12%, SBTI 2% vs. 12% and SBTI 3% vs. 23% after treatment with calcium ionophore. In conclusion, acrosome-reacted sperm in vitro have significantly reduced, in fact probably zero ability to bind to the ZP.
Collapse
Affiliation(s)
- D Y Liu
- University of Melbourne Department of Obstetrics and Gynaecology, Reproductive Services, Royal Women's Hospital and Melbourne IVF, Vic., Australia.
| | | | | |
Collapse
|
37
|
Liu DY, Clarke GN, Baker HWG. Tyrosine phosphorylation on capacitated human sperm tail detected by immunofluorescence correlates strongly with sperm-zona pellucida (ZP) binding but not with the ZP-induced acrosome reaction. Hum Reprod 2006; 21:1002-8. [PMID: 16428332 DOI: 10.1093/humrep/dei435] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Protein tyrosine phosphorylation (TP) of human sperm is related to sperm capacitation and zona pellucida (ZP) binding. The aim of this study was to determine whether the TP of capacitated sperm is a useful marker for the ability of sperm to bind to the ZP and undergo the ZP-induced acrosome reaction (AR). METHODS Semen samples were obtained from 115 subfertile men with sperm count > or =20 x 10(6)/ml, motility > or =25% and variable morphology. Motile sperm (2 x 10(6)/ml) selected by swim-up were incubated with four oocytes for 2 h, and the number of sperm bound to the ZP and the ZP-induced AR was examined. TP of sperm tail was assessed by immunofluorescence (IF) with anti-phosphotyrosine monoclonal antibody. The time course and effects of dibutyryl cyclic adenosine monophosphate (dbcAMP) and phorbol myristate acetate (PMA) on TP were also studied. RESULTS TP was stimulated more by dbcAMP (P < 0.001) and less by PMA (P < 0.05). TP increased significantly with time of incubation of sperm. TP was not detectable on the surface of unfixed live sperm by either Dynabeads or IF. Sperm TP at 2, 4 and 20 h incubation was all significantly correlated with sperm-ZP binding but not with the ZP-induced AR. CONCLUSION Sperm TP detected by IF correlates strongly with sperm-ZP binding capacity but not with the ZP-induced AR. This simple IF assay of TP may be a clinically useful test of sperm function that is predictive of normal sperm ZP-binding capacity.
Collapse
Affiliation(s)
- D Y Liu
- Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Australia.
| | | | | |
Collapse
|
38
|
Sharma PK, Rehwani H, Rai AK, Gupta RS, Singh YP. Antispermatogenic activity of the benzothiazoline ligand and corresponding organoantimony(V) derivative in male albino rats. Bioinorg Chem Appl 2006; 2006:16895. [PMID: 17496999 PMCID: PMC1686299 DOI: 10.1155/bca/2006/16895] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Revised: 11/27/2005] [Accepted: 01/24/2006] [Indexed: 01/12/2023] Open
Abstract
Triphenylantimony(V) derivative, Ph(3)Sb(OPr(i)) [SC(6)H(4)N : C(CH(3))CH(2)C(O)CH(3)], 1b, and the corresponding benzothiazoline ligand [1, 2], HNC(6)H(4)SC(CH(3))CH(2)C(O)CH(3), 1a, have been tested for their effects on the reproductive system of male albino rats. The oral administration of both 1a and 1b at the dose level of 10 mg/rat/day produced significant reduction in the weights of testes, epididymides, seminal vesicles, and ventral prostate. Significant decrease in sperm motility as well as in sperm density resulted in 100% sterility. Significant (P < .01) alterations were also found in biochemical parameters of reproductive organs in treated male rats as compared to the control group. Production of preleptotene, pachytene, and secondary spermatocytes was decreased by 42%, 43%, 39%, and by 44%, 49%, 55% in the ligand, 1a, and organoantimony(V) derivative, 1b, treated rats, respectively. These results indicate that both compounds 1a and 1b are antispermatogenic in nature and on oral administration in male rats, and finally caused sterility. A comparison indicates that the organoantimony(V) derivative 1b is more effective pertaining to its antispermatogenic activity than the corresponding ligand 1a.
Collapse
Affiliation(s)
- Pankaj K. Sharma
- Department of Chemistry, University of Rajasthan,
Jaipur 302 004, India
| | - H. Rehwani
- Reproduction Physiology Section, Department of
Zoology, University of Rajasthan, Jaipur 302 004, India
| | - A. K. Rai
- Department of Chemistry, University of Rajasthan,
Jaipur 302 004, India
| | - R. S. Gupta
- Reproduction Physiology Section, Department of
Zoology, University of Rajasthan, Jaipur 302 004, India
| | - Y. P. Singh
- Department of Chemistry, University of Rajasthan,
Jaipur 302 004, India
- *Y. P. Singh:
| |
Collapse
|
39
|
Abstract
There is general agreement that intracytoplasmic sperm injection (ICSI) should be used in male factor infertility cases, such as oligoasthenoteratozoospermia, presence of anti-sperm antibodies, or azoospermia, these cases being diagnosed through abnormal semen analysis. There are no randomized clinical trials comparing ICSI with IVF (or other interventions) where semen quality is so poor that IVF would not achieve fertilization. It is accepted that ICSI is the only treatment option in those circumstances. The role of ICSI where IVF can be expected to give a reasonable fertilization rate is the question that needs to be answered. The argument is whether or not ICSI should be used for all cases of infertility. This paper proposes and strongly supports the use of ICSI for all indications. Considerations of fertilization and embryo development, cost effectiveness and safety will be clearly discussed.
Collapse
Affiliation(s)
- Yasser Orief
- Department of Obstetrics and Gynecology, Shatby University Hospital, Alexandria University, Egypt
| | | | | |
Collapse
|
40
|
Liu DY, Garrett C, Baker HWG. Clinical application of sperm-oocyte interaction tests in in vitro fertilization--embryo transfer and intracytoplasmic sperm injection programs. Fertil Steril 2004; 82:1251-63. [PMID: 15533339 DOI: 10.1016/j.fertnstert.2003.10.057] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2003] [Revised: 10/20/2003] [Accepted: 10/20/2003] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To review the clinical value of sperm-oocyte interaction tests for the diagnosis and management of infertility by standard IVF or intracytoplasmic sperm injection (ICSI). DESIGN Review of recent publications on relationships among sperm-oocyte interaction tests, sperm characteristics, and results of IVF and determination of frequency of defective sperm-oocyte interaction in infertile men. MAIN OUTCOME MEASURE(S) Fertilization rates with IVF, sperm characteristics, sperm-zona pellucida (ZP) binding, ZP-induced acrosome reaction (AR), and sperm-ZP penetration. RESULT(S) Sperm defects associated with low sperm-ZP binding or impaired ZP-induced AR and sperm-ZP penetration are the major causes of failure of fertilization when all or most oocytes from a couple do not fertilize in standard IVF. There is a high frequency of defective sperm-ZP interaction in men with oligozoospermia (<20 x 10(6)/mL) and severe teratozoospermia (strict normal sperm morphology < or =5%). Sperm morphology correlates with sperm-ZP binding, and sperm concentration correlates with ZP-induced AR in infertile men with sperm concentrations >20 x 10(6)/mL. Defective ZP-induced AR may cause infertility in up to 25% men with idiopathic infertility. These patients require ICSI despite the normal standard semen analyses. CONCLUSION(S) Sperm-oocyte interaction tests are useful for diagnosis of subtle sperm defects that cause infertility in men without severe abnormalities of semen analysis. Pre-IVF diagnosis of these sperm defects will assist in the clinical assignment of patients to treatment with either standard IVF or ICSI.
Collapse
Affiliation(s)
- De Yi Liu
- Department of Obstetrics and Gynecology and Reproductive Services, The Royal Women's Hospital, University of Melbourne, Melbourne, Victoria, Australia.
| | | | | |
Collapse
|
41
|
Berkovitz A, Eltes F, Yaari S, Katz N, Barr I, Fishman A, Bartoov B. The morphological normalcy of the sperm nucleus and pregnancy rate of intracytoplasmic injection with morphologically selected sperm. Hum Reprod 2004; 20:185-90. [PMID: 15471930 DOI: 10.1093/humrep/deh545] [Citation(s) in RCA: 185] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Our preceding studies have already demonstrated the advantage of intracytoplasmic morphologically selected sperm injection (IMSI) over the conventional IVF-ICSI procedure in terms of pregnancy rate. This study was undertaken to determine whether the increased pregnancy outcome was attributable to the preferred nuclear morphology of the selected spermatozoa, and not to the special sperm preparation technique modified by IMSI. METHODS Comparison between two matched IMSI groups, i.e. negative comprising 38 cycles, where no spermatozoa with intact nuclei were available for microinjection; and positive, involving ovum microinjection by spermatozoa with strictly defined morphologically normal nuclei. RESULTS Implantation and pregnancy rates were significantly higher, and abortion rates significantly lower, in the positive group compared with the negative group (25.0+/-25.9 versus 5.9+/-12.9%, F=15.8, P< or =0.01; 52.6 versus 18.4%, chi2=9.7, P< or =0.01; and 10.0 versus 57.1%, chi2=7.1, P< or =0.02, respectively). CONCLUSIONS Implantation and pregnancy by ICSI is associated with morphological nuclear normalcy of sperm. Sperm with a morphologically abnormal nucleus usually have low fertility potential, but some with certain nuclear abnormalities may still be able to produce pregnancy following ICSI.
Collapse
Affiliation(s)
- Arie Berkovitz
- IVF Unit, Department of Obstetrics and Gynaecology, Sapir Medical Centre, Meir Hospital, Kfar Saba, Male Fertility Laboratory, Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
| | | | | | | | | | | | | |
Collapse
|
42
|
Perreault SD, Aitken RJ, Baker HWG, Evenson DP, Huszar G, Irvine DS, Morris ID, Morris RA, Robbins WA, Sakkas D, Spano M, Wyrobek AJ. Integrating new tests of sperm genetic integrity into semen analysis: breakout group discussion. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2004; 518:253-68. [PMID: 12817694 DOI: 10.1007/978-1-4419-9190-4_23] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Sally D Perreault
- U.S. EPA, ORD, NHEERL, Reproductive Toxicology Division, Research Triangle Park, NC 27711, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Apedaile AE, Garrett C, Liu DY, Clarke GN, Johnston SA, Baker HWG. Flow cytometry and microscopic acridine orange test: relationship with standard semen analysis. Reprod Biomed Online 2004; 8:398-407. [PMID: 15149562 DOI: 10.1016/s1472-6483(10)60923-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Improved prediction of male fertility requires advances in semen analysis. This study examined the reproducibility and independence of the flow cytometry acridine orange test (FCM-AOT) of sperm chromatin integrity as an assessment of semen quality. The study found that FCM-AOT results are not significantly affected by up to 6 h delay in semen preparation (n = 9) or contamination of semen with moderate concentrations of bacteria (<10(8)/ml E. coli or Staph. epidermidis, n = 14). The variation of replicate measurements within samples was low (%Abnormal alpha(t): SD = 1.4, 95%CI = 4.6, n = 25) and different samples from the same men were mostly within the range of measurement error (n = 35). FCM-AOT variables, in particular %Abnormal alpha(t), displayed significant correlations with motility (r = -0.557), vitality (r = -0.469) and morphology (r = -0.464, n = 201), which are similar in magnitude to those existing between the standard semen variables. Surprisingly, no correlation was found between %Abnormal alpha(t) and the microscopic acridine orange test (M-AOT) (n = 185), suggesting the FCM results are sensitive to a different aspect of sperm quality. In summary, this study confirms that although not totally independent of standard semen analysis or the M-AOT, it is found to be a robust, sensitive and reproducible measure of semen quality, representative of the individual.
Collapse
Affiliation(s)
- Anwyn E Apedaile
- Clinical Sciences Centre, Medical Research Council, Imperial College School of Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | | | | | | | | | | |
Collapse
|
44
|
Suzuki K, Nagai T. In vitro fertility and motility characteristics of frozen–thawed boar epididymal spermatozoa separated by Percoll. Theriogenology 2003; 60:1481-94. [PMID: 14519469 DOI: 10.1016/s0093-691x(03)00115-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Frozen-thawed epididymal spermatozoa from four boars were separated through a Percoll gradient, and motility characteristics and in vitro fertility were assessed. Percoll-separated spermatozoa had a significantly higher percentage of motile and progressively motile spermatozoa than those that were not separated (P < 0.0001). However, there were no clear differences in other motility parameters between Percoll-separated and un-separated spermatozoa. Furthermore, sperm agglutination was decreased by Percoll separation (P < 0.05). The effects of Percoll separation on in vitro fertility of spermatozoa differed among boars. In addition, there were large differences in fertility between sperm samples in vitro. Sperm samples, which indicate highly motile and progressively motile, did not always show high in vitro fertility. Furthermore, there was no distinct pattern between fertility in vitro and motility parameters. There was no difference in fertility in vitro between Percoll-separated and un-separated spermatozoa from two of the four boars. However, in vitro fertility of Percoll-separated spermatozoa was higher than that of un-separated spermatozoa from the other two boars.
Collapse
Affiliation(s)
- K Suzuki
- Tohoku National Agricultural Experiment Station, Morioka 020-0123, Japan.
| | | |
Collapse
|
45
|
Franken DR, Menkveld R, Kruger TF, Sekadde-Kigondu C, Lombard C. Monitoring technologist reading skills in a sperm morphology quality control program. Fertil Steril 2003; 79 Suppl 3:1637-43. [PMID: 12801571 DOI: 10.1016/s0015-0282(03)00367-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The value of sperm morphology as a predictor of a man's fertilizing potential has often been challenged because of different classification systems used to distinguish between normal and abnormal spermatozoa. The study aimed to monitor the reading skills of 53 laboratory technologists who are enrolled in a continuous quality control program for sperm morphology assessment. DESIGN Prospective analytical study. SETTINGS Academic hospital and academic institution setting. PATIENT(S) Sperm samples from the sperm donor program and andrology technicians from sub-Saharan Africa. INTERVENTION(S) Papanicolaou-stained sperm slides were prepared and shipped on a quarterly basis to participating laboratories. Papanicolaou-prestained sperm morphology slides were used as test material for 21 months. MAIN OUTCOME MEASURE(S) Percentage normal spermatozoa.A new statistical model was developed to record reading skills of the participating technicians. Reading skills were classified as marginal (5.7% of cases), good (11.3% of cases), and excellent (83% of cases). RESULT(S) Participants maintained their morphological reading skills and agreed with the reference laboratory by not exceeding a SD limit of 0.2 to set stringent standards for the program. CONCLUSION(S) Technician proficiency can be monitored using the results of a quality control program. A continuous quality control program can be initiated only after intensive training, because baseline values at the onset of the quality control program serves as an internal reference value.
Collapse
Affiliation(s)
- Daniel R Franken
- Reproductive Biology Research Laboratory, Department of Obstetrics and Gynaecology, University of Stellenbosch, Tygerberg, South Africa.
| | | | | | | | | |
Collapse
|
46
|
Abstract
A successful interaction between spermatozoa and the zona pellucida is critical for fertilization. This biological step reflects multiple sperm functions, including the acquisition and completion of capacitation, recognition and binding to specific zona pellucida receptors, and induction of the physiological acrosome reaction. The recognition of carbohydrate sequences by complimentary receptors has been demonstrated in gamete interaction in different animal species. It has been proposed that, in the human, sperm binding to the zona pellucida requires a 'selectin-like' interaction. The hemizona assay (a unique internally controlled bioassay that evaluates tight binding of human spermatozoa to the homologous zona pellucida) and advanced methods of carbohydrate analysis have been used to test this hypothesis. Compelling evidence exists to demonstrate that oligosaccharide recognition is also required for specific, tight human gamete binding. The induction of the acrosome reaction using the physiological inducers, i.e. the zona pellucida and progesterone, was also examined. It has also been demonstrated that there is a priming effect of the steroid on the acrosome reaction inducing capacity of the zona pellucida. These studies may allow for a better understanding of human gamete interaction in physiological and pathological situations.
Collapse
Affiliation(s)
- Sergio Oehninger
- The Jones Institute for Reproductive Medicine, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, 601 Colley Avenue, Norfolk, Virginia 23507, USA.
| |
Collapse
|
47
|
Liu DY, Baker HWG. Disordered zona pellucida-induced acrosome reaction and failure of in vitro fertilization in patients with unexplained infertility. Fertil Steril 2003; 79:74-80. [PMID: 12524067 DOI: 10.1016/s0015-0282(02)04555-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To determine the relationship between the zona pellucida (ZP)-induced acrosome reaction (AR) and fertilization rate and pregnancy rate in standard IVF and the frequency of disordered ZP-induced AR (DZPIAR) in patients with unexplained infertility. DESIGN Prospective study. SETTING Academic research and teaching tertiary hospital. PATIENTS Patients with unexplained infertility with normal semen analysis. INTERVENTION None. MAIN OUTCOME MEASURE Semen analysis, the ZP-induced AR, and measurements of fertilization rate and pregnancy rate with in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). RESULT(S) A statistically significant correlation was found for the ZP-induced AR and fertilization rate with standard IVF (n = 65). Patients with DZPIAR (ZP-induced AR of <or=16%) had an average fertilization rate of 23%, in contrast to patients with ZP-induced AR of >16%, who had an average fertilization rate of 61%. The sensitivity and specificity of DZPIAR for prediction of IVF rates <30% and >or=30% were 80% and 86%, respectively. Of 260 patients screened, the frequency of DZPIAR was 29%. Ten patients with DZPIAR had an average fertilization rate of 15% and no pregnancy with initial IVF cycles, and a fertilization rate of 61% (with three live-birth pregnancies) with subsequent ICSI cycles. Another 33 patients with DZPIAR were treated with ICSI alone, with an average fertilization rate of 71% and a live-birth pregnancy rate of 17% per embryo transfer. Sixteen of the patients had live-birth pregnancies (including one set of twins) after undergoing an average of 3.2 embryo transfers. CONCLUSION(S) Patients with DZPIAR have a low or zero fertilization rate with standard IVF but high fertilization and pregnancy rates with ICSI. Up to 29% of patients with unexplained infertility with normal semen analysis may have this condition, which should be diagnosed and treated with ICSI rather then standard IVF.
Collapse
Affiliation(s)
- De Yi Liu
- University of Melbourne Department of Obstetrics and Gynecology, Reproductive Services, Royal Women's Hospital and Melbourne IVF, Melbourne, Victoria, Australia.
| | | |
Collapse
|
48
|
McLachlan RI, Gordon Baker H, Clarke GN, Harrison KL, Matson PL, Holden CA, De Kretser DM. Semen analysis: its place in modern reproductive medical practice. Pathology 2003. [DOI: 10.1080/0031302021000062280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
49
|
Oehninger S. Pathophysiology of oligoasthenoteratozoo-spermia: are we improving in the diagnosis? Reprod Biomed Online 2003; 7:433-9. [PMID: 14656405 DOI: 10.1016/s1472-6483(10)61887-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Male infertility is one of the most common identifiable causes of human reproductive failure. Although considerable progress has been made toward understanding sperm physiology and the biology of gamete interaction, still more work is needed to achieve objectivity and standardization of some of the andrological diagnostic methods used in the clinical setting. More information is needed to definitively establish which tests are more accurate predictors of sperm performance and how they correlate with pregnancy potential following in-vivo and in-vitro interventions. Infertile men can be successfully treated with defined urological and medical therapies or with assisted reproductive technologies. Among the latter, intracytoplasmic sperm injection (ICSI) has become a validated means to overcome multiple sperm deficiencies. However, male infertility remains idiopathic in a large proportion of cases. As a consequence, it is expected that simplified and more cost-efficient therapeutic modalities will be developed as additional basic (cellular-molecular) and pathophysiological/clinical knowledge is gained.
Collapse
Affiliation(s)
- Sergio Oehninger
- The Jones Institute for Reproductive Medicine, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, 601 Colley Avenue, Norfolk, VA 23507, USA.
| |
Collapse
|
50
|
Tanghe S, Van Soom A, Sterckx V, Maes D, de Kruif A. Assessment of different sperm quality parameters to predict in vitro fertility of bulls. Reprod Domest Anim 2002; 37:127-32. [PMID: 12071885 DOI: 10.1046/j.1439-0531.2002.00343.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Frozen-thawed semen from six bulls with high (> 60%) and low (20-35%) in vitro fertility was used for studying the predictive value of simple sperm quality tests with respect to in vitro fertilization (IVF) outcome as assessed by pronucleus (PN) formation ability. Sperm quality parameters, such as sperm concentration, motility, progressive motility, live-dead sperm ratio, morphology, membrane integrity, mitochondrial activity and acrosomal status were analysed using both conventional and automatic techniques at three time points during the IVF process, namely after sperm thawing, Percoll differential gradient centrifugation and IVF. Associations between the sperm quality parameters before and after IVF, and PN formation ability were assessed by using linear regression analyses. The percentages of motility, progressive motility and normal morphology determined after sperm thawing, and the percentage of live spermatozoa assessed after Percoll preparation by using nigrosin-eosin (N-E) staining showed a good correlation with PN formation ability, but the regression parameters were borderline not significant. These parameters formed the most reliable basis for predicting IVF outcome. After IVF, the percentage of live spermatozoa determined by using N-E staining was the only sperm quality parameter showing a significant association with the PN formation ability of a given bull. This sperm quality test can be used as a non-invasive method to estimate the PN formation ability of oocytes which are further cultured to assess embryonic development.
Collapse
Affiliation(s)
- Sofie Tanghe
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | | | | | | | | |
Collapse
|