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Virgous C, Lyons L, Sakwe A, Nayyar T, Goodwin S, Hildreth J, Osteen K, Bruner-Tran K, Alawode O, Bourne P, Hills ER, Archibong AE. Resumption of Spermatogenesis and Fertility Post Withdrawal of Hydroxyurea Treatment. Int J Mol Sci 2023; 24:ijms24119374. [PMID: 37298325 DOI: 10.3390/ijms24119374] [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: 03/08/2023] [Revised: 04/11/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Hydroxyurea (HU), a drug for treating cancers of the blood and the management of sickle cell anemia, induces hypogonadism in males. However, the impact of HU on testicular architecture and function, as well as its effects on the resumption of male fertility following treatment withdrawal, remain poorly understood. We used adult male mice to determine whether HU-induced hypogonadism is reversible. Fertility indices of mice treated with HU daily for ~1 sperm cycle (2 months) were compared with those of their control counterparts. All indices of fertility were significantly reduced among mice treated with HU compared to controls. Interestingly, significant improvements in fertility indices were apparent after a 4-month withdrawal from HU treatment (testis weight: month 1 post-HU withdrawal (M1): HU, 0.09 ± 0.01 vs. control, 0.33 ± 0.03; M4: HU, 0.26 ± 0.03 vs. control, 0.37 ± 0.04 g); sperm motility (M1: HU,12 vs. 59; M4: HU, 45 vs. control, 61%; sperm density (M1: HU, 1.3 ± 0.3 vs. control, 15.7 ± 0.9; M4: HU, 8.1 ± 2.5 vs. control, 16.8 ± 1.9 million). Further, circulating testosterone increased in the 4th month following HU withdrawal and was comparable to that of controls. When a mating experiment was conducted, recovering males sired viable offspring with untreated females albeit at a lower rate than control males (p < 0.05); therefore, qualifying HU as a potential candidate for male contraception.
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Affiliation(s)
- Carlos Virgous
- Animal Care Facility, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37209, USA
| | - Letitia Lyons
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Amos Sakwe
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Tultul Nayyar
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Shawn Goodwin
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - James Hildreth
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Kevin Osteen
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Kaylon Bruner-Tran
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Oluwatobi Alawode
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Phillip Bourne
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Edward Richard Hills
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
| | - Anthony E Archibong
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, 1005 D.B. Todd Blvd, Nashville, TN 37208, USA
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2
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Ibrahim Y, Einerson B, Carrell DT, Emery BR, Johnstone E. The hamster egg penetration test may decrease intracytoplasmic sperm injection utilization while maintaining high conventional fertilization rates. Asian J Androl 2021; 23:11-15. [PMID: 32436865 PMCID: PMC7831835 DOI: 10.4103/aja.aja_18_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
This was a cohort study of in vitro fertilization (IVF) subjects at the University of Utah, Salt Lake City (UT, USA) utilizing partner sperm. Cycles where both the hamster egg penetration test (HEPT) and semen analysis were performed within 2 years prior to IVF cycles were stratified into four groups based on a normal or an abnormal HEPT and morphology. The mean conventional and intracytoplasmic sperm injection (ICSI) fertilization rates were calculated in each group. We performed a univariate analysis on the primary outcome comparing clinically interesting subjects. We performed a cost-effectiveness analysis of a policy of HEPT versus universal ICSI in couples with an abnormal morphology. Among patients with a normal HEPT, there was no difference in the mean conventional fertilization rates between those with a normal and an abnormal morphology. There was no difference in the mean conventional fertilization rates between subjects with a normal morphology without a hamster test and those with a normal HEPT without a morphology assessment. In 1000 simulated cycles with an abnormal morphology, a policy of HEPT was cost saving compared to universal ICSI, yet produced similar fertilization rates. The HEPT is similar to the World Health Organization edition 5 (WHO-5) morphology in predicting successful conventional fertilization while allowing decreased utilization of ICSI. A policy of HEPT for males with abnormal morphology saves cost in selecting couples for a fertilization method.
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Affiliation(s)
- Yetunde Ibrahim
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Brett Einerson
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Douglas T Carrell
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA.,Division of Urology, Department of Surgery, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA.,Department of Human Genetics, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Benjamin R Emery
- Division of Urology, Department of Surgery, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
| | - Erica Johnstone
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Utah, School of Medicine, Salt Lake City, UT 84132, USA
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3
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Niżański W, Partyka A, Prochowska S. Evaluation of spermatozoal function-useful tools or just science. Reprod Domest Anim 2016; 51 Suppl 1:37-45. [PMID: 27670939 DOI: 10.1111/rda.12786] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Conventional microscopic semen analysis does not provide precise information on the fertilizing potential of a male. The traditional basis for semen evaluation is that male fertility is dependent on production of a "proper" concentration/number of motile, morphologically normal spermatozoa in excess to achieve conception. Many independent studies, especially in human medicine, have demonstrated that the absolute number of spermatozoa does not accurately determine fertility, but their functional competence. Many functional tests of spermatozoa are developed over the last decades. Computer-assisted sperm analysis (CASA) and flow cytometry have become the gold standard for semen assessment in specialized andrology laboratories. Other functional assays, such as gamete interaction tests, provide additional information regarding the real fertilizing potential of sperm cells. From this point of view, such tests are valuable diagnostic tools in fertility disorders and may be helpful to make a decision which method of treatment to use: pharmacological therapy, intrauterine insemination, introduction of classic IVF, ICSI or exclusion from a breeding programme. The most useful gamete interaction tests include induced acrosome reaction, zona pellucida binding assay, oocyte penetration assay and hyaluronan binding assay. In recent years, andrology has entered into a new era of sophisticated OMICS methods. Genomics, epigenomics, transcriptomics and proteomics brought high hopes for rapid progress in clinical diagnostics.
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Affiliation(s)
- W Niżański
- Department of Reproduction, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.
| | - A Partyka
- Department of Reproduction, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - S Prochowska
- Department of Reproduction, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
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4
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Esteves SC, Sharma RK, Gosálvez J, Agarwal A. A translational medicine appraisal of specialized andrology testing in unexplained male infertility. Int Urol Nephrol 2014; 46:1037-52. [PMID: 24771472 DOI: 10.1007/s11255-014-0715-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 04/05/2014] [Indexed: 02/06/2023]
Abstract
The diagnostic and prognostic validity of sperm function biomarkers is particularly relevant for males with unexplained infertility in which routine semen analysis fails to detect subcellular sperm dysfunctions. In this general review, we examine the role and significance of specialized andrology laboratory tests from past to present and provide a glance toward the future. We concluded that the assessment of sperm DNA damage and oxidative stress provide a relatively independent measure of fertility that yields diagnostic and prognostic information complementary to, but distinct and more significant than, standard sperm parameters. Since none of the available methods for such testing have been fully translated, further research is necessary to evaluate their cost-effectiveness when applied in large scale to daily medical practice. Application of translational medicine concepts would also be useful to accelerate the clinical application of recent discoveries in the fields of genomics, proteomics and metabolomics.
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Affiliation(s)
- Sandro C Esteves
- Androfert, Andrology and Human Reproduction Clinic, Av. Dr. Heitor Penteado, 1464, Campinas, São Paulo, 13075-460, Brazil,
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5
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Vogiatzi P, Chrelias C, Cahill DJ, Creatsa M, Vrachnis N, Iliodromiti Z, Kassanos D, Siristatidis C. Hemizona assay and sperm penetration assay in the prediction of IVF outcome: a systematic review. BIOMED RESEARCH INTERNATIONAL 2013; 2013:945825. [PMID: 24228261 PMCID: PMC3818817 DOI: 10.1155/2013/945825] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 09/01/2013] [Indexed: 11/17/2022]
Abstract
The limited predictive value of semen analysis in achieving natural conception or in IVF outcome confirms the need for sperm function tests to determine optimal management. We reviewed HZA and SPA predictive power in IVF outcome, with statistical significance of diagnostic power of the assays. HZA was readily efficient in predicting IVF outcome, while evident inconsistency among the studies analysed framed the SPA's role in male fertility evaluation. Considerable variation was noted in the diagnostic accuracy values of SPA with wide sensitivity (52-100%), specificity (0-100%), and PPV (18-100%) and NPV (0-100%) together with fluctuation and notable differentiation in methodology and cutoff values employed by each group. HZA methodology was overall consistent with minor variation in cutoff values and oocyte source, while data analysis reported strong correlation between HZA results with IVF outcome, high sensitivity (75-100%), good specificity (57-100%), and high PPV (79-100%) and NPV (68-100%). HZA correlated well with IVF outcome and demonstrated better sensitivity/specificity and positive/negative predictive power. Males with normal or slightly abnormal semen profiles could benefit by this intervention and could be evaluated prior to referral to assisted reproduction. HZA should be used in a sequential fashion with semen analysis and potentially other bioassays in an IVF setting.
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Affiliation(s)
- Paraskevi Vogiatzi
- Assisted Reproduction Unit, 3rd Department of Obstetrics and Gynecology, University of Athens, Attikon Hospital, Rimini 1, Chaidari, 12642 Athens, Greece
| | - Charalampos Chrelias
- 3rd Department of Obstetrics and Gynecology, University of Athens, Attikon Hospital, Rimini 1, Chaidari, 12642 Athens, Greece
| | - David J. Cahill
- School of Clinical Sciences, University of Bristol, Level D, St Michael's Hospital, Bristol BS2 8EG, UK
| | - Maria Creatsa
- Assisted Reproduction Unit, 3rd Department of Obstetrics and Gynecology, University of Athens, Attikon Hospital, Rimini 1, Chaidari, 12642 Athens, Greece
| | - Nikos Vrachnis
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieion Hospital, Vasilissis Sofias 76, 11528 Athens, Greece
| | - Zoe Iliodromiti
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieion Hospital, Vasilissis Sofias 76, 11528 Athens, Greece
| | - Demetrios Kassanos
- 3rd Department of Obstetrics and Gynecology, University of Athens, Attikon Hospital, Rimini 1, Chaidari, 12642 Athens, Greece
| | - Charalampos Siristatidis
- Assisted Reproduction Unit, 3rd Department of Obstetrics and Gynecology, University of Athens, Attikon Hospital, Rimini 1, Chaidari, 12642 Athens, Greece
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6
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Hamada A, Esteves SC, Nizza M, Agarwal A. Unexplained male infertility: diagnosis and management. Int Braz J Urol 2013; 38:576-94. [PMID: 23131516 DOI: 10.1590/s1677-55382012000500002] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2012] [Indexed: 12/15/2022] Open
Abstract
Unexplained male infertility is a diagnosis reserved for men in whom routine semen analyses results are within normal values and physical as well as endocrine abnormalities were ruled out. In addition to erectile problems and coital factors, immunologic causes and sperm dysfunction may contribute to such condition. New etiologies of unexplained male infertility include low level leukocytospermia and mitochondrial DNA polymerase gene polymorphism. Contemporary andrology may reveal cellular and sub-cellular sperm dysfunctions which may explain subfertility in such cases, thus aiding the clinician to direct the further work-up, diagnosis and counseling of the infertile male. The objective of this article is to highlight the concept of unexplained male infertility and focuses on the diagnosis and treatment of this condition in the era of modern andrology and assisted reproductive techniques. Extensive literature review was performed using the search engines: Pubmed, Science-direct, Ovid and Scopus.
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Affiliation(s)
- Alaa Hamada
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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7
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The sperm penetration assay for the assessment of fertilization capacity. Methods Mol Biol 2013; 927:103-11. [PMID: 22992907 DOI: 10.1007/978-1-62703-038-0_10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The sperm penetration assay, or zona-free hamster oocyte penetration assay, is utilized to measure the ability of sperm to undergo capacitation, fuse with the egg membrane, and decondense the sperm head within the cytoplasm of the oocyte, resulting in the formation of the male pronucleus. The test is scored by calculation of the percentage of ova that are penetrated (the original assay developed) or the average number of sperm penetrations per ovum (the sperm capacitation index of the optimized assay). The sperm penetration assay identifies those couples that will have a high likelihood of success with in vitro fertilization.
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8
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Sharbatoghli M, Valojerdi MR, Amanlou M, Khosravi F, Jafar-abadi MA. Relationship of sperm DNA fragmentation, apoptosis and dysfunction of mitochondrial membrane potential with semen parameters and ART outcome after intracytoplasmic sperm injection. Arch Gynecol Obstet 2012; 286:1315-22. [DOI: 10.1007/s00404-012-2440-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 06/18/2012] [Indexed: 12/01/2022]
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9
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Correlation of the sperm penetration assay (SPA) and miscarriage after assisted reproduction: The potential use of spa as a new criterion for preimplantation genetic diagnosis. ARCH BIOL SCI 2011. [DOI: 10.2298/abs1101107g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
We analyzed 93 couples undergoing male screening with the Sperm Penetration
Assay (SPA) before in vitro fertilization and intracytoplasmic sperm
injection (ICSI), to determine the accuracy of SPA for subsequent embryonic
development, incidence of pregnancy and miscarriage rates (SAB). ICSI
patients with the lowest SPA scores had significantly higher incidences of
Sthan did patients in the other SPA groups. Sperm quality is higher with
better SPA scores. Poor sperm quality has increased incidence of chromosomal
abnormalities and is associated with early fetal loss. Couples with negative
SPA are candidates for preimplantation genetic diagnosis, to reduce the
incidence of SAB.
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10
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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]
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11
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Comparison of 5% and ambient oxygen during days 3–5 of in vitro culture of human embryos. Fertil Steril 2010; 93:579-85. [DOI: 10.1016/j.fertnstert.2009.02.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 01/12/2009] [Accepted: 02/17/2009] [Indexed: 11/18/2022]
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12
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Berlinguer F, Madeddu M, Pasciu V, Succu S, Spezzigu A, Satta V, Mereu P, Leoni GG, Naitana S. Semen molecular and cellular features: these parameters can reliably predict subsequent ART outcome in a goat model. Reprod Biol Endocrinol 2009; 7:125. [PMID: 19900288 PMCID: PMC2777909 DOI: 10.1186/1477-7827-7-125] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Accepted: 11/09/2009] [Indexed: 11/16/2022] Open
Abstract
Currently, the assessment of sperm function in a raw or processed semen sample is not able to reliably predict sperm ability to withstand freezing and thawing procedures and in vivo fertility and/or assisted reproductive biotechnologies (ART) outcome. The aim of the present study was to investigate which parameters among a battery of analyses could predict subsequent spermatozoa in vitro fertilization ability and hence blastocyst output in a goat model. Ejaculates were obtained by artificial vagina from 3 adult goats (Capra hircus) aged 2 years (A, B and C). In order to assess the predictive value of viability, computer assisted sperm analyzer (CASA) motility parameters and ATP intracellular concentration before and after thawing and of DNA integrity after thawing on subsequent embryo output after an in vitro fertility test, a logistic regression analysis was used. Individual differences in semen parameters were evident for semen viability after thawing and DNA integrity. Results of IVF test showed that spermatozoa collected from A and B lead to higher cleavage rates (0 < 0.01) and blastocysts output (p < 0.05) compared with C. Logistic regression analysis model explained a deviance of 72% (p < 0.0001), directly related with the mean percentage of rapid spermatozoa in fresh semen (p < 0.01), semen viability after thawing (p < 0.01), and with two of the three comet parameters considered, i.e tail DNA percentage and comet length (p < 0.0001). DNA integrity alone had a high predictive value on IVF outcome with frozen/thawed semen (deviance explained: 57%). The model proposed here represents one of the many possible ways to explain differences found in embryo output following IVF with different semen donors and may represent a useful tool to select the most suitable donors for semen cryopreservation.
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Affiliation(s)
- Fiammetta Berlinguer
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Manuela Madeddu
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Valeria Pasciu
- Presidenza, Biblioteca Veterinaria, Faculty of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Sara Succu
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Antonio Spezzigu
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Valentina Satta
- Department of Physiological, Biochemical and Cellular Science, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Paolo Mereu
- Department of Physiological, Biochemical and Cellular Science, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Giovanni G Leoni
- Department of Physiological, Biochemical and Cellular Science, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Salvatore Naitana
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
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13
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Chen X, Zhang W, Luo Y, Long X, Sun X. Predictive value of semen parameters inin vitrofertilisation pregnancy outcome. Andrologia 2009; 41:111-7. [DOI: 10.1111/j.1439-0272.2008.00898.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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14
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Henkel R, MAAß G, Bödeker RH, Scheibelhut C, Stalf T, Mehnert C, Schuppe HC, Jung A, Schill WB. Sperm function and assisted reproduction technology. Reprod Med Biol 2005; 4:7-30. [PMID: 29699207 DOI: 10.1111/j.1447-0578.2005.00087.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The evaluation of different functional sperm parameters has become a tool in andrological diagnosis. These assays determine the sperm's capability to fertilize an oocyte. It also appears that sperm functions and semen parameters are interrelated and interdependent. Therefore, the question arose whether a given laboratory test or a battery of tests can predict the outcome in in vitro fertilization (IVF). One-hundred and sixty-one patients who underwent an IVF treatment were selected from a database of 4178 patients who had been examined for male infertility 3 months before or after IVF. Sperm concentration, motility, acrosin activity, acrosome reaction, sperm morphology, maternal age, number of transferred embryos, embryo score, fertilization rate and pregnancy rate were determined. In addition, logistic regression models to describe fertilization rate and pregnancy were developed. All the parameters in the models were dichotomized and intra- and interindividual variability of the parameters were assessed. Although the sperm parameters showed good correlations with IVF when correlated separately, the only essential parameter in the multivariate model was morphology. The enormous intra- and interindividual variability of the values was striking. In conclusion, our data indicate that the andrological status at the end of the respective treatment does not necessarily represent the status at the time of IVF. Despite a relatively low correlation coefficient in the logistic regression model, it appears that among the parameters tested, the most reliable parameter to predict fertilization is normal sperm morphology. (Reprod Med Biol 2005; 4: 7-30).
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Affiliation(s)
- Ralf Henkel
- Department of Urology, Friedrich Schiller University, Jena.,Center for Dermatology and Andrology
| | - Gesa MAAß
- Center for Dermatology and Andrology
| | - Rolf-Hasso Bödeker
- Institute for Medical Informatics, Working Group for Medical Statistics, and
| | | | - Thomas Stalf
- Institute for Reproductive Medicine, Justus Liebig University, Giessen, Germany
| | - Claas Mehnert
- Institute for Reproductive Medicine, Justus Liebig University, Giessen, Germany
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15
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Henkel R, Maa\ G, Bödeker RH, Scheibelhut C, Stalf T, Mehnert C, Schuppe HC, Jung A, Schill WB. Sperm function and assisted reproduction technology. Reprod Med Biol 2005. [DOI: 10.1007/bf03016134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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