1
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Inoue T, Taguchi S, Uemura M, Tsujimoto Y, Kokunai K, Ikawa K, Yamashita Y. The migration speed of nucleolar precursor bodies in pronuclei affects in vitro fertilization-derived human embryo ploidy status and live birth. Reprod Med Biol 2023; 22:e12497. [PMID: 36699958 PMCID: PMC9853468 DOI: 10.1002/rmb2.12497] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/04/2022] [Accepted: 12/21/2022] [Indexed: 01/22/2023] Open
Abstract
Purpose To study the relationship between clinical outcomes after assisted reproduction and the migration speed of nucleolus precursor bodies (NPBs) in male and female pronuclei (mPN; fPN). Methods NPB migration speed, embryo ploidy status, and live birth (LB) were retrospectively analyzed in IVF-derived zygotes. The central coordinates of the mPN, fPN, and NPBs were noted at multiple timepoints. The migration distance of NPBs between two sequential images was measured to calculate NPB migration speed. Results The NPB migration speeds in mPN and fPN were significantly faster in euploid zygotes than in aneuploid zygotes. In multivariate logistic analysis, NPB migration speed in mPN and the female age were associated with euploidy. The NPB migration speeds in mPN and fPN were also significantly faster in zygotes that led to LB than in zygotes that led to no pregnancy. In a receiver operating characteristic curve analysis of LB by NPB migration speed in mPN, the cut-off value was 3.74 μm/h (AUC: 0.825, 95%CI: 0.688-0.963). When the zygotes were categorized by this cut-off value, there were significantly more LBs in zygotes with migration speed ≥ the cut-off (78.9% vs. 21.1%). Conclusions Zygotes with quickly migrating NPBs demonstrated the developmental potential to become a baby.
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Affiliation(s)
- Taketo Inoue
- Umeda Fertility ClinicOsakaJapan
- Department of Emergency, Disaster and Critical Care MedicineHyogo Medical UniversityNishinomiyaJapan
| | | | - Mikiko Uemura
- Department of Rehabilitation, Faculty of Health ScienceKansai University of Welfare SciencesOsakaJapan
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Leary C, Sturmey RG. Metabolic profile of in vitro derived human embryos is not affected by the mode of fertilization. Mol Hum Reprod 2020; 26:277-287. [PMID: 32059054 PMCID: PMC8598873 DOI: 10.1093/molehr/gaaa015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 02/05/2020] [Indexed: 11/24/2022] Open
Abstract
The pattern of metabolism by early embryos in vitro has been linked to a range of phenotypes, including viability. However, the extent to which metabolic function of embryos is modified by specific methods used during ART has yet to be fully described. This study has sought to determine if the mode of fertilization used to create embryos affects subsequent embryo metabolism of substrates. A metabolic profile, including consumption of key substrates and the endogenous triglyceride content of individual IVF and ICSI supernumerary embryos, was assessed and compared. Embryo development and quality was also recorded. All embryos were donated at a single clinical IVF center, on Day 5, from 36 patients aged 18-38 years, The data revealed that consumption of glucose and pyruvate, and production of lactate, did not differ between embryos created by IVF or ICSI. Similarly, the mode of insemination did not impact on the triglyceride content of embryos. However, ICSI-derived embryos displayed a more active turnover of amino acids (P = 0.023), compared to IVF embryos. The specific amino acids produced in higher quantities from ICSI compared to IVF embryos were aspartate (P = 0.016), asparagine (P = 0.04), histidine (P = 0.021) and threonine (P = 0.009) while leucine consumption was significantly lower (P = 0.04). However, importantly neither individual nor collective differences in amino acid metabolism were apparent for sibling oocytes subjected to either mode of fertilization. Embryo morphology (the number of top grade embryos) and development (proportion reaching the blastocyst stage) were comparable in patients undergoing IVF and ICSI. In conclusion, the microinjection of spermatozoa into oocytes does not appear to have an impact on subsequent metabolism and viability. Observed differences in amino acid metabolism may be attributed to male factor infertility of the patients rather than the ICSI procedure per se.
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Affiliation(s)
- Christine Leary
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, Faculty of Health Sciences, The University of Hull, Hull, HU6 7RX, UK
- The Hull IVF Unit, The Women and Children’s Hospital, Hull Royal Infirmary, Anlaby Road, Hull, HU3 2JZ, UK
| | - Roger G Sturmey
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, Faculty of Health Sciences, The University of Hull, Hull, HU6 7RX, UK
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Zheng D, Zeng L, Yang R, Lian Y, Zhu YM, Liang X, Tang L, Wang H, Cao Y, Hao G, Liu J, Zhao J, Wang R, Mol BW, Li R, Huang HF, Qiao J. Intracytoplasmic sperm injection (ICSI) versus conventional in vitro fertilisation (IVF) in couples with non-severe male infertility (NSMI-ICSI): protocol for a multicentre randomised controlled trial. BMJ Open 2019; 9:e030366. [PMID: 31575574 PMCID: PMC6773417 DOI: 10.1136/bmjopen-2019-030366] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/19/2019] [Accepted: 08/23/2019] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION Intracytoplasmic sperm injection (ICSI), originally introduced as add-on to in vitro fertilisation (IVF) for couples with severe male infertility, is in current clinical practice also used in couples with mild male or even unexplained infertility. However, ICSI has involved unresolved concerns regarding the selection and damage to gametes and the health conditions of the offspring, and it is also labour intensive and therefore more expensive than conventional IVF. High-quality well-powered randomised clinical trials (RCTs) comparing ICSI and IVF are lacking. METHODS AND ANALYSIS We propose a multicentre, open-label RCT in 10 reproductive medical centres across China. We will study couples with non-severe male infertility (defined as a semen concentrate 5-15×106/mL or sperm with a progressive motility 10%-32%) scheduled for their first or second ICSI or IVF cycle, as low fertility rate after fertilisation are more frequent in this population, which could lead to controversy about ICSI or conventional IVF for fertilisation. On the day of oocyte retrieval, eligible participants are after informed consent be randomised to undergo either ICSI or conventional IVF in a 1:1 treatment ratio. Other standard assisted reproductive treatments are similar and parallel between two groups. Our primary outcome is ongoing pregnancy leading to live birth after the first cycle with embryo transfer. To demonstrate or refute a difference of 7% between ICSI and conventional IVF, we need to include 2346 women (1173 in each intervention arm). In addition, we will follow-up neonatal outcomes after delivery to identify the influence of ICSI on offspring. ETHICS AND DISSEMINATION Ethical approval was obtained from Peking University Third Hospital medical science research ethics committee. The findings will be disseminated to the public through conference presentations and peer-reviewed scientific journals. TRIAL REGISTRATION NUMBER ClinicalTrials.gov registry (NCT03298633).
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Affiliation(s)
- Danni Zheng
- Centre for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Centre for Obstetrics and Gynecology, Beijing, China
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
- Beijing Advanced Innovation Centre for Genomics, Beijing, China
- Peking-Tsinghua Centre for Life Sciences, Peking University, Beijing, China
| | - Lin Zeng
- Research Centre of Clinical Epidemiology, Peking University Third Hospital, Beijing, China
| | - Rui Yang
- Centre for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Centre for Obstetrics and Gynecology, Beijing, China
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
- Beijing Advanced Innovation Centre for Genomics, Beijing, China
- Peking-Tsinghua Centre for Life Sciences, Peking University, Beijing, China
| | - Ying Lian
- Centre for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Centre for Obstetrics and Gynecology, Beijing, China
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
- Beijing Advanced Innovation Centre for Genomics, Beijing, China
- Peking-Tsinghua Centre for Life Sciences, Peking University, Beijing, China
| | - Yi-Min Zhu
- Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoyan Liang
- Reproductive Medicine Centre of The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Li Tang
- First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Huichun Wang
- Haidian Maternal and Child Health Hospital, Beijing, China
| | - Yunxia Cao
- First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Guimin Hao
- The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jianqiao Liu
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Junli Zhao
- General Hospital of Ningxia Medical University, Yinchuan, China
| | - Rui Wang
- Robinson Research Institute and Adelaide Medical School, Adelaide, South Australia, Australia
- Department of Obstetrics and Gynaecology, Monash University, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Ben Willem Mol
- Department of Obstetrics and Gynaecology, Monash University, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Rong Li
- Centre for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Centre for Obstetrics and Gynecology, Beijing, China
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
- Beijing Advanced Innovation Centre for Genomics, Beijing, China
- Peking-Tsinghua Centre for Life Sciences, Peking University, Beijing, China
| | - He-Feng Huang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Qiao
- Centre for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Centre for Obstetrics and Gynecology, Beijing, China
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
- Beijing Advanced Innovation Centre for Genomics, Beijing, China
- Peking-Tsinghua Centre for Life Sciences, Peking University, Beijing, China
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Esteves SC, Roque M, Bedoschi G, Haahr T, Humaidan P. Intracytoplasmic sperm injection for male infertility and consequences for offspring. Nat Rev Urol 2019; 15:535-562. [PMID: 29967387 DOI: 10.1038/s41585-018-0051-8] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) has become the most commonly used method of fertilization in assisted reproductive technology. The primary reasons for its popularity stem from its effectiveness, the standardization of the procedure, which means that it can easily be incorporated into the routine practice of fertility centres worldwide, and the fact that it can be used to treat virtually all forms of infertility. ICSI is the clear method of choice for overcoming untreatable severe male factor infertility, but its (over)use in other male and non-male factor infertility scenarios is not evidence-based. Despite all efforts to increase ICSI efficacy and safety through the application of advanced sperm retrieval and cryopreservation techniques, as well as methods for selecting sperm with better chromatin integrity, the overall pregnancy rates from infertile men remain suboptimal. Treating the underlying male infertility factor before ICSI seems to be a promising way to improve ICSI outcomes, but data remain limited. Information regarding the health of ICSI offspring has accumulated over the past 25 years, and there are reasons for concern as risks of congenital malformations, epigenetic disorders, chromosomal abnormalities, subfertility, cancer, delayed psychological and neurological development, and impaired cardiometabolic profile have been observed to be greater in infants born as a result of ICSI than in naturally conceived children. However, as subfertility probably influences the risk estimates, it remains to be determined to what extent the observed adverse outcomes are related to parental factors or associated with ICSI.
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Affiliation(s)
- Sandro C Esteves
- ANDROFERT, Andrology and Human Reproduction Clinic, Campinas, Brazil. .,Department of Surgery (Division of Urology), Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil. .,Faculty of Health, Aarhus University, Aarhus, Denmark.
| | - Matheus Roque
- ORIGEN, Center for Reproductive Medicine, Rio de Janeiro, Brazil
| | - Giuliano Bedoschi
- Division of Reproductive Medicine, Department of Gynecology and Obstetrics, University of São Paulo (USP), São Paulo, Brazil
| | - Thor Haahr
- Faculty of Health, Aarhus University, Aarhus, Denmark.,Fertility Clinic, Skive Regional Hospital, Skive, Denmark
| | - Peter Humaidan
- Faculty of Health, Aarhus University, Aarhus, Denmark.,Fertility Clinic, Skive Regional Hospital, Skive, Denmark
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5
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Olszewska M, Wiland E, Huleyuk N, Fraczek M, Midro AT, Zastavna D, Kurpisz M. Chromosome (re)positioning in spermatozoa of fathers and sons - carriers of reciprocal chromosome translocation (RCT). BMC Med Genomics 2019; 12:30. [PMID: 30709354 PMCID: PMC6359769 DOI: 10.1186/s12920-018-0470-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 12/28/2018] [Indexed: 01/05/2023] Open
Abstract
Background Non-random chromosome positioning has been observed in the nuclei of several different tissue types, including human spermatozoa. The nuclear arrangement of chromosomes can be altered in men with decreased semen parameters or increased DNA fragmentation and in males with chromosomal numerical or structural aberrations. An aim of this study was to determine whether and how the positioning of nine chromosome centromeres was (re)arranged in the spermatozoa of fathers and sons – carriers of the same reciprocal chromosome translocation (RCT). Methods Fluorescence in situ hybridization (FISH) was applied to analyse the positioning of sperm chromosomes in a group of 13 carriers of 11 RCTs, including two familial RCT cases: t(4;5) and t(7;10), followed by analysis of eight control individuals. Additionally, sperm chromatin integrity was evaluated using TUNEL and Aniline Blue techniques. Results In the analysed familial RCT cases, repositioning of the chromosomes occurred in a similar way when compared to the data generated in healthy controls, even if some differences between father and son were further observed. These differences might have arisen from various statuses of sperm chromatin disintegration. Conclusions Nuclear topology appears as another aspect of epigenetic genomic regulation that may influence DNA functioning. We have re-documented that chromosomal positioning is defined in control males and that a particular RCT is reflected in the individual pattern of chromosomal topology. The present study examining the collected RCT group, including two familial cases, additionally showed that chromosomal factors (karyotype and hyperhaploidy) have superior effects, strongly influencing the chromosomal topology, when confronted with sperm chromatin integrity components (DNA fragmentation or chromatin deprotamination). Electronic supplementary material The online version of this article (10.1186/s12920-018-0470-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marta Olszewska
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland
| | - Ewa Wiland
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland
| | - Nataliya Huleyuk
- National Academy of Medical Sciences of Ukraine, Institute of Hereditary Pathology, Lysenko Str. 31a, Lviv, 79000, Ukraine
| | - Monika Fraczek
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland
| | - Alina T Midro
- Department of Clinical Genetics, Medical University of Bialystok, Waszyngtona 13, PO Box 22, 15-089, Bialystok, Poland
| | - Danuta Zastavna
- National Academy of Medical Sciences of Ukraine, Institute of Hereditary Pathology, Lysenko Str. 31a, Lviv, 79000, Ukraine.,Department of Biotechnology and Bioinformatics, Faculty of Chemistry, Rzeszow University of Technology, Al. Powstancow Warszawy 6, 35-959, Rzeszow, Poland
| | - Maciej Kurpisz
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland.
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Altered three-dimensional organization of sperm genome in DPY19L2-deficient globozoospermic patients. J Assist Reprod Genet 2018; 36:69-77. [PMID: 30362053 DOI: 10.1007/s10815-018-1342-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 10/12/2018] [Indexed: 02/07/2023] Open
Abstract
PURPOSE To explore the three-dimensional (3D) organization of sperm genome in DPY19L2-deficient globozoospermic patients speculating a link between DPY19L2 and genome organization of sperm nucleus. METHODS This is a study of chromatin organization in DPY19L2-deficient globozoospermic patients and healthy donors using three-dimensional fluorescence in situ hybridization (3D-FISH) combined with confocal laser scanning microscopy followed by 3D image analysis. The 3D structures of sperm nuclei, chromocenter, telomeric regions and chromosome territories (CTs), were reconstructed using IMARIS software, and the relative radial position for each individual signal was calculated. Statistical analysis used a non-parametric Mann-Whitney test was appropriate with significance at p < 0.05. RESULTS DPY19L2-deficient globozoospermic patients display impaired sperm chromocenter organization resulting in an increased number of chromocenters (5.4 vs 3.5; p < 0.0001). Moreover, radial positions of telomeres are modified with a more central position in globozoospermic nuclei. 3D-FISH analysis of five chromosome territories (CTs) (X, Y, 7, 17, 18) showed that DPY19L2-deficient globozoospermic sperm nuclei display altered spatial organization of CT X, CT 7 and CT 18. CONCLUSIONS Our findings strengthen the hypothesis that DPY19L2 might be considered as a LINC-like protein having a crucial role in the organization of nuclear chromatin in sperm nucleus through its interaction with nuclear lamina. Our results might also explain defective embryonic development after intracytoplasmic sperm injection (ICSI) performed with DPY19L2-deficient globozoospermic sperm.
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Chromosome positioning and male infertility: it comes with the territory. J Assist Reprod Genet 2018; 35:1929-1938. [PMID: 30229502 DOI: 10.1007/s10815-018-1313-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 09/11/2018] [Indexed: 01/30/2023] Open
Abstract
The production of functional spermatozoa through spermatogenesis requires a spatially and temporally highly regulated gene expression pattern, which in case of alterations, leads to male infertility. Changes of gene expression by chromosome anomalies, gene variants, and epigenetic alterations have been described as the main genetic causes of male infertility. Recent molecular and cytogenetic approaches have revealed that higher order chromosome positioning is essential for basic genome functions, including gene expression. This review addresses this issue by exposing well-founded evidences which support that alterations on the chromosome topology in spermatogenetic cells leads to defective sperm function and could be considered as an additional genetic cause of male infertility.
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8
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Esteves SC, Agarwal A, Majzoub A. An evidence-based perspective on the role of sperm chromatin integrity and sperm DNA fragmentation testing in male infertility. Transl Androl Urol 2017; 6:S665-S672. [PMID: 29082963 PMCID: PMC5643668 DOI: 10.21037/tau.2017.05.39] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Sandro C Esteves
- ANDROFERT, Andrology and Human Reproduction Clinic, Campinas, Brazil.,Division of Urology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ahmad Majzoub
- Department of Urology, Hamad Medical Corporation, Doha, Qatar
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9
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Jiang Z, Wang Y, Lin J, Xu J, Ding G, Huang H. Genetic and epigenetic risks of assisted reproduction. Best Pract Res Clin Obstet Gynaecol 2017; 44:90-104. [PMID: 28844405 DOI: 10.1016/j.bpobgyn.2017.07.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/22/2017] [Accepted: 07/26/2017] [Indexed: 12/30/2022]
Abstract
Assisted reproductive technology (ART) is used primarily for infertility treatments to achieve pregnancy and involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), and cryopreservation. Moreover, preimplantation genetic diagnosis (PGD) of ART is used in couples for genetic reasons. In ART treatments, gametes and zygotes are exposed to a series of non-physiological processes and culture media. Although the majority of children born with this treatment are healthy, some concerns remain regarding the safety of this technology. Animal studies and follow-up studies of ART-borne children suggested that ART was associated with an increased incidence of genetic, physical, or developmental abnormalities, although there are also observations that contradict these findings. As IVF, ICSI, frozen-thawed embryo transfer, and PGD manipulate gametes and embryo at a time that is important for reprogramming, they may affect epigenetic stability, leading to gamete/embryo origins of adult diseases. In fact, ART offspring have been reported to have an increased risk of gamete/embryo origins of adult diseases, such as early-onset diabetes, cardiovascular disease, and so on. In this review, we will discuss evidence related to genetic, especially epigenetic, risks of assisted reproduction.
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Affiliation(s)
- Ziru Jiang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yinyu Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Lin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jingjing Xu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guolian Ding
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hefeng Huang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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10
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Maternal and Live-birth Outcomes of Pregnancies following Assisted Reproductive Technology: A Retrospective Cohort Study. Sci Rep 2016; 6:35141. [PMID: 27762324 PMCID: PMC5071829 DOI: 10.1038/srep35141] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 09/23/2016] [Indexed: 01/08/2023] Open
Abstract
This study was carried out to explore associations between assisted reproductive technology (ART) and maternal and neonatal outcomes compared with similar outcomes following spontaneously conceived births. We conducted a retrospective cohort study of pregnancies conceived by ART (N = 2641) during 2006–2014 compared to naturally conceived pregnancies (N = 5282) after matching for maternal age and birth year. Pregnancy complications, perinatal complications and neonatal outcomes of enrolled subjects were investigated and analysed by multivariate logistic regression. We found that pregnancies conceived by in vitro fertilization (IVF) were associated with a significantly increased incidence of gestational diabetes mellitus, gestational hypertension, preeclampsia, intrahepatic cholestasis of pregnancy, placenta previa, placental abruption, preterm premature rupture of membranes, placental adherence, postpartum haemorrhage, polyhydramnios, preterm labour, low birth weight, and small-for-date infant compared with spontaneously conceived births. Pregnancies conceived by intracytoplasmic sperm injection (ICSI) showed similar elevated complications, except some of the difference narrowed or disappeared. Singleton pregnancies or nulliparous pregnancies following ART still exhibited increased maternal and neonatal complications. Therefore, we conclude that pregnancies conceived following ART are at increased risks of antenatal complications, perinatal complications and poor neonatal outcomes, which may result from not only a higher incidence of multiple pregnancy, but also the manipulation involved in ART processes.
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Olszewska M, Wanowska E, Kishore A, Huleyuk N, Georgiadis AP, Yatsenko AN, Mikula M, Zastavna D, Wiland E, Kurpisz M. Genetic dosage and position effect of small supernumerary marker chromosome (sSMC) in human sperm nuclei in infertile male patient. Sci Rep 2015; 5:17408. [PMID: 26616419 PMCID: PMC4663790 DOI: 10.1038/srep17408] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 10/28/2015] [Indexed: 11/12/2022] Open
Abstract
Chromosomes occupy specific distinct areas in the nucleus of the sperm cell that may be altered in males with disrupted spermatogenesis. Here, we present alterations in the positioning of the human chromosomes 15, 18, X and Y between spermatozoa with the small supernumerary marker chromosome (sSMC; sSMC+) and spermatozoa with normal chromosome complement (sSMC−), for the first time described in the same ejaculate of an infertile, phenotypically normal male patient. Using classical and confocal fluorescent microscopy, the nuclear colocalization of chromosomes 15 and sSMC was analyzed. The molecular cytogenetic characteristics of sSMC delineated the karyotype as 47,XY,+der(15)(pter->p11.2::q11.1->q11.2::p11.2->pter)mat. Analysis of meiotic segregation showed a 1:1 ratio of sSMC+ to sSMC− spermatozoa, while evaluation of sperm aneuploidy status indicated an increased level of chromosome 13, 18, 21 and 22 disomy, up to 7 × (2.7 − 15.1). Sperm chromatin integrity assessment did not reveal any increase in deprotamination in the patient’s sperm chromatin. Importantly, we found significant repositioning of chromosomes X and Y towards the nuclear periphery, where both chromosomes were localized in close proximity to the sSMC. This suggests the possible influence of sSMC/XY colocalization on meiotic chromosome division, resulting in abnormal chromosome segregation, and leading to male infertility in the patient.
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Affiliation(s)
- Marta Olszewska
- Institute of Human Genetics, Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, 60-479 Poznan, Poland
| | - Elzbieta Wanowska
- Institute of Human Genetics, Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, 60-479 Poznan, Poland
| | - Archana Kishore
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh 15213, PA, USA
| | - Nataliya Huleyuk
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lysenko Str. 31a, 79000 Lviv, Ukraine
| | - Andrew P Georgiadis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh 15213, PA, USA
| | - Alexander N Yatsenko
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh 15213, PA, USA
| | - Mariya Mikula
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lysenko Str. 31a, 79000 Lviv, Ukraine
| | - Danuta Zastavna
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lysenko Str. 31a, 79000 Lviv, Ukraine
| | - Ewa Wiland
- Institute of Human Genetics, Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, 60-479 Poznan, Poland
| | - Maciej Kurpisz
- Institute of Human Genetics, Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, 60-479 Poznan, Poland
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12
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Coates A, Hesla JS, Hurliman A, Coate B, Holmes E, Matthews R, Mounts EL, Turner KJ, Thornhill AR, Griffin DK. Use of suboptimal sperm increases the risk of aneuploidy of the sex chromosomes in preimplantation blastocyst embryos. Fertil Steril 2015; 104:866-872. [DOI: 10.1016/j.fertnstert.2015.06.033] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 06/24/2015] [Accepted: 06/24/2015] [Indexed: 01/15/2023]
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13
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Shuai HL, Ye Q, Huang YH, Xie BG. Comparison of conventionalin vitrofertilisation and intracytoplasmic sperm injection outcomes in patients with moderate oligoasthenozoospermia. Andrologia 2014; 47:499-504. [PMID: 24811903 DOI: 10.1111/and.12291] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2014] [Indexed: 11/26/2022] Open
Affiliation(s)
- H.-L. Shuai
- Department of Obstetrics and Gynecology; the First Affiliated Hospital of Jinan University; Guangzhou China
| | - Q. Ye
- Department of Obstetrics and Gynecology; Pingxiang People's Hospital; Pingxiang China
| | - Y.-H. Huang
- Reproductive Medicine Center; the Affiliated Hospital of Hainan Medical College; Haikou China
| | - B.-G. Xie
- Reproductive Medicine Center; the Affiliated Hospital of Hainan Medical College; Haikou China
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14
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Xie BG, Huang YH, Zhu WJ, Jin S. Comparison of the Outcome of Conventional in vitro Fertilization and Intracytoplasmic Sperm Injection in Moderate Male Infertility from Ejaculate. Urol Int 2013; 94:111-6. [DOI: 10.1159/000353975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 06/25/2013] [Indexed: 11/19/2022]
Abstract
Objective: To evaluate whether couples with moderate male infertility should be treated with conventional in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). Patients and Methods: A total of 249 couples with moderate male infertility undergoing their first IVF/ICSI cycle were enrolled in the study. The couples were divided into two groups according to the results of semen analysis: moderate oligozoospermia (O group) and moderate oligoasthenozoospermia (OA group). Sibling oocytes were randomized into groups to be inseminated either by conventional IVF or ICSI. Fertilization rate, embryo quality, implantation rate, and clinical pregnancy rate were examined. Results: There was no difference in the fertilization, implantation, and pregnancy rates between conventional IVF and ICSI in either the O group or OA group (p > 0.05). Additionally, in the OA group, the good quality embryo rate was similar after IVF or ICSI (p > 0.05). However, in the O group, the good quality embryo rate was significantly higher after ICSI than after IVF (p < 0.05). Conclusions: Couples with moderate oligozoospermia or moderate oligoasthenozoospermia did not influence the major indices of IVF. Because of the uncertainties concerning the safety of ICSI, couples with moderate oligozoospermia or moderate oligoasthenozoospermia need not be subjected to this procedure.
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15
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Hierarchical radial and polar organisation of chromosomes in human sperm. Chromosome Res 2012; 20:875-87. [DOI: 10.1007/s10577-012-9323-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Revised: 10/29/2012] [Accepted: 10/31/2012] [Indexed: 01/06/2023]
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16
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Perdrix A, Travers A, Clatot F, Sibert L, Mitchell V, Jumeau F, Macé B, Rives N. Modification of chromosomal architecture in human spermatozoa with large vacuoles. Andrology 2012; 1:57-66. [DOI: 10.1111/j.2047-2927.2012.00016.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 07/05/2012] [Accepted: 07/06/2012] [Indexed: 11/28/2022]
Affiliation(s)
- A. Perdrix
- Biology Laboratory - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Rouen University Hospital; Rouen Cedex; France
| | - A. Travers
- Biology Laboratory - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Rouen University Hospital; Rouen Cedex; France
| | - F. Clatot
- Department of Oncology; Henry Becquerel Center; Rouen; France
| | - L. Sibert
- Biology Laboratory - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Rouen University Hospital; Rouen Cedex; France
| | - V. Mitchell
- Department of Reproductive Biology - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Lille University Medical Center; Lille; France
| | - F. Jumeau
- Department of Reproductive Biology - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Lille University Medical Center; Lille; France
| | - B. Macé
- Biology Laboratory - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Rouen University Hospital; Rouen Cedex; France
| | - N. Rives
- Biology Laboratory - CECOS; EA 4308 “Spermatogenesis and male gamete quality”; Rouen University Hospital; Rouen Cedex; France
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17
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Montjean D, Belloc S, Benkhalifa M, Dalleac A, Menezo Y. Sperm vacuoles are linked to capacitation and acrosomal status. Hum Reprod 2012; 27:2927-32. [DOI: 10.1093/humrep/des266] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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18
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Petridou ET, Sergentanis TN, Panagopoulou P, Moschovi M, Polychronopoulou S, Baka M, Pourtsidis A, Athanassiadou F, Kalmanti M, Sidi V, Dessypris N, Frangakis C, Matsoukis IL, Stefanadis C, Skalkidou A, Stephansson O, Adami HO, Kieler H. In vitro fertilization and risk of childhood leukemia in Greece and Sweden. Pediatr Blood Cancer 2012; 58:930-6. [PMID: 21618418 DOI: 10.1002/pbc.23194] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Accepted: 04/14/2011] [Indexed: 11/07/2022]
Abstract
BACKGROUND Cancer risk in children born after in vitro fertilization (IVF) remains largely unknown. We aimed to investigate risk of leukemia and lymphoma following IVF using two nationwide datasets. METHODS The hospital-based case-control study in Greece derived from the National Registry for Childhood Hematological Malignancies (1996-2008, 814 leukemia and 277 lymphoma incident cases with their 1:1 matched controls). The Swedish case-control study was nested in the Swedish Medical Birth Register (MBR) (1995-2007, 520 leukemia and 71 lymphoma cases with their 5,200 and 710 matched controls) with ascertainment of incident cancer cases in the National Cancer Register. Study-specific and combined odds ratios (OR) were estimated using conditional logistic regression, with adjustment for possible risk factors. RESULTS Nationwide studies pointed to similar size excess risk of leukemia following IVF, but to a null association between IVF and lymphoma. The proportion of leukemia cases conceived through IVF was 3% in Greece and 2.7% in Sweden; prevalence of IVF in matched controls was 1.8% and 1.6%, respectively. In combined multivariable analyses, the increased risk of leukemia was confined to age below 3.8 years (OR = 2.21; 95% confidence interval, CI: 1.27-3.85) and to acute lymphoblastic leukemia (ALL) (OR = 1.77; 95% CI: 1.06-2.95) with no sufficient evidence of excess risk for other leukemias (OR = 1.34; 95% CI: 0.38-4.69). Following IVF, OR for ALL was 2.58 (95% CI: 1.37-4.84) before age 3.8 and 4.29 (95% CI: 1.49-12.37) before age 2 years. CONCLUSIONS IVF seems to be associated with increased risk of early onset ALL in the offspring.
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Affiliation(s)
- Eleni Th Petridou
- Department of Hygiene, Epidemiology and Medical Statistics, Athens University Medical School, Athens, Greece.
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19
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Riel JM, Yamauchi Y, Huang TTF, Grove J, Ward MA. Short-term storage of human spermatozoa in electrolyte-free medium without freezing maintains sperm chromatin integrity better than cryopreservation. Biol Reprod 2011; 85:536-47. [PMID: 21593474 DOI: 10.1095/biolreprod.111.091322] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Previous attempts to maintain human spermatozoa without freezing were based on short-term storage in component-rich medium and led to fast decline in motility and increased incidence of chromosome breaks. Here we report a new method in which sperm are maintained without freezing in an electrolyte-free medium (EFM) composed of glucose and bovine serum albumin. Human sperm were stored in EFM or human tubal fluid medium (HTFM) or were cryopreserved, and their motility, viability, and DNA integrity were examined at different intervals. Cryopreservation led to significant decline in sperm motility and viability and induced DNA fragmentation. Sperm stored in EFM maintained motility and viability for up to 4 and 7 wk, respectively, much longer than sperm stored in HTFM (<2 and <4 wk, respectively). DNA integrity, assessed with comet assay, was also maintained significantly better in EFM than in HTFM. One-week storage in EFM yielded motility and viability similar to that of cryopreserved sperm, but DNA integrity was significantly higher, resembling that of fresh sperm. After several weeks of storage in EFM, sperm were able to activate oocytes, undergo chromatin remodeling, and form normal zygotic chromosomes after intracytoplasmic sperm injection. This study demonstrated that human spermatozoa can be stored in EFM without freezing for several weeks while maintaining motility, viability, and chromatin integrity and that 1-wk storage in EFM offers better protection of sperm DNA integrity than cryopreservation. Sperm storage in EFM may become a viable option for the physicians working in assisted reproduction technology clinics, which would avoid cryodamage.
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Affiliation(s)
- Jonathan M Riel
- Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
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20
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García-Vázquez FA, Ruiz S, Matás C, Izquierdo-Rico MJ, Grullón LA, De Ondiz A, Vieira L, Avilés-López K, Gutiérrez-Adán A, Gadea J. Production of transgenic piglets using ICSI-sperm-mediated gene transfer in combination with recombinase RecA. Reproduction 2010; 140:259-72. [PMID: 20501790 DOI: 10.1530/rep-10-0129] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Sperm-mediated gene transfer (SMGT) is a method for the production of transgenic animals based on the intrinsic ability of sperm cells to bind and internalize exogenous DNA molecules and to transfer them into the oocyte at fertilization. Recombinase-A (RecA) protein-coated exogenous DNA has been used previously in pronuclear injection systems increasing integration into goat and pig genomes. However, there are no data regarding transgene expression after ICSI. Here, we set out to investigate whether the expression of transgenic DNA in porcine embryos is improved by recombinase-mediated DNA transfer and if it is possible to generate transgenic animals using this methodology. Different factors which could affect the performance of this transgenic methodology were analyzed by studying 1) the effect of the presence of exogenous DNA and RecA protein on boar sperm functionality; 2) the effect of recombinase RecA on in vitro enhanced green fluorescent protein (EGFP)-expressing embryos produced by ICSI or IVF; and 3) the efficiency of generation of transgenic piglets by RecA-mediated ICSI. Our results suggested that 1) the presence of exogenous DNA and RecA-DNA complexes at 5 microg/ml did not affect sperm functionality in terms of motility, viability, membrane lipid disorder, or reactive oxygen species generation; 2) EGFP-expressing embryos were obtained with a high efficiency using the SMGT-ICSI technique in combination with recombinase; however, the use of IVF system did not result in any fluorescent embryos; and 3) transgenic piglets were produced by this methodology. To our knowledge, this is the first time that transgenic pigs have been produced by ICSI-SGMT and a recombinase.
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Affiliation(s)
- Francisco A García-Vázquez
- Departamento de Fisiología, Facultad de Veterinaria Departmento de Biología Celular e Histología, Facultad de Medicina, Universidad de Murcia, Murcia, Spain.
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21
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Jones EL, Mudrak O, Zalensky AO. Kinetics of human male pronuclear development in a heterologous ICSI model. J Assist Reprod Genet 2010; 27:277-83. [PMID: 20221683 DOI: 10.1007/s10815-010-9402-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2010] [Accepted: 02/19/2010] [Indexed: 10/19/2022] Open
Abstract
PURPOSE To evaluate human sperm nuclear chromatin decondensation in a heterologous ICSI system using hamster ova injected with human sperm. MATERIALS AND METHODS Frozen hamster oocytes were injected with Triton X-100 treated sperm and fixed at different time points post ICSI. Oocytes injected with non-treated sperm served as controls. Male pronuclear decondensation was evaluated after staining with DAPI. RESULTS Sperm cells with partially destroyed membranes and depletion of the acrosome decondense more rapidly and to a greater extent than membrane/acrosome intact cells. Marked variability in pronuclear size was observed for any time point post ICSI, which most probably reflects the heterogeneity in the mature human sperm population. CONCLUSION Remodeling of male gamete nuclei in this heterologous ICSI mimics events that occur during natural fertilization in humans and therefore this approach may be used for studies of human sperm chromosomes transformations.
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Affiliation(s)
- Estella L Jones
- The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, VA 23507, USA
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22
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Evaluation of human sperm function after being cryopreserved within the zona pellucida. Fertil Steril 2009; 92:1002-1008. [DOI: 10.1016/j.fertnstert.2008.07.1737] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 07/05/2008] [Accepted: 07/15/2008] [Indexed: 11/20/2022]
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23
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Safarinejad MR, Kolahi AA, Iravani S. Evaluation of semen variables, sperm chromosomal abnormalities and reproductive endocrine profile in patients with chronic hepatitis C. BJU Int 2009; 105:79-86. [PMID: 19594736 DOI: 10.1111/j.1464-410x.2009.08720.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate reproductive endocrine profile, sperm chromosomal abnormalities, and semen quality in patients with chronic hepatitis C. PATIENTS, SUBJECTS AND METHODS In all, 82 patients with chronic hepatitis C, aged 18-60 years, were recruited for the study; 76 age-matched healthy male volunteers served as controls. All participants provided a medical history and had a complete physical examination and routine semen analysis. Two blood samples were drawn from each participant at 15-min intervals to determine the resting levels of luteinizing-hormone (LH), follicle-stimulating hormone (FSH), prolactin, testosterone, oestradiol, and sex hormone-binding globulin. The hypothalamus-pituitary-testis axis was assessed using the gonadotrophin-releasing hormone (GnRH) test. All participants also received an injection of human chorionic gonadotrophin (hCG) and serum testosterone was determined before the hCG injection and on the third day afterwards. Conventional karyotype analysis and triple-colour fluorescence in situ hybridization for chromosomes X, Y and 18 were conducted in all patients and controls. RESULTS The mean basal serum levels for LH, FSH, and testosterone in patients with hepatitis C was significantly lower than the mean for normal controls (P = 0.01). The injection of GnRH analogue did not yield significantly higher FSH and LH levels in the patients than in normal controls (P = 0.001). In patients with chronic hepatitis C, the mean total sperm count, motility and normal morphology was significantly lower than in controls (P = 0.001). There was a significantly greater frequency of disomy in men with chronic hepatitis C than controls for chromosomes 18, X, and Y (P = 0.01). CONCLUSIONS Patients with chronic hepatitis C are at risk of showing sperm chromosomal abnormalities, the incidence of which is higher in patients with more advanced disease. Hypogonadotrophic hypogonadism is caused by the selective loss of pituitary gonadotrophin function. Further studies are needed to replicate our results.
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Affiliation(s)
- Mohammad Reza Safarinejad
- Urology and Nephrology Research Center, Faculty of Medicine, Shahid Beheshti University (MC), Tehran, Iran.
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24
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Abstract
Ever since its introduction in clinical practice more than 10 years ago, intracytoplasmic sperm injection (ICSI) has been the subject of ongoing debate regarding its indications and safety. ICSI is hyped because of its potential to give couples with severe male factor infertility a chance to conceive, and because of its apparently low fertilization failure rate compared with 'classic' in vitro fertilization (IVF). Concerns about ICSI are related to technical, biological and genetic hazards. ICSI has been branded 'the ultimate rape of the oocyte', as the oocyte membrane is mechanically pierced, appearing to bypass all biological and genetic selection. ICSI has been linked in a number of reports to an increased incidence of chromosomal anomalies, congenital abnormalities and perinatal hazards in offspring conceived with this technique. The etiology of the increased risk of chromosomal anomalies in ICSI offspring, especially sex-chromosome anomalies, is thought to be partly multifactorial, partly andrological, related to paternal karyotypic abnormalities and/or abnormal sperm. The majority of studies on ICSI and IVF offspring have, setting aside inconsistencies in methodology and classification, not shown significant differences between the two techniques in terms of congenital abnormalities, however, compared to naturally conceived offspring there does show an increased risk. This risk is attributed mainly to parental factors such as maternal age, poor sperm quality and infertility as an independent risk factor. Perinatal hazards may include low birth weight and perinatal mortality. Behavioural and psychological development is carefully monitored in ICSI and IVF children with no significant differences to the development of naturally conceived children, but many factors are involved including demographics. Follow-up studies are essential to the technique of ICSI. It is our duty to inform patients of the concerns and benefits to this treatment, based on the latest data available.
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Affiliation(s)
- Willem Verpoest
- Centre for Reproductive Medicine, Dutch-speaking Free University of Brussels, Belgium.
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25
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Tateno H. Possible causal factors of structural chromosome aberrations in intracytoplasmic sperm injection of the mouse. Reprod Med Biol 2009; 8:89-95. [PMID: 29699313 DOI: 10.1007/s12522-009-0017-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Accepted: 04/19/2009] [Indexed: 11/28/2022] Open
Abstract
Incidence of structural chromosome aberrations in mouse one-cell embryos produced by intracytoplasmic sperm injection (ICSI) with mature epididymal spermatozoa were influenced by sperm incubation medium and time. When spermatozoa were incubated in bicarbonate-buffered TYH for ≤0.5 h, the embryo aberration rates were significantly higher than in vitro fertilization (IVF) embryos. However, after the incubation of spermatozoa in the same medium for ≥2 h, the aberration rates were close to the IVF embryo level. When spermatozoa were incubated in bicarbonate-buffered mCZB, hepes-buffered H-TYH and H-mCZB, and phosphate-buffered PB1, the increased incidences of aberrations were observed at any incubation time. In the case of sperm incubation in H-TYH, H-mCZB and PB1, the aberration rates increased in a time-dependent manner. Chromosome aberrations generated by ICSI were transmissible to offspring. On the other hand, the aberration rate in embryos derived from testicular spermatozoa was independent of the medium type and incubation time. Thus, the incubation media appears to have no effect on sperm chromatin. TYH can effectively induce capacitation and acrosome reaction, while H-TYH, H-mCZB and PB1 never induce these spermatozoal events. It is probable that the cholesterol-rich plasma membrane and intact acrosome injected into the ooplasm affect sperm chromatin remodeling, thus resulting in the generation of chromosome damage in ICSI embryos.
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Affiliation(s)
- Hiroyuki Tateno
- Department of Biological Sciences Asahikawa Medical College 078-8510 Asahikawa Japan
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26
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Ludwig A, Katalinic A, Thyen U, Sutcliffe AG, Diedrich K, Ludwig M. Neuromotor development and mental health at 5.5 years of age of singletons born at term after intracytoplasmatic sperm injection ICSI: results of a prospective controlled single-blinded study in Germany. Fertil Steril 2009; 91:125-32. [DOI: 10.1016/j.fertnstert.2007.11.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 11/13/2007] [Accepted: 11/13/2007] [Indexed: 11/29/2022]
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27
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Basatemur E, Sutcliffe A. Follow-up of children born after ART. Placenta 2008; 29 Suppl B:135-40. [PMID: 18790325 DOI: 10.1016/j.placenta.2008.08.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 08/13/2008] [Accepted: 08/13/2008] [Indexed: 01/10/2023]
Abstract
Assisted reproductive therapies (ART), namely in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI), have become widely used in the treatment of human infertility. Children conceived using ART represent a substantial proportion of the population. Follow-up of these children is necessary in order to evaluate the risks of infertility treatment upon subsequently conceived offspring. In recent years there has been considerable work in this field. This review summarises current evidence regarding the health of children conceived following ART, encompassing neonatal outcomes, the risk of congenital malformations, neurodevelopmental outcome, physical health, psychosocial well being, and the risk of cancer. The main risks for the future well being of ART children remain multiple pregnancies and low birth weight. Evidence regarding the outcome of singletons born at term following ART is generally reassuring. It is essential that follow-up of ART children continues as they progress through adolescence into adulthood.
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Affiliation(s)
- E Basatemur
- Adolescent and General Paediatric Unit, Institute of Child Health, University College London, 250 Euston Road, 6th Floor, London NW1 2PQ, UK
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28
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Olszewska M, Wiland E, Kurpisz M. Positioning of chromosome 15, 18, X and Y centromeres in sperm cells of fertile individuals and infertile patients with increased level of aneuploidy. Chromosome Res 2008; 16:875-90. [PMID: 18696233 DOI: 10.1007/s10577-008-1246-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 06/09/2008] [Accepted: 06/09/2008] [Indexed: 11/28/2022]
Abstract
Evidence has been accumulating that individual chromosomes in human sperm cells occupy defined, non-random positions. Our earlier study suggested that abnormal spermatogenesis in carriers of reciprocal translocations was reflected in the changes in the intranuclear topology of sperm chromosomes. The purpose of this study was to determine whether the increased level of disomy of sperm chromosomes may be the factor that can disturb topology within the sperm nuclei. The results obtained indicated that within the sperm nuclei of fertile individuals the centromeres of chromosomes 15, 18, X and Y were localized in a small area that may be a fragment of the chromocentre. When compared with the intranuclear positions of the same chromosomes in sperm nuclei of infertile patients with an increased level of aneuploidy, some disturbances in the centromere area were found. In disomic sperm cells (n + 1) centromeres 15,15 or 18,18 or YY (but not X,X) had a shifted average longitudinal position in comparison with normal sperm cells (n = 23).
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Affiliation(s)
- Marta Olszewska
- Institute of Human Genetics, Polish Academy of Sciences, ul. Strzeszyńska 32, 60-479, Poznań, Poland
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29
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Wiland E, Zegało M, Kurpisz M. Interindividual differences and alterations in the topology of chromosomes in human sperm nuclei of fertile donors and carriers of reciprocal translocations. Chromosome Res 2008; 16:291-305. [PMID: 18256895 DOI: 10.1007/s10577-007-1194-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2007] [Revised: 07/11/2007] [Accepted: 07/11/2007] [Indexed: 11/26/2022]
Abstract
Recently it has been shown that the nucleus of the human spermatozoon appears to possess a specific architecture. The current prevailing view is that spatial organization of the male genome contains information critical for the spermatozoon's function as well as for early embryonic development. The purpose of this study was to determine whether there are alterations in intranuclear localization of centromeres in spermatozoa of chromosomes associated with particular reciprocal chromosome translocations (RCT). We analyzed the longitudinal and spatial localization of centromeres of selected chromosomes in sperm nuclei of four control males with normal karyotypes as well as in six carriers of reciprocal chromosome translocations: t(1;7), t(7;2), t(7;13), t(7;9), t(9;14), and t(4;13). Our study revealed that chromosomes with translocations may have shifted their intranuclear localization and that these translocations may influence the localization of other chromosomes in sperm nuclei. The chromocenter in sperm nuclei of translocation carriers was widened toward the apical side in comparison with chromocenter sites visible in control males. Our study also revealed interindividual differences in the localization of the Y chromosome centromere in the chromocenter area of sperm from fertile individuals.
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MESH Headings
- Adult
- Cell Nucleus/genetics
- Centromere/metabolism
- Chromosomes, Human/metabolism
- Chromosomes, Human/ultrastructure
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 14
- Chromosomes, Human, Pair 2
- Chromosomes, Human, Pair 4
- Chromosomes, Human, Pair 7
- Chromosomes, Human, Pair 9
- Chromosomes, Human, Y/metabolism
- Chromosomes, Human, Y/ultrastructure
- Fertility/genetics
- Genetic Heterogeneity
- Heterozygote
- Humans
- Male
- Models, Biological
- Spermatozoa/ultrastructure
- Tissue Donors
- Translocation, Genetic
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Affiliation(s)
- Ewa Wiland
- Institute of Human Genetics, Polish Academy of Sciences, ul. Strzeszyńska 32, 60-479, Poznań, Poland
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30
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Zalensky A, Zalenskaya I. Organization of chromosomes in spermatozoa: an additional layer of epigenetic information? Biochem Soc Trans 2007; 35:609-11. [PMID: 17511662 DOI: 10.1042/bst0350609] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Elaborate non-random organization of human sperm chromosomes at different structural levels, starting from the DNA packing by protamines up to the higher-order chromosome configuration and nuclear positioning of chromosome territories, has been discovered. Here, we put forward a hypothesis that the unique genome architecture in sperm provides a mechanism for orchestrated unpacking and ordered activation of the male genome during fertilization, thus offering an additional level of epigenetic information that will be deciphered in the descendant cells.
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Affiliation(s)
- A Zalensky
- The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, VA 23518, USA.
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31
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Wilson TJ, Lacham-Kaplan O, Gould J, Holloway A, Bertoncello I, Hertzog PJ, Trounson A. Comparison of mice born after intracytoplasmic sperm injection with in vitro fertilization and natural mating. Mol Reprod Dev 2007; 74:512-9. [PMID: 16998805 DOI: 10.1002/mrd.20644] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The procedures of in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) are routinely used in modern medicine to overcome infertility and, in animal husbandry, to propagate lines with compromised fertility. However, there remains concern that manual selection and injection of whole sperm into oocytes could contribute to pre- and postnatal developmental defects. To address this, we have used gene expression profiling and immunophenotyping to characterize offspring generated by these procedures. We used gametes from glutathione peroxidase 1 knockout (Gpx1-/-) mice as a sensitized screen responsive to oxidative stress from artificial reproduction technologies (ART). There were no differences between IVF and ICSI derived offspring in gene expression patterns, and minor differences in hematopoietic parameters. Furthermore there were only minor differences between these IVF and ICSI pups and those derived from natural mating. These data demonstrate for the first time in that there is no significant phenotypic affects of ICSI when compared to IVF and we identified a relatively minor influence of the artificial fertilization methods on phenotype of offspring compared with natural mating. These observations would support the use of ICSI for derivation of mutant mouse lines and may be of some importance for the use of this technique in human ART.
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Affiliation(s)
- Trevor J Wilson
- Centre for Functional Genomics and Human Disease, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia
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Dinnyes A, Liu J, Nedambale TL. Novel gamete storage. Reprod Fertil Dev 2007; 19:719-31. [PMID: 17714626 DOI: 10.1071/rd07035] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2007] [Accepted: 06/08/2007] [Indexed: 11/23/2022] Open
Abstract
The aim of this review is to outline recent advances in gamete storage that are beneficial for rescuing endangered species or for the breeding of companion animals. Much more information is available on the technical resolutions and practical applications of sperm cryopreservation in various species than of female gametes, reproductive tissues or organs. Mammalian sperm cryopreservation often works relatively efficiently; however, the ability of female gametes to be cryopreserved and still be viable for fertilisation is also essential for rescuing endangered species. For a proper evaluation of gamete cryopreservation possibilities in a given species, it is essential to understand the basic mechanism affecting the survival of cryopreserved cells, the technical and physical limitations, the available techniques and the new avenues to resolve the specific problems in that species. This paper is aimed to provide some help for this process. The limited length of this paper resulted in the omission of information on many important areas, including most data on teleosts, amphibian and insect cryopreservation.
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Affiliation(s)
- A Dinnyes
- Biotalentum Ltd, Aulich L. 26, Godollo 2100, Hungary.
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Ludwig AK, Sutcliffe AG, Diedrich K, Ludwig M. Post-neonatal health and development of children born after assisted reproduction: A systematic review of controlled studies. Eur J Obstet Gynecol Reprod Biol 2006; 127:3-25. [PMID: 16621225 DOI: 10.1016/j.ejogrb.2006.02.009] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2006] [Accepted: 02/13/2006] [Indexed: 11/21/2022]
Abstract
Long-term follow-up studies on the health and the development of children conceived by assisted reproduction (ART) are mandatory to assess the safety of ART. Meanwhile, different aspects of health of these children have been studied. To put these results together, we performed a systematic review of these publications. A Pubmed search and a hand-search of the abstract books from the annual meeting of the European Society of Human Reproduction and Embryology and the American Society of Reproductive Medicine were performed for controlled studies on the developmental outcome of children after ART, which include a matching for plurality of gestation. Regarding general health, growth, mental and psychomotor development IVF children do not differ from spontaneously conceived (SC) children. An increased need for surgical interventions may be due to an increase in the malformation rate. However, a lower birth weight and lower gestational age compared to matched controls may contribute to some health problems observed. The increased risk of neurological problems found in some large registry-based studies can partly be explained by the higher frequency of twins born, by low birth weight, and by low gestational age also found in singletons. But an effect of IVF, the parents' infertility or other factors not adjusted for in the studies cannot be excluded. In addition to this reporting bias caused by concerned parents cannot be excluded, either. To conclude, children born after assisted reproductive techniques are generally healthy and are developmentally similar to children born after SC. However, low birth weight and prematurity contributes to health care problems. An increase of neurological problems by IVF cannot be excluded. Further prospective studies on the neurological outcome are needed.
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Affiliation(s)
- A K Ludwig
- Department of Gynaecology and Obstetrics, University of Schleswig-Holstein, Campus Lübeck, Germany.
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Ajduk A, Yamauchi Y, Ward MA. Sperm chromatin remodeling after intracytoplasmic sperm injection differs from that of in vitro fertilization. Biol Reprod 2006; 75:442-51. [PMID: 16775225 DOI: 10.1095/biolreprod.106.053223] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Intracytoplasmic sperm injection (ICSI) is a popular method used in assisted conception, and live offspring have been born from a variety of species, including humans. In ICSI, sperm chromatin is introduced into the oocyte together with the acrosome, a structure that does not enter the oocyte during normal fertilization. We compared sperm chromatin remodeling, the potential of embryos to develop in vitro, and DNA synthesis in mouse embryos obtained from in vitro fertilization (IVF) and ICSI. We also tested whether sperm pretreatment prior to ICSI (i.e., capacitation, acrosome reaction, membrane removal, and reduction of disulfide bonds in protamines) facilitates chromatin remodeling and affects embryo development. Sperm chromatin was examined on air-dried, Giemsa-stained preparations at 30-min intervals for up to 4.5 h postfertilization. In all experimental groups, the oocytes underwent activation and formed pronuclei with similar rates. However, the dynamics of sperm chromatin remodeling in ICSI and IVF embryos varied. In ICSI, chromatin remodeling was more asynchronous than in IVF. Sperm capacitation prior to injection enhanced remodeling asynchrony and resulted in delayed pronuclei formation and DNA synthesis. The removal of the acrosome prior to injection with calcium ionophore A23187 but not with detergent Triton X-100 allowed more synchronous chromatin remodeling, timely DNA synthesis, and good embryo development. Our data have significance for the refinement of the molecular and biologic mechanisms associated with ICSI for current and future applications.
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Affiliation(s)
- Anna Ajduk
- Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii 96822, USA
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Mudrak O, Tomilin N, Zalensky A. Chromosome architecture in the decondensing human sperm nucleus. J Cell Sci 2006; 118:4541-50. [PMID: 16179611 PMCID: PMC1409709 DOI: 10.1242/jcs.02581] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Whereas recent studies demonstrated a well-defined nuclear architecture in human sperm nuclei, little is known about the mode of DNA compaction above the elementary structural unit of nucleoprotamine toroids. Here, using fluorescence in-situ hybridization (FISH) with arm-specific DNA probes of chromosomes 1, 2 and 5, we visualized arm domains and established hierarchical levels of sperm chromatin structures. The compact chromosome territories, which in sperm have a preferred intranuclear localization, have an extended conformation represented by a 2000 nm chromatin fiber. This fiber is composed of a 1000 nm chromatin thread bent at 180 degrees near centromere. Two threads of 1000 nm, representing p-arm and q-arm chromatin, run in antiparallel fashion and join at the telomeres. Each 1000 nm thread, in turn, resolves into two rows of chromatin globules 500 nm in diameter interconnected with thinner chromatin strands. We propose a unified comprehensive model of chromosomal and nuclear architecture in human sperm that, as we suggest, is important for successful fertilization and early development.
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Affiliation(s)
- Olga Mudrak
- The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, VA 23507, USA
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Sifer C, Sasportes T, Barraud V, Poncelet C, Rudant J, Porcher R, Cedrin-Durnerin I, Martin-Pont B, Hugues JN, Wolf JP. World Health Organization grade 'a' motility and zona-binding test accurately predict IVF outcome for mild male factor and unexplained infertilities. Hum Reprod 2005; 20:2769-75. [PMID: 15958402 DOI: 10.1093/humrep/dei118] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The aim of this study was to determine the pronostic value of a sperm-zona pellucida (ZP) binding assay, combined with World Health Organization (WHO) grade 'a' sperm motility on the day of the IVF attempt, to predict sperm fertilizing ability in unexplained and moderate male factor infertilities. METHODS In total, 84 couples (64 unexplained infertility; 20 male factor) underwent both a sperm-ZP binding assay and an IVF attempt, irrespective of the test's result. The test was negative when grade 'a' motility was #5% and/or the ZP binding index was <0.7. Fertilization and pregnancy rates were related to the test's results. RESULTS Thirty-one patients had a negative test (group N) and 53 a positive test (group P). A difference was observed concerning the fertilization rate [median (range): 0 (0-75%) versus 50 (0-100%); P = 0.0001] and the number of cycles with fertilization rate <20% (65 versus 23%; P = 0.0002) between groups N and P respectively. In the group of unexplained and male factor infertilities, the test showed a sensitivity of 83 and 60%, specificity of 50 and 90%, positive predictive value of 76 and 86%, and negative predictive value of 61 and 69% respectively. CONCLUSION Sperm-ZP binding test, combined with WHO grade 'a' motility assessment, is relevant to prevent IVF fertilization failures in unexplained infertility and, most particularly, in moderate male factor infertility.
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Affiliation(s)
- C Sifer
- Service d'Histologie-Embryologie-Cytogénétique, Laboratoire de Biologie de la Reproduction, Assistance Publique - Hôpitaux de Paris, France
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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.
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Affiliation(s)
- Yasser Orief
- Department of Obstetrics and Gynecology, Shatby University Hospital, Alexandria University, Egypt
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Abstract
In human spermatozoa, the arrangement of chromosomes is non-random. Characteristic features are association of centromeres in the interior chromocenter and peripheral location of telomeres. In this paper, we have investigated the highest level of order in DNA packing in sperm--absolute and relative intranuclear chromosome positioning. Asymmetrical nuclear shape, existence of a defined spatial marker, and the haploid complement of chromosomes facilitated an experimental approach using in situ hybridization. Our results showed the tendency for non-random intranuclear location of individual chromosome territories. Moreover, centromeres demonstrated specific intranuclear position, and were located within a limited area of nuclear volume. Additionally, the relative positions of centromeres were non-random; some were found in close proximity, while other pairs showed significantly greater intercentromere distances. Therefore, a unique and specific adherence may exist between chromosomes in sperm. The observed chromosome order is discussed in relation to sperm nuclei decondensation, and reactivation during fertilization.
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Affiliation(s)
- Irina A Zalenskaya
- The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, VA 23507-1627, USA
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Greaves IK, Rens W, Ferguson-Smith MA, Griffin D, Marshall Graves JA. Conservation of chromosome arrangement and position of the X in mammalian sperm suggests functional significance. Chromosome Res 2004; 11:503-12. [PMID: 12971725 DOI: 10.1023/a:1024982929452] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We used chromosome painting to show directly that chromosomes occupy fixed positions in the nuclei of mammal but not chicken sperm. We found that the positions of homologous chromosomes are conserved in sperm of two marsupial species that diverged 50-60 million years ago. We also discovered that the X chromosome lies in the region that makes first contact with the egg in marsupial and monotreme mammals, as well as eutherians, and suggest that this position may be related to its propensity for inactivation, and its high rate of loss from ICSI embryos. We propose that nuclear architecture in sperm is important for spatial chromatin differentiation and normal development of the fertilized egg, and evolved along with mammal-specific regulatory systems such as X inactivation and genomic imprinting.
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Affiliation(s)
- Ian K Greaves
- Research School of Biological Sciences, The Australian National University, Canberra, ACT 2601, Australia
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41
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Terada Y, Nakamura SI, Morita J, Tachibana M, Morito Y, Ito K, Murakami T, Yaegashi N, Okamura K. Use of Mammalian Eggs for Assessment of Human Sperm Function: Molecular and Cellular Analyses of Fertilization by Intracytoplasmic Sperm Injection. Am J Reprod Immunol 2004; 51:290-3. [PMID: 15212682 DOI: 10.1111/j.1600-0897.2004.00158.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
PROBLEMS Intracytoplasmic sperm injection (ICSI ) has been described as the 'cure' for male sterility because a single sperm can now be directly introduced into an egg with some chance of pregnancy. While ICSI has revolutionized the practice of assisted reproductive techniques (ART), there are few molecular and cellular studies about its safety and efficacy. Even by using ICSI, fertilization in humans succeeds only if the sperm effectively accomplishes a number of tasks including 'post-ICSI events' in fertilization. To assess the function of human sperm after ICSI, we used heterologous ICSI with human sperm into animal eggs. Egg activation, sperm decondensation and sperm centorosomal function were examined in sperm from fertile men and infertile patients. METHODS Sperm from fertile men and infertile patients were injected into hamster, rabbit and bovine eggs by Piezo micromanipulator, and studied in decondensation of sperm nuclei, egg activation and microtubule organization. RESULTS Decondensation human sperm head following ICSI into hamster eggs occurred initially form basal lesion, and apical portion of sperm nuclei which is surrounded by acrosome and perinuclear theca, still condensed in early pronuclear stage. Radial array of microtubules from sperm centrosome 'sperm aster' which is essential for pronuclear movement was observed in 30% rabbit eggs following ICSI with human sperm. By heterologous ICSI system with fertile human sperm and bovine eggs, 83.3% of eggs was activated and 60% eggs had sperm aster, indicating that bovine Piezo ICSI system is appropriate for assessing human sperm oocyte activation ability and human sperm centrosomal function. Oocyte activation and sperm centrosomal function were significantly low in sperm from men with globozoospermia and men with dysplasia of fibrous sheath. CONCLUSION These assays indicate differences of the process of fertilization between in vitro fertilization and ICSI, and reflect the human sperm function especially for the 'post-ICSI events' in fertilization. More molecular and cellular analyses in fertilization by ICSI are needed for improvement of ART.
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Affiliation(s)
- Yukihiro Terada
- Department of Obstetrics and Gynecology, Tohoku University School of Medicine, Sendai, Miyagi, Japan.
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Hewitson L, Simerly CR, Schatten G. ICSI, male pronuclear remodeling and cell cycle checkpoints. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2004; 518:199-210. [PMID: 12817688 DOI: 10.1007/978-1-4419-9190-4_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- Laura Hewitson
- Pittsburgh Development Center, Magee-Womens Research Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA.
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43
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Terada Y, Nakamura SI, Simerly C, Hewitson L, Murakami T, Yaegashi N, Okamura K, Schatten G. Centrosomal function assessment in human sperm using heterologous ICSI with rabbit eggs: A new male factor infertility assay. Mol Reprod Dev 2004; 67:360-5. [PMID: 14735497 DOI: 10.1002/mrd.20024] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Sperm centrosomal function was assessed by immunocytochemical analysis after the injection of human sperm into mature rabbit eggs. Three hours after intracytoplasmic sperm injection (ICSI), an astral microtubule array from the base of the human sperm was observed in the rabbit eggs. This sperm aster expanded in the egg cytoplasm, concomitant with pronuclear formation, and a dense microtubule array was organized at the time of pronuclear centration. Using fertile donor sperm, the sperm aster formation rate at 3 hr after ICSI was 35.0 +/- 1.5%. Using sperm from infertile patients, the average aster formation rate was lower (25.4 +/- 14.8%, P<0.05). Among infertile cases, there was no correlation between sperm aster formation rates and conventional parameters of semen analysis. However, the sperm aster formation rate correlated with the embryonic cleavage rate following human in vitro fertilization (IVF). These data suggest that this assay reflects sperm function during embryonic development after sperm entry and that reproductive success during the first cell cycle requires a functional sperm centrosome. Furthermore, sperm centrosomal function cannot be predicted from conventional parameters of semen analysis. We propose that insufficient centrosomal function could be the cause of certain cases of idiopathic infertility. These assays may lead to the discovery of new types of infertility, which have previously been treated as "unexplained infertility," and may also lead to the treatment of infertility incurable even by ICSI. Consequently, an accurate and relevant assay to help assure couples of the success of fertilization is warranted, perhaps prior to ICSI therapy.
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Affiliation(s)
- Yukihiro Terada
- Department of Obstetrics and Gynecology, Tohoku University School of Medicine, Sendai, Miyagi, Japan.
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Sutovsky P, Manandhar G, Wu A, Oko R. Interactions of sperm perinuclear theca with the oocyte: implications for oocyte activation, anti-polyspermy defense, and assisted reproduction. Microsc Res Tech 2003; 61:362-78. [PMID: 12811742 DOI: 10.1002/jemt.10350] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Perinuclear theca (PT) is the cytoskeletal coat of mammalian sperm nucleus that is removed from the sperm head at fertilization. PT harbors the sperm borne, oocyte-activating factor (SOAF), a yet-to-be-characterized substance responsible for triggering the signaling cascade of oocyte activation, thought to be dependent on intra-oocyte calcium release. The present article reviews the current knowledge on the biogenesis and molecular composition of sperm PT. Possible functions of sperm PT during natural and assisted fertilization, and in the initiation of embryonic development are discussed. Furthermore, evidence is provided that SOAF is transferred from the sperm PT to oocyte cytoplasm through the internalization and rapid solubilization of the post-acrosomal PT. It is shown that during natural fertilization the sperm PT dissolves in the oocyte cytoplasm concomitantly with sperm nuclear decondensation and the initiation of pronuclear development. SOAF activity is preserved in the differentially extracted sperm heads only if the integrity of PT is maintained. After intracytoplasmic sperm injection (ICSI), activation occurs only in those oocytes in which the injected spermatozoon displays complete or partial dissolution of PT. In the latter case, the residual PT of the sub-acrosomal and/or post-acrosomal sperm region may persist on the apical surface of the sperm nucleus/male pronucleus and may cause a delay or arrest of zygotic development. We propose that the sperm PT harbors SOAF in the post-acrosomal sheath, as this is the first part of the sperm cytosol to enter the oocyte cytoplasm and its disassembly appears sufficient to initiate the early events of oocyte activation. Dissolution of the sub-acrosomal part of the PT, on the other hand, appears necessary to insure complete DNA decondensation in the internalized sperm nucleus and initiate DNA synthesis of both pronuclei. The release of the SOAF from the sperm head into oocyte cytoplasm at fertilization ultimately leads to the activation of oocyte mechanism including the completion of the meiotic cell cycle, pronuclear development and anti-polyspermy defense.
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Affiliation(s)
- Peter Sutovsky
- Department of Animal Sciences, College of Agriculture, Food and Natural Resources, University of Missouri-Columbia, Missouri 65211-5300, USA.
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45
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Tanphaichitr N, Haebe J, Leader A, Carmona E, Harris JD, da Silva SM, Antunes TT, Chakrabandhu K, Léveillé MC. Towards a more precise assay of sperm function in egg binding. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2003; 25:461-70. [PMID: 12806448 DOI: 10.1016/s1701-2163(16)30308-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Historically, the treatment of severe male factor infertility has relied on donor sperm insemination. A decade ago the option of treating severe male factor infertility with partner sperm became a viable alternative. With the introduction of intracytoplasmic sperm injection (ICSI) in conjunction with in vitro fertilization (IVF), only men who produce no sperm are denied the option of fathering their own children. The use of ICSI has been extended to couples with mild male factors. Despite the known genetic risks (both inherent and de novo) of ICSI to offspring, couples with male factors as part of their infertility problem often prefer ICSI to standard IVF, due to apprehension that their sperm might not otherwise succeed in fertilization. This apprehension would be alleviated if an assay for the egg binding capability of human sperm were available. We examine here the possibility that recombinant human zona pellucida 3 (rec hZP3), the primary sperm receptor sulfoglycoprotein of the egg zona pellucida (ZP), be used as a human ZP surrogate for assessing sperm ability to bind to the ZP. Unlike human eggs, which cannot be obtained for this purpose, rec hZP3 can be produced in quantity. An efficient assay can be established by incubating sperm with rec hZP3 coated to a microwell plate. Infertile men with sperm having ability to bind to rec hZP3 can be advised to select standard IVF or intrauterine insemination, which have fewer genetic and medical risks.
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Affiliation(s)
- Nongnuj Tanphaichitr
- Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, ON, Canada
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46
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Terada Y, Nakamura S, Morita J, Simerly C, Hewitson L, Murakami T, Yaegashi N, Schatten G, Okamura K. Intracytoplasmic sperm injection: stiletto conception or a stab in the dark. ARCHIVES OF ANDROLOGY 2003; 49:169-77. [PMID: 12746095 DOI: 10.1080/01485010390196760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
To describe the importance of molecular and cellular analyses in intracytoplasmic sperm injection (ICSI) the authors review the literature on biological challenges in ICSI and associated techniques. Several matters can be proposed in molecular and cellular challenges in ICSI for safety and efficacy: (1) a reliable and convenient animal model for understanding the molecular and cellular basis of human ICSI must be established, and molecular and cellular analysis of the first cell cycle of human fertilization should be better understood; (2) a proper assay for human sperm function that contributes to the indication for ICSI should be developed; and (3) de novo and transmitted genetic security in ICSI should be examined.
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Affiliation(s)
- Y Terada
- Department of Obstetrics and Gynecology, Tohoku University School of Medicine, Sendai, Japan.
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47
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Manandhar G, Toshimori K. Fate of postacrosomal perinuclear theca recognized by monoclonal antibody MN13 after sperm head microinjection and its role in oocyte activation in mice. Biol Reprod 2003; 68:655-63. [PMID: 12533432 DOI: 10.1095/biolreprod.102.006098] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Monoclonal antibody (mAb) MN13 labels mouse sperm head postacrosomal perinuclear theca (PT), which is possibly involved in oocyte activation during fertilization. The antigenic site is expressed after mild sonication followed by treatment with dithiothreitol (DTT) or heat (45 degrees C), and is visible as a thick band in the postacrosomal region. The presence of protease inhibitors in the sonication medium suppresses the exposure of MN13 epitope (MN13p), suggesting the involvement of a proteolytic reaction in this process. Spermatozoa do not express MN13p after the induction of acrosome exocytosis by Ca(2+) ionophore, zona binding, or during zona penetration, a strategy that ensures safe delivery of postacrosomal PT proteins to oocytes after fusion. MN13 labeling was not detectable during fertilization by zona-free in vitro fertilization, suggesting that the antigenic site does not react with proteolytic enzymes during sperm-oocyte fusion and the antibody does not recognize the nascent epitope. Microinjection of sperm heads prepared by sonication and DTT treatment led to the activation of metaphase II oocytes. The oocyte activating function of such sperm heads was significantly diminished after labeling with MN13 prior to intracytoplasmic sperm injection (ICSI), but labeling with antiequatorin antibody MN9 activated oocytes with a frequency similar to that of unlabeled sperm heads. The sperm heads in inactive oocytes formed premature chromosome condensations (PCCs), which were invested by independent metaphase-like spindles. These observations indicate that the postacrosomal PT recognized by mAb MN13 is involved in oocyte activation. MN13p is dissociated from sperm heads during the early stages of decondensation after ICSI. In activated oocytes, MN13-labeled fine granules were redistributed in the midzone spindle region, whereas in inactive oocytes they formed a ring around the polar regions of the metaphase II and PCC spindles.
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Affiliation(s)
- G Manandhar
- Department of Anatomy and Reproductive Cell Biology, Miyazaki Medical College, Miyazaki 889-1692, Japan
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48
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Ludwig M, Schröder AK, Diedrich K. Impact of intracytoplasmic sperm injection on the activation and fertilization process of oocytes. Reprod Biomed Online 2003; 3:230-240. [PMID: 12513861 DOI: 10.1016/s1472-6483(10)62042-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) is used worldwide to treat preferentially severe cases of male factor infertility. In this review, data regarding the processes of oocyte activation and fertilization in non-assisted conception, conventional IVF and ICSI are discussed. The second messenger calcium shows a typical pattern after ICSI, which is different from that after subzonal insemination (SUZI), which is closer to the conditions of normal fertilization. The onset of calcium spikes is delayed. Sometimes a monophasic calcium pattern, in animals typical for parthenogenetic activation, is observed despite normal subsequent oocyte activation. Furthermore, the frequency of spikes is higher after SUZI, and only one phase instead of two is observed after ICSI for the second onset of calcium release. These alterations may be explained by the differences in oocyte activation after ICSI, since no oolemma-sperm contact is present. Sperm decondensation also follows another pattern after ICSI: as long as residuals of the acrosome are present on the sperm head, no sperm decondensation takes place at that site. Therefore, decondensation is delayed and pronucleus formation, especially that of the male pronucleus, takes longer after ICSI as compared with conventional IVF. Since studies have shown that gonosomes are located preferentially in the apical part of the sperm nucleus, this was proposed to be an explanation for a higher incidence of gonosomal aberrations in offspring after ICSI. However, other explanations, taking clinical data like the background risk of the parents into account, can also be offered for this phenomenon. These alternative theories are more likely to be associated with a slight instead of a frank increase in gonosomal aberrations. The inheritance of paternal mitochondrial DNA seems not to be a problem after ICSI, as shown by different studies. Mitochondrial DNA can be demonstrated in embryos after conventional IVF as after ICSI up to the blastocyst stage but not in children born after ICSI. Finally, lesion of the meiotic spindle by the ICSI procedure seems not to be a problem when data from different studies are taken into account. As assumed also at the beginning of the ICSI era, the meiotic spindle is almost always located in an area of < 90 degrees deviation from the polar body axis. Therefore, intrusion of the microinjection needle at the 90 degrees position might not endanger the spindle apparatus. To conclude, several studies using different approaches might show differences in the oocyte activation pattern, the 'choreography of fertilization' and pronucleus formation after ICSI. However, this different pattern does not necessarily mean that ICSI per se is a problem for embryonal development. The different pattern can be explained by the fact that ICSI uses another means of oocyte entry than the normal fertilization process. The clinical data of a high fertilization, cleavage and implantation rate, and especially the data from newborn babies, show that ICSI is a reliable procedure.
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Affiliation(s)
- Michael Ludwig
- Department of Gynecology and Obstetrics, University Clinic Hospital Ratzeburger Allee 160 23538 Lübeck Germany
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Abstract
Although much of male infertility is currently unexplained, it is likely that underlying defects in critical genes or entire gene pathways are responsible. Because powerful technologies exist to bypass severe male-factor infertility, improving the diagnosis of genetic infertility is important for the infertile couple, not only to explain the problem but also to inform them of conditions potentially transmissible to offspring.
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Affiliation(s)
- Paul J Turek
- Department of Urology, University of California San Francisco, 2330 Post Street, San Francisco, California 94115-1695, USA.
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Hewitson L, Simerly CR, Schatten G. Fate of sperm components during assisted reproduction: implications for infertility. HUM FERTIL 2002; 5:110-6. [PMID: 12193794 DOI: 10.1080/1464727022000199022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Studies in non-human primates highlight their suitability as preclinical models for investigating assisted reproduction techniques. The cytoskeletal events of fertilization in non-human primates are similar to those in humans in that they require a paternally derived centrosome. The centrosome, introduced by the sperm at fertilization, organizes a microtubule array that is responsible for bringing the parental genomes together at first mitosis. Incomplete functioning of the sperm centrosome during fertilization has been identified as a novel form of infertility that would not necessarily benefit from intracytoplasmic sperm injection (ICSI). The global use of ICSI to overcome male infertility has been very successful, although concerns remain regarding the long-term effects on children born after ICSI. The cytoskeletal events that occur during ICSI are quite different from the events of in vitro fertilization: a sperm selected for ICSI does not undergo typical oocyte interactions, and abnormal remodelling of the male pronucleus may result. The implications of these findings are discussed in relation to the safety of the ICSI technique.
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Affiliation(s)
- Laura Hewitson
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, Pittsburgh Development Center of the Magee-Womens Research Institute, Pittsburgh, PA 15213, USA
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