1
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Cermisoni GC, Minetto S, Marzanati D, Alteri A, Salmeri N, Rabellotti E, Nova A, Salonia A, Pozzi E, Candiani M, Papaleo E, Pagliardini L. Effect of ejaculatory abstinence period on fertilization and clinical outcomes in ICSI cycles: a retrospective analysis. Reprod Biomed Online 2024; 48:103401. [PMID: 37976657 DOI: 10.1016/j.rbmo.2023.103401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/08/2023] [Accepted: 09/05/2023] [Indexed: 11/19/2023]
Abstract
RESEARCH QUESTION Does ejaculatory abstinence impact fertilization outcomes in intracytoplasmic sperm injection (ICSI) cycles in infertile couples? DESIGN This single-centre retrospective observational study included 6919 ICSI cycles from 2013 to 2022. The primary outcome was the assessment of oocyte fertilization, measured in terms of the rate of formation of two-pronuclear (2PN), 3PN and 1PN zygotes. Secondary outcomes were blastulation, cumulative positive β-human chorionic gonadotrophin test and clinical pregnancy rates. Relationships between ejaculatory abstinence and fertilization outcomes, and ejaculatory abstinence and clinical outcomes were evaluated with multivariable analysis, including possible confounders. RESULTS A positive association was observed between ejaculatory abstinence and semen sample volume (P < 0.001), sperm concentration (P < 0.001) and total motile sperm count (P < 0.001). No association was found between the 1PN zygote rate and ejaculatory abstinence (P = 0.97). Conversely, for each additional day of ejaculatory abstinence, the likelihood of obtaining 2PN zygotes from all inseminated oocytes decreased by 3% [adjusted odds ratio (aOR) 0.97, 95% CI 0.94-0.99], whilst the likelihood of obtaining 3PN zygotes from all inseminated oocytes increased significantly by 14% (aOR 1.14, 95% CI 1.07-1.22). No significant associations were found between ejaculatory abstinence and blastulation, cumulative pregnancy or miscarriage rates. CONCLUSIONS A longer ejaculatory abstinence period significantly decreases the rate of 2PN zygotes, and increases the rate of 3PN zygotes without directly affect blastulation and pregnancy rates.
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Affiliation(s)
- G C Cermisoni
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - S Minetto
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - D Marzanati
- Reproductive Sciences Laboratory, Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Alteri
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
| | - N Salmeri
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - E Rabellotti
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Nova
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - A Salonia
- University Vita-Salute San Raffaele, Milan, Italy; Division of Experimental Oncology/Unit of Urology, URI; IRCCS Ospedale San Raffaele, Milan, Italy
| | - E Pozzi
- Division of Experimental Oncology/Unit of Urology, URI; IRCCS Ospedale San Raffaele, Milan, Italy
| | - M Candiani
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
| | - E Papaleo
- Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - L Pagliardini
- Reproductive Sciences Laboratory, Obstetrics and Gynaecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy.
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2
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Stephens TG, Strand EL, Putnam HM, Bhattacharya D. Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species. Genome Biol Evol 2023; 15:evad149. [PMID: 37566739 PMCID: PMC10445776 DOI: 10.1093/gbe/evad149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/24/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Standing genetic variation is a major driver of fitness and resilience and therefore of fundamental importance for threatened species such as stony corals. We analyzed RNA-seq data generated from 132 Montipora capitata and 119 Pocillopora acuta coral colonies collected from Kāne'ohe Bay, O'ahu, Hawai'i. Our goals were to determine the extent of colony genetic variation and to study reproductive strategies in these two sympatric species. Surprisingly, we found that 63% of the P. acuta colonies were triploid, with putative independent origins of the different triploid clades. These corals have spread primarily via asexual reproduction and are descended from a small number of genotypes, whose diploid ancestor invaded the bay. In contrast, all M. capitata colonies are diploid and outbreeding, with almost all colonies genetically distinct. Only two cases of asexual reproduction, likely via fragmentation, were identified in this species. We report two distinct strategies in sympatric coral species that inhabit the largest sheltered body of water in the main Hawaiian Islands. These data highlight divergence in reproductive behavior and genome biology, both of which contribute to coral resilience and persistence.
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Affiliation(s)
- Timothy G Stephens
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey, USA
| | - Emma L Strand
- Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA
| | - Hollie M Putnam
- Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA
| | - Debashish Bhattacharya
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey, USA
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3
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Haim-Abadi G, Golan-Lev T, Koren A, Benvenisty N. Generation, genomic characterization, and differentiation of triploid human embryonic stem cells. Stem Cell Reports 2023; 18:1049-1060. [PMID: 37116485 DOI: 10.1016/j.stemcr.2023.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/30/2023] Open
Abstract
Humans are diploid organisms, and triploidy in human embryos is responsible for ∼10% of spontaneous miscarriages. Surprisingly, some pregnancies proceed to triploid newborns that suffer from many neuro-developmental disorders. To investigate the impact of triploidy on human development, we generate triploid human embryonic stem cells (hESCs) by fusing isogenic haploid and diploid hESCs. Comparison of the transcriptome, methylome, and genome-wide replication timing shows general similarity between diploid and triploid hESCs. However, triploid cells have a larger volume than diploid cells, demonstrating decreased surface-area-to-volume ratio. This leads to a significant downregulation of cell surface ion channel genes, which are more essential in neural progenitors than in undifferentiated cells, leading to inhibition of differentiation, and it affects the neuronal differentiation ability of triploid hESCs, both in vitro and in vivo. Notably, our research establishes a platform to study triploidy in humans and points to their pathology as observed in triploid embryos.
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Affiliation(s)
- Guy Haim-Abadi
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem 91904, Israel
| | - Tamar Golan-Lev
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem 91904, Israel
| | - Amnon Koren
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Nissim Benvenisty
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem 91904, Israel.
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4
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Bambaranda BGIK, Bomiriya R, Mehlawat P, Choudhary M. Association of extended culture to blastocyst and pre-malignant gestational trophoblastic disease risk following IVF/ICSI-assisted reproduction cycles: an analysis of large UK national database. J Assist Reprod Genet 2022; 39:2317-2323. [PMID: 36001210 PMCID: PMC9596624 DOI: 10.1007/s10815-022-02583-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/15/2022] [Indexed: 10/15/2022] Open
Abstract
PURPOSE To assess whether there is an association between extended in vitro culture based on embryo developmental stage at transfer and pre-malignant gestational trophoblastic disease (GTD) risk of molar pregnancy during assisted reproduction. METHODS A retrospective study was carried out using Human Fertilization and Embryology Authority (HFEA) anonymized register from 1999 to 2016. A total of 540,376 cycles were eligible to be included in the study after excluding any kind of donor treatment or surrogacy, frozen embryo transfers, and cycles with incomplete data. Subgroup analysis was carried out in subjects with primary infertility aiming to exclude an increased risk in those with a previous GTD. Multivariate logistic regression analysis was used to adjust for possible confounders, and the effect of day of embryo transfer in IVF (in vitro fertilization)/ICSI (intracytoplasmic sperm injection) treatment on a molar pregnancy GTD outcome was analyzed. RESULTS The prevalence of a molar pregnancy GTD among the study population was 3.4/10,000 livebirths (53/156,683) with a higher risk in the over 40 age category. No significant difference of pre-malignant GTD incidence was seen between IVF and ICSI (0.01% vs 0.009% respectively). No association was seen with GTD based on type/cause of infertility or number of embryos transferred. Crude (1.06; 95% CI 0.852-1.31) and adjusted (1.07; 95% CI (0.857-1.32) odds ratios were calculated to see an association between day of embryo transfer and the occurrence of a GTD. There was no association between day of embryo transfer and molar GTD risk after adjusting for age and secondary infertility. CONCLUSION No significant association between pre-malignant molar gestational trophoblastic disease and extended in vitro embryo culture was found after analyzing 540,376 cycles of IVF and ICSI.
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Affiliation(s)
- B G I K Bambaranda
- Department of Reproductive Medicine, Newcastle Fertility Centre at Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, NE1 4EP, UK
| | - R Bomiriya
- Department of Statistics, R S Metrics Asia Holdings, Battaramulla, 10120, Sri Lanka
| | - P Mehlawat
- Royal Grammar School, Newcastle upon Tyne, UK
| | - M Choudhary
- Department of Reproductive Medicine, Newcastle Fertility Centre at Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, NE1 4EP, UK.
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Kitasaka H, Konuma Y, Tokoro M, Fukunaga N, Asada Y. Oocyte cytoplasmic diameter of ≥130 μm can be used to determine human giant oocytes. F&S SCIENCE 2022; 3:10-17. [PMID: 35559990 DOI: 10.1016/j.xfss.2021.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To determine if a cytoplasmic diameter of ≥130 μm can help identify human giant oocytes (GOs) in clinical practice and confirm the presence of genetic abnormalities in GOs by assessing the spindle length and centromere numbers. DESIGN Case-control study. SETTING Private in vitro fertilization clinic. PATIENT(S) The subjects were women aged 20-49 years who underwent oocyte retrieval after ovarian stimulation from January 2014 to December 2020. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) The oocyte diameter was measured; immunofluorescent staining was performed to assess the spindle diameter and centromere numbers. RESULT(S) Among the 254,337 oocytes examined, 561 (0.22%) had a diameter of ≥130 μm. The mean diameter ranges in the normal-sized metaphase II (MII) oocytes (MII group) and GO group were 103.0-119.0 and 132.3-175.9 μm. Spindle size could be measured in 6 GOs with 1 spindle (GO1), 10 GOs with 2 spindles (GO2), and 16 MII groups. The equatorial plane and pole-to-pole distance in the GO1 were significantly longer than in the GO2 and MII groups. The median numbers of centromeres were 86 in GOs with 1 spindle and 42 in each spindle for GOs with 2 spindles among 11 GO1s and 5 GO2s. CONCLUSION(S) This study is the first to define GOs as oocytes with a diameter of ≥130 μm and is a large-scale study surveying the incidence of GO. It is also the first study to analyze and elucidate the relationship between spindle numbers within the cytoplasm of GOs and spindle size and centromeres.
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Affiliation(s)
| | | | - Mikiko Tokoro
- Asada Institute for Reproductive Medicine, Kasugai, Aichi, Japan
| | - Noritaka Fukunaga
- Asada Ladies Clinic, Nagoya, Aichi, Japan; Asada Institute for Reproductive Medicine, Kasugai, Aichi, Japan
| | - Yoshimasa Asada
- Asada Ladies Clinic, Nagoya, Aichi, Japan; Asada Institute for Reproductive Medicine, Kasugai, Aichi, Japan
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6
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Tsai NC, Su YT, Lin YJ, Chiang HJ, Huang FJ, Kung FT, Huang HW, Lan KC. Monopronucleated (1PN) and tripronuclear (3PN) zygotes formation during assisted reproduction in POSEIDON group 4 patients: Emphasizing on polar bodies. J Obstet Gynaecol Res 2021; 47:3232-3240. [PMID: 34155738 DOI: 10.1111/jog.14910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/03/2021] [Accepted: 06/13/2021] [Indexed: 12/01/2022]
Abstract
AIM Abnormal fertilization (1PN/3PN) and its accompanying polar body (PB) conditions have been less discussed in poor ovarian responders. By observing the PBs, we analyzed the mechanisms of abnormal fertilization and aimed to explore the role of intracytoplasmic sperm injection/in vitro fertilization (ICSI/IVF) in POSEIDON group 4 patients. METHODS An observational study. All fresh IVF/ICSI cycles from January 2018 to December 2019 were evaluated. The inclusion criteria were POSEIDON group 4. Fertilization and PB conditions were assessed 16-18 h post-insemination. Primary observation endpoints including normal fertilization, abnormal fertilization, and total fertilization failure rate. RESULTS A total of 351 cycles involving 180 patients met the inclusion criteria. Of these, 15 cycles reported no retrieved oocytes. Finally, 336 cycles (IVF, n = 267; ICSI, n = 69) were included. A total of 1005 oocytes and 939 embryos were assessed. The mean female age was 40.8 years, and the mean AMH level was 0.6 ng/mL. The normal fertilization rate was 69.7%. The zygote distribution was 18.7% 0PN, 3.9% 1PN, 66.9% 2PN, 9.5% 3PN, and 1.0% ≥4PN. For 1PN zygotes, 59% were denoted as 1PN2PB. The mean 3PN rate was 8.9%. CONCLUSIONS In POSEIDON group 4, most of the monopronucleated zygotes were 1PN2PB. Digyny (3PN1PB), due to failure to extrude the second PB, was the major cause of triploidy in which ICSI could not circumvent. The distribution of abnormally fertilized zygotes was similar in IVF and ICSI. To investigate the mechanisms of abnormal fertilization and assess whether ICSI is necessary, analysis of PB will provide important clues.
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Affiliation(s)
- Ni-Chin Tsai
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.,Department of Obstetrics and Gynecology, Pingtung Christian Hospital, Pingtung, Taiwan
| | - Yu-Ting Su
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Ju Lin
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsin-Ju Chiang
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Fu-Jen Huang
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Fu-Tsai Kung
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsuan-Wei Huang
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kuo-Chung Lan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.,Center for Menopause and Reproductive Medicine Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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7
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Massalska D, Bijok J, Kucińska-Chahwan A, Zimowski JG, Ozdarska K, Panek G, Roszkowski T. Triploid pregnancy-Clinical implications. Clin Genet 2021; 100:368-375. [PMID: 34031868 DOI: 10.1111/cge.14003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 11/28/2022]
Abstract
Triploidy is a life-limiting genetic aberration resulting from an extra haploid set of chromosomes of paternal (diandric triploidy) or maternal origin (digynic triploidy). Triploidy affects around 1%-2% of all conceptions. The majority of cases is miscarried at early developmental stages. In consequence of genomic imprinting, parental origin affects the phenotype of triploid pregnancies as well as the prevalence and spectrum of related maternal complications. Distinctive ultrasound features of both triploid phenotypes as well as characteristic patterns of biochemical markers may be useful in diagnosis. Molecular confirmation of the parental origin allows to predict the risk of complications, such as gestational trophoblastic neoplasia, hyperthyroidism, hypertension, or preeclampsia associated with the paternal origin of triploidy. Diagnosis of partial hydatidiform mole associated with diandric triploidy is challenging especially in the first trimester pregnancy loss due to the limitations of both histopathology and ultrasound. We present important clinical aspects of triploid pregnancies and indicate unresolved issues demanding further studies.
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Affiliation(s)
- Diana Massalska
- Department of Gynecologic Oncology and Obstetrics, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Julia Bijok
- Department of Gynecologic Oncology and Obstetrics, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Anna Kucińska-Chahwan
- Department of Gynecologic Oncology and Obstetrics, Centre of Postgraduate Medical Education, Warsaw, Poland
| | | | - Katarzyna Ozdarska
- Department of Genetics, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Grzegorz Panek
- Department of Gynecologic Oncology and Obstetrics, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Tomasz Roszkowski
- Department of Gynecologic Oncology and Obstetrics, Centre of Postgraduate Medical Education, Warsaw, Poland
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8
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Bilibio JP, Lorenzzoni PL, Meireles AJC, Maciel Y, Sales P, Nascimento FCD. The usefulness of metaphase I oocytes in women who undergo controlled ovarian hyperstimulation for intracytoplasmic sperm injection. JBRA Assist Reprod 2021; 25:115-121. [PMID: 33021764 PMCID: PMC7863097 DOI: 10.5935/1518-0557.20200062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Objective: The aim of this study was to evaluate the fertilization and blastocyst formation rates of oocytes in metaphase I (MI) obtained from women who underwent controlled ovarian hyperstimulation (COH) for intracytoplasmic injection. Methods: A prospective cohort study that included women from whom at least 1 MI and 1 MII oocyte were obtained after COH was performed. We collected 1,907 oocytes from 164 women (1291 MII, 352 MI and 258 prophase I or atretic). After oocyte classification, the MII and MI oocytes were incubated for 4 hours. Results: After 4 hours, the rescue maturation rate was 57.2%; 205 MI oocytes matured to MII oocytes in vitro (rescued MI-MII group), and 153 remained in MI (arrested MI group). The normal fertilization rates were directly associated with oocyte maturation, with rates of 79.1%, 60.2%, and 31.9% in MII, MI-MII and MI oocytes, respectively (p<0.001). Group arrested MI had an odds ratio (OR) of 7.6 (CI 5.2 - 11.2, p<0.001) for abnormal fertilization compared with Group MII. The blastocyst formation rate was directly associated with oocyte maturation, at 36.4% for MII, 11.4% for MI-MII and 0.6% for MI. Conclusion: Oocytes collected at the MI stage after OCH that did not mature to MII after rescue maturation had a blastocyst formation rate of only 0.6%, while those in MII and MI-MII had rates of 36.4% and 11.4%, respectively. However, we found a pregnancy with the birth of a healthy baby from a blastocyst formed after intracytoplasmic sperm injection (ICSI) of an MI oocyte.
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Affiliation(s)
- João Paolo Bilibio
- Department of Obstetrics and Gynecology, Universidade Federal do Pará, Belém, Pará, Brazil.,Clínica de Reprodução Assistida Pronatus, Belém, PA, Brazil.,Grupo de Pesquisa Bilibio, Universidade Federal do Pará, Belém, PA, Brazil
| | - Pânila Longhi Lorenzzoni
- Clínica de Reprodução Assistida Pronatus, Belém, PA, Brazil.,Grupo de Pesquisa Bilibio, Universidade Federal do Pará, Belém, PA, Brazil.,Programa de Pós Graduação de Ciências Médicas da Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Arivaldo José Conceição Meireles
- Clínica de Reprodução Assistida Pronatus, Belém, PA, Brazil.,Grupo de Pesquisa Bilibio, Universidade Federal do Pará, Belém, PA, Brazil
| | - Yasmin Maciel
- Department of Obstetrics and Gynecology, Universidade Federal do Pará, Belém, Pará, Brazil.,Grupo de Pesquisa Bilibio, Universidade Federal do Pará, Belém, PA, Brazil
| | - Pablo Sales
- Clínica de Reprodução Assistida Pronatus, Belém, PA, Brazil.,Grupo de Pesquisa Bilibio, Universidade Federal do Pará, Belém, PA, Brazil
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9
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Pantos K, Sfakianoudis K, Maziotis E, Rapani A, Karantzali E, Gounari-Papaioannou A, Vaxevanoglou T, Koutsilieris M, Simopoulou M. Abnormal fertilization in ICSI and its association with abnormal semen parameters: a retrospective observational study on 1855 cases. Asian J Androl 2021; 23:376-385. [PMID: 33510051 PMCID: PMC8269831 DOI: 10.4103/aja.aja_84_20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Intracytoplasmic sperm injection (ICSI) efficiently addresses male factor infertility. However, the occurrence of abnormal fertilization, mainly characterized by abnormal pronuclei (PN) patterns, merits investigation. To investigate abnormal fertilization patterns following ICSI and identify their respective associations with abnormal parameters in semen analysis (SA), a retrospective observational study including 1855 cycles was performed. Male infertility diagnosis relied on the 2010 WHO criteria. The population was divided into groups based on their SA results. The presence of 2PNs and extrusion of the second polar body (PB) indicated normal fertilization. A Kruskal–Wallis test along with a Wilcoxon post hoc evaluation and Bonferroni correction was employed for comparison among the groups. For the pregnancy rate, logistic regression was employed. No correlation was established between the SA abnormalities and the 1PN or 3PN formation rates. The highest and lowest 0PN rates were reported for the oligoasthenoteratozoospermic and normal groups, respectively. The lowest cleavage formation rates were identified in the oligoasthenozoospermic and oligoasthenoteratozoospermic groups. The aforementioned groups along with the oligoteratozoospermic group similarly presented the lowest blastocyst formation rates. For the clinical pregnancy rate, no statistically significant difference was observed. In conclusion, the incidence of two or more abnormal SA parameters – with the common denominator being oligozoospermia – may jeopardize normal fertilization, cleavage, and blastocyst rates. Once the developmental milestone of achieving blastocyst stage status was achieved, only oligoasthenozoospermia and oligoasthenoteratozoospermia were associated with lower rates. Interestingly, following adjustment for the number of blastocysts, no statistically significant differences were observed.
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Affiliation(s)
- Konstantinos Pantos
- Centre for Human Reproduction, Genesis Athens Clinic, 14-16 Papanikoli, Chalandri, Athens 11527, Greece
| | - Konstantinos Sfakianoudis
- Centre for Human Reproduction, Genesis Athens Clinic, 14-16 Papanikoli, Chalandri, Athens 11527, Greece
| | - Evangelos Maziotis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
| | - Anna Rapani
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
| | - Eleni Karantzali
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
| | - Artemis Gounari-Papaioannou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
| | - Terpsithea Vaxevanoglou
- Centre for Human Reproduction, Genesis Athens Clinic, 14-16 Papanikoli, Chalandri, Athens 11527, Greece
| | - Michael Koutsilieris
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
| | - Mara Simopoulou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens 11527, Greece
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10
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Sha Q, Zheng W, Feng X, Yuan R, Hu H, Gong F, Hu L, Lin G, Ou X. Novel mutations in TUBB8 expand the mutational and phenotypic spectrum of patients with zygotes containing multiple pronuclei. Gene 2020; 769:145227. [PMID: 33059025 DOI: 10.1016/j.gene.2020.145227] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/24/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022]
Abstract
After fertilization, parental chromosomes decondense and form pronuclei. During these processes, germ cell genomes merge and give rise to the zygotic genome. Multiple pronuclei (MPN) formation is usually caused by polyspermic fertilization or oocyte-derived meiotic failure, and account for 15-18% of cytogenetically abnormal cases among spontaneous abortions. However, pathogenic gene mutations responsible for human MPN formation still need to be identified. Tubulin β eight class VIII (TUBB8) is the major β-tubulin isotype that assembles the human oocyte spindle. In this study, we identified 3 novel heterozygous missense mutations (c.524 T > C [p.V175A], c.10_12delins CTT [p.I4L], and c.1045 G > A [p.V349I]) in TUBB8 that were associated with a new phenotype: MPN in zygotes after in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). These mutations were found in 3 independent female patients with infertility, and had experienced 2-3 failed IVF/ICSI attempts due to zygotic developmental arrest. These sites are evolutionarily conserved in primate TUBB8 genes as well as in other human β-tubulin isotypes, suggesting that they have important biochemical functions. This finding reveals previously unreported phenotypes caused by TUBB8 mutations and will be helpful for future genetic counseling of infertile patients with MPN.
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Affiliation(s)
- Qianqian Sha
- Fertility Preservation Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China
| | - Wei Zheng
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha 410078, China
| | - Xie Feng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Ruiying Yuan
- Fertility Preservation Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China
| | - Huiling Hu
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha 410078, China
| | - Fei Gong
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha 410078, China; Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha 410078, China
| | - Liang Hu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha 410078, China; Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha 410078, China
| | - Ge Lin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha 410078, China; Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha 410078, China.
| | - Xianghong Ou
- Fertility Preservation Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China; The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China.
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11
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Persistent complete hydatidiform molar pregnancy following assisted reproductive technology in a gestational carrier: Case report. Gynecol Oncol Rep 2020; 34:100646. [PMID: 33015278 PMCID: PMC7522337 DOI: 10.1016/j.gore.2020.100646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/04/2020] [Accepted: 09/09/2020] [Indexed: 11/20/2022] Open
Abstract
While the risk of molar pregnancy is lower when assisted reproduction techniques (ART) are used, it is not eliminated. A gestational carrier developed a complete molar pregnancy, with features indicating persistent trophoblastic disease. Due to the potential for malignant transformation, individuals undergoing ART should be counselled about this risk.
A hydatidiform mole is a rare pathology associated with pregnancy, attributed to abnormal gametogenesis and fertilization. When assisted reproduction techniques (ART) are used, the incidence of molar pregnancy is significantly lower however not eliminated. We report a case of a patient serving as a gestational carrier who developed a complete molar pregnancy, with features indicating persistent trophoblastic disease. This 33-year-old G4T3P0A1L3 woman presented with bleeding at 8 weeks gestational age, after in vitro fertilization and frozen embryo transfer. Ultrasound findings and beta-HCG levels were consistent with molar pregnancy. Pathology specimen from D&C confirmed a complete hydatidiform mole. Despite surgical treatment, beta-HCG remained elevated and multiple pulmonary nodules and enlarged lymph nodes were noted on imaging. Methotrexate was considered but was deemed unnecessary because beta-HCG levels returned to normal over time and nodules resolved. Because molar pregnancy carries a risk of malignant transformation, albeit low, individuals undergoing ART should be counselled.
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12
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Caroselli S, Zwergel C, Pirolli A, Sabatino M, Xu Z, Kirsch G, Mai A, Colotti G, Altieri F, Canipari R, Valente S, Ragno R. Discovery of the First Human Arylsulfatase A Reversible Inhibitor Impairing Mouse Oocyte Fertilization. ACS Chem Biol 2020; 15:1349-1357. [PMID: 32239919 DOI: 10.1021/acschembio.9b00999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Arylsulfatase A (ARSA) plays a crucial role in the reproduction of mammals due to its involvement in the specific gamete interaction preceding sperm and egg fusion leading to fertilization. Recently, it has been shown that zona pellucida (ZP) sperm binding and in vivo fertilization in mice are markedly hampered by using a specific anti-ARSA antibody. Herein, the design and discovery of the first ARSA small molecule inhibitor based on a coumarin-containing polycycle are presented. Through a structure-based approach applied on our in-house library, compound 1r was identified as an ARSA reversible inhibitor (ARSAi); then its activity was validated through both surface plasmon resonance and biochemical inhibition experiments, the first providing a KD value of 21 μM and the latter an IC50 value of 13.2 μM. Further investigations highlighted that compound 1r induced 20% sperm death at 25 μM and also impaired sperm motility; nevertheless both the effects were mediated by ROS production, since they were rescued by the cotreatment of 1r and N-acetyl cysteine (NAC). Interestingly, while 1r was not able to hamper the ZP/sperm binding, it markedly decreased the in vitro oocyte fertilization by mouse sperm up to 60%. Notably, this effect was not hampered by 1r/NAC coadministration, hence allowing the ruling out of an ROS-dependent mechanism. In conclusion, herein is reported the first ever hit of ARSAi as a chemical tool that will enable better exploration of ARSA's biological role in fertilization as well as provide a starting point for developing 1r structure optimization aimed at increasing enzyme inhibition potency but also providing a deeper understanding of the involvement of ARSA in the fertilization pathway mechanism.
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Affiliation(s)
- Silvia Caroselli
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Section of Histology and Medical Embryology, Sapienza University of Rome, Via A. Scarpa 16, 00161 Rome, Italy
| | - Clemens Zwergel
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Department of Precision Medicine, Luigi Vanvitelli, University of Campania, Via L. De Crecchio 7, 80138 Naples, Italy
| | - Adele Pirolli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Department of Information Technology, IRBM Science Park, Via Pontina km 30, 600, 00071 Pomezia, Rome, Italy
| | - Manuela Sabatino
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Zhanjie Xu
- Université de Lorraine, UMR CNRS 7565, Structure et Réactivité des Systèmes Moléculaires Complexes, Equipe 3 (HECRIN), 1 Boulevard Arago, 57078, Metz Technopôle, France
| | - Gilbert Kirsch
- Université de Lorraine, UMR CNRS 7565, Structure et Réactivité des Systèmes Moléculaires Complexes, Equipe 3 (HECRIN), 1 Boulevard Arago, 57078, Metz Technopôle, France
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza Università di Roma, Viale Regina Elena 291, 00161 Rome, Italy
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council, c/o Department of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Fabio Altieri
- Department of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Rita Canipari
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Section of Histology and Medical Embryology, Sapienza University of Rome, Via A. Scarpa 16, 00161 Rome, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Rino Ragno
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Rome Center for Molecular Design, Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
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13
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Wang H, Li Y, Yang J, Duan X, Kalab P, Sun SX, Li R. Symmetry breaking in hydrodynamic forces drives meiotic spindle rotation in mammalian oocytes. SCIENCE ADVANCES 2020; 6:eaaz5004. [PMID: 32284983 PMCID: PMC7124937 DOI: 10.1126/sciadv.aaz5004] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 01/14/2020] [Indexed: 06/11/2023]
Abstract
Patterned cell divisions require a precisely oriented spindle that segregates chromosomes and determines the cytokinetic plane. In this study, we investigated how the meiotic spindle orients through an obligatory rotation during meiotic division in mouse oocytes. We show that spindle rotation occurs at the completion of chromosome segregation, whereby the separated chromosome clusters each define a cortical actomyosin domain that produces cytoplasmic streaming, resulting in hydrodynamic forces on the spindle. These forces are initially balanced but become unbalanced to drive spindle rotation. This force imbalance is associated with spontaneous symmetry breaking in the distribution of the Arp2/3 complex and myosin-II on the cortex, brought about by feedback loops comprising Ran guanosine triphosphatase signaling, Arp2/3 complex activity, and myosin-II contractility. The torque produced by the unbalanced hydrodynamic forces, coupled with a pivot point at the spindle midzone cortical contract, constitutes a unique mechanical system for meiotic spindle rotation.
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Affiliation(s)
- HaiYang Wang
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, 855 North Wolfe Street, Baltimore, MD 21205, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Yizeng Li
- Department of Mechanical Engineering, Kennesaw State University, Marietta, GA 30060, USA
- Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Jing Yang
- Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xing Duan
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, 855 North Wolfe Street, Baltimore, MD 21205, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Petr Kalab
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Sean X. Sun
- Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Rong Li
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, 855 North Wolfe Street, Baltimore, MD 21205, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
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14
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Geng Q, Cui X, Zhang Y, Zhang L, Zhang C, Wang K, Chen J, Zhu Q, Xie J, Xu Z, Liu Y, Zhang M, Ding L, Zhang W, Yang C. Screening of triploid with low-coverage whole-genome sequencing by a single-nucleotide polymorphism-based test in miscarriage tissue. J Assist Reprod Genet 2019; 36:2525-2531. [PMID: 31720905 PMCID: PMC6910887 DOI: 10.1007/s10815-019-01588-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/10/2019] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To establish a single-nucleotide polymorphism-based analysis (SBA) method to identify triploidy in the miscarriage tissue by using low-coverage whole-genome sequencing (LC-WGS). METHODS The method was established by fitting a quadratic curve model by counting the distribution of three heterozygous mutation content intervals. The triploid test result was mainly determined by the opening direction and the axis of symmetry of the quadratic curve, and Z test between the same batch samples was also used for auxiliary judgment. RESULTS Two hundred thirteen diploid samples and 8 triploid samples were used for establishment of the analytical method and 203 unknown samples were used for blind testing. In the blind testing, we found 2 cases positive for triploidy. After chromosome microarray analysis (CMA) and mass spectrometry verification, we found that both samples were true positives. We randomly selected 5 samples from the negative samples for mass spectrometry verification, and the results showed that these samples were all true negatives. CONCLUSIONS Our method achieved accurate detection of triploidy in the miscarriage tissue and has the potential to detect more chromosomal abnormality types such as uniparental disomy (UPD) using a single LC-WGS approach.
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Affiliation(s)
- Qian Geng
- Shenzhen Maternity and Child Healthcare Hospital, Shenzhen, China
| | - Xiaoli Cui
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Yaqi Zhang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Lijuan Zhang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Cai Zhang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Kai Wang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Jianguo Chen
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Qingyan Zhu
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Jiansheng Xie
- Shenzhen Maternity and Child Healthcare Hospital, Shenzhen, China
| | - Zhiyong Xu
- Shenzhen Maternity and Child Healthcare Hospital, Shenzhen, China
| | - Yang Liu
- Shenzhen Maternity and Child Healthcare Hospital, Shenzhen, China
| | - MengMeng Zhang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Lijie Ding
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China
| | - Wenyong Zhang
- Southern University of Science and Technology, Shenzhen, China.,Southern University of Science and Technology-CheerLand Institute of Precision Medicine, Shenzhen, Guangdong Sheng, China
| | - Chuanchun Yang
- CheerLand Precision Biomed Co.,Ltd, Shenzhen, Guangdong, China.
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15
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Salmina K, Gerashchenko BI, Hausmann M, Vainshelbaum NM, Zayakin P, Erenpreiss J, Freivalds T, Cragg MS, Erenpreisa J. When Three Isn't a Crowd: A Digyny Concept for Treatment-Resistant, Near-Triploid Human Cancers. Genes (Basel) 2019; 10:E551. [PMID: 31331093 PMCID: PMC6678365 DOI: 10.3390/genes10070551] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/10/2019] [Accepted: 06/19/2019] [Indexed: 12/19/2022] Open
Abstract
Near-triploid human tumors are frequently resistant to radio/chemotherapy through mechanisms that are unclear. We recently reported a tight association of male tumor triploidy with XXY karyotypes based on a meta-analysis of 15 tumor cohorts extracted from the Mitelman database. Here we provide a conceptual framework of the digyny-like origin of this karyotype based on the germline features of malignant tumors and adaptive capacity of digyny, which supports survival in adverse conditions. Studying how the recombinatorial reproduction via diploidy can be executed in primary cancer samples and HeLa cells after DNA damage, we report the first evidence that diploid and triploid cell sub-populations constitutively coexist and inter-change genomes via endoreduplicated polyploid cells generated through genotoxic challenge. We show that irradiated triploid HeLa cells can enter tripolar mitosis producing three diploid sub-subnuclei by segregation and pairwise fusions of whole genomes. Considering the upregulation of meiotic genes in tumors, we propose that the reconstructed diploid sub-cells can initiate pseudo-meiosis producing two "gametes" (diploid "maternal" and haploid "paternal") followed by digynic-like reconstitution of a triploid stemline that returns to mitotic cycling. This process ensures tumor survival and growth by (1) DNA repair and genetic variation, (2) protection against recessive lethal mutations using the third genome.
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Affiliation(s)
- Kristine Salmina
- Latvian Biomedical Research and Study Centre, LV-1067 Riga, Latvia
| | - Bogdan I Gerashchenko
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine, 03022 Kyiv, Ukraine
| | - Michael Hausmann
- Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany
| | - Ninel M Vainshelbaum
- Latvian Biomedical Research and Study Centre, LV-1067 Riga, Latvia
- Institute of Cardiology and Regenerative Medicine, University of Latvia, LV-1004 Riga, Latvia
| | - Pawel Zayakin
- Latvian Biomedical Research and Study Centre, LV-1067 Riga, Latvia
| | - Juris Erenpreiss
- Riga Stradins University, LV-1007 Riga, Latvia
- Clinic IVF-Riga, LV-1010 Riga, Latvia
| | - Talivaldis Freivalds
- Institute of Cardiology and Regenerative Medicine, University of Latvia, LV-1004 Riga, Latvia
| | - Mark S Cragg
- Centre for Cancer Immunology, University of Southampton, Southampton SO16 6YD, UK
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16
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Nickkho-Amiry M, Horne G, Akhtar M, Mathur R, Brison DR. Hydatidiform molar pregnancy following assisted reproduction. J Assist Reprod Genet 2019; 36:667-671. [PMID: 30612209 DOI: 10.1007/s10815-018-1389-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022] Open
Abstract
INTRODUCTION The use of assisted reproduction techniques (ART) is increasing; however, reports of molar pregnancy following ART remain scarce. Currently, the Human Fertility and Embryology Authority (HFEA) collates data on the molar pregnancies that have resulted through the use of ART. Recently, they have indicated that they will no longer collect these data. AIM This paper aimed to examine the incidence of molar pregnancy amongst patients undergoing assisted reproduction. METHODS We contacted HFEA and placed a request under the Freedom of Information Act (2000) for the number of molar pregnancies that resulted from fresh/frozen embryo transfer since HFEA started collecting data in 1991 to February 2018. We also asked how many patients who had suffered a molar pregnancy went on to have a normal pregnancy and how many had subsequent molar pregnancies, in subsequent treatment cycles. RESULTS Between 68 and 76 molar pregnancies occurred within this period using ART (n = 274,655). The incidence of molar pregnancy using fresh intracytoplasmic sperm injection (ICSI) (1/4302) and fresh in vitro fertilisation (IVF) (1/4333) was similar. The risk of recurrence of molar pregnancy following a previous molar was higher following ART compared to spontaneous conceptions. CONCLUSION The use of ICSI should be protective against triploidy; however, the retrospective data suggests that molar pregnancy is not eliminated with the use of ART. It is pertinent to continue to record this data, through the gestational trophoblastic disease centres, in order to ensure no further increase in incidence, appropriate follow-up, and transparency in communication.
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Affiliation(s)
- M Nickkho-Amiry
- Department of Obstetrics and Gynaecology, Tameside and Glossop Integrated Care NHS Foundation Trust, Ashton-under-lyne, OL6 9RW, UK.
| | - G Horne
- Department of Reproductive Medicine, Saint Mary's Hospital, Manchester Academic Health Sciences Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK
| | - M Akhtar
- Department of Reproductive Medicine, Saint Mary's Hospital, Manchester Academic Health Sciences Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK
| | - R Mathur
- Department of Reproductive Medicine, Saint Mary's Hospital, Manchester Academic Health Sciences Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK
| | - D R Brison
- Department of Reproductive Medicine, Saint Mary's Hospital, Manchester Academic Health Sciences Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK.,Maternal and Fetal Health Research Centre, School of Medical Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
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17
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Menéndez-Blanco I, Catala MG, Roura M, Soto-Heras S, Piras AR, Izquierdo D, Paramio MT. Intracytoplasmic sperm injection (ICSI) of prepubertal goat oocytes using fresh and frozen-thawed semen. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2018.11.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Carson JC, Hoffner L, Conlin L, Parks WT, Fisher RA, Spinner N, Yatsenko SA, Bonadio J, Surti U. Diploid/triploid mixoploidy: A consequence of asymmetric zygotic segregation of parental genomes. Am J Med Genet A 2018; 176:2720-2732. [PMID: 30302900 DOI: 10.1002/ajmg.a.40646] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/14/2018] [Accepted: 09/04/2018] [Indexed: 01/16/2023]
Abstract
Triploidy is the presence of an extra haploid set of chromosomes and can exist in complete or mosaic form. The extra haploid set of chromosomes in triploid cells can be of maternal or paternal origin. Diploid/triploid mixoploidy is a unique form of triploid mosaicism that requires the aberrant segregation of entire parental genomes into distinct blastomere lineages (heterogoneic cell division) at the earliest zygotic divisions. Here we report on eight cases of diploid/triploid mixoploidy from our institution and conduct a comprehensive review of the literature. The parental origin of the extra set of chromosomes was determined in two cases; and, based on phenotypic evidence we propose the parental origin in the other cases. One case with complex mixoploidy appears to have a digynic origin in addition to the involvement of two different sperm. Of our eight cases, only one resulted in the birth of a live healthy child. The other pregnancies ended in miscarriage, elective termination of pregnancy, intrauterine fetal demise or neonatal death. A review of the literature and the results of our cases show that a preponderance of recognized cases of diploid/triploid mixoploidy has a digynic origin.
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Affiliation(s)
- Jason C Carson
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Lori Hoffner
- Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania
| | - Laura Conlin
- Department of Pathology, Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, Pennsylvania.,The Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania
| | - W Tony Parks
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rosemary A Fisher
- Trophoblastic Tumour Screening and Treatment Centre, Imperial College London, Charing Cross Hospital, London, United Kingdom
| | - Nancy Spinner
- Department of Pathology, Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, Pennsylvania.,The Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania
| | - Svetlana A Yatsenko
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.,Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania.,Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jeffrey Bonadio
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Urvashi Surti
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.,Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania.,Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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19
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Chung MT, Tzeng CR, Chen CH, Chan C, Chang YE, Wu YH, Chen CH. Live euploid birth and complete hydatid mole, followed by partial hydatid mole after ICSI. J Assist Reprod Genet 2018; 35:1533-1536. [PMID: 29860577 DOI: 10.1007/s10815-018-1224-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/25/2018] [Indexed: 10/14/2022] Open
Affiliation(s)
- Ming-Tzeung Chung
- Department of Gynecology and Obstetrics, Taipei City Hospital Ren-Ai Branch, Taipei, Taiwan.,Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chii-Ruey Tzeng
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Ching-Hui Chen
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Cindy Chan
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yi-En Chang
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yi-Hua Wu
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chi-Huang Chen
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. .,Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan.
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20
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Marin D, Zimmerman R, Tao X, Zhan Y, Scott RT, Treff NR. Validation of a targeted next generation sequencing-based comprehensive chromosome screening platform for detection of triploidy in human blastocysts. Reprod Biomed Online 2018; 36:388-395. [DOI: 10.1016/j.rbmo.2017.12.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 11/27/2022]
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21
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Giuliano S, Cisale H, Ferrari MR. Morphology, morphometry and chromatin distribution in llama sperm nuclei. Reprod Domest Anim 2018; 53:502-511. [PMID: 29356134 DOI: 10.1111/rda.13137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/13/2017] [Indexed: 11/30/2022]
Abstract
The objectives of this study were as follows: (i) to describe and evaluate the frequencies of different morphologies of llama sperm nuclei, (ii) to determine morphometric values of nuclear parameters, (iii) to describe and estimate the frequencies of different classes of chromatin distribution and (iv) to measure haploid DNA content and analyse its nuclear distribution. The study was performed using ejaculates collected from seven males, and sperm nuclei were stained with the Feulgen reaction. Normal morphology ranged from 78.36% to 93.92%, and abnormalities included short, small, large, pyriform, narrow, micro and round nuclei. Important differences in nuclei considered normal were found between some males. The following average values were obtained for each sperm nuclear morphometric parameter analysed: area 11.64 μm2 , perimeter 13.16 μm, length 5.12 μm, width 2.81 μm, ellipticity 1.85 and form 0.83. Differences between males were significant for all the parameters (p < .01). Light microscope observations and cytophotometric determinations allowed discriminating between three classes of chromatin distribution: homogeneous, diffuse and showing a clear band. Significant differences between males were found for the frequencies of the three classes (p < .01). Cluster analysis methods were used to estimate the resemblance between males according to the characteristics of their sperm nuclei. A great intermale variability was found for morphological, morphometric and chromatin distribution data. These parameters would have low dependence between them.
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Affiliation(s)
- S Giuliano
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Cátedra de Física Biológica, Ciudad Autónoma de Buenos Aires, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - H Cisale
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Cátedra de Física Biológica, Ciudad Autónoma de Buenos Aires, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - M R Ferrari
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Cátedra de Física Biológica, Ciudad Autónoma de Buenos Aires, Universidad de Buenos Aires, Buenos Aires, Argentina
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Mateo S, Vidal F, Coll L, Veiga A, Boada M. Chromosomal analysis of blastocyst derived from monopronucleated ICSI zygotes: approach by double trophectoderm biopsy. JBRA Assist Reprod 2017; 21:203-207. [PMID: 28837028 PMCID: PMC5574641 DOI: 10.5935/1518-0557.20170039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Objective This study aims to increase the knowledge about monopronucleated ICSI-derived
blastocysts, analyzing trophectoderm biopsies by aCGH and FISH to evaluate
their chromosome constitution. Methods Fifteen monopronucleated ICSI-derived blastocysts were studied. Double
trophectoderm biopsy was performed and analyzed by FISH and aCGH. The
blastocysts were classified according to chromosome constitution.
Disagreements between the two techniques were assessed. Results Results obtained after FISH and aCGH analyses showed the following: 20%
(3/15) and 60% (9/15) diploid females, respectively; 26.7% (4/15) and 26.7%
(4/15) diploid males, respectively; and 53.3% (8/15) and 13.3% (2/15)
mosaics, respectively. No mosaic male embryos were found using FISH or aCGH.
There were disagreements in 40% (6/15) of the cases due to the higher
detection of mosaicism by FISH compared to aCGH. Conclusions The combination of FISH and aCGH has been shown to be a suitable approach to
increase the knowledge about monopronucleated ICSI-derived embryos. FISH
analysis of blastocysts derived from monopronucleated ICSI zygotes enabled
us to conclude that aCGH underestimates haploidy. Some diploid embryos
diagnosed by aCGH are in fact mosaic. In cases where these embryos would be
used for reproductive purposes, extra analysis of parental genome origin is
recommended.
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Affiliation(s)
- Silvia Mateo
- Reproductive Medicine Service, Department of Obstetrics, Gynaecology and Reproduction, Women's Health Dexeus, Barcelona, Spain
| | - Francesca Vidal
- Cell Biology Unit, Faculty of Biosciences, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lluc Coll
- Reproductive Medicine Service, Department of Obstetrics, Gynaecology and Reproduction, Women's Health Dexeus, Barcelona, Spain
| | - Anna Veiga
- Reproductive Medicine Service, Department of Obstetrics, Gynaecology and Reproduction, Women's Health Dexeus, Barcelona, Spain.,Stem Cell Bank, Centre for Regenerative Medicine, Barcelona, Spain
| | - Montserrat Boada
- Reproductive Medicine Service, Department of Obstetrics, Gynaecology and Reproduction, Women's Health Dexeus, Barcelona, Spain
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Li M, Xue X, Zhao W, Li W, Shi J. Effects of high three pro-nuclei (3PN) proportion incidence on clinical outcomes in the fresh cleavage-stage and blastocyst-stage embryo transfer (ET) cycles. Gynecol Endocrinol 2017; 33:53-56. [PMID: 27249960 DOI: 10.1080/09513590.2016.1190817] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVES The aim of this study was to explore the effect of three pro-nuclei (3PN) incidence on clinical outcomes in the fresh cleavage-stage embryo transfer (CSET) and blastocyst-stage embryo transfer (BSET) cycles. METHODS This retrospective cohort study included 1427 CSET cycles, 632 BSET cycles, and 313 elective single BSET cycles from January 2013 to June 2015. The patients were divided into two groups as follows: Group 1 included patients with no 3PN zygotes and Group 2 included patients with >20% 3PN zygotes. RESULTS We observed that the fertilization rate was significantly lower in 3PN = 0% than 3PN > 20% group (p < 0.05), but the day-3 grade I + II embryo and day-3 grade I + II + III embryo rates were not significantly different between 3PN = 0% and 3PN > 20% group (p > 0.05). Interestingly, in the CSET, the implantation (42.87% and 41.76%, p = 0.585) and clinical pregnancy (59.94% and 58.25%, p = 0.538) rates were not significantly different between two groups. In the BSET, the implantation (61.93% and 49.62%, p < 0.001) and clinical pregnancy rates (69.45% and 61.02%, p = 0.043) were significantly higher in 3PN = 0% than 3PN > 20% group. In the elective single BSET, the implantation (68.91% and 61.33%, p = 0.223) and clinical pregnancy rates (68.48% and 61.33%, p = 0.251) were higher in 3PN = 0% than 3PN > 20% group, but there was no significant difference. CONCLUSIONS We concluded that a high 3PN incidence may predict poor outcomes in BSET but not CSET cleavage-stage.
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Affiliation(s)
- Mingzhao Li
- a The ART Center, Northwest Women's and Children's Hospital , Xi'an , China
| | - Xia Xue
- a The ART Center, Northwest Women's and Children's Hospital , Xi'an , China
| | - Wanqiu Zhao
- a The ART Center, Northwest Women's and Children's Hospital , Xi'an , China
| | - Wei Li
- a The ART Center, Northwest Women's and Children's Hospital , Xi'an , China
| | - Juanzi Shi
- a The ART Center, Northwest Women's and Children's Hospital , Xi'an , China
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Pronuclear removal of tripronuclear zygotes can establish heteroparental normal karyotypic human embryonic stem cells. J Assist Reprod Genet 2016; 33:255-63. [PMID: 26727933 DOI: 10.1007/s10815-015-0634-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022] Open
Abstract
PURPOSE This study aimed to derive heteroparental normal karyotypic human embryonic stem cells (hESCs) from microsurgically corrected tripronuclear (3PN) zygotes. METHODS After sequential culture for 5-6 days, embryos developed from microsurgically corrected 3PN zygotes were analyzed by fluorescence in situ hybridization (FISH) using probes for chromosomes 17, X and Y. Intact 3PN zygotes from clinical in vitro fertilization (IVF) cycles were cultured as the control group. The inner cell mass (ICM) of blastocysts that developed from microsurgically corrected 3PN zygotes was used to derive hESC lines, and the stem cell characteristics of these lines were evaluated. G-banding analysis was adopted to identify the karyotype of the hESC line, and the heteroparental inheritance of the hESC line was analyzed by DNA fingerprinting analysis. RESULTS The blastocyst formation rate (13.5 %) of the microsurgically corrected 3PN zygotes was significantly higher (P < 0.05) than that of intact 3PN zygotes (8.7 %). The diploid rate of the blastocysts (55.0 %) was significantly higher (P < 0.05) than that of the arrested cleavage-stage embryos (18.4 %) in microsurgically corrected 3PN zygotes. The triploid rate of the microsurgically corrected 3PN zygotes (5.7 %) was significantly lower (P < 0.01) than that of intact 3PN zygotes (19.4 %). Furthermore, we established one heteroparental normal karyotypic hESC line from the microsurgically corrected tripronuclear zygotes. CONCLUSIONS Pronuclear removal can effectively remove the surplus chromosome set of 3PN zygotes. A combination of pronuclear removal and blastocyst culture enables the selection of diploidized blastocysts from which heteroparental normal karyotypic hESC lines can be derived.
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Li M, Xue X, Zhang S, Li W, Zhao X, Ren W, Shi J. Effects of triploidy incidence on clinical outcomes for IVF-ET cycles in different ovarian stimulation protocols. Gynecol Endocrinol 2015. [PMID: 26220642 DOI: 10.3109/09513590.2015.1041907] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To discuss the relationship between triploidy incidence and clinical outcomes of embryos derived from normally fertilized oocytes from the same cohort for in vitro fertilization-embryo transfer (IVF-ET) cycles in different ovarian stimulation protocol. METHODS This study included 2070 in vitro fertilization (IVF) cycles with long-term protocol, 802 IVF cycles with ultra short-term protocol and 508 IVF-D (in vitro fertilization by donor semen) cycles with long-term protocol from January 2013 to September 2014. According to the different 3PN rate, patients were divided into three groups as follows: Group 1 included patients with 0% 3PN zygotes, Group 2 included patients with 1-25% 3PN zygotes and Group 3 included patients with >25% 3PN zygotes. MAIN OUTCOME MEASURE female age, no. of retrieved oocytes, normal fertilization rate, day-3 grade I + II embryos rate, day-3 grade I + II + III embryos rate, implantation rate, pregnancy rate and early abortion rate. RESULTS Triploidy cycle incidence rate in IVF and IVF-D cycles with long-term protocol were significantly higher than in IVF cycles with ultra short-term protocol (p < 0.001). Triploidy fertilization rate found no significant difference between the three groups (p > 0.05). In three protocols, normal fertilization rate in 3PN = 0% and 3PN = 1-25% groups were significantly higher compared to 3PN > 25% group (p < 0.001). In IVF cycles with long-term protocol, the day-3 grade I + II embryos, implantation and pregnancy rate in 3PN > 25% group were significantly lower than other two groups (p < 0.05). The day-3 grade I + II + III embryos and early abortion rate found no significant difference between the three groups (p > 0.05). In IVF cycles with ultra short-term protocol, there were no significant differences found in day-3 grade I + II embryos, day-3 grade I + II + III embryos, implantation, pregnancy and early abortion rate (p > 0.05). In IVF-D cycles with long-term protocol, the day-3 grade I + II embryos, day-3 grade I + II + III embryos and implantation rate in 3PN > 25% group were significantly lower than other two groups (p < 0.05). The pregnancy and early abortion rates found no significant difference in the three groups (p > 0.05). CONCLUSION We observed that high proportion of triploid zygotes made a negative effect on clinical outcomes for IVF-ET cycles with long-term protocol.
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Affiliation(s)
- Mingzhao Li
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Xia Xue
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Silin Zhang
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Wei Li
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Xiaoli Zhao
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Wenjuan Ren
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
| | - Juanzi Shi
- a The ART Center, Maternal and Child Health Care Hospital of Shaanxi Province , Xi'an , China
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Grau N, Escrich L, Galiana Y, Meseguer M, García-Herrero S, Remohí J, Escribá MJ. Morphokinetics as a predictor of self-correction to diploidy in tripronucleated intracytoplasmic sperm injection–derived human embryos. Fertil Steril 2015; 104:728-35. [DOI: 10.1016/j.fertnstert.2015.05.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 05/19/2015] [Accepted: 05/19/2015] [Indexed: 11/29/2022]
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Somfai T, Matoba S, Inaba Y, Nakai M, Imai K, Nagai T, Geshi M. Cytoskeletal and mitochondrial properties of bovine oocytes obtained by Ovum Pick-Up: the effects of follicle stimulation and in vitro maturation. Anim Sci J 2015; 86:970-80. [PMID: 26154026 DOI: 10.1111/asj.12387] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 12/19/2014] [Indexed: 11/28/2022]
Abstract
Follicle stimulation by follicular stimulating hormone (FSH) is known to improve developmental competence of bovine oocytes obtained by Ovum Pick-Up (OPU); however, the exact factors in oocytes affected by this treatment have remained unclear. We compared in vitro matured (IVM) oocytes obtained at the immature stage from cows by OPU either without or with stimulation with FSH (non-stimulated and stimulated OPU, respectively) to those obtained by superstimulation and in vivo maturation in terms of cytoskeleton morphology, mitochondrial distribution, intracellular adenosine triphosphate (ATP) content and H2 O2 levels at the metaphase-II stage and intracellular Ca(2+) levels after in vitro fertilization (IVF). Confocal microscopy after immunostaining revealed reduced size of the meiotic spindle, associated with increased tendencies of microfilament degradation and insufficient mitochondrial re-distribution in non-stimulated OPU-derived IVM oocytes compared with those collected by stimulated OPU, which in turn resembled in vivo matured oocytes. However, there was no difference in mitochondrial functions between oocytes obtained by stimulated or non-stimulated OPU in terms of ATP content, cytoplasmic H2 O2 levels, base Ca(2+) levels and the frequencies and amplitudes of Ca(2+) oscillations after IVF. Larger size of metaphase spindles in oocytes obtained by stimulated OPU may reflect and potentially contribute to their high developmental competence.
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Affiliation(s)
- Tamás Somfai
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Satoko Matoba
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Yasushi Inaba
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Michiko Nakai
- National Institute of Agrobiological Sciences, Tsukuba, Japan
| | - Kei Imai
- National Livestock Breeding Center, Nishigo, Japan
| | - Takashi Nagai
- Food and Fertilizer Technology Center, Taipei, Taiwan
| | - Masaya Geshi
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
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Kalatova B, Jesenska R, Hlinka D, Dudas M. Tripolar mitosis in human cells and embryos: occurrence, pathophysiology and medical implications. Acta Histochem 2015; 117:111-25. [PMID: 25554607 DOI: 10.1016/j.acthis.2014.11.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/26/2014] [Accepted: 11/27/2014] [Indexed: 01/08/2023]
Abstract
Tripolar mitosis is a specific case of cell division driven by typical molecular mechanisms of mitosis, but resulting in three daughter cells instead of the usual count of two. Other variants of multipolar mitosis show even more mitotic poles and are relatively rare. In nature, this phenomenon was frequently observed or suspected in multiple common cancers, infected cells, the placenta, and in early human embryos with impaired pregnancy-yielding potential. Artificial causes include radiation and various toxins. Here we combine several pieces of the most recent evidence for the existence of different types of multipolar mitosis in preimplantation embryos together with a detailed review of the literature. The related molecular and cellular mechanisms are discussed, including the regulation of centriole duplication, mitotic spindle biology, centromere functions, cell cycle checkpoints, mitotic autocorrection mechanisms, and the related complicating factors in healthy and affected cells, including post-mitotic cell-cell fusion often associated with multipolar cell division. Clinical relevance for oncology and embryo selection in assisted reproduction is also briefly discussed in this context.
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29
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Filges I, Manokhina I, Peñaherrera MS, McFadden DE, Louie K, Nosova E, Friedman JM, Robinson WP. Recurrent triploidy due to a failure to complete maternal meiosis II: whole-exome sequencing reveals candidate variants. Mol Hum Reprod 2014; 21:339-46. [PMID: 25504873 DOI: 10.1093/molehr/gau112] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 12/05/2014] [Indexed: 01/16/2023] Open
Abstract
Triploidy is a relatively common cause of miscarriage; however, recurrent triploidy has rarely been reported. A healthy 34-year-old woman was ascertained because of 18 consecutive miscarriages with triploidy found in all 5 karyotyped losses. Molecular results in a sixth loss were also consistent with triploidy. Genotyping of markers near the centromere on multiple chromosomes suggested that all six triploid conceptuses occurred as a result of failure to complete meiosis II (MII). The proband's mother had also experienced recurrent miscarriage, with a total of 18 miscarriages. Based on the hypothesis that an inherited autosomal-dominant maternal predisposition would explain the phenotype, whole-exome sequencing of the proband and her parents was undertaken to identify potential candidate variants. After filtering for quality and rarity, potentially damaging variants shared between the proband and her mother were identified in 47 genes. Variants in genes coding for proteins implicated in oocyte maturation, oocyte activation or polar body extrusion were then prioritized. Eight of the most promising candidate variants were confirmed by Sanger sequencing. These included a novel change in the PLCD4 gene, and a rare variant in the OSBPL5 gene, which have been implicated in oocyte activation upon fertilization and completion of MII. Several variants in genes coding proteins playing a role in oocyte maturation and early embryonic development were also identified. The genes identified may be candidates for the study in other women experiencing recurrent triploidy or recurrent IVF failure.
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Affiliation(s)
- I Filges
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4 Medical Genetics, Department of Biomedicine, University Hospital Basel, Basel 4031, Switzerland
| | - I Manokhina
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4
| | - M S Peñaherrera
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4
| | - D E McFadden
- Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4 Department of Pathology, University of British Columbia, Vancouver, BC, Canada V6T 2B5
| | - K Louie
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4
| | - E Nosova
- Department of Medical Genetics, Centre for Molecular Medicine and Therapeutics, University of British Columbia, Vancouver, BC, Canada V5Z 4H4 Centre for Applied Neurogenetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3
| | - J M Friedman
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4
| | - W P Robinson
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada V6T 1Z3 Child and Family Research Institute, Vancouver, BC, Canada V5Z 4H4
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Jin HX, Dai SJ, Song WY, Yao GD, Shi SL, Sun YP. Embryo developmental potential of microsurgically corrected human three-pronuclear zygotes. Syst Biol Reprod Med 2014; 61:96-102. [PMID: 25411094 DOI: 10.3109/19396368.2014.986693] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We explored the embryo development potential of human three-pronuclear (3PN) zygotes reduced to two-pronuclear (2PN) zygotes (3 → 2PN zygotes) by micropuncture. In this study, there were three groups, the 3 → 2PN group (338 zygotes), the non-corrected 3PN group (381 zygotes), and the normal 2PN group (359 zygotes). The first cleavage mode (2-cell cleavage or 3-cell cleavage), 6-8 cell embryogenesis rate, high-quality embryogenesis rate and Day 5/Day 6 blastulation rate were compared between the three groups. The success rate of enucleation was 92.9%. The 2-cell cleavage rate was significantly higher in the 3 → 2PN group (74.3%) than in the 3PN group (36.4%) (P < 0.05), but had no statistical difference compared with the 2PN group (86.0%) (P > 0.05). The 6-8 cell embryogenesis rate was significantly higher in the 3 → 2PN group (91.1%) as compared to the 2PN group (85.6%) (P < 0.05), but had no statistical difference compared with the 3PN group (95.0%) (P > 0.05). Total blastulation rate was significantly higher in the 2PN group (58.8%) as compared to the 3PN group (21.5%) (P < 0.01), and in the 3 → 2PN group as compared to the 3PN group (5.6%) (P < 0.01). Also D5 blastulation rate was significantly higher in the 2PN group (53.7%) as compared to the 3 → 2PN group (8.9%) (P < 0.01), and in the 3 → 2PN group as compared to the 3PN group (1.9%) (P < 0.01). In 3 → 2PN zygotes, the first cleavage mode is mainly 2 cells which is significantly higher than that in 3PN zygotes. Compared with 3PN zygotes, the embryo developmental potential of 3 → 2PN zygotes is improved, but still is lower than that in 2PN zygotes.
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Affiliation(s)
- Hai-xia Jin
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou , China
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The chromosomal constitution of embryos arising from monopronuclear oocytes in programmes of assisted reproduction. Int J Reprod Med 2014; 2014:418198. [PMID: 25763399 PMCID: PMC4334058 DOI: 10.1155/2014/418198] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/09/2014] [Indexed: 11/18/2022] Open
Abstract
The assessment of oocytes showing only one pronucleus during assisted reproduction is associated with uncertainty. A compilation of data on the genetic constitution of different developmental stages shows that affected oocytes are able to develop into haploid, diploid, and mosaic embryos with more or less complex chromosomal compositions. In the majority of cases (~80%), haploidy appears to be caused by gynogenesis, whereas parthenogenesis or androgenesis is less common. Most of the diploid embryos result from a fertilization event involving asynchronous formation of the two pronuclei or pronuclear fusion at a very early stage. Uniparental diploidy may sometimes occur if one pronucleus fails to develop and the other pronucleus already contains a diploid genome or alternatively a haploid genome undergoes endoreduplication. In general, the chance of obtaining a biparental diploid embryo appears higher after conventional in vitro fertilization than after intracytoplasmic sperm injection. If a transfer of embryos obtained from monopronuclear oocytes is envisaged, it should be tried to culture them up to the blastocyst since most haploid embryos are not able to reach this stage. Comprehensive counselling of patients on potential risks is advisable before transfer and a preimplantation genetic diagnosis could be offered if available.
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Mantikou E, van Echten-Arends J, Sikkema-Raddatz B, van der Veen F, Repping S, Mastenbroek S. Temporal and developmental-stage variation in the occurrence of mitotic errors in tripronuclear human preimplantation embryos. Biol Reprod 2013; 89:42. [PMID: 23863408 DOI: 10.1095/biolreprod.113.107946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Mitotic errors during early development of human preimplantation embryos are common, rendering a large proportion of embryos chromosomally mosaic. It is also known that the percentage of diploid cells in human diploid-aneuploid mosaic embryos is higher at the blastocyst than at the cleavage stage. In this study, we examined whether there is temporal and/or developmental-stage variation in the occurrence of mitotic errors in human preimplantation embryos from the first day of development onward using mitotically stable digynic tripronuclear human embryos as a model system. All the cells of the 114 digynic tripronuclear human preimplantation embryos included were analyzed by fluorescence in situ hybridization for chromosomes 1, 13, 16, 17, 18, 21, X, and Y. Embryos were grouped according to day of development (1-6) and developmental stage (2-cell to blastocyst stage). The possibility of a mitotic error was highest in the first and second mitotic divisions. The percentage of cells with mitotic errors increased during preimplantation development and was highest at the 9-16 cell stage (76%, P = 0.027). Thereafter, the percentage of cells with mitotic errors decreased to 64% at the morula and 56% at the blastocyst stage. The pattern found correlates with the activation of the embryonic genome at the 8-16 cell stage. A better insight in the timing of occurrence of mitotic errors in human preimplantation embryos could help in understanding and prevention of these errors and is relevant in the context of PGS.
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Affiliation(s)
- Eleni Mantikou
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Savage P, Sebire N, Dalton T, Carby A, Seckl MJ, Fisher RA. Partial molar pregnancy after intracytoplasmic sperm injection occurring as a result of diploid sperm usage. J Assist Reprod Genet 2013; 30:761-4. [PMID: 23640373 DOI: 10.1007/s10815-013-0002-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 04/16/2013] [Indexed: 11/28/2022] Open
Abstract
PURPOSE Partial molar pregnancies are rare conceptions characterized by having 69 rather than 46 chromosomes, the additional chromosome complement usually occurring as a result of fertilization of the ovum by two sperm. Although assisted conception with intracytoplasmic sperm injection (ICSI) should prevent the development of a partial molar pregnancy, occasional cases have been described after assisted conception using ICSI. The objective of this study was to investigate the cause of partial molar pregnancy in a couple who had undertaken assisted conception with ICSI. METHODS Fluorescent microsatellite genotyping of DNA from the couple and tissue from their partial molar pregnancy was performed in order to confirm diagnosis and investigate the origin of the additional chromosome set. RESULTS Genotyping confirmed that the partial molar tissue was triploid with an additional chromosome complement from the father. Genotyping of additional loci proximal to the centromere demonstrated that the two paternal sets of chromosomes originated in a single sperm with a double complement of paternal DNA resulting from non-reduction at the second meiotic division. CONCLUSIONS This study confirms that partial molar pregnancy may occur after assisted conception with ICSI and that this occurs as a result of fertilization with a diploid sperm.
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Affiliation(s)
- Philip Savage
- Department of Medical Oncology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK.
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34
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The potential significance of binovular follicles and binucleate giant oocytes for the development of genetic abnormalities. J Genet 2012; 91:397-404. [DOI: 10.1007/s12041-012-0195-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Piroli A, Marci R, Marinangeli F, Paladini A, Di Emidio G, Giovanni Artini P, Caserta D, Tatone C. Comparison of different anaesthetic methodologies for sedation during in vitro fertilization procedures: effects on patient physiology and oocyte competence. Gynecol Endocrinol 2012; 28:796-9. [PMID: 22420562 DOI: 10.3109/09513590.2012.664193] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The main goal of the present retrospective study is to compare four analgesic methodologies (EMLA cream, propofol, thiopental sodium, sevoflurane) for in vitro fertilization (IVF) oocyte retrieval. We found that most anaesthetic parameters were not significantly different among all treatments. In contrast, significant differences were revealed in all groups for total number of oocytes retrieved per patient, rate of mature oocytes at metaphase II stage (MII) and percentage of fertilization and embryo development. In the EMLA cream and thiopental sodium groups we observed the highest percentage of MII oocytes (P < 0.001). Fertilization rate in the EMLA and sevoflurane groups were similar but significantly higher than the propofol and thiopental sodium groups (P < 0.001). The highest rate of anomalous fertilization was observed in the propofol group. Rate of embryo development was similar in all groups but sevoflurane group had a lower percentage of good embryos. In conclusion, by comparing different anaesthetic techniques with different mechanisms of action and administration, potential negative effects of these drugs on the initial stages of human IVF procedure were revealed. Therefore, a local anaesthetic cream is proposed as an acceptable alternative option for anaesthesia during transvaginal oocyte retrieval.
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Affiliation(s)
- Alba Piroli
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of L'Aquila, L'Aquila, Italy
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Chen X, Luo Y, Fan Y, Yue L, Wu X, Chen Y, Sun X. Triploid and diploid embryonic stem cell lines derived from tripronuclear human zygotes. J Assist Reprod Genet 2012; 29:713-21. [PMID: 22527897 DOI: 10.1007/s10815-012-9764-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 03/28/2012] [Indexed: 12/23/2022] Open
Abstract
PURPOSE Human embryonic stem cells (hESCs) are self-renewing, pluripotent cells that are valuable research tools and hold promise for use in regenerative medicine. The need for new hESC lines motivated our attempts to find a new resource for the derivation of hESC lines. The aim of this work was to establish more hESC lines from abnormal fertilized zygotes and to meet the emerging requirements for their use in cell replacement therapies, disease modeling, and basic research. METHODS A total of 130 tripronuclear human zygotes was collected 18-20 h post-insemination and cultured in a modified culture medium. The inner cell mass of 12 blastocysts were isolated by a mechanical method in order to establish embryonic stem cell lines. RESULTS We established four hESC lines derived from 130 trinuclear zygotes, one of which was triploid and the others were diploid. The efficiency of deriving hESC lines is 3.08 %. The ratio of deriving triploid and diploid hESC lines is 1:3. All of these hESC lines exhibited similar markers of undifferentiated hESCs and had the typical morphology of hESCs, a capacity for long-term proliferation, and pluripotent differentiation potential both in vivo and in vitro. CONCLUSIONS These abnormal zygotes, which otherwise would have been discarded, can serve as an alternative source for normal euploid hESC lines.
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Affiliation(s)
- Xinjie Chen
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou Key Laboratory of Reproduction and Genetics, Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical College, Duobao Road 63#, Guangzhou, Guangdong, 510150, People's Republic of China.
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O'Leary T, Duggal G, Lierman S, Van den Abbeel E, Heindryckx B, De Sutter P. The influence of patient and cohort parameters on the incidence and developmental potential of embryos with poor quality traits for use in human embryonic stem cell derivation. Hum Reprod 2012; 27:1581-9. [PMID: 22442247 DOI: 10.1093/humrep/des040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Human embryonic stem cells (hESCs) are most commonly derived from the inner cell mass (ICM) of blastocyst stage embryos. While the majority of hESC lines originate from good-quality embryos donated after cryogenic storage, poor-quality embryos (PQEs) not suitable for clinical use have also been shown to generate hESC. This provides a newfound function for embryos that would otherwise be discarded following IVF or ICSI. Owing to their lack of clinical importance, however, data on the poorest embryos in a cohort go largely unreported in the literature. It is therefore of interest to better understand the availability of PQEs from IVF/ICSI cycles and to determine their ability to develop into blastocysts with good-quality ICMs for use in hESC derivation. In this study, we investigate the influence of patient parameters and embryo cohort on PQE incidence, blastocyst development, ICM quality and successful hESC derivation from donated PQEs. METHODS PQEs from 736 patient cycles that did not meet our clinical criteria for transfer or cryopreservation were cultured until Day 6 of development and assessed for blastocyst formation and ICM quality. A subset of blastocysts with good-quality ICMs were then used for hESC derivation attempts. Anonymous patient data such as maternal age, embryo history and cohort parameters were then retrospectively compiled and analysed. RESULTS PQEs made up 46.8% of two pronucleate embryos created from IVF/ICSI. Including embryos with abnormal fertilization, a mean of 3.6 ± 2.8 embryos were donated per cycle with 32.6% developing to the blastocyst stage. Good-quality ICM were produced in 13.9% of PQEs cultured. Of good-quality ICM, 15.4% of those used in hESC derivation attempts resulted in a novel line. The PQEs that originated from older patients (>37 year) or from cycles that did not result in pregnancy had significantly diminished blastocyst development and ICM quality. Maternal age was also shown to further influence the ability of good-quality ICMs to generate hESC. CONCLUSIONS PQEs are an abundant source of embryos capable of developing to blastocysts with good-quality ICMs and subsequently generating novel hESC. We have shown that prognostic variables used to predict IVF/ICSI outcome can also help predict which PQEs have the best hESC developmental potential. Owing to the diversity of PQE origin, experiments designed to compare hESC derivation techniques or efficiency using PQEs should consider clinical IVF/ICSI parameters to establish groups with equal developmental competence. Additional investigation is needed to determine if these results are applicable to hESC derivation using good-quality embryos.
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Affiliation(s)
- T O'Leary
- Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan, Ghent, Belgium.
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Self-correction in tripronucleated human embryos. Fertil Steril 2011; 96:951-6. [DOI: 10.1016/j.fertnstert.2011.07.1087] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 05/27/2011] [Accepted: 07/08/2011] [Indexed: 11/19/2022]
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Figueira RCS, Setti AS, Braga DPAF, Iaconelli A, Borges E. Prognostic value of triploid zygotes on intracytoplasmic sperm injection outcomes. J Assist Reprod Genet 2011; 28:879-83. [PMID: 21805146 DOI: 10.1007/s10815-011-9610-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Accepted: 07/11/2011] [Indexed: 10/17/2022] Open
Abstract
PURPOSE To evaluate the prognostic significance of triploidy incidence on the outcomes of embryos derived from normally fertilized oocytes from the same cohort. METHODS This study included 1500 ICSI cycles. Logistic regression models were used to study the influence of abnormal fertilization on the development and clinical outcomes of embryos derived from normally fertilized oocytes from the same cohort RESULTS We observed a negative influence of the percentages of triploid zygotes on fertilization (75.2% and 56.8%, P < 0.0001), high-quality embryos (58.9% and 48.2%, P = 0.0001), pregnancy (34.1% and 28.2%, P = 0.0540) and implantation rates (20.0% and 13.3%, P = 0.0012). When the 3PN zygote rate was >25%, the percentages of normal fertilization, high-quality embryos and implantation rates were significantly lower than in the control group. CONCLUSIONS We observed an approximately 50% lower risk of pregnancy and a 3.5-fold higher risk of miscarriage in cycles with a 3PN incidence of >25%.
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Affiliation(s)
- Rita C S Figueira
- Fertility-Assisted Fertilization Center, Av. Brigadeiro Luis Antônio, 4545, Zip code: 01401-002, São Paulo, SP, Brazil
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Semen analysis by electron and fluorescence microscopy in a case of partial hydatidiform mole reveals a high incidence of abnormal morphology, diploidy, and tetraploidy. Fertil Steril 2011; 95:2430.e1-5. [DOI: 10.1016/j.fertnstert.2011.01.161] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 01/12/2011] [Accepted: 01/24/2011] [Indexed: 11/23/2022]
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Spirito S, Campi S, Boquet M, Fernández H, Ferrari M. Equine sperm nuclei with different ploidy levels: relationship between the nuclear DNA content and the nuclear area. Andrologia 2011; 43:248-53. [PMID: 21486405 DOI: 10.1111/j.1439-0272.2010.01059.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The aims of this study were to estimate the ability of the Feulgen reaction to identify equine sperm nuclei with different ploidy levels, to determine the frequency of haploid, diploid and polyploid sperm nuclei in the semen of fertile equines and to evaluate the relationship between the nuclear DNA content and the nuclear area. Determination of the ploidy level of Feulgen-stained spermatozoa using a scanning microspectrophotometer was very similar to the subjective estimations made with a light microscope. This indicates that the Feulgen reaction is a simple, inexpensive and reliable technique to recognise the ploidy level of equine spermatozoa. The incidence of diploid and polyploid spermatozoa, determined with a light microscope in 11 fertile equines, was 0.17 ± 0.08% and 0.027 ± 0.027% respectively. DNA content values obtained by microspectrophotometry in the only equine that presented polyploid spermatozoa allowed us to discriminate between haploid, diploid and polyploid subpopulations. Measurement of the nuclear area discriminated only two subpopulations: one including the haploid and diploid subpopulations and the other including the polyploid one. The similarity between the area of the haploid and diploid sperm nuclei suggests that the increase in DNA content is anisotropic, with a privileged direction of growth perpendicular to the nuclear flattening plane.
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Affiliation(s)
- S Spirito
- Area Física Biológica, UBA, Ciudad Autónoma de Buenos Aires, Argentina
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Rosenbusch BE. A preliminary concept, deduced from cytogenetic analyses, for explaining different types of multipronuclear oocytes obtained after intracytoplasmic sperm injection. Fertil Steril 2010; 94:2479-81. [PMID: 20451180 DOI: 10.1016/j.fertnstert.2010.03.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 03/25/2010] [Accepted: 03/26/2010] [Indexed: 10/19/2022]
Abstract
Oocytes with three or more pronuclei and one or two polar bodies arising after intracytoplasmic sperm injection were analyzed cytogenetically, and the data were used to develop a general model explaining the possible origin of the abnormal pronuclear stages. The mechanisms, either separately or in variable combinations, that induce the appearance of additional pronuclei are: 1) nonextrusion of the second polar body; 2) incomplete chromatid segregation into the extruded second polar body; and 3) dispersal of the oocyte chromatids in the presence of the second polar body formation.
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Affiliation(s)
- Bernd E Rosenbusch
- Department of Gynecology and Obstetrics, University of Ulm, Ulm, Germany.
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Chen X, Fan Y, Long X, Sun X. Similar DNA methylation and histone H3 lysine 9 dimethylation patterns in tripronuclear and corrected bipronuclear human zygotes. J Reprod Dev 2010; 56:324-9. [PMID: 20197641 DOI: 10.1262/jrd.09-170a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
After fertilization, male and female gametes undergo extensive reprogramming to restore totipotency. Both DNA methylation and histone modification are important epigenetic reprogramming events. Previous studies have reported that the paternal pronucleus of the human zygote is actively demethylated to some extent, while the maternal pronucleus remains methylated. However, to our knowledge, the relationship between DNA methylation and H3K9 dimethylation patterns in human embryos has not been reported. In this study, we examined the dynamic DNA methylation and H3K9 dimethylation patterns in triploid and bipronucleated zygotes and early developing embryos. We sought to gain further insight into the relationship between DNA methylation and H3K9 dimethylation and to investigate whether removing a pronucleus from triploid zygotes affects DNA methylation and H3K9 dimethylation patterns. We found that active DNA demethylation of the two male pronuclei occurred in tripronuclear human zygotes while the female pronucleus remained methylated at 20 h post-insemination. In tripronuclear human zygotes, H3K9 was hypomethylated in the two paternal pronuclei relative to the maternal pronucleus. Our data show that there are no differences in the DNA methylation and H3K9 dimethylation patterns between tripronuclear and corrected bipronuclear human zygotes. However, correction of 3PN human zygotes dispermic in origin could not improve subsequent embryo development. In conclusion, DNA methylation and H3K9 dimethylation patterns are well correlated in tripronuclear zygotes and embryos; early embryo development is not affected by removal of a male pronucleus. Our results imply that limited developmental potential of either 3PN or corrected 2PN embryos may not be caused by the abnormalities in DNA methylation or H3K9 dimethylation modification.
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Affiliation(s)
- Xinjie Chen
- Guangzhou Key Laboratory of Reproduction and Genetics, Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical College, Guangdong, China
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Rosenbusch BE. The unresolved origin of uniparental diploid cell lines. Fertil Steril 2010; 93:e1; author reply e2. [DOI: 10.1016/j.fertnstert.2009.10.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 10/29/2009] [Indexed: 10/20/2022]
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Chromatin Quality as a Crucial Factor for the Success of Fluorescent in Situ Hybridization Analyses of Unfertilized Oocytes, Polar Bodies and Arrested Zygotes. Balkan J Med Genet 2010. [DOI: 10.2478/v10034-010-0012-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Chromatin Quality as a Crucial Factor for the Success of Fluorescent in Situ Hybridization Analyses of Unfertilized Oocytes, Polar Bodies and Arrested ZygotesMaterial that is supernumerary or unsuitable for in vitro fertilization (IVF) procedures is used for basic and for IVF-related research. Despite the disadvantages of such cells, they have contributed much to our understanding of the mechanisms and prevalence of different abnormalities.Fifty-four human unfertilized oocytes, 34 arrested bipronuclear zygotes and 15 polar bodies were fixed for analysis on the third day after in vitro insemination and were subjected to fluorescent in situ hybridization (FISH) with probes for chromosomes 18, 21, X and Y (centromere for 18, X, Y and locus-specific for 21). The aim of the study was the comparison of FISH efficiency in differently condensed chromatin.The success of FISH analysis was over 60% of analyzed cells and it was dependent on the chromatin changes (condensation and/or fragmentation) during the culture period before cell fixation. Chromatin ageing was the crucial factor for the reduced success of FISH in both oocyte chromosomes (60.0%) and pronuclei (61.76%). The chromatin of second polar bodies (PBII), and premature chromosome condensation (PCC) of the sperm chromatin in oocytes was more suitable for FISH analysis (FISH success 75.0% in PBII and 64.29% in PCC) with both centromere and locus-specific probes.These results revealed the significance of early signs of in vitro cell ageing for the success of FISH analysis and for the interpretation of results in case of analysis of unfertilized human ova, polar bodies and arrested zygotes.
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Rosenbusch BE. Selective microsurgical removal of a pronucleus from tripronuclear human oocytes to restore diploidy: disregarded but valuable? Fertil Steril 2009; 92:897-903. [DOI: 10.1016/j.fertnstert.2008.07.1740] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2008] [Revised: 06/12/2008] [Accepted: 07/14/2008] [Indexed: 10/21/2022]
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Understanding what determines the frequency and pattern of human germline mutations. Nat Rev Genet 2009; 10:478-88. [PMID: 19488047 DOI: 10.1038/nrg2529] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Surprising findings about human germline mutation have come from applying new technologies to detect rare mutations in germline DNA, from analysing DNA sequence divergence between humans and closely related species, and from investigating human polymorphic variation. In this Review we discuss how these approaches affect our current understanding of the roles of sex, age, mutation hot spots, germline selection and genomic factors in determining human nucleotide substitution mutation patterns and frequencies. To enhance our understanding of mutation and disease, more extensive molecular data on the human germ line with regard to mutation origin, DNA repair, epigenetic status and the effect of newly arisen mutations on gamete development are needed.
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Rosenbusch B. Co-existence of a diploid hydatidiform mole and a normal fetus: mysterious events at the pronuclear stage. Hum Reprod 2008; 23:2876-7. [PMID: 18927128 DOI: 10.1093/humrep/den378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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