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Khajedehi N, Fathi R, Akbarinejad V, Gourabi H. Oocyte Vitrification Reduces its Capability to Repair Sperm DNA Fragmentation and Impairs Embryonic Development. Reprod Sci 2024; 31:1256-1267. [PMID: 38151654 DOI: 10.1007/s43032-023-01419-1] [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: 08/28/2023] [Accepted: 11/29/2023] [Indexed: 12/29/2023]
Abstract
Oocytes play a crucial role in repairing sperm DNA damage, which can affect the next generation; however, certain factors can impair this ability. This study examined whether oocyte vitrification, a widely used method for fertility preservation, negatively affects repair ability. Male DBA/2 mice (n = 28) were injected with 101.60 µmol/100 g body weight of tert-Butyl hydroperoxide (tBHP) for 14 days to induce sperm DNA damage. Histological changes, sperm functions, and DNA fragmentation were assessed using the TUNEL assay. Cumulus-oocyte-complexes (COCs) of superovulated female DBA/2 mice (n = 28) were vitrified using the Cryotop method. Fresh and vitrified oocytes were then fertilized by tBHP-treated and untreated sperms, and subsequent embryonic development was monitored. Additionally, the expression of Mre11a, Rad51, Brca1, and Xrcc4 was assessed in resulting zygotes and blastocysts using real-time PCR. The sperm tBHP treatment reduced differentiated spermatogenic cells in the testicular tissue, sperm concentration, and motility, while increasing DNA fragmentation (P < 0.05). The fertilization rate was decreased in the tBHP-treated sperm-vitrified oocyte group (P < 0.05), and the two-cell rate diminished in tBHP-treated sperm-fresh and vitrified oocyte groups (P < 0.05). The four-cell to blastocyst rate decreased in the untreated sperm-vitrified oocyte and the tBHP-treated sperm-fresh and vitrified oocyte groups (P < 0.05), and the tBHP-treated sperm-vitrified oocyte groups had the lowest blastocyst rate. In zygotes, Brca1 was upregulated in the tBHP-treated sperm-vitrified oocyte group (P < 0.05). Also, in blastocysts, Rad51, Brca1, and Xrcc4 were significantly upregulated in the untreated sperm-vitrified oocytes group (P < 0.05). Damages to the oocyte due to vitrification can disrupt the repair of sperm DNA fragmentation and consequently impair the embryo development.
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Affiliation(s)
- Niloofar Khajedehi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Rouhollah Fathi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
| | - Vahid Akbarinejad
- Department of Theriogenology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Hamid Gourabi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
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Karagianni M, Papadopoulou MI, Oraiopoulou C, Christoforidis N, Papatheodorou A, Chatziparasidou A. Embryos from vitrified vs. fresh oocytes in an oocyte donation program: a comparative morphokinetic analysis. F&S SCIENCE 2024; 5:174-181. [PMID: 38580180 DOI: 10.1016/j.xfss.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/29/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
OBJECTIVE To compare the morphokinetic patterns of human embryos originating from vitrified oocytes (VITRI group) with those derived from freshly collected oocytes (CONTROL group) in oocyte donation cycles. DESIGN This is a retrospective observational study. SETTING Embryolab Fertility Clinic, Embryology Lab, Thessaloniki, Greece. PATIENT(S) The study included embryos from 421 vitrified oocytes from 58 oocyte donation cycles and 196 fresh oocytes from 23 oocyte donation cycles. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Key time parameters, dynamic events, fertilization rates, degeneration rates, cleavage rates, blastocyst rates, pregnancy rates, clinical pregnancy rates, implantation rates, and live birth rates were estimated. RESULTS The mean survival rate of vitrified oocytes was 92.58% (±7.42%). Fertilization rates were significantly different between the 2 groups (VITRI group: 71.92% ± 20.29% and CONTROL group: 80.65% ± 15.22%) whereas the degeneration, cleavage, blastocyst, pregnancy, clinical pregnancy, ongoing pregnancy, implantation, and live birth rates were not significantly different between embryos derived from fresh or vitrified oocytes. Time-lapse analysis showed no significant difference in any key time parameter. However, when examining dynamic parameters, first cell cycle (CC1) (t2 - tPB2: from the second polar body extrusion (tPB2) up to 2 cells (t2)) showed a significant difference whereas CC1a (t2 - tPNf: from fading of the pronuclei (tPNf) up to 2 cells (t2)) was at the threshold of significance. CONCLUSION(S) CC1 in vitrified oocytes exhibited a comparatively slower progression in contrast to fresh oocytes. Conversely, CC1a in vitrified oocytes demonstrated faster progression compared with fresh oocytes. It is worth noting that these temporary deviations had minimal impact on the subsequent development. Despite the clinical outcomes showing a decrease in the vitrified group, none of them reached statistical significance. This lack of significance could be attributed to the limited sample size of the study.
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Affiliation(s)
- Mary Karagianni
- Embryology Department, Embryolab Fertility Clinic, Thessaloniki, Greece.
| | | | - Chara Oraiopoulou
- Embryology Department, Embryolab Fertility Clinic, Thessaloniki, Greece
| | - Nikolaos Christoforidis
- Clinical Department, Embryolab Fertility Clinic, Thessaloniki, Greece; Embryolab Academy, Thessaloniki, Greece
| | | | - Alexia Chatziparasidou
- Embryology Department, Embryolab Fertility Clinic, Thessaloniki, Greece; Embryolab Academy, Thessaloniki, Greece
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Pantos K, Maziotis E, Trypidi A, Grigoriadis S, Agapitou K, Pantou A, Nikolettos K, Kokkini G, Sfakianoudis K, Pomeroy KO, Simopoulou M. The Effect of Open and Closed Oocyte Vitrification Systems on Embryo Development: A Systematic Review and Network Meta-Analysis. J Clin Med 2024; 13:2651. [PMID: 38731179 PMCID: PMC11084263 DOI: 10.3390/jcm13092651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/03/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024] Open
Abstract
Background/Objectives: Open and closed vitrification systems are commonly employed in oocyte cryopreservation; however, there is limited evidence regarding a comparison of their separate impact on oocyte competence. This study uniquely brings to the literature, data on the effect of open versus closed vitrification systems on laboratory and clinical outcomes, and the effect of cooling and warming rates. Methods: A systematic search of the literature was performed using the databases PubMed/MEDLINE and the Cochrane Central Library, limited to articles published in English up to January 2023. A network meta-analysis was conducted comparing each vitrification system versus fresh oocytes. Results: Twenty-three studies were included. When compared to fresh oocytes, both vitrification devices resulted in lower fertilization rates per MII oocyte retrieved. When comparing the two systems in terms of survival rates, no statistically significant difference was observed. However, interestingly open systems resulted in lower cleavage and blastocyst formation rates per 2 pronuclear (2PN) oocyte compared to fresh controls, while at the same time no statistically significant difference was detected when comparing closed devices with fresh oocytes. Conclusions: In conclusion, closed vitrification systems appear to exert a less detrimental impact on the oocytes' competence, which is reflected in the blastocyst formation rates. Proof of superiority of one system versus the other may lead to standardization, helping to ultimately determine optimal practice in oocyte vitrification.
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Affiliation(s)
- Konstantinos Pantos
- Centre for Human Reproduction, Genesis Athens Clinic, Papanikoli, 15232 Athens, Greece (A.P.)
| | - Evangelos Maziotis
- Centre for Human Reproduction, Genesis Athens Clinic, Papanikoli, 15232 Athens, Greece (A.P.)
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Anna Trypidi
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sokratis Grigoriadis
- Centre for Human Reproduction, Genesis Athens Clinic, Papanikoli, 15232 Athens, Greece (A.P.)
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Kristi Agapitou
- Centre for Human Reproduction, Genesis Athens Clinic, Papanikoli, 15232 Athens, Greece (A.P.)
| | - Agni Pantou
- Centre for Human Reproduction, Genesis Athens Clinic, Papanikoli, 15232 Athens, Greece (A.P.)
| | - Konstantinos Nikolettos
- Obstetric-Gynecologic Clinic, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece;
| | - Georgia Kokkini
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | | | | | - Mara Simopoulou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
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Pargoo SS, Baniasadi F, Jasemi VSK, Hajiaghalou S, Gharanfoli M, Fathi R. Effect of Moderate Static Magnetic Fields on Mice Oocyte Vitrification: Calcium-Related Genes Expression. Biopreserv Biobank 2024. [PMID: 38527284 DOI: 10.1089/bio.2022.0200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024] Open
Abstract
The ability to cryopreserve oocytes without ultrastructural injury has been a concern in the development and use of methods to preserve female reproduction. The stability of the cell membrane must be preserved to reduce the damage caused by ice crystals during vitrification. One approach that has been explored is the use of static magnetic fields (SMFs), which are believed to influence cell membrane stability. In this study, the in vitro effects of SMF that range between 20-80 mT on the vitrification of mice germinal vesicle (GV) oocytes were studied. The viability and mitochondrial (Mt) membrane potential of both vitrified and nonvitrified oocytes were assessed using Trypan blue and JC1 staining. The high in vitro maturation (IVM) rate and high Mt membrane potential in metaphase II (MII) oocytes were taken into account to determine the optimal magnetic field intensity, that is, 20 mT. None of the SMF conditions resulted in intact spindles in MII oocytes. The study also explored the expression of store-operated calcium entry (Stim1, Orai1, and Ip3r) and meiosis resumption (Ccnb, Cdk) genes in GV and MII oocytes of both vitrified and control groups. The results show that the expressions of Orai1 and Ccnb genes in Vit-MII-SMF oocytes were considerably increased. However, no significant difference in Stim1 expression was observed between the groups. The Vit-MII-SMF group exhibited a significantly higher Ccnb expression compared to other groups. In vitro fertilization (IVF) was performed to evaluate the 2 pronuclear (2PN) rates. The findings demonstrated that using 20 mT SMF improved 2PN rates compared to the nonvitrified groups. This study provides a deeper understanding of the effects of moderate SMF and vitrification on the expression of calcium channel genes in GV and MII oocytes. The results suggest that applying a 20 mT SMF can help prevent cryoinjury and enhance the characteristics of vitrified-warmed oocytes.
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Affiliation(s)
- Sara Soleimani Pargoo
- Department of Cell and Molecular Biology, Faculty of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, Tehran, Iran
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Farzaneh Baniasadi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Vida Sadat Kazemein Jasemi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Samira Hajiaghalou
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mohsen Gharanfoli
- Department of Cell and Molecular Biology, Faculty of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, Tehran, Iran
| | - Rouhollah Fathi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Qiu J, Matsukawa K, Edashige K. Equilibrium vitrification of oocytes using low concentrations of cryoprotectants. Cryobiology 2023; 113:104586. [PMID: 37722470 DOI: 10.1016/j.cryobiol.2023.104586] [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: 04/25/2023] [Revised: 09/05/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
In order to make dry ice transportation of vitrified embryos practical, a near-equilibrium vitrification was developed using a cryoprotectant solution (EDFS10/10a), by which mouse embryos at various stages were vitrified in a near-equilibrium environment. EDFS10/10a consisted of 10% (v/v) ethylene glycol, 10% (v/v) Me2SO, 0.4 M sucrose and 24% (w/v) Ficoll PM70. This method exhibited the benefits of slow freezing and vitrification, with a low risk of osmotic injury. In this study, we investigated whether mouse oocytes are vitrifiable with EDFS10/10a in a highly dehydrated/concentrated state, and whether they can remain fertilizable and developing into embryos after vitrification. When mature mouse oocytes were vitrified in liquid nitrogen and after 4-28 days of storage at -80 °C, high survival rates were observed (88-99%). Vitrified and warmed oocytes were subjected to partial zona dissection and in vitro fertilized. The rate of 2-cell stage was 80-82%. Blastocyst formation rate was 55-70% which was similar to that of embryos derived from fresh oocytes. After the 2-cell embryos were transferred to recipient mice, the implantation and offspring rates did not differ significantly from those of embryos derived from fresh oocytes, indicating that vitrified oocytes retained the developmental ability. Therefore, it is possible to vitrify mouse oocytes in a near-equilibrium state using EDFS10/10a and conveniently transported using dry ice.
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Affiliation(s)
- Juan Qiu
- Reproductive Medicine Center, Longhua Maternity and Child Healthcare Hospital, Shenzhen, Guangdong, China; Laboratory of Animal Science, College of Agriculture, Kochi University, Nankoku, Kochi, Japan
| | - Kazutsugu Matsukawa
- Laboratory of Animal Science, College of Agriculture, Kochi University, Nankoku, Kochi, Japan
| | - Keisuke Edashige
- Laboratory of Animal Science, College of Agriculture, Kochi University, Nankoku, Kochi, Japan.
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Casciani V, Monseur B, Cimadomo D, Alvero R, Rienzi L. Oocyte and embryo cryopreservation in assisted reproductive technology: past achievements and current challenges. Fertil Steril 2023; 120:506-520. [PMID: 37290552 DOI: 10.1016/j.fertnstert.2023.06.005] [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: 02/09/2023] [Revised: 05/27/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Cryopreservation has revolutionized the treatment of infertility and fertility preservation. This review summarizes the milestones that paved the way to the current routinary clinical implementation of this game-changing practice in assisted reproductive technology. Still, evidence to support "the best practice" in cryopreservation is controversial and several protocol adaptations exist that were described and compared here, such as cumulus-intact vs. cumulus-free oocyte cryopreservation, artificial collapse, assisted hatching, closed vs. open carriers, and others. A last matter of concern is whether cryostorage duration may impact oocyte/embryo competence, but the current body of evidence in this regard is reassuring. From social and clinical perspectives, oocyte and embryo cryopreservation has evolved from an afterthought when assisted reproduction was intended for immediate pregnancy with supernumerary embryos of secondary interest to its current purpose, which primarily is to preserve fertility long-term and more comprehensively allow for family planning. However, the initial consenting process, which still is geared to short-term fertility care, may no longer be relevant when the individuals that initially preserved the tissues have completed their reproductive journey. A more encompassing counseling model is required to address changing patient values over time.
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Affiliation(s)
- Valentina Casciani
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Brent Monseur
- Stanford Fertility and Reproductive Health, Stanford University, Sunnyvale, California
| | - Danilo Cimadomo
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Ruben Alvero
- Stanford Fertility and Reproductive Health, Stanford University, Sunnyvale, California
| | - Laura Rienzi
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy; Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy.
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Montgomery K, Montgomery S, Campbell A, Nash DM. A comparison of the morphokinetic profiles of embryos developed from vitrified versus fresh oocytes. Reprod Biomed Online 2023; 47:51-60. [PMID: 37188558 DOI: 10.1016/j.rbmo.2023.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/13/2023] [Accepted: 02/21/2023] [Indexed: 03/06/2023]
Abstract
RESEARCH QUESTION Do morphokinetic profiles and treatment outcomes differ between embryos developed from vitrified or fresh oocytes? DESIGN Retrospective multicentre analysis using data from eight CARE Fertility clinics across the UK between 2012 and 2019. Patients receiving treatment using embryos developed from vitrified oocytes (n = 118 women, n = 748 oocytes), providing 557 zygotes during this time period, were recruited and matched with patients undergoing treatment with embryos developed from fresh oocytes (n = 123 women, n = 1110 oocytes), providing 539 zygotes in the same time frame. Time-lapse microscopy was used to assess morphokinetic profiles, including early cleavage divisions (2- through to 8-cell), post-cleavage stages including time to start of compaction, time to morula, time to start of blastulation and time to full blastocyst. Duration of key stages such as the compaction stage were also calculated. Treatment outcomes were compared between the two groups (live birth rate, clinical pregnancy rate and implantation rate). RESULTS A significant delay of 2-3 h across all early cleavage divisions (2- through to 8-cell) and time to start of compaction occurred in the vitrified group versus fresh controls (all P ≤ 0.01). The compaction stage was significantly shorter in vitrified oocytes (19.02 ± 0.5 h) compared with fresh controls (22.45 ± 0.6 h, P < 0.001). There was no difference in the time that fresh and vitrified embryos reached the blastocyst stage (108.03 ± 0.7 versus 107.78 ± 0.6 h). There was no significant difference in treatment outcomes between the two groups. CONCLUSION Vitrification is a useful technique for extending female fertility with no effects on IVF treatment outcome.
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Affiliation(s)
- Kathryn Montgomery
- Department of Life Sciences, Aberystwyth University, Penglais, Aberystwyth, Ceredigion, UK
| | - Susan Montgomery
- CARE Fertility Manchester, 108-112 Daisy Bank Road, Victoria Park, Manchester, UK
| | - Alison Campbell
- CARE Fertility Manchester, 108-112 Daisy Bank Road, Victoria Park, Manchester, UK.
| | - Deborah Mary Nash
- Department of Life Sciences, Aberystwyth University, Penglais, Aberystwyth, Ceredigion, UK
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Angel-Velez D, De Coster T, Azari-Dolatabad N, Fernández-Montoro A, Benedetti C, Pavani K, Van Soom A, Bogado Pascottini O, Smits K. Embryo morphokinetics derived from fresh and vitrified bovine oocytes predict blastocyst development and nuclear abnormalities. Sci Rep 2023; 13:4765. [PMID: 36959320 PMCID: PMC10036495 DOI: 10.1038/s41598-023-31268-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
Embryo development is a dynamic process and critical stages may go unnoticed with the use of traditional morphologic assessments, especially the timing of embryonic divisions and aberrant zygotic cleavage patterns. Bovine embryo development is impaired after oocyte vitrification, but little is known about the underlying morphokinetic behavior. Here, bovine zygotes from fresh (n = 708) and vitrified oocytes (n = 182) were monitored by time-lapse imaging and the timing and nature of early blastomere divisions were modeled to find associations with blastocyst development at day 8. The predictive potential of morphokinetic parameters was analyzed by logistic regression and receiver operating characteristic curve analysis to determine optimal cut-off values. Lag-phase was highly correlated with embryo development. Remarkably, 100% of zygotes that reached the blastocyst stage showed a lag-phase. Fast first cleavage increased the chance of blastocyst development to 30% with a cut-off of 32 h and 22 min. Aberrant zygotic cleavage events, including multipolar division, unequal blastomere sizes, and membrane ruffling resulted in decreased blastocyst development. Multipolar division leads to uneven blastomeres, which was associated with anuclear and multinuclear blastomeres, indicating genome segregation errors. Moreover, we described for the first time morphokinetics of embryos derived from vitrified bovine oocytes. Vitrification severely affected blastocyst development, although lower cryoprotectant concentration in equilibration solutions seems to be less detrimental for embryo yield. Impaired development was linked to slow cleavages, lower lag-phase incidence, and increased early embryonic arrest. Typically, less than 15% of the embryos produced from vitrified oocytes reached more than eight cells. Interestingly, the rate of abnormal first cleavage events was not affected by oocyte vitrification. In conclusion, time to first cleavage, the presence of a lag-phase, and the absence of aberrant zygotic cleavage were the best predictors of bovine blastocyst development for both fresh and vitrified oocytes.
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Affiliation(s)
- Daniel Angel-Velez
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium.
- Research Group in Animal Sciences - INCA-CES, Universidad CES, Medellin, Colombia.
| | - Tine De Coster
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Nima Azari-Dolatabad
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Andrea Fernández-Montoro
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Camilla Benedetti
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Krishna Pavani
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
- Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Gent, Belgium
| | - Ann Van Soom
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Osvaldo Bogado Pascottini
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Katrien Smits
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
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Gursu T, Goksever Celik H, Eraslan A, Angun B, Ozaltin S, Yeh J, Bastu E. Comparison of pregnancy outcomes of 7515 same donor oocyte cycle fresh and cryopreserved-thawed oocytes in 609 donor oocyte recipient cycles: A single institution analysis. Eur J Obstet Gynecol Reprod Biol 2022; 277:110-115. [PMID: 36067608 DOI: 10.1016/j.ejogrb.2022.08.015] [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: 04/08/2022] [Revised: 07/07/2022] [Accepted: 08/21/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Oocyte donation (OD) cycles have been used extensively over the last decades due to high success regarding live birth rate (LBR). We evaluated the reproductive outcomes of fresh and vitrified sibling oocytes in terms of fertilization rates, blast ratio, clinical pregnancy rates, and LBR. MATERIALS AND METHODS This retrospective cohort study was conducted at a tertiary in vitro fertilization (IVF) center. A total of 7515 metaphase II (MII) donor oocytes from 304 donor cycles for 609 oocyte recipients undergoing embryo transfers with either fresh or cryopreserved-thawed donor oocytes. Donor cycles that provided both 12 fresh MII oocytes to be used for one recipient and at least 12 MII oocytes which were suitable for vitrification to be used for another recipient at another time were analyzed. Fertilization rates, blastocyst ratios, clinical pregnancy rates (CPR), LBR were evaluated as main outcome measures. RESULTS When the fresh and cryopreserved-thawed OD cycles were compared, there was no significant differences between two groups in terms of age of the recipient (41.9 ± 5.7 and 40.3 ± 6.8, p = NS), number of MII oocytes (12.1 ± 0.3 and 12.6 ± 0.8, p = NS), number of 2 pronuclear (PN) (9.1 ± 1.6 and 9.7 ± 2.0, p = NS), blastocyst ratio (58.9 ± 21.7 and 51.3 ± 21.2, p = NS) and number of transferred embryos (1.9 ± 0.3 and 1.9 ± 0.3, p = NS). There was no significant difference between fresh and cryopreserved-thawed sibling donor oocyte cycles in terms of CPR (66.8 % and 60.7 % respectively, p = NS) or LBR (59.5 % and 55.1 %, respectively; p = NS). Miscarriage and multiple gestation rates were similar between groups (p = NS). Log-binomial regression analysis revealed that the use of fresh sibling oocytes was not associated with CPR or LBR, when compared to cryopreserved-thawed oocytes. CONCLUSIONS There was no significant difference in terms of reproductive outcomes between sibling fresh OD and cryopreserved-thawed OD cycles.
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Affiliation(s)
- Turkan Gursu
- University of Health Sciences, Istanbul Zeynep Kamil Maternity and Children's Training and Research Hospital, Department of Obstetrics and Gynecology, Istanbul, Turkey
| | - Hale Goksever Celik
- Acibadem Fulya Hospital, Department of Obstetrics and Gynecology, IVF and Endometriosis Center, Istanbul, Turkey.
| | - Alper Eraslan
- Dunya IVF Center, Department of Reproductive Endocrinology and Infertility, Kyrenia, Cyprus
| | - Berk Angun
- Dunya IVF Center, Department of Reproductive Endocrinology and Infertility, Kyrenia, Cyprus.
| | - Selin Ozaltin
- Acibadem Fulya Hospital, Department of Obstetrics and Gynecology, IVF and Endometriosis Center, Istanbul, Turkey
| | - John Yeh
- University of Harvard Medical School, Department of Obstetrics and Gynecology, Boston, MA, USA
| | - Ercan Bastu
- Biruni University, Department of Obstetrics and Gynecology, Istanbul, Turkey; UMass Chan Medical School, Worcester, USA
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Chang CC, Shapiro DB, Nagy ZP. The effects of vitrification on oocyte quality. Biol Reprod 2021; 106:316-327. [PMID: 34962575 DOI: 10.1093/biolre/ioab239] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/13/2021] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Abstract
Vitrification, is an ultra-rapid, manual cooling process that produces glass-like (ice crystal free) solidification. Water is prevented from forming intercellular and intracellular ice crystals during cooling as a result of oocyte dehydration and the use of highly concentrated cryoprotectant. Though oocytes can be cryopreserved without ice crystal formation through vitrification, it is still not clear whether the process of vitrification causes any negative impact (temperature change/chilling effect, osmotic stress, cryoprotectant toxicity, and/or phase transitions) on oocyte quality that translate to diminished embryo developmental potential or subsequent clinical outcomes. In this review, we attempt to assess the technique's potential effects and the consequence of these effects on outcomes.
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Affiliation(s)
- Ching-Chien Chang
- Reproductive Biology Associates, 1100 Johnson Ferry Rd., Ste200, Atlanta, GA 30342, USA
| | - Daniel B Shapiro
- Reproductive Biology Associates, 1100 Johnson Ferry Rd., Ste200, Atlanta, GA 30342, USA
| | - Zsolt Peter Nagy
- Reproductive Biology Associates, 1100 Johnson Ferry Rd., Ste200, Atlanta, GA 30342, USA
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Harada Y, Kinutani M, Horiuchi T. Improved developmental potential of mouse vitrified-warmed oocytes achieved by culturing in recovery medium with glutathione ethyl ester (GSH-OEt). Reprod Med Biol 2021; 20:505-512. [PMID: 34646079 PMCID: PMC8499599 DOI: 10.1002/rmb2.12411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/03/2021] [Accepted: 08/17/2021] [Indexed: 12/22/2022] Open
Abstract
PURPOSE The aim of the present study was to investigate the effect of glutathione ethyl ester (GSH-OEt) in the recovery medium on the developmental competence of mouse vitrified-warmed MII oocytes. METHODS Vitrified-warmed oocytes were incubated for 1 h in recovery medium in the presence or absence of 0.5 mM GSH-OEt. The authors examined the effects of GSH-OEt, first on the levels of glutathione (GSH) and reactive oxygen species (ROS) in vitrified-warmed oocytes, and second, on in vitro blastocyst development, division speed to blastocysts, and total cell numbers of blastocysts from vitrified-warmed oocytes fertilized by Intracytoplasmic sperm injection (ICSI). RESULTS Adding GSH-OEt to the recovery medium significantly (p < 0.05) increased GSH content and decreased ROS levels in vitrified-warmed oocytes. The blastocyst rate did not differ significantly between the two groups, but the speed of development to blastocysts in the GSH-OEt (+) group was significantly more rapid. In addition, the total blastocyst cell number was significantly higher in the GSH-OEt (+) group than in the GSH-OEt (-) group (92.8 ± 5.1 vs. 71.4 ± 3.5, p < 0.01). CONCLUSION Adding GSH-OEt to the recovery medium of vitrified-warmed mouse oocytes enhances the development potential of oocytes and improves the quality of blastocysts.
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Affiliation(s)
| | | | - Toshitaka Horiuchi
- Emeritus Professor of Prefectural University of HiroshimaHiroshimaJapan
- Institute for Advanced Reproductive MedicineOchi Yume Clinic NagoyaNagoyaJapan
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Lierman S, Tolpe A, De Croo I, De Gheselle S, Defreyne J, Baetens M, Dheedene A, Colman R, Menten B, T'Sjoen G, De Sutter P, Tilleman K. Low feasibility of in vitro matured oocytes originating from cumulus complexes found during ovarian tissue preparation at the moment of gender confirmation surgery and during testosterone treatment for fertility preservation in transgender men. Fertil Steril 2021; 116:1068-1076. [PMID: 33832736 DOI: 10.1016/j.fertnstert.2021.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To study the feasibility of in vitro maturation of ovarian tissue oocytes for fertility preservation in transgender men on testosterone treatment. DESIGN Cross-sectional study SETTING: University hospital PATIENT(S): Eighty-three transgender men enrolled from November 2015 to January 2019 INTERVENTION(S): In vitro maturation of cumulus-oocyte complexes (COCs) harvested at the time of gender confirmation surgery, and fertilization through intracytoplasmic sperm injection. MAIN OUTCOME MEASURE(S) In vitro maturation, fertilization, and blastulation rates; comparison of morphokinetics with vitrified-warmed oocytes; and analysis of the genetic profiles of embryos. SECONDARY OUTCOMES association between serum hormone levels; COCs' morphologic characteristics, and vitrification rate. RESULT(S) All participants were on testosterone treatment for a median of 83 (64[Quartile 1]; 113.2[Quartile 2]) weeks. A total of 1,903 COCs (mean per participant, 23 ± 15.8) were collected. The in vitro maturation rate was 23.8%, vitrification rate was 21.5%, and survival rate after warming was 72.6% (n = 151). Intracytoplasmic sperm injection was performed in 139 oocytes. The rate of normal fertilized oocytes was 34.5%, and 25 (52.1%) embryos reached day 3. One blastocyst was achieved on day 5. Aberrant cleavage patterns and early embryo arrest were observed in 22 (45.8%) and 44 (91.7%) zygotes, respectively. Compared with vitrified-warmed donor oocytes, a delay was observed in pronuclei disappearance, t2 (time to reach 2 cell stage) timings, and CC1 (the duration of the 1st cell cycle) and SS3 (synchronization of cleavage pattern (calculated as t8-t5) time intervals. A normal genetic pattern was seen in 42% embryos. The proportion of vitrified oocytes was negatively associated with progesterone (odds ratio, 0.76) and positively associated with antimüllerian hormone serum levels (odds ratio, 1.23). The highest vitrification rate was achieved by the morphologic characteristic 344 at day 0 and by 433 at day 2. CONCLUSION(S) Ovarian tissue oocytes matured in vitro show low developmental capacity in transgender men, when collected under testosterone treatment.
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Affiliation(s)
- Sylvie Lierman
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Annelies Tolpe
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Ilse De Croo
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - Justine Defreyne
- Department of Endocrinology - Center for Sexology and Gender, Ghent University Hospital, Ghent, Belgium
| | - Machteld Baetens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Annelies Dheedene
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Roos Colman
- Biostatistics Unit, Ghent University Hospital, Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Guy T'Sjoen
- Department of Endocrinology - Center for Sexology and Gender, Ghent University Hospital, Ghent, Belgium
| | - Petra De Sutter
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Kelly Tilleman
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium.
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