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Valente RS, Marsico TV, Sudano MJ. Basic and applied features in the cryopreservation progress of bovine embryos. Anim Reprod Sci 2022; 239:106970. [DOI: 10.1016/j.anireprosci.2022.106970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/10/2022] [Accepted: 03/19/2022] [Indexed: 11/30/2022]
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Ma Y, Liu X, Shi G, Liu Y, Zhou S, Hou W, Xu Y. Storage Time of Cryopreserved Embryos and Pregnancy Outcomes: A Dose-Response Meta-Analysis. Geburtshilfe Frauenheilkd 2021; 81:311-320. [PMID: 33692592 PMCID: PMC7938942 DOI: 10.1055/a-1326-1830] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/29/2020] [Indexed: 01/11/2023] Open
Abstract
Purpose Cryopreservation techniques have become an essential part of assisted reproduction technology. Embryos may be cryopreserved for several years before transfer, and the safety of long-term cryopreservation needs to be considered. This dose-response meta-analysis was conducted to evaluate whether there were dose-response relationships between the storage time of cryopreserved embryos and pregnancy outcomes such as survival rate, implantation rate, miscarriage rate, clinical pregnancy rate, and congenital malformation rate. Methods After searching the databases PubMed, Embase, MEDLINE, CCRT and related reviews up until June 4, 2020, seven studies were included for analysis. Two reviewers extracted the relevant information and independently assessed the study quality using the Newcastle-Ottawa scale. Potential linear or non-linear dose-response relationships were assessed with a random-effect dose-response meta-analysis. Results No dose-response association was found between duration of embryo cryostorage and survival rate, implantation rate, miscarriage rate, clinical pregnancy rate or congenital malformation rate. Conclusion The interval between the start of embryo cryopreservation and frozen/thawed embryo transfer does not influence pregnancy outcomes.
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Affiliation(s)
- Yuanlin Ma
- Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Xiaochen Liu
- Sun Yat-sen University Zhongshan School of Medicine, Guangzhou, China
| | - Gaohui Shi
- Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Yongxiang Liu
- Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Shurui Zhou
- Sun Yat-sen University Zhongshan School of Medicine, Guangzhou, China
| | - Wenhui Hou
- Zhengzhou University First Affiliated Hospital, Zhengzhou, China
| | - Yanwen Xu
- Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
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Cryostorage duration does not affect pregnancy and neonatal outcomes: a retrospective single-centre cohort study of vitrified–warmed blastocysts. Reprod Biomed Online 2018; 36:614-619. [DOI: 10.1016/j.rbmo.2018.03.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 02/18/2018] [Accepted: 03/07/2018] [Indexed: 11/19/2022]
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Bertolin K, Meinsohn MC, Suzuki J, Gossen J, Schoonjans K, Duggavathi R, Murphy BD. Ovary-specific depletion of the nuclear receptor Nr5a2 compromises expansion of the cumulus oophorus but not fertilization by intracytoplasmic sperm injection†. Biol Reprod 2017; 96:1231-1243. [DOI: 10.1093/biolre/iox045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/17/2017] [Indexed: 11/14/2022] Open
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Papatheodorou A, Vanderzwalmen P, Panagiotidis Y, Petousis S, Gullo G, Kasapi E, Goudakou M, Prapas N, Zikopoulos K, Georgiou I, Prapas Y. How does closed system vitrification of human oocytes affect the clinical outcome? A prospective, observational, cohort, noninferiority trial in an oocyte donation program. Fertil Steril 2016; 106:1348-1355. [DOI: 10.1016/j.fertnstert.2016.07.1066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 06/17/2016] [Accepted: 07/11/2016] [Indexed: 12/23/2022]
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Combined inhibitory effects of low temperature and N-acetyl-l-cysteine on the postovulatory aging of mouse oocytes. ZYGOTE 2015; 24:195-205. [PMID: 25801325 DOI: 10.1017/s0967199415000039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The postovulatory aging of oocytes eventually affects the development of oocytes and embryos. Oxidative stress is known to accelerate the onset of apoptosis in oocytes and influence their capacity for fertilisation. This study aimed to reveal the roles of temperature and the antioxidant N-acetyl-l-cysteine in preventing the aging of postovulatory mouse oocytes. First, newly ovulated mouse oocytes were cultured at various temperature and time combinations in HCZB medium with varying concentrations of N-acetyl-l-cysteine to assess signs of aging and developmental potential. When cultured in HCZB with 300 μM N-acetyl-l-cysteine at different temperature and incubation time combinations (namely 25°C for 12 h, 15°C for 24 h and 5°C for 12 h), the increase in the susceptibility of oocytes to activating stimuli was efficiently prevented, and the developmental potential was maintained following Sr2+ activation or in vitro fertilisation. After incubation at either 15°C for 36 h or 5°C for 24 h, oocytes that had decreased blastocyst rates displayed unrecoverable abnormal cortical granule distribution together with decreased BCL2 levels, total glutathione concentrations and glutathione/glutathione disulphide (GSH/GSSG) ratios. In conclusion, postovulatory oocyte aging could be effectively inhibited by appropriate N-acetyl-l-cysteine addition at low temperatures. In addition, a simple method for the temporary culture of mature oocytes was established.
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Jung J, Shin H, Bang S, Mok HJ, Suh CS, Kim KP, Lim HJ. Analysis of the phospholipid profile of metaphase II mouse oocytes undergoing vitrification. PLoS One 2014; 9:e102620. [PMID: 25033391 PMCID: PMC4102530 DOI: 10.1371/journal.pone.0102620] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 06/19/2014] [Indexed: 11/18/2022] Open
Abstract
Oocyte freezing confers thermal and chemical stress upon the oolemma and various other intracellular structures due to the formation of ice crystals. The lipid profiles of oocytes and embryos are closely associated with both, the degrees of their membrane fluidity, as well as the degree of chilling and freezing injuries that may occur during cryopreservation. In spite of the importance of lipids in the process of cryopreservation, the phospholipid status in oocytes and embryos before and after freezing has not been investigated. In this study, we employed mass spectrometric analysis to examine if vitrification has an effect on the phospholipid profiles of mouse oocytes. Freshly prepared metaphase II mouse oocytes were vitrified using copper grids and stored in liquid nitrogen for 2 weeks. Fresh and vitrified-warmed oocytes were subjected to phospholipid extraction procedure. Mass spectrometric analyses revealed that multiple species of phospholipids are reduced in vitrified-warmed oocytes. LIFT analyses identified 31 underexpressed and 5 overexpressed phospholipids in vitrified mouse oocytes. The intensities of phosphatidylinositol (PI) {18∶2/16∶0} [M-H]- and phosphatidylglycerol (PG) {14∶0/18∶2} [M-H]- were decreased the most with fold changes of 30.5 and 19.1 in negative ion mode, respectively. Several sphingomyelins (SM) including SM {d38∶3} [M+H]+ and SM {d34∶0} [M+K]+ were decreased significantly in positive ion mode. Overall, the declining trend of multiple phospholipids demonstrates that vitrification has a marked effect on phospholipid profiles of oocytes. These results show that the identified phospholipids can be used as potential biomarkers of oocyte undergoing vitrification and will allow for the development of strategies to preserve phospholipids during oocyte cryopreservation.
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Affiliation(s)
- Jaehun Jung
- Department of Pharmacology, Konkuk University School of Medicine, Seoul, Korea
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
| | - Hyejin Shin
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
| | - Soyoung Bang
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
| | - Hyuck Jun Mok
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
- * E-mail: (KPK); (HJL)
| | - Hyunjung Jade Lim
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
- * E-mail: (KPK); (HJL)
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Chian RC, Wang Y, Li YR. Oocyte vitrification: advances, progress and future goals. J Assist Reprod Genet 2014; 31:411-20. [PMID: 24477781 DOI: 10.1007/s10815-014-0180-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 01/17/2014] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Recent advances in vitrification technology have markedly improved the efficacy of oocyte cryopreservation in terms of oocyte survival and pregnancy, as well as live birth rates. However, there still remains room for improvement in terms of vitrification techniques. OBJECTIVE The remaining challenges include the development of a less cytotoxic vitrification solution and of a safe vitrification device in order to have vitrification techniques considered as a standard clinical laboratory procedure. METHODS A systematic electronic literature search strategy has been conducted using PubMed (Medline) databases with the use of the following key words: oocyte, vitrification, cryoprotectant, preservation, pregnancy, and live birth. A list of published papers focused on the improvement of vitrification techniques to have the vitrification protocol standardized have been evaluated in full text for this review. Only key references were cited. CONCLUSIONS Vitrification technology has made significant advancements and holds great promise, but many issues remains to be addressed before it becomes a standardized procedure in clinical laboratories such as the fact that oocyte vitrification may not require a high concentration of cryoprotectant in the vitrification solution when it has a suitable cooling and warming rate. There is also no consistent evidence that indicates the absence of risk to the vitrified oocytes when they are stored for a prolonged period of time in direct-contact with liquid nitrogen. The long-term development of infants born as a result of this technology equally remains to be evaluated.
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Affiliation(s)
- Ri-Cheng Chian
- Division of Research, Department of Obstetrics and Gynecology, McGill University, Montreal, Quebec, Canada,
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Wang TY, Li Q, Li Q, Li H, Zhu J, Cui W, Jiao GZ, Tan JH. Non-frozen preservation protocols for mature mouse oocytes dramatically extend their developmental competence by reducing oxidative stress. Mol Hum Reprod 2013; 20:318-29. [DOI: 10.1093/molehr/gat088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Panagiotidis Y, Vanderzwalmen P, Prapas Y, Kasapi E, Goudakou M, Papatheodorou A, Passadaki T, Petousis S, Nikolettos N, Veletza S, Prapas N, Maroulis G. Open versus closed vitrification of blastocysts from an oocyte-donation programme: a prospective randomized study. Reprod Biomed Online 2013; 26:470-6. [DOI: 10.1016/j.rbmo.2013.01.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 01/23/2013] [Accepted: 01/24/2013] [Indexed: 10/27/2022]
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Vanderzwalmen P, Zech NH, Ectors F, Stecher A, Lejeune B, Vanderzwalmen S, Wirleitner B. Blastocyst transfer after aseptic vitrification of zygotes: an approach to overcome an impaired uterine environment. Reprod Biomed Online 2012; 25:591-9. [DOI: 10.1016/j.rbmo.2012.09.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 08/02/2012] [Accepted: 09/05/2012] [Indexed: 11/26/2022]
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Li Q, Wang G, Zhang J, Zhou P, Wang TY, Cui W, Luo MJ, Tan JH. Combined Inhibitory Effects of Pyruvate and Low Temperature on Postovulatory Aging of Mouse Oocytes1. Biol Reprod 2012; 87:105. [DOI: 10.1095/biolreprod.112.103127] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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The Alpha consensus meeting on cryopreservation key performance indicators and benchmarks: proceedings of an expert meeting. Reprod Biomed Online 2012; 25:146-67. [DOI: 10.1016/j.rbmo.2012.05.006] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 05/11/2012] [Accepted: 05/17/2012] [Indexed: 11/20/2022]
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