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Wang R, Li D, Zhao L, Zhu Q, Sun L, Xue S, Lyu Q. External bending of cryodevice during vitrification leads to cryoprotectant cracks and damage to embryo blastomeres. Reprod Biomed Online 2024; 48:103763. [PMID: 38452604 DOI: 10.1016/j.rbmo.2023.103763] [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: 08/10/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 03/09/2024]
Abstract
RESEARCH QUESTION Embryo blastomeres and the zona pellucida are occasionally damaged during vitrification; is this a result of crack-induced mechanical damage in the glass state, caused by external bending of the device? DESIGN A stereomicroscope was used to observe external bending-induced cracks in a cryoprotectant. Thereafter, 309 human cleavage-stage embryos derived from abnormally fertilized eggs were used to assess embryo damage under two external bending conditions: forward bending and backward bending, with three bending degrees applied. Three distinct embryo positions were used to examine the correlation between bending and embryo damage. Damage was assessed by looking at blastomere lysis rates, and overall rates of damaged and surviving embryos. RESULTS A series of parallel cracks were identified in the cryoprotectant used for external bending, which led to damage to the embryo blastomeres. Compared with forward bending and control, the embryos were found to be more easily damaged by backward bending, indicated by significantly higher blastomere lysis and embryo damage rates, and lower embryo survival rate of backward bending than forward bending (P < 0.001). The degree of embryo damage also increased as the degree of external forces increased. Embryo position correlated with degree of embryo damage. CONCLUSIONS Cryoprotectant crack-induced damage was identified as the cause of embryo damage. Mechanical damage to the glass state occurs because of improper external bending of the cryodevice strip in liquid nitrogen during vitrification. To prevent damage, bending of the strip should be avoided and the embryos should be placed near the tip of the strip.
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Affiliation(s)
- Rongxiang Wang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China.; Center for Reproductive Medicine, Shanghai East Hospital, Tongji University School of Medicine, 1800 Yuntai Rd, Shanghai 200120, China.; School of Life Sciences and Technology, Tongji University, 1239 Siping Rd, Shanghai 200092, China
| | - Danjun Li
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China
| | - Leiwen Zhao
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China
| | - Qianqian Zhu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China
| | - Lihua Sun
- Center for Reproductive Medicine, Shanghai East Hospital, Tongji University School of Medicine, 1800 Yuntai Rd, Shanghai 200120, China
| | - Songguo Xue
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China.; Center for Reproductive Medicine, Shanghai East Hospital, Tongji University School of Medicine, 1800 Yuntai Rd, Shanghai 200120, China..
| | - Qifeng Lyu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai 200011, China..
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Vitrification and in-straw warming do not affect pregnancy rates of biopsied bovine embryos. Theriogenology 2022; 191:221-230. [PMID: 35998405 DOI: 10.1016/j.theriogenology.2022.07.021] [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: 06/08/2022] [Revised: 07/27/2022] [Accepted: 07/31/2022] [Indexed: 11/22/2022]
Abstract
In the cattle industry, in vivo or in vitro embryo production combined with genotyping and cryopreservation technologies allows the selection and conservation of embryos carrying genes for desirable traits. This study aimed to assess the efficiency of a vitrification method suitable for in-straw warming of biopsied in vivo derived (IVD) bovine embryos. Three experiments were carried out using two methodologies: the Cryotop®, the gold standard vitrification and 3-step warming methodology, or the VitTrans, a vitrification/in-straw 1-step warming method that enables direct embryo transfer to the uterus. In experiment 1, intact and biopsied in vitro produced (IVP) day 7 expanded blastocysts were vitrified using the Cryotop® and warmed in 1- or 3-steps. No differences in survival rates were recorded at 24 h after warming for intact or biopsied IVP blastocysts irrespective of the warming procedure. In experiment 2, the effect of the time from trophectoderm (TE) biopsy to vitrification/in-straw warming on post-warming survival rate was assessed. No significant differences in survival were observed when blastocysts were vitrified/in-straw warmed immediately after biopsy or after 3 h in culture when compared to intact blastocysts. In experiment 3, IVD embryos were vitrified 3 h after biopsy using the Cryotop® or the VitTrans method and pregnancy rates were assessed at day 60 after transfer. Fresh, biopsied embryos served as control. Similar pregnancy rates were observed when IVD biopsied embryos were transferred fresh or vitrified/warmed by the Cryotop® or VitTrans method. No significant effect of the embryo quality or developmental stage was detected on the percentage of pregnant recipients when IVD biopsied embryos were transferred fresh or after vitrification. While fresh female IVD embryos produced significantly higher pregnancy rates than male embryos, there were no differences in pregnancy rates when male or female vitrified/warmed embryos were transferred. About 81% from the biopsies analyzed successfully determined the embryo sex, confirming that DNA was there, and it was efficiently amplified. To conclude, our findings indicate that both vitrification methodologies produced similar post-warming outcomes for both intact and biopsied IVP embryos. Besides, vitrification/in-straw warming of biopsied IVD bovine embryos did not affect the viability to originate pregnancy, being a useful option for their direct transfer in field conditions.
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Mao Y, Tang N, Luo Y, Yin P, Li L. Effects of vitrified cryopreservation duration on IVF and neonatal outcomes. J Ovarian Res 2022; 15:101. [PMID: 36076245 PMCID: PMC9454210 DOI: 10.1186/s13048-022-01035-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/29/2022] [Indexed: 11/19/2022] Open
Abstract
Background In this study, we aimed to evaluate the impact of the duration of cryopreservation storage on embryo viability, implantation competence, pregnancy outcome and neonatal outcomes. Methods We retrospectively evaluated the outcomes of patients who underwent IVF with vitrified cryopreserved embryos between January 2004 and August 2019 by following the first frozen embryo transfer cycles within the study period. A total of 31,143 patients met the inclusion criteria and were grouped according to the embryo storage time as follows: Group 1 (n = 20,926),1–90 days; Group 2 (n = 6,472), 91–180 days; Group 3 (n = 2,237), 181–365 days; Group 4 (n = 746), 366–730 days; and Group 5 (n = 762), > 731 days. Results The embryo survival rate decreased significantly with longer durations of cryopreservation. The highest and lowest survival rate was recorded in Group 1 and Group 5, respectively (34853/35338; 98.63% vs. 1281/1801; 71.13%; P < 0.01). The human chorionic gonadotropin (HCG) detection and clinical pregnancy rate was highest in Group 1 (57.85% and 55. 26%, respectively; P < 0.01). Short-term cryopreservation (≤ 3 months) is associated with higher rates of clinical pregnancy. There were no significant differences in neonatal birth weight, neonatal height and congenital anomalies among the groups (P > 0. 05). Conclusion The prolonged storage time of vitrified embryos negatively affected survival rate and clinical pregnancy rate. It did not have a significant influence on neonatal health. This study provides new findings about the relationship between prolonged storage time of vitrified embryos and clinical outcomes and offers evidence for the safety of using long-stored embryos after vitrification.
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Affiliation(s)
- Yuling Mao
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ni Tang
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yanfen Luo
- Department of Medicine Laboratory, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Medicine Laboratory, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Ping Yin
- Department of Clinical Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
| | - Lei Li
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. .,Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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Gao Z, Li W, Zhang H, Yang Z, Zhao X, Wei Q, Ma B. Effects of nylon mesh vitrification on the cytoskeleton, mitochondria, and aquaporins of mouse 2-cell embryos. In Vitro Cell Dev Biol Anim 2022; 58:638-642. [PMID: 36074254 DOI: 10.1007/s11626-022-00715-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/10/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Zhen Gao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Wei Li
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Hui Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Zhenshan Yang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Xiaoe Zhao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Qiang Wei
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Baohua Ma
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
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Lan T, Zhang K, Lin F, He Q, Wu S, Xu Z, Zhang Y, Quan F. Effects of MICU1-Mediated Mitochondrial Calcium Uptake on Energy Metabolism and Quality of Vitrified-Thawed Mouse Metaphase II Oocytes. Int J Mol Sci 2022; 23:ijms23158629. [PMID: 35955764 PMCID: PMC9368797 DOI: 10.3390/ijms23158629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 12/10/2022] Open
Abstract
Background: Oocyte vitrification has been widely used in the treatment of infertility and fertility preservation. However, vitrification-induced mitochondrial damage adversely affects oocyte development. Several studies have reported that mitochondrial calcium uptake protein 1 (MICU1) regulates the uptake of mitochondrial calcium by the mitochondrial calcium uniporter (MCU) and subsequently controls aerobic metabolism and oxidative stress in mitochondria, but research considering oocytes remains unreported. We evaluated whether the addition of MICU1 modulators enhances mitochondrial activity, pyruvate metabolism, and developmental competence after warming of MII oocytes. Methods: Retrieved MII oocytes of mice were classified as vitrified or control groups. After thawing, oocytes of vitrified group were cultured with or without DS16570511 (MICU1 inhibitor) and MCU-i4 (MICU1 activator) for 2 h. Results: Mitochondrial Ca2+ concentration, pyruvate dephosphorylation level, and MICU1 expression of MII oocytes were significantly increased after vitrification. These phenomena were further exacerbated by the addition of MCU-i4 and reversed by the addition of DS16570511 after warming. However, the mitochondrial membrane potential (MMP) and adenosine triphosphate (ATP) in vitrified-warmed MII oocytes drop significantly after vitrification, which was improved after MCU-i4 treatment and decreased significantly after DS16570511 treatment. The vitrification process was able to elicit a development competence reduction. After parthenogenetic activation, incubation of the thawed oocytes with MCU-i4 did not alter the cleavage and blastocyst rates. Moreover, incubation of the thawed oocytes with DS16570511 reduced the cleavage and blastocyst rates. Conclusions: MICU1-mediated increasing mitochondrial calcium uptake after vitrification of the MII oocytes promoted the pyruvate oxidation, and this process may maintain oocyte development competence by compensating for the consumption of ATP under stress state.
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Gupta A, Reshma G B, Singh P, Kohli E, Sengupta S, Ganguli M. A Combination of Synthetic Molecules Acts as Antifreeze for the Protection of Skin against Cold-Induced Injuries. ACS APPLIED BIO MATERIALS 2022; 5:252-264. [PMID: 35014815 DOI: 10.1021/acsabm.1c01058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Seasonal and occupational exposure of the human body to extreme cold temperatures can result in cell death in the exposed area due to the formation of ice crystals. This leads to superficial or deep burn injury and compromised functionality. Currently available therapeutics can be ineffective in extreme cases, and thus, it is necessary to develop prophylactic strategies. In this study, we have devised a combination of known synthetic cryopreservative agents (termed SynAFP) and evaluated their potential antifreeze applications on skin. The prophylactic activity of SynAFP in vitro is indicated by improved cellular revival and cell viability, retention of the cytoskeleton, and normal cell cycle progression even after cold stress. A comprehensive whole-cell proteomic approach revealed that in the presence of SynAFP, cold-induced downregulation of proteins involved in cell-cell adhesion and upregulation of those related to mitochondrial stress were ameliorated. Pre-application of SynAFP in mice facing a frostbite challenge prevents their skin from incurring significant injury as confirmed through macroscopic and histological examination. Moreover, multiple applications of SynAFP on mouse skin at room temperature did not compromise skin integrity. SynAFP was also formulated in anAloe vera-based cream (referred to as fSynAFP), which offered similar protection under cold stress conditions. Thus, SynAFP can be considered as a potential candidate for formulating a topical intervention for protection from cold-induced injuries to skin.
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Affiliation(s)
- Aanchal Gupta
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Betsy Reshma G
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Praveen Singh
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ekta Kohli
- Neurobiology Division, DIPAS, DRDO, Lucknow Road, Timarpur, Delhi 110054, India
| | - Shantanu Sengupta
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Munia Ganguli
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Berteli TS, Vireque AA, Da Luz CM, Borges ED, Ferreira CR, Navarro PA. Equilibration solution composition and extended exposure to equilibration phase affect embryo development and lipid profile of mouse oocytes. Reprod Biomed Online 2022; 44:961-975. [DOI: 10.1016/j.rbmo.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/25/2021] [Accepted: 01/13/2022] [Indexed: 10/19/2022]
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USHIGOME N, WAKAYAMA S, YAMAJI K, ITO D, OOGA M, WAKAYAMA T. Production of offspring from vacuum-dried mouse spermatozoa and assessing the effect of drying conditions on sperm DNA and embryo development. J Reprod Dev 2022; 68:262-270. [PMID: 35676029 PMCID: PMC9334318 DOI: 10.1262/jrd.2022-048] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Freeze-dried sperm (FD sperm) are of great value because they can be stored at room temperature for long periods of time, However, the birth rate of offspring derived from FD sperm is low
and the step in the freeze-drying process particularly responsible for low offspring production remains unknown. In this study, we determined whether the drying process was responsible for
the low success rate of offspring by producing vacuum-dried sperm (VD sperm), using mouse spermatozoa dried in a vacuum without being frozen. Transfer of embryos fertilized with VD sperm to
recipients resulted in the production of several successful offspring. However, the success rate was slightly lower than that of FD sperm. The volume, temperature, and viscosity of the
medium were optimized to improve the birth rate. The results obtained from a comet assay indicated that decreasing the drying rate reduced the extent of DNA damage in VD sperm. Furthermore,
even though the rate of blastocyst formation increased upon fertilization with VD sperm, full-term development was not improved. Analysis of chromosomal damage at the two-cell stage through
an abnormal chromosome segregation (ACS) assay revealed that reduction in the drying rate failed to prevent chromosomal damage. These results indicate that the lower birth rate of offspring
from FD sperm may result from the drying process rather than the freezing process.
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Affiliation(s)
- Natsuki USHIGOME
- Faculty of Life and Environmental Science, University of Yamanashi, Kofu 400-8510, Japan
| | - Sayaka WAKAYAMA
- Advanced Biotechnology Center, University of Yamanashi, Kofu 400-8510, Japan
| | - Kango YAMAJI
- Faculty of Life and Environmental Science, University of Yamanashi, Kofu 400-8510, Japan
| | - Daiyu ITO
- Faculty of Life and Environmental Science, University of Yamanashi, Kofu 400-8510, Japan
| | - Masatoshi OOGA
- Faculty of Life and Environmental Science, University of Yamanashi, Kofu 400-8510, Japan
| | - Teruhiko WAKAYAMA
- Faculty of Life and Environmental Science, University of Yamanashi, Kofu 400-8510, Japan
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López A, Betancourt M, Ducolomb Y, Rodríguez JJ, Casas E, Bonilla E, Bahena I, Retana-Márquez S, Juárez-Rojas L, Casillas F. DNA damage in cumulus cells generated after the vitrification of in vitro matured porcine oocytes and its impact on fertilization and embryo development. Porcine Health Manag 2021; 7:56. [PMID: 34663451 PMCID: PMC8522150 DOI: 10.1186/s40813-021-00235-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 10/08/2021] [Indexed: 12/31/2022] Open
Abstract
Background The evaluation of the DNA damage generated in cumulus cells after mature cumulus-oocyte complexes vitrification can be considered as an indicator of oocyte quality since these cells play important roles in oocyte developmental competence. Therefore, the aim of this study was to determine if matured cumulus-oocyte complexes exposure to cryoprotectants (CPAs) or vitrification affects oocytes and cumulus cells viability, but also if DNA damage is generated in cumulus cells, affecting fertilization and embryo development. Results The DNA damage in cumulus cells was measured using the alkaline comet assay and expressed as Comet Tail Length (CTL) and Olive Tail Moment (OTM). Results demonstrate that oocyte exposure to CPAs or vitrification reduced oocyte (75.5 ± 3.69%, Toxicity; 66.7 ± 4.57%, Vitrification) and cumulus cells viability (32.7 ± 5.85%, Toxicity; 7.7 ± 2.21%, Vitrification) compared to control (95.5 ± 4.04%, oocytes; 89 ± 4.24%, cumulus cells). Also, significantly higher DNA damage expressed as OTM was generated in the cumulus cells after exposure to CPAs and vitrification (39 ± 17.41, 33.6 ± 16.69, respectively) compared to control (7.4 ± 4.22). In addition, fertilization and embryo development rates also decreased after exposure to CPAs (35.3 ± 16.65%, 22.6 ± 3.05%, respectively) and vitrification (32.3 ± 9.29%, 20 ± 1%, respectively). It was also found that fertilization and embryo development rates in granulose-intact oocytes were significantly higher compared to denuded oocytes in the control groups. However, a decline in embryo development to the blastocyst stage was observed after CPAs exposure (1.66 ± 0.57%) or vitrification (2 ± 1%) compared to control (22.3 ± 2.51%). This could be attributed to the reduction in both cell types viability, and the generation of DNA damage in the cumulus cells. Conclusion This study demonstrates that oocyte exposure to CPAs or vitrification reduced viability in oocytes and cumulus cells, and generated DNA damage in the cumulus cells, affecting fertilization and embryo development rates. These findings will allow to understand some of the mechanisms of oocyte damage after vitrification that compromise their developmental capacity, as well as the search for new vitrification strategies to increase fertilization and embryo development rates by preserving the integrity of the cumulus cells.
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Affiliation(s)
- Alma López
- Biological and Health Sciences Program, Metropolitan Autonomous University, Mexico City, Mexico.,Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Miguel Betancourt
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Yvonne Ducolomb
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Juan José Rodríguez
- Genetic and Environmental Toxicology Research Unit, FES-Zaragoza-UMIEZ Campus II, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Eduardo Casas
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Edmundo Bonilla
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Iván Bahena
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Socorro Retana-Márquez
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico
| | - Lizbeth Juárez-Rojas
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico
| | - Fahiel Casillas
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico.
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Ma Y, Gao L, Tian Y, Chen P, Yang J, Zhang L. Advanced biomaterials in cell preservation: Hypothermic preservation and cryopreservation. Acta Biomater 2021; 131:97-116. [PMID: 34242810 DOI: 10.1016/j.actbio.2021.07.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 02/07/2023]
Abstract
Cell-based medicine has made great advances in clinical diagnosis and therapy for various refractory diseases, inducing a growing demand for cell preservation as support technology. However, the bottleneck problems in cell preservation include low efficiency and poor biocompatibility of traditional protectants. In this review, cell preservation technologies are categorized according to storage conditions: hypothermic preservation at 1 °C~35 °C to maintain short-term cell viability that is useful in cell diagnosis and transport, while cryopreservation at -196 °C~-80 °C to maintain long-term cell viability that provides opportunities for therapeutic cell product storage. Firstly, the background and developmental history of the protectants used in the two preservation technologies are briefly introduced. Secondly, the progress in different cellular protection mechanisms for advanced biomaterials are discussed in two preservation technologies. In hypothermic preservation, the hypothermia-induced and extracellular matrix-loss injuries to cells are comprehensively summarized, as well as the recent biomaterials dependent on regulation of cellular ATP level, stabilization of cellular membrane, balance of antioxidant defense system, and supply of mimetic ECM to prolong cell longevity are provided. In cryopreservation, cellular injuries and advanced biomaterials that can protect cells from osmotic or ice injury, and alleviate oxidative stress to allow cell survival are concluded. Last, an insight into the perspectives and challenges of this technology is provided. We envision advanced biocompatible materials for highly efficient cell preservation as critical in future developments and trends to support cell-based medicine. STATEMENT OF SIGNIFICANCE: Cell preservation technologies present a critical role in cell-based applications, and more efficient biocompatible protectants are highly required. This review categorizes cell preservation technologies into hypothermic preservation and cryopreservation according to their storage conditions, and comprehensively reviews the recently advanced biomaterials related. The background, development, and cellular protective mechanisms of these two preservation technologies are respectively introduced and summarized. Moreover, the differences, connections, individual demands of these two technologies are also provided and discussed.
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Affiliation(s)
- Yiming Ma
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Lei Gao
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Yunqing Tian
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Pengguang Chen
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Jing Yang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China.
| | - Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China.
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Cantatore C, George JS, Depalo R, D'Amato G, Moravek M, Smith GD. Mouse oocyte vitrification with and without dimethyl sulfoxide: influence on cryo-survival, development, and maternal imprinted gene expression. J Assist Reprod Genet 2021; 38:2129-2138. [PMID: 34021463 DOI: 10.1007/s10815-021-02221-1] [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: 12/14/2020] [Accepted: 05/04/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE Oocytes and embryos can be vitrified with and without dimethyl sulfoxide (DMSO). Objectives were to compare no vitrification (No-Vitr), vitrification with DMSO (Vitr + DMSO), and vitrification without DMSO (Vitr - DMSO) on fresh/warmed oocyte survival, induced parthenogenetic activation, parthenogenetic embryo development, and embryonic maternal imprinted gene expression. METHODS In this prospective controlled laboratory study, mature B6C3F1 female mouse metaphase II oocytes were treated as: i) No-Vitr, ii) Vitr + DMSO/warmed, and iii) Vitr - DMSO/warmed with subsequent parthenogenetic activation and culture to the blastocyst stage. Oocyte cryo-survival, parthenogenetic activation and embryo development, parthenogenetic embryo maternal imprinted gene expression were outcome measures. RESULTS Oocyte cryo-survival was significantly improved in Vitr + DMSO versus Vitr - DMSO at initial warming and 2 h after warming. Induced parthenogenetic activation was similar between all three intervention groups. While early preimplantation parthenogenetic embryo development was similar between control, Vitr + DMSO, Vitr - DMSO oocytes, the development to blastocysts was significantly inferior in the Vitr - DMSO oocytes group compared to the control and Vitr + DMSO oocyte groups. Finally, maternal imprinted gene expression was similar between intervention groups at both the 2-cell and blastocyst parthenogenetic embryo stage. CONCLUSION(S) Inclusion of DMSO in oocyte vitrification solutions improved cryo-survival and developmental potential of parthenogenetic embryos to the blastocyst stage without significantly altering maternal imprinted gene expression.
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Affiliation(s)
- Clementina Cantatore
- Department of Maternal and Child Health, Reproductive and IVF Unit, Asl Bari, Conversano (BA), Italy
| | - Jenny S George
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA
| | - Raffaella Depalo
- Institutional BioBank, Experimental Oncology and Biobank Management Unit, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy
| | - Giuseppe D'Amato
- Department of Maternal and Child Health, Reproductive and IVF Unit, Asl Bari, Conversano (BA), Italy
| | - Molly Moravek
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA
| | - Gary D Smith
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA. .,Departments of Physiology and Urology and Reproductive Sciences Program, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109, USA.
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Qiu J, Matsukawa K, Koshimoto C, Edashige K. Equilibrium vitrification of mouse embryos at various developmental stages using low concentrations of cryoprotectants. J Reprod Dev 2021; 67:109-114. [PMID: 33563870 PMCID: PMC8075728 DOI: 10.1262/jrd.2020-152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We previously developed a new vitrification method (equilibrium vitrification) by which two-cell mouse embryos can be vitrified in liquid nitrogen in a highly dehydrated/concentrated state using low concentrations of cryoprotectants. In the present study, we examined whether this method is effective for mouse embryos at multiple developmental stages. Four-cell embryos, eight-cell embryos, morulae, and blastocysts were vitrified with EDFS10/10a, 10% (v/v) ethylene glycol and 10% (v/v) DMSO in FSa solution. The FSa solution was PB1 medium containing 30% (w/v) Ficoll PM-70 plus 0.5 M sucrose. The state of dehydration/concentration was assessed by examining the survival of vitrified embryos after storage at -80°C. When four-cell embryos and eight-cell embryos were vitrified with EDFS10/10a in liquid nitrogen and then stored at -80°C, the survival rate was high, even after 28 days, with relatively high developmental ability. On the other hand, the survival of morulae and blastocysts vitrified in liquid nitrogen and stored at -80°C for four days was low. Therefore, morulae and blastocysts cannot be vitrified in a highly dehydrated/concentrated state using the same method as with two-cell embryos. However, when blastocysts were shrunken artificially before vitrification, survival was high after storage at -80°C for four days with high developmental ability. In conclusion, the equilibrium vitrification method using low concentrations of cryoprotectants, which is effective for two-cell mouse embryos, is also useful for embryos at multiple stages. This method enables the convenient transportation of vitrified embryos using dry ice.
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Affiliation(s)
- Juan Qiu
- Laboratory of Animal Science, College of Agriculture, Kochi University, Kochi 783-8502, Japan
| | - Kazutsugu Matsukawa
- Laboratory of Animal Science, College of Agriculture, Kochi University, Kochi 783-8502, Japan
| | - Chihiro Koshimoto
- Frontier Science Research Center, Miyazaki University, Miyazaki 889-1692, Japan
| | - Keisuke Edashige
- Laboratory of Animal Science, College of Agriculture, Kochi University, Kochi 783-8502, Japan
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Tscherner AK, Macaulay AD, Ortman CS, Baltz JM. Initiation of cell volume regulation and unique cell volume regulatory mechanisms in mammalian oocytes and embryos. J Cell Physiol 2021; 236:7117-7133. [PMID: 33634482 DOI: 10.1002/jcp.30352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/09/2021] [Accepted: 02/17/2021] [Indexed: 11/07/2022]
Abstract
The period beginning with the signal for ovulation, when a fully-grown oocyte progresses through meiosis to become a mature egg that is fertilized and develops as a preimplantation embryo, is crucial for healthy development. The early preimplantation embryo is unusually sensitive to cell volume perturbations, with even moderate decreases in volume or dysregulation of volume-regulatory mechanisms resulting in developmental arrest. To prevent this, early embryos possess mechanisms of cell volume control that are apparently unique to them. These rely on the accumulation of glycine and betaine (N, N, N-trimethylglycine) as organic osmolytes-compounds that can provide intracellular osmotic support without the deleterious effects of inorganic ions. Preimplantation embryos also have the same mechanisms as somatic cells that mediate rapid responses to deviations in cell volume, which rely on inorganic ion transport. Both the unique, embryo-specific mechanisms that use glycine and betaine and the inorganic ion-dependent mechanisms undergo major changes during meiotic maturation and preimplantation development. The most profound changes occur immediately after ovulation is triggered. Before this, oocytes cannot regulate their volume, since they are strongly attached to their rigid extracellular matrix shell, the zona pellucida. After ovulation is triggered, the oocyte detaches from the zona pellucida and first becomes capable of independent volume regulation. A complex set of developmental changes in each cell volume-regulatory mechanism continues through egg maturation and preimplantation development. The unique cell volume-regulatory mechanisms in eggs and preimplantation embryos and the developmental changes they undergo appear critical for normal healthy embryo development.
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Affiliation(s)
- Allison K Tscherner
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Angus D Macaulay
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Ontario, Canada
| | - Chyna S Ortman
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Jay M Baltz
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Nakagawa Y, Onogi S, Zhang SQ, Nishihara S, Ito M, Ando S, Tanaka K, Tsuchiyama S, Yamasaki H, Shinohara K, Okuno T, Kobayashi T, Kato K. Analysis of clinical factors and reasons that influence the disposition of cryopreserved embryos in Japanese patients with infertility treated in our clinic. J Obstet Gynaecol Res 2021; 47:1425-1432. [PMID: 33590602 DOI: 10.1111/jog.14655] [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: 05/30/2020] [Revised: 12/07/2020] [Accepted: 12/26/2020] [Indexed: 11/30/2022]
Abstract
AIM To investigate the clinical factors and factors that affect the decisions regarding storage of cryopreserved embryos obtained using assisted reproductive technology. METHODS Clinical characteristics affecting the decisions regarding cryopreserved embryos were analyzed in 5724 Japanese couples who underwent in vitro fertilization (IVF) or intra-cytoplasmic sperm insemination (ICSI) and embryo transfer over 4 years since April 2015 at our clinic. Statistical analysis was carried out using JMP software. RESULTS The number of oocytes retrievals and embryos stored, outcomes and number of children, and age of the female patients and male partners were related to the decision-making regarding cryopreserved embryos. Childbearing and no wish for another child were the major reasons for discontinuing embryo storage. The number of oocytes retrievals and embryos in storage, age of the female patients, and sex of the child were independently associated with this decision-making in 2682 patients with a single child. Women with male children were more likely to choose discontinuation of embryo storage than those with female children. CONCLUSION Already having a child and not wishing for further treatment due to age along with the presence of a male child affect the decision to continue or discontinue embryo storage in Japanese patients with infertility.
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Affiliation(s)
- Yuko Nakagawa
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | - Sachie Onogi
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | - Shi-Qing Zhang
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | | | - Masanori Ito
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | - Satoko Ando
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | - Kei Tanaka
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | | | | | | | - Takashi Okuno
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
| | | | - Keiichi Kato
- Division of Gynecology, Kato Ladies Clinic, Tokyo, Japan
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Abstract
Numerous factors affect vitrification success and post-thaw development of oocytes after in vitro fertilization. Therefore, elaboration of an optimal methodology ensuring higher cryotolerance of oocytes and subsequent blastocyst yield is still of great interest. This paper describes and evaluates critical factors affecting the success of oocyte vitrification. In particular, an appropriate oocyte stage such as maturation status (germinal vesicle stage, metaphase II stage), presence/absence of cumulus cells before vitrification, and the effect of follicle size, as well as different culture systems and media for in vitro production of embryos, the types and concentrations of cryoprotectants, and cooling and warming rates at vitrification are considered. Special attention is paid to various cryocarriers used for low-volume vitrification, which ensures safe storage of oocytes/embryos in liquid nitrogen and their successful post-thaw recovery. At the end, we focussed on how age of oocyte donors (heifers, cows) influences post-thaw development. This review summarizes results of recently published studies describing different methodologies of cryopreservation and post-thaw oocyte development with the main focus on vitrification of bovine oocytes.
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Sun WS, Jang H, Kwon HJ, Kim KY, Ahn SB, Hwang S, Lee SG, Lee JH, Hwang IS, Lee JW. The protective effect of Leucosporidium-derived ice-binding protein (LeIBP) on bovine oocytes and embryos during vitrification. Theriogenology 2020; 151:137-143. [PMID: 32361180 DOI: 10.1016/j.theriogenology.2020.04.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 04/08/2020] [Accepted: 04/11/2020] [Indexed: 12/30/2022]
Abstract
Ice-binding proteins (IBPs) facilitate organism survival under extreme conditions by inhibiting thermal hysteresis and ice recrystallization. IBPs have been widely used as cryoprotectants to cryopreserve mammalian gametes and embryos. In the present study, we evaluated the protective effects of an Arctic yeast, Leucosporidium sp. AY30 derived ice-binding protein (LeIBP), on the vitrification of bovine metaphase II (MII) oocytes and embryos. When oocytes and embryos were frozen using the two-step vitrification method, the survival rate was significantly increased in the presence of LeIBP. The LeIBP supplementation decreased the levels of intracellular reactive oxygen species (ROS) and enhanced mitochondrial functions in the vitrified-warmed oocytes. Furthermore, LeIBP improved the developmental potential and suppressed apoptosis of the embryos derived from vitrified-warmed oocytes. Collectively, these data indicate that LeIBP can be used as a promising cryoprotectant to prevent cryoinjury during vitrification in bovine oocytes.
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Affiliation(s)
- Wu-Sheng Sun
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Hoon Jang
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Hyo Jin Kwon
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Ki Young Kim
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Soo Bin Ahn
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Seongsoo Hwang
- Animal Biotechnology Division, National Institute of Animal Science, Wanju, 55365, South Korea
| | - Sung Gu Lee
- Department of Polar Bioconvergence Research, Division of life Science, Korea Polar Research Institute, Incheon, 21990, South Korea
| | - Jun Hyuck Lee
- Department of Polar Bioconvergence Research, Division of life Science, Korea Polar Research Institute, Incheon, 21990, South Korea
| | - In-Sul Hwang
- Animal Biotechnology Division, National Institute of Animal Science, Wanju, 55365, South Korea.
| | - Jeong-Woong Lee
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea.
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Canesin HS, Ortiz I, Rocha Filho AN, Salgado RM, Brom-de-Luna JG, Hinrichs K. Effect of warming method on embryo quality in a simplified equine embryo vitrification system. Theriogenology 2020; 151:151-158. [PMID: 32361181 DOI: 10.1016/j.theriogenology.2020.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/03/2020] [Accepted: 03/08/2020] [Indexed: 01/19/2023]
Abstract
Equine embryo vitrification is still not a well-established technique in equine practice. Notably, little work has been done on the effect of the warming system on viability of vitrified embryos. Our goal was to evaluate the effect of warming without cryoprotectants on in vitro - produced (IVP) embryo viability in culture, quality assessment parameters, and pregnancy after transfer. Equine IVP blastocysts were vitrified using commercial embryo vitrification media and a semi-closed vitrification device. In Exp. 1, we evaluated two warming temperatures (room temperature, RT, ∼22 °C; and 38 °C) for each of three warming systems: commercial warming solution (Kit); commercial embryo holding medium (EHM) with decreasing concentrations of sucrose (EHM + SS); or EHM alone without added sucrose. Embryos (n = 9 to 14 per treatment) were cultured in vitro for 24 h, stained with DAPI, TUNEL, and fluorophore-labelled phalloidin, and evaluated for nucleus number, mitotic rate, apoptotic rate, and actin filament distribution. In Exp. 2, to survey embryo viability in vivo, vitrified IVP blastocysts were shipped to an embryo transfer facility, then warmed immediately before transfer to recipient mares, using the warming treatments associated with the nominally best (Kit-RT, Kit-38, EHM-RT) and poorest (EHM + SS-38) assessed embryo quality in Exp. 1 (n = 7 to 8 per treatment). Subsequently, IVP blastocysts produced as part of our clinical program were vitrified and shipped, then warmed in embryo holding medium at an embryo transfer facility before transfer to recipient mares; fresh IVP embryos were shipped and transferred as controls. In Exp. 1, embryos increased significantly in diameter after culture (P < 0.01), with no difference among treatments. There was no difference (P > 0.05) in the number of viable nuclei, apoptotic rate, or microfilament distribution among treatments, or between vitrified-warmed and Control embryos. The mitotic rate was higher (P = 0.021) for Kit-RT (3.6%) when compared with the other treatment groups (1.5-2.0%). In Exp. 2, there was no difference (P > 0.05) in initial pregnancy (71.4-87.5%) or heartbeat (57.1%-85.7%) rates among warming treatments. In the clinical trial, there was no difference (P > 0.05) between vitrified-warmed and Control embryos in initial pregnancy (90.9% and 66.6%, respectively) or heartbeat (81.8% and 66.6%, respectively) rates. These results indicate that a semi-closed vitrification system using commercially-available media, and incorporating warming in the field in a single step using commercial embryo holding medium without cryoprotectants, can provide high pregnancy rates with IVP equine embryos.
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Affiliation(s)
- Heloísa Siqueira Canesin
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, 77843-4466, United States
| | - Isabel Ortiz
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, 77843-4466, United States
| | | | - Renato Mayrink Salgado
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, 77843-4466, United States
| | - Joao Gatto Brom-de-Luna
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, 77843-4466, United States
| | - Katrin Hinrichs
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, 77843-4466, United States; Department of Large Animal Clinical Sciences, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX, 77843-4466, United States.
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Messineo E, Pollins A, Thayer W. Optimization and evaluation of an in vitro model of PEG-mediated fusion of nerve cell bodies. J Clin Neurosci 2019; 63:189-195. [DOI: 10.1016/j.jocn.2019.01.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/20/2019] [Accepted: 01/28/2019] [Indexed: 01/27/2023]
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Quan G, Wu G, Hong Q. Oocyte Cryopreservation Based in Sheep: The Current Status and Future Perspective. Biopreserv Biobank 2017; 15:535-547. [DOI: 10.1089/bio.2017.0074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Guobo Quan
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Guoquan Wu
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
| | - Qionghua Hong
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
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Demirel MA, Acar DB, Ekim B, Çelikkan FT, Alkan KK, Salar S, Erdemli EA, Özkavukçu S, Yar SS, Kanca H, Baştan A. The evaluation of xenotransplantation of feline ovarian tissue vitrified by needle immersed vitrification technique into male immunodeficient mice. Cell Tissue Bank 2017; 19:133-147. [DOI: 10.1007/s10561-017-9663-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/05/2017] [Indexed: 10/18/2022]
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Parnpai R, Liang Y, Ketudat-Cairns M, Somfai T, Nagai T. Vitrification of buffalo oocytes and embryos. Theriogenology 2016; 86:214-20. [DOI: 10.1016/j.theriogenology.2016.04.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/04/2016] [Accepted: 03/14/2016] [Indexed: 11/25/2022]
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Abstract
Dimethyl sulfoxide (DMSO) has been broadly used in biology as a cosolvent, a cryoprotectant, and an enhancer of membrane permeability, leading to the general assumption that DMSO-induced structural changes in cell membranes and their hydration water play important functional roles. Although the effects of DMSO on the membrane structure and the headgroup dehydration have been extensively studied, the mechanism by which DMSO invokes its effect on lipid membranes and the direct role of water in this process are unresolved. By directly probing the translational water diffusivity near unconfined lipid vesicle surfaces, the lipid headgroup mobility, and the repeat distances in multilamellar vesicles, we found that DMSO exclusively weakens the surface water network near the lipid membrane at a bulk DMSO mole fraction (XDMSO) of <0.1, regardless of the lipid composition and the lipid phase. Specifically, DMSO was found to effectively destabilize the hydration water structure at the lipid membrane surface at XDMSO <0.1, lower the energetic barrier to dehydrate this surface water, whose displacement otherwise requires a higher activation energy, consequently yielding compressed interbilayer distances in multilamellar vesicles at equilibrium with unaltered bilayer thicknesses. At XDMSO >0.1, DMSO enters the lipid interface and restricts the lipid headgroup motion. We postulate that DMSO acts as an efficient cryoprotectant even at low concentrations by exclusively disrupting the water network near the lipid membrane surface, weakening the cohesion between water and adhesion of water to the lipid headgroups, and so mitigating the stress induced by the volume change of water during freeze-thaw.
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Affiliation(s)
- Chi-Yuan Cheng
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California
| | - Jinsuk Song
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California
| | - Jolien Pas
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Lenny H H Meijer
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California.
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Cryopreservation of Day 8 equine embryos after blastocyst micromanipulation and vitrification. Theriogenology 2015; 85:894-903. [PMID: 26639642 DOI: 10.1016/j.theriogenology.2015.10.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/28/2015] [Accepted: 10/28/2015] [Indexed: 11/24/2022]
Abstract
Pregnancy rates after cryopreservation of large equine blastocyst stage embryos have remained lower than other domesticated livestock species. It is generally accepted that the embryonic capsule is the primary barrier to cryoprotectant entry into the embryo proper and techniques need to be developed to circumvent this obstacle. Therefore, the objective of this study was to develop an efficient Day 8 equine embryo cryopreservation protocol through blastocyst micromanipulation and vitrification. Grade 1 and 2 embryos recovered from mares (n = 15) 8 days after ovulation were used in these experiments. In experiment 1, the effect of either one- or two-puncture treatments before aspiration of blastocoel fluid and exposure to vitrification solutions was evaluated. No difference was detected in mean embryo volume across treatment groups after exposure to vitrification solutions or after 1, 24, 48, and 72 hours of culture. Percent of embryos re-expanding at 24 hours and percent of embryos showing diameter increase at 48 and 72 hours during in vitro culture were 100%, 83%, and 75% compared with 93%, 67%, and 50% for one- and two-puncture treatment groups, respectively. Capsule loss was 25% for one-puncture and 50% for two-puncture treatment groups. In experiment 2, no difference was detected in mean embryo volume for indirect introduction (aspiration of blastocoel fluid + equilibration) and direct introduction (injection of cryoprotectant into blastocoel cavity) treatment groups, after exposure to dilution solution or to culture medium. There was no difference in mean embryo volume for the indirect and direct introduction treatment groups after 1, 24, 48, and 72 hours of culture. Percent of embryos re-expanding at 24 hours and percent of embryos showing diameter increases at 48 and 72 hours during in vitro culture were 100%, 76.9%, and 69.2%, respectively, for both treatment groups. Those embryos subjected to the direct introduction treatment had a higher (P = 0.05) percent capsule loss (70%) compared with the indirect introduction treatment group (31%). The pregnancy rate after transfer of vitrified expanded Grade 1 blastocysts using the indirect introduction method was 83% (5/6). Three pregnancies were allowed to continue to term and resulted in the birth of three healthy foals. The vitrification protocol used in this study has the potential to become a key tool for the successful cryopreservation of equine expanded blastocysts.
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Fan Z, Meng Q, Bunch TD, White KL, Wang Z. Effective cryopreservation of golden Syrian hamster embryos by open pulled straw vitrification. Lab Anim 2015; 50:45-53. [PMID: 25715282 DOI: 10.1177/0023677215571654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Golden Syrian hamster embryos are difficult to cryopreserve due to their high sensitivity to cryoprotectants and in vitro handling. The objective of this study is to develop a robust open pulled straw (OPS) vitrification technique for cryopreserving hamster embryos at various developmental stages. We first systematically tested the concentrations of cryoprotectants and the exposure times of two-cell embryos to various vitrification solutions. We identified pretreatment of two-cell embryos with 10% (v/v) ethylene glycol (EG) + 10% (v/v) dimethylsulfoxide (DMSO) for 30 s followed by exposure in the vitrification solution, EDFS30 (containing 15% EG + 15% DMSO), for 30 s before plunging into liquid nitrogen (two-step exposure method) as the optimal OPS vitrification protocol. We then investigated the resourcefulness of this protocol for vitrifying hamster embryos at different developmental stages. The results showed that high blastocyst rates from embryos vitrified at two-cell, four-cell, eight-cell, or morula stage (62%, 78%, 80%, or 72%, respectively), but not those verified at pronuclear (0%) or blastocyst stage (24%; P < 0.05), were achieved by this protocol. When embryos vitrified at the two-cell stage were recovered and then directly transferred to recipient females, 29% of them developed to term, a development rate not significantly different (P > 0.05) from the 40% birth rate of the unvitrified controls. In conclusion, we have developed an effective two-step OPS vitrification protocol for hamster embryos.
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Affiliation(s)
- Z Fan
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, USA
| | - Q Meng
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, USA
| | - T D Bunch
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, USA
| | - K L White
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, USA
| | - Z Wang
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, USA Auratus Bio, LLC, Canton, South Dakota, USA
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Cryopreservation of mammalian oocytes and embryos: current problems and future perspectives. SCIENCE CHINA-LIFE SCIENCES 2014; 57:903-14. [DOI: 10.1007/s11427-014-4689-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 02/03/2014] [Indexed: 01/19/2023]
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Habibi A, Farrokhi N, Moreira da Silva JF, Hosseini A. Transcript analysis of heat shock protein 72 in vitrified 2-cell mouse embryos and subsequent in vitro development. CELL JOURNAL 2014; 15:340-7. [PMID: 24381859 PMCID: PMC3866538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 02/19/2013] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of the study was to compare the effects of two different concentrations of cryoprotectants by cryotopvitrification on survival, developmental capacity and Heat shock protein 72 (Hsp72) expression of two-cell mouse embryos. MATERIALS AND METHODS In this experimental study, transcript analysis of Hsp72 gene was performed on non-vitrified and vitrified 2-cell mouse embryos via a nested quantitative polymerase chain reaction (nqPCR) subsequent to normalization with Hprt1 as the reference gene. The different cryoprotectant combinations were 15% (vit1:7.5% of each ethylene glycol (EG) and dimethyl sulfoxide (DMSO), 30% (vit2:15% EG + 15% DMSO) and control group with no cryoprotectants. Vitrified and fresh 2-cell embryos were cultured to obtain cleavage and blastocyst formation rates. The results were analyzed via one-way analysis of variance and the mean values were compared with least significant difference (LSD) (p< 0.05). RESULTS The relative expression of Hsp72 in vit2 (30% v/v) was significantly higher than vit1 (15% v/v). Survival rates were the same for both vitrification treatments and significantly lower than the control group. Cleavage and blastocyst rates in vit1 were significantly higher than vit2 while those in two vitrified groups were significantly lower than the control group. CONCLUSION Our developmental data demonstrated that vit1 treatment (7.5% EG and 7.5% DMSO) was more efficient than vit2 (15% EG and 15% DMSO) in mouse embryos. The cryotopvitrification with two concentrations of cryoprotectants caused the relative changes of Hsp72 transcript level, but the stability of the gene in vit1 was significantly higher than vit2 and closer to the fresh 2-cell embryos.
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Affiliation(s)
- Afrooz Habibi
- Department of Anatomical Sciences, International Branch, Shiraz University of Medical Sciences, Kish Island, Iran
| | - Naser Farrokhi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Shahrood, Iran
| | | | - Ahmad Hosseini
- Cellular and Molecular Biology Researcher Center, Shahid Beheshti University of Medical Sciences and
Health Services, Tehran, Iran,
* Corresponding Address:
P.O.Box: 19395-4719Cellular and Molecular Biology Researcher CenterShahid Beheshti University
of Medical SciencesTehranIran
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Vitrification of oocytes, embryos and blastocysts. Best Pract Res Clin Obstet Gynaecol 2012; 26:789-803. [PMID: 22940094 DOI: 10.1016/j.bpobgyn.2012.07.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 05/08/2012] [Accepted: 07/30/2012] [Indexed: 11/24/2022]
Abstract
In assisted reproductive technology, cryopreservation of human oocytes and embryos has been significantly improved by refined slow-cooling and the new vitrification method. The slow-cooling method requires a programmed cryo-machine, and usually takes several hours. It is, however, difficult to eliminate injuries resulting from ice formation completely. Vitrification has become a reliable strategy because it is simple, can lead to high survival rates and viability, and has better clinical outcome. Vitrification transforms cells into an amorphous glassy state inside and outside the vitrified cell with ultra-rapid cooling and warming steps by plunging the oocytes and embryos into liquid nitrogen, instead of ice-crystal formation. Over the past decade, several advances in vitrification technologies have improved clinical efficiency and outcome. In this chapter, we focus on vitrification technologies for cryopreservation in human assisted reproductive technology.
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Dabkowska AP, Foglia F, Lawrence MJ, Lorenz CD, McLain SE. On the solvation structure of dimethylsulfoxide/water around the phosphatidylcholine head group in solution. J Chem Phys 2011; 135:225105. [DOI: 10.1063/1.3658382] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Habibi A, Hosseini A, Farrokhi N, Amidi F, Carvalhais I, Chaveiro A, Moreira da Silva F. Short Communication: Successful vitrification of mouse oocytes using the cryotop method with moderate cryoprotectant concentrations. CANADIAN JOURNAL OF ANIMAL SCIENCE 2011. [DOI: 10.4141/cjas10042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Habibi, A., Hosseini, A., Farrokhi, N., Amidi, F., Carvalhais, I., Chaveiro, A. and Moreira da Silva, F. 2011. Short Communication: Successful vitrification of mouse oocytes using the cryotop method with moderate cryoprotectant concentrations. Can. J. Anim. Sci. 91: 385–388. The response of vitrified mouse MII oocytes in the presence of two concentrations of cryoprotectants [vit1 (15%: 7.5% dimethyl sulfoxide (DMSO)+7.5% ethylene glycol (EG) and vit2 (30%: 15% DMSO+15% EG)] was analyzed to investigate whether reducing cryoprotectant concentrations can affect oocyte survival after cryopreservation by the cryotop method. After thawing the survival, fertilization, cleavage and blastocyst rates were compared with unfrozen oocytes. It can be concluded that 15% cryoprotectant (7.5% DMSO+7.5% EG), instead of the commonly used 30% (15% DMSO+15% EG), could be helpful by moderating the probable toxic effects of vitrification solution in mouse oocyte during vitrification by cryotop.
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Affiliation(s)
- Afrooz Habibi
- Department of Anatomical Sciences, International branch of Medical School of Shiraz University of Medical Sciences and Health Services, Kish Island, Iran
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, Angra do Heroísmo, Portugal
| | - Ahmad Hosseini
- Department of Anatomy, Medical School of Tehran University of Medical Sciences and Health Services, Tehran, Iran
| | - Naser Farrokhi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Shahrood, Iran
| | - Fardin Amidi
- Department of Anatomy, Medical School of Tehran University of Medical Sciences and Health Services, Tehran, Iran
| | - Isabel Carvalhais
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, Angra do Heroísmo, Portugal
| | - António Chaveiro
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, Angra do Heroísmo, Portugal
| | - Fernando Moreira da Silva
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, Angra do Heroísmo, Portugal
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Bao RM, Taketsuru H, Miyano T. Histological and biological assessment of vitrified ovarian follicles from large animals. Reprod Med Biol 2011; 10:211-219. [PMID: 29662357 DOI: 10.1007/s12522-011-0094-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 06/02/2011] [Indexed: 11/25/2022] Open
Abstract
Mammalian ovaries contain mixed populations of follicles at different developmental stages. A combination of vitrification and growth culture of ovarian follicles could provide the desired number of mature eggs from a preserved small amount of ovarian tissues. Secondary and primordial follicles from porcine and bovine ovaries were vitrified in solutions containing ethylene glycol, dimethyl sulfoxide and different concentrations of sucrose, and assessed via histological examination, viability staining, xenografting to immunodeficient mice, and in vitro culturing. Histological examination revealed the damage to oocytes and the damage to follicle components separately. The effects of sucrose in vitrification solutions on the follicles were different depending on the developmental stage of the follicle, oocyte size, cell type in the follicle, and species. Viability staining with fluorescein diacetate was useful to assess the damage to oocytes in secondary follicles. In the xenografts, vitrified bovine primordial and secondary follicles developed to the antral stage, and vitrified porcine primordial follicles developed to the secondary stage. Furthermore, bovine secondary follicles formed antrum-like structures in culture. These results suggest that histological examination and viability staining are valuable for assessing the direct effects of vitrification and warming conditions on follicles and oocytes, while xenografting and in vitro culturing can be useful for evaluating the developmental ability of vitrified follicles and oocytes.
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Affiliation(s)
- Rong-Mei Bao
- Graduate School of Agricultural Science Kobe University Nada-ku 657-8501 Kobe Japan
| | - Hiroaki Taketsuru
- Graduate School of Agricultural Science Kobe University Nada-ku 657-8501 Kobe Japan
| | - Takashi Miyano
- Graduate School of Agricultural Science Kobe University Nada-ku 657-8501 Kobe Japan
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31
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Chen X, Allen HC. Interactions of dimethylsulfoxide with a dipalmitoylphosphatidylcholine monolayer studied by vibrational sum frequency generation. J Phys Chem A 2010; 113:12655-62. [PMID: 19751059 DOI: 10.1021/jp905066w] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The interactions between phospholipid monolayers and dimethylsulfoxide (DMSO) molecules were investigated by vibrational sum frequency generation (VSFG) spectroscopy in a Langmuir trough system. Both the head and the tail groups of dipalmitoylphosphatidylcholine (DPPC) as well as DMSO were probed to provide a comprehensive understanding of the interactions between DPPC and DMSO molecules. A condensing effect is observed for the DPPC monolayer on a concentrated DMSO subphase (>20 mol %). This effect results in a well-ordered conformation for the DPPC alkyl chains at very large mean molecular areas. Interactions between DMSO and DPPC headgroups were also studied. DMSO-induced dehydration of the DPPC phosphate group is revealed at DMSO concentration above 10 mol %. The average orientation of DMSO with DPPC versus dipalmitoylphosphate sodium salt (DPPA) monolayers was compared. The comparison revealed that DMSO molecules are perturbed and reorient because of the interfacial electric field created by the charged lipid headgroups. The orientation of the DPPC alkyl chains remains nearly unchanged in the liquid condensed phase with the addition of DMSO. This suggests that DMSO molecules are expelled from the condensed monolayer. In addition, implications for the DMSO-induced permeability enhancement of biological membranes from this work are discussed.
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Affiliation(s)
- Xiangke Chen
- The Ohio State University, Department of Chemistry, 100 West 18th Avenue, Columbus, Ohio 43210, USA
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32
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Sher G, Keskintepe L, Keskintepe M, Maassarani G, Tortoriello D, Brody S. Genetic analysis of human embryos by metaphase comparative genomic hybridization (mCGH) improves efficiency of IVF by increasing embryo implantation rate and reducing multiple pregnancies and spontaneous miscarriages. Fertil Steril 2009; 92:1886-94. [DOI: 10.1016/j.fertnstert.2008.11.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 11/06/2008] [Accepted: 11/21/2008] [Indexed: 02/06/2023]
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Hiraoka K, Fuchiwaki M, Hiraoka K, Horiuchi T, Murakami T, Kinutani M, Kinutani K. Effect of the size of zona pellucida opening by laser assisted hatching on clinical outcome of frozen cleaved embryos that were cultured to blastocyst after thawing in women with multiple implantation failures of embryo transfer: a retrospective study. J Assist Reprod Genet 2008; 25:129-35. [PMID: 18365308 DOI: 10.1007/s10815-008-9214-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Accepted: 03/03/2008] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To evaluate the effect of the size of zona pellucida opening by laser assisted hatching for frozen cleaved embryo that were thawed after both fresh and frozen cleaved embryo transfer cycles failed and were cultured to blastocyst after thawing in patients with multiple implantation failures. MATERIALS AND METHODS Of 101 consecutive procedures (October 2003 to June 2006), 30 patients declined to perform assisted hatching and were selected as control group, 40 patients had 40 microm opening of the zona (October 2003 to January 2005), 31 patients had 50% of the zona opening (February 2005 to June 2006). RESULTS The pregnancy, implantation and delivery rates were significantly higher in 50% opening group (74%, 52% and 65%) compared to control group (17%, 10% and 13%; P < 0.01) and 40 microm opening group (43%, 27% and 38%; P < 0.04). CONCLUSIONS The size of the zona pellucida opening may affect the outcome of frozen cleaved embryo transfer.
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Affiliation(s)
- Kenichiro Hiraoka
- Kinutani Women's Clinic, 8-23-4F, Hondori, Naka-ku, Hiroshima 730-0035, Japan.
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Notman R, den Otter WK, Noro MG, Briels WJ, Anwar J. The permeability enhancing mechanism of DMSO in ceramide bilayers simulated by molecular dynamics. Biophys J 2007; 93:2056-68. [PMID: 17513383 PMCID: PMC1959535 DOI: 10.1529/biophysj.107.104703] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The lipids of the topmost layer of the skin, the stratum corneum, represent the primary barrier to molecules penetrating the skin. One approach to overcoming this barrier for the purpose of delivery of active molecules into or via the skin is to employ chemical permeability enhancers, such as dimethylsulfoxide (DMSO). How these molecules exert their effect at the molecular level is not understood. We have investigated the interaction of DMSO with gel-phase bilayers of ceramide 2, the predominant lipid in the stratum corneum, by means of molecular dynamics simulations. The simulations satisfactorily reproduce the phase behavior and the known structural parameters of ceramide 2 bilayers in water. The effect of DMSO on the gel-phase bilayers was investigated at various concentrations over the range 0.0-0.6 mol fraction DMSO. The DMSO molecules accumulate in the headgroup region and weaken the lateral forces between the ceramides. At high concentrations of DMSO (> or =0.4 mol fraction), the ceramide bilayers undergo a phase transition from the gel phase to the liquid crystalline phase. The liquid-crystalline phase of ceramides is expected to be markedly more permeable to solutes than the gel phase. The results are consistent with the experimental evidence that high concentrations of DMSO fluidize the stratum corneum lipids and enhance permeability.
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Affiliation(s)
- Rebecca Notman
- Molecular Biophysics, Division of Pharmaceutical Science, King's College London, London, United Kingdom
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35
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Hong QH, Tian SJ, Zhu SE, Feng JZ, Yan CL, Zhao XM, Liu GS, Zheng SM. Vitrification of Boer Goat Morulae and Early Blastocysts by Straw and Open-Pulled Straw Method. Reprod Domest Anim 2007; 42:34-8. [PMID: 17214771 DOI: 10.1111/j.1439-0531.2006.00720.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this study was to investigate the effects of different vitrification solutions [EFS30 or EFS40 contains 30% (v/v) ethylene glycol (EG), 40% (v/v) EG; EDFS30 or EDFS40 contains 15% (v/v) EG and 15% (v/v) dimethyl sulfoxide (DMSO), 20% (v/v) EG and 20% (v/v) DMSO], equilibrium time during vitrification (0.5-2.5 min) and vitrification protocols [one-step straw, two-step straw and open-pulled straw (OPS)] on in vivo development of vitrified Boer goat morulae and blastocysts after embryo transfer. In the one-step straw method, the lambing rates of vitrified embryos in EFS30 (37.5%), EFS40 (40.5%) or EDFS30 (38.2%) group were similar to that of fresh embryos (57.5%) and conventional freezing method (46.7%) when the equilibrium time was 2 min. In the two-step straw method, the highest lambing rate was obtained when embryos were pretreated with 10% EG for 5 min and then exposed to EFS40 for 2 min (51.4%), showing similar lambing rates compared with fresh embryos (56.1%) or the embryos cryopreserved by conventional freezing method (45.2%). In the OPS method, the lambing rate in EFS40, EDFS30 or EDFS40 groups were similar to that (57.1%) of fresh embryos, or to that (46.0%) of embryos cryopreserved by conventional freezing method. The highest lambing rate (51.4%) of the group of OPS was obtained when the embryos were vitrified with EDFS30. In conclusion, either the two-step straw method in which embryos were pretreated in 10% EG for 5 min and then exposed to EFS40 for 2 min, or the OPS method in which embryos were pretreated in 10% EG + 10% DMSO for 30 s and then exposed to EDFS30 for 25 s was a simple and efficient method for the vitrification of Boer goat morulae and blastocysts.
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Affiliation(s)
- Q-H Hong
- College of Animal Science and Technology, China Agricultural University, Beijing, China
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36
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Eimani H, Mamzoji SS, Soleimani MM, Abnosi MH, Valojerdi MR, Yazdi PE, Shahverdi A, Guorabi H. Survival rate of preantral follicles derived from vitrified neonate mouse ovarian tissue by Cryotop and conventional methods. Biofactors 2007; 31:117-26. [PMID: 18806315 DOI: 10.1002/biof.5520310202] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of this study was to investigate the growth and survival rate of preantral follicles isolated from vitrified ovarian tissue by Cryotop and conventional methods. The ovaries of 14-day-old mice were separated and divided into four groups as following: Cryotop group, vitrified by Cryotop; CV (Conventional; CV) group, vitrified by conventional straw; toxicity test group and control group. After warming the vitrified ovaries, isolated preantral follicles from four groups were cultured for 4 days to compare survival rate and follicular growth between above-mentioned groups. Survival rate (97.3%) in toxicity test group alike the control group (98.7%) were significantly higher (P<0.05) than the Cryotop (92.7%) and CV (47.7%) groups. Increase in follicle diameters after 4 days in Cryotop and CV groups was significantly lower (P<0.05) than the control and toxicity test groups, but growth and survival rate of follicles in Cryotop group was significantly higher (P<0.05) than the CV group. These results demonstrated that ovarian tissue vitrification by Cryotop highly preserves the viability rate of preantral follicles.
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Affiliation(s)
- H Eimani
- Department of Embryology, Reproductive Medicine Center, Royan Institute, Tehran, Iran.
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Chen J, Qian Y, Feng T, Cai LB, Liu JY, Zhang Y, Ding W, Mao YD. Delivery after Transfer of Frozen-thawed Embryos from In Vitro-Matured Oocytes in a Woman at Risk for Ovarian Hyperstimulation Syndrome. J Reprod Dev 2007; 53:449-53. [PMID: 17139133 DOI: 10.1262/jrd.18086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The present report describes the birth of a healthy infant after cryopreservation of embryos produced from in vitro-matured oocytes retrieved from a woman at risk of developing ovarian hyperstimulation syndrome (OHSS) during conventional in vitro fertilization (IVF) cycles. A conventional long protocol including gonadotropin-releasing hormone agonist (GnRHa) and gonadotropins induced a risk of OHSS. Oocyte retrieval was performed on day 11 of the cycle, and 27 immature oocytes were obtained. Following incubation for 24 h in maturation medium, 74.1% (20/27) of the oocytes were at the metaphase II stage. Fourteen oocytes (14/20, 70.0%) were fertilized after intracytoplasmic sperm injection (ICSI) with her husband's spermatozoa and cultured for 3 days. On day 4 following oocyte retrieval, three embryos at the 8-16 cell stage were transferred into the woman's uterus, and five spare embryos were frozen. Since the fresh embryo transfer failed to result in pregnancy, three post-thaw embryos were transferred into the woman three months later. Transfer of the frozen embryos resulted in pregnancy with delivery of a healthy infant girl.
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Affiliation(s)
- Juan Chen
- Jiangsu Province Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, PR China
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38
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Notman R, Noro M, O'Malley B, Anwar J. Molecular Basis for Dimethylsulfoxide (DMSO) Action on Lipid Membranes. J Am Chem Soc 2006; 128:13982-3. [PMID: 17061853 DOI: 10.1021/ja063363t] [Citation(s) in RCA: 273] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dimethylsulfoxide (DMSO) is an aprotic solvent that has the ability to induce cell fusion and cell differentiation and enhance the permeability of lipid membranes. It is also an effective cryoprotectant. Insights into how this molecule modulates membrane structure and function would be invaluable toward regulating the above processes and for developing chemical means for enhancing or hindering the absorption of biologically active molecules, in particular into or via the skin. We show here by means of molecular simulations that DMSO can induce water pores in dipalmitoyl-phosphatidylcholine bilayers and propose this to be a possible pathway for the enhancement of penetration of actives through lipid membranes. DMSO also causes the membrane to become floppier, which would enhance permeability, facilitate membrane fusion, and enable the cell membrane to accommodate osmotic and mechanical stresses during cryopreservation.
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Affiliation(s)
- Rebecca Notman
- Molecular Biophysics, Division of Pharmaceutical Science, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NN U.K
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Huang JY, Chen HY, Tan SL, Chian RC. Effects of Osmotic Stress and Cryoprotectant Toxicity on Mouse Oocyte Fertilization and Subsequent Embryonic Development In Vitro. ACTA ACUST UNITED AC 2006. [DOI: 10.1089/cpt.2006.4.149] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jack Y.J. Huang
- Division of Reproductive Biology and Experimental Medicine, Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
| | - Hai-Ying Chen
- Division of Reproductive Biology and Experimental Medicine, Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
| | - Seang Lin Tan
- Division of Reproductive Biology and Experimental Medicine, Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
| | - Ri-Cheng Chian
- Division of Reproductive Biology and Experimental Medicine, Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
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Guignot F, Bouttier A, Baril G, Salvetti P, Pignon P, Beckers JF, Touzé JL, Cognié J, Traldi AS, Cognié Y, Mermillod P. Improved vitrification method allowing direct transfer of goat embryos. Theriogenology 2006; 66:1004-11. [PMID: 16581117 DOI: 10.1016/j.theriogenology.2006.02.040] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2005] [Revised: 02/24/2006] [Accepted: 02/26/2006] [Indexed: 11/25/2022]
Abstract
The aim of this study was to design a vitrification method suited to field embryo transfer experiments in goat. In a first experiment, a standard vitrification protocol, previously designed for sheep embryos was compared to slow freezing of goat embryos. No significant difference was observed on kidding rate (48% versus 69%, respectively), nor on embryo survival rate (35% versus 45%). Second experiment: all embryos were vitrified. After warming, embryos were either transferred directly (direct transfer), or after in vitro dilution of the cryoprotectants (conventional transfer). The kidding rate was not affected by the transfer method (38% versus 23%, respectively). However, embryo survival rate tended to be higher after direct transfer (26% versus 14%). Third experiment: OPS vitrification was compared to standard vitrification. The kidding rate was not affected (22% versus 39%, respectively), but the embryo survival rate was lower after OPS (14% versus 28%). Fourth experiment: 0.4M sucrose was added with cryoprotectants in vitrification. The kidding rate after direct transfer was significantly enhanced after addition of sucrose (56% versus 27%, respectively), whereas embryo survival rate was not significantly affected (32% versus 18%). Fifth experiment: vitrification with sucrose supplementation was compared to slow freezing. No significant difference was observed after direct transfer on kidding rate (52% versus 31%, respectively), but embryo survival rate tended to be higher after vitrification (34% versus 21%). In conclusion, our results indicate that addition of 0.4M sucrose in association with direct transfer improves significantly the viability of goat vitrified embryos.
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Affiliation(s)
- F Guignot
- INRA-CNRS-Université de Tours-Haras Nationaux, Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France.
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Mukaida T, Oka C, Goto T, Takahashi K. Artificial shrinkage of blastocoeles using either a micro-needle or a laser pulse prior to the cooling steps of vitrification improves survival rate and pregnancy outcome of vitrified human blastocysts. Hum Reprod 2006; 21:3246-52. [PMID: 16936299 DOI: 10.1093/humrep/del285] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Since we reported the first successful birth from a blastocyst vitrified using a cryoloop technique, our results showed that the survival rate of vitrified blastocysts was negatively correlated with the expansion of the blastocoele. We speculated that a large blastocoele may disturb the efficacy of vitrification. Therefore, we evaluated the effectiveness of artificial shrinkage (AS) of blastocoeles before vitrification, on increasing the survival rate of vitrified blastocysts. METHODS Supernumerary expanded blastocysts on day 5 were vitrified after AS, which was performed by puncturing the blastocoele with a micro-needle, or by making a hole in the blastocoele with a laser pulse. After warming, viable blastocysts (confirmed by re-expansion of the blastocoele) were transferred to patients with hormone replacement cycle. We compared these data with those of our previous report where AS was not carried out. RESULTS The survival rate was significantly higher (97.2%, 488/502) in this study than that of the previous report (86%). After 266 transferable cycles, 160 patients became pregnant (60.2%), which was significantly higher than our previous results (34.1%, 29/85). The implantation rate was 46.7% (209/448). CONCLUSIONS Our results revealed that the survival rate and the pregnancy rate of vitrified expanded and hatching blastocysts can be improved by using AS to collapse the blastocele before vitrification.
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Affiliation(s)
- T Mukaida
- Hiroshima HART Clinic, Naka-ku, Hiroshima, Japan.
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42
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Chian RC, Kuwayama M, Tan L, Tan J, Kato O, Nagai T. High Survival Rate of Bovine Oocytes Matured In Vitro Following Vitrification. J Reprod Dev 2004; 50:685-96. [PMID: 15647621 DOI: 10.1262/jrd.50.685] [Citation(s) in RCA: 133] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Improving pregnancy rates associated with the use of cryopreserved human oocytes would be an important advance in human assisted reproductive technology (ART). Vitrification allows glasslike solidification of a solution without ice crystal formation in the living cells. We have attempted to improve the survival rates of oocytes by a vitrification technique using bovine models. In vitro matured oocytes with or without cumulus cells were vitrified with either 15.0% (v/v) ethylene glycol (EG) + 15% (v/v) dimethylsulfoxide (DMSO) + 0.5 M sucrose or 15% (v/v) EG + 15% (v/v) 1,2-propanediol (PROH) + 0.5 M sucrose, using 'Cryotop' or 'thin plastic sticker', respectively. The oocyte survival rates after vitrifying-warming, and the capacity for fertilization and embryonic development were examined in vitro. The rate of embryonic development to blastocyst was significantly higher (P<0.05) in the oocytes vitrified with 15% (v/v) EG + 15% (v/v) PROH + 0.5 M sucrose than in the oocytes vitrified with 15% (v/v) EG + 15% (v/v) DMSO + 0.5 M sucrose (7.4% +/- 4.1 vs. 1.7% +/- 3.0, respectively). Oocytes vitrified without cumulus cells had a higher survival rate after thawing and a superior embryonic developmental capacity compared with oocytes vitrified with cumulus cells. Prolonged pre-incubation time after thawing adversely affected the rates of embryonic cleavage and development. These results indicate that in vitro matured bovine oocytes can be vitrified successfully with the mixture of the cryoprotectants, EG + PROH, the absence of cumulus cells for vitrification does not affect oocyte survival rate after warming, and vitrified and warmed oocytes do not require pre-incubation before in vitro fertilization.
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Affiliation(s)
- Ri-Cheng Chian
- Division of Reproductive Biology, Department of Obstetrics and Gynecology, McGill University, Montreal, Canada.
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Abstract
Vitrification is a method in which not only cells but also the whole solution is solidified without the crystallization of ice. For embryo cryopreservation, the vitrification method has advantages over the slow freezing method. For example, injuries related to ice is less likely to occur, embryo survival is more likely if the embryo treatment is optimized, and embryos can be cryopreserved by a simple method in a short period without a programmed freezer. However, solutions for vitrification must include a high concentration of permeating cryoprotectants, which may cause injury through the toxicity of the agents. Since the development of the first vitrification solution, which contained dimethylsulphoxide, acetamide, and propylene glycol, numerous solutions have been composed and reported to be effective. However, ethylene glycol is now most widely used as the permeating component. As supplements, a macromolecule and/or a small saccharide are frequently added. Embryos of various species, including humans, can be cryopreserved by conventional vitrification using insemination straws or by ultrarapid vitrification using minute tools such as electron microscopic grids, thin capillaries, minute loops, or minute sticks, or as microdrops. In the ultrarapid method, solutions with a lower concentration of permeating cryoprotectants, thus having a lower toxicity, can be used, because ultrarapid cooling/warming helps to prevent ice formation.
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Affiliation(s)
- Magosaburo Kasai
- Laboratory of Animal Science, College of Agriculture, Kochi University, Nankoku, Kochi 783-8502, Japan.
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Mukaida T, Takahashi K, Kasai M. Blastocyst cryopreservation: ultrarapid vitrification using cryoloop technique. Reprod Biomed Online 2003; 6:221-5. [PMID: 12676003 DOI: 10.1016/s1472-6483(10)61713-0] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Human embryos have been cryopreserved mainly by slow freezing, but vitrification has also proven effective for embryos at early cleavage stages. However, clinical results on blastocyst cryopreservation have not been consistent. A feasible option appears to be ultrarapid vitrification, in which embryos are vitrified with a reduced amount of solution to achieve extremely high rates of cooling and warming. The cryoloop is a tiny nylon loop connected to the lid by a small metal tube; a metal insert on the lid enables the use of a stainless steel handling rod with a small magnet, and the loop can be stored in the cryovial. In the HART Clinic group, of 444 supernumerary human blastocysts that were vitrified by cryoloops 79% survived after warming, and of 126 recipients 36% became pregnant. The outline of ultrarapid vitrification using cryoloops is described.
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Affiliation(s)
- Tetsunori Mukaida
- Hiroshima HART Clinic, 5-7-10, Ohtemachi, Naka-ku, Hiroshima, 730-0051 Japan.
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