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Meyer D, Kort J, Chen CH, Zhao H, Yi X, Lai SY, Lu F, Yang WJ, Hsieh IC, Chiang CL, Chen WM, Huang JYJ, Camarillo D, Behr B. Development and evaluation of a usable blastocyst predictive model using the biomechanical properties of human oocytes. PLoS One 2024; 19:e0299602. [PMID: 38696439 PMCID: PMC11065297 DOI: 10.1371/journal.pone.0299602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 02/13/2024] [Indexed: 05/04/2024] Open
Abstract
PURPOSE The purposes of this study were to determine whether biomechanical properties of mature oocytes could predict usable blastocyst formation better than morphological information or maternal factors, and to demonstrate the safety of the aspiration measurement procedure used to determine the biomechanical properties of oocytes. METHODS A prospective split cohort study was conducted with patients from two IVF clinics who underwent in vitro fertilization. Each patient's oocytes were randomly divided into a measurement group and a control group. The aspiration depth into a micropipette was measured, and the biomechanical properties were derived. Oocyte fertilization, day 3 morphology, and blastocyst development were observed and compared between measured and unmeasured cohorts. A predictive classifier was trained to predict usable blastocyst formation and compared to the predictions of four experienced embryologists. RESULTS 68 patients and their corresponding 1252 oocytes were included in the study. In the safety analyses, there was no significant difference between the cohorts for fertilization, while the day 3 and 5 embryo development were not negatively affected. Four embryologists predicted usable blastocyst development based on oocyte morphology with an average accuracy of 44% while the predictive classifier achieved an accuracy of 71%. Retaining the variables necessary for normal fertilization, only data from successfully fertilized oocytes were used, resulting in a classifier an accuracy of 81%. CONCLUSIONS To date, there is no standard guideline or technique to aid in the selection of oocytes that have a higher likelihood of developing into usable blastocysts, which are chosen for transfer or vitrification. This study provides a comprehensive workflow of extracting biomechanical properties and building a predictive classifier using these properties to predict mature oocytes' developmental potential. The classifier has greater accuracy in predicting the formation of usable blastocysts than the predictions provided by morphological information or maternal factors. The measurement procedure did not negatively affect embryo culture outcomes. While further analysis is necessary, this study shows the potential of using biomechanical properties of oocytes to predict embryo developmental outcomes.
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Affiliation(s)
- Daniel Meyer
- Department of Bioengineering, Stanford University, Stanford, CA, United States of America
| | - Jonathan Kort
- Division of Reproductive Endocrinology and Infertility, Stanford University, Stanford, CA, United States of America
| | - Ching Hung Chen
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu, Taiwan
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu, Taiwan
| | - Huan Zhao
- Department of Reproductive Medicine, The 3rd Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Xiaoling Yi
- Department of Reproductive Medicine, The 3rd Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Shin-Yu Lai
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu, Taiwan
| | - Farn Lu
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu, Taiwan
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu, Taiwan
| | - Wen Jui Yang
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu, Taiwan
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu, Taiwan
| | - I-Chiao Hsieh
- Department of Data Science, Inti Taiwan, Inc., Zhubei City, Hsinchu, Taiwan
| | - Chung-Li Chiang
- Department of Data Science, Inti Taiwan, Inc., Zhubei City, Hsinchu, Taiwan
| | - Wei-Ming Chen
- Department of Data Science, Inti Taiwan, Inc., Zhubei City, Hsinchu, Taiwan
| | - Jack Yu Jen Huang
- Division of Reproductive Endocrinology and Infertility, Stanford University, Stanford, CA, United States of America
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu, Taiwan
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu, Taiwan
| | - David Camarillo
- Department of Bioengineering, Stanford University, Stanford, CA, United States of America
| | - Barry Behr
- Division of Reproductive Endocrinology and Infertility, Stanford University, Stanford, CA, United States of America
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2
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Cho JR, Yu EH, Lee HJ, Kim IH, Jeong JH, Lee DB, Cho SK, Joo JK. Ultra-Fast Vitrification: Minimizing the Toxicity of Cryoprotective Agents and Osmotic Stress in Mouse Oocyte Cryopreservation. Int J Mol Sci 2024; 25:1884. [PMID: 38339162 PMCID: PMC10856457 DOI: 10.3390/ijms25031884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024] Open
Abstract
Globally, women have been adopting oocyte cryopreservation (OC) for fertility preservation for various reasons, such as inevitable gonadotoxic treatment for specific pathologic states and social preferences. While conventional vitrification (C-VIT) has improved the success rate of OC, challenges of possible toxicities of high-concentration cryoprotective agents and osmotic stress persist. To overcome these challenges, we evaluated the ultra-fast vitrification (UF-VIT) method, which reduces the equilibration solution stage exposure time compared to C-VIT by observing mouse oocyte intracellular organelles and embryonic development. Consequently, compared to fresh mouse oocytes, UF-VIT presented significant differences only in endoplasmic reticulum (ER) intensity and mitochondrial (MT) distribution. Meanwhile, C-VIT showed substantial differences in the survival rate, key ER and MT parameters, and embryonic development rate. UF-VIT exhibited considerably fewer negative effects on key MT parameters and resulted in a notably higher blastocyst formation rate than C-VIT. Meiotic spindle (spindle and chromosomes) morphology showed no significant changes between the groups during vitrification/warming (VW), suggesting that VW did not negatively affect the meiotic spindle of the oocytes. In conclusion, UF-VIT seems more effective in OC owing to efficient cytoplasmic water molecule extraction, osmotic stress reduction, and minimization of cell contraction and expansion amplitude, thus compensating for the drawbacks of C-VIT.
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Affiliation(s)
- Jung-Ran Cho
- Infertility Center of Pusan National University Hospital, Busan 49241, Republic of Korea; (J.-R.C.); (J.-H.J.); (D.-B.L.)
- Laboratory of Animal Reproductive Physiology & Biotechnology, Department of Animal Science, Pusan National University Graduate School, Miryang 50463, Republic of Korea
| | - Eun-Hee Yu
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Pusan National University Hospital Biomedical Research Institute, Busan 49241, Republic of Korea; (E.-H.Y.); (H.-J.L.); (I.-H.K.)
| | - Hyun-Joo Lee
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Pusan National University Hospital Biomedical Research Institute, Busan 49241, Republic of Korea; (E.-H.Y.); (H.-J.L.); (I.-H.K.)
| | - In-Hye Kim
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Pusan National University Hospital Biomedical Research Institute, Busan 49241, Republic of Korea; (E.-H.Y.); (H.-J.L.); (I.-H.K.)
| | - Ji-Hye Jeong
- Infertility Center of Pusan National University Hospital, Busan 49241, Republic of Korea; (J.-R.C.); (J.-H.J.); (D.-B.L.)
- Laboratory of Animal Reproductive Physiology & Biotechnology, Department of Animal Science, Pusan National University Graduate School, Miryang 50463, Republic of Korea
| | - Dan-Bi Lee
- Infertility Center of Pusan National University Hospital, Busan 49241, Republic of Korea; (J.-R.C.); (J.-H.J.); (D.-B.L.)
| | - Seong-Keun Cho
- Laboratory of Animal Reproductive Physiology & Biotechnology, Department of Animal Science, Pusan National University Graduate School, Miryang 50463, Republic of Korea
| | - Jong-Kil Joo
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Pusan National University Hospital Biomedical Research Institute, Busan 49241, Republic of Korea; (E.-H.Y.); (H.-J.L.); (I.-H.K.)
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3
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Buderatska N, Gontar J, Petrushko M, Yurchuk T, Ilyin I, Piniaiev V, Fuller B. Embryological Characteristics and Preimplantation Genetic Testing for Aneuploidy of Embryos Derived from Cryopreserved Oocytes of Women of Different Reproductive Ages. Biopreserv Biobank 2023; 21:576-582. [PMID: 36409698 DOI: 10.1089/bio.2022.0055] [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] [Indexed: 11/22/2022] Open
Abstract
Oocyte vitrification is widely used for female fertility preservation. However, the efficacy of this procedure may depend on the women's age. The aim of the study was to compare the morphology, viability of cryopreserved oocytes, and their fertilization outcomes (fertilization, blastulation rate, level of embryo chromosomal aneuploidy-preimplantation genetic testing for aneuploidy [PGT-A]) in women of different reproductive ages. The studied oocytes were divided into groups depending on the age of patients: up to 30 years (group 1), 30-35 years (group 2), 36-40 years (group 3), and older than 40 years (group 4). It has been shown that in women of older reproductive age, the number of oocytes with polymorphism of endo- and extracytoplasmic structures was higher compared with younger patients. This could reflect on their cryosurvival rate, which was the highest in group 1 (98.1%) and the lowest was in group 4 (47.4%). With increasing age, the fertilization rate of cryopreserved oocytes and subsequent blastulation was decreased. However, the number of embryos with an aneuploid chromosome set number was increased. The chromosome set number euploidy rate of the embryos obtained from cryopreserved oocytes of advanced age women (group 4) did not differ from the fresh group with the same age (31.2% vs. 24.4%, p > 0.05), but the number of euploid embryos per patient was less than one (0.8 ± 0.1). Therefore, the decision to cryopreserve the oocytes of a patient of older reproductive age should be made individually for each situation, taking into account the prospects of obtaining full-fledged embryos and the chances of pregnancy.
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Affiliation(s)
| | | | - Maryna Petrushko
- Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
- ART-Clinic of Reproductive Medicine, Kharkiv, Ukraine
| | - Taisiia Yurchuk
- Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
| | | | - Volodymyr Piniaiev
- Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
- ART-Clinic of Reproductive Medicine, Kharkiv, Ukraine
| | - Barry Fuller
- Divison of Surgery & Interventional Science, Royal Free London NHS Trust & UCL, London, United Kingdom
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Li Z, Zhang K, Zhou Y, Zhao J, Wang J, Lu W. Role of Melatonin in Bovine Reproductive Biotechnology. Molecules 2023; 28:4940. [PMID: 37446601 PMCID: PMC10343719 DOI: 10.3390/molecules28134940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/07/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Melatonin has profound antioxidant activity and numerous functions in humans as well as in livestock and poultry. Additionally, melatonin plays an important role in regulating the biological rhythms of animals. Combining melatonin with scientific breeding management has considerable potential for optimizing animal physiological functions, but this idea still faces significant challenges. In this review, we summarized the beneficial effects of melatonin supplementation on physiology and reproductive processes in cattle, including granulosa cells, oocytes, circadian rhythm, stress, inflammation, testicular function, spermatogenesis, and semen cryopreservation. There is much emerging evidence that melatonin can profoundly affect cattle. In the future, we hope that melatonin can not only be applied to cattle, but can also be used to safely and effectively improve the efficiency of animal husbandry.
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Affiliation(s)
- Zhiqiang Li
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Kaiyan Zhang
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Yuming Zhou
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Jing Zhao
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Jun Wang
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Wenfa Lu
- Joint Laboratory of the Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Z.L.); (K.Z.); (Y.Z.); (J.Z.)
- Key Lab of Animal Production, Product Quality, and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
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5
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Makieva S, Stähli C, Xie M, Gil AV, Sachs MK, Leeners B. The impact of zygote vitrification timing on pregnancy rate in frozen-thawed IVF/ICSI cycles. Front Cell Dev Biol 2023; 11:1095069. [PMID: 36711030 PMCID: PMC9880319 DOI: 10.3389/fcell.2023.1095069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/03/2023] [Indexed: 01/14/2023] Open
Abstract
Introduction: Cryopreservation of bipronuclear (2PN) stage zygotes is an integral part of IVF laboratory practice in countries with strict embryo culture legislation. Vitrification of zygotes is compatible with several strategies in infertility treatments holding a freeze-all indication and allows for effective workload management in settings with limited resources. Although it yields high survival rates and clinical outcomes, the ideal timing to commence vitrification of zygotes is elusive while it is empirically practiced in the window between 17 and 21 h post-insemination (hpi). We aimed to deduce the association between pregnancy rate and the time interval from insemination (IVF and ICSI) to vitrification to contribute to the standardization ofzygote cryopreservation. Methods: A retrospective analysis of data on vitrification timings and pregnancy outcomes collected between 2011 and 2019 was performed. All included women received an embryo transfer after warming of vitrified zygotes at the 2PN stage. Results: A total of 468 embryo transfers were included of which 182 (38.9%) resulted in pregnancy and 286 (61.1%) not. Vitrification was on average performed 18.74 ±0.63 hpi in the pregnant group and 18.62 ± 0.64 hpi in the non-pregnant group (OR 1.36, 95% CI 1.01; 1.83, p = 0.045). A multivariate analysis controlling for uterine pathologies, maternal age, AMH, the number of MII oocytes, previous history of pregnancy success, endometriosis, AFC, nicotine intake and male factor infertility showed no predictive value of vitrification timing on pregnancy rate. Three time intervals between insemination and vitrification were defined: 17:00 to 18:00 hpi (Group A), 18:01 to 19:00 hpi (Group B) and 19:01 to 21:00 hpi (Group C). Pregnancy occurred in 40/130 women (30.80%) in Group A, in 115/281 women (40.90%) in Group B and in 27/57 women (47.40%) in Group C. Univariate but not multivariate analysis showed a significantly higher pregnancy rate after the latest time interval between insemination and 2PN vitrification when compared to the earliest (Group C vs. A, OR 2.03, 95% CI 1.07; 3.84, p = 0.031). Discussion: These findings encourage further investigation on the impact of vitrification timing on clinical outcomes and hold the potential to standardize cryopreservation of zygotes from IVF/ICSI cycles to eventually improve the quality of long-term ART outcomes.
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Affiliation(s)
- Sofia Makieva
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland,*Correspondence: Sofia Makieva,
| | - Celine Stähli
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Min Xie
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland
| | - Ana Velasco Gil
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland
| | - Maike Katja Sachs
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland
| | - Brigitte Leeners
- Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland
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6
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Tu F, Bhat M, Benson JD. Real-time computer assisted measurement of oocyte and embryo volume for assessment of transport parameters. Cryobiology 2022; 108:19-26. [PMID: 36084734 DOI: 10.1016/j.cryobiol.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022]
Abstract
Cryopreservation of gametes has revolutionized both animal agriculture and human reproductive medicine. Although many new technologies have tremendously improved the cryopreservation of oocytes and embryos, osmotic stress encountered during the equilibration process can cause their loss of function. Rational cryoprotective agent (CPA) equilibration strategies can be used to minimize this stress but require trained personnel to monitor the process in individual oocytes or embryos or require the use of suboptimal average transport parameter values in mathematically guided protocols. To enable individually optimized equilibration of CPAs in individual cells, here we establish experimental and computational techniques to track the osmotic behavior of individual bovine oocytes and embryos during CPA equilibration in real time. We designed a microfluidic device to provide a controlled flow of CPA and modified standard image analysis techniques to estimate real-time cell volume changes. In particular, we used a level-set method to define a boundary within a contour plot which could automate the image analysis process. A colour based level set algorithm coupled with contour smoothing not only provided the best fit but also reduced the segmentation time to well under a second per image. The accuracy of the automated method was comparable to human segmented images for both oocytes and embryos. This technology should enable both rapid evaluation of key biophysical parameters in oocytes and embryos undergoing CPA equilibration and the development of real-time feedback-control of CPA equilibration, enabling individual oocyte- and embryo-specific optimal protocols.
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Affiliation(s)
- Frankie Tu
- Department of Computer Science, Memorial University of Newfoundland, St John's, Newfoundland and Labrador, Canada; Department of Biology, University of Saskatchewan, Saskatoon, Canada
| | - Maajid Bhat
- Ro, Clinical Strategy, NY, NY, USA; Department of Biology, University of Saskatchewan, Saskatoon, Canada
| | - James D Benson
- Department of Biology, University of Saskatchewan, Saskatoon, Canada.
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7
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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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8
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Tang Y, Zhang Y, Liu L, Yang Y, Wang Y, Xu B. Glycine and Melatonin Improve Preimplantation Development of Porcine Oocytes Vitrified at the Germinal Vesicle Stage. Front Cell Dev Biol 2022; 10:856486. [PMID: 35281108 PMCID: PMC8907381 DOI: 10.3389/fcell.2022.856486] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/10/2022] [Indexed: 12/28/2022] Open
Abstract
Lipid-rich porcine oocytes are extremely sensitive to cryopreservation compared to other low-lipid oocytes. Vitrification has outperformed slowing freezing in oocyte cryopreservation and is expected to improve further by minimizing cellular osmotic and/or oxidative stresses. In this study, we compared the effects of loading porcine cumulus-oocyte complexes with glycine (an organic osmolyte) or glycine plus melatonin (an endogenous antioxidant) during vitrification, thawing and subsequent maturation to mitigate osmotic injuries or osmotic and oxidative damages on the developmental potential of porcine oocytes. Our data demonstrated that glycine treatment significantly increased the vitrification efficiency of porcine oocytes to levels comparable to those observed with glycine plus melatonin treatment. It was manifested as the thawed oocyte viability, oocyte nuclear maturation, contents of reactive oxygen species, translocation of cortical granules and apoptotic occurrence in mature oocytes, levels of ATP and transcripts of glycolytic genes in cumulus cells (markers of oocyte quality), oocyte fertilization and blastocyst development. However, the latter was more likely than the former to increase ATP contents and normal mitochondrial distribution in mature oocytes. Taken together, our results suggest that mitigating osmotic and oxidative stresses induced by vitrification and thawing can further enhance the developmental competency of vitrified porcine oocytes at the germinal vesicle stage.
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Affiliation(s)
- Yu Tang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ying Zhang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Lixiang Liu
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yifeng Yang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yan Wang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Baozeng Xu
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchu, China
- State Key Laboratory for Molecular Biology of Economic Animals, Chinese Academy of Agricultural Sciences, Changchun, China
- *Correspondence: Baozeng Xu, ,
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9
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Srirattana K, Hufana‐Duran D, Atabay EP, Duran PG, Atabay EC, Lu K, Liang Y, Chaikhun‐Marcou T, Theerakittayakorn K, Parnpai R. Current status of assisted reproductive technologies in buffaloes. Anim Sci J 2022; 93:e13767. [PMID: 36123790 PMCID: PMC9787342 DOI: 10.1111/asj.13767] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/05/2022] [Accepted: 08/25/2022] [Indexed: 12/30/2022]
Abstract
Buffaloes are raised by small farm holders primarily as source of draft power owing to its resistance to hot climate, disease, and stress conditions. Over the years, transformation of these animals from draft to dairy was deliberately carried out through genetic improvement program leading to the development of buffalo-based enterprises. Buffalo production is now getting more attention and interest from buffalo raisers due to its socioeconomic impact as well as its contribution to propelling the livestock industry in many developing countries. Reproduction of buffaloes, however, is confronted with huge challenge and concern as being generally less efficient to reproduce compared with cattle due to both intrinsic and extrinsic factors such as poor estrus manifestation, silent heat, marked seasonal infertility, postpartum anestrus, long calving interval, delayed puberty, inherently low number of primordial follicles in their ovaries, high incidence of atresia, and apoptosis. Assisted reproductive technologies (ARTs) are major interventions for the efficient utilization of follicle reserve in buffaloes. The present review focuses on estrus and ovulation synchronization for fixed time artificial insemination, in vitro embryo production, intracytoplasmic sperm injection, cryopreservation of oocytes and embryos, somatic cell nuclear transfer, the factors affecting utilization in various ARTs, and future perspectives in buffaloes.
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Affiliation(s)
- Kanokwan Srirattana
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
| | - Danilda Hufana‐Duran
- Reproduction and Physiology SectionDepartment of Agriculture‐Philippine Carabao CenterScience City of MunozNueva EcijaPhilippines,Department of Animal ScienceCentral Luzon State UniversityScience City of MunozNueva EcijaPhilippines
| | - Eufrocina P. Atabay
- Reproduction and Physiology SectionDepartment of Agriculture‐Philippine Carabao CenterScience City of MunozNueva EcijaPhilippines
| | - Peregrino G. Duran
- Reproduction and Physiology SectionDepartment of Agriculture‐Philippine Carabao CenterScience City of MunozNueva EcijaPhilippines,Department of Animal ScienceCentral Luzon State UniversityScience City of MunozNueva EcijaPhilippines
| | - Edwin C. Atabay
- Reproduction and Physiology SectionDepartment of Agriculture‐Philippine Carabao CenterScience City of MunozNueva EcijaPhilippines,Department of Animal ScienceCentral Luzon State UniversityScience City of MunozNueva EcijaPhilippines
| | - Kehuan Lu
- Animal Reproduction InstituteGuangxi UniversityNanningGuangxiChina
| | - Yuanyuan Liang
- Department of Reproductive MedicineLiuzhou General HospitalLiuzhouGuangxiChina
| | - Thuchadaporn Chaikhun‐Marcou
- Obstetrics Gynecology Andrology and Animal Biotechnology Clinic, Faculty of Veterinary MedicineMahanakorn University of TechnologyBangkokThailand
| | - Kasem Theerakittayakorn
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
| | - Rangsun Parnpai
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural TechnologySuranaree University of TechnologyNakhon RatchasimaThailand
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10
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Girka E, Gatenby L, Gutierrez EJ, Bondioli KR. The effects of microtubule stabilizing and recovery agents on vitrified bovine oocytes. Theriogenology 2022; 182:9-16. [DOI: 10.1016/j.theriogenology.2022.01.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 12/29/2022]
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11
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Li J, Liu L, Weng J, Yin TL, Yang J, Feng HL. Biological roles of l-carnitine in oocyte and early embryo development. Mol Reprod Dev 2021; 88:673-685. [PMID: 34618389 DOI: 10.1002/mrd.23542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 08/23/2021] [Accepted: 09/24/2021] [Indexed: 12/13/2022]
Abstract
Poor oocyte quality is responsible for female infertility. Multiple studies have been carried out to find supplements to enhance oocyte quality and mitigate infertility problems. l-carnitine and its derivatives have diverse roles in developing oocytes and early embryos. This review focuses on the in vitro and in vivo studies that using l-carnitine alone or in combination with other supplements for oocyte quality enhancement. The key roles of l-carnitine in oocyte quality and embryo growth were summarized, and the underlying mechanism was also elucidated. l-carnitine helps in the lipid metabolism process by controlling the transfer of fatty acids to mitochondria for β-oxidation. l-carnitine modulates glucose metabolism and enhances respiratory chain enzyme activity. Furthermore, it acts as an antioxidant to prevent oxidative damage and inhibit apoptosis, a signal in response to oxidative stress. Results show the potential of l-carnitine as a potential agent in assisted reproductive technology to improve oocyte quality and the subsequent embryonic development.
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Affiliation(s)
- Jiajian Li
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences, Capital Medical University, Beijing, China.,Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Lingyan Liu
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | - Jing Weng
- School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Tai-Lang Yin
- Reproductive Medicine Center, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jing Yang
- Reproductive Medicine Center, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Huai L Feng
- The New York Fertility Center, New York-Presbyterian Queens Affiliate with Weill Medical College of Cornell University, New York, New York, USA
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12
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Raza SHA, Abd El-Aziz AH, Abdelnour SA, Easa AA, Alagawany M, Farag MR, Al-Mutary MG, Elfadadny A, Khan R, Quan G, Cheng G, Zan L. The role of forskolin as a lipolytic stimulator during in vitro oocyte maturation and the in vitro embryo production of livestock. Reprod Domest Anim 2021; 56:1486-1496. [PMID: 34592022 DOI: 10.1111/rda.14021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/28/2021] [Indexed: 11/28/2022]
Abstract
Cryopreservation is a modern technique which assists in the preservation of genetic material from oocytes and embryos for a long time. However, elevated vulnerability to cryopreservation due to the large accumulation of intracellular lipids within oocytes or embryos avoids success of this method. These lipids remain the main crucial factor limiting survival rates of oocytes and embryos after thawing. Lipid ingathering in the oocyte cytoplasm augments lipid peroxidation (LPO) and oxidative stress increases the apoptosis process, declines the viability after thawing, declines cytoskeleton actin filament injuries, lowers the blastocyst rates and reduces cryotolerance in the early stages of embryo development. There have been several attempts to reduce the ingathering of intracellular lipids in oocytes or embryos during the cryopreservation process, in that way enhancing the competence of cryopreserved oocytes or embryos and increasing their viability. One of the most applied agents for chemical delipidation is forskolin. Forskolin exhibited a possible part in improving the oocytes cryopreservation through stimulating cyclic adenosine monophosphate (cAMP) production. The main purpose of cAMP modulation is to provide energy to sustain the mammalian oocytes´ meiotic arrest. The purpose of the existing article is to assess and offer more evidence concerning the forskolin utilization as a modulator of cAMP during the cryopreservation of oocytes and its influence on meiosis completion and the reorganization of cytoplasm, which are prerequisites for the development of oocytes in addition to the contribution to fertilization and subsequently, the development of embryos.
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Affiliation(s)
- Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,National Beef Cattle Improvement Center, Northwest A&F University, Yangling, China
| | - Ayman H Abd El-Aziz
- Animal Husbandry and Animal Wealth Development Department, Faculty of Veterinary Medicine, Daman Hour University, Damanhour, Egypt
| | - Sameh A Abdelnour
- Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Ahmed A Easa
- Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Damanhour, Egypt
| | - Mahmoud Alagawany
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Mayada R Farag
- Forensic Medicine and Toxicology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Mohsen G Al-Mutary
- Department of Basic Sciences, College of Education, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ahmed Elfadadny
- Department of Animal Medicine, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Rajwali Khan
- Department of Livestock Management, Breeding and Genetics, The University of Agriculture Peshawar, Peshawar, Pakistan
| | - Guobo Quan
- Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Gong Cheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,National Beef Cattle Improvement Center, Northwest A&F University, Yangling, China
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13
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Abbasi Y, Hajiaghalou S, Baniasadi F, Mahabadi VP, Ghalamboran MR, Fathi R. Fe 3O 4 magnetic nanoparticles improve the vitrification of mouse immature oocytes and modulate the pluripotent genes expression in derived pronuclear-stage embryos. Cryobiology 2021; 100:81-89. [PMID: 33781804 DOI: 10.1016/j.cryobiol.2021.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 03/20/2021] [Accepted: 03/20/2021] [Indexed: 01/15/2023]
Abstract
The vitrification of Germinal Vesicle (immature) oocytes is beneficial for preservation of fertility in cases involving reproductive problems. The use of nanoparticles (NP(s)) as vitrification aid is a novel approach towards improving vitrification efficiency. The efficacy of use of iron oxide (Fe3O4) nanoparticles as vitrification aid is reported in this paper. Immature oocytes from NMRI mice were collected and divided into non-vitrified (nVit), Vitrified (Vit) and Vitrified + NP (Vit+NP) groups. In the Vit+NP group, solutions containing Fe3O4 nanoparticles at three different concentrations (0.004%, 0.008% and 0.016% w/v) were separately added to the vitrification solution and their effects on the vitrification of the oocytes were compared. The concentration that was found to be best performing (0.004% w/v) was used in vitrification studies in subsequent experiments. Mitochondrial function, apoptosis incidence, ultrastructure alteration, nuclear maturity, embryo formation and genes expression (Nanog, Oct4, Cdx2, and Sox2) were evaluated in response to the addition of the nanoparticle solution during vitrification. Nuclear maturity of oocyte and embryo formation increased significantly (P ≤ 0.05) in the vitrified + NP group. Expression of Sox2 also increased significantly in both vitrified and vitrified + NP groups. While there was a significant increase in Oct4 expression in the vitrified group as compared to control, there was no significant difference between vitrified and Vit+NP groups. The expression of Cdx2 decreased significantly (P ≤ 0.05) in the Vit+NP group. From these observations, Fe3O4 nanoparticles could protect immature oocytes from cryodamages, positively affect vitrification and modulate the pluripotency of derived pronuclear-stage embryos.
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Affiliation(s)
- Yasaman Abbasi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran; Department of Cell and Molecular Biology, University of Science and Culture, ACECR, Tehran, Iran
| | - Samira Hajiaghalou
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Farzaneh Baniasadi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran; Faculty of Science, Physics Department, Shahid Beheshti University, Iran
| | - Vahid Pirhajati Mahabadi
- Neuroscience Research Center, Iran University of Medical Science, Tehran, Iran; Cellular and Molecular Research Center, Iran University of Medical Science, Tehran, Iran
| | | | - Rouhollah Fathi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
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14
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Peinado I, Moya I, Sáez-Espinosa P, Barrera M, García-Valverde L, Francés R, Torres P, Gómez-Torres MJ. Impact of Maturation and Vitrification Time of Human GV Oocytes on the Metaphase Plate Configuration. Int J Mol Sci 2021; 22:ijms22031125. [PMID: 33498768 PMCID: PMC7865957 DOI: 10.3390/ijms22031125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/28/2022] Open
Abstract
The combination of in vitro maturation (IVM) techniques and oocyte vitrification (OV) could increase the number of useful oocytes in different types of patients. IVM and subsequent OV is the most widely used clinical strategy. Would the results improve if we reverse the order of the techniques? Here, we evaluated survival, in vitro maturation, time to extrude the first polar body (PB), and the metaphase plate configuration of human prophase I (GV) oocytes before or after their vitrification. Specific, 195 GV oocytes from 104 patients subjected to controlled ovarian stimulation cycles were included. We stablished three experimental groups: GV oocytes vitrified and IVM (Group GV-Vit), GV oocytes IVM and vitrified at MII stage (Group MII-Vit), and GV oocytes IVM (Group not-Vit). All of them were in vitro matured for a maximum of 48 h and fixed to study the metaphase plate by confocal microscopy. According to our results, the vitrification of immature oocytes and their subsequent maturation presented similar survival, maturation, and metaphase plate conformation rates, but a significantly higher percentage of normal spindle than the standard strategy. Additionally, the extension of IVM time to 48 h did not seem to negatively affect the oocyte metaphase plate configuration.
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Affiliation(s)
- Irene Peinado
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - Isabel Moya
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | | | - Macarena Barrera
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Laura García-Valverde
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Raquel Francés
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Energy and Memory, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 75005 Paris, France
| | - Patricia Torres
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - María José Gómez-Torres
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
- Cátedra Human Fertility, Universidad de Alicante, 03690 Alicante, Spain
- Correspondence:
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15
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Agnieszka N, Joanna K, Wojciech W, Adam O. In vitro maturation of equine oocytes followed by two vitrification protocols and subjected to either intracytoplasmic sperm injection (ICSI) or parthenogenic activation. Theriogenology 2021; 162:42-48. [PMID: 33444915 DOI: 10.1016/j.theriogenology.2020.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 11/28/2022]
Abstract
The aim of this study was determine the viability and developmental competence of equine oocytes after IVM and vitrification using the Rapid-I method, as part of an effort to develop an effective equine oocyte vitrification protocol. Equine oocytes were collected by scraping ovarian follicles of slaughtered mares. A total of 1052 ovaries were used in this study, from which 3135 oocytes were obtained. Of the 2853 oocytes retrieved, 2557 underwent in vitro maturation for approximately 36 h. After in vitro culture, 1202 oocytes (47%) had a first polar body. To evaluate the toxicity of the solutions (Experiment I), oocytes were exposed to vitrification media without cryopreservation. Of all the experimental groups evaluated, the best results were obtained for IVM oocytes exposed to EquiproVitKit media (IVM + TOX EquiVitKit), with a viability rate of 69.5%. In the Experiment II, oocytes, either freshly collected from the ovary or after in vitro maturation (IVM), were vitrified using either the EquiPro VitKit or an in-house medium containing 18% Ficoll, 40% ethylene glycol and 0.3 M sucrose. Oocytes were stained with fluorescein diacetate and ethidium bromide to evaluate viability. In vitro matured oocytes vitrified using EquiproVitKit media (IVM + VIT EquiVitKit) had a cryosurvival rate of 63%. In the last part of the study (Experiment III), vitrified IVM oocytes were activated by 7.5 μM ionomycin in TCM-199 for 5 min TCM 199 (5 min) combined with 2 mM 6-DMAP in TCM-99 with 10% FBS (4.5 h) or in vitro fertilized using ICSI. Development of potential embryos after activation in TCM-199 medium, showed a cleavage rate was 10.2%, compared to 22.5% of oocytes cultured in G1/G2 medium. ICSI of vitrified IVM oocytes resulted in 20% embryo development to the 16-cell stage, compared to 33.3% in the control. The vitrification of oocytes after IVM by Rapid-I method is a good way to preserve genetic material in horses.
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Affiliation(s)
- Nowak Agnieszka
- University of Agriculture in Krakow, Department of Animal Reproduction, Anatomy and Genomics, Al. Mickiewicza 24/28, 30-059, Krakow, Poland.
| | - Kochan Joanna
- University of Agriculture in Krakow, Department of Animal Reproduction, Anatomy and Genomics, Al. Mickiewicza 24/28, 30-059, Krakow, Poland
| | - Witarski Wojciech
- National Research Institute of Animal Production, Department of Animal Molecular Biology, Ul. Krakowska 1, 32-083, Balice Near Krakow, Poland
| | - Okólski Adam
- University of Agriculture in Krakow, University Centre of Veterinary Medicine UJ-UR, Al. Mickiewicza 24/28, 30-059, Krakow, Poland
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16
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Chibelean CB, Petca RC, Radu DC, Petca A. State of the Art in Fertility Preservation for Female Patients Prior to Oncologic Therapies. ACTA ACUST UNITED AC 2020; 56:medicina56020089. [PMID: 32102169 PMCID: PMC7073829 DOI: 10.3390/medicina56020089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/07/2020] [Accepted: 02/18/2020] [Indexed: 12/14/2022]
Abstract
Quality of life improvement stands as one of the main goals of the medical sciences. Increasing cancer survival rates associated with better early detection and extended therapeutic options led to the specific modeling of patients’ choices, comprising aspects of reproductive life that correlated with the evolution of modern society, and requires better assessment. Of these, fertility preservation and ovarian function conservation for pre-menopause female oncologic patients pose a contemporary challenge due to procreation age advance in evolved societies and to the growing expectations regarding cancer treatment. Progress made in cell and tissue-freezing technologies brought hope and shed new light on the onco-fertility field. Additionally, crossing roads with general fertility and senescence studies proved highly beneficial due to the enlarged scope and better synergies and funding. We here strive to bring attention to this domain of care and to sensitize all medical specialties towards a more cohesive approach and to better communication among caregivers and patients.
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Affiliation(s)
- Călin Bogdan Chibelean
- Department of Urology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu-Mures, 540139 Targu-Mures, Romania;
- Mureș County Hospital, 540136 Targu-Mures, Romania
| | - Răzvan-Cosmin Petca
- “Carol Davila” University of Medicine and Pharmacy, 050471 Bucharest, Romania;
- Department of Urology, “Prof. Dr. Th. Burghele” Clinical Hospital, 050659 Bucharest, Romania
- Correspondence: ; Tel.: +40-722-224492
| | | | - Aida Petca
- “Carol Davila” University of Medicine and Pharmacy, 050471 Bucharest, Romania;
- Department of Obstetrics and Gynecology, Elias University Emergency Hospital, 011461 Bucharest, Romania
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N-acetylcysteine addition after vitrification improves oocyte mitochondrial polarization status and the quality of embryos derived from vitrified murine oocytes. BMC Vet Res 2019; 15:31. [PMID: 30654800 PMCID: PMC6337864 DOI: 10.1186/s12917-018-1743-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 12/07/2018] [Indexed: 12/24/2022] Open
Abstract
Background Vitrification is the safest method to cryopreserve oocytes, however the process alters mitochondrial function resulting from increased reactive oxygen species (ROS) production. Our aim was to alleviate ROS stress in vitrified mice oocytes using N-acetylcysteine (NAC at 1 mM), to improve the oocyte’s developmental competence. Results Hence, four experimental groups were compared: fresh oocytes (F-C), vitrified oocytes (V-C), NAC addition prior to oocyte vitrification (V-NAC-Pre) and NAC addition after vitrification (V-NAC-Post). V-NAC-Pre and V-NAC-Post exhibited higher levels of mitochondrial polarization compared to vitrified oocytes (36.5 ± 3.1, 37.7 ± 1.3 and 27.2 ± 2.4 measured as the spatial coefficient of variation/oocyte respectively, mean ± SEM; p < 0.05). However, ROS production increased in vitrified oocytes added with NAC compared to the vitrified control (1124.7 ± 102.1 [V-NAC-Pre] and 1063.2 ± 82.1 [V-NAC-Post] vs. 794.6 ± 164.9 [V-C]; arbitrary fluorescence units/oocyte, mean ± SEM; p < 0.05). ATP significantly decreased in V-NAC-Pre compared to V-NAC-Post oocytes (18.5 ± 6.9 vs. 54.2 ± 4.6 fmol/oocyte respectively, mean ± SEM; p < 0.05), and no differences were observed between V-NAC-Post, F-C and V-C groups. Blastocyst rates derived from F-C oocytes was higher than those derived from V-NAC-Pre (90.7 ± 1.8 vs. 79.1 ± 1.8, respectively, mean % ± SEM,; p < 0.05) but similar to those derived from V-NAC-Post (90.7 ± 1.8, mean % ± SEM, p > 0.05). Total blastomere count of blastocysts derived from V-NAC-Post after in vitro fertilization (IVF) was higher than embryos produced from V-C. Conclusions The addition of NAC after vitrification improves the quality of vitrified mature murine oocytes while its addition prior to vitrification is advised against.
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Rheem SMAE, Elsharkawy S. Effect of Cumulus Cells on the Efficiency of Vitrified-Thawed Immature Cattle Oocytes. OPEN JOURNAL OF OBSTETRICS AND GYNECOLOGY 2019; 09:669-678. [DOI: 10.4236/ojog.2019.95066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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19
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Sun J, Guo Y, Zhang Q, Bu S, Li B, Wang Q, Lai D. Chronic restraint stress disturbs meiotic resumption through APC/C-mediated cyclin B1 excessive degradation in mouse oocytes. Cell Cycle 2018; 17:1591-1601. [PMID: 29911914 DOI: 10.1080/15384101.2018.1471316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Psychological stress, which exerts detrimental effects on human reproduction, may compromise the meiotic competence of oocytes. Meiotic resumption, germinal vesicle breakdown (GVBD), is the first milestone to confer meiotic competence to oocytes. In the practice of assisted reproductive technology (ART), the timing for GVBD is associated with the rates of cleavage and blastocyst formation. However, whether chronic stress compromises oocyte competence by influencing GVBD and the underlying mechanisms are unclear. In the present study, a chronic restraint stress (CRS) mouse model was used to investigate the effects of stress on oocyte meiotic resumption, as well as the mechanisms. Following a 4-week chronic restraint stress in female mice, the percentage of abnormal bipolar spindles increased and indicated compromised oocyte competence in the CRS group. Furthermore, we identified a decreased percentage of GVBD and prolonged time of GVBD in the CRS mouse oocytes compared with the control group. CRS simultaneously reduced the expression of cyclin B1 (CCNB1), which represents a regulatory subunit of M-phase/mature promoting factor (MPF). However, MG132, an inhibitor of anaphase-promoting complex/cyclosome (APC/C), could rescue the prolonged time of GVBD and increase the expression level of CCNB1 of oocytes from the CRS mice. Collectively, our results demonstrated that stress disturbed meiotic resumption through APC/C-mediated CCNB1 degradation, thus providing a novel understanding for stress-related oocyte quality decline; moreover, it may provide a non-invasive approach to select high-quality gametes and novel targets for molecular therapy to treat stress-related female infertility.
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Affiliation(s)
- Junyan Sun
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Ying Guo
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Qiuwan Zhang
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Shixia Bu
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Boning Li
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Qian Wang
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
| | - Dongmei Lai
- a The International Peace Maternity and Child Health Hospital, School of Medicine , Shanghai Jiaotong University , Shanghai , China
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20
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A recovery time after warming restores mitochondrial function and improves developmental competence of vitrified ovine oocytes. Theriogenology 2018; 110:18-26. [DOI: 10.1016/j.theriogenology.2017.12.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/27/2017] [Accepted: 12/15/2017] [Indexed: 11/21/2022]
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21
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Majidi Gharenaz N, Movahedin M, Mazaheri Z. Effects of Re-Vitrification of Mouse Morula and Early Blastocyst Stages on Apoptotic Gene Expression and Developmental Potential. CELL JOURNAL 2017; 19:614-619. [PMID: 29105396 PMCID: PMC5672100 DOI: 10.22074/cellj.2018.4892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 10/16/2016] [Indexed: 11/21/2022]
Abstract
Objective Re-vitrification of embryos immediately after thawing or after a culture period could be used to preserve
the extra embryos after embryo transfer. This study aims to clarify the effect of re-vitrification on Bax and Bcl-2 gene
expressions of compact and early blastocyst stage embryos.
Materials and Methods This experimental study was performed on mouse embryos. We collected 8-cell stage
embryos (n=400) from female mature mice, 60-62 hoursafter injection of human chorionic gonadotropin (hCG). The
embryos were divided into 5 groups: fresh (n=80), vitrified at the 8-cell stage (n=80), vitrified at the blastocyst stage
(n=80), vitrified at the 8-cell stage, and re-vitrified at the compact (n=80) and early blastocyst stages (n=80). Embryos
were vitrified by cryolock. We analyzed the developmental rates of the vitrified-warmed embryos with the chi-square
test. Quantitative polymerase chain reaction (qPCR) data were analyzed with SPSS version 16 using one-way analysis
of variance (ANOVA) followed by Tukey’s post hoc test. P<0.05 were considered statistically significant.
Results The expanded blastocyst formation rate showed a significant difference in re-vitrified embryos compared
with fresh embryos (P<0.05). However, this result was similar between the two re-vitrified groups. Our data showed
a significant difference in expression of the Bax and Bcl-2 genes between re-vitrified and fresh embryos (P<0.05).
Expressions of the Bax and Bcl-2 genes showed no significant difference between the two re-vitrified groups.
Conclusion Based on our study, re-vitrification could affect developmental rate and expressions of the Bax and Bcl2 genes.
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Affiliation(s)
- Nasrin Majidi Gharenaz
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mansoureh Movahedin
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Zohreh Mazaheri
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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22
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Paul AK, Liang Y, Srirattana K, Nagai T, Parnpai R. Vitrification of bovine matured oocytes and blastocysts in a paper container. Anim Sci J 2017; 89:307-315. [DOI: 10.1111/asj.12892] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 07/10/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Ashit Kumar Paul
- Embryo Technology and Stem Cell Research Center; School of Biotechnology; Suranaree University of Technology; Nakhon Ratchasima Thailand
- Department of Medicine and Surgery; Faculty of Animal Science and Veterinary Medicine; Patuakhali Science and Technology University; Barisal Bangladesh
| | - Yuanyuan Liang
- Embryo Technology and Stem Cell Research Center; School of Biotechnology; Suranaree University of Technology; Nakhon Ratchasima Thailand
| | - Kanokwan Srirattana
- Embryo Technology and Stem Cell Research Center; School of Biotechnology; Suranaree University of Technology; Nakhon Ratchasima Thailand
| | - Takashi Nagai
- International Cooperation Section; National Agriculture and Food Research Organization (NARO); Tsukuba Japan
- Seoul National University 1 Gwanak-ro; Gwanak-gu Seoul Korea
| | - Rangsun Parnpai
- Embryo Technology and Stem Cell Research Center; School of Biotechnology; Suranaree University of Technology; Nakhon Ratchasima Thailand
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Faizah Z, Darsini N, Hinting A. FERTILIZATION OF BOVINE OOCYTES VITRIFIED PRE- AND POST IN VITRO MATURATION. FOLIA MEDICA INDONESIANA 2017. [DOI: 10.20473/fmi.v52i2.5222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The success rate of fertilization post save frozen oocytes is still very low, because the oocyte has distinctive features, namely the volume ratio and a lower surface to the limited penetration of water and cryoprotectants penetrate cells. Beside mature oocytes have a thread spindles are particularly vulnerable to the drop in temperature. Keep frozen oocytes is needed, especially in women who needed rescue fertility so their oosit can be fertilized. Maturation is done in TC 100 mL medium covered with mineral oil in a petri dish with a diameter of 36 mm. Oocyte vitrification begins with washing in PBS supplemented medium serum 20% for 1-2 minutes, followed by serum in the medium PBS + 20% + 10% ethylene glycol for 10-14 minutes. Then oocyte vitrification medium is transported in PBS + serum 20% + sucrose 0.5M ethylene glycol + 15% + 15% PROH for 25-30 seconds. Thawing oocytes is done by successive immersed in the media: 1). PBS + 20% serum + 0.5M sucrose, 2). PBS + 20% serum + 0.25M sucrose, and 3). PBS + 20% serum + 0.1 M sucrose. Insemination is done in rosset, and the number of fertilization was observed after 48 hours. Fertilization in the control group amounted to 42.97%, while the K1 and K2 there are no fertilization at all. The analysis showed that fertilization in the control and treatment groups significantly different at p <0.05 in both treatment groups K1 or K2 there are no fertilization at all. The conclusions of this study is there is no difference between the amount of fertilization of bovine oocytes were vitrified pre and post-maturation in vitro.
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Ladanyi C, Mor A, Christianson MS, Dhillon N, Segars JH. Recent advances in the field of ovarian tissue cryopreservation and opportunities for research. J Assist Reprod Genet 2017; 34:709-722. [PMID: 28365839 PMCID: PMC5445043 DOI: 10.1007/s10815-017-0899-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 03/01/2017] [Indexed: 12/11/2022] Open
Abstract
PURPOSE The purpose of this study was to summarize the latest advances and successes in the field of ovarian tissue cryopreservation while identifying gaps in current knowledge that suggest opportunities for future research. METHODS A systematic review was performed according to PRISMA guidelines for all relevant full-text articles in PubMed published in English that reviewed or studied historical or current advancements in ovarian tissue cryopreservation and auto-transplantation techniques. RESULTS Ovarian tissue auto-transplantation in post-pubertal women is capable of restoring fertility with over 80 live births currently reported with a corresponding pregnancy rate of 23 to 37%. The recently reported successes of live births from transplants, both in orthotopic and heterotopic locations, as well as the emerging methods of in vitro maturation (IVM), in vitro culture of primordial follicles, and possibility of in vitro activation (IVA) suggest new fertility options for many women and girls. Vitrification, as an ovarian tissue cryopreservation technique, has also demonstrated successful live births and may be a more cost-effective method to freezing with less tissue injury. Further, transplantation via the artificial ovary with an extracellular tissue matrix (ECTM) scaffolding as well as the effects of sphingosine-1-phosphate (SIP) and fibrin modified with heparin-binding peptide (HBP), heparin, and a vascular endothelial growth factor (VEGF) have demonstrated important advancements in fertility preservation. As a fertility preservation method, ovarian tissue cryopreservation and auto-transplantation are currently considered experimental, but future research may pave the way for these modalities to become a standard of care for women facing the prospect of sterility from ovarian damage.
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Affiliation(s)
- Camille Ladanyi
- Department of Obstetrics and Gynecology, Maine Medical Center, Portland, ME 04102 USA
| | - Amir Mor
- Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219 USA
| | - Mindy S. Christianson
- Department of Gynecology and Obstetrics, Division of Reproductive Endocrinology, Johns Hopkins University School of Medicine, Baltimore, MD 21287 USA
| | - Namisha Dhillon
- University of Toledo College of Medicine, Toledo, OH 43614 USA
| | - James H. Segars
- Howard W. and Georgeanna Seegar Jones Division of Reproductive Sciences and Women’s Health Research, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, 720 Rutland Ave, Ross Building (Room 624), Baltimore, MD 21205 USA
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Gabriel PR, Torres P, Fratto MC, Cisale H, Claver JA, Lombardo DM, Fischman ML. Effects of different sucrose concentrations on vitrified porcine preantral follicles: Qualitative and quantitative analysis. Cryobiology 2017; 76:1-7. [DOI: 10.1016/j.cryobiol.2017.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 05/09/2017] [Accepted: 05/10/2017] [Indexed: 01/22/2023]
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Wiesak T, Wasielak M, Złotkowska A, Milewski R. Effect of vitrification on the zona pellucida hardening and follistatin and cathepsin B genes expression and developmental competence of in vitro matured bovine oocytes. Cryobiology 2017; 76:18-23. [PMID: 28487134 DOI: 10.1016/j.cryobiol.2017.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 12/15/2022]
Abstract
The purpose of our study was to assess the effect of vitrification with or without the presence of calcium in the vitrification solution on the: 1) diameter of oocytes and thickness of the zona pellucida, 2) zona pellucida hardening, 3) expression of mRNA follistatin (FST) and cathepsin B (CTSB) in oocytes and 4) developmental competence of embryos derived from in vitro matured and vitrified oocytes. The results of our study demonstrate, that vitrification did not alter thickness of the zona pellucida and diameter of the oocytes, however it triggered hardening of the zona pellucida. The presence of calcium in the vitrification solutions intensified hardening of zona in immature and mature oocytes (P < 0.04, P < 0.001, respectively) and provoked increased mRNA FST expression in oocytes matured in vitro compared to immature oocytes (P < 0.01) and those vitrified without calcium (P < 0.004). CTSB mRNA expression was increased in immature oocytes and oocytes vitrified with calcium compare to mature oocytes (P < 0.02). The developmental potential of vitrified oocytes was impaired compared to non-vitrified oocytes, being more evident in oocytes vitrified with calcium. In summary, vitrification did not change the oocyte diameter and thickness of the zona pellucida and expression of FST and CTSB mRNA. It diminished developmental potential of the vitrified oocytes. The presence of calcium in the vitrification solutions increased hardening of zona pellucida as well as affected the level of FST and CTSB mRNA in oocytes and developmental potential of these oocytes.
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Affiliation(s)
- Teresa Wiesak
- Department of Gamete and Embryo Biology, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland.
| | - Marta Wasielak
- Department of Gamete and Embryo Biology, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland; Center of Gynaecology and Endocrinology and Reproductive Medicine - Artemida, Olsztyn, Poland
| | - Aleksandra Złotkowska
- Department of Hormonal Action Mechanisms, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Robert Milewski
- Department of Statistics and Medical Informatics, Medical University of Bialystok, Poland
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Mahesh YU, Gibence HRW, Shivaji S, Rao BS. Effect of different cryo-devices on in vitro maturation and development of vitrified-warmed immature buffalo oocytes. Cryobiology 2017; 75:106-116. [DOI: 10.1016/j.cryobiol.2017.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/12/2016] [Accepted: 01/12/2017] [Indexed: 11/17/2022]
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Monteiro CAS, Leal GR, Saraiva HFRDA, Garcia JM, Camargo AJDR, Serapião RV, Nogueira LAG, Rodrigues ALR, Oliveira CS. Short term culture with cAMP modulators before vitrification significantly improve actin integrity in bovine oocytes. Livest Sci 2017. [DOI: 10.1016/j.livsci.2017.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Cao X, Li J, Xue H, Wang S, Zhao W, Du Z, Yang Y, Yue Z. Effect of vitrification on meiotic maturation, mitochondrial distribution and glutathione synthesis in immature silver fox cumulus oocyte complexes. Theriogenology 2017; 91:104-111. [DOI: 10.1016/j.theriogenology.2016.12.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 12/22/2016] [Accepted: 12/29/2016] [Indexed: 10/20/2022]
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Impact of prolonged oocyte incubation time before vitrification on oocyte survival, embryo formation, and embryo quality in mice. In Vitro Cell Dev Biol Anim 2017; 53:525-531. [PMID: 28160207 DOI: 10.1007/s11626-017-0130-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/02/2017] [Indexed: 10/20/2022]
Abstract
Oocyte incubation time before freezing is one of the factors affecting oocyte vitrification. In the assisted reproductive technology (ART) clinics, it is sometimes decided to perform oocyte vitrification after a long period of incubation time due to various conditions, such as inability to collect semen samples, unsuccessful urological interventions (PESA, TESE, etc.), or unexpected conditions. A time factor of up to 6 h has been studied in the available reports. Therefore, this study was designed to evaluate oocyte incubation time before freezing at 0, 6, 12, 18, and 24 h after retrieval. Metaphase II (MII) oocytes were obtained from NMRI female mice after being randomly divided into the five groups of 0, 6, 12, 18, and 24 h of freezing via hormonal stimulation following retrieval and entered into the vitrification-warming process. The thawed oocytes were evaluated according to the survival criteria and then inseminated with the sperms of male mice for in vitro fertilization. The next day, the embryo formation rate and embryo quality were assessed. Our results demonstrated that even after 24 h of incubation, the survival rate of oocytes was 51.35% with the embryo formation rate of 73.21%. However, the survival and embryo formation rates significantly decreased within 12, 18, and 24 h after retrieval compared to the groups vitrified at 0 h. The embryo quality was significantly reduced by vitrification at 0 to 24 h after retrieval. According to our data, although a prolonged incubation time before freezing reduced the survival rate, there was still a chance for oocytes to stay alive with acceptable embryo formation and quality rates after vitrification warming of oocytes.
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The effect of ovine oocyte vitrification on expression of subset of genes involved in epigenetic modifications during oocyte maturation and early embryo development. Theriogenology 2016; 86:2136-2146. [DOI: 10.1016/j.theriogenology.2016.07.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 07/05/2016] [Accepted: 07/05/2016] [Indexed: 11/20/2022]
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Glycine increases preimplantation development of mouse oocytes following vitrification at the germinal vesicle stage. Sci Rep 2016; 6:37262. [PMID: 27845423 PMCID: PMC5109034 DOI: 10.1038/srep37262] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 10/26/2016] [Indexed: 11/08/2022] Open
Abstract
Ice-free cryopreservation, referred to as vitrification, is receiving increased attention in the human and animal assisted reproduction. However, it introduces the detrimental osmotic stress by adding and removing high contents of cryoprotectants. In this study, we evaluated the effects of normalizing cell volume regulation by adding glycine, an organic osmolyte, during vitrification of mouse germinal vesicle stage oocyte and/or subsequent maturation on its development. The data showed that glycine supplementation in either vitrification/thawing or maturation medium significantly improved the cytoplasmic maturation of MII oocytes manifested by spindle assembly, chromosomal alignment, mitochondrial distribution, euploidy rate, and blastocyst development following fertilization in vitro, compared to the control without glycine treatment. Furthermore, glycine addition during both vitrification/thawing and maturation further enhanced the oocyte quality demonstrated by various markers, including ATP contents and embryo development. Lastly, the effect of anti-apoptosis was also observed when glycine was added during vitrification. Our result suggests that reducing osmotic stress induced by vitrification could improve the development of vitrified mouse oocyte.
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Sigalos G, Triantafyllidou O, Vlahos N. How do laboratory embryo transfer techniques affect IVF outcomes? A review of current literature. HUM FERTIL 2016; 20:3-13. [PMID: 27844488 DOI: 10.1080/14647273.2016.1255357] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Over the last few years, many studies have focused on embryo selection methods, whereas little attention has been given to the standardization of the procedure of embryo transfer. In this review, several parameters of the embryo transfer procedure are examined, such as the: (i) culture medium volume and loading technique; (ii) syringe and catheters used for embryo transfer; (iii) viscosity and composition of the embryo transfer medium; (iv) environment of embryo culture; (v) timing of embryo transfer; (vi) and standardization of the embryo transfer techniques. The aim of this manuscript is to review these factors and compare the existing embryo transfer techniques and highlight the need for better embryo transfer standardization.
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Affiliation(s)
- George Sigalos
- a 2nd Department of Obstetrics and Gynaecology , Aretaieion Hospital University of Athens , Athens, Greece.,b Reproductive Medicine Unit , "Lito" Maternity Hospital , Athens , Greece
| | | | - Nikos Vlahos
- a 2nd Department of Obstetrics and Gynaecology , Aretaieion Hospital University of Athens , Athens, Greece
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Mandawala A, Harvey S, Roy T, Fowler K. Cryopreservation of animal oocytes and embryos: Current progress and future prospects. Theriogenology 2016; 86:1637-44. [DOI: 10.1016/j.theriogenology.2016.07.018] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 07/14/2016] [Accepted: 07/16/2016] [Indexed: 10/21/2022]
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Ortiz-Escribano N, Smits K, Piepers S, Van den Abbeel E, Woelders H, Van Soom A. Role of cumulus cells during vitrification and fertilization of mature bovine oocytes: Effects on survival, fertilization, and blastocyst development. Theriogenology 2016; 86:635-41. [DOI: 10.1016/j.theriogenology.2016.02.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/19/2016] [Accepted: 02/19/2016] [Indexed: 10/22/2022]
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Hochi S. Microtubule assembly crucial to bovine embryonic development in assisted reproductive technologies. Anim Sci J 2016; 87:1076-83. [PMID: 27169525 PMCID: PMC5084824 DOI: 10.1111/asj.12621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/05/2016] [Accepted: 01/25/2016] [Indexed: 11/30/2022]
Abstract
Centrosome integrity and microtubule network are crucial to the events around fertilization, including pronuclear development, migration and fusion, and the first mitotic division. The present review highlights the importance of bull spermatozoal centrosomes to function as a microtubule‐organizing center for successful fertilization and the subsequent embryonic development. Spermatozoal centrosomes need to be blended with ooplasmic pericentriolar materials accurately to nucleate and organize the sperm aster. Dysfunction of the spermatozoal centrosomes is associated with fertilization failure, which has been overcome with supplemental stimuli for oocyte activation following intracytoplasmic sperm injection in humans. Even though the spermatozoal centrosomes are functionally intact, abnormal sperm aster formation was frequently observed in vitrified‐warmed bovine oocytes, with delayed pronuclear development and migration. Treatment of the post‐warm oocytes with Rho‐associated coiled‐coil kinase inhibitor or α‐tocopherol inhibited the incidence of the abnormal aster formation, resulting in higher blastocyst yields following in vitro fertilization and culture. Thus, understanding of centrosomal function made it possible to improve the performance of advanced reproductive technologies.
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Affiliation(s)
- Shinichi Hochi
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
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37
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Punyawai K, Anakkul N, Srirattana K, Aikawa Y, Sangsritavong S, Nagai T, Imai K, Parnpai R. Comparison of Cryotop and micro volume air cooling methods for cryopreservation of bovine matured oocytes and blastocysts. J Reprod Dev 2015; 61:431-7. [PMID: 26119929 PMCID: PMC4623149 DOI: 10.1262/jrd.2014-163] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
This study was designed to compare the efficiency of the Cryotop method and that of two methods that employ a micro volume air cooling (MVAC) device by analyzing the survival and development of bovine oocytes and blastocysts vitrified using each method. In experiment I, in vitro-matured (IVM) oocytes were vitrified using an MVAC device without direct contact with liquid nitrogen (LN2; MVAC group) or directly plunged into LN2 (MVAC in LN2 group). A third group of IVM oocytes was vitrified using a Cryotop device (Cryotop group). After warming, vitrified oocytes were fertilized in vitro. There were no significant differences in cleavage and blastocyst formation rates among the three vitrified groups, with the rates ranging from 53.1% to 56.6% and 20.0% to 25.5%, respectively; however, the rates were significantly lower (P < 0.05) than those of the fresh control group (89.3% and 43.3%, respectively) and the
solution control group (87.3% and 42.0%, respectively). In experiment II, in vitro-produced (IVP) expanded blastocysts were vitrified using the MVAC, MVAC in LN2 and Cryotop methods, warmed and cultured for survival analysis and then compared with the solution control group. The rate of development of vitrified-warmed expanded blastocysts to the hatched blastocyst stage after 24 h of culture was lower in the MVAC in LN2 group than in the solution control group; however, after 48–72 h of culture, the rates did not significantly differ between the groups. These results indicate that the MVAC method without direct LN2 contact is as effective as the standard Cryotop method for vitrification of bovine IVM oocytes and IVP expanded blastocysts.
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Affiliation(s)
- Kanchana Punyawai
- Embryo Technology and Stem Cell Research Center and School of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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Overexpression of signal transducers and activators of transcription in embryos derived from vitrified oocytes negatively affect E-cadherin expression and embryo development. Cryobiology 2015; 70:239-45. [DOI: 10.1016/j.cryobiol.2015.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 12/24/2014] [Accepted: 03/09/2015] [Indexed: 01/07/2023]
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Park MJ, Lee SE, Kim EY, Lee JB, Jeong CJ, Park SP. Effective Oocyte Vitrification and Survival Techniques for Bovine Somatic Cell Nuclear Transfer. Cell Reprogram 2015; 17:199-210. [PMID: 25984830 DOI: 10.1089/cell.2014.0072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Bovine somatic cell nuclear transfer (SCNT) using vitrified-thawed (VT) oocytes has been studied; however, the cloning efficiency of these oocytes is not comparable with that of nonvitrified (non-V) fresh oocytes. This study sought to optimize the survival and cryopreservation of VT oocytes for SCNT. Co-culture with feeder cells that had been preincubated for 15 h significantly improved the survival of VT oocytes and their in vitro developmental potential following SCNT in comparison to co-culture with feeder cells that had been preincubated for 2, 5, or 24 h (p<0.05). Spindle assessment via the Oosight Microscopy Imaging System and microtubule staining revealed that vitrified metaphase II oocytes (VT group) were not suitable for SCNT. However, enucleating and/or activating oocytes prior to freezing enhanced their developmental potential and suitability for SCNT. The cloning efficiency of the enucleated-activated-vitrified-thawed (EAVT) group (21.6%) was better than that of the other vitrification groups [enucleated-vitrified-thawed (EVT) group, 13.7%; VT group, 15.0%; p<0.05] and was comparable with that of the non-V group (25.9%). The reactive oxygen species level was significantly lower in the EAVT group than in the other vitrification groups (p<0.05). mRNA levels of maternal genes (ZAR1, BMP15, and NLRP5) and a stress gene (HSF1) were lower in the vitrification groups than in the non-V group (p<0.05), whereas the level of phospho-p44/42 mitogen-activated protein kinase did not differ among the groups. Among the vitrification groups, blastocysts in the EAVT group had the best developmental potential, as judged by their high mRNA expression of developmental potential-related genes (POU5f1, Interferon-tau, and SLC2A5) and their low expression of proapoptotic (CASP3) and stress (Hsp70) genes. This study demonstrates that SCNT using bovine frozen-thawed oocytes can be successfully achieved using optimized vitrification and co-culture techniques.
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Affiliation(s)
- Min Jee Park
- 1 Mirae Cell Bio Inc., Seoul 143-854, Korea.,2 Jeju National University Stem Cell Research Center , Seoul 143-854, Korea.,3 Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University , Jeju 690-756, Korea.,5 These authors contributed equally to this work
| | - Seung Eun Lee
- 2 Jeju National University Stem Cell Research Center , Seoul 143-854, Korea.,3 Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University , Jeju 690-756, Korea.,5 These authors contributed equally to this work
| | - Eun Young Kim
- 1 Mirae Cell Bio Inc., Seoul 143-854, Korea.,2 Jeju National University Stem Cell Research Center , Seoul 143-854, Korea.,3 Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University , Jeju 690-756, Korea
| | - Jun Beom Lee
- 4 Shin Woman's Hospital , Uijeongbu 480-848, Korea
| | | | - Se Pill Park
- 1 Mirae Cell Bio Inc., Seoul 143-854, Korea.,2 Jeju National University Stem Cell Research Center , Seoul 143-854, Korea.,3 Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University , Jeju 690-756, Korea
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Glujovsky D, Riestra B, Sueldo C, Fiszbajn G, Repping S, Nodar F, Papier S, Ciapponi A. Vitrification versus slow freezing for women undergoing oocyte cryopreservation. Cochrane Database Syst Rev 2014; 2014:CD010047. [PMID: 25192224 PMCID: PMC11246547 DOI: 10.1002/14651858.cd010047.pub2] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Oocyte cryopreservation is a technique with considerable potential in reproductive medicine, including fertility preservation, as a way of delaying childbearing and as part of oocyte donation programs. Although the technique was relatively ineffective at first more recently numerous modifications have led to higher success rates. OBJECTIVES To compare the effectiveness and safety of vitrification and slow freezing as oocyte cryopreservation techniques for fertility outcomes in women undergoing assisted reproduction. SEARCH METHODS We searched electronic databases, trial registers and websites, including the Cochrane Menstrual Disorders and Subfertility Group Specialised Register of controlled trials, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE and PsycINFO (date of search 3 March 2014). SELECTION CRITERIA Two review authors independently selected randomised controlled trials (RCTs) comparing vitrification and slow freezing for oocyte preservation in women undergoing assisted reproduction. DATA COLLECTION AND ANALYSIS Two review authors independently extracted the data from eligible studies and assessed their risk of bias. Any disagreements were resolved by discussion or by a third review author. Data extracted included study characteristics and outcome data. The overall quality of the evidence was assessed using GRADE methods. MAIN RESULTS Two RCTs were included in the review (106 participants). Neither study reported live birth rate. Vitrification was associated with an increased clinical pregnancy rate compared to slow freezing (RR 3.86, 95% CI 1.63 to 9.11, P = 0.002, 2 RCTs, 106 women, I(2) = 8%, moderate quality evidence). The effect of vitrification compared to slow freezing on ongoing pregnancy rates was only reported in one small study, with inconclusive findings (RR 6.07, 95% CI 0.86 to 43.04, P = 0.07, one RCT, 28 women, low quality evidence).No data were reported on adverse effects, nor were any other outcomes reported in the included trials. The evidence was limited by imprecision. We assessed the included studies as at low to unclear risk of bias as the methods were not well described. AUTHORS' CONCLUSIONS Oocyte vitrification compared to slow freezing probably increases clinical pregnancy rates in women undergoing assisted reproduction. However, the total number of women and pregnancies were low and the imprecision is high which limits applicability. The effect on ongoing pregnancy is uncertain as data were sparse. No data were available on live births or adverse effects.
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Affiliation(s)
- Demián Glujovsky
- CEGYR (Centro de Estudios en Genética y Reproducción)Reproductive MedicineViamonte 1432,Buenos AiresArgentina
| | - Barbara Riestra
- CEGYR (Centro de Estudios en Ginecologia y Reproducción)Reproductive MedicineViamonte 1432Buenos AiresArgentina
| | - Carlos Sueldo
- CEGYR (Centro de Estudios en Ginecologia y Reproducción)Reproductive MedicineViamonte 1432Buenos AiresArgentina
| | - Gabriel Fiszbajn
- CEGYR (Centro de Estudios en Ginecologia y Reproducción)Reproductive MedicineViamonte 1432Buenos AiresArgentina
| | - Sjoerd Repping
- Academic Medical Center, University of AmsterdamCenter for Reproductive MedicineMeibergdreef 9 (A1‐230)AmsterdamNetherlands1105 AZ
| | - Florencia Nodar
- CEGYR Pro Development of Human ReproductionLaboratory of Assisted ReproductionViamonte 1438‐CP:C1055ABBBuenos AiresArgentina
| | - Sergio Papier
- CEGYR (Centro de Estudios en Ginecologia y Reproducción)Reproductive MedicineViamonte 1432Buenos AiresArgentina
| | - Agustín Ciapponi
- Southern American Branch of the Iberoamerican Cochrane CentreArgentine Cochrane Centre IECS, Institute for Clinical Effectiveness and Health Policy ‐ Hospital Italiano de Buenos AiresDr. Emilio Ravignani 2024Buenos AiresCapital FederalArgentinaC1414CPV ‐ C1181ACH
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Khalil W, Gabr SA, Shamiah SM, El-Haif A, Abdel-Khal A. In vitro Maturation, Fertilization and Embryo Development of Immature
Buffalo Oocytes Vitrified by Different Cryodevice Types. ACTA ACUST UNITED AC 2014. [DOI: 10.3923/ajava.2014.428.439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Curcio BR, Gastal MO, Pereira GR, Corcini CD, Landim-Alvarenga FC, Barros SS, Nogueira CE, Deschamps JC, Gastal EL. Ultrastructural Morphology and Nuclear Maturation Rates of Immature Equine Oocytes Vitrified with Different Solutions and Exposure Times. J Equine Vet Sci 2014. [DOI: 10.1016/j.jevs.2013.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Amoushahi M, Salehnia M, HosseinKhani S. The effect of vitrification and in vitro culture on the adenosine triphosphate content and mitochondrial distribution of mouse pre-implantation embryos. IRANIAN BIOMEDICAL JOURNAL 2014; 17:123-8. [PMID: 23748889 DOI: 10.6091/ibj.1199.2013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The mitochondria are an important source of adenosine triphosphate (ATP) production in pre-implantation embryo. Therefore, the objective of this study was to investigate the effect of vitrification and in vitro culture of mouse embryos on their mitochondrial distribution and ATP content. METHODS The embryos at 2-PN, 4-cell and blastocyst stages were collected from the oviduct of stimulated pregnant mice and uterine horns. Then, the embryos were vitrified with the cryotop method using ethylene glycol and dimethylsulphoxide. After evaluating the survival rates of vitrified embryos, their development to hatching stages were assessed. The ATP content of collected in vivo and in vitro embryos at different stages was measured by luciferin-luciferase bioluminescence assay. The distribution of mitochondria was studied using Mito-tracker green staining under a fluorescent microscope. RESULTS The survival rates of vitrified embryos at 2-PN, 4-cell and early blastocyst stages were 84.3, 87.87 and 89.89%, respectively. The hatching rates in previous developmental stages in vitrified group were 57.44, 66.73 and 70.89% and in non-vitrified group were 66.32, 73.25 and 75.89%, respectively (P>0.05). The ATP content of in vivo or in vitro collected embryos was not significantly different in both vitrified and non-vitrified groups (P>0.05). Mitochondrial distribution of vitrified and non-vitrified 2-PN embryos was similar, but some clampings or large aggregation of mitochondria within the vitrified 4-cell embryos was prominent. CONCLUSIONS Vitrification method did not affect the mouse embryo ATP content. Also, the cellular stress was not induced by this procedure and the safety of vitrification was shown.
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Affiliation(s)
- Mahboobeh Amoushahi
- Dept. of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mojdeh Salehnia
- Dept. of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Saman HosseinKhani
- Dept. of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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Effect of meiotic status, cumulus cells and cytoskeleton stabilizer on the developmental competence of ovine oocytes following vitrification. Small Rumin Res 2014. [DOI: 10.1016/j.smallrumres.2014.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Recent progress in cryopreservation of bovine oocytes. BIOMED RESEARCH INTERNATIONAL 2014; 2014:570647. [PMID: 24738063 PMCID: PMC3971499 DOI: 10.1155/2014/570647] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/20/2014] [Indexed: 12/18/2022]
Abstract
Principle of oocyte cryoinjury is first overviewed and then research history of cryopreservation using bovine oocytes is summarized for the last two decades with a few special references to recent progresses. Various types of cryodevices have been developed to accelerate the cooling rate and applied to the oocytes from large domestic species enriched with cytoplasmic lipid droplets. Two recent approaches include the qualitative improvement of IVM oocytes prior to the vitrification and the short-term recovery culture of vitrified-warmed oocytes prior to the subsequent IVF. Supplementation of L-carnitine to IVM medium of bovine oocytes has been reported to reduce the amount of cytoplasmic lipid droplets and improve the cryotolerance of the oocytes, but it is still controversial whether the positive effect of L-carnitine is reproducible. Incidence of multiple aster formation, a possible cause for low developmental potential of vitrified-warmed bovine oocytes, was inhibited by a short-term culture of the postwarm oocytes in the presence of Rho-associated coiled-coil kinase (ROCK) inhibitor. Use of an antioxidant α-tocopherol, instead of the ROCK inhibitor, also supported the revivability of the postwarm bovine oocytes. Further improvements of the vitrification procedure, combined with pre- and postvitrification chemical treatment, would overcome the high sensitivity of bovine oocytes to cryopreservation.
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Comparison of cytoskeletal integrity, fertilization and developmental competence of oocytes vitrified before or after in vitro maturation in a porcine model. Cryobiology 2013; 67:287-92. [PMID: 23993921 DOI: 10.1016/j.cryobiol.2013.08.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 08/09/2013] [Accepted: 08/13/2013] [Indexed: 11/23/2022]
Abstract
Aim of the study was to investigate the effect of vitrification on viability, cytoskeletal integrity and in vitro developmental competence after in vitro fertilization (IVF) of oocytes vitrified before or after in vitro maturation (IVM) using a pig model. Oocytes from abattoir-derived porcine ovaries were vitrified at either the germinal vesicle (GV) or metaphase II (MII) stage by modified solid surface vitrification (SSV). Oocyte viability was evaluated by stereomicroscopic observation whereas their nuclear stage and morphology of microtubules and F-actin were observed by confocal microscopy after immunostaining. Fertilization was assessed by orcein staining. The survival rate after vitrification was higher for MII-stage than for GV-stage oocytes. However, the ability of surviving oocytes to reach the MII stage after vitrification at the GV stage (GV-vitrified oocytes) was similar to that of control oocytes. Furthermore, after IVM, GV-vitrified oocytes had better spindle and F-actin integrity than oocytes vitrified at the MII stage (MII-vitrified oocytes). In accordance with this result, GV-vitrified oocytes had better ability to extrude the second polar body and support male pronucleus formation after in vitro fertilization (IVF), in comparison to MII-vitrified oocytes. Fertilization rates did not differ among groups. Finally, the ability of GV-vitrified oocytes to develop into embryos was superior to that of MII-vitrified oocytes. However, both vitrified groups showed reduced blastocyst development compared with the control group. In conclusion vitrification of porcine oocytes at the GV stage is advantageous in conferring better cytoskeletal organization and competence to develop to the blastocyst stage in comparison with vitrification at the MII stage.
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Srirattana K, Sripunya N, Sangmalee A, Imsoonthornruksa S, Liang Y, Ketudat-Cairns M, Parnpai R. Developmental potential of vitrified goat oocytes following somatic cell nuclear transfer and parthenogenetic activation. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The effect of vitrification on ultrastructure of human in vitro matured germinal vesicle oocytes. Eur J Obstet Gynecol Reprod Biol 2013; 167:69-75. [DOI: 10.1016/j.ejogrb.2012.11.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 09/15/2012] [Accepted: 11/22/2012] [Indexed: 11/18/2022]
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Song WY, Xin ZM, Jin HX, Peng ZF, Chen XM, Shi SL, Dai SJ, Sun YP. Effects of frozen timing on the spindle density, the angle between the polar body and spindle, and embryo development of intracytoplasmic sperm injection in mouse mature oocytes. Cell Biol Int 2013; 37:561-7. [PMID: 23404681 DOI: 10.1002/cbin.10073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 01/31/2013] [Indexed: 11/08/2022]
Abstract
Better pregnancy outcomes can be obtained by human mature oocyte vitrification, but many problems remain to be resolved in human mature oocyte vitrification. Since mature oocyte development possesses its own maturity cycle, there should be the optimal timing for mature oocyte vitrification. The purpose of this study was to observe the effects of frozen timing on the spindle density, the angle between the polar body and spindle, and embryo development of intracytoplasmic sperm injection (ICSI) in vitrified mouse mature oocytes and explore its possible mechanism. Mouse oocytes were randomly divided into three groups according to different frozen timing including Groups A, B, and C in which oocytes were vitrified within 2 h after ovum pick-up, and 3-4 and 5-6 h after ovum pick-up, respectively. Spindle-related parameters were measured, ICSI was performed. The spindle occurrence rate of vitrified-thawed oocytes was 98.4% in Group A, 82.3% in Group B, and 75.8% in Group C, without statistical differences between pre-vitrification and post-thawing and among the three groups (P > 0.05). The angles between the polar body and spindle were larger after thawing than before vitrification (P < 0.01). The spindle retardance values were lower after thawing than before vitrification in Groups B and C (P < 0.05), but higher in Group A (P < 0.05). The spindle retardance values before vitrification were higher in Group B than in Groups A and C (P < 0.05), but the spindle retardance value, oocyte survival and two-cell rate after thawing were higher in Group A than in Groups B and C (P < 0.05). There were no statistical differences in ICSI fertility rate between the three groups (P > 0.05). The damage on the spindle is the slightest and embryo quality is the highest in the mouse oocytes vitrified within 2 h after ovum pick-up. The spindle retardance value is more valuable than the spindle occurrence rate in the evaluation of vitrified-thawed oocyte quality, and is positively correlated with embryo quality.
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Affiliation(s)
- Wen-yan Song
- Reproductive Medical Center of the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Seet VYK, Al-Samerria S, Wong J, Stanger J, Yovich JL, Almahbobi G. Optimising vitrification of human oocytes using multiple cryoprotectants and morphological and functional assessment. Reprod Fertil Dev 2013; 25:918-26. [DOI: 10.1071/rd12136] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 08/01/2012] [Indexed: 11/23/2022] Open
Abstract
Oocyte vitrification is a clinical practice that allows preservation of fertility potential in women. Vitrification involves quick cooling using high concentrations of cryoprotectants to minimise freezing injuries. However, high concentrations of cryoprotectants have detrimental effects on oocyte quality and eventually the offspring. In addition, current assessment of oocyte quality after vitrification is commonly based only on the morphological appearance of the oocyte, raising concerns regarding its efficiency. Using both morphological and functional assessments, the present study investigated whether combinations of cryoprotectants at lower individual concentrations result in better cryosurvival rates than single cryoprotectants at higher concentrations. Surplus oocytes from IVF patients were vitrified within 24 h after retrieval using the Cryotop method with several cryoprotectants, either individually or in combination. The morphological and functional quality of the vitrified oocytes was investigated using light microscopy and computer-based quantification of mitochondrial integrity, respectively. Oocyte quality was significantly higher using a combination of cryoprotectants than vitrification with individual cryoprotectants. In addition, the quality of vitrified oocyte varied depending on the cryoprotectants and type of combination used. The results of the present study indicate that observations based purely on the morphological appearance of the oocyte to assess the cryosurvival rate are insufficient and sometimes misleading. The outcome will have a significant implication in the area of human oocyte cryopreservation as an important approach for fertility preservation.
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