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Hillyear LM, Zak LJ, Beckitt T, Griffin DK, Harvey SC, Harvey KE. Morphokinetic Profiling Suggests That Rapid First Cleavage Division Accurately Predicts the Chances of Blastulation in Pig In Vitro Produced Embryos. Animals (Basel) 2024; 14:783. [PMID: 38473168 DOI: 10.3390/ani14050783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
The study of pig preimplantation embryo development has several potential uses: from agriculture to the production of medically relevant genetically modified organisms and from rare breed conservation to acting as a physiologically relevant model for progressing human and other (e.g., endangered) species' in vitro fertilisation technology. Despite this, barriers to the widespread adoption of pig embryo in vitro production include lipid-laden cells that are hard to visualise, slow adoption of contemporary technologies such as the use of time-lapse incubators or artificial intelligence, poor blastulation and high polyspermy rates. Here, we employ a commercially available time-lapse incubator to provide a comprehensive overview of the morphokinetics of pig preimplantation development for the first time. We tested the hypotheses that (a) there are differences in developmental timings between blastulating and non-blastulating embryos and (b) embryo developmental morphokinetic features can be used to predict the likelihood of blastulation. The abattoir-derived oocytes fertilised by commercial extended semen produced presumptive zygotes were split into two groups: cavitating/blastulating 144 h post gamete co-incubation and those that were not. The blastulating group reached the 2-cell and morula stages significantly earlier, and the time taken to reach the 2-cell stage was identified to be a predictive marker for blastocyst formation. Reverse cleavage was also associated with poor blastulation. These data demonstrate the potential of morphokinetic analysis in automating and upscaling pig in vitro production through effective embryo selection.
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Affiliation(s)
- Lucy M Hillyear
- School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury CT1 1QU, UK
| | - Louisa J Zak
- Topigs Norsvin Research Center, Meerendonkweg 25, 5216 TZ Den Bosch, The Netherlands
| | | | - Darren K Griffin
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
| | - Simon C Harvey
- Faculty of Engineering and Science, University of Greenwich, Medway ME4 4TB, UK
| | - Katie E Harvey
- School of Life, Health and Chemical Sciences, The Open University, Milton Keynes MK7 6AA, UK
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2
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Zhu F, Lu X, Jiang Y, Wang D, Pan L, Jia C, Zhang L, Xie Y, Zhao M, Liu H, Wang M, Wang T, Liu H, Li J. Proteomics reveals the underlying mechanism by which the first uneven division affects embryonic development in pig. Theriogenology 2023; 210:42-52. [PMID: 37473595 DOI: 10.1016/j.theriogenology.2023.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023]
Abstract
One of the most typical abnormal cleavage patterns during early embryonic development is uneven division, but the first uneven division of pig zygote is common. Uneven division results in different daughter cell sizes and an uneven distribution of organelles such as lipid droplet, mitochondria, but the developmental capacity of daughter cells and proteomic changes of daughter cells are still unclear. Therefore, the developmental ability and proteomic quantification were investigated on blastomeres from even division (ED) or uneven division (UD) embryos at 2-cell stage in the present study. Firstly, the developmental ability was affected by the blastomeric size, when compared with medium blastomeres (MBs), the large blastomeres (LBs) with the higher cleavage rate but the small blastomeres (SBs) with the lower rate was observed. Subsequently, proteomic analysis was performed on blastomeres of LBs, MBs and SBs, a total of 109 DEPs were detected, which were involved in protein metabolism and processing, energy metabolism and ribosome. In particular, DEPs in LBs vs. SBs were focused on RNA binding and actin cytoskeletal tissue. Two protein-dense networks associated with RNA binding and cytoskeleton were revealed by further protein-protein interaction (PPI) analysis of DEPs in LBs vs. SBs, that DDX1 related to RNA binding and ACTB related to cytoskeleton were confirmed in UD embryos. Therefore, a briefly information of DEPs in blastomeres of 2-cell stage pig embryos was described in the present study, and it further confirmed that the formation of uneven division of the first cell cycle of pig embryos might be controlled by the cytoskeleton; the developmental capacity of daughter cells might be affected by the energy metabolism, RNA binding and ribosome, and further account for the developmental potential of the whole embryo.
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Affiliation(s)
- Fuquan Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Xinyue Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Yuan Jiang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Dayu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Linqing Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Chao Jia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Lin Zhang
- Jiangsu Yangyu Ecological Agriculture Co., Ltd, Taixing, 225400, China
| | - Yan Xie
- Taixing Animal Husbandry and Veterinary Center, Taixing, 225400, China
| | - Mingyue Zhao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Huijun Liu
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Meixia Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Honglin Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Juan Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China.
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Huayhua C, Rodríguez M, Vega J, Briones M, Rodriguez-Alvarez L, Mellisho E. Blastulation time measured with time-lapse system can predict in vitro viability of bovine blastocysts. PLoS One 2023; 18:e0289751. [PMID: 37561791 PMCID: PMC10414680 DOI: 10.1371/journal.pone.0289751] [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: 02/07/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023] Open
Abstract
The objective of this study was to evaluate the time of blastulation monitored by time-lapse technology to predict in vitro viability of bovine blastocysts. This technology can be a powerful tool for bovine embryos selection with higher implantation capacity and competence. Also, in humans an early blastulation is associated with higher quality and pregnancy rate. Cumulus oocyte complexes (COCs) were matured for 20 to 22 h and then fertilized by co-incubation of COCs and spermatozoa (10,000 sperm per oocyte) for 18 h. Presumptive zygotes were placed individually in microwells, in droplets of commercial culture medium. The Primo Vision TL system (EVO+; Vitrolife) captured digital images of developing embryos every 15 minutes. The time frame from IVF to the start of blastulation (tSB) and to blastocyst development (tB) was recorded. After day 7.5, the blastocysts were in vitro culture for 48 h until day 9.5 after IVF to evaluate post hatching development. In vitro viability was evaluated at day 9.5: those with a diameter greater than 200 μm and a total cell count greater than 180 were classified as viable (value 1), while the rest were classified as non in vitro viable (value 0). The area under the ROC curve (AUC) was estimated to determine the predictive power of in vitro viability through blastulation time. In addition, binary logistic regression analysis was used to generate a mathematical model with morphokinetic variables that allow the best prediction of in vitro viability. In 13 sessions, the blastocyst production rate was 46.2% (96/208). The cut-off time to discriminate early or late blastulation was 149.8 h. The post-hatching development of the embryos with early blastulation was 63.3% (31/49), being statistically superior (p = 0.001) than the late blastulation group 14.9% (7/47). Likewise, the time of blastulation showed an accuracy of 90.8% (p < 0.001) in predicting in vitro viability of bovine blastocysts. In conclusion, the selection of blastocysts based on blastulation time (< 155 h) and blastocyst diameter measured on day 7.5 after IVF (> 180 μm) maximizes the in vitro viability.
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Affiliation(s)
- Carmen Huayhua
- Centro de Investigación en Tecnología de Embriones (CIETE), Animal Improvement Program, Universidad Nacional Agraria La Molina, Lima, Perú
| | - Misael Rodríguez
- Centro de Investigación en Tecnología de Embriones (CIETE), Animal Improvement Program, Universidad Nacional Agraria La Molina, Lima, Perú
| | - Jhorjhi Vega
- Centro de Investigación en Tecnología de Embriones (CIETE), Animal Improvement Program, Universidad Nacional Agraria La Molina, Lima, Perú
| | - Mario Briones
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Concepción, Chile
| | - Lleretny Rodriguez-Alvarez
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Concepción, Chile
| | - Edwin Mellisho
- Centro de Investigación en Tecnología de Embriones (CIETE), Animal Improvement Program, Universidad Nacional Agraria La Molina, Lima, Perú
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Angel-Velez D, De Coster T, Azari-Dolatabad N, Fernández-Montoro A, Benedetti C, Pavani K, Van Soom A, Bogado Pascottini O, Smits K. Embryo morphokinetics derived from fresh and vitrified bovine oocytes predict blastocyst development and nuclear abnormalities. Sci Rep 2023; 13:4765. [PMID: 36959320 PMCID: PMC10036495 DOI: 10.1038/s41598-023-31268-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
Embryo development is a dynamic process and critical stages may go unnoticed with the use of traditional morphologic assessments, especially the timing of embryonic divisions and aberrant zygotic cleavage patterns. Bovine embryo development is impaired after oocyte vitrification, but little is known about the underlying morphokinetic behavior. Here, bovine zygotes from fresh (n = 708) and vitrified oocytes (n = 182) were monitored by time-lapse imaging and the timing and nature of early blastomere divisions were modeled to find associations with blastocyst development at day 8. The predictive potential of morphokinetic parameters was analyzed by logistic regression and receiver operating characteristic curve analysis to determine optimal cut-off values. Lag-phase was highly correlated with embryo development. Remarkably, 100% of zygotes that reached the blastocyst stage showed a lag-phase. Fast first cleavage increased the chance of blastocyst development to 30% with a cut-off of 32 h and 22 min. Aberrant zygotic cleavage events, including multipolar division, unequal blastomere sizes, and membrane ruffling resulted in decreased blastocyst development. Multipolar division leads to uneven blastomeres, which was associated with anuclear and multinuclear blastomeres, indicating genome segregation errors. Moreover, we described for the first time morphokinetics of embryos derived from vitrified bovine oocytes. Vitrification severely affected blastocyst development, although lower cryoprotectant concentration in equilibration solutions seems to be less detrimental for embryo yield. Impaired development was linked to slow cleavages, lower lag-phase incidence, and increased early embryonic arrest. Typically, less than 15% of the embryos produced from vitrified oocytes reached more than eight cells. Interestingly, the rate of abnormal first cleavage events was not affected by oocyte vitrification. In conclusion, time to first cleavage, the presence of a lag-phase, and the absence of aberrant zygotic cleavage were the best predictors of bovine blastocyst development for both fresh and vitrified oocytes.
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Affiliation(s)
- Daniel Angel-Velez
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium.
- Research Group in Animal Sciences - INCA-CES, Universidad CES, Medellin, Colombia.
| | - Tine De Coster
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Nima Azari-Dolatabad
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Andrea Fernández-Montoro
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Camilla Benedetti
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Krishna Pavani
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
- Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Gent, Belgium
| | - Ann Van Soom
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Osvaldo Bogado Pascottini
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Katrien Smits
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
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Tao R, Bi J, Zhu F, Wang X, Jia C, Xu H, He X, Li J. Division Behaviors and Their Effects on Preimplantation Development of Pig Embryos. Reprod Domest Anim 2022; 57:1016-1028. [PMID: 35662274 DOI: 10.1111/rda.14168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/10/2022] [Accepted: 05/28/2022] [Indexed: 11/27/2022]
Abstract
Quality of preimplantation embryos could affect development efficiency after embryo transfer. However, assessment of preimplantation embryos was unsatisfied especially in pig embryos to date. Therefore, the present study was design to investigate available and applicable parameters which indicating development potential and quality of porcine preimplantation embryos produced by handmade cloning (HMC), parthenogenetic activation without zona pellucida (PAZF) and with zona pellucida (PAZI). Results firstly detected a common division behavior that formation of uneven division with two unequal size blastomeres (UD 2-cell), especially in HMC embryos, the proportion of UD 2-cell was significantly higher than that of equal size blastomeres (ED 2-cell) with 72.56 ± 4.56 vs. 24.57 ± 1.92. Formation of UD 2-cell might due to spindle migrates along the long axis in 1-cell stage, and the cleavage furrow not formed in the center of cytoplasm. In the two sister blastomeres of UD 2-cell, unevenly distribution of organelles (mitochondria and lipid droplet) was observed with lower proportion in the smaller one (p<0.05). Althoug no difference of blastocyst rate was observed between UD and ED 2-cell embryos, the cell number per blastocyst from UD 2-cell embryos was lower than that from ED 2-cell embryos (44.15 ± 2.05 vs. 51.55 ± 1.83). Besides, because of nonsynchronized division of each blastomeres, another common behavior that three cleavage routes were observed in all of HMC/PAZF/PAZI embryos that T1 (2-cell → 3-cell → 4-cell → ≥ 5-cell → morula → blastocyst), T2 (2-cell → 3-cell → 4-cell → morula → blastocyst), and T3 (2-cell → 3-cell / 4-cell → morula → blastocyst). Therefore, in pig in vitro produced embryos, division behaviors of uneven volume of cytoplasm and nonsynchronized cell cycles were observed at the early embryonic developmental stage, which might be another potential factor to evaluate embryonic development.
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Affiliation(s)
- Ruixin Tao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jiaying Bi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Fuquan Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xuguang Wang
- College of Animal Science and Technology, Xinjiang Agricultural University, Urimuqi, China
| | - Chao Jia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Hongxia Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xu He
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Juan Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Zhang XD, Zhang Q, Han W, Liu WW, Shen XL, Yao GD, Shi SL, Hu LL, Wang SS, Wang JX, Zhou JJ, Kang WW, De Zhang H, Luo C, Yu Q, Liu RZ, Sun YP, Sun HX, Wang XH, Quan S, Huang GN. Comparison of embryo implantation potential between time-lapse incubators and standard incubators: A randomized controlled study. Reprod Biomed Online 2022; 45:858-866. [DOI: 10.1016/j.rbmo.2022.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/09/2022] [Accepted: 06/20/2022] [Indexed: 11/29/2022]
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Fryc K, Nowak A, Kij-Mitka B, Kochan J, Murawski M, Pena S, Bartlewski PM. Relationships of morphological and phototextural attributes of presumptive ovine zygotes and early embryos to their developmental competence in vitro: a preliminary assessment using time-lapse imaging. Anim Reprod 2022; 19:e20220009. [PMID: 35432605 PMCID: PMC9007056 DOI: 10.1590/1984-3143-ar2022-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/08/2022] [Indexed: 11/21/2022] Open
Abstract
The assessment of morphology and digital image opacity may provide valuable information on the present embryo quality. Time-lapse imaging has been employed in research to establish a means of monitoring the dynamic nature of preimplantation embryo development. The aim of present study was to use time-lapse imaging for assessing various prospective morphometric and phototextural markers of the developmental potential of in vitro-derived ovine embryos. Oocytes were obtained by scarification of ovaries from nine Polish Longwool ewes. After in vitro maturation (IVM) and fertilization (IVF) of oocytes with fresh ram semen, the development of embryos to the blastocyst stage was monitored and evaluated using Primo Vision time-lapse imaging technology. Commercially available Image-Pro® Plus software was used to measure zona pellucida thickness, embryo diameter, total area of the perivitelline space, cellular grey-scale pixel intensity and cellular pixel heterogeneity. Statistical assessment of all attributes was done at various time points during embryo development (i.e., presumptive zygote stage: t(0); first cleavage detected at t(2) or t(3); and second cleavage detected at t(4) or t(6)). Out of thirty-seven zygotes analyzed in this study, five did not divide, 26 arrested before and six developed to the blastocyst stage. Our present results indicate that most parameters analyzed did not differ among embryos varying in their developmental fate except for the perivitelline space area that was greater (P<0.05) for non-dividing zygotes than future blastocysts at the presumptive zygote stage (4040±1850 vs. 857±262 µm2, respectively; means±SEM). Consequently, the measurement of perivitelline space at t(0) can potentially be used to prognosticate developmental potential of in vitro-produced ovine embryos albeit further confirmational studies are needed.
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Martino NA, Marzano G, Mastrorocco A, Lacalandra GM, Vincenti L, Hinrichs K, Dell Aquila ME. Use of time-lapse imaging to evaluate morphokinetics of in vitro equine blastocyst development after oocyte holding for two days at 15°C versus room temperature before intracytoplasmic sperm injection. Reprod Fertil Dev 2020; 31:1862-1873. [PMID: 31708015 DOI: 10.1071/rd19223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/17/2019] [Indexed: 01/25/2023] Open
Abstract
Time-lapse imaging was used to establish the morphokinetics of equine embryo development to the blastocyst stage after invitro oocyte maturation (IVM), intracytoplasmic sperm injection (ICSI) and embryo culture, in oocytes held overnight at room temperature (22-27°C; standard conditions) before IVM. Embryos that developed to the blastocyst stage underwent precleavage cytoplasmic extrusion and cleavage to the 2-, 3- and 4-cell stages significantly earlier than did embryos that arrested in development. We then determined the rate of blastocyst formation after ICSI in oocytes held for 2 days at either 15°C or room temperature before IVM (15-2d and RT-2d treatment groups respectively). The blastocyst development rate was significantly higher in the 15-2d than in the RT-2d group (13% vs 0% respectively). The failure of blastocyst development in the RT-2d group precluded comparison of morphokinetics of blastocyst development between treatments. In any condition examined, development to the blastocyst stage was characterised by earlier cytoplasmic extrusion before cleavage, earlier cleavage to 2- and 4-cell stages and reduced duration at the 2-cell stage compared with non-competent embryos. In conclusion, this study presents morphokinetic parameters predictive of embryo development invitro to the blastocyst stage after ICSI in the horse. We conclude that time-lapse imaging allows increased precision for evaluating effects of different treatments on equine embryo development.
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Affiliation(s)
- N A Martino
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy; and Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095, Grugliasco, Italy; and Corresponding author.
| | - G Marzano
- Department of Mathematics and Physics Ennio de Giorgi, University of Salento, Via per Arnesano, 73100, Lecce, Italy; and Institute of Nanotechnology, CNR Nanotec, Via per Monteroni, 73100, Lecce, Italy
| | - A Mastrorocco
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
| | - G M Lacalandra
- Department of Veterinary Medicine, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
| | - L Vincenti
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095, Grugliasco, Italy
| | - K Hinrichs
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA
| | - M E Dell Aquila
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
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Tam Le M, Van Nguyen T, Thanh Nguyen T, Thanh Thi Nguyen T, An Thi Nguyen T, Huy Vu Nguyen Q, Thanh Cao N. Does polycystic ovary syndrome affect morphokinetics or abnormalities in early embryonic development? Eur J Obstet Gynecol Reprod Biol X 2019; 3:100045. [PMID: 31403129 PMCID: PMC6687388 DOI: 10.1016/j.eurox.2019.100045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 05/01/2019] [Accepted: 05/10/2019] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES This study aimed to investigate whether oocyte retrieval from PCOS patients affects the morphokinetics or the incidence of abnormalities in early embryonic development, using time-lapse imaging analysis. METHODS This was a prospective study in total of 39 PCOS patients and 67 women with normal ovarian function, underwent a GnRH antagonist protocol of controlled ovarian stimulation and fertilization by ICSI. 402 zygotes from the PCOS group and 449 zygotes from the control group were observed by time-lapse monitoring for 48 h following sperm injection. RESULTS Patients with PCOS showed a significantly higher number of retrieved oocytes, and a significantly higher number of metaphase II oocytes per cycle than that of the non-PCOS group (18.85 ± 9.41 vs. 11.48 ± 5.51 and 14.97 ± 7.43 vs. 9.51 ± 4.7, respectively). However, oocyte maturation rate and morphologically assessed embryo quality did not differ between two groups. After 48 h of the embryo culture using time-lapse video recording, most of the embryos in both groups had reached the 4-cell stage (353/449 vs. 314/402 embryos). There were no significant differences between the control and PCOS group regarding the time-points of the successive events in early embryonic development from the appearance of 2 polar bodies to the 6-cell stage. However, the percentage of t2 stages which fell in "optimal range" (>24 h and ≤28 h) was significantly lower in the PCOS group than in the control group (37.8% vs. 48.1%, P = 0.004). The proportion of embryos manifesting abnormal fertility, multinucleation, direct cleavage and reverse cleavage were not significantly different between the two groups. CONCLUSION Our data indicated that PCOS does not affect the morphokinetics or incidence of abnormalities in early embryonic development.
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Affiliation(s)
- Minh Tam Le
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
- Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Trung Van Nguyen
- Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Tung Thanh Nguyen
- Department of Histology and Embryology, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Thai Thanh Thi Nguyen
- Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Tam An Thi Nguyen
- Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Quoc Huy Vu Nguyen
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Ngoc Thanh Cao
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
- Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
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10
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Romar R, Cánovas S, Matás C, Gadea J, Coy P. Pig in vitro fertilization: Where are we and where do we go? Theriogenology 2019; 137:113-121. [PMID: 31182223 DOI: 10.1016/j.theriogenology.2019.05.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The pig is an important livestock animal. Biotechnological interest in this species has increased due to its use, among others, in the generation of transgenic animals for use in biomedicine based on its greater physiological proximity to the human species than other large domestic animals. This development has paralleled an improvement in Assisted Reproduction Techniques (ART) used for this species. However, the ability to generate animals from embryos produced entirely in vitro is still limited and a wide margin for improvement remains. Here we review the procedures, additives, and devices used during pig in vitro fertilization (IVF), focusing on the main points of each step that have offered the best results in terms of increased efficiency of the system. The lack of standardized protocols and consensus on the parameters to be assessed makes it difficult to compare results across different studies, but some conclusions are drawn from the literature. We anticipate that new physiological protocols will advance the field of swine IVF, including induction of prefertilization ZP hardening with oviductal fluid, sperm preparation by swim-up method, increased viscosity through the addition of inert molecules or reproductive biofluids, and the incorporation of 3D devices. Here we also reflect on the need to expand the variables on which the efficiency of pig IVF is based, providing new parameters that should be considered to supply more objective and quantitative assessment of IVF additives and protocols.
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Affiliation(s)
- Raquel Romar
- Department of Physiology, Faculty of Veterinary, University of Murcia, Campus Mare Nostrum, IMIB-Arrixaca, Murcia, Spain.
| | - Sebastián Cánovas
- Department of Physiology, Faculty of Veterinary, University of Murcia, Campus Mare Nostrum, IMIB-Arrixaca, Murcia, Spain
| | - Carmen Matás
- Department of Physiology, Faculty of Veterinary, University of Murcia, Campus Mare Nostrum, IMIB-Arrixaca, Murcia, Spain
| | - Joaquín Gadea
- Department of Physiology, Faculty of Veterinary, University of Murcia, Campus Mare Nostrum, IMIB-Arrixaca, Murcia, Spain
| | - Pilar Coy
- Department of Physiology, Faculty of Veterinary, University of Murcia, Campus Mare Nostrum, IMIB-Arrixaca, Murcia, Spain
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11
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Magata F, Ideta A, Okubo H, Matsuda F, Urakawa M, Oono Y. Growth potential of bovine embryos presenting abnormal cleavage observed through time lapse cinematography. Theriogenology 2019; 133:119-124. [PMID: 31085381 DOI: 10.1016/j.theriogenology.2019.04.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/01/2019] [Accepted: 04/26/2019] [Indexed: 12/01/2022]
Abstract
Time-lapse monitoring (TLM) has emerged as a novel technology for the continuous and noninvasive evaluation of embryos. TLM has revealed the prevalence of specific dysmorphisms such as abnormal development during the early-cleavage stage of embryos. However, little information is available on the prevalence and consequences of abnormal cleavage in bovine embryos. Hence, this study aimed to investigate growth potential of bovine embryos presenting abnormal cleavage, such as reverse cleavage (RC), direct cleavage (DC), and irregular and unsmooth ruffling of the oolema membrane (ruffling). Bovine embryos derived through in vitro fertilization (IVF) were cultured in the microwell culture dishes, and the kinetics of in vitro development were observed through TLM at 20-min intervals for 10 d. Approximately 36% of embryos that developed into a blastocyst presented abnormal cleavage. Morphokinetic evaluations revealed that RC, DC, and ruffling embryos showed slower development compared to embryos with normal cleavage (P < 0.01). Embryos with RC and DC, but not ruffling, revealed impaired hatchability (P < 0.05) with increased collapses of the blastocyst cavity until hatching (P < 0.0001). Moreover, the RC and DC embryos presented increased chromosomal aneuploidy (P < 0.05). These results suggest a compromised viability of embryos with RC and DC. This is the first report that clarified the effect of abnormal cleavage on the morphokinetics and growth potential of bovine IVF embryos. Results indicate that the kinetic evaluation of bovine embryos using the time-lapse imaging system will be beneficial for selecting embryos with a high viability.
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Affiliation(s)
- F Magata
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan; Department of Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
| | - A Ideta
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
| | - H Okubo
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
| | - F Matsuda
- Department of Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - M Urakawa
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
| | - Y Oono
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
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12
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Marzano G, Mastrorocco A, Zianni R, Mangiacotti M, Chiaravalle AE, Lacalandra GM, Minervini F, Cardinali A, Macciocca M, Vicenti R, Fabbri R, Hinrichs K, Dell'Aquila ME, Martino NA. Altered morphokinetics in equine embryos from oocytes exposed to DEHP during IVM. Mol Reprod Dev 2019; 86:1388-1404. [PMID: 31025442 DOI: 10.1002/mrd.23156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/12/2019] [Accepted: 04/04/2019] [Indexed: 02/01/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is a commonly used plasticizer with endocrine-disrupting properties. In this study, we used an equine model to investigate DEHP concentrations in ovarian follicular fluid (FF), and to determine the effects of exposure of oocytes to potentially toxic concentrations of DEHP during in vitro maturation (IVM) on embryo development and quality. Embryo development was evaluated using time-lapse monitoring (TLM), a photomicroscopic tool that reveals abnormalities in cleavage kinetics unobservable by conventional morphology assessment. Blastocyst bioenergetic/oxidative status was assessed by confocal analysis. The possibility that verbascoside (VB), a bioactive polyphenol with antioxidant activity, could counteract DEHP-induced oocyte oxidative damage, was investigated. DEHP was detected in FF and in IVM media at concentrations up to 60 nM. Culture of oocytes in the presence of 500 nM DEHP delayed second polar body extrusion, reduced duration of the second cell cycle, and increased the percentage of embryos showing abrupt multiple cleavage, compared with controls. Mitochondrial activity and intracellular levels of reactive oxygen species were reduced in blastocysts from DEHP-exposed oocytes. VB addition during IVM limited DEHP-induced blastocyst damage. In conclusion, DEHP is detectable in equine FF and culture medium, and oocyte exposure to increased concentrations of DEHP during IVM affects preimplantation embryo development. Moreover, TLM, reported for the first time in the horse in this study, is an efficient tool for identifying altered morphokinetic parameters and cleavage abnormalities associated with exposure to toxic compounds.
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Affiliation(s)
- Giuseppina Marzano
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Valenzano, Bari, Italy
| | - Antonella Mastrorocco
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Valenzano, Bari, Italy
| | - Rosalia Zianni
- Istituto Zooprofilattico Sperimentale di Puglia e Basilicata, Foggia, Italy
| | | | | | | | - Fiorenza Minervini
- Institute of Sciences of Food Production (ISPA), National Research Council of Italy (CNR), Bari, Italy
| | - Angela Cardinali
- Institute of Sciences of Food Production (ISPA), National Research Council of Italy (CNR), Bari, Italy
| | - Maria Macciocca
- Department of Medical and Surgical Sciences, Gynecology and Physiopathology of Human Reproductive Unit, Sant'Orsola-Malpighi Hospital, University of Bologna,, Bologna, Italy
| | - Rossella Vicenti
- Department of Medical and Surgical Sciences, Gynecology and Physiopathology of Human Reproductive Unit, Sant'Orsola-Malpighi Hospital, University of Bologna,, Bologna, Italy
| | - Raffaella Fabbri
- Department of Medical and Surgical Sciences, Gynecology and Physiopathology of Human Reproductive Unit, Sant'Orsola-Malpighi Hospital, University of Bologna,, Bologna, Italy
| | - Katrin Hinrichs
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine & Biomedical Science, Texas A&M University, College Station, TX
| | - Maria E Dell'Aquila
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Valenzano, Bari, Italy
| | - Nicola A Martino
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Valenzano, Bari, Italy.,Istituto Zooprofilattico Sperimentale di Puglia e Basilicata, Foggia, Italy.,Department of Veterinary Science, University of Turin, Grugliasco, Italy
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13
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Fowler KE, Mandawala AA, Griffin DK, Walling GA, Harvey SC. The production of pig preimplantation embryos in vitro: Current progress and future prospects. Reprod Biol 2018; 18:203-211. [DOI: 10.1016/j.repbio.2018.07.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/26/2018] [Accepted: 07/01/2018] [Indexed: 02/07/2023]
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14
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Biobanking of different body fluids within the frame of IVF-a standard operating procedure to improve reproductive biology research. J Assist Reprod Genet 2016; 34:283-290. [PMID: 27889868 PMCID: PMC5306411 DOI: 10.1007/s10815-016-0847-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 11/15/2016] [Indexed: 11/16/2022] Open
Abstract
Purpose The aim of the present study was to develop a standard operating procedure (SOP) for the collection, transport, and storage of human cumulus cells, follicular fluid, blood serum, seminal plasma, embryo culture supernatant, and embryo culture supernatant control obtained within the IVF process under approved protocols and written informed consent from participating patients. The SOP was developed at the Kinderwunsch Institut Schenk, Dobl, Austria, together with Biobank Graz of the Medical University of Graz, Austria. Methods The SOP provides comprehensive details of laboratory procedures and sampling of the different fluids within the IVF process. Furthermore, information on sample coding, references of involved laboratory techniques (e.g., oocyte retrieval with a Steiner-TAN needle), ethical approvals, and biobanking procedures are presented. Results The result of the present study is a standard operating procedure. Conclusions The SOP ensures a professional way for collection and scientific use of IVF samples by the Kinderwunsch Institut Schenk, Dobl, Austria, and Biobank Graz of the Medical University of Graz, Austria. It can be used as a template for other institutions to unify specimen collection procedures in the field of reproductive health research.
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