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Yousefi M, Narchi M, Sharafi M, Borghei-Rad SM, Shahverdi A, Masoudi R. Rooster frozen-thawed semen quality following sublethal xanthine oxidase treatments. Anim Reprod Sci 2021; 235:106883. [PMID: 34768036 DOI: 10.1016/j.anireprosci.2021.106883] [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: 02/26/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 10/19/2022]
Abstract
Reactive oxygen species are associated with cryodamage and may be a factor causing or exacerbating cellular cryodamage during freezing and thawing processes. Induction of sublethal oxidative stress as a new approach for preconditioning of sperm improves the cryo-resistance of sperm. The aim of this study was to investigate effects of sublethal concentrations of xanthine oxidase (XO), which induces oxidative stress before cryopreservation on values for semen quality variables of rooster sperm post-thawing. Semen samples were collected from 15 roosters and treated with different concentrations of XO [XO-0, XO-0.005, XO-0.05, XO-0.5, XO-5, and XO-50 U/ml]; then, the effects of treatments with XO as sublethal stressors, were examined. Results indicated the XO-0.5 and XO-5 treatments resulted in a greater percentage of sperm total motility, progressive motility, viability, and membrane functionality compared to other groups. There was no difference after treatments with XO-0, XO-0.005, and XO-0.05 on sperm total motility, membrane functionality, apoptosis, mitochondria activity, and viability. There was a greater percentage of mitochondria activity in sperm of the XO-0.05, XO-0.5, and XO-5 groups. Furthermore, there was the greatest concentration of malondialdehyde (MDA) in samples of the XO-50 group. Values for sperm abnormal morphology, acrosome integrity, and DNA fragmentation were not different among samples post-thawing. Sperm treated with XO-0.5 and XO-5 had a greater fertilization capacity than those of the control group. In conclusion, treatment of sperm with 0.5 and 5 U/ml XO as inducers of mild oxidative stress before cryopreservation, improved several function quality indices of sperm post-thawing.
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Affiliation(s)
- M Yousefi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - M Narchi
- Faculty of Veterinay, Islamic Azad University, Karaj Branch, Karaj, Iran
| | - M Sharafi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
| | - S M Borghei-Rad
- Department of Embryology at Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - A Shahverdi
- Department of Embryology at Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - R Masoudi
- Animal Science Research Institute of Iran (ASRI), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.
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Application of High Hydrostatic Pressure (HHP) to Improve Cryopreservation of Young Bull Semen. ANNALS OF ANIMAL SCIENCE 2021. [DOI: 10.2478/aoas-2021-0059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Abstract
The objective of the study was to determine the effect of high hydrostatic pressure (HHP) on quality of cryopreserved semen of young bulls. Semen for this study was collected from 8 bulls aged between 13 and 18 months at monthly intervals, from June to September. After collection, semen was diluted in a commercial Bioxcell® extender (one part at 1:1 and a second part to give a sperm concentration of 20 million/0.2 mL), filled into straws and treated with HHP at 30 MPa for 90 min. After HHP treatment, pre-diluted semen (1:1) was diluted to a sperm concentration 20 million/0.2 mL and filled into straws. In addition, part of the semen diluted to a concentration of 20 million/0.2 mL was not treated with HHP (control). All of it was held at +4°C and frozen in a freezer after 2.5-h equilibration. Semen was thawed in a water bath at 38°C and subjected to estimation of the percentage of motile sperm both subjectively and using a computer-assisted semen analyzer and cytometric assessment of sperm cell membrane integrity. Subjective motility and fast progressive motility were significantly higher with pre-diluted (1:1) and HHP treated semen compared to control (P<0.05). No significant differences were observed in percentage of membraneintact spermatozoa between control and experimental groups. Additionally, the influence of HHP on the sperm of individual bulls was assessed. In bull number 2, the HHP treatment after semen pre-dilution significantly improved progressive motility from 54.1 to 63.4 percent (P<0.05). In bull number 4, the HHP treatment after semen pre-dilution significantly improved subjective motility, rapid motility and progressive motility by 12.5, 16.8 and 16.3 percent, respectively (P<0.05). No effect was seen for 6 bulls. It is concluded that for some bulls, the application of HHP before semen freezing may improve the cryopreservation outcome. However, this requires further research in this area, also to determine the fertilizing capacity of bull semen exposed to high hydrostatic pressure.
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Liposki DDM, Ohlweiler LU, Mezzalira JC, Brogni CF, Silva LG, Mezzalira A. CÉLULAS FETAIS BOVINAS DE CULTIVO PRIMÁRIO SUBMETIDAS A DIFERENTES PRESSÕES NEGATIVAS ANTES DO CONGELAMENTO EM PALHETAS. CIÊNCIA ANIMAL BRASILEIRA 2018. [DOI: 10.1590/1809-6891v19e-44099] [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
Resumo O congelamento de células é uma importante ferramenta na preservação de espécies ameaçadas de extinção. Células fetais de cultivo primário obtidas de um bovino clone foram submetidas à pressão negativa (PN) de 200, 500 ou 800 mbar, imediatamente (PN0h) ou três horas antes (PN3h) do congelamento em palhetas finas, com 10% de DMSO como crioprotetor. Células frescas e congeladas sem submissão à PN foram utilizadas como controles. Avaliou-se a viabilidade pós-descongelamento, a curva de proliferação celular, assim como o tempo de duplicação da população (PDT) celular, a cada 24 horas, durante oito dias. Os dados obtidos foram submetidos ao teste de Tukey ou Qui quadrado (P≤0,05). A sobrevivência média dos grupos controle (89,8%) e PN500 0h (88,1%) foi superior aos outros grupos; o tempo de PDT foi semelhante nos grupos fresco (27,5 ± 0,35 h), controle congelado (30,1 ± 2,3 h) e PN500 0h (32,4 ± 1,6 h). O menor tempo foi observado no grupo PN800 0h (21,9 h). O congelamento de células fetais bovinas de cultivo primário, realizado em palhetas de 0,25 mL, com 10% de DMSO, possibilita elevadas taxas de sobrevivência após o descongelamento. A PN modifica a curva de crescimento de células criopreservadas, sendo que as intensidades de 200 ou 500 mbar, aplicadas imediatamente antes do congelamento das células, possibilitam curvas de proliferação semelhantes às obtidas com células frescas.
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Romanek J, Opiela J, Lipiński D, Smorąg Z. Effect of High Hydrostatic Pressure Applied Before Cryopreservation on the Survival Rate and Quality of Porcine Mesenchymal Stem Cells After Thawing. Anim Biotechnol 2017; 29:283-292. [PMID: 29144199 DOI: 10.1080/10495398.2017.1381106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The aim of the present study was to examine the effects of varied high hydrostatic pressure (HHP) values on survival rate, proliferation rate, cell multipotency (transcript expression of SOX2, C-MYC, and REX1) and apoptosis (expression of phosphatidylserine (PS), SURVIVIN at the RNA level and BAX at the protein level) of porcine mesenchymal stem cells (MSCs). MSCs were isolated from porcine bone marrow and cultured in vitro. Before cryopreservation and storage in liquid nitrogen, MSCs were subjected to HHP at the varied pressures of 20, 30, 40, 50, or 60 MPa for 1 h at 24°C. Immediately after thawing and after 8 days of in vitro culture, cells were subjected to trypan blue staining, cell counting, real-time Polymerase Chain Reaction (PCR), western blotting, and fluorescence microscopy. BAX protein expression was only estimated immediately after HHP to exclusively examine the impact of HHP on apoptosis of MSCs. The viability of MSC subjected to 40, 50, and 60 MPa and estimated immediately after thawing increased significantly (P < 0.001 for 60 MPa and P < 0.05 for 40 and 50 MPa) in comparison to control. The proliferation rate of MSCs subjected to 40 MPa HHP was significantly higher than in the control group (P < 0.02) after 8 days of in vitro culture. After 8 days of in vitro culture, no significant differences were noted in the survival rates, PS exposure, or levels of SOX2, C-MYC, REX1, and SURVIVIN gene expression in all analyzed groups compared to control. IN CONCLUSION 40-60 MPa HHP has a positive impact by improving cell viability in short term. 20-60 MPa HHP does not induce nor decrease apoptosis in MSCs. Fortunately, HHP does not induce differentiation of MSC. Our results calls for further analysis using HHP values higher than 60 MPa.
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Affiliation(s)
- Joanna Romanek
- a Department of Animal Reproduction Biotechnology , National Research Institute of Animal Production , Kraków , Poland
| | - Jolanta Opiela
- a Department of Animal Reproduction Biotechnology , National Research Institute of Animal Production , Kraków , Poland
| | - Daniel Lipiński
- b Department of Biochemistry and Biotechnology , Poznań University of Life Sciences , Poznań , Poland
| | - Zdzisław Smorąg
- a Department of Animal Reproduction Biotechnology , National Research Institute of Animal Production , Kraków , Poland
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Gu R, Feng Y, Guo S, Zhao S, Lu X, Fu J, Sun X, Sun Y. Improved cryotolerance and developmental competence of human oocytes matured in vitro by transient hydrostatic pressure treatment prior to vitrification. Cryobiology 2017; 75:144-150. [PMID: 28057448 DOI: 10.1016/j.cryobiol.2016.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 12/23/2016] [Accepted: 12/27/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND At present, the metaphase II (MII) oocytes have a very special structure that leads to complex difficulties associated with its vitrification, and their efficacy still needs a large amount of study to observe. The present study was to investigate whether transient hydrostatic pressure (THP), which was utilized for oocytes before vitrification, had positive effect on the oocytes' developmental ability and reactive oxygen species, and had no damage on meiotic spindle, zona pellucida, and DNA copy number. METHODS All the immature oocytes used in this research were collected between February 2015 and December 2015 in Shanghai Ji Ai Genetics & IVF Institute. The MII oocytes, which were originated from metaphase I (MI) oocytes, were randomly distributed into three groups: A) fresh oocytes; B) vitrification; and C) vitrification after THP treatment. The embryo developmental outcome was evaluated after intracytoplasmic sperm injection and embryo culture. Furthermore, the meiotic spindle behavior, reactive oxygen species (ROS), zona pellucida (ZP), and DNA copy number variation were evaluated and compared among the three groups. RESULTS A total of 568 MII oocytes were included in the study. Embryos from group B had fewer cells on day 3 compared with group A and C (5.01 ± 2.11 for group A, 3.89 ± 2.21 for group B, and 4.69 ± 2.05 for group C). The developmental feature of blastocyst in groups A and C were superior to those of group B. The MII oocytes were manipulated with THP before vitrification, and the equilibration time was significantly shorter in the vitrification procedure (244.9 ± 30.1 vs. 181.5 ± 10.1). The ROS, ZP of vitrified/warmed oocytes in group C were improved with THP before vitrification. THP had no influence on the meiotic spindle and DNA copy number variation of vitrified/warmed oocytes. CONCLUSIONS The results of the study indicated that sublethal THP treatment before vitrification increased the developmental competence of human in vitro matured oocytes, reduced vitrification-related changes in the ROS, which occurred during oocyte vitrification, and did not damage the meiotic spindle, ZP and DNA copy number variation.
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Affiliation(s)
- Ruihuan Gu
- Shanghai Ji Ai Genetics & IVF Institute, Obstetrics & Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Yun Feng
- Reproductive Medical Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Song Guo
- Reproductive Medical Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Shen Zhao
- Reproductive Medical Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Xiaowei Lu
- Reproductive Medical Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Jing Fu
- Shanghai Ji Ai Genetics & IVF Institute, Obstetrics & Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics & IVF Institute, Obstetrics & Gynecology Hospital, Fudan University, Shanghai, 200011, China.
| | - Yijuan Sun
- Shanghai Ji Ai Genetics & IVF Institute, Obstetrics & Gynecology Hospital, Fudan University, Shanghai, 200011, China.
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Horváth A, Szenci O, Nagy K, Végh L, Pribenszky C. Stress preconditioning of semen before cryopreservation improves fertility and increases the number of offspring born: a prospective randomised study using a porcine model. Reprod Fertil Dev 2016; 28:475-81. [DOI: 10.1071/rd14118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/15/2014] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to investigate the effect of applying sublethal stress treatment at room temperature, before cryopreservation (hydrostatic pressure (HP): 40 MPa, 80 min) of 34 boar ejaculate samples, on post-thawed motility and sow fertility. Sows (n = 102) were randomly allocated into equal groups inseminated with HP-treated or untreated frozen–thawed semen. Sows were inseminated twice, 10 h apart, with 6 × 109 spermatozoa per dose without oestrus synchronisation. Rates of non-return of oestrus and pregnancy, and total numbers of piglets and live piglets were significantly higher (P < 0.05) in the HP-treated group. There was also a numerical, albeit non-significant (P > 0.05), improvement in the farrowing rate in the HP-treated group. Although the number of live piglets per litter decreased approximately 15% in both groups by 42 days after farrowing, but this remained significantly higher in the HP-treated group. Although total and progressive sperm motility were significantly (P < 0.001) higher in the HP-treated group, there were no significant differences (P > 0.05) in these parameters between pregnant and non-pregnant sows in either group; thus motility can indicate, but not predict, improved fertility. In conclusion, HP treatment, with sperm cryopreservation, increases in vitro sperm motility and improves reproductive performance without adversely affecting the health of the piglets.
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Rahman MB, Vandaele L, Rijsselaere T, Zhandi M, Maes D, Shamsuddin M, Van Soom A. Oocyte quality determines bovine embryo development after fertilisation with hydrogen peroxide-stressed spermatozoa. Reprod Fertil Dev 2012; 24:608-18. [DOI: 10.1071/rd11237] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Accepted: 10/12/2011] [Indexed: 02/01/2023] Open
Abstract
Exposure of gametes to specific stressors at sublethal levels can enhance the gametes’ subsequent performance in processes such as cryopreservation. In the present study, bull spermatozoa were subjected to H2O2 for 4 h at 100-, 200- and 500-μM levels; computer-assisted sperm analysis (CASA) and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling (TUNEL) assay were used for evaluation of subsequent sperm motility and DNA integrity, respectively. Exposure of spermatozoa to H2O2 did not affect sperm motility but DNA integrity was negatively affected by 500 μM H2O2 compared with mock-exposed spermatozoa, whereas both motility and DNA integrity were affected compared with untreated spermatozoa. Nevertheless, insemination of oocytes with spermatozoa exposed to 200 μM H2O2 increased fertilisation, cleavage and blastocyst rates (P < 0.05). Furthermore, the higher blastocyst yield after fertilisation of oocytes with spermatozoa exposed to 200 μM H2O2 was related to oocyte diameter, with large–medium oocytes yielding higher blastocyst rates, while small-diameter oocytes consistently failed to develop into blastocysts. In conclusion, the results indicate that exposure of spermatozoa to 200 μM H2O2 before sperm–oocyte interaction may enhance in vitro embryo production in cattle. However, this increased embryo production is largely dependent on the intrinsic quality of the oocytes.
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Pribenszky C, Vajta G. Cells under pressure: how sublethal hydrostatic pressure stress treatment increases gametes' and embryos' performance. Reprod Fertil Dev 2011; 23:48-55. [DOI: 10.1071/rd10231] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The principal approach in in vitro embryo culture and manipulation has been a defensive one: procedures aim to satisfy passively the supposed or real physiological needs of gametes and embryos. Similarly, during cryopreservation the aim is to cause minimal damage to cells whilst attempting to obtain the highest achievable cell survival. However, carefully chosen and precisely controlled sublethal stress treatment of cells has been described to improve embryos’ and gametes’ performance, and, as a consequence, subsequent morphological survival, fertilisation, in vitro development, pregnancy and farrowing rates improved considerably compared with untreated controls. This review summarises studies that open up a new approach: instead of – and besides – trying to passively reduce the harm to cells during in vitro manipulations and culture, procedures may also prepare the cells themselves to ward off or reduce the damage by turning up the cells’ own, inner capacities.
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Pribenszky C, Vajta G, Molnar M, Du Y, Lin L, Bolund L, Yovich J. Stress for Stress Tolerance? A Fundamentally New Approach in Mammalian Embryology1. Biol Reprod 2010; 83:690-7. [DOI: 10.1095/biolreprod.110.083386] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Lin L, Pribenszky C, Molnár M, Kragh PM, Du Y, Zhang X, Yang H, Bolund L, Callesen H, Macháty Z, Vajta G. High Hydrostatic Pressure Treatment of Porcine Oocytes Induces Parthenogenetic Activation. Cell Reprogram 2010; 12:475-80. [DOI: 10.1089/cell.2009.0115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Lin Lin
- Department of Genetics and Biotechnology, Aarhus University, Tjele, Denmark
- Institute of Human Genetics, Aarhus University, Aarhus, Denmark
- BGI/HuaDa Shenzhen, Shenzhen, People's Republic of China
| | - Csaba Pribenszky
- Clinic for Large Animals, Faculty of Veterinary Science, Szent István University, Üllő, Dóra major, Hungary
| | - Miklós Molnár
- Clinic for Large Animals, Faculty of Veterinary Science, Szent István University, Üllő, Dóra major, Hungary
| | - Peter M Kragh
- Department of Genetics and Biotechnology, Aarhus University, Tjele, Denmark
| | - Yutao Du
- BGI/HuaDa Shenzhen, Shenzhen, People's Republic of China
| | - Xiuqing Zhang
- BGI/HuaDa Shenzhen, Shenzhen, People's Republic of China
| | - Huanming Yang
- BGI/HuaDa Shenzhen, Shenzhen, People's Republic of China
| | - Lars Bolund
- Institute of Human Genetics, Aarhus University, Aarhus, Denmark
- BGI/HuaDa Shenzhen, Shenzhen, People's Republic of China
| | - Henrik Callesen
- Department of Genetics and Biotechnology, Aarhus University, Tjele, Denmark
| | - Zoltán Macháty
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Gábor Vajta
- Department of Genetics and Biotechnology, Aarhus University, Tjele, Denmark
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Vajta G, Rienzi L, Cobo A, Yovich J. Embryo culture: can we perform better than nature? Reprod Biomed Online 2009; 20:453-69. [PMID: 20202911 DOI: 10.1016/j.rbmo.2009.12.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 07/20/2009] [Accepted: 12/09/2009] [Indexed: 11/27/2022]
Abstract
Culture of preimplantation-stage embryos has always been a key element of laboratory embryology and has contributed substantially to the success of many assisted reproduction procedures. During the past decade, its importance has increased as extended in-vitro embryo culture and single blastocyst transfer have become indispensable parts of the approach to decreasing the chance of multiple pregnancy while preserving the overall efficiency of the treatment. However, in spite of the scientific and commercial challenge stimulating research worldwide to optimize embryo culture conditions, a consensus is missing even in the basic principles, including composition and exchange of media, the required physical and biological environment and even the temperature of incubation. This review attempts to summarize the controversies, demonstrate the fragility of some widely accepted dogmas and generate an open-minded debate towards rapid and efficient optimization. New approaches expanding the traditional frames of mammalian embryo culture are also discussed. Although some researchers suppose that the efficiency of the presently applied in-vitro culture systems have already approached the biological limits, authors are confident that substantial improvement may be achieved that may expand considerably the possibilities of future assisted reproduction in humans.
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Affiliation(s)
- Gábor Vajta
- Cairns Fertility Centre, Cairns, QLD 4870, Australia.
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Scheuerer B. Factors and methods of pig oocyte and embryo quality improvement and their application in reproductive biotechnology. Reprod Biol 2009. [DOI: 10.1016/s1642-431x(12)60020-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Huang SY, Pribenszky C, Kuo YH, Teng SH, Chen YH, Chung MT, Chiu YF. Hydrostatic pressure pre-treatment affects the protein profile of boar sperm before and after freezing–thawing. Anim Reprod Sci 2009; 112:136-49. [DOI: 10.1016/j.anireprosci.2008.04.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2008] [Revised: 04/06/2008] [Accepted: 04/23/2008] [Indexed: 01/15/2023]
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Lin L, Du Y, Liu Y, Kragh PM, Li J, Purup S, Kuwayama M, Zhang X, Yang H, Bolund L, Vajta G. Elevated NaCl concentration improves cryotolerance and developmental competence of porcine oocytes. Reprod Biomed Online 2009; 18:360-6. [DOI: 10.1016/s1472-6483(10)60094-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Lin L, Kragh PM, Purup S, Kuwayama M, Du Y, Zhang X, Yang H, Bolund L, Callesen H, Vajta G. Osmotic stress induced by sodium chloride, sucrose or trehalose improves cryotolerance and developmental competence of porcine oocytes. Reprod Fertil Dev 2009; 21:338-44. [DOI: 10.1071/rd08145] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Accepted: 09/29/2008] [Indexed: 12/20/2022] Open
Abstract
Exposure of porcine oocytes to increased concentrations of NaCl prior to manipulation has been reported not only to increase cryotolerance after vitrification, but also to improve developmental competence after somatic cell nuclear transfer (SCNT). In the present study we compared the effects of NaCl with those of concentrated solutions of two non-permeable osmotic agents, namely sucrose and trehalose, on the cryotolerance and developmental competence of porcine oocytes. In Experiment 1, porcine in vitro-matured cumulus–oocyte complexes (COCs; n = 1200) were exposed to 588 mOsmol NaCl, sucrose or trehalose solutions for 1 h, allowed to recover for a further 1 h, vitrified, warmed and subjected to parthenogenetic activation. Both Day 2 (where Day 0 is the day of activation) cleavage and Day 7 blastocyst rates were significantly increased after NaCl, sucrose and trehalose osmotic treatments compared with untreated controls (cleavage: 46 ± 5%, 44 ± 7%, 45 ± 4% and 26 ± 6%, respectively; expanded blastocyst rate: 6 ± 1%, 6 ± 2%, 7 ± 2% and 1 ± 1%, respectively). In Experiment 2, COCs (n = 2000) were treated with 588 mOsmol NaCl, sucrose or trehalose, then used as recipients for SCNT (Day 0). Cleavage rates on Day 1 did not differ between the NaCl-, sucrose-, trehalose-treated and the untreated control groups (92 ± 3%, 95 ± 3%, 92 ± 2% and 94 ± 2%, respectively), but blastocyst rates on Day 6 were higher in all treated groups compared with control (64 ± 2%, 69 ± 5%, 65 ± 3% and 47 ± 4%, respectively). Cell numbers of Day 6 blastocysts were higher in the control and NaCl-treated groups compared with the sucrose- and trehalose-treated groups. In conclusion, treatment of porcine oocytes with osmotic stress improved developmental competence after vitrification combined with parthenogenetic activation, as well as after SCNT.
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Du Y, Lin L, Schmidt M, Bøgh IB, Kragh PM, Sørensen CB, Li J, Purup S, Pribenszky C, Molnár M, Kuwayama M, Zhang X, Yang H, Bolund L, Vajta G. High hydrostatic pressure treatment of porcine oocytes before handmade cloning improves developmental competence and cryosurvival. CLONING AND STEM CELLS 2008; 10:325-30. [PMID: 18479211 DOI: 10.1089/clo.2007.0089] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
An innovative technique, called the high hydrostatic pressure (HHP) treatment, has been recently reported to improve the cryosurvival of gametes or embryos in certain mammalian species. The aim of the present study was to investigate the in vitro and in vivo developmental competence and cryotolerance of embryos produced by handmade cloning (HMC) after pressure treatment of recipient oocytes. In vitro-matured porcine oocytes were treated with a sublethal hydrostatic pressure of 20 MPa (200 times greater than atmospheric pressure) and recovered for either 1 or 2 h (HHP1 and HHP2 groups, respectively) before they were used for HMC. After 7 days of in vitro culture, blastocyst rates and mean cell numbers were determined. Randomly selected blastocysts were vitrified with the Cryotop method based on minimum volume cooling procedure. The blastocyst rate was higher in the HHP2 group than in the control group (68.2 +/- 4.1% vs. 46.4 +/- 4.2%; p < 0.01), while there was no difference between HHP1 and control group (52.1 +/- 1.2% vs. 49.0 +/- 2.7%; p > 0.05). Similar mean cell numbers of produced blastocysts were obtained in HHP2 and control groups (56 +/- 4 vs. 49 +/- 5; p > 0.05). Subsequent blastocyst vitrification with the Cryotop method resulted in significantly higher survival rate after thawing in the HHP2 group than in the control group (61.6 +/- 4.0% vs. 30.2 +/- 30.9%; p < 0.01). Fifty-six and 57 day 5 to day 7 fresh blastocysts in HHP1 group were transferred into two recipient sows on day 5 of the estrous cycle. One recipient was diagnosed pregnant and gave birth to two healthy piglets by naturally delivery on day 122 of gestation. This pilot study proved that the sublethal HHP treatment of porcine oocytes before HMC results in improved in vitro developmental competence and cryotolerance, and supports embryonic and fetal development as well as pregnancy establishment and maintenance up to the birth of healthy piglets.
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Affiliation(s)
- Yutao Du
- Population Genetics and Embryology, Institute of Genetics and Biotechnology, University of Aarhus, Tjele, Denmark
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Großfeld R, Sieg B, Struckmann C, Frenzel A, Maxwell W, Rath D. New aspects of boar semen freezing strategies. Theriogenology 2008; 70:1225-33. [DOI: 10.1016/j.theriogenology.2008.07.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Increased stress tolerance of matured pig oocytes after high hydrostatic pressure treatment. Anim Reprod Sci 2008; 106:200-7. [DOI: 10.1016/j.anireprosci.2008.01.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Revised: 12/05/2007] [Accepted: 01/14/2008] [Indexed: 11/21/2022]
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