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Keskin N, Erdogan C, Bucak MN, Ozturk AE, Bodu M, Ili P, Baspinar N, Dursun S. Cryopreservation Effects on Ram Sperm Ultrastructure. Biopreserv Biobank 2020; 18:441-448. [PMID: 32816526 DOI: 10.1089/bio.2020.0056] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cryoprotectants are known to have protective effects against cryodamage to spermatozoa. In this study, the cryoprotective effects of two cryoprotectants (glycerol, ethylene glycol) and cryoprotectants/trehalose combinations on frozen-thawed ram spermatozoa were investigated at the ultrastructural level. For this purpose, ejaculates collected from Konya Merino rams were pooled and diluted with a tris-based extender containing additives, including 5% glycerol, 3% glycerol +60 mM trehalose, 1.5% glycerol +100 mM trehalose, 5% ethylene glycol, 3% ethylene glycol +60 mM trehalose, and 1.5% ethylene glycol +100 mM trehalose. They were all cooled to 5°C and then frozen in 0.25 mL French straws in liquid nitrogen. The samples were thawed at 37°C and centrifuged to remove the diluents. Then, they were processed using a scanning transmission electron microscope. In the statistical analysis, the number of ultrastructurally cryodamaged and intact spermatozoa were counted in longitudinal and transverse ultrathin sections in all groups by electron microscopic examination. The amount of intact spermatozoa in the groups containing 5% ethylene glycol and 1.5% ethylene glycol +100 mM trehalose was found to be higher than other groups (p < 0.05). As a result, it was suggested that the groups of 5% ethylene glycol and 1.5% ethylene glycol +100 mM trehalose provided the highest protection for the ultrastructural morphology of frozen-thawed Konya Merino ram spermatozoa among the groups.
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Affiliation(s)
- Nazan Keskin
- Department of Histology and Embryology, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | - Cennet Erdogan
- Department of Histology and Embryology, Pamukkale University Graduate School of Health Sciences, Denizli, Turkey
| | - Mustafa Numan Bucak
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Ali Erdem Ozturk
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Mustafa Bodu
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Pınar Ili
- Denizli Health Services Vocational High School, Pamukkale University, Denizli, Turkey
| | - Nuri Baspinar
- Department of Biochemistry, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Sukru Dursun
- Department of Gynecology and Obstetrics, Aksaray University, Veterinary Faculty, Aksaray, Turkey
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2
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Pezo F, Romero F, Zambrano F, Sánchez RS. Preservation of boar semen: An update. Reprod Domest Anim 2019; 54:423-434. [DOI: 10.1111/rda.13389] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/28/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Felipe Pezo
- Laboratory of Reproductive Medicine and Molecular Endocrinology Center of Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT‐BIOREN) Temuco Chile
| | - Fernando Romero
- Laboratory of Neurosciences and Peptides Center for Biotechnology in Reproduction—Scientific and Technological Bioresource Nucleus (CEBIOR‐BIOREN) Temuco Chile
- Department of Preclinical Sciences, Faculty of Medicine Universidad de La Frontera Temuco Chile
| | - Fabiola Zambrano
- Laboratory of Reproductive Medicine and Molecular Endocrinology Center of Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT‐BIOREN) Temuco Chile
- Laboratory of Neurosciences and Peptides Center for Biotechnology in Reproduction—Scientific and Technological Bioresource Nucleus (CEBIOR‐BIOREN) Temuco Chile
| | - Raúl Segundo Sánchez
- Laboratory of Reproductive Medicine and Molecular Endocrinology Center of Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT‐BIOREN) Temuco Chile
- Laboratory of Neurosciences and Peptides Center for Biotechnology in Reproduction—Scientific and Technological Bioresource Nucleus (CEBIOR‐BIOREN) Temuco Chile
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3
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Akhtarshenas B, Karami Shabankareh H, Hajarian H, Bucak MN, Abdolmohammadi AR, Dashtizad M. The protease inhibitor antipain has a beneficial synergistic effect with trehalose for ram semen cryopreservation. Reprod Domest Anim 2018; 53:1359-1366. [DOI: 10.1111/rda.13253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/12/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Bahareh Akhtarshenas
- IVF Laboratory Department of Animal Science Faculty of Agricultural and Engineering Science Razi University Kermanshah Iran
| | - Hamed Karami Shabankareh
- IVF Laboratory Department of Animal Science Faculty of Agricultural and Engineering Science Razi University Kermanshah Iran
| | - Hadi Hajarian
- IVF Laboratory Department of Animal Science Faculty of Agricultural and Engineering Science Razi University Kermanshah Iran
| | - Mustafa Numan Bucak
- Department of reproduction and artificial insemination Faculty of Veterinary Selcuk University Selcuk Turkey
| | - Ali Reza Abdolmohammadi
- IVF Laboratory Department of Animal Science Faculty of Agricultural and Engineering Science Razi University Kermanshah Iran
| | - Mojtaba Dashtizad
- Department of Animal Science National Institute of genetics and biotechnology Tehran Iran
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4
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Boar seminal plasma exosomes maintain sperm function by infiltrating into the sperm membrane. Oncotarget 2018; 7:58832-58847. [PMID: 27542209 PMCID: PMC5312279 DOI: 10.18632/oncotarget.11315] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/28/2016] [Indexed: 12/14/2022] Open
Abstract
Seminal plasma ingredients are important for maintenance of sperm viability. This study focuses on the effect of boar seminal plasma exosomes on sperm function during long-term liquid storage. Boar seminal plasma exosomes had typical nano-structure morphology as measured by scanning electron microscopy (SEM) and molecular markers such as AWN, CD9 and CD63 by western blot analysis. The effect on sperm parameters of adding different ratio of boar seminal plasma exosomes to boar sperm preparations was analyzed. Compared to the diluent without exosomes, the diluent with four times or sixteen times exosomes compared to original semen had higher sperm motility, prolonged effective survival time, improved sperm plasma membrane integrity (p < 0.05), increased total antioxidant capacity (T-AOC) activity and decreased malondialdehyde (MDA) content. The diluent containing four times concentration of exosomes compared to original semen was determined to inhibit premature capacitation, but not to influence capacitation induced in vitro. Inhibition of premature capacitation is likely related to the concentration of exosomes which had been demonstrated to transfer proteins including AWN and PSP-1 into sperm. In addition, using fluorescence microscopy and scanning electron microscopy analysis, it was demonstrated that exosomes in diluent were directly binding to the membrane of sperm head which could improve sperm plasma membrane integrity.
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5
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Impact of supplementation of semen extender with antioxidants on the quality of chilled or cryopreserved Arabian stallion spermatozoa. Cryobiology 2017; 79:14-20. [DOI: 10.1016/j.cryobiol.2017.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/31/2017] [Accepted: 10/03/2017] [Indexed: 01/11/2023]
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6
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Iqbal S, Naz S, Ahmed H, Andrabi SMH. Cryoprotectant effect of trehalose in extender on post-thaw quality and in vivo fertility of water buffalo (Bubalus bubalis) bull spermatozoa. Andrologia 2017; 50. [DOI: 10.1111/and.12794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 11/28/2022] Open
Affiliation(s)
- S. Iqbal
- Semen Production Unit Qadirabad; Sahiwal Pakistan
| | - S. Naz
- Animal Reproduction Laboratory; Animal Sciences Institute; National Agricultural Research Centre; Islamabad Pakistan
| | - H. Ahmed
- Animal Reproduction Laboratory; Animal Sciences Institute; National Agricultural Research Centre; Islamabad Pakistan
| | - S. M. H. Andrabi
- Animal Reproduction Laboratory; Animal Sciences Institute; National Agricultural Research Centre; Islamabad Pakistan
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7
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El-Sisy GA, Shahba MI, El-Sheshtawy RI. Freezability of buffalo semen with TRIS extender enriched with disaccharides (trehalose or sucrose) and different glycerol concentrations. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2016. [DOI: 10.1016/j.apjr.2016.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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8
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Yeste M. Recent Advances in Boar Sperm Cryopreservation: State of the Art and Current Perspectives. Reprod Domest Anim 2016; 50 Suppl 2:71-9. [PMID: 26174922 DOI: 10.1111/rda.12569] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 06/05/2015] [Indexed: 01/04/2023]
Abstract
While sperm cryopreservation is the best technology to store boar semen for long-term periods, only 1% of all artificial inseminations (AI) conducted worldwide are made using frozen-thawed boar sperm. With the emergence of long-term extenders for liquid storage, the use of cryopreserved sperm in routine AI is less required. However, banks of boar semen contain cryopreserved sperm and planning inseminations in AI centres may benefit from the use of frozen-thawed semen. Therefore, there is an interest in the use of this technology to preserve boar sperm. In this regard, although the first attempts to cryopreserve boar semen date back to the seventies and this technology is still considered as optimal, some relevant improvements have been made in the last decade. After giving a general picture about boar sperm cryodamage, the present review seeks to shed light on these recent cryopreservation advances. These contributions regard to protein markers for predicting ejaculate freezability, sperm selection prior to start cryopreservation procedures, additives to freezing and thawing extenders, relevance of the AI-technique and insemination-to-ovulation interval. In conclusion, most of these progresses have allowed counteracting better boar sperm cryodamage and are thus considered as forward steps for this storage method. It is also worth noting that, despite being lower than fresh/extended semen, reproductive performance outcomes following AI with frozen-thawed boar sperm are currently acceptable.
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Affiliation(s)
- M Yeste
- Nuffield Department of Obstetrics and Gynaecology, Level 3, Women's Centre, John Radcliffe Hospital, University of Oxford, Headington, Oxford, UK
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9
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Funahashi H. Methods for Improving In Vitro and In Vivo Boar Sperm Fertility. Reprod Domest Anim 2016; 50 Suppl 2:40-7. [PMID: 26174918 DOI: 10.1111/rda.12568] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 06/05/2015] [Indexed: 11/30/2022]
Abstract
Fertility of boar spermatozoa is changed after ejaculation in vivo and in vitro. During processing for in vitro fertilization (IVF), although spermatozoa are induced capacitation, resulting in a high penetration rate, persistent obstacle of polyspermic penetration is still observed with a high incidence. For artificial insemination (AI), we still need a large number of spermatozoa and lose a majority of those in the female reproductive tract. Fertility of cryopreserved boar spermatozoa is still injured through freezing and thawing process. In the present brief review, factors affecting fertility of boar sperm during IVF, AI and cryopreservation are discussed in the context of discovering methodologies to improve it.
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Affiliation(s)
- H Funahashi
- Department of Animal Science, Okayama University, Okayama, Japan
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10
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Yeste M. Sperm cryopreservation update: Cryodamage, markers, and factors affecting the sperm freezability in pigs. Theriogenology 2015; 85:47-64. [PMID: 26506124 DOI: 10.1016/j.theriogenology.2015.09.047] [Citation(s) in RCA: 228] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/20/2015] [Accepted: 09/22/2015] [Indexed: 02/04/2023]
Abstract
Cryopreservation is the most efficient method for long-term preservation of mammalian sperm. However, freeze-thawing procedures may strongly impair the sperm function and survival and thus decrease the reproductive performance. In addition, the sperm resilience to withstand cryopreservation, also known as freezability, presents a high individual variability. The present work summarizes the principles of cryoinjury and the relevance of permeating and nonpermeating cryoprotective agents. Descriptions about sperm cryodamage are mainly focused on boar sperm, but reference to other mammalian species is also made when relevant. Main cryoinjuries not only regard to sperm motility and membrane integrity, but also to the degradation effect exerted by freeze-thawing on other important components for sperm fertilizing ability, such as mRNAs. After delving into the main differences between good and poor freezability boar ejaculates, those protein markers predicting the sperm ability to sustain cryopreservation are also mentioned. Moreover, factors that may influence sperm freezability, such as season, diet, breed, or ejaculate fractions are discussed, together with the effects of different additives, like seminal plasma and antioxidants. After briefly referring to the effects of long-term sperm preservation in frozen state and the reproductive performance of frozen-thawed boar sperm, this work speculates with new research horizons on the preservation of boar sperm, such as vitrification and freeze-drying.
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Affiliation(s)
- Marc Yeste
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford, UK.
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11
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Athurupana R, Takahashi D, Ioki S, Funahashi H. Trehalose in glycerol-free freezing extender enhances post-thaw survival of boar spermatozoa. J Reprod Dev 2015; 61:205-10. [PMID: 25754239 PMCID: PMC4498367 DOI: 10.1262/jrd.2014-152] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cryopreservation of boar semen is still considered suboptimal due to lower fertility as compared with fresh samples when glycerol, a permeating cryoprotectant, is used. Trehalose is a non-permeable cryoprotectant and nonreducing disaccharide known to stabilize proteins and biologic membranes. The aim of this study was to evaluate the cryosurvival and in vitro penetrability of boar spermatozoa when glycerol was replaced with trehalose in a freezing extender. Ejaculated Berkshire semen samples were diluted in egg yolk-based freezing extender containing glycerol (100 mM) or trehalose (0, 50, 100, 150, 200 and 250 mM) and cryopreserved using a straw freezing procedure. Thawed samples were analyzed for motility, viability, mitochondrial membrane potential (MMP), and acrosome integrity. In experiment 2, penetrability of spermatozoa cryopreserved with 100 mM glycerol or trehalose was examined. Replacement of cryoprotectant glycerol (100 mM) with trehalose had no
effect on sperm viability, but replacing it with 100 mM trehalose improved motility, MMP and acrosome integrity significantly. Sperm motility and MMP were considerably higher in 100 mM trehalose, whereas the acrosome integrity was substantially higher in 100–250 mM trehalose. The in vitro penetration rate was also significantly higher in spermatozoa cryopreserved with trehalose (61.3%) than in those cryopreserved with glycerol (43.6%). In conclusion, 100 mM non-permeable trehalose can be used to replace glycerol, a permeating cryoprotectant, for maintenance of better post-thaw quality of boar spermatozoa.
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Affiliation(s)
- Rukmali Athurupana
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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12
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Wang P, Li Y, Hu XC, Cai XL, Hou LP, Wang YF, Hu JH, Li QW, Suo LJ, Fan ZG, Zhang B. Cryoprotective effects of low-density lipoproteins, trehalose and soybean lecithin on murine spermatogonial stem cells. ZYGOTE 2014; 22:158-63. [PMID: 22974447 DOI: 10.1017/s0967199412000378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Spermatogonial stem cells (SSCs) have the ability to self-renew and offer a pathway for genetic engineering of the male germ line. Cryopreservation of SSCs has potential value for the treatment of male infertility, spermatogonial transplantation, and so on. In order to investigate the cryopreservation effects of different cryoprotectants on murine SSCs, 0.2 M of low-density lipoproteins (LDL), trehalose and soybean lecithin were added to the cryoprotective medium, respectively, and the murine SSCs were frozen at -80°C or -196°C. The results indicated that the optimal recovery rates of murine SSCs in the cryoprotective medium supplemented with LDL, trehalose and soybean lecithin were 92.53, 76.35 and 75.48% at -80°C, respectively. Compared with freezing at -196°C, the optimum temperature for improvement of recovery rates of frozen murine SSCs, cryopreservation in three different cryoprotectants at -80°C, were 17.11, 6.68 and 10.44% respectively. The recovery rates of murine SSCs in the cryoprotective medium supplemented with 0.2 M LDL were significantly higher than that of other cryoprotectants (P < 0.05). Moreover, the recovery rates were demonstrated to be greater at -80°C compared with at -196°C (P < 0.05). In conclusion, 0.2 M of LDL could significantly protect murine SSCs at -80°C. In the freezing-thawing process, LDL is responsible for the cryopreservation of murine SSCs because it can form a protective film at the surface of membranes. However, more research is needed to evaluate and understand the precise role of LDL during the freezing-thawing of SSCs.
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Affiliation(s)
- Peng Wang
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Ying Li
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Xiao-Chen Hu
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Xiao-Li Cai
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Li-Peng Hou
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Yan-Feng Wang
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Jian-Hong Hu
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Qing-Wang Li
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Li-Juan Suo
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Zhi-Guo Fan
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
| | - Bo Zhang
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, P.R. China
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Najafi A, Zhandi M, Towhidi A, Sharafi M, Akbari Sharif A, Khodaei Motlagh M, Martinez-Pastor F. Trehalose and glycerol have a dose-dependent synergistic effect on the post-thawing quality of ram semen cryopreserved in a soybean lecithin-based extender. Cryobiology 2013; 66:275-82. [PMID: 23500077 DOI: 10.1016/j.cryobiol.2013.03.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 03/03/2013] [Indexed: 11/24/2022]
Abstract
The objective of this study was to examine the interaction of different concentrations of trehalose [0 (T0), 50 (T50) or 100 (T100) mM] and glycerol [5% (G5) or 7% (G7)] on post-thawed quality of ram semen, cryopreserved in a soybean lecithin (SL)-based extender. Twenty-eight ejaculates were collected from four rams and diluted with six trehalose/glycerol combinations: T0G5, T50G5, T100G5, T0G7, T50G7, and T100G7. Sperm motility (CASA), membrane integrity (eosin/nigrosin) and functionality (HOST), abnormal forms, capacitation status (CTC), mitochondrial activity (rhodamine 123), apoptotic features (Annexin V/propidium iodide) and lipoperoxidation (malondialdehyde production) were evaluated after thawing. Extender T100G5 yielded the highest results for total and progressive motility, sperm velocity, normal morphology, functional membranes, active mitochondria and membrane integrity, with P<0.05 in general, except for T50G7 (P>0.05). The combinations T0G5, T0G7 and T100G7 yielded the lowest post-thaw quality. We could not detect significant changes in other kinematic parameters, capacitation status or lipoperoxidation. We conclude that, in our SL-based extender, a combination of 100 mM trehalose and 5% glycerol was the most adequate combination to achieving post-thawing quality in our soybean lecithin-based extender, and our results support that a synergistic effect among trehalose and glycerol exists. We suggest that other combinations could improve these results.
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Affiliation(s)
- Abozar Najafi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
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14
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Hu JH, Sun XZ, Li QW, Zhang T, Hu XC, Hu JH, Wang LQ. The effect of Laminaria japonic polysaccharide on sperm characteristics and biochemical parameters in cryopreserved boar sperm. Anim Reprod Sci 2013; 139:95-100. [PMID: 23639581 DOI: 10.1016/j.anireprosci.2013.03.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/26/2013] [Accepted: 03/27/2013] [Indexed: 11/20/2022]
Abstract
The aim of the present study was to evaluate the cryoprotective effect of Laminaria japonic polysaccharide (LJP) on boar sperm. Semen samples were collected from seven mature Yorkshire boars once a week by the gloved hand technique and frozen-thawed in the extender with LJP added. Extender with LJP added at concentrations of 0.25, 0.5, 1.0, 1.5 and 2.0mg/mL to the extender and its effects on the quality of frozen-thawed boar sperm were assessed. Results showed: (i) sperm motility and plasma membrane integrity were greater in the extender containing 0.5 and 1.0mg/mL LJP, as compared to other groups (P<0.05); (ii) extender added 1.0mg/mL LJP showed the greatest plasma membrane and acrosomal integrity percentages in comparison with other groups (P<0.05); (iii) mitochondrial activity was significantly higher at the concentration of 0.5 and 1.0mg/mL LJP than those of other groups (P<0.05); (iv) in terms of biochemical assessments, 0.5 and 1.0mg/mL LJP improved SOD (superoxide dismutase) and CAT (catalase) concentrations, compared to other groups (P<0.05). However, no significant difference was found in GSH-Px (glutathione peroxidase) concentration when supplemented with LJP. Interestingly, LJP exhibited a dose-related response and the lesser concentration represented greater protective effects. It is also important to note that 1.0mg/mL LJP provides for an enhanced cryoprotective effect in boar semen.
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Affiliation(s)
- Jing-Hua Hu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
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15
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Effects of Taurine or Trehalose supplementation on functional competence of cryopreserved Karan Fries semen. Anim Reprod Sci 2012; 135:1-7. [DOI: 10.1016/j.anireprosci.2012.08.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 08/08/2012] [Accepted: 08/21/2012] [Indexed: 11/17/2022]
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16
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Kumar R, Singh VK, Chhillar S, Atreja SK. Effect of Supplementation of Taurine or Trehalose in Extender on Immunolocalization of Tyrosine Phosphoproteins in Buffalo and Cattle (Karan Fries) Cryopreserved Spermatozoa. Reprod Domest Anim 2012; 48:407-15. [DOI: 10.1111/rda.12088] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 08/19/2012] [Indexed: 11/28/2022]
Affiliation(s)
- R Kumar
- Animal Biochemistry Division; Reproductive Biochemistry Laboratory; National Dairy Research Institute; Karnal; Haryana; India
| | - VK Singh
- Animal Biochemistry Division; Reproductive Biochemistry Laboratory; National Dairy Research Institute; Karnal; Haryana; India
| | - S Chhillar
- Animal Biochemistry Division; Reproductive Biochemistry Laboratory; National Dairy Research Institute; Karnal; Haryana; India
| | - SK Atreja
- Animal Biochemistry Division; Reproductive Biochemistry Laboratory; National Dairy Research Institute; Karnal; Haryana; India
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17
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Oh SA, Ko MH, Kang TY, Choi SH, Ko MS, Chung YH, Cho WM. Effect of Adding Taurine, Hypotaurine and Trehalose as Antioxidants to a Tris-based Egg Yolk Extender on Korean Jeju Black Bull Sperm Quality Following Cryopreservation. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2012. [DOI: 10.5187/jast.2012.54.4.283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Singh VK, Atreja SK, Kumar R, Chhillar S, Singh AK. Assessment of intracellular Ca2+, cAMP and 1,2-diacylglycerol in cryopreserved buffalo (Bubalus bubalis) spermatozoa on supplementation of taurine and trehalose in the extender. Reprod Domest Anim 2011; 47:584-90. [PMID: 21988572 DOI: 10.1111/j.1439-0531.2011.01922.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In mammalian spermatozoa, intracellular calcium plays a major role in sperm functions like motility and capacitation. Cryopreservation-induced modifications to sperm membrane result in an influx of intracellular calcium affecting calcium-dependent intracellular signalling pathways. Intracellular calcium activates adenyl cyclase to produce cAMP that activates phospholipase A(2) (PLA(2) ) and phospholipase C (PLC) generating lysophosphatidyl choline, 1,2-diacylglycerol (DAG) and IP(3) , acting as intracellular secondary messengers required for sperm capacitation. Present study was designed to determine levels of intracellular calcium, cAMP and DAG in fresh and frozen-thawed buffalo spermatozoa cryopreserved in the presence and absence of taurine or trehalose. A total number of nine ejaculates from three randomly chosen buffalo bulls were cryopreserved in Tris-based egg yolk extender and thawed in warm water at 37°C. The cAMP was measured by enzyme immuno assay, and intracellular calcium was quantified using fluorescent dye FURA 2-AM. Total lipid was extracted from spermatozoa, and DAG was estimated using thin layer chromatography followed by spectrophotometric analysis. Intracellular calcium, cAMP and DAG levels in spermatozoa were significantly (p < 0.01) increased following cryopreservation as compared to fresh ejaculate. Addition of taurine or trehalose to the freezing medium significantly decreased (p < 0.01) the levels of intracellular calcium and cAMP in frozen-thawed spermatozoa. 1,2-diacylglycerol content was also decreased significantly (p < 0.01) in spermatozoa cryopreserved in presence of additives. Moreover, significant (p < 0.01) improvement in post-thaw motility, viability and membrane integrity of spermatozoa on addition of taurine or trehalose clearly indicated the reduced level of capacitation-like changes in buffalo spermatozoa.
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Affiliation(s)
- V K Singh
- Reproductive Biochemistry Laboratory, Animal Biochemistry Division, National Dairy Research Institute, Karnal, Haryana, India
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Malo C, Gil L, Cano R, Martínez F, García A, Jerez RA. Dimethylformamide is not better than glycerol for cryopreservation of boar semen. Andrologia 2011; 44 Suppl 1:605-10. [DOI: 10.1111/j.1439-0272.2011.01237.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Kumar R, Atreja SK. Effect of incorporation of additives in tris-based egg yolk extender on buffalo (Bubalus bubalis) sperm tyrosine phosphorylation during cryopreservation. Reprod Domest Anim 2011; 47:485-90. [PMID: 22364363 DOI: 10.1111/j.1439-0531.2011.01908.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phosphorylation of tyrosine residues on sperm protein is a known indicator of capacitation and a major intracellular signalling event. There is evidence that sperm cryopreservation promotes tyrosine phosphorylation and is associated with reduced fertility of spermatozoa. Under this study, cryoprotective role of different additives namely taurine, trehalose, catalase and 4-bromophenacyl bromide on buffalo sperm quality was evaluated. Buffalo semen was cryopreserved in tris-based egg yolk extender supplemented with additives like taurine (50 mm) or trehalose (100 mm) or 4-bromophenacyl bromide (200 μm) or catalase (100 U/ml) and used for assessment of levels of tyrosine phosphorylation in frozen-thawed spermatozoa. The results obtained were compared with the level of protein tyrosine phosphorylation of semen cryopreserved in tris-based egg yolk extender without additives. Proteins were extracted from a total number of nine ejaculates from three individual buffalo bulls chosen at random and analysed for tyrosine phospho-proteins using SDS-PAGE followed by immunoblotting. Monoclonal anti-phosphotyrosine antibody (Clone pT-154) was used as primary antibody followed by treatment with HRP-conjugated secondary antibody. Signals were detected on X-ray film using chemiluminescence. Nine proteins (p20, p30, p32, p38, p49, p56, p59, p72 and p86) were found to be tyrosine phosphorylated in cryopreserved spermatozoa. Supplementation of additives significantly (p<0.05) reduced the level of protein tyrosine phosphorylation in spermatozoa. Moreover, this study showed improved (p<0.05) post-thaw motility, viability and membrane integrity of spermatozoa on addition of these additives. The results obtained clearly indicate reduced level of capacitation like changes on supplementation of additives in terms of protein tyrosine phosphorylation.
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Affiliation(s)
- R Kumar
- Reproductive Biochemistry Laboratory, Animal Biochemistry Division, National Dairy Research Institute, Karnal, Haryana, India
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Chaytor JL, Tokarew JM, Wu LK, Leclère M, Tam RY, Capicciotti CJ, Guolla L, von Moos E, Findlay CS, Allan DS, Ben RN. Inhibiting ice recrystallization and optimization of cell viability after cryopreservation. Glycobiology 2011; 22:123-33. [PMID: 21852258 DOI: 10.1093/glycob/cwr115] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The ice recrystallization inhibition activity of various mono- and disaccharides has been correlated with their ability to cryopreserve human cell lines at various concentrations. Cell viabilities after cryopreservation were compared with control experiments where cells were cryopreserved with dimethylsulfoxide (DMSO). The most potent inhibitors of ice recrystallization were 220 mM solutions of disaccharides; however, the best cell viability was obtained when a 200 mM d-galactose solution was utilized. This solution was minimally cytotoxic at physiological temperature and effectively preserved cells during freeze-thaw. In fact, this carbohydrate was just as effective as a 5% DMSO solution. Further studies indicated that the cryoprotective benefit of d-galactose was a result of its internalization and its ability to mitigate osmotic stress, prevent intracellular ice formation and/or inhibit ice recrystallization. This study supports the hypothesis that the ability of a cryoprotectant to inhibit ice recrystallization is an important property to enhance cell viability post-freeze-thaw. This cryoprotective benefit is observed in three different human cell lines. Furthermore, we demonstrated that the ability of a potential cryoprotectant to inhibit ice recrystallation may be used as a predictor of its ability to preserve cells at subzero temperatures.
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Affiliation(s)
- Jennifer L Chaytor
- Department of Chemistry, University of Ottawa, D'Iorio Hall, 10 Marie Curie, Ottawa, ON, Canada K1N 6N5
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Gil MA, Hernandez M, Roca J, Almiñana C, Lucas X, Cuello C, Vazquez JM, Martínez EA. Pentoxifylline added to freezing or post-thaw extenders does not improve the survival or in vitro fertilising capacity of boar spermatozoa. Reproduction 2010; 139:557-64. [DOI: 10.1530/rep-09-0274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study evaluated whether pentoxifylline added to freezing and thawing extenders influenced the function of boar spermatozoa. In Experiment 1, pooled ejaculated sperm-rich fractions were frozen in 0.5 ml straws after dilution in extender supplemented with pentoxifylline to a final concentration of 0, 2, 4, 8, 16 or 32 mM. The addition of 4, 8, 16 and 32 mM pentoxifylline to the freezing extender significantly decreased the progressive and total motility of spermatozoa. The percentage of viable spermatozoa with intact acrosomes as well as the penetration rate and the efficiency of fertilisation were significantly lower in pentoxifylline-treated groups compared with the untreated control. In Experiment 2, a pool of three straws with ‘good’ post-thaw sperm quality parameters and another three straws with ‘poor’ sperm quality were diluted in extender with 0, 1, 2, 4, 8, 16 or 32 mM pentoxifylline. Post-thaw samples with both ‘good’ and ‘poor’ sperm quality with 0, 2, 4, 8 and 16 mM were used to assess IVF parameters. The addition of pentoxifylline to post-thaw extender did not improve the post-thaw motility or viability of spermatozoa compared with the control. The in vitro penetration was higher (P<0.05) than the control for oocytes fertilised with spermatozoa that were thawed and incubated in extender with 4, 8 and 16 mM pentoxifylline. However, no differences were observed in the efficiency of fertilisation. We conclude that pentoxifylline, as a supplement added to the freezing extender, has a deleterious effect and that it does not improve the survival or in vitro fertilising efficiency of frozen–thawed boar spermatozoa when added after thawing.
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