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Víquez L, Sevilla F, Araya-Zúñiga I, Soler C, Barquero V, Roldan ERS, Valverde A. Morphometric assessment of cryopreserved livestock bull spermatozoa in the tropics. Reprod Domest Anim 2023; 58:1439-1447. [PMID: 37603017 DOI: 10.1111/rda.14459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/22/2023]
Abstract
The identification of different morphometric patterns of spermatozoa serves as a basis for improving our understanding of the diversity in an ejaculate and to relate them to the potential fertility of males. In this study, we aimed to examine the semen subpopulation structure, following dilution in semen of extenders, using a mathematical approach a possible application to fertility analyses. Ten sexually mature Bos taurus bulls were randomly allotted to one of three groups: (1) Tris-citric acid-egg yolk extender (Tris-EY); (2) commercial egg yolk extender OptiXcell® and (3) commercial egg yolk extender Triladyl®. The results showed significant differences (p < .05) between extenders in terms of values for head size and head shape variables of individual sperm, indicating an influence of extender composition. Sperm head width was found to significantly differ (p < .05) according to the extender, decreasing in the following order: OptiXcell® (4.836 ± 0.017 μm), Triladyl® (4.695 ± 0.012 μm) and Tris-EY (4.638 ± 0.010 μm). Principal component analysis allowed us to identify two subpopulations in OptiXcell®, and three subpopulations were each found in Triladyl® and Tris-EY. Overall, we observed significant differences between sperm subpopulations within each extender (p < .05), with differences in sperm head size and shape between bovine species that can be related to functionality and fertility capabilities.
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Affiliation(s)
- Luis Víquez
- School of Agronomy, Animal Reproduction Laboratory, Costa Rica Institute of Technology, Alajuela, San Carlos, Costa Rica
| | - Francisco Sevilla
- School of Agronomy, Animal Reproduction Laboratory, Costa Rica Institute of Technology, Alajuela, San Carlos, Costa Rica
| | - Ignacio Araya-Zúñiga
- School of Agronomy, Animal Reproduction Laboratory, Costa Rica Institute of Technology, Alajuela, San Carlos, Costa Rica
| | - Carles Soler
- Department of Cellular Biology, Functional Biology and Physical Anthropology, Faculty of Biological Sciences, University of Valencia, Burjassot, Spain
| | - Vinicio Barquero
- Faculty of Agri-Food Sciences, Alfredo Volio Mata Experimental Station, University of Costa Rica, Cartago, Costa Rica
| | - Eduardo R S Roldan
- Department of Biodiversity and Evolutionary Biology, National Museum of Natural Sciences, Spanish National Research Council (CSIC), Madrid, Spain
| | - Anthony Valverde
- School of Agronomy, Animal Reproduction Laboratory, Costa Rica Institute of Technology, Alajuela, San Carlos, Costa Rica
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2
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Optimizing Bull Semen Cryopreservation Media Using Multivariate Statistics Approaches. Animals (Basel) 2023; 13:ani13061077. [PMID: 36978618 PMCID: PMC10044293 DOI: 10.3390/ani13061077] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 03/19/2023] Open
Abstract
Cryo-injury reduces post-thaw semen quality. Extender components play a protective role, but existing experimental approaches do not elucidate interactions among extender components, semen samples, and post-thaw quality. To identify optimal concentrations for 12 extender ingredients, we ran 122 experiments with an I-optimal completely random design using a large dataset from our previous study. We obtained a maximum predicted total motility of 70.56% from an I-optimal design and 73.75% from a Monte Carlo simulation. Individual bull variations were significant and interacted with extenders independently. 67% of bulls reliably preferred extender formulations to reach maximum motility. Multifactor analysis suggests that some antioxidants may offer superior protection over others. Partial least squares path modeling (PLS-PM) found the highest positive loadings for glutathione in the antioxidant class, glycerol in the CPA class, and fructose in the basic compounds class. The optimal ranges for milk, water, and ethylene glycol were extremely narrow. Egg yolk, cholesterol-loaded cyclodextrin, and nerve growth factor had medium-loading impacts. PLS-PM showed that CPA, osmoregulators, and basic components were the most efficient contributors to motility, while the antioxidant and extracellular protectant classes had less efficiency. Thus, ingredients, concentrations, and interactions of extender compounds are critical to extender formulation, especially when using multiple compounds with the same function.
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3
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Balogun KB, Nicholls G, Sokunbi OA, Stewart KR. Cryoprotectant effects of natural honey on spermatozoa quality of pre-freezing and frozen-thawed boar semen. J Anim Sci 2023; 101:skac384. [PMID: 36409528 PMCID: PMC9833011 DOI: 10.1093/jas/skac384] [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: 08/25/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
Natural honey has been successfully used in the preservation of mammalian gametes because of its beneficial properties. The objectives of this study were to determine the inclusion level of honey in extender for improving boar semen quality before freezing and to investigate the effects of honey inclusion in extender and freezing media on post-thaw quality of frozen-thawed boar semen samples. Ejaculates from six terminally crossbred boars were collected using the gloved-hand technique for two experiments. Experiment 1 was a randomized block design, evaluating four inclusion levels of honey in boar semen extender [Control (0H)-Androhep Plus or Androhep Plus with 0.25%, 0.50%, and 0.75% honey (0.25H, 0.50H, and 0.75H respectively)]. Ejaculates were pooled, aliquoted according to treatments, and cooled for 24 h at 17 ºC. The results of this experiment were used to determine inclusion levels in exp. 2. Experiment 2 was a 2 x ×3 factorial design, evaluating the inclusion of honey in boar semen extender and freezing media. Semen samples from individual boars were cooled in extender with or without honey (C0: Androhep Plus; C1: Androhep Plus + 0.25% honey). After 24 h, semen samples were evaluated, diluted in lactose-egg yolk (LEY) media, and one of three freezing media types; F0: 93% LEY + 6% glycerol + 1% Equex-STM Paste (ESP); F1: 93% LEY + (3% glycerol and 3% honey) + 1% ESP; and F2: 93% LEY + 6% glycerol + (0.5% ESP and 0.5% honey). Samples were frozen in 0.5 mL straws using a controlled-rate freezer and stored in liquid nitrogen. In exp. 1, 0.25H and 0.50H improved motility (P = 0.033) and progressive motility (P = 0.001) of cooled boar semen. Nevertheless, 0.25H was selected for exp. 2. In exp. 2, post-thaw motility and progressive motility were highest (P < 0.05) in C0F2 but not different from C1F2. Morphologically normal cells and acrosomes were higher with all inclusion levels of honey (P < 0.05). In conclusion, 0.25% and 0.50% inclusion of honey in Androhep Plus improves motility and progressive motility of cooled boar semen samples after 24 h. Supplementing Androhep Plus with 0.25% honey maintains higher normal sperm cells and acrosomes of cryopreserved boar semen. Replacing 50% Equex-STM paste with honey in freezing media improves post-thaw sperm motility, progressive motility, percentage of normal sperm, and acrosome of cryopreserved boar semen.
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Affiliation(s)
- Kayode B Balogun
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
- Department of Animal Science, University of Ibadan, Ibadan 200005, Nigeria
| | - Griffin Nicholls
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Olujide A Sokunbi
- Department of Animal Science, University of Ibadan, Ibadan 200005, Nigeria
| | - Kara R Stewart
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
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4
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Machine learning and hypothesis driven optimization of bull semen cryopreservation media. Sci Rep 2022; 12:22328. [PMID: 36567337 PMCID: PMC9790888 DOI: 10.1038/s41598-022-25104-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/24/2022] [Indexed: 12/26/2022] Open
Abstract
Cryopreservation provides a critical tool for dairy herd genetics management. Due to widely varying inter- and within-bull post thaw fertility, recent research on cryoprotectant extender medium has not dramatically improved suboptimal post-thaw recovery in industry. This progress is stymied by the interactions between samples and the many components of extender media and is often compounded by industry irrelevant sample sizes. To address these challenges, here we demonstrate blank-slate optimization of bull sperm cryopreservation media by supervised machine learning. We considered two supervised learning models: artificial neural networks and Gaussian process regression (GPR). Eleven media components and initial concentrations were identified from publications in bull semen cryopreservation, and an initial 200 extender-post-thaw motility pairs were used to train and 32 extender-post-thaw motility pairs to test the machine learning algorithms. The median post-thaw motility after coupling differential evolution with GPR the increased from 52.6 ± 6.9% to 68.3 ± 6.0% at generations 7 and 17 respectively, with several media performing dramatically better than control media counterparts. This is the first study in which machine learning was used to determine the best combination of constituents to optimize bull sperm cryopreservation media, and provides a template for optimization in other cell types.
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Jeronimo Moreira SS, Maria da Silva A, Paz Souza AL, Gurgel Praxedes EC, Freire de Souza Junior JB, Pereira AF, Silva AR. Cryopreservation of Spix's yellow-toothed cavy epididymal sperm using Tris- and coconut water-based extenders supplemented with egg yolk or Aloe vera. Cryobiology 2021; 99:40-45. [PMID: 33508264 DOI: 10.1016/j.cryobiol.2021.01.016] [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: 09/29/2020] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 11/15/2022]
Abstract
Addressing the establishment of biobanks for the conservation of wild hystricomorph rodents' germplasm, we verified the effects of different extenders and distinct concentrations of non-permeant cryoprotectants on the sperm parameters of Spix's yellow-toothed cavies. Nine testis-epididymis complexes were used for sperm collection by retrograde washing using Tris or a powdered coconut water extender (ACP®-116c). Spermatozoa were diluted and frozen with the same extenders supplemented with egg yolk or Aloe vera at a 10% or 20% concentration. After recovery and cryopreservation, all samples were evaluated for sperm kinetic parameters, morphology, membrane integrity, osmotic response, and sperm-binding capability using an egg yolk perivitelline membrane assay. After recovery, no differences were observed between Tris and ACP®-116c that provided 515.4 × 106 sperm/mL and 561.6 × 106 sperm/mL, presenting >65% motile sperm, respectively. After cryopreservation, most effective preservation of sperm kinetic parameters (68.1 ± 5.9% motile sperm) and membrane integrity (48.2 ± 7.4%) was provided by Tris extender supplemented with 10% egg yolk. However, both extenders supplemented with any concentration of egg yolk or Aloe vera presented similar preservation of osmotic response and sperm-binding ability after cryopreservation. In summary, we suggest the use of a Tris extender supplemented of 10% egg yolk for cryopreservation of Spix's yellow-toothed cavy epidydimal sperm.
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Affiliation(s)
| | - Andreia Maria da Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil
| | - Ana Liza Paz Souza
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil
| | | | | | | | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil.
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6
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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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7
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Stuart CC, Vaughan JL, Kershaw CM, de Graaf SP, Bathgate R. Effect of diluent type, cryoprotectant concentration, storage method and freeze/thaw rates on the post-thaw quality and fertility of cryopreserved alpaca spermatozoa. Sci Rep 2019; 9:12826. [PMID: 31492923 PMCID: PMC6731240 DOI: 10.1038/s41598-019-49203-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 08/15/2019] [Indexed: 11/17/2022] Open
Abstract
This study compared protocols for cryopreservation of ejaculated, papain-treated alpaca spermatozoa. This included different concentrations of egg yolk (EY; 5, 10 or 15%) and glycerol (2, 5 or 10%), diluent types (SHOTOR, lactose, skim milk or INRA-96™), freeze rates (2, 4 or 8 cm above liquid nitrogen; LN), thaw rates (37 °C for 1 min or 42 °C for 20 sec) and storage vessels (pellets, 0.25 mL straws or 0.5 mL straws). Spermatozoa were assessed pre-freeze and 0, 30, 60 and 90 min post-thaw. Forty-one hembras were inseminated with either fresh, papain-treated or frozen-thawed spermatozoa. Motility was affected by EY concentration (P < 0.001), diluent type (P < 0.001), freeze rate (P = 0.003) and storage vessel (P = 0.001). Viability was affected by EY concentration (P < 0.001), diluent type (P < 0.001), storage vessel (P = 0.002) and thaw rate (P = 0.03). For artificial insemination (AI), semen was diluted 1:3 in a lactose-based diluent, with 5% EY and glycerol. Freezing was in 0.5 mL straws, 2 cm above LN for 4 min then thawing at 37 °C for 1 min. Pregnancy rates of those ovulated (n = 26) were not different (1/5 fresh, 1/4 papain-treated, 0/17 frozen-thawed; P = 0.10). Pregnancy can be achieved after AI with papain-treated spermatozoa. Further work is needed to determine the optimal dose, timing and location for insemination.
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Affiliation(s)
- C C Stuart
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia.
| | - J L Vaughan
- Cria Genesis, PO Box 406, Ocean Grove, VIC 3226, Australia
| | - C M Kershaw
- Department of Animal Production, Welfare and Veterinary Sciences, Harper Adams University, Shropshire, UK
| | - S P de Graaf
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
| | - R Bathgate
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
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8
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Kratochvílová I, Kopečná O, Bačíková A, Pagáčová E, Falková I, Follett SE, Elliott KW, Varga K, Golan M, Falk M. Changes in Cryopreserved Cell Nuclei Serve as Indicators of Processes during Freezing and Thawing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7496-7508. [PMID: 30339402 DOI: 10.1021/acs.langmuir.8b02742] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The mechanisms underlying cell protection from cryoinjury are not yet fully understood. Recent biological studies have addressed cryopreserved cell survival but have not correlated the cryoprotection effectiveness with the impact of cryoprotectants on the most important cell structure, the nucleus, and the freeze/thaw process. We identified changes of cell nuclei states caused by different types of cryoprotectants and associate them with alterations of the freeze/thaw process in cells. Namely, we investigated both higher-order chromatin structure and nuclear envelope integrity as possible markers of freezing and thawing processes. Moreover, we analyzed in detail the relationship between nuclear envelope integrity, chromatin condensation, freeze/thaw processes in cells, and cryopreservation efficiency for dimethyl sulfoxide, glycerol, trehalose, and antifreeze protein. Our interdisciplinary study reveals how changes in cell nuclei induced by cryoprotectants affect the ability of cells to withstand freezing and thawing and how nuclei changes correlate with processes during freezing and thawing. Our results contribute to the deeper fundamental understanding of the freezing processes, notably in the cell nucleus, which will expand the applications and lead to the rational design of cryoprotective materials and protocols.
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Affiliation(s)
- Irena Kratochvílová
- Institute of Physics, v.v.i. , Czech Academy of Sciences , Na Slovance 2 , CZ-182 21 Prague 8 , Czech Republic
| | - Olga Kopečná
- Institute of Biophysics, v.v.i. , Czech Academy of Sciences , Královopolská 135 , CZ-612 65 Brno , Czech Republic
| | - Alena Bačíková
- Institute of Biophysics, v.v.i. , Czech Academy of Sciences , Královopolská 135 , CZ-612 65 Brno , Czech Republic
| | - Eva Pagáčová
- Institute of Biophysics, v.v.i. , Czech Academy of Sciences , Královopolská 135 , CZ-612 65 Brno , Czech Republic
| | - Iva Falková
- Institute of Biophysics, v.v.i. , Czech Academy of Sciences , Královopolská 135 , CZ-612 65 Brno , Czech Republic
| | - Shelby E Follett
- Department of Chemistry , University of Wyoming , 1000 E. University Avenue , Laramie , Wyoming 82071 , United States
| | - K Wade Elliott
- Department of Molecular, Cellular, and Biomedical Sciences , University of New Hampshire , 46 College Road , Durham , New Hampshire 03824 , United States
| | - Krisztina Varga
- Department of Molecular, Cellular, and Biomedical Sciences , University of New Hampshire , 46 College Road , Durham , New Hampshire 03824 , United States
| | - Martin Golan
- Institute of Physics, v.v.i. , Czech Academy of Sciences , Na Slovance 2 , CZ-182 21 Prague 8 , Czech Republic
| | - Martin Falk
- Institute of Biophysics, v.v.i. , Czech Academy of Sciences , Královopolská 135 , CZ-612 65 Brno , Czech Republic
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Valverde A, Areán H, Fernández A, Bompart D, García-Molina A, López-Viana J, Soler C. Combined effect of type and capture area of counting chamber and diluent on Holstein bull sperm kinematics. Andrologia 2018; 51:e13223. [PMID: 30588646 DOI: 10.1111/and.13223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 11/28/2022] Open
Abstract
The evaluation of sperm motion is crucial for processing of seminal doses for artificial insemination. Here, the combined effect of the type and capture area of three counting chambers, together with the type of diluent employed, on sperm motility was analysed. Ejaculates from thirteen Holstein bulls were used for sperm kinematic analysis with the ISAS® v1 CASA-Mot system, using two capillary-loaded counting chambers (Leja® and Cell-Vu® ) and one drop displacement chamber (Makler® ). Nine fixed positions were analysed per chamber type, considering central and lateral and three longitudinal fields. Independent of the diluent used, differences were found between the three chambers. Independent of the extender, no differences in x-axis were observed with Cell-Vu® , while using Leja® , some parameters showed lower values in the centre than in lateral areas. In both counting chambers, the lowest values were observed in the distal area. Results obtained with the two diluents were highly different with a very low correlation between them. In conclusion, the capture area inside the chambers leads to significant changes in sperm kinematic parameters and different dilution media introduce considerable differences in the motility patterns. It is necessary to optimise sampling methods and specific set-ups to be used with CASA-Mot technology.
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Affiliation(s)
- Anthony Valverde
- Costa Rica Institute of Technology, School of Agronomy, Alajuela, Costa Rica.,Departament de Biologia Cellular, Biologia Funcional i Antropologia Física, Universitat de València, Burjassot, Spain
| | | | | | - Daznia Bompart
- R+D Department, Projectes i Serveis R+D, S.L., Science Park of the València University, Paterna, Spain
| | - Almudena García-Molina
- R+D Department, Projectes i Serveis R+D, S.L., Science Park of the València University, Paterna, Spain
| | | | - Carles Soler
- Departament de Biologia Cellular, Biologia Funcional i Antropologia Física, Universitat de València, Burjassot, Spain.,R+D Department, Projectes i Serveis R+D, S.L., Science Park of the València University, Paterna, Spain
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10
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Chuawongboon P, Sirisathien S, Pongpeng J, Sakhong D, Nagai T, Vongpralub T. Effects of supplementation of iodixanol to semen extender on quality and fertilization ability of frozen-thawed Thai native bull sperm. Anim Sci J 2017; 88:1311-1320. [PMID: 28370846 DOI: 10.1111/asj.12798] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 01/11/2017] [Indexed: 11/30/2022]
Abstract
This study investigates the effects of iodixanol supplementation in varied concentrations to Tris egg yolk (TEY) extender on the quality and fertilization ability of frozen-thawed sperm of Thai native bulls. Each ejaculate was divided into four different groups, as follows: sperm were treated with TEY extender (control group) and TEY extender supplemented with three different concentrations of iodixanol (1.25%, 2.50% and 5.00%). Semen straws were frozen in liquid nitrogen vapor. After thawing, sperm motility characteristics, viability, plasma membrane integrity and acrosome integrity were determined. Also, frozen-thawed spermatozoa from all groups were used for in vitro fertilization and artificial insemination (AI) in natural estrus Thai native cows. The results showed that the post-thaw quality of the 2.50% iodixanol group was superior to the other iodixanol groups (P < 0.05). However, iodixanol had no beneficial effect on post-thaw sperm in vitro fertilization ability and pregnancy rate after AI (P > 0.05). It can be concluded that the supplementation of 2.50% iodixanol extender significantly improves the progressive motility, viability, plasma membrane integrity and acrosome integrity of cryopreserved semen from Thai native bulls, but it has no beneficial effect on in vitro fertilization ability and pregnancy rate after AI.
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Affiliation(s)
- Phirawit Chuawongboon
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Saksiri Sirisathien
- Department of Surgery and Theriogenology, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Jatuporn Pongpeng
- Department of Livestock Development, Bureau of Biotechnology in Livestock Production, Bangkok, Thailand
| | - Denpong Sakhong
- Department of Livestock Development, Veterinary Research and Development Center (Upper Northeastern Region), Khon Kaen, Thailand
| | - Takashi Nagai
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan.,Food and Fertilizer Technology Center, Taipei, Taiwan
| | - Thevin Vongpralub
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
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11
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Malo C, Crichton EG, Skidmore JA. Optimization of the cryopreservation of dromedary camel semen: Cryoprotectants and their concentration and equilibration times. Cryobiology 2016; 74:141-147. [PMID: 27818266 DOI: 10.1016/j.cryobiol.2016.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 01/13/2023]
Abstract
Research into an optimal cryoprotectant, its concentration and equilibration time underlies the successful cryopreservation of dromedary camel spermatozoa. This study assessed the cryo-efficiency of different cryoprotectants, their concentration and equilibration time and any interactions. In experiment 1, semen samples (n = 4 males; 2 ejaculates/male) were frozen using Green Buffer containing one of four cryoprotectants (3% glycerol, ethylene glycol, methyl formamide, dimethyl sulfoxide) and using 4 equilibration times (10 min, 0.5, 1 and 2 h). Glycerol and ethylene glycol provided the best motility recovery rates and different equilibration times were not significant for any cryoprotectant nor were any interactions noted. However different equilibration times were pertinent for improved kinematic parameters BCF and VSL. In experiment 2, glycerol and ethylene glycol were evaluated at 4 concentrations (1.5, 3, 6, 9%) with 0.5 h equilibration (n = 4 males, 3 ejaculates/male). Sperm motility recoveries, kinematics and acrosome status were assessed. Higher values for LIN and STR were found with ethylene glycol. At 0 and 1 h post thaw 3 and 6% of either cryoprotectant resulted in better motility values than 1.5%. Acrosome integrity was compromised at 9% cryoprotectant. There were interactions between cryoprotectant and concentration in total motility at 0 and 1 h. For glycerol, total motility recoveries were best at 3-9%; for ethylene glycol 1.5-6% were best at 0 h and 3-6% at 1 h. In conclusion, 3-6% glycerol or ethylene glycol offered the best cryoprotection for camel sperm while different equilibration times were not critical.
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Affiliation(s)
- Clara Malo
- Camel Reproduction Centre, PO Box 79914, Dubai, United Arab Emirates.
| | | | - Julian A Skidmore
- Camel Reproduction Centre, PO Box 79914, Dubai, United Arab Emirates
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12
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The characterisation and cryopreservation of Venda chicken semen. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2016. [DOI: 10.1016/j.apjr.2016.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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Metabolic activity of sperm cells: correlation with sperm cell concentration, viability and motility in the rabbit. ZYGOTE 2016; 24:707-13. [PMID: 26964875 DOI: 10.1017/s0967199415000726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The resazurin reduction test (RRT) is a useful technique to assess the metabolic rate of sperm cells. RRT depends on the ability of metabolically active cells to reduce the non-fluorescent dye resazurin to the fluorescent resorufin. The aim of this study was to develop a vital fluorometric method to evaluate metabolic activity of rabbit sperm cells. Twenty-five rabbit males were included in the study. Viability and morphology, motility and metabolic activity were evaluated using an eosin-nigrosin staining, a computer-assisted semen analysis (CASA) and the RRT, respectively. Spearman rank correlation analysis was used to determine the correlation between RRT and semen parameters. After evaluation, a concentration of 10 × 106 sperm cells/ml was selected for further experiments with RRT. No significant correlation was found between the RRT results and the motility parameters. However, after RRT a significant positive correlation between relative fluorescence units and the percentage of alive spermatozoa (r = 0.62; P = 0.001) and a negative one with the percentage of sperm cells with acrosomic abnormalities (r = -0.45; P < 0.05) were detected. The vital assessment of metabolic rate of sperm cells by RRT could provide more information about semen quality than other routine semen analysis, correlating with sperm viability and acrosome status information.
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Alcay S, Ustuner B, Nur Z. Effects of low molecular weight cryoprotectants on the post-thaw ram sperm quality and fertilizing ability. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Elsayed M, El-Sherry TM, Abdelgawad M. Development of computer-assisted sperm analysis plugin for analyzing sperm motion in microfluidic environments using Image-J. Theriogenology 2015; 84:1367-77. [DOI: 10.1016/j.theriogenology.2015.07.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 07/10/2015] [Accepted: 07/12/2015] [Indexed: 11/16/2022]
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16
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Cheuquemán C, Arias ME, Risopatrón J, Felmer R, Álvarez J, Mogas T, Sánchez R. Supplementation of IVF medium with melatonin: effect on sperm functionality andin vitroproduced bovine embryos. Andrologia 2014; 47:604-15. [DOI: 10.1111/and.12308] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2014] [Indexed: 12/15/2022] Open
Affiliation(s)
- C. Cheuquemán
- Centro de Biotecnología de la Reproducción (BIOREN-CEBIOR); Facultad de Medicina; Universidad de La Frontera; Temuco Chile
| | - M. E. Arias
- Centro de Biotecnología de la Reproducción (BIOREN-CEBIOR); Facultad de Medicina; Universidad de La Frontera; Temuco Chile
| | - J. Risopatrón
- Centro de Biotecnología de la Reproducción (BIOREN-CEBIOR); Facultad de Medicina; Universidad de La Frontera; Temuco Chile
- Departamento de Ciencias Básicas; Universidad de La Frontera; Temuco Chile
| | - R. Felmer
- Centro de Biotecnología de la Reproducción (BIOREN-CEBIOR); Facultad de Medicina; Universidad de La Frontera; Temuco Chile
- Departamento de Ciencias Básicas; Universidad de La Frontera; Temuco Chile
- Departamento de Ciencias Agronómicas y Recursos Naturales; Facultad de Ciencias Agropecuarias y Forestales; Universidad de La Frontera; Temuco Chile
| | | | - T. Mogas
- Departamento de Medicina i Cirurgia Animals; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - R. Sánchez
- Centro de Biotecnología de la Reproducción (BIOREN-CEBIOR); Facultad de Medicina; Universidad de La Frontera; Temuco Chile
- Departamento de Ciencias Preclínicas; Facultad de Medicina; Universidad de La Frontera; Temuco Chile
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Taşdemir U, Büyükleblebici S, Tuncer PB, Coşkun E, Özgürtaş T, Aydın FN, Büyükleblebici O, Gürcan İS. Effects of various cryoprotectants on bull sperm quality, DNA integrity and oxidative stress parameters. Cryobiology 2013; 66:38-42. [DOI: 10.1016/j.cryobiol.2012.10.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 10/25/2012] [Accepted: 10/25/2012] [Indexed: 11/28/2022]
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18
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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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19
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Awad M. Effects of sub-optimal glycerol concentration and cholesterol-loaded cyclodextrin in a Tris-based diluent on cryopreserved ram sperm longevity and acrosomal integrity. Small Rumin Res 2011. [DOI: 10.1016/j.smallrumres.2011.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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