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Halo M, Tirpák F, Slanina T, Tokárová K, Massányi M, Dianová L, Mlyneková E, Greń A, Halo M, Massányi P. A Combination of Taurine and Caffeine in Stallion Semen Extender Positively Affects the Spermatozoa Parameters. Cells 2023; 12:cells12020320. [PMID: 36672253 PMCID: PMC9856288 DOI: 10.3390/cells12020320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 01/18/2023] Open
Abstract
This study was aimed to determine the impact of different taurine and caffeine combinations on the motility, viability, and oxidative markers of chilled stallion spermatozoa. Each stallion semen sample was diluted in a ratio of 1:2, with various taurine and caffeine concentrations (2.5-7.5 mg/mL taurine + 0.625-1.25 mg/mL caffeine) dissolved in a conventional extender. The control samples (CON) were prepared by diluting ejaculate only using the conventional extender. The motility was analyzed using a CASA system at different time intervals (0, 6, 12, 24, and 30 h) and the viability was evaluated using a mitochondrial toxicity test (MTT) performed at the end of the incubation at 5 °C. The liquid part of experimental samples was separated by centrifugation after 30 h of incubation and underwent the evaluation of oxidative stress via the quantification of markers ferric reducing ability of plasma (FRAP) and total oxidant status (TOS). The samples that were treated with a combination of taurine and caffeine significantly improved the motility parameters, mainly after 12, 24, and 30 h of incubation. Samples extended with combination of taurine and caffeine neither compromise viability nor alterations of redox status. The results of this study describe the combination of taurine and caffeine as an optimal supplement for improving the quality of stallion semen during chilled storage.
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Affiliation(s)
- Marko Halo
- Institute of Applied Biology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
- Correspondence:
| | - Filip Tirpák
- AgroBioTech, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Tomáš Slanina
- Institute of Applied Biology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Katarína Tokárová
- Institute of Applied Biology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Martin Massányi
- AgroBioTech, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Lucia Dianová
- Institute of Applied Biology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Eva Mlyneková
- Institute of Animal Husbandry, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Agnieszka Greń
- Institute of Biology, Pedagogical University of Krakow, Podchorazych 2, 30-084 Krakow, Poland
| | - Marko Halo
- Institute of Animal Husbandry, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Peter Massányi
- Institute of Applied Biology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
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Luño V, González N, Martínez F, González B, Olaciregui M, Gil L. Specific phosphodiesterase type-10 inhibitor, papaverine, added after the cooling period improves canine sperm quality. Anim Biotechnol 2020; 33:519-525. [PMID: 32876515 DOI: 10.1080/10495398.2020.1811714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The use of chilled semen has gained increasing interest in canine reproductive services. The addition of phosphodiesterase (PDE) inhibitors that increase the intracellular cyclic adenosine monophosphate levels may improve sperm motility. The purpose of this study was to examine the quality of sperm under the effect of the specific PDE-10 inhibitor (papaverine) added after storage for 1, 2, and 3 days at 5 °C. The ejaculates were obtained from 5 healthy Beagle dogs by digital manipulation. After collection, ejaculates were pooled, extended and cooled at 5 °C during 3 days. Sperm parameters were tested 30 min after the addition of different papaverine (PA) concentrations: 0, 5, 10 and 20 µM. Sperm motility (CASA), viability (PI/FITC-PNA) and capacitation status (chlortetracycline assay) were evaluated. The results showed that the addition of PA has no effect on sperm samples at day 0. However, concentrations of 5 and 10 µM increased (p < .05) sperm motility kinetics and viability significantly compared to the control at day 1, day 2 and day 3 of cooling. The addition of 20 μM PA decreased (p < .05) sperm quality parameters significantly and increased the percentage of capacitated/acrosome-reacted spermatozoa. In conclusion, the addition of 5 and 10 μM PA concentrations after cooled storage improved canine sperm quality.
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Affiliation(s)
- Victoria Luño
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Noelia González
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Felisa Martínez
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Beatriz González
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Maite Olaciregui
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Lydia Gil
- Departament of Animal Pathology, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
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Castagnoli E, Salo J, Toivonen MS, Marik T, Mikkola R, Kredics L, Vicente-Carrillo A, Nagy S, Andersson MT, Andersson MA, Kurnitski J, Salonen H. An Evaluation of Boar Spermatozoa as a Biosensor for the Detection of Sublethal and Lethal Toxicity. Toxins (Basel) 2018; 10:toxins10110463. [PMID: 30413106 PMCID: PMC6265928 DOI: 10.3390/toxins10110463] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/20/2018] [Accepted: 11/05/2018] [Indexed: 01/09/2023] Open
Abstract
A novel, objective, and rapid computed motility inhibition (CMI) assay was developed to identify and assess sublethal injury in toxin-exposed boar spermatozoa and compared with a subjective visual motility inhibition (VMI) assay. The CMI values were calculated from digital micrographic videos using a custom MATLAB® script by contrasting the motility index values of each experiment with those of the background and control experiments. Following a comparison of the CMI and VMI assays results, it was determined that their agreement depended on the shape of the dose-response curve. Toxins that exhibited a steep slope were indicative of good agreement between the assays. Those depicted by a gentle decline in the slope of the dose-response curve, the CMI assay were shown to be two times more sensitive than the VMI assay. The CMI assay was highly sensitive to the inhibition of mitochondrial function and glucose transport activity by sublethal doses of toxins and to disruption of cellular cation homeostasis by carrier ionophoric toxins, when compared to the cytotoxicity and lethal toxicity assays (i.e., that evaluated the inhibition of cell proliferation in somatic cell lines (FL, PK-15, and MNA cells)) and disruption to spermatozoa membrane integrity. The CMI assay recognized subtle sublethal toxicity changes in metabolism, manifested as a decrease in boar spermatozoa motility. Thus, it was feasible to effectively compare the objectively-measured numerical values for motility inhibition using the CMI assay against those reflecting lethal damage in the spermatozoa cells and somatic cell lines using a cytotoxicity assay.
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Affiliation(s)
- Emmanuelle Castagnoli
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
| | - Johanna Salo
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
| | - Matti S Toivonen
- Department of Applied Physics, Aalto University, Puumiehenkuja 2, 02150 Espoo, Finland.
| | - Tamás Marik
- Faculty of Science and Informatics, Department of Microbiology, University of Szeged, Közép Fasor 52, H-6726 Szeged, Hungary.
| | - Raimo Mikkola
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
| | - László Kredics
- Faculty of Science and Informatics, Department of Microbiology, University of Szeged, Közép Fasor 52, H-6726 Szeged, Hungary.
| | | | - Szabolcs Nagy
- Georgikon Faculty, Department of Animal Sciences, University of Pannonia, Deak F. u. 16, H-8360 Keszthely, Hungary.
| | | | - Maria A Andersson
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
| | - Jarek Kurnitski
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
- Department of Civil Engineering and Architecture, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
| | - Heidi Salonen
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4, 02150 Espoo, Finland.
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GOEL P, GOEL AK, BHATIA AK, KHARCHE SD. Effect of capacitating agents on sperm pretreatment during in vitrofertilization for blastocyst production in caprines. TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES 2016. [DOI: 10.3906/vet-1509-49] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Evaluation of the acrosomal status in Lama glama sperm incubated with acrosome reaction inducers. Anim Reprod Sci 2015; 160:1-11. [DOI: 10.1016/j.anireprosci.2015.06.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 06/15/2015] [Accepted: 06/21/2015] [Indexed: 11/23/2022]
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6
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Comparison of different methods of goat sperm selection and capacitation for optimization of assisted reproductive technologies. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Alvarez GM, Morado SA, Soto MP, Dalvit GC, Cetica PD. The control of reactive oxygen species influences porcine oocyte in vitro maturation. Reprod Domest Anim 2014; 50:200-205. [PMID: 25522082 DOI: 10.1111/rda.12469] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 11/24/2014] [Indexed: 01/03/2023]
Abstract
The aim of this study was to examine the effect of varying intracellular reactive oxygen species (ROS) levels during oocyte in vitro maturation with enzymatic ROS production systems (xanthine + xanthine oxidase or xanthine + xanthine oxidase + catalase), scavenger systems (catalase or superoxide dismutase + catalase) or cysteine on porcine oocyte maturation. Oocyte ROS levels showed an increase when H2O2 or O2∙(-) production systems were added to the culture medium (p < 0.05). On the other hand, the presence of ROS scavengers in the maturation medium did not modify oocyte ROS levels compared with the control after 48 h of maturation, but the addition of cysteine induced a decrease in oocyte ROS levels (p < 0.05). The ROS production systems used in this work did not modified the percentage of oocyte nuclear maturation, but increased the decondensation of sperm head (p < 0.05) and decreased the pronuclear formation (p < 0.05). In turn, the addition of O2∙(-) and H2O2 scavenging systems during in vitro maturation did not modify the percentage of oocytes reaching metaphase II nor the oocytes with decondensed sperm head or pronuclei after fertilization. However, both parameters increased in the presence of cysteine (p < 0.05). The exogenous generation of O2∙(-) and H2O2 during oocyte in vitro maturation would not affect nuclear maturation or later sperm penetration, but most of the spermatozoa cannot progress to form the pronuclei after fusion with the oocyte. The decrease in endogenous ROS levels by the addition of cysteine would improve pronuclear formation after sperm penetration.
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Affiliation(s)
- G M Alvarez
- Area of Biochemistry, INITRA (Institute of Research and Technology in Animal Reproduction), Executing Unit INPA (Research in Animal Production) UBA-CONICET, School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, Argentina
| | - S A Morado
- Area of Biochemistry, INITRA (Institute of Research and Technology in Animal Reproduction), Executing Unit INPA (Research in Animal Production) UBA-CONICET, School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, Argentina
| | - M P Soto
- Area of Biochemistry, INITRA (Institute of Research and Technology in Animal Reproduction), Executing Unit INPA (Research in Animal Production) UBA-CONICET, School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, Argentina
| | - G C Dalvit
- Area of Biochemistry, INITRA (Institute of Research and Technology in Animal Reproduction), Executing Unit INPA (Research in Animal Production) UBA-CONICET, School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, Argentina
| | - P D Cetica
- Area of Biochemistry, INITRA (Institute of Research and Technology in Animal Reproduction), Executing Unit INPA (Research in Animal Production) UBA-CONICET, School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, Argentina
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8
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Rečková Z, Machatková M, Rybář R, Máchal L. Monitoring of chromatin integrity changes in the population of motile bovine sperm capacitated in vitro. ACTA UNIVERSITATIS AGRICULTURAE ET SILVICULTURAE MENDELIANAE BRUNENSIS 2014. [DOI: 10.11118/actaun200755020065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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9
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Tellado MN, Alvarez GM, Dalvit GC, Cetica PD. The Conditions of Ovary Storage Affect the Quality of Porcine Oocytes. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/arsci.2014.23007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Alvarez GM, Dalvit GC, Cetica PD. Influence of the Cumulus and Gonadotropins on the Metabolic Profile of Porcine Cumulus-Oocyte Complexes During In Vitro Maturation. Reprod Domest Anim 2012; 47:856-64. [DOI: 10.1111/j.1439-0531.2011.01943.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Abstract
SummaryThe technique of sperm-mediated gene transfer (SMGT) can be used to delivery exogenous DNA into the oocyte. However, it has low repeatability and produces inconsistent results. In order to optimize this technique, it is necessary to study the mechanism by which DNA enters the sperm cell and integrates in the sperm genome. Furthermore, studies must focus in the maintenance of sperm cell viability and function. The aim of this study was to evaluate different SMGT protocols of sperm electroporation or capacitation (CaI) aiming to maintain sperm viability in the production of bovine embryos in vitro. Frozen–thawed semen was divided in two experimental groups (electroporation or CaI) and one control group (non-treated cells). For the electroporation method, five different voltages (100, 500, 750, 1000 or 1500 V) with 25 μF capacitance were used. For CaI treatment, combinations of two CaI concentrations (250 nM or 500 nM), two incubation periods of sperm cells with CaI (1 or 5 min) and two incubation periods that mimicked time of sperm cell interaction with exogenous DNA molecules (1 or 2 h) were evaluated. According to our data, electroporation and CaI treatments do not prevent sperm penetration and oocyte fertilization and can be an alternative method to achieve satisfactory DNA delivery in SMGT protocols.
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12
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Arzondo MM, Caballero JN, Marín-Briggiler CI, Dalvit G, Cetica PD, Vazquez-Levin MH. Glass wool filtration of bull cryopreserved semen: a rapid and effective method to obtain a high percentage of functional sperm. Theriogenology 2012; 78:201-9. [PMID: 22537998 DOI: 10.1016/j.theriogenology.2012.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 01/31/2012] [Accepted: 02/05/2012] [Indexed: 10/28/2022]
Abstract
Frozen-thawed bull sperm are widely used in assisted reproductive technologies, but cryopreservation negatively affects semen quality. Several sperm selection techniques have been developed to separate motile sperm from non-motile cells. The aim of the present study was to evaluate the effectiveness of the glass wool column filtration to select functional sperm from frozen-thawed bull semen samples. Frozen semen from six Holstein bulls was thawed and filtered through a glass wool column, followed by assessment of routine and functional sperm parameters. In a set of experiments, sperm aliquots were also processed by swim up to compare both selection methods. Samples recovered in the glass wool filtrate had high percentages of viable (94 ± 3%, mean ± SD), progressively motile (89 ± 4%), acrosome-intact (98 ± 1%), and non-capacitated (80 ± 10%) sperm; these values were higher (P < 0.05) than those obtained after performing the swim up procedure. Moreover, the glass wool filtration yielded 67 ± 19% motile cells, in comparison with 18 ± 8% obtained with swim up (P < 0.05), calculated as the concentration of progressively motile cells selected relative to their concentration in the sample before the selection procedure. Glass wool-filtered sperm were able to undergo capacitation-related events, based on the increase in the percentage of cells classified as capacitated by CTC staining (B-pattern) after incubation with heparin (50 ± 5%) in comparison with control conditions with no heparin (17 ± 4%) or heparin + glucose (16 ± 2%; P < 0.05). Moreover, they underwent acrosomal exocytosis in response to pharmacologic (calcium ionophore A23187 and lysophosphatidylcholine) and physiological (follicular fluid) stimuli, and they fertilized in vitro matured cumulus-oocyte complexes and denuded oocytes (two-cell embryos: 72 ± 4% and 52 ± 6%, respectively). We conclude that glass wool filtration is a low-cost, simple, and highly effective procedure to select functionally competent sperm for reproductive technologies in the bull, which may be useful for other domestic and farm animals, as well as for endangered species.
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Affiliation(s)
- M M Arzondo
- Instituto de Biología y Medicinal Experimental (IBYME), National Research Council of Argentina (CONICET), University of Buenos Aires, Buenos Aires, Argentina
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13
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Apoptosis-like change, ROS, and DNA status in cryopreserved canine sperm recovered by glass wool filtration and Percoll gradient centrifugation techniques. Anim Reprod Sci 2010; 119:106-14. [DOI: 10.1016/j.anireprosci.2009.11.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 10/27/2009] [Accepted: 11/02/2009] [Indexed: 11/18/2022]
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14
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Abstract
SummaryThe efficiency of in vitro embryo production is highly variable amongst individual sires in cattle. To eliminate that this variability is not caused by sperm chromatin damage caused by separation or capacitacion, chromatin integrity was evaluated. Seventeen of AI bulls with good NRRs but variable embryo production efficiency were used. For each bull, motile spermatozoa were separated on a Percoll gradient, resuspended in IVF–TALP medium and capacitated with or incubated without heparin for 6 h. Samples before and after separation and after 3-h and 6-h capacitacion or incubation were evaluated by the Sperm Chromatin Structure Assay (SCSA) and the proportion of sperm with intact chromatin structure was calculated. Based on changes in the non-DFI-sperm proportion, the sires were categorized as DNA-unstable (DNA-us), DNA-stable (DNA-s) and DNA-most stable (DNA-ms) bulls (n = 3, n = 5 and n = 9, respectively). In DNA-us bulls, separation produced a significant increase of the mean non-DFI-sperm proportion (p ≤ 0.01), as compared with the value before separation. Capacitacion produced a significant decrease in the mean non-DFI-sperm proportion in H+ sperm (p ≤ 0.01). In DNA-s bulls, separation significantly increased the mean non-DFI-sperm proportion (p ≤ 0.01) but during capacitacion, the mean non-DFI-sperm proportion remained almost unchanged. In DNA-ms bulls, neither separation nor capacitacion had any effect on the mean non-DFI-sperm proportion. It can be concluded that, although separation and capacitacion may produce some changes in sperm chromatin integrity, these are not associated with different in vitro fertility of the bulls involved.
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15
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CHOI YJ, UHM SJ, SONG SJ, SONG H, PARK JK, KIM T, PARK C, KIM JH. Cytochrome c Upregulation during Capacitation and Spontaneous Acrosome Reaction Determines the Fate of Pig Sperm Cells: Linking Proteome Analysis. J Reprod Dev 2008; 54:68-83. [DOI: 10.1262/jrd.19116] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yun-Jung CHOI
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Sang-Jun UHM
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Sang-Jin SONG
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Hyuk SONG
- Department of Animal Science, College of Natural Science, Konkuk University
| | - Jin-Ki PARK
- Animal Biotechnology Division, National Livestock Research Institute, RDA
| | - Teoan KIM
- Department of Physiology, Catholic University of Daegu School of Medicine
| | - Chankyu PARK
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Jin-Hoi KIM
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
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Mehmood A, Anwar M, Saqlan Naqvi SM. Capacitation of Frozen Thawed Buffalo Bull (Bubalus bubalis) Spermatozoa with Higher Heparin Concentrations. Reprod Domest Anim 2007; 42:376-9. [PMID: 17635774 DOI: 10.1111/j.1439-0531.2006.00794.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The present study was conducted to examine the effect of high heparin concentration on capacitation of buffalo spermatozoa with a short incubation time. Frozen thawed spermatozoa from three buffalo bulls were pooled and treated with either 50, 100 or 200 microg/ml heparin for 30 min. Capacitation was evaluated by acrosome reaction of spermatozoa and in vitro fertilization rate (per cent cleavage rate, per cent cleavage index). Acrosome reaction was induced in heparin treated spermatozoa with calcium ionophore A23187 and staining was carried out with Coomassie G-250 to evaluate the response as compared with control (0 heparin + calcium ionophore). Significantly higher percentage of acrosome reaction (AR) spermatozoa was noted after heparin treatment (36.8-48.2%) as compared with control (8.1% ; p < 0.05) but differences among the three heparin concentrations were non-significant. However, a significantly higher in vitro fertilization rate was recorded in spermatozoa capacitated by 50 and 100 microg/ml heparin (80.4 and 75.9% cleavage rate, respectively) as compared with 200 microg/ml heparin (47.2% cleavage rate; p < 0.001). It is concluded that buffalo spermatozoa capacitated with 50-100 microg/ml heparin had significantly higher ability to improve in vitro fertilization rate in buffalo.
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Affiliation(s)
- A Mehmood
- Animal Sciences Institute, National Agricultural Research Centre, Islamabad, Pakistan.
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17
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Kitiyanant Y, Chaisalee B, Pavasuthipaisit K. Evaluation of the acrosome reaction and viability in buffalo spermatozoa using two staining methods: the effects of heparin and calcium ionophore A23187. INTERNATIONAL JOURNAL OF ANDROLOGY 2002; 25:215-22. [PMID: 12121571 DOI: 10.1046/j.1365-2605.2002.00350.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In this study, we investigated the effect of heparin and calcium ionophore A23187 on in vitro induction of buffalo sperm acrosome reaction (AR). Two methods for detection of the AR and viability were employed. Fluorescein isothiocyanate-conjugated Arachis hypogea agglutinin (FITC-PNA) was used as a vital stain in combination with ethidium homodimer-1 (EthD-1) to determine the acrosome status of viable spermatozoa. In another experiment, trypan blue replaced EthD-1 to differentiate live and dead spermatozoa having undergone AR. The results from the two methods were significantly correlated (r > 0.9). Four different staining patterns were found in both methods. The FITC-PNA intensely labels the acrosome region of acrosome-intact spermatozoa. EthD-1 and trypan blue stained red and blue at the post-acrosomal region of dead spermatozoa, respectively. Spermatozoa incubated with heparin showed a significant increase ( p < 0.05) in the percentage of live acrosome-reacted sperm after 30 min incubation period. This trend continued and was significantly different over the entire incubation period when compared with the control group at the same interval. In the ionophore-treated group, the proportion of changes in live acrosome-intact and live acrosome-reacted spermatozoa was statistically significantly different ( p < 0.001) when compared with those treated with heparin at the same interval. The AR occurred sooner and to a greater extent when incubated with the ionophore but at 5 h of incubation the percentage of false acrosomal reaction was significantly higher than those in the control and heparin-treated groups. The results in this study indicated that the in vitro induction of AR by heparin and calcium ionophore evaluated by both methods could be used to assess sperm fertilizing capacity for in vitro fertilization of this species.
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Affiliation(s)
- Y Kitiyanant
- Department of Anatomy, Faculty of Science, Institute of Science and Technology for Research and Development, Mahidol University, Nakhon Pathom, Thailand.
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18
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HAMANO KI, SASAKI K, MASAKI J, KANG MS, SASADA H, SATO E, TSUJII H. Effect of Maitotoxin on the Acrosome Reaction in Bull Spermatozoa. J Reprod Dev 2001. [DOI: 10.1262/jrd.47.295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | - Katsuhiko SASAKI
- Maebashi Institute of Animal Science, Livestock Improvement Association of Japan
| | - Junji MASAKI
- Maebashi Institute of Animal Science, Livestock Improvement Association of Japan
| | | | - Hiroshi SASADA
- Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
| | - Eimei SATO
- Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
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