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Tiwari S, Srivastava R, Kulkarni NA, Raval K, Patidar P, Fernandes A, Bhakat M, Mohanty TK. Filtration techniques are advantageous over colloidal centrifugation in improving freezability of low-quality buffalo bull ( Bubalus bubalis) ejaculates. Anim Biotechnol 2023; 34:2835-2845. [PMID: 36112062 DOI: 10.1080/10495398.2022.2121715] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The study compared efficacy of three sperm selection techniques in improving freezability of low-quality Murrah buffalo bull ejaculates. Sephadex (SEP), Sephadex ion-exchange filtration (SIE), and 40/80% BoviPure™ (BP) gradient centrifugation protocols were standardized (ejaculates, n = 24). In Experiment-I, Sephadex G-75, G-100, and combined Sephadex G (75-100) column filtrates were compared. In Experiment-II, BP protocols: 200 g-10 min, 250 g-5, and 10 min, 300 g-10, and 15 min were compared. In fresh semen, Sephadex G (75-100) filtration and 250 g-5 min BP protocol improved sperm functions and were used in Experiment-III, where SEP G (75-100), SIE G (75-100), and 250 g-5 min BP processed ejaculates (n = 48) were cryopreserved and compared at post-thaw stage. The mean recovery rate differed in order: SEP > SIE > BP. SIE filtration significantly improved progressive motility, livability, membrane integrity, bovine cervical mucus penetration and live non-apoptotic sperm. Compared with control, all three techniques equally reduced post-dilution and post-thaw lipid peroxidation (LPO) rate. SEP post-thaw filtrates observed lower cryocapacitation-like changes, LPO (C11-BODIPY581/591), and higher active mitochondria than other treatments. SIE and SEP equally improved post-thaw acrosome-intact sperm over BP. Filtration techniques, preferably, Sephadex ion-exchange filtration can most efficiently process low-quality buffalo bull ejaculates for cryopreservation and improve freezability.
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Affiliation(s)
- Saurabh Tiwari
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
| | - Rashika Srivastava
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
| | - Nitish Arun Kulkarni
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
| | - Kathan Raval
- LPM Division, Animal Reproduction, Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, India
| | - Prakash Patidar
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
| | - Abhijeet Fernandes
- LPM Division, Animal Reproduction, Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, India
| | - Mukesh Bhakat
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
| | - Tushar Kumar Mohanty
- LPM Division, Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, India
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Tiwari S, Dewry RK, Srivastava R, Nath S, Mohanty TK. Targeted antioxidant delivery modulates mitochondrial functions, ameliorates oxidative stress and preserve sperm quality during cryopreservation. Theriogenology 2021; 179:22-31. [PMID: 34823058 DOI: 10.1016/j.theriogenology.2021.11.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 02/07/2023]
Abstract
Mitochondria are vital organelles with a multifaceted role in cellular bioenergetics, biosynthesis, signaling and calcium homeostasis. During oxidative phosphorylation, sperm mitochondria generate reactive oxygen species (ROS) at physiological levels mediating signaling pathways essential for sperm fertilizing competence. Moreover, sperm subpopulation with active mitochondria is positively associated with sperm motility, chromatin and plasma membrane integrity, and normal morphology. However, the osmotic and thermal stress, and intracellular ice crystal formation generate excess ROS to cause mitochondrial dysfunction, potentiating cryoprotectant-induced calcium overload in the mitochondrial matrix. It further stimulates the opening of mitochondrial permeability transition pores (mPTP) to release pro-apoptotic factors from mitochondria and initiate apoptotic cascade, with a decrease in Mitochondrial Membrane Potential (MMP) and altered sperm functions. To improve the male reproductive potential, it is essential to address challenges in semen cryopreservation, precisely the deleterious effects of oxidative stress on sperm quality. During semen cryopreservation, the supplementation of extended semen with conventional antioxidants is extensively reported. However, the outcomes of supplementation to improve semen quality are inconclusive across different species, which is chiefly attributed to the unknown bioavailability of antioxidants at the primary site of ROS generation, i.e., mitochondria. Increasing evidence suggests that the targeted delivery of antioxidants to sperm mitochondria is superior in mitigating oxidative stress and improving semen freezability than conventional antioxidants. Therefore, the present review comprehensively describes mitochondrial-targeted antioxidants, their mechanism of action and effects of supplementation on improving semen cryopreservation efficiency in different species. Moreover, it also discusses the significance of active mitochondria in determining sperm fertilizing competence, cryopreservation-induced oxidative stress and mitochondrial dysfunction, and its implications on sperm fertility. The potential of mitochondrial-targeted antioxidants to modulate mitochondrial functions and improve semen quality has been reviewed extensively.
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Affiliation(s)
- Saurabh Tiwari
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India.
| | - R K Dewry
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Rashika Srivastava
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Sapna Nath
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - T K Mohanty
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
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Tiwari S, Mohanty TK, Bhakat M, Kumar N, Baithalu RK, Nath S, Yadav HP, Dewry RK. Comparative evidence support better antioxidant efficacy of mitochondrial-targeted (Mitoquinone) than cytosolic (Resveratrol) antioxidant in improving in-vitro sperm functions of cryopreserved buffalo (Bubalus bubalis) semen. Cryobiology 2021; 101:125-134. [PMID: 33933431 DOI: 10.1016/j.cryobiol.2021.04.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/06/2021] [Accepted: 04/23/2021] [Indexed: 12/12/2022]
Abstract
The present study compared the effect of mitochondria-targeted (Mitoquinone, MitoQ) and untargeted cytosolic antioxidant (Resveratrol, RESV) supplementation on lipid peroxidation (LPO) and in-vitro sperm functions of cryopreserved buffalo bull semen. To optimize additive's concentration, sperm pellet obtained from twenty-four ejaculates was supplemented with different concentrations of MitoQ (20 nM, 100 nM, 200 nM); and RESV (10 μM, 25 μM, 50 μM) against control in the extender. The post-thaw sperm motility, livability, and membrane integrity were higher (P < 0.05) in 200 nM MitoQ and 50 μM RESV than other concentrations used. In another experiment, sperm pellet from thirty-two ejaculates was supplemented with 200 nM MitoQ and 50 μM RESV in the extender. Pre-freeze and post-thaw progressive motility and livability were higher (P < 0.05) in MitoQ (200 nM) than RESV (50 μM) treatment. MitoQ supplementation improved post-thaw membrane integrity (CFDA-PI) higher (P < 0.05) than RESV, however, hypo-osmotic swelling response observed no improvement with RESV treatment. Post-thaw LPO rate was lower (P < 0.05) and Bovine cervical mucus penetration was higher (P < 0.05) in MitoQ than RESV treatment. In post-thaw semen, MitoQ showed higher (P < 0.05) proportion of acrosome intact (FITC-PNA), live non-apoptotic (P < 0.01) sperm with a higher reduction (P < 0.05) in membrane scrambling. MitoQ improved (P < 0.01) proportion of sperm with high Mitochondrial Membrane Potential and low LPO (P < 0.01) than RESV treatment. In conclusion, improvement in post-thaw in-vitro sperm functions and cryo-tolerance was more evident in MitoQ than RESV supplemented buffalo bull semen. Our study provides a better strategy to mitigate oxidative stress by enhancing mitochondrial antioxidant system with targeted antioxidants than cytosolic antioxidant supplementation.
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Affiliation(s)
- S Tiwari
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - T K Mohanty
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - M Bhakat
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - N Kumar
- Animal Reproduction, Gynaecology and Obstetrics, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - R K Baithalu
- Animal Reproduction, Gynaecology and Obstetrics, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - S Nath
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - H P Yadav
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
| | - R K Dewry
- Artificial Breeding Research Centre, LPM Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.
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Yániz J, Alquézar-Baeta C, Yagüe-Martínez J, Alastruey-Benedé J, Palacín I, Boryshpolets S, Kholodnyy V, Gadêlha H, Pérez-Pe R. Expanding the Limits of Computer-Assisted Sperm Analysis through the Development of Open Software. BIOLOGY 2020; 9:E207. [PMID: 32764457 PMCID: PMC7464510 DOI: 10.3390/biology9080207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/31/2020] [Accepted: 08/02/2020] [Indexed: 02/06/2023]
Abstract
Computer assisted sperm analysis (CASA) systems can reduce errors occurring in manual analysis. However, commercial CASA systems are frequently not applicable at the forefront of challenging research endeavors. The development of open source software may offer important solutions for researchers working in related areas. Here, we present an example of this, with the development of three new modules for the OpenCASA software (hosted at Github). The first is the Chemotactic Sperm Accumulation Module, a powerful tool for studying sperm chemotactic behavior, analyzing the sperm accumulation in the direct vicinity of the stimuli. This module was validated by comparing fish sperm accumulation, with or without the influence of an attractant. The analysis clearly indicated cell accumulation in the treatment group, while the distribution of sperm was random in the control group. The second is the Sperm Functionality Module, based on the ability to recognize five sperm subpopulations according to their fluorescence patterns associated with the plasma membrane and acrosomal status. The last module is the Sperm Concentration Module, which expands the utilities of OpenCASA. These last two modules were validated, using bull sperm, by comparing them with visual counting by an observer. A high level of correlation was achieved in almost all the data, and a good agreement between both methods was obtained. With these newly developed modules, OpenCASA is consolidated as a powerful free and open-source tool that allows different aspects of sperm quality to be evaluated, with many potential applications for researchers.
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Affiliation(s)
- Jesús Yániz
- BIOFITER Research Group, Higher Polytechnic School of Huesca, Institute of Environmental Sciences of Aragón (IUCA), University of Zaragoza, Ctra. Cuarte s/n, 22071 Huesca, Spain; (J.Y.); (I.P.)
| | - Carlos Alquézar-Baeta
- Department of Mathematics, Institute of Mathematics and Applications (IUMA), University of Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain;
| | - Jorge Yagüe-Martínez
- Department of Computer Science and Systems Engineering (DIIS), Aragón Institute for Engineering Research (I3A), Universidad de Zaragoza, María de Luna 3, 50018 Zaragoza, Spain; (J.Y.-M.); (J.A.-B.)
| | - Jesús Alastruey-Benedé
- Department of Computer Science and Systems Engineering (DIIS), Aragón Institute for Engineering Research (I3A), Universidad de Zaragoza, María de Luna 3, 50018 Zaragoza, Spain; (J.Y.-M.); (J.A.-B.)
| | - Inmaculada Palacín
- BIOFITER Research Group, Higher Polytechnic School of Huesca, Institute of Environmental Sciences of Aragón (IUCA), University of Zaragoza, Ctra. Cuarte s/n, 22071 Huesca, Spain; (J.Y.); (I.P.)
| | - Sergii Boryshpolets
- Laboratory of Reproductive Physiology, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25 Vodňany, Czech Republic; (S.B.); (V.K.); (H.G.)
| | - Vitaliy Kholodnyy
- Laboratory of Reproductive Physiology, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25 Vodňany, Czech Republic; (S.B.); (V.K.); (H.G.)
| | - Hermes Gadêlha
- Laboratory of Reproductive Physiology, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25 Vodňany, Czech Republic; (S.B.); (V.K.); (H.G.)
- Department of Engineering Mathematics, University of Bristol, 75 Woodland Rd, Bristol BS8 1UB, UK
| | - Rosaura Pérez-Pe
- BIOFITER Research Group, Department of Biochemistry and Molecular and Cell Biology, Faculty of Veterinary Sciences, Institute of Environmental Sciences of Aragón (IUCA), University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
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Ramió-Lluch L, Prieto OB, Ramírez A, Fernández-Novell JM, Peña A, Rodríguez-Gil JE. "In vitro" capacitation and further progesterone-induced acrosome exocytosis are linked to specific changes in the expression and location of threonine phosphorylation of boar spermatozoa. Reprod Domest Anim 2019; 54:1085-1094. [PMID: 31145488 DOI: 10.1111/rda.13478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 05/24/2019] [Indexed: 12/29/2022]
Abstract
The aim of this study was to determine if the achievement of the "in vitro" capacitation (IVC) status and subsequent progesterone-induced "in vitro" acrosome exocytosis (IVAE) was accompanied with overall changes in threonine phosphorylation (pThre) of boar spermatozoa. For this purpose, mono- and bi-dimensional Western blot analyses as well as immunocytochemistry studies against pThre were performed in boar sperm subjected to IVC and subsequent IVAE. Mono-dimensional Western blot in non-capacitated samples showed that launching of IVC did induce an overall increase in signal intensity in all observed bands that was followed by a subsequent decrease afterwards. Bi-dimensional Western blot analysis showed the presence of four main signal protein clusters. The attainment of IVC induced an overall decrease in the number and intensity of spots of Clusters A, B and C and a concomitant increase in the intensity of spots of Cluster D. The IVAE launching caused a rapid increase in the intensity of spots of Clusters B, C and D, which was followed by a subsequent decrease of the intensity together with a concomitant pI displacement of Cluster C. Finally, immunocytochemistry showed that the pThre signal of non-capacitated cells was located at the whole sperm. The IVC did not induce prominent changes in this location. In contrast, the induction of IVAE caused the appearance of an additional an intense acrosome and tail pThre signal that subsequently decreased. In conclusion, our results indicate that IVC and further IVAE induced specific changes in the intensity and appearance of pThre protein phosphorylation which were linked to changes of specific protein characteristics as pI. These results support, thus, the existence of a specific role of pThre in IVC/IVAE of boar sperm.
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Affiliation(s)
- Laura Ramió-Lluch
- Dept. Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Olga Blanco Prieto
- Dept. Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Alfredo Ramírez
- Animal Science Institute, Austral University of Chile, Valdívia, Chile
| | | | - Alejandro Peña
- Dept. Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Joan Enric Rodríguez-Gil
- Dept. Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Spain
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Bielas W, Niżański W, Partyka A, Rząsa A, Mordak R. Effect of long-term storage in Safe Cell+ extender on boar sperm DNA integrity and other key sperm parameters. Acta Vet Scand 2017; 59:58. [PMID: 28893310 PMCID: PMC5594552 DOI: 10.1186/s13028-017-0325-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 09/03/2017] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND There is some controversy about the extent of changes in different sperm cell features in stored boar semen, especially regarding the potential role of the DNA fragmentation assay for assessment of sperm fertilizing ability. The aim of this study was to assess the effect of time of storage and the dynamic changes in sperm cell characteristics in normospermic boar semen stored in long-term extender, in order to determine the susceptibility to damage of particular structures of spermatozoa during cooling and storage at 17 °C for 240 h post collection. The study included five ejaculates from each of seven boars of the Polish Large White breed (n = 35 ejaculates). The sperm characteristics were assessed using a flow cytometer and a computer assisted sperm analyzer on samples at 0, 48, 96, 168 and 240 h post collection. RESULTS The sperm chromatin structure assay (SCSA) showed a significant abrupt increase (P < 0.01) in the DNA fragmentation index (%DFI) after 48 h of semen storage with only subtle changes thereafter, not exceeding 5% on average after 240 h of storage. The use of a combination of SYBR-14/PI stains did not reveal any significant changes in the percentage of live sperm cells up to 168 h of semen storage. A significant (P < 0.01) decrease in the percentage of live spermatozoa with intact acrosomes was observed after prolonged semen storage (168 h). A significant and progressive decrease in sperm motility was recorded during the whole period of semen storage. CONCLUSIONS Storage of boar semen extended in long-term diluent at 17 °C for 48 h initially induced a decrease in the integrity of sperm DNA. This suggests that the structure of boar sperm DNA is susceptible to damage, especially during semen extension and at the beginning of sperm storage. These findings support the opinion that the SCSA test has only a low potential for routine assessment of boar semen preserved in the liquid state and for assessment of sperm quality changes during 10 days of semen preservation. Remarkably, the integrity of acrosomes and plasma membranes remained nearly unchanged for 7 days.
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Affiliation(s)
- Wiesław Bielas
- Department of Reproduction and Clinic of Farm Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, pl. Grunwaldzki 49, 50-366 Wrocław, Poland
| | - Wojciech Niżański
- Department of Reproduction and Clinic of Farm Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, pl. Grunwaldzki 49, 50-366 Wrocław, Poland
| | - Agnieszka Partyka
- Department of Reproduction and Clinic of Farm Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, pl. Grunwaldzki 49, 50-366 Wrocław, Poland
| | - Anna Rząsa
- Department of Immunology, Pathophysiology and Veterinary Prevention Medicine, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, ul. C. K. Norwida 31, 50-375 Wrocław, Poland
| | - Ryszard Mordak
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, pl. Grunwaldzki 47, 50-366 Wrocław, Poland
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Feugang JM. Novel agents for sperm purification, sorting, and imaging. Mol Reprod Dev 2017; 84:832-841. [PMID: 28481043 DOI: 10.1002/mrd.22831] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 05/03/2017] [Indexed: 01/15/2023]
Abstract
The stringent selection of viable spermatozoa ensures the transmission of high-quality genetic material to the egg during fertilization. Sperm heterogeneity within or between ejaculates and between males obliges varied post-collection handling of semen to assure satisfactory fertility rates. The current techniques used to assess sperm generally detect non-viable and non-fertilizing gametes in the ejaculate, but do not permit the investigation of semen for improved fertility outcomes. Advances in technology, however, have spurred the search for new approaches to enrich semen with high-quality spermatozoa and to track intra-uterine sperm migration. This review highlights the current and future methodologies used for sperm labeling, selection, tracking, and imaging, with specific emphasis on the recent influence of nanotechnology.
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Affiliation(s)
- Jean M Feugang
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, Mississippi
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Yániz J, Soler C, Alquézar-Baeta C, Santolaria P. Toward an integrative and predictive sperm quality analysis in Bos taurus. Anim Reprod Sci 2017; 181:108-114. [DOI: 10.1016/j.anireprosci.2017.03.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/23/2017] [Accepted: 03/30/2017] [Indexed: 10/19/2022]
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Pinart E, Domènech E, Bussalleu E, Yeste M, Bonet S. A comparative study of the effects of Escherichia coli and Clostridium perfringens upon boar semen preserved in liquid storage. Anim Reprod Sci 2016; 177:65-78. [PMID: 27988080 DOI: 10.1016/j.anireprosci.2016.12.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/16/2016] [Accepted: 12/12/2016] [Indexed: 11/18/2022]
Abstract
The present study compares the sperm quality of boar seminal doses artificially inoculated with Escherichia coli and Clostridium perfringens, and maintained in liquid storage at 15°C for a 9-day period. Seminal doses from 10 sexually mature Piétrain boars were diluted in a Beltsville Thawing Solution (BTS)-based extender and infected either with E. coli or C. perfringens, with bacterial loads ranging from 101 to 107cfumL-1. During storage, the changes in sperm quality were determined by assessing pH, sperm viability, sperm motiliy, sperm morphology, sperm agglutination degree, and sperm-bacteria interaction. The infection of seminal doses led to an alkalinization of the medium, which was of higher extend in doses infected with C. perfringens. The effect of contamination on sperm viability and motility relied on bacterial type and load. Therefore, while E. coli was more harmful than C. perfringens in bacterial loads ranging from 101 to 106cfumL-1, the detrimental impact of C. perfringens was more apparent than that of E. coli at a bacterial load of 107cfumL-1. Despite sperm morphology not being affected by either bacterial type or load, sperm agglutination and sperm-bacteria interaction were characteristic of doses infected with E. coli, and increased concomintantly with bacterial load and along storage period. In conclusion, the effects of infection by E. coli on sperm quality were dependent of both bacterial load and storage period, whereas the effects of C. perfringens were mainly dependent on the bacterial load, with a threshold at 107cfumL-1 from which the sperm quality of seminal doses was greatly impaired.
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Affiliation(s)
- Elisabeth Pinart
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, E-17071 Girona, Spain.
| | - Esther Domènech
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, E-17071 Girona, Spain
| | - Eva Bussalleu
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, E-17071 Girona, Spain
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, E-17071 Girona, Spain
| | - Sergi Bonet
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, E-17071 Girona, Spain
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Triplett M, Parker H, McDaniel C, Kiess A. Influence of 6 different intestinal bacteria on Beltsville Small White turkey semen. Poult Sci 2016; 95:1918-26. [DOI: 10.3382/ps/pew119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2016] [Indexed: 11/20/2022] Open
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Kumar N, Bhalla V, Kumar M. Development and sensing applications of fluorescent motifs within the mitochondrial environment. Chem Commun (Camb) 2016; 51:15614-28. [PMID: 26759839 DOI: 10.1039/c5cc07098h] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The potential use of fluorescent molecular probes to measure ions and biomolecules has contributed incessantly to the understanding of chemical and biological systems. The approach has many advantages such as high sensitivity, simplicity and non-destructive cellular imaging that offer visible information about the targeted species. In this article, our objective is to discuss fluorescent probes that have sensing applications within the mitochondrial environment. Mitochondria are cellular organelles which are well known for their unique physiological functions and have been found to be associated with various diseases and disorders. It is therefore, important to develop new tools and tactics that can provide useful information concerning the mitochondrial environment which in turn is essential to understand its biophysical functioning and related diseases.
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Ramió-Lluch L, Yeste M, Fernández-Novell JM, Estrada E, Rocha L, Cebrián-Pérez JA, Muiño-Blanco T, Concha II, Ramírez A, Rodríguez-Gil JE. Oligomycin A-induced inhibition of mitochondrial ATP-synthase activity suppresses boar sperm motility and in vitro capacitation achievement without modifying overall sperm energy levels. Reprod Fertil Dev 2015; 26:883-97. [PMID: 25319379 DOI: 10.1071/rd13145] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 06/08/2013] [Indexed: 02/04/2023] Open
Abstract
Incubation of boar spermatozoa in a capacitation medium with oligomycin A, a specific inhibitor of the F0 component of the mitochondrial ATP synthase, induced an immediate and almost complete immobilisation of cells. Oligomycin A also inhibited the ability of spermatozoa to achieve feasible in vitro capacitation (IVC), as measured through IVC-compatible changes in motility patterns, tyrosine phosphorylation levels of the acrosomal p32 protein, membrane fluidity and the ability of spermatozoa to achieve subsequent, progesterone-induced in vitro acrosome exocytosis (IVAE). Both inhibitory effects were caused without changes in the rhythm of O2 consumption, intracellular ATP levels or mitochondrial membrane potential (MMP). IVAE was accompanied by a fast and intense peak in O2 consumption and ATP levels in control spermatozoa. Oligomycin A also inhibited progesterone-induced IVAE as well as the concomitant peaks of O2 consumption and ATP levels. The effect of oligomycin on IVAE was also accompanied by concomitant alterations in the IVAE-induced changes on intracellular Ca(2+) levels and MMP. Our results suggest that the oligomycin A-sensitive mitochondrial ATP-synthase activity is instrumental in the achievement of an adequate boar sperm motion pattern, IVC and IVAE. However, this effect seems not to be linked to changes in the overall maintenance of adequate energy levels in stages other than IVAE.
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Affiliation(s)
- Laura Ramió-Lluch
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Marc Yeste
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Josep M Fernández-Novell
- Department of Biochemistry and Molecular Biology, University of Barcelona, E-08028 Barcelona, Spain
| | - Efrén Estrada
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Luiz Rocha
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - José A Cebrián-Pérez
- Department of Biochemistry and Molecular and Cell Biology, I. U. C. A., School of Veterinary Medicine, University of Zaragoza, E-50013 Zaragoza, Spain
| | - Teresa Muiño-Blanco
- Department of Biochemistry and Molecular and Cell Biology, I. U. C. A., School of Veterinary Medicine, University of Zaragoza, E-50013 Zaragoza, Spain
| | - Ilona I Concha
- Institute of Biochemistry and Microbiology and Institute of Animal Science, Universidad Austral de Chile, Independencia 641, Valdivia, Chile
| | - Alfredo Ramírez
- Institute of Biochemistry and Microbiology and Institute of Animal Science, Universidad Austral de Chile, Independencia 641, Valdivia, Chile
| | - Joan E Rodríguez-Gil
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain
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Haines MD, Parker HM, McDaniel CD, Kiess AS. Impact of 6 different intestinal bacteria on broiler breeder sperm motility in vitro. Poult Sci 2013; 92:2174-81. [PMID: 23873566 DOI: 10.3382/ps.2013-03109] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Male fertility is often evaluated by measuring sperm parameters, including concentration, viability, and motility. This is important because after copulation occurs, sperm must overcome many barriers in the female reproductive tract to fertilize the ovum. In mammalian species, sperm have been shown to have reduced motility when bacteria are present. In male broiler breeders, bacteria have been associated with spermatozoa, but their effect on motility has not been investigated. The sperm quality index is a modern rapid method of evaluating avian sperm motility. Therefore, the objective of this study was to use the sperm quality index to determine if broiler breeder sperm motility is reduced when semen is exposed to various bacteria. In this experiment, semen was collected from 20 broiler breeders to obtain a pooled neat semen sample. Six different intestinal bacteria, Salmonella enterica, Escherichia coli, Campylobacter jejuni, Clostridium bifermentans, Lactobacillus acidophilus, and Bifidobacterium animalis were cultured overnight. For each bacterium, 50 µL of semen was diluted in 450 µL of saline, sterile broth, or the overnight culture, creating 3 treatments. The experiment was repeated twice. In each treatment, 3 replicates were evaluated at 0 and 10 min postinoculation, creating a completely randomized design with a split plot over time. Also, the pH was measured for each treatment at 0 and 10 min. The results indicated that all broths containing bacteria immediately reduced broiler breeder sperm motility when compared with the controls (P < 0.0001), but broths containing Bifidobacterium or Lactobacillus virtually made sperm immotile. Although broth containing Salmonella, Campylobacter, and Bifidobacterium immediately reduced sperm motility, the reduction did not change over time. Broths containing E. coli, Clostridium, and Lactobacillus reduced sperm motility immediately, but over time motility continued to decrease. However, pH was increased when semen was exposed to the E. coli and Campylobacter treatment, but when semen was exposed to Bifidobacterium and Lactobacillus treatments, pH was reduced. In conclusion, the results indicate that bacteria can reduce broiler breeder sperm motility upon exposure.
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Affiliation(s)
- M D Haines
- Poultry Science Department, Mississippi State University, Mississippi State, MS, USA
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14
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Acrosin activity is a suitable indicator of boar semen preservation at 17 °C when increasing environmental temperature and radiation. Theriogenology 2013; 80:234-47. [PMID: 23669168 DOI: 10.1016/j.theriogenology.2013.04.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 03/04/2013] [Accepted: 04/03/2013] [Indexed: 11/21/2022]
Abstract
The effect of increasing environmental temperature and radiation on the sperm quality and the field fertility of refrigerated seminal doses from AI boars (N = 30) was analyzed throughout four experimental months (from March through June). In each experimental month, analyses of sperm quality were performed at days 0, 1, 3, 5, 7, and 9 of refrigeration of seminal doses; pregnancy rate and litter size were evaluated using double monospermic inseminations of multiparous female animals using seminal doses at Days 1 to 2 and Days 3 to 4 of refrigeration. Sperm quality was assessed from the evaluation of conventional parameters of sperm concentration, sperm motility, sperm morphology, and sperm viability, and capacitation parameters of membrane lipid disorder, intracellular calcium content, and acrosin activity. Results showed that sperm quality of boar seminal doses was negatively affected by increasing temperature and radiation, which resulted in significantly decreased sperm motility and viability, acrosin activity, pregnancy rate, and litter size, and significantly increased intracellular calcium levels in the trials performed in June. In any experimental month, aging of refrigerated doses was associated with the progressive increase of intracellular calcium levels and inactivation of acrosin, that began from Day 5 of storage in the trials performed in March and April, from Day 3 in those of May, and from Day 0 in those of June. Among the sperm parameters analyzed, only acrosin activity exhibited a clearly differentiated pattern in association with increasing temperature and radiation, and a significant correlation with pregnancy rate and litter size. These results highlighted the potential role of acrosin activity as an indicator of boar sperm preservation at 17 °C in boars.
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15
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Sepúlveda L, Bussalleu E, Yeste M, Torner E, Bonet S. How do different concentrations of Clostridium perfringens affect the quality of extended boar spermatozoa? Anim Reprod Sci 2013; 140:83-91. [PMID: 23755936 DOI: 10.1016/j.anireprosci.2013.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 04/26/2013] [Accepted: 04/28/2013] [Indexed: 11/28/2022]
Abstract
Bacteriospermia in boar fresh and extended semen is a frequent finding that produces alterations on sperm quality and, consequently, causes economic losses in artificial insemination (AI) centres. The present study sought to evaluate the effect of different infective concentrations of Clostridium perfringens on boar sperm quality, assessed as sperm motility (CASA), morphology and viability, through 11 days of storage at 15°C (experiment 1), and after 96h of incubation at 37°C (experiment 2). With this purpose, different seminal doses were artificially inoculated with different infective concentrations of C. perfringens, ranging from 10(2) to 10(8)cfumL(-1). The negative controls were non-inoculated doses. Sperm quality was checked after 0, 1, 2, 3, 4, 7, 8, 9, 10 and 11 days of storage at 15°C in experiment 1, and after 0, 24, 48, 72 and 96h at 37°C in the second experiment. Moreover, the presence/absence of bacteria was detected by PCR analyses during both experiments at different time points. In both experiments, sperm morphology of inoculated samples did not differ from the negative control. Conversely, detrimental effects on sperm viability and motility were observed after 24h of incubation/storage at the highest infective concentrations in both experiments. The deleterious effects observed because of the presence of C. perfringens in semen emphasise the relevance of detecting bacteria in extended doses destined to AI. So, this study suggests that the evaluation of bacterial contamination in semen is a procedure that should be routinely applied while assessing sperm quality in AI centres to avoid the use of doses with low sperm quality and the possible spread of bacterial contaminants.
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Affiliation(s)
- Lilian Sepúlveda
- Biotechnology of Animal and Human Reproduction TechnoSperm, Department of Biology, Institute of Food and Agricultural Technology, University of Girona, 17071 Girona, Catalonia, Spain.
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16
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Neto BAD, Corrêa JR, Silva RG. Selective mitochondrial staining with small fluorescent probes: importance, design, synthesis, challenges and trends for new markers. RSC Adv 2013. [DOI: 10.1039/c2ra21995f] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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17
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Fàbrega A, Puigmulé M, Bonet S, Pinart E. Epididymal maturation and ejaculation are key events for further in vitro capacitation of boar spermatozoa. Theriogenology 2012; 78:867-77. [DOI: 10.1016/j.theriogenology.2012.03.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 12/01/2022]
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18
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Toxic effects of Hoechst staining and UV irradiation on preimplantation development of parthenogenetically activated mouse oocytes. ZYGOTE 2012; 22:32-40. [PMID: 22784634 DOI: 10.1017/s0967199412000251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Parthenogenetic activation of oocytes is a helpful tool to obtain blastocysts, of which the inner cell mass may be used for derivation of embryonic stem cells. In order to improve activation and embryonic development after parthenogenesis, we tried to use sperm injection and subsequent removal of the sperm head to mimic the natural Ca2+ increases by release of the oocyte activating factor. Visualization of the sperm could be accomplished by Hoechst staining and ultraviolet (UV) light irradiation. To exclude negative effects of this treatment, we examined toxicity on activated mouse oocytes. After activation, oocytes were incubated in Hoechst 33342 or 33258 stain and exposed to UV irradiation. The effects on embryonic development were evaluated. Our results showed that both types of Hoechst combined with UV irradiation have toxic effects on parthenogenetically activated mouse oocytes. Although activation and cleavage rate were not affected, blastocyst formation was significantly reduced. Secondly, we used MitoTracker staining for removal of the sperm. Sperm heads were stained before injection and removed again after 1 h. However, staining was not visible anymore in all oocytes after intracytoplasmic sperm injection. In case the sperm could be removed, most oocytes died after 1 day. As MitoTracker was also not successful, alternative methods for sperm identification should be investigated.
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Bonet S, Briz MD, Yeste M. A Proper Assessment of Boar Sperm Function May Not Only Require Conventional Analyses but Also Others Focused on Molecular Markers of Epididymal Maturation. Reprod Domest Anim 2012; 47 Suppl 3:52-64. [DOI: 10.1111/j.1439-0531.2012.02033.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Yeste M, Castillo-Martín M, Bonet S, Briz MD. Direct binding of boar ejaculate and epididymal spermatozoa to porcine epididymal epithelial cells is also needed to maintain sperm survival in in vitro co-culture. Anim Reprod Sci 2012; 131:181-93. [DOI: 10.1016/j.anireprosci.2012.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 02/28/2012] [Accepted: 03/02/2012] [Indexed: 11/26/2022]
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21
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Ramió-Lluch L, Fernández-Novell JM, Peña A, Ramírez A, Concha II, Rodríguez-Gil JE. ‘In Vitro’ Capacitation and Further ‘In Vitro’ Progesterone-Induced Acrosome Exocytosis are Linked to Specific Changes in the Expression and Acrosome Location of Protein Phosphorylation in Serine Residues of Boar Spermatozoa. Reprod Domest Anim 2011; 47:766-76. [DOI: 10.1111/j.1439-0531.2011.01965.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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"In vitro" capacitation and subsequent acrosome reaction are related to changes in the expression and location of midpiece actin and mitofusin-2 in boar spermatozoa. Theriogenology 2011; 77:979-88. [PMID: 22192394 DOI: 10.1016/j.theriogenology.2011.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 09/13/2011] [Accepted: 10/07/2011] [Indexed: 11/22/2022]
Abstract
The induction of "in vitro" capacitation (IVC) and subsequent, progesterone-induced "in vitro" acrosome reaction (IVAR) was concomitant with an increase in actin polymerization, also showing an increase in actin presence at the apical area of the midpiece. The presence of mitofusin-2, a protein involved in the regulation of the coordinated mitochondrial function, expanded from midpiece to the principal piece after IVC and IVAR. All of these results indicate that the increase of boar sperm mitochondrial activity during IVC and the first minutes of IVAR is concomitant with changes in the expression and location of both actin and mitofusin-2. Our results suggest that both actin and mitofusin-2 play important roles in the modulation of boar sperm mitochondrial function, both by originating changes in the protein membrane environment and by changes in the mitochondrial structure itself.
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23
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Freezing-thawing induces alterations in histone H1-DNA binding and the breaking of protein-DNA disulfide bonds in boar sperm. Theriogenology 2011; 76:1450-64. [DOI: 10.1016/j.theriogenology.2011.05.039] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 05/04/2011] [Accepted: 05/04/2011] [Indexed: 11/20/2022]
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24
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Effects of different concentrations of enterotoxigenic and verotoxigenic E. coli on boar sperm quality. Anim Reprod Sci 2011; 127:176-82. [DOI: 10.1016/j.anireprosci.2011.07.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 07/14/2011] [Accepted: 07/23/2011] [Indexed: 11/22/2022]
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25
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Yeste M, Barrera X, Coll D, Bonet S. The effects on boar sperm quality of dietary supplementation with omega-3 polyunsaturated fatty acids differ among porcine breeds. Theriogenology 2011; 76:184-96. [DOI: 10.1016/j.theriogenology.2011.01.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Accepted: 01/29/2011] [Indexed: 11/28/2022]
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26
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Ramió-Lluch L, Fernández-Novell JM, Peña A, Colás C, Cebrián-Pérez JA, Muiño-Blanco T, Ramírez A, Concha II, Rigau T, Rodríguez-Gil JE. ‘In Vitro’ Capacitation and Acrosome Reaction are Concomitant with Specific Changes in Mitochondrial Activity in Boar Sperm: Evidence for a Nucleated Mitochondrial Activation and for the Existence of a Capacitation-Sensitive Subpopulational Structure. Reprod Domest Anim 2010; 46:664-73. [DOI: 10.1111/j.1439-0531.2010.01725.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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27
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Thuwanut P, Chatdarong K, Johannisson A, Bergqvist AS, Söderquist L, Axnér E. Cryopreservation of epididymal cat spermatozoa: effects of in vitro antioxidative enzymes supplementation and lipid peroxidation induction. Theriogenology 2010; 73:1076-87. [DOI: 10.1016/j.theriogenology.2010.01.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Revised: 12/21/2009] [Accepted: 01/09/2010] [Indexed: 10/19/2022]
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28
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A diet supplemented with l-carnitine improves the sperm quality of Piétrain but not of Duroc and Large White boars when photoperiod and temperature increase. Theriogenology 2010; 73:577-86. [DOI: 10.1016/j.theriogenology.2009.10.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Revised: 10/21/2009] [Accepted: 10/24/2009] [Indexed: 11/24/2022]
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29
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Yeste M, Briz M, Pinart E, Sancho S, Bussalleu E, Bonet S. The osmotic tolerance of boar spermatozoa and its usefulness as sperm quality parameter. Anim Reprod Sci 2010; 119:265-74. [PMID: 20227204 DOI: 10.1016/j.anireprosci.2010.02.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 01/12/2010] [Accepted: 02/12/2010] [Indexed: 11/16/2022]
Abstract
Predicting the fertility outcome of ejaculates is very important in the field of porcine reproduction. The aims of this study were to determine the effects of different osmotic treatments on boar spermatozoa and to correlate them with fertility and prolificacy, assessed as non-return rates within 60 days (NRR(60d)) of the first inseminations, and litter size (LS), respectively. Sperm samples (n=100) from one hundred healthy Piétrain boars were used to assess 48 treatments combining different osmolalities (ranged between 100 and 4000 mOsm kg(-1)), different compounds used to prepare anisotonic solutions, and two different modalities: return and non-return to isotonic conditions. Sperm quality was evaluated before and after applying the treatments on the basis of analyses of sperm viability, motility, morphology and percentages of acrosome-intact spermatozoa. Statistical analyses were performed using a one-way ANOVA and post hoc Tukey's test, linear regression analyses (Pearson correlation and multiple regression) and Jackknife cross-validation. Although three conventional parameters: sperm viability, sperm morphology and the percentages of acrosome-intact spermatozoa were significantly correlated with NRR(60d) and with LS, their respective osmotic tolerance parameters (defined for each parameter and treatment regarding with negative control) presented a higher Pearson coefficient with both fertility and prolificacy in three treatments (150 mOsm kg(-1) with non-return to isotonic conditions, 200 mOsm kg(-1) with return and 500 mOsm kg(-1) using sodium citrate and non-return to isotonic conditions). We conclude that osmotic resistance in sperm viability, sperm morphology and acrosome-intactness in the treatments mentioned above could be assessed along with classical parameters to better predict the fertilising ability of a given ejaculate.
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Affiliation(s)
- Marc Yeste
- Biotechnology of Animal and Human Reproduction, Unit of Cell Biology, Department of Biology, University of Girona, Campus Montilivi s/n, Girona, Catalonia, Spain.
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30
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Mugnier S, Dell'Aquila ME, Pelaez J, Douet C, Ambruosi B, De Santis T, Lacalandra GM, Lebos C, Sizaret PY, Delaleu B, Monget P, Mermillod P, Magistrini M, Meyers SA, Goudet G. New insights into the mechanisms of fertilization: comparison of the fertilization steps, composition, and structure of the zona pellucida between horses and pigs. Biol Reprod 2009; 81:856-70. [PMID: 19587333 DOI: 10.1095/biolreprod.109.077651] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The mechanism of fertilization remains largely enigmatic in mammals. Most studies exploring the molecular mechanism underlying fertilization have been restricted to a single species, generally the mouse, without a comparative approach. However, the identification of divergences between species could allow us to highlight key components in the mechanism of fertilization. In the pig, in vitro fertilization (IVF) and polyspermy rates are high, and spermatozoa penetrate easily through the zona pellucida (ZP). In contrast, IVF rates are low in the horse, and polyspermy is scarce. Our objective was to develop a comparative strategy between these two divergent models. First, we compared the role of equine and porcine gametes in the following five functions using intraspecific and interspecific IVF: ZP binding, acrosome reaction, penetration through the ZP, gamete fusion, and pronucleus formation. Under in vitro conditions, we showed that the ZP is a determining element in sperm-ZP attachment and penetration, whereas the capacity of the spermatozoa is of less importance. In contrast, the capacity of the spermatozoa is a key component of the acrosome reaction step. Second, we compared the composition and structure of the equine and porcine ZP. We observed differences in the number and localization of the ZP glycoproteins and in the mesh-like structure of the ZP between equine and porcine species. These differences might correlate with the differences in spermatozoal attachment and penetration rates. In conclusion, our comparative approach allows us to identify determining elements in the mechanism of fertilization.
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Affiliation(s)
- Sylvie Mugnier
- Institut National de la Recherche Agronomique, UMR85, Physiologie de la Reproduction et des Comportements, Nouzilly, France
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31
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Direct contact between boar spermatozoa and porcine oviductal epithelial cell (OEC) cultures is needed for optimal sperm survival in vitro. Anim Reprod Sci 2009; 113:263-78. [DOI: 10.1016/j.anireprosci.2008.08.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Revised: 06/28/2008] [Accepted: 08/01/2008] [Indexed: 11/18/2022]
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32
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Bussalleu E, Pinart E, Rivera MM, Briz M, Sancho S, Yeste M, Casas I, Fàbrega A, Rigau T, Rodriguez-Gil JE, Bonet S. Effects of Matrix Filtration of Low-Quality Boar Semen Doses on Sperm Quality. Reprod Domest Anim 2009; 44:499-503. [DOI: 10.1111/j.1439-0531.2008.01221.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Yeste M, Briz M, Pinart E, Sancho S, Garcia-Gil N, Badia E, Bassols J, Pruneda A, Bussalleu E, Casas I, Bonet S. Hyaluronic acid delays boar sperm capacitation after 3 days of storage at 15°C. Anim Reprod Sci 2008; 109:236-50. [DOI: 10.1016/j.anireprosci.2007.11.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 10/16/2007] [Accepted: 11/13/2007] [Indexed: 11/28/2022]
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34
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Yeste M, Briz M, Pinart E, Sancho S, Garcia-Gil N, Badia E, Bassols J, Pruneda A, Bussalleu E, Casas I, Bonet S. Boar spermatozoa and prostaglandin F2α. Anim Reprod Sci 2008; 108:180-95. [PMID: 17897798 DOI: 10.1016/j.anireprosci.2007.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2007] [Revised: 07/30/2007] [Accepted: 08/12/2007] [Indexed: 11/24/2022]
Abstract
Prostaglandin F2alpha (PGF2alpha) has been used to improve reproductive performance in swine. The goal of the present work was to determine how the addition of PGF2alpha affects boar sperm quality. Eleven different treatments were evaluated: eight with only PGF2alpha (0.625, 1.25, 2.50, 5, 10, 12.50, 25 and 50mg PGF2alpha/100ml) and three binary treatments (0.625mg PGF2alpha/100ml+200microg/ml hyaluronic acid (HA), 1.25mg PGF2alpha/100ml+200microg/ml HA, 0.625mg PGF2alpha/100ml+7.5microM caffeine (Caf)). All these substances were added to 16 ejaculates from 16 healthy and sexually mature boars (n=16), and each ejaculate was considered as a replicate. Our study also assessed the effects of these 11 treatments over different periods of preservation. Sperm quality was tested immediately after the addition of treatments (time 0), and after 1, 3, 6 and 10 days of cooling at 15 degrees C. To evaluate sperm quality, five parameters were analysed: (1) sperm viability, acrosome and mitochondrial sheath integrity (using a multiple fluorochrome-staining test), (2) sperm motility, (3) sperm morphology and (4) agglutination (using a computer assisted system) and (5) osmotic resistance (using the ORT). Parametric (analysis of variance for repeated measures) and non-parametric tests (Friedman test) were used as statistical analyses. Treatments with PGF2alpha concentrations higher than 12.5mg/100ml were cytotoxic while the others did not damage boar spermatozoa. Thus, the other treatments may be used to produce profitable effects without adverse effects. Moreover, the addition of PGF2alpha at 5mg/100ml to sperm diluted in BTS may maintain sperm viability and motility better after 6 days of cooling, because significant differences were observed (P<0.05) compared with control at the same time.
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Affiliation(s)
- M Yeste
- Biotechnology of Porcine Reproduction, Department of Biology, Institute of Food and Agricultural Technology, Faculty of Sciences, University of Girona, Campus Montilivi s/n, 17071 Girona, Spain.
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Flores E, Cifuentes D, Fernández-Novell J, Medrano A, Bonet S, Briz M, Pinart E, Peña A, Rigau T, Rodríguez-Gil J. Freeze-thawing induces alterations in the protamine-1/DNA overall structure in boar sperm. Theriogenology 2008; 69:1083-94. [DOI: 10.1016/j.theriogenology.2008.01.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2007] [Revised: 11/28/2007] [Accepted: 01/23/2008] [Indexed: 11/30/2022]
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36
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Bussalleu E, Pinart E, Rivera MM, Arias X, Briz M, Sancho S, García-Gil N, Bassols J, Pruneda A, Yeste M, Casas I, Rigau T, Rodriguez-Gil JE, Bonet S. Effects of filtration of semen doses from subfertile boars through neuter Sephadex columns. Reprod Domest Anim 2008; 43:48-52. [PMID: 18199258 DOI: 10.1111/j.1439-0531.2007.00853.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study was designed to develop a method of improving the quality of sperm obtained from subfertile Piétrain boars. Seminal doses were filtered through neuter Sephadex columns (G-25 Medium, G-50 Fine, G-50 Medium and G-75, length 10 +/- 0.5 cm, flow rate 1 ml/20 s). Doses were prepared by pooling 10 ml semen samples collected from 58 asthenoteratospermic boars and diluted the sperm-cell rich fraction 1 : 6 in Betsville thawing solution extender. Sperm quality was determined before and after the filtering process. Sperm morphology and motility were assessed using the computer program SCA 2002 production, and sperm vitality was evaluated by fluorescence multistaining. ORT and HRT tests were used to determine the osmotic resistance of spermatozoa, and metabolic performance was assessed by measuring l-lactate production. Results indicate that the filtration process rendered increased proportions of mature spermatozoa and of viable spermatozoa with an intact acrosome, nucleus and mitochondrial sheath. Sperm filtration led to decreased percentages of spermatozoa with proximal and distal droplets and of agglutinated spermatozoa, along with slightly diminished ORT values. HRT scores and L-lactate production were unaffected. Our findings indicate that filtering through a Sephadex column improves the sperm morphology and vitality of seminal doses obtained from subfertile boars, but produces no functional changes in the spermatozoa. All four column types yielded similar results.
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Affiliation(s)
- E Bussalleu
- Biotecnologia de la Reproducció Porcina, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Girona, Spain
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Ramió L, Rivera M, Ramírez A, Concha I, Peña A, Rigau T, Rodríguez-Gil J. Dynamics of motile-sperm subpopulation structure in boar ejaculates subjected to “in vitro” capacitation and further “in vitro” acrosome reaction. Theriogenology 2008; 69:501-12. [DOI: 10.1016/j.theriogenology.2007.10.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 10/23/2007] [Accepted: 10/29/2007] [Indexed: 11/28/2022]
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