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Jurado-Campos A, Soria-Meneses PJ, Arenas-Moreira M, Alonso-Moreno C, Rodríguez-Robledo V, Soler AJ, Garde JJ, Del Rocío Fernández-Santos M. Minimizing sperm oxidative stress using nanotechnology for breeding programs in rams. J Anim Sci Biotechnol 2023; 14:106. [PMID: 37559077 PMCID: PMC10413538 DOI: 10.1186/s40104-023-00907-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/12/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Artificial insemination (AI) is a routine breeding technology in animal reproduction. Nevertheless, the temperature-sensitive nature and short fertile lifespan of ram sperm samples hamper its use in AI. In this sense, nanotechnology is an interesting tool to improve sperm protection due to the development of nanomaterials for AI, which could be used as delivery vehicles. In this work, we explored the feasibility of vitamin E nanoemulsion (NE) for improving sperm quality during transport. RESULTS With the aim of evaluating this proposal, ejaculates of 7 mature rams of Manchega breed were collected by artificial vagina and extended to 60 × 106 spz/mL in Andromed®. Samples containing control and NE (12 mmol/L) with and without exogenous oxidative stress (100 µmol/L Fe2+/ascorbate) were stored at 22 and 15 ºC and motility (CASA), viability (YO-PRO/PI), acrosomal integrity (PNA-FITC/PI), mitochondrial membrane potential (Mitotracker Deep Red 633), lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (SCSA®) monitored during 96 h. Our results show that NE could be used to maintain ram spermatozoa during transport at 15 and 22 ºC for up to 96 h, with no appreciable loss of kinematic and physiological characteristics of freshly collected samples. CONCLUSIONS The storage of ram spermatozoa in liquid form for 2-5 d with vitamin E nanoemulsions may lead more flexibility to breeders in AI programs. In view of the potential and high versatility of these nanodevices, further studies are being carried out to assess the proposed sperm preservation medium on fertility after artificial insemination.
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Affiliation(s)
| | | | - María Arenas-Moreira
- Departamento de Química Inorgánica, Orgánica Y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
- Centro Regional de Investigación Biomédicas, Unidad nanoDrug, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
| | - Carlos Alonso-Moreno
- Departamento de Química Inorgánica, Orgánica Y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
- Centro Regional de Investigación Biomédicas, Unidad nanoDrug, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
| | - Virginia Rodríguez-Robledo
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
- Facultad de Farmacia, Universidad de Castilla La Mancha, 02071, Albacete, Spain
| | - Ana Josefa Soler
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
| | - José Julián Garde
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
| | - María Del Rocío Fernández-Santos
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain.
- Facultad de Farmacia, Universidad de Castilla La Mancha, 02071, Albacete, Spain.
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Jurado-Campos A, Soria-Meneses PJ, Sánchez-Rubio F, Niza E, Bravo I, Alonso-Moreno C, Arenas-Moreira M, García-Álvarez O, Soler AJ, Garde JJ, Fernández-Santos MDR. Vitamin E Delivery Systems Increase Resistance to Oxidative Stress in Red Deer Sperm Cells: Hydrogel and Nanoemulsion Carriers. Antioxidants (Basel) 2021; 10:1780. [PMID: 34829650 PMCID: PMC8615287 DOI: 10.3390/antiox10111780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/25/2021] [Accepted: 11/03/2021] [Indexed: 11/24/2022] Open
Abstract
Oxidative stress has become a major concern in the field of spermatology, and one of the possible solutions to this acute problem would be the use of antioxidant protection; however, more studies are required in this field, as highly contradictory results regarding the addition of antioxidants have been obtained. Vitamin E is a powerful biological antioxidant, but its low stability and high hydrophobicity limit its application in spermatology, making the use of organic solvents necessary, which renders spermatozoa practically motionless. Keeping this in mind, we propose the use of hydrogels (HVEs) and nanoemulsions (NVEs), alone or in combination, as carriers for the controlled release of vitamin E, thus, improving its solubility and stability and preventing oxidative stress in sperm cells. Cryopreserved sperm from six stags was thawed and extended to 30 × 106 sperm/mL in Bovine Gamete Medium (BGM). Once aliquoted, the samples were incubated as follows: control, free vitamin E (1 mM), NVEs (9 mM), HVEs (1 mM), and the combination of HVEs and NVEs (H + N), with or without induced oxidative stress (100 µM Fe2+/ascorbate). The different treatments were analyzed after 0, 2, 5, and 24 h of incubation at 37 °C. Motility (CASA®), viability (YO-PRO-1/IP), mitochondrial membrane potential (Mitotracker Deep Red 633), lipid peroxidation (C11 BODIPY 581/591), intracellular reactive oxygen species production (CM-H2DCFDA), and DNA status (SCSA®) were assessed. Our results show that the deleterious effects of exogenous oxidative stress were prevented by the vitamin E-loaded carriers proposed, while the kinematic sperm parameters (p ˂ 0.05) and sperm viability were always preserved. Moreover, the vitamin E formulations maintained and preserved mitochondrial activity, prevented sperm lipid peroxidation, and decreased reactive oxygen species (ROS) production (p ˂ 0.05) under oxidative stress conditions. Vitamin E formulations were significantly different as regards the free vitamin E samples (p < 0.001), whose sperm kinematic parameters drastically decreased. This is the first time that vitamin E has been formulated as hydrogels. This new formulation could be highly relevant for sperm physiology preservation, signifying an excellent approach against sperm oxidative damage.
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Affiliation(s)
- Alejandro Jurado-Campos
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Pedro Javier Soria-Meneses
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Francisca Sánchez-Rubio
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Servicio de Farmacia Hospitalaria, Complejo Hospitalario Universitario de Albacete, GAI, 02071 Albacete, Spain
| | - Enrique Niza
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Iván Bravo
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Carlos Alonso-Moreno
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - María Arenas-Moreira
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Olga García-Álvarez
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Ana Josefa Soler
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - José Julián Garde
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - María del Rocío Fernández-Santos
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
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Riesco MF, Alvarez M, Anel-Lopez L, Neila-Montero M, Palacin-Martinez C, Montes-Garrido R, Boixo JC, de Paz P, Anel L. Multiparametric Study of Antioxidant Effect on Ram Sperm Cryopreservation-From Field Trials to Research Bench. Animals (Basel) 2021; 11:283. [PMID: 33498656 DOI: 10.3390/ani11020283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary The use of antioxidant compounds could be a successful tool to improve sperm cryopreservation protocols in ovine species. These molecules have been widely employed in different mammalian species with this purpose. It is important to consider the existence of a species-specific antioxidant effect discarding the extrapolations from other animal species. To corroborate the real effectiveness of these compounds is important to combine two approaches: in vitro sperm quality analyses and in vivo field trials based on fertility. In the first scenario, a multiparametric analyses and novel tests based on spermatozoa redox balance, as the main target of antioxidants, could improve the accuracy on antioxidant effectiveness on sperm quality. Moreover, an extensive field insemination study provides the definitive tool to select the best antioxidant treatment. All these aspects have been applied and extensively discussed throughout this manuscript. Novel approaches have been incorporated, such as RedoxSYS, to provide more accuracy in the integrative studies of Redox status in spermatozoa. The effectiveness of an antioxidant treatment, as trolox in our study, should be demonstrated in an integrative way, from in vivo (fertility trials) to in vitro analyses (sperm quality assays), especially when the final aim is to reach AI implementation. Abstract The optimization of sperm cryopreservation protocols in ram is a feasible tool to reinforce artificial insemination technologies considering the desirable application of sperm by vaginal/cervical or transcervical deposition. Cryopreservation provokes different types of damage on spermatozoa and many of these detrimental effects are triggered by redox deregulation. For this reason, the antioxidant supplementation in sperm cryopreservation protocols to decrease reactive oxygen species (ROS) levels and to equilibrate redox status has been widely employed in different species. Despite this, more fertility trials are necessary to provide the definitive tool to ensure the antioxidant effectiveness on sperm quality. For this reason, in this work, we performed a multiparametric analysis of some previously tested antioxidants (crocin, GSH and Trolox) on ram sperm cryopreservation from field trials to sperm quality analyses focused on new strategies to measure redox balance. Attending to fertility trial, Trolox supplementation registered an improvement concerning to fertility (when we considered high fertility males) and multiple lambing frequency and other complementary and descriptive data related to lambing performance such as prolificacy and fecundity. This positive effect was more evident in multiple lambing frequency when we considered low fertility males than in global male analysis. In vitro analyses of sperm quality confirmed in vivo trials registering a positive effect on sperm viability and redox balance. In this study, we provided the definitive evidence that the role of trolox on redox balance maintenance has a direct effect on fertility parameters, such as prolificacy. The effectiveness of antioxidant treatments was tested, for the first time in ovine species, using an integrative and multiparametric approach combining in vivo and in vitro analyses and novel approaches, such as RedoxSYS. These types of strategies should be applied to improve sperm conservation methods and optimize AI technologies upgrading the correlation between in vitro and in vivo analyses.
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Sánchez-Rubio F, Soria-Meneses PJ, Jurado-Campos A, Bartolomé-García J, Gómez-Rubio V, Soler AJ, Arroyo-Jimenez MM, Santander-Ortega MJ, Plaza-Oliver M, Lozano MV, Garde JJ, Fernández-Santos MR. Nanotechnology in reproduction: Vitamin E nanoemulsions for reducing oxidative stress in sperm cells. Free Radic Biol Med 2020; 160:47-56. [PMID: 32768571 DOI: 10.1016/j.freeradbiomed.2020.07.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/12/2020] [Accepted: 07/17/2020] [Indexed: 01/12/2023]
Abstract
Vitamin E is considered a powerful biological antioxidant; however, its characteristics such as high hydrophobicity and low stability limit its application. We propose to use nanotechnology as an innovative tool in spermatology, formulating nanoemulsions (NE) that accommodate vitamin E, protecting it from oxidation and promoting its release into the medium. The protective effect of the NE against oxidative stress was assessed in red deer epididymal sperm incubated at 37 °C. Cryopreserved sperm from eleven stags were thawed and extended to 400 × 106 sperm/ml in Bovine Gamete Medium (BGM). Once aliquoted, the samples were supplemented with the NE at different concentrations (0, 6 and 12 mM), with or without induced oxidative stress (100 μM Fe2+/ascorbate). The samples were evaluated after 0, 2 and 4 h of incubation at 37 °C. Motility (CASA), viability, mitochondrial membrane potential, acrosomal status, lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (SCSA®) were assessed. After 2 and 4 h of incubation, the NE were able to prevent the deleterious effects of oxidative stress, thus improving total and progression motility (P ˂0.05). Moreover, the highest concentration tested (12 mM) improved almost every sperm kinematic variable (P ˂0.05) and preserved sperm viability in samples subjected to oxidative stress. In addition, 12 mM of NE protected the acrosomes integrity, maintained and protected mitochondrial activity, prevented sperm lipoperoxidation and reduced ROS production (P ˂0.05) in samples subjected to oxidative stress. This work indicates for the first time that vitamin E formulated in NE could be a new approach against sperm oxidative damage. This could be highly relevant for sperm physiology preservation in the context of assisted reproduction techniques.
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Affiliation(s)
- F Sánchez-Rubio
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Servicio de Farmacia Hospitalaria, Complejo Hospitalario Universitario de Albacete, GAI, Albacete, Spain
| | | | | | | | | | - A J Soler
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - M M Arroyo-Jimenez
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M J Santander-Ortega
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M Plaza-Oliver
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M V Lozano
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain.
| | - J J Garde
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - M R Fernández-Santos
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Faculty of Pharmacy, UCLM, Albacete, Spain.
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Zalazar L, Pagola P, Miró M, Churio M, Cerletti M, Martínez C, Iniesta-Cuerda M, Soler A, Cesari A, De Castro R. Bacterioruberin extracts from a genetically modified hyperpigmented Haloferax volcanii
strain: antioxidant activity and bioactive properties on sperm cells. J Appl Microbiol 2019; 126:796-810. [DOI: 10.1111/jam.14160] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 12/14/2022]
Affiliation(s)
- L. Zalazar
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - P. Pagola
- Departamento de Química; FCEyN (UNMDP); Mar del Plata Argentina
| | - M.V. Miró
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - M.S. Churio
- Departamento de Química; FCEyN (UNMDP); Mar del Plata Argentina
- IFIMAR; Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP); Mar del Plata Argentina
| | - M. Cerletti
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - C. Martínez
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - M. Iniesta-Cuerda
- SaBio IREC (CSIC-UCLM-JCCM). ETSIAM. Campus Universitario; Albacete Spain
| | - A.J. Soler
- SaBio IREC (CSIC-UCLM-JCCM). ETSIAM. Campus Universitario; Albacete Spain
| | - A. Cesari
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - R. De Castro
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
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6
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Sánchez-Rubio F, Fernández-Santos MR, Castro-Vázquez L, García-Álvarez O, Maroto-Morales A, Soler AJ, Martínez-Pastor F, Garde JJ. Cinnamtannin B-1, a novel antioxidant for sperm in red deer. Anim Reprod Sci 2018; 195:44-52. [PMID: 29776697 DOI: 10.1016/j.anireprosci.2018.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/19/2018] [Accepted: 05/03/2018] [Indexed: 01/14/2023]
Abstract
Cinnamtannin B-1 (CNB-1) is a naturally occurring trimeric A-type proanthocyanidin contained in several plants such as cinnamon (Cinnamomum zeylanicum). It is considered to be a potent antioxidant. The protective effect of CNB-1 against oxidative stress was assessed in red deer epididymal sperm incubated at 37 °C. Cryopreserved sperm from six stags were thawed, pooled and extended to 400 × 106 sperm/ml in BGM (bovine gamete medium). After being aliquoted, the samples were supplemented with different concentrations of CNB-1 (0, 0.1, 1, 10 and 100 μg/mL), with or without induced oxidative stress (100 μM Fe2+/ascorbate). The samples were evaluated after 0, 2 and 4 h of incubation at 37 °C. This experiment was replicated six times. Spermmotility (CASA), viability, mitochondrial membrane potential, acrosomal status, lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (TUNEL) were assessed. After 4 h of incubation, CNB-1 prevented the deleterious effects of oxidative stress, thus improved sperm progressivity and velocity (P<0.05). Furthermore, 1 and 10 μM CNB-1 improved sperm linearity, even when compared to those samples that had not been subjected to oxidative stress (P<0.05). The greatest concentration, 100 μM, prevented sperm lipoperoxidation and reduced ROS production in samples subjected to oxidative stress.
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Affiliation(s)
- F Sánchez-Rubio
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Servicio de Farmacia. Complejo Hospitalario Universitario de Albacete. GAI. Albacete, Spain
| | - M R Fernández-Santos
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Faculty of Pharmacy (UCLM), Albacete, Spain.
| | | | - O García-Álvarez
- Biomedical Center, Medical Faculty in Pilsen, Pilsen, Czech Republic
| | | | - A J Soler
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - F Martínez-Pastor
- Department of Molecular Biology (Cell Biology) and Institute for Animal Health and Cattle Development (INDEGSAL), University of León, León, Spain
| | - J J Garde
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
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7
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Anel-Lopez L, Ortega-Ferrusola C, Álvarez M, Borragán S, Chamorro C, Peña FJ, Morrell J, Anel L, de Paz P. Improving sperm banking efficiency in endangered species through the use of a sperm selection method in brown bear (Ursus arctos) thawed sperm. BMC Vet Res 2017. [PMID: 28651537 PMCID: PMC5485503 DOI: 10.1186/s12917-017-1124-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Sperm selection methods such as Single Layer Centrifugation (SLC) have been demonstrated to be a useful tool to improve the quality of sperm samples and therefore to increase the efficiency of other artificial reproductive techniques in several species. This procedure could help to improve the quality of genetic resource banks, which is essential for endangered species. In contrast, these sperm selection methods are optimized and focused on farm animals, where the recovery task is not as important as in endangered species because of their higher sperm availability. The aim of this study was to evaluate two centrifugation methods (300 x g/20 min and 600 x g/10 min) and three concentrations of SLC media (Androcoll-Bear −80, 65 and 50%) to optimise the procedure in order to recover as many sperm with the highest quality as possible. Sperm morphology could be important in the hydrodynamic relationship between the cell and centrifugation medium and thus the effect of sperm head morphometry on sperm yield and its hydrodynamic relationship were studied. Results The samples selected with Androcoll-Bear 65% showed a very good yield (53.1 ± 2.9) although the yield from Androcoll-Bear 80% was lower (19.3 ± 3.3). The latter showed higher values of motility than the control immediately after post-thawing selection. However, both concentrations of colloid (65 and 80%) showed higher values of viable sperm and viable sperm with intact acrosome than the control. After an incubation of 2 h at 37 °C, the samples from Androcoll-Bear 80% had higher kinematics and proportion of viable sperm with intact acrosome. In the morphometric analysis, the sperm selected by the Androcoll-Bear 80% showed a head with a bigger area which was more elongated than the sperm from other treatments. Conclusions We conclude that sperm selection with Androcoll-Bear at either 65% or 80% is a suitable technique that allows a sperm population with better quality than the initial sample to be obtained. We recommend the use of Androcoll-Bear 65% since the yield is better than Androcoll-Bear 80%. Our findings pave the way for further research on application of sperm selection techniques to sperm banking in the brown bear. Electronic supplementary material The online version of this article (doi:10.1186/s12917-017-1124-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- L Anel-Lopez
- Animal Reproduction and Obstetrics, University of León, León, Spain. .,ITRA-ULE, INDEGSAL, University of León, 24071, León, Spain.
| | - C Ortega-Ferrusola
- Animal Reproduction and Obstetrics, University of León, León, Spain.,ITRA-ULE, INDEGSAL, University of León, 24071, León, Spain
| | - M Álvarez
- Animal Reproduction and Obstetrics, University of León, León, Spain.,ITRA-ULE, INDEGSAL, University of León, 24071, León, Spain
| | | | - C Chamorro
- Veterinary Anatomy, University of Leon, 24071, León, Spain
| | - F J Peña
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - J Morrell
- Swedish University of Agricultural Sciences (SLU), Clinical Sciences, Uppsala, Sweden
| | - L Anel
- Animal Reproduction and Obstetrics, University of León, León, Spain.,ITRA-ULE, INDEGSAL, University of León, 24071, León, Spain
| | - P de Paz
- ITRA-ULE, INDEGSAL, University of León, 24071, León, Spain.,Molecular Biology (Cell Biology), University of León, León, Spain
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8
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Eslami M, Ghasemiyan H, Zadeh Hashem E. Semen supplementation with palmitoleic acid promotes kinematics, microscopic and antioxidative parameters of ram spermatozoa during liquid storage. Reprod Domest Anim 2016; 52:49-59. [DOI: 10.1111/rda.12802] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 08/19/2016] [Indexed: 11/29/2022]
Affiliation(s)
- M Eslami
- Department of Theriogenology; Faculty of Veterinary Medicine; Urmia University; Urmia Iran
| | - H Ghasemiyan
- Department of Theriogenology; Faculty of Veterinary Medicine; Urmia University; Urmia Iran
| | - E Zadeh Hashem
- Department of Basic Sciences; Faculty of Veterinary Medicine; Urmia University; Urmia Iran
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