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Peña-Delgado V, Noya A, Carvajal-Serna M, Abecia JA, Pérez-Pe R, Casao A. Differential effect of melatonin on ram spermatozoa depending on the allelic variant of the RsaI polymorphism of the MTR1A gene, incubation medium and season. Reprod Fertil Dev 2024; 36:NULL. [PMID: 38905444 DOI: 10.1071/rd23233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 06/03/2024] [Indexed: 06/23/2024] Open
Abstract
Context The Rsa I polymorphism of the melatonin receptor MTNR1A gene affects seasonal reproduction in sheep, but its effect on ram spermatozoa and their response to melatonin is unknown. Aims This study aims to evaluate whether Rsa I polymorphism of the MTNR1A gene influences the response of ram spermatozoa to in vitro added melatonin. Methods Spermatozoa from rams carrying different Rsa I allelic variants were incubated with melatonin in a TALP medium or a capacitation-triggering medium during the reproductive and non-reproductive seasons. After incubation, sperm motility, membrane integrity, mitochondria activity, oxidative damage, apoptotic markers and capacitation status were assessed. Key results In the reproductive season, the T/T genotype was related to some adverse effects of melatonin when spermatozoa were incubated in TALP medium, whereas the C/C genotype was linked with adverse effects when the hormone was added in a capacitation-triggering medium. The decapacitating effect of melatonin on spermatozoa was also different depending on genotype. Conclusions The melatonin effect on spermatozoa from rams carrying different Rsa I genotypes differed depending on the season and the medium. Implications The knowledge of the Rsa I allelic variant of the MTNR1A gene of rams could be helpful when carrying out in vitro reproductive techniques in the ovine species.
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Affiliation(s)
- Victoria Peña-Delgado
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Agustí Noya
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Melissa Carvajal-Serna
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - José A Abecia
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Rosaura Pérez-Pe
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Adriana Casao
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
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Lavrentiadou SN, Sapanidou V, Tzekaki EE, Margaritis I, Tsantarliotou MP. Melatonin Protects Bovine Spermatozoa by Reinforcing Their Antioxidant Defenses. Animals (Basel) 2023; 13:3219. [PMID: 37893943 PMCID: PMC10603642 DOI: 10.3390/ani13203219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/07/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Cryopreserved semen is widely used in assisted reproductive techniques. Post-thawing spermatozoa endure oxidative stress due to the high levels of reactive oxygen and nitrogen species, which are produced during the freezing/thawing process, and the depletion of antioxidants. To counteract this depletion, supplementation of sperm preparation medium with antioxidants has been widely applied. Melatonin is a hormone with diverse biological roles and a potent antioxidant, with an ameliorative effect on spermatozoa. In the present study, we assessed the effect of melatonin on thawed bovine spermatozoa during their handling. Cryopreserved bovine spermatozoa were thawed and incubated for 60 min in the presence or absence of 100 μΜ melatonin. Also, the effect of melatonin was assessed on spermatozoa further challenged by the addition of 100 μΜ hydrogen peroxide. Spermatozoa were evaluated in terms of kinematic parameters (CASA), viability (trypan blue staining) and antioxidant capacity (glutathione and NBT assay, determination of iNOS levels by Western blot analysis). In the presence of melatonin, spermatozoa presented better kinematic parameters, as the percentage of motile and rapid spermatozoa was higher in the melatonin group. They also presented higher viability and antioxidant status, as determined by the increased cellular glutathione levels and the decreased iNOS protein levels.
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Affiliation(s)
- Sophia N. Lavrentiadou
- Laboratory of Physiology, Department of Animal Structure and Function, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (V.S.); (I.M.); (M.P.T.)
| | - Vasiliki Sapanidou
- Laboratory of Physiology, Department of Animal Structure and Function, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (V.S.); (I.M.); (M.P.T.)
| | - Elena E. Tzekaki
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece;
| | - Ioannis Margaritis
- Laboratory of Physiology, Department of Animal Structure and Function, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (V.S.); (I.M.); (M.P.T.)
| | - Maria P. Tsantarliotou
- Laboratory of Physiology, Department of Animal Structure and Function, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (V.S.); (I.M.); (M.P.T.)
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Sapanidou V, Tsantarliotou MP, Lavrentiadou SN. A review of the use of antioxidants in bovine sperm preparation protocols. Anim Reprod Sci 2023; 251:107215. [PMID: 37001221 DOI: 10.1016/j.anireprosci.2023.107215] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/28/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
Reactive oxygen species (ROS) and oxidative stress (OS), the imbalance between the production of free radicals and the cellular antioxidant defenses, are discussed in relation to their role in bovine sperm physiology. Oxidative stress has been associated to male infertility and low fertility rates in Assisted Reproductive Techniques (ART). Antioxidant supplementation is an interesting approach to overcome OS-related infertility and assisted reproduction drawbacks. Several studies have been conducted to identify the potential sources of ROS in a typical ART setting and the impact of antioxidant supplementation on semen quality and pregnancy outcome. Procedures such as freezing and thawing, centrifugation and incubation are thought to produce significant amounts of ROS with a negative impact on sperm quality parameters and reproductive competence. Given the important role of ROS in sperm function, the addition of antioxidants in sperm media to prevent OS and to improve the reproductive outcome requires attention. Currently, there is limited evidence to support the ameliorative effect of antioxidant supplementation on fertilization and embryo development in farm animals. This review summarizes the different types and concentrations of antioxidants used in sperm preparation media of bovine species and their effectiveness in neutralizing excessive ROS production while preserving physiological sperm function.
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Miguel-Jiménez S, Carvajal-Serna M, Peña-Delgado V, Casao A, Pérez-Pe R. Effect of melatonin and nitric oxide on capacitation and apoptotic changes induced by epidermal growth factor in ram sperm. Reprod Fertil Dev 2023; 35:282-293. [PMID: 36403503 DOI: 10.1071/rd22146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/17/2022] [Indexed: 11/21/2022] Open
Abstract
CONTEXT Apart from the canonical cAMP-PKA pathway, ram sperm capacitation can be achieved by the MAPK ERK1/2 signalling cascade, activated by epidermal growth factor (EGF). AIMS This study aims to investigate the effect of melatonin and nitric oxide (NO·) on capacitation and apoptotic-like changes in EGF-capacitated ram spermatozoa. METHODS In vitro capacitation was induced by EGF in the absence or presence of melatonin (100pM or 1μM). Also, a NO· precursor, L-arginine, or a NOS inhibitor, NG-nitro-L-arginine methyl ester (L-NAME), were added to capacitation media to study the interaction of NO· and melatonin during EGF-capacitation. Sperm functionality parameters (motility, viability, capacitation state), apoptotic markers (caspase activation and DNA damage), NO· levels, and phosphorylated c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (assessed by Western blot), were evaluated in swim-up and capacitated samples with EGF. KEY RESULTS NO· levels and the apoptotic-related markers were raised after EGF incubation. Melatonin had a bimodal role on sperm EGF-capacitation, preventing it at high concentration and promoting acrosome reaction at low concentration, but neither of the two concentrations prevented the increase in apoptotic-like markers or NO· levels. However, melatonin at 1μM prevented the activation of JNK. CONCLUSIONS NO· metabolism does not seem to modulate the apoptosis-like events in ram spermatozoa. Melatonin at 1μM prevents ram sperm capacitation induced by EGF independently from nitric oxide metabolism, and it could be exerted by limiting the JNK mitogen-activated protein kinase (MAPK) activation. IMPLICATIONS This study improvesour understanding of the biochemical mechanisms involved in sperm capacitation, and ultimately, fertility.
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Affiliation(s)
- Sara Miguel-Jiménez
- 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, Zaragoza 50013, Spain
| | - Melissa Carvajal-Serna
- 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, Zaragoza 50013, Spain
| | - Victoria Peña-Delgado
- 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, Zaragoza 50013, Spain
| | - Adriana Casao
- 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, Zaragoza 50013, Spain
| | - Rosaura Pérez-Pe
- 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, Zaragoza 50013, Spain
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Fernández‐Alegre E, Lacalle E, Soriano‐Úbeda C, Carlos Domínguez J, Casao A, Martínez‐Pastor F. Melatonin affects red deer spermatozoa motility and physiology in capacitating and non-capacitating conditions. Reprod Domest Anim 2022; 57 Suppl 5:82-85. [PMID: 35488500 PMCID: PMC9790586 DOI: 10.1111/rda.14137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/07/2022] [Accepted: 04/25/2022] [Indexed: 12/30/2022]
Abstract
Melatonin affects sperm physiology, possibly through membrane receptors. Effects were tested at low concentrations (1 pM, 100 pM, 10 nM and 1 µM) in red deer epididymal spermatozoa as a model for high-seasonality species. Samples were incubated with melatonin as uncapacitated or capacitating conditions (heparin) and evaluated for motility and physiology (flow cytometry). Most effects occurred at low concentrations (nM-pM), mainly protecting from apoptosis and maintaining acrosomal integrity, suggesting a role for membrane receptors rather than a direct antioxidant effect. Intracellular calcium was not affected, differing from other studies and perhaps because of the epididymal origin. This study supports the relevance of melatonin on sperm physiology and could contribute to the application of reproductive technologies in wild ruminants.
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Affiliation(s)
| | | | - Cristina Soriano‐Úbeda
- Institute for Animal Health and Cattle Development (INDEGSAL) and IMAPOR Research GroupUniversidad de LeónLeónSpain,Department of Molecular Biology (Cell Biology)Universidad de LeónLeónSpain
| | - Juan Carlos Domínguez
- Institute for Animal Health and Cattle Development (INDEGSAL) and IMAPOR Research GroupUniversidad de LeónLeónSpain,Department of Animal Medicine, Surgery and Anatomy (Animal Medicine and Surgery)University of LeónLeónSpain
| | - Adriana Casao
- Department of Biochemistry and Molecular and Cell BiologyInstitute of Environmental Sciences of AragónSchool of Veterinary MedicineUniversity of ZaragozaZaragozaSpain
| | - Felipe Martínez‐Pastor
- Institute for Animal Health and Cattle Development (INDEGSAL) and IMAPOR Research GroupUniversidad de LeónLeónSpain,Department of Molecular Biology (Cell Biology)Universidad de LeónLeónSpain
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Fernández-Alegre E, Lacalle E, Soriano-Úbeda C, González-Montaña JR, Domínguez JC, Casao A, Martínez-Pastor F. Bos taurus and Cervus elaphus as Non-Seasonal/Seasonal Models for the Role of Melatonin Receptors in the Spermatozoon. Int J Mol Sci 2022; 23:ijms23116284. [PMID: 35682961 PMCID: PMC9181011 DOI: 10.3390/ijms23116284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/28/2022] [Accepted: 06/01/2022] [Indexed: 02/04/2023] Open
Abstract
Melatonin is crucial in reproduction due its antioxidant, hormonal, and paracrine action. Melatonin membrane receptors (MT1/MT2) have been confirmed on spermatozoa from several species, but functionality studies are scarce. To clarify their role in ruminants as reproductive models, bull (Bos taurus, non-seasonal) and red deer (Cervus elaphus, highly seasonal) spermatozoa were analyzed after 4 h of incubation (38 °C, capacitating media) in 10 nM melatonin, MT1/MT2 agonists (phenylmelatonin and 8M-PDOT), and antagonists (luzindole and 4P-PDOT). Motility and functionality (flow cytometry: viability, intracellular calcium, capacitation status, reactive oxygen species (ROS) production, and acrosomal and mitochondrial status) were assessed. In bull, MT1 was related to sperm viability preservation, whereas MT2 could modulate cell functionality to prevent excess ROS produced by the mitochondria; this action could have a role in modulating sperm capacitation. Deer spermatozoa showed resistance to melatonin and receptor activation, possibly because the samples were of epididymal origin and collected at the breeding season's peak, with high circulating melatonin. However, receptors could be involved in mitochondrial protection. Therefore, melatonin receptors are functional in the spermatozoa from bull and deer, with different activities. These species offer models differing from traditional laboratory experimental animals on the role of melatonin in sperm biology.
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Affiliation(s)
- Estela Fernández-Alegre
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Bianor Biotech SL, 24071 Leon, Spain
| | - Estíbaliz Lacalle
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Bianor Biotech SL, 24071 Leon, Spain
| | - Cristina Soriano-Úbeda
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Department of Molecular Biology (Cell Biology), University of León, 24071 Leon, Spain
| | - José Ramiro González-Montaña
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Department of Medicine, Surgery and Veterinary Anatomy (Animal Medicine and Surgery), University of León, 24071 Leon, Spain
| | - Juan Carlos Domínguez
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Department of Medicine, Surgery and Veterinary Anatomy (Animal Medicine and Surgery), University of León, 24071 Leon, Spain
| | - Adriana Casao
- Department of Biochemistry and Molecular and Cell Biology, Institute of Environmental Sciences of Aragón, School of Veterinary Medicine, University of Zaragoza, 50013 Zaragoza, Spain;
| | - Felipe Martínez-Pastor
- Institute of Animal Health and Cattle Development (INDEGSAL), University of León, 24071 Leon, Spain; (E.F.-A.); (E.L.); (C.S.-Ú.); (J.R.G.-M.); (J.C.D.)
- Department of Molecular Biology (Cell Biology), University of León, 24071 Leon, Spain
- Correspondence: ; Tel.: +34-987-291-491
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7
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Ofosu J, Qazi IH, Fang Y, Zhou G. Use of melatonin in sperm cryopreservation of farm animals: A brief review. Anim Reprod Sci 2021; 233:106850. [PMID: 34537566 DOI: 10.1016/j.anireprosci.2021.106850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 12/30/2022]
Abstract
Melatonin (MT) is a potent antioxidant with useful applications in several fields. Due to the capacity to scavenge free radicals and enhance cellular endogenous antioxidant defenses, MT is widely used in sperm cryopreservation to protect against oxidative stress-induced damage in frozen-thawed sperm. In this article, there is a review of positive effects of MT supplementation in cryopreservation of sperm from domestic ruminants and swine. There is direct or indirect scavenging of free radicals, preventing lipid peroxidation (LPO), and reducing oxidative stress, therefore, protecting membrane and DNA integrity, enhancing post-thaw antioxidant and enzymatic functions to maintain mitochondrial functions and activity, and regulating ATP production and utilization leading to maintenance of sperm quality, motility, and viability. In addition, MT reportedly inhibits sperm apoptosis, potentially by enhancing sperm viability and modulating abundances of mRNA transcripts.
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Affiliation(s)
- Jones Ofosu
- College of Animal Science and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Izhar Hyder Qazi
- College of Animal Science and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Department of Veterinary Anatomy and Histology, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand 67210, Sindh, Pakistan
| | - Yi Fang
- Jilin Provincial Key Laboratory of Grassland Farming, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guangbin Zhou
- College of Animal Science and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
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Gutiérrez-Añez JC, Henning H, Lucas-Hahn A, Baulain U, Aldag P, Sieg B, Hensel V, Herrmann D, Niemann H. Melatonin improves rate of monospermic fertilization and early embryo development in a bovine IVF system. PLoS One 2021; 16:e0256701. [PMID: 34473747 PMCID: PMC8412339 DOI: 10.1371/journal.pone.0256701] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 08/12/2021] [Indexed: 01/09/2023] Open
Abstract
The developmental competence of male and female gametes is frequently reduced under in vitro conditions, mainly due to oxidative stress during handling. The amino-acid derived hormone melatonin has emerged as a potent non-enzymatic antioxidant in many biological systems. The goal of the present study was to evaluate the effects of melatonin on post-thaw sperm quality, fertilizing ability, and embryo development and competence in vitro after in vitro fertilization. Frozen-thawed bovine spermatozoa were incubated either in the presence of 10−11 M melatonin (MT), or its solvent (ethanol; Sham-Control), or plain Tyrode’s Albumin Lactate Pyruvate medium (TALP, Control). Computer-Assisted Sperm Analysis (CASA) and flow cytometry data after 30 min, 120 min, and 180 min incubation did not reveal any significant effects of melatonin on average motility parameters, sperm subpopulation structure as determined by hierarchical cluster, or on the percentage of viable, acrosome intact sperm, or viable sperm with active mitochondria. Nevertheless, in vitro matured cumulus-oocyte-complexes fertilized with spermatozoa which had been preincubated with 10−11 M melatonin (MT-Sperm) showed higher (P < 0.01) rates of monospermic fertilization, reduced (P < 0.05) polyspermy and enhanced (P < 0.05) embryo development compared to the Control group. Moreover, the relative abundance of MAPK13 in the in vitro-derived blastocysts was greater (P < 0.05) than observed in the Control group. In conclusion, adding melatonin to the sperm-preparation protocol for bovine IVF improved proper fertilization and enhanced embryonic development and competence in vitro.
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Affiliation(s)
- Juan Carlos Gutiérrez-Añez
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
- Medical-Surgical Department, College of Veterinary Medicine, University of Zulia, Maracaibo, Venezuela
- * E-mail: , (JCGA); (HN)
| | - Heiko Henning
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Andrea Lucas-Hahn
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Ulrich Baulain
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Patrick Aldag
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Birgit Sieg
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Vivian Hensel
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Doris Herrmann
- Institute of Farm Animal Genetics, Friedrich Loeffler Institut (FLI), Mariensee, Germany
| | - Heiner Niemann
- Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover Medical School (MHH), Hannover, Germany
- * E-mail: , (JCGA); (HN)
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9
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Salman A, Caamaño JN, Fernández-Alegre E, Hidalgo CO, Nadri T, Tamargo C, Fueyo C, Fernández Á, Merino MJ, Martínez-Pastor F. Supplementation of the BIOXcell extender with the antioxidants crocin, curcumin and GSH for freezing bull semen. Res Vet Sci 2021; 136:444-452. [PMID: 33812287 DOI: 10.1016/j.rvsc.2021.03.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 02/28/2021] [Accepted: 03/25/2021] [Indexed: 11/18/2022]
Abstract
Semen cryopreservation is routine in cattle, but the results of artificial insemination need improvement. A strategy to these aims is the supplementation of the freezing extender with novel antioxidants. This study aimed at testing the natural antioxidants curcumin and crocin as supplements to the commercial extender BIOXcell for freezing semen from 8 Holstein bulls. We tested curcumin at 0.05 and 0.1 mM (CU0.05, CU0.1) and crocin at 0.5 and 1.5 mM (CR0.5, CR1.5), with 0.5 mM reduced glutathione (GSH0.5) as reference, and a control (CTL, without supplementation). The samples were evaluated post-thawing and after 5 h at 38 °C by CASA for motility and flow cytometry for viability, apoptotic, capacitation, acrosomal status, cytoplasmic and mitochondrial reactive oxygen species (ROS) production, and chromatin status (SCSA). Control and GSH0.5 showed similar results, possibly because of the good protection from BIOXcell. CU0.05 and CU0.1 showed little effects but increased cytoplasmic ROS production and motility ALH. CR0.5 and CR1.5 decreased viability and increased apoptotic features significantly post-thawing and after the incubation, resulting in lower motility (significant after the incubation) but decreasing SCSA %HDS (loose chromatin). Whereas crocin at these concentrations seems incompatible with BIOXcell, maybe because of a prooxidant activity, curcumin use merits further research, considering the elevation of ROS with no significant negative effects.
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Affiliation(s)
- Amer Salman
- INDEGSAL, Universidad de León, 24071 León, Spain
| | | | | | | | - Touba Nadri
- Department of Animal Science, College of Agriculture and Natural Resource, University of Tehran, Karaj, Iran
| | | | | | | | | | - Felipe Martínez-Pastor
- INDEGSAL, Universidad de León, 24071 León, Spain; Molecular Biology (Cell Biology), Universidad de León, 24071 León, Spain.
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