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Žaja IŽ, Berta V, Valpotić H, Samardžija M, Milinković-Tur S, Vilić M, Šuran J, Hlede JP, Đuričić D, Špoljarić B, Špoljarić D, Vince S. The influence of exogenous melatonin on antioxidative status in seminal plasma and spermatozoa in French Alpine bucks during the nonbreeding season. Domest Anim Endocrinol 2020; 71:106400. [PMID: 31809949 DOI: 10.1016/j.domaniend.2019.106400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/22/2019] [Accepted: 09/19/2019] [Indexed: 01/15/2023]
Abstract
Research data regarding exogenous melatonin effects on buck semen antioxidative status during the breeding and nonbreeding seasons are scarce or missing. The aim of this study was to investigate the effect of melatonin implants on the activity and ratios of antioxidative enzymes and on malondialdehyde concentrations in the seminal plasma and spermatozoa of French Alpine bucks during the 3 mo of the nonbreeding season. Two groups of randomly assigned bucks were either treated with melatonin (n = 6) or served as controls (n = 6). Semen samples were collected weekly, seminal plasma was separated from spermatozoa, and activities of glutathione peroxidase (GSH-Px), glutathione reductase (GR), superoxide dismutase (SOD), catalase (CAT), and the concentration of malondialdehyde were determined. The melatonin-treated bucks had significantly higher CAT/SOD and GSH-Px/SOD ratios, but a significantly lower GR/GSH-Px ratio in seminal plasma and spermatozoa during the different periods of the nonbreeding season. In conclusion, exogenous melatonin influenced the activities of all ratios and some single antioxidative enzymes tested in bucks' seminal plasma and spermatozoa. Here we provide the first evidence derived from an intervention, that is, melatonin treatment, which affects antioxidative enzymes ratios in the semen of bucks, and could thus be recommended as an indicator of oxidative stress severity and antioxidative status of semen.
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Affiliation(s)
- I Ž Žaja
- Department of Physiology and Radiobiology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - V Berta
- Veterinary Practice Varaždin, 42000 Varaždin, Croatia
| | - H Valpotić
- Department of Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - M Samardžija
- Clinic for Reproduction and Obstetrics, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - S Milinković-Tur
- Department of Physiology and Radiobiology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - M Vilić
- Department of Physiology and Radiobiology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - J Šuran
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - J P Hlede
- Department of Physiology and Radiobiology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - D Đuričić
- Veterinary Practice Đurđevac, Malinov trg 7, 48350 Đurđevac, Croatia
| | - B Špoljarić
- Clinic for Reproduction and Obstetrics, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - D Špoljarić
- Department of Veterinary Biology, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - S Vince
- Clinic for Reproduction and Obstetrics, Faculty of Veterinary Medicine, University of Zagreb, 10 000 Zagreb, Croatia.
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