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Relationship between biochemical parameters and paraoxonase 1 activity of boar seminal plasma and semen quality

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Abstract

The aim of this study was to examine the biochemical components and the parameters of antioxidant protection in the seminal plasma (SP) of boars, as well as their relationship with semen quality parameters. Thirty-six boars were included in the study, whose ejaculates were divided into two groups: Group I (good quality semen, > 70% progressively motile sperm, < 20% spermatozoa with abnormal morphology, n = 16), and Group II (poor quality semen, < 70% progressively motile sperm, > 20% spermatozoa with abnormal morphology, n = 20). Significantly higher concentrations of ionized calcium (iCa), total cholesterol (TC), lactate-dehydrogenase (LDH) activity, as well as significantly higher values ​​of antioxidant protection parameters: thiol groups (-SH), paraoxonase 1 (PON1), and total antioxidant capacity (TAC) ) were found in the good quality semen, while higher phosphorus (P) concentrations and increased alkaline-phosphatase (ALP) activity were found in the semen of poor quality. A negative correlation of total and progressive sperm motility with P and ALP was found in all examined semen samples, while a positive correlation was found with PON1 and TAC. The percentage of fast sperm cells positively correlated with iCa, chlorine (Cl), lactate, LDH and TAC, while a negative correlation was found with P, magnesium (Mg) and the enzyme creatine-kinase (CK). The percentage of immobile sperm positively correlated with P and ALP, and negatively correlated with TC, CK, PON1 and TAC. Elevated values ​​of PON1 and TAC in SP and a positive correlation with sperm motility indicate the possible use of these parameters as sensitive biomarkers of boar semen quality. To the best of our knowledge there are no published data on association between PON1 activity and boar semen quality.

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Data aviability statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The study was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Contract number 451-03-68/2022-14/200143).

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Svetlana Nedić: Conceptualization, Methodology, Visualisation, Writing, Miloje Đurić: Methodology, Slobodanka Vakanjac: Conceptualization, Visualisation, Writing, Sveta Arsić: Methodology, Sreten Nedić: Methodology, Marko Samardžija: Visualisation, Sunčica Borozan: Conceptualization, Methodology, Visualisation, Writing. All authors approved the final version of this article.

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Correspondence to Svetlana Nedić.

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The authors declared that there are no conflicts of interest.

Ethics approval

Approval of this study was obtained from the Ethics Commission for Experimental Animal Welfare Protection of the Faculty of Veterinary Medicine, University of Belgrade, Serbia (Opinion No° 8/2022). The research protocol and animal management were in compliance with the Directive 2010/63/ EU of the European Parliament (2010) on the protection of animals used for scientific purposes.

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*Svetlana Nedić and Miloje Đurić contributed equaly to this work.

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Nedić, S., Đurić, M., Vakanjac, S. et al. Relationship between biochemical parameters and paraoxonase 1 activity of boar seminal plasma and semen quality. Vet Res Commun 47, 1243–1253 (2023). https://doi.org/10.1007/s11259-022-10066-x

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