Antioxidants and their effect on the oxidative/nitrosative stress of frozen-thawed boar sperm

In swine, the use of frozen-thawed boar sperm for artificial insemination remains a suboptimal reproductive technology. Among the negative effects of cryopreservation on sperm cells, it is worth highlighting that cryopreservation causes irreversible alterations in motility and components of the sper...

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Bibliographic Details
Published in:Cryobiology 2021-02, Vol.98, p.5-11
Main Authors: Pezo, Felipe, Yeste, Marc, Zambrano, Fabiola, Uribe, Pamela, Risopatrón, Jennie, Sánchez, Raúl
Format: Article
Language:English
Subjects:
Animals
Antioxidants
Antioxidants - metabolism
Boar
Cryopreservation - methods
Freezing
Male
Nitrosative Stress
Reactive nitrogen species
Reactive oxygen species
Semen Preservation - veterinary
Sperm cryopreservation
Sperm Motility
Spermatozoa
Spermatozoa - metabolism
Swine
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Summary:In swine, the use of frozen-thawed boar sperm for artificial insemination remains a suboptimal reproductive technology. Among the negative effects of cryopreservation on sperm cells, it is worth highlighting that cryopreservation causes irreversible alterations in motility and components of the sperm membrane as a result of dramatic changes in temperature (cooling/freezing curve) and osmolality. In addition, freeze-thawing may induce oxidative stress and increase the generation of reactive oxygen species (ROS) and nitrogen reactive species (RNS). While boar sperm cryopreservation has been reported to increase lipid peroxidation and the intracellular levels of hydrogen peroxide, less research on its impact on RNS has been conducted. Furthermore, previous studies have investigated the effects of supplementing cryopreservation media with antioxidants to counteract the deleterious effects of ROS and RNS. Antioxidants of synthetic origin or natural extracts have been used, with some showing noticeable and positive effects on functional sperm parameters both in vitro and in vivo. The aim of this review is to provide an update on the effect of different molecules with antioxidant capacity on the function of cryopreserved boar sperm. •Oxidative/nitrosative stress produces a deleterious effect on frozen-thawed boar sperm.•Supplementation of media with synthetic antioxidants improves sperm function.•Also, natural extracts added to the mediaact as reducing agents.•There is a need to gather more background on nitrosative/oxidative stress.
ISSN:0011-2240
1090-2392
DOI:10.1016/j.cryobiol.2020.11.007