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Related Experiment Video

Updated: Jun 2, 2026

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa

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Published on: March 11, 2018

Boar sperm functionality is related to α-tocopherol content after freezing-thawing.

E Breininger¹, A Descalzo, L Rossetti

¹Cátedra de Química Biológica, Instituto de Investigación y Tecnología en Reproducción Animal, Facultad de Ciencias Veterinarias, UBA, Buenos Aires, Argentina. ebreininger@fvet.uba.ar

|April 14, 2011

Summary

Antioxidants like alpha-tocopherol and 17β-oestradiol improve boar sperm cryopreservation. They reduce oxidative damage, enhancing sperm motility and function after freezing.

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Area of Science:

Reproductive Biology
Oxidative Stress Research
Cryopreservation Science

Background:

Boar spermatozoa are vulnerable to oxidative damage during cryopreservation, impairing their functionality.
Oxidative stress negatively impacts sperm motility, viability, and fertilizing capacity.

Purpose of the Study:

To investigate the role of antioxidants, specifically alpha-tocopherol and 17β-oestradiol, in mitigating cryopreservation-induced damage in boar spermatozoa.
To evaluate the impact of these antioxidants on sperm parameters and capacitation-like changes.

Main Methods:

Boar spermatozoa were cryopreserved with alpha-tocopherol, 17β-oestradiol, or seminal plasma.
Sperm parameters, including motility, lipid peroxidation, and capacitation-like changes, were assessed.
Hormone and antioxidant concentrations (17β-oestradiol and alpha-tocopherol) were quantified using RIA and HPLC, respectively.

Main Results:

Antioxidant treatment significantly improved sperm motility while reducing lipid peroxidation and capacitation-like changes (P < 0.05).
Increased concentrations of 17β-oestradiol were observed in samples treated with 17β-oestradiol or seminal plasma.
Alpha-tocopherol levels increased in supplemented samples, suggesting potential synergistic effects or regeneration mechanisms.

Conclusions:

Alpha-tocopherol and 17β-oestradiol enhance the functionality of cryopreserved boar spermatozoa by reducing oxidative stress.
Seminal plasma components may contribute to the regeneration of alpha-tocopherol's antioxidant capacity.
Supplementation with antioxidants offers a promising strategy to improve boar sperm cryopreservation outcomes.