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Efecto del plasma seminal sobre el estado redox del semen equino criopreservado

Efecto del plasma seminal sobre el estado redox del semen equino criopreservado



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Cómo citar
Pizarro L, E., Restrepo B, G., Echeverry Z, J., & Rojano, B. (2013). Efecto del plasma seminal sobre el estado redox del semen equino criopreservado. Revista MVZ Córdoba, 18(supl), 3672-3680. https://doi.org/10.21897/rmvz.134

Dimensions
PlumX
Edison Pizarro L
Giovanni Restrepo B
José Echeverry Z
Benjamín Rojano

RESUMEN

Objetivo. Determinar el efecto del plasma seminal sobre la generación de especies reactivas de oxígeno (ERO) y la peroxidación lipídica de semen equino criopreservado y su asociación con parámetros de calidad seminal. Materiales y métodos. El semen de cinco caballos de la raza criollo colombiano (dos eyaculados cada uno), fue criopreservado mediante un protocolo de congelación rápida, empleando un diluyente leche-yema de huevo, suplementado con 0%, 10% y 20% de plasma seminal equino. En muestras de semen fresco y criopreservado se evaluó la generación de ERO y la peroxidación lipídica por espectrofluorimetría, y los parámetros de calidad seminal de movilidad progresiva, vitalidad e integridad de membrana, mediante microscopia de contraste de fase. Para el análisis estadístico se ajustaron modelos mixtos y se realizaron análisis de regresión y correlación. Resultados. Se hallaron promedios post-descongelación de movilidad progresiva, vitalidad e integridad de membrana de 37.8%±20.2, 50.6% ± 14.6 y 37.8% ± 15.5, respectivamente. Para el semen fresco y criopreservado suplementado con 0%, 10% y 20% de plasma seminal, los promedios de producción de ERO (URF) fueron de 13.34±10.7, 16.15 ± 13.5, 17.32 ± 16 y 22.98 ± 19.4, respectivamente; mostrando un incremento estadísticamente significativo (p≤0.05) en la producción de ERO por efecto de la criopreservación y la suplementación con plasma seminal. Los promedios de peroxidación lipídica (nmolMDA/ml) para estos mismos tratamientos, fueron de 0.41 ± 0.25, 0.72±0.37, 0.51 ± 0.29 y 0.47±0.26, respectivamente; mostrando una reducción significativa (p≤0.05) de la peroxidación lipídica del semen suplementado con 10% y 20% de plasma seminal, respecto al semen no suplementado (0%). Conclusiones. El plasma seminal reduce la peroxidación lipídica del semen equino criopreservado


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