Cryopreservation effect on sperm viability, mitochondrial membrane potential, acrosome integrity and sperm capacitation of alpaca spermatozoa detected by imaging flow cytometry

Alexei Santiani, Javier Juárez, Pablo Allauca, Brian Roman, Alejandra Ugarelli, Shirley Evangelista-Vargas

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Resumen

Eighty-five sperm samples were cryopreserved and SYBR14/PI, MitoTracker Deep Red FM, FITC-PSA/PI and chlortetracycline were used for imaging flow cytometry evaluation of sperm viability, mitochondrial membrane potential (MMP), acrosome integrity and sperm capacitation, respectively. Sperm motility was also registered. Sperm motility (46.1 ± 7.7 vs. 24.1% ± 6.5%), sperm viability (49.8 ± 11.5 vs. 32.3% ± 9.6%) and high MMP (49.8% ± 12.4% vs. 34.9% ± 9.9%) decreased significantly (p <.05) during cryopreservation process, in contrast to acrosome-reacted in viable spermatozoa (1.0% ± 1.6% vs. 1.0% ± 1.0%) and sperm capacitation (10.0 ± 9.8 vs. 8.2% ± 12.4%) that were similar (p >.05) before and after cryopreservation. Positive correlations were found between sperm motility versus high MMP (r =.63), sperm motility versus sperm viability (r =.67) and sperm viability versus high MMP (r =.88). In conclusion, cryopreservation of alpaca spermatozoa is related to a decrease in sperm motility, sperm viability and high MMP, meanwhile acrosome integrity and sperm capacitation are not affected.

Idioma originalInglés
Páginas (desde-hasta)560-563
Número de páginas4
PublicaciónReproduction in Domestic Animals
Volumen58
N.º4
DOI
EstadoPublicada - abr. 2023

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