Influence of in vitro capacitation time on structural and functional human sperm parameters
| Autor: | Paula Sáez-Espinosa, Natalia Huerta-Retamal, Laura Robles-Gómez, Manuel Avilés, Jon Aizpurua, Irene Velasco, Alejandro Romero, María José Gómez-Torres |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Asian Journal of Andrology, Vol 22, Iss 5, Pp 447-453 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1008-682X 1745-7262 |
| DOI: | 10.4103/aja.aja_104_19 |
| Popis: | A cascade of dramatic physiological events is linked to the sperm acrosome reaction and binding to the oocyte's zona pellucida during human sperm capacitation. However, structural and functional sperm changes during capacitation currently remain poorly defined. Here, we performed a multibiomarker approach based on the utilization of sperm concentration, motility, viability, morphology, acrosome reaction, tyrosine phosphorylation, DNA fragmentation, and lectin-binding sites to analyze the impact caused by swim-up selection times (uncapacitated, 1 h capacitated, and 4 h capacitated) on sperm function and structure in normozoospermic samples. We found that a 4 h swim-up capacitation increased sperm quality, because a large number of cells with normal morphology and lower DNA fragmentation rates were recovered. Furthermore, the long-term capacitation induced a higher percentage of cells with tyrosine phosphorylation of the principal piece as well as a redistribution of lectin-binding sites. Overall, the multivariate biomarkers analyzed showed a less variable distribution on spermatozoa recovered after 4 h capacitation than that with the shorter capacitation time. These findings stress the importance of capacitation time as a relevant factor in sperm quality with potential biological reproductive implications both for basic research and in assisted reproduction techniques. |
| Databáze: | Directory of Open Access Journals |
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