EVALUACIÓN DEL DAÑO DE ADN DE LINFOCITOS HUMANOS EXPUESTOS A CIPERMETRINA Y EXTRACTO ETANÓLICO DE SEMILLAS DE VITIS VINIFERA L. (VITACEAE) “UVA”
DOI:
https://doi.org/10.22497/118Abstract
Resumen
El presente trabajo tuvo como objetivo evaluar el daño al ADN de linfocitos humanos inducidos por cipermetrina y el efecto protector del extracto etanólico de semilla de Vitis vinifera L. (Vitaceae) “uva” se utilizó la electroforesis alcalina de una sola célula (ensayo cometa). Los linfocitos fueron aislados de muestras de sangre obtenidas de 6 donantes sanos, no fumadores con un rango de edad de 20 y 26 años y se cultivaron en Karyotyping Medium GIBCO™ PB-MAX™ por 24 horas. Los linfocitos fueron sometidos a un pre-tratamiento con soluciones de extracto etanólico de semilla de Vitis vinífera L. “uva” a concentraciones de 15 y 40 ppm durante 1 hora y transcurrido este tiempo fueron tratados con cipermetrina a una concentración de 20 ppm. Para el ensayo cometa se usó el método establecido por Olive et al., 1992 modificado por Castillo, 2012. Los resultados permitieron apreciar que los linfocitos expuestos al extracto etanólico de semilla de Vitis vinífera L. (Vitaceae) “uva” y Cipermetrina muestran una disminución frente al daño en el ADN inducido por Cipermetrina.
Palabras clave: Vitis vinifera, cipermetrina, ensayo cometa, daño del ADN.
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Abstract
The present study objective of evaluating the DNA damage in human lymphocytes induced by cypermethrin and the protective effect of the ethanolic extract of Vitis vinifera L. (Vitaceae) “grape” seeds. This study used the alkaline single-cell gel electrophoresis (comet assay). Lymphocytes were isolated from blood samples obtained from 6 healthy, non-smokersdonors, within an age range of 20-26 years, and afterwards cultured in GIBCO ™ PB-MAX™ Karyotyping Medium which was incubated at 37 ° C for 24 hours. Lymphocytes were pre-treatedwith an ethanolic extract of Vitis vinifera L. (Vitaceae) “grape” seed solution at concentrations of 15 and 40 ppm for 1 hour and after this time they were treated with Cypermethrin at a concentration of 20 ppm, hydrogen peroxide 50 mM was considered as positive control and Phosphate Buffer (PBS) as a negative control. The comet assay was done following the method established by Olive et al., 1992. The results showed that lymphocytes exposed to the ethanolic extract of Vitis vinifera L. (Vitaceae) “grape” seeds and cypermethrin presented a DNA damage diminution induced by Cypermethrin; thus it’s concluded that pretreatment of lymphocytes with ethanolic extract of V. vinifera L. (Vitaceae) seeds significantly reduces DNA damage caused by cypermethrin.
Keywords: Vitis vinifera, cypermethrin, comet assay, DNA damage.
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