Alteración de la memoria de reconocimiento de objetos tras la exposición crónica al ácido diclorofenoxiacético (2,4-D) en ratas adultas

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i1.11695

Palabras clave:

Agroquímicos; Herbicidas; Trastornos de la memoria; Pruebas neuropsicológicas; Cebado de repetición.

Resumen

Los síntomas neurológicos descritos asociados con la exposición a pesticidas incluyen problemas de memoria y concentración. La mayoría de los estudios experimentales de la asociación entre ácido diclorofenoxiacético (2,4-D) y neurotoxicidad se han centrado en el desarrollo del cerebro y pocos se han realizado en animales adultos. El objetivo de este estudio fue evaluar si la exposición crónica por vía oral o por inhalación al 2,4-D afecta la memoria de reconocimiento de objetos en ratas adultas. Se utilizaron cuarenta ratas albinas Wistar y se distribuyeron en 4 grupos (n = 10): I: animales nebulizados con agua destilada; O: animales que reciben alimento tratado con agua destilada nebulizada; DI: animales nebulizados con 9,28 x 10-3 gramos de ingrediente activo por hectárea (g.i.a./ha) de 2,4-D; y DO: animales que reciben alimento tratado con 9.28 x 10-3 g.i.a./ha de 2,4-D nebulizado. Los animales estuvieron expuestos durante 6 meses. Para evaluar la memoria de reconocimiento se utilizó la prueba de reconocimiento de objetos. En comparación con los animales de control, los animales expuestos a 2,4-D pasaron menos tiempo explorando objetos (p <0,05) y obtuvieron una puntuación de índice de reconocimiento de objetos de -1. La ruta de exposición al 2,4-D tuvo efecto solo en el tiempo dedicado a explorar objetos, que fue más corto en los animales expuestos por vía oral. La exposición crónica a una alta concentración de 2,4-D altera la capacidad de los animales adultos para reconocer objetos.

Citas

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Publicado

09/01/2021

Cómo citar

UEDA, R. M. R. .; SOUZA, V. M. de; MAGALHÃES, L. R. .; GIUFFRIDA, R. .; NAI, G. A. . Alteración de la memoria de reconocimiento de objetos tras la exposición crónica al ácido diclorofenoxiacético (2,4-D) en ratas adultas. Research, Society and Development, [S. l.], v. 10, n. 1, p. e23310111695, 2021. DOI: 10.33448/rsd-v10i1.11695. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/11695. Acesso em: 27 sep. 2024.

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Ciencias de la salud