Aloe vera: capacidad antioxidante y uso potencial como agente terapéutico en el tratamiento del Alzheimer mediante evaluación in silico
DOI:
https://doi.org/10.29059/cienciauat.v18i2.1803Palabras clave:
Aloe vera, antioxidante, Alzheimer, bioinformática, aloe-emodinaResumen
El gel de Aloe vera es considerado una fuente natural de múltiples beneficios, originados por la acción combinada de vitaminas, aminoácidos, compuestos fenólicos, enzimas, minerales, ácidos orgánicos, lípidos y carbohidratos, que se relacionan con la mejora de enfermedades neuro-degenerativas como Alzheimer. Los ensayos in vitro e in silico permiten confirmar e identificar posibles beneficios de esta planta y sus compuestos en enfermedades. El objetivo del presente trabajo fue evaluar la actividad antioxidante del gel de A. vera y mediante análisis in silico, establecer el potencial terapéutico de sus compuestos bioactivos en la enfermedad de Alzheimer. Se obtuvieron hojas de A. vera, de las que se extrajo el gel, retirando el exocarpio, se liofilizó y almacenó hasta su uso. Se caracterizó la capacidad antioxidante, se cuantificaron los compuestos fenólicos y flavonoides y se analizó la relación que existe entre los parámetros mediante correlación de Pearson. Mediante análisis in silico se evaluó el potencial de interacción de 8 compuestos del gel con la proteína gamma secretasa. El gel de A. vera obtuvo alta capacidad antioxidante por ABTS, DPPH, radical OH y poder reductor, usando bajas concentraciones para inhibir el 50 % de los radicales, y correlaciones positivas con fenoles totales y flavonoides. En el estudio in silico el compuesto que presentó mejor unión con gamma secretasa fue aloe-emodina, con menor energía libre de unión y menor concentración de constante de inhibición, sugiriendo su potencial uso como coadyuvante en el tratamiento de la enfermedad de Alzheimer.
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