2017, Número 2
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Rev Salud Publica Nutr 2017; 16 (2)
Incremento de la expresión de TLR4 y efecto antioxidante del ácido acetilsalicílico en conejos con dieta alta en grasas
Ortíz-Reyes AE, Calderón-Torres CM
Idioma: Español
Referencias bibliográficas: 37
Paginas: 1-10
Archivo PDF: 384.84 Kb.
RESUMEN
Introducción: La obesidad y el desarrollo de enfermedades hepáticas que se caracterizan por el aumento y acumulación de
lípidos en tejidos y sangre, inflamación y estrés oxidante, son actualmente una epidemia mundial, y en la población mexicana
es cada vez mayor el número de jóvenes afectados. Este aumento ha conducido a la investigación médica hacia la detección
temprana del síndrome metabólico, que se emplea como indicador de síntomas que pueden ser de riesgo para la salud y
conducir a enfermedades hepáticas.
Objetivo: Los objetivos del presente trabajo fueron: evaluar en un modelo de dislipidemia
en conejos jóvenes alimentados con una dieta alta en grasa (ácido palmítico al 20%), la producción de especies reactivas del
oxígeno y cambios en la expresión de genes
TLR4, COX2y de
IL-1β como marcadores de inflamación y de estrés oxidante, así
como evaluar el efecto del ácido acetilsalicílico en la producción de radicales libres y en la expresión de estos genes.
Resultados: En los conejos alimentados con exceso de grasa aumentaron los niveles de triglicéridos (p‹0.05), la expresión de
TLR4 y las especies reactivas del oxígeno, aunque éstas últimas no de forma significativa. La administración de ácido
acetilsalicílico en dosis antiinflamatorias disminuyó la producción de especies reactivas del oxígeno y la expresión de
TLR4.
Discusión: La ingesta elevada de grasa en conejos jóvenes por un período corto de tiempo conduce a la dislipidemia y a la
sobreexpresión de
TLR4, gen clave de la respuesta inflamatoria y vinculada al aumento de las especies reactivas del oxígeno.
Los resultados indican que el ácido acetilsalicílico tiene efecto antioxidante.
Palabras Clave: Obesidad|dislipidemia|inflamación|estrés oxidante|hígado graso no alcohólico (HGNA)|
ABSTRACT
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