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Efecto del Ácido Valproico, Tricostatin a y Resveratrol Sobre la Diferenciación del Adipocito

Authors: Brochero, Johana; Celis, Luis Gustavo; Lizcano, Fernando; Romero, Carolina; Vargas, Diana;

Efecto del Ácido Valproico, Tricostatin a y Resveratrol Sobre la Diferenciación del Adipocito

Abstract

La obesidad es un factor de riesgo de enfermedades coronarias, de cáncer, de accidentes cerebrovasculares y de diabetes tipo II. El propósito de este trabajo es evaluar la capacidad del ácido valproico, tricostatin A y resveratrol como agentes que reduzcan la diferenciación de preadipocitos. Los dos primeros, inhiben la actividad de las histonas deacetilasas tipo I y II, mientras que el resveratrol es un activador de la enzima sirtuina 1 perteneciente a la familia de las histonas deacetilasas dependientes de dinucleótidos de nicotinamida adenina. Esta reprime la actividad trascripcional mediada por el receptor de proliferación del peroxisoma mediante su asociación con represores, evidenciado en la movilización de ácidos grasos en células adiposas.Para el estudio se utilizó la línea celular de preadipocitos de ratón 3T3-L1 en presencia de un cóctel de diferenciación con rosiglitazona, isobutilmetilxantina y dexametasona. Al día 8 de la diferenciación, se aplicaron las dosis de los tres agentes objeto de estudio y se llevaron a cabo observaciones cada dos días hasta el día 12. Se evaluó la acumulación de depósitos de grasa mediante tinción rojo-aceite y se cuantificaron la cantidad de triglicéridos en cada tratamiento. El ácido valproico, tricostatin A y resveratrol presentaron una disminución en la diferenciación del adipocito maduro, debido a que la cantidad de triglicéridos dentro del mismo fue menor con respecto a las células tratadas con ROSI. Sin embargo, el resveratrol presenta una mayor diferencia significativa. Nuestros resultados destacan el papel de los inhibidores de las histonas deacetilasas y la actividad de sirtuina 1 en la adipogénesis que es bloqueada por los tratamientos con los tres agentes, siendo el resveratrol el agente que presenta mayor reducción de la diferenciación del adipocito.

Country
Colombia
Keywords

Medicine (General), QH301-705.5, adipogenesis; resveratrol; rosiglitazone; trichostatin A; valproic acid., resveratrol, adipogénesis, trichostatin A, Sirtuina 1, adipogenesis, rosiglitazone, R5-920, valproic acid, valproic acid., Biology (General), ácido valproico; adipogénesis; resveratrol; sirtuina 1; rosiglitazona., Células adiposas, Ciencias Médicas y de la Salud,Medicina Clínica,Otros Temas de Medicina Clínica, Ácido valproico, Adipogénesis, rosiglitazona, ácido valproico, Rosiglitazona, Resveratrol, rosiglitazona., sirtuina 1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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