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Acción anti-apoptótica de un calostro bovino en un modelo celular de osteoporosis

Authors: Martín-Aragón S; Bermejo-Bescós P; Raposo C; F, Marques; Gkiata P; Koutedakis Y; Ntina G; +2 Authors

Acción anti-apoptótica de un calostro bovino en un modelo celular de osteoporosis

Abstract

La osteoporosis inducida por glucocorticoides es una de las formas secundarias más comunes de osteoporosis, debida en parte a la apoptosis de osteoblastos y osteocitos. En el presente trabajo, se han investigado los efectos de un calostro bovino en un modelo celular de osteoporosis obtenido a partir de la exposición de células osteoblásticas MC3T3-E1 a la DEX, en un rango de concentración (0-700 μM). El co-tratamiento de las células con el calostro bovino se realizó a una concentración de 0,1-5,0 mg/mL. Se determinó la activación de la caspasa-3 para evaluar el grado de apoptosis de los osteoblastos bajo la exposición a DEX y su posible prevención mediante el co-tratamiento con calostro. Se midieron los niveles de glutation reducido (GSH) para determinar si la apoptosis mediada por el estrés oxidativo de la DEX se veía disminuida por el co-tratamiento con calostro. Finalmente, mediante Western blot, se determinaron los niveles de las proteínas p-ERK1/2, Bcl-XL, Bax y Hsp70 tras la exposición a DEX o DEX más calostro. El calostro evitó la disminución de la viabilidad celular y el aumento de la activación de la caspasa-3 y el estrés oxidativo, causados por la exposición a la DEX. Las células sometidas a un tratamiento conjunto de calostro y DEX mostraron mayores niveles de p-ERK1/2 y menores niveles de Bcl-XL, Bax y Hsp70. Estos resultados prueban que el calostro posee capacidad de reducir la apoptosis inducida por DEX posiblemente a través de la activación de la vía ERK y la modulación del sistema Hsp70.

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selected citations
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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).
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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!
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