CARACTERIZACIÓN DEL EFECTO ANTIOXIDANTE DEL ERITRODIOL EN HT29 E IEC18
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2017-09-20
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Jaén: Universidad de Jaén
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[ES] El cáncer de colon es un tipo de cáncer muy frecuente y con una gran mortalidad. En la actualidad, los tratamientos para este tipo de cáncer son escasos y hay que buscar alternativas para su tratamiento o prevención. El uso de compuestos naturales derivados de plantas medicinales puede ser una alternativa. El eritrodiol, un triterpeno pentacíclico presente en el aceite de oliva, puede ser uno de ellos. El objetivo de este estudio ha sido evaluar el efecto antioxidante del eritrodiol a una concentración IC50 en la línea celular HT29 derivada de adenocarcinoma de colon. Se ha utilizado como referencia la línea celular IEC18 no tumoral. Se ha determinado el efecto de este compuesto sobre la producción de especies reactivas de oxígeno (ROS), sobre la actividad de las enzimas antioxidantes superóxido dismutasa (SOD), catalasa (CAT), glutatión peroxidasa (GPx), glutatión reductasa (GR), glucosa-6-fosfato deshidrogenasa (G6PDH), 6-fosfogluconato deshidrogenasa (6GPDH) y glutatión-S-transferasa (GST), además de cuantificar la concentración de metabolitos los GSH, GSSG, NADPH, NADP+. A la vista de los resultados, se puede decir que en HT29 no varió la producción de ROS, mientras que en IEC18 si hubo diferencias significativas. Respecto a las enzimas antioxidantes, en HT29 hubo un aumento de la actividad de CAT, GR, GST, G6PDH y 6GPDH mientras que SOD y GPx no experimentaron cambios mientras que en IEC18 sólo aumentaron SOD y GR. La concentración de metabolitos se mantenía con el tratamiento en ambas líneas celulares, al igual que el nivel de estrés oxidativo. Se puede decir que el eritrodiol estimula los sistemas antioxidantes enzimáticos en HT29, mantiene la concentración de NADPH y GSH y como consecuencia el exceso de radicales libres son captados por estos sistemas.
[EN] The colon cancer is a type of very frequent cancer in the world and with a big mortality very frequent in Spain. At present, the treatments for this type of cancer are scarce and it is necessary to look for alternatives for its treatment or prevention. The use of medicinal plants can be an alternative, and erythrodiol, a pentacyclic tripterpene present in olive oil with anticarcinogenic properties, receive importance. The aim of the study was to evaluate the effect of erythrodiol in HT29 and IEC18, seeing the effect on the production of ROS, on the activity the enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glucose-6-phosphate dehydrogenase (G6PDH), 6-fosfogluconate dehydrogenase (6GPDH) and glutathione S-transferase (GST), in addition to quantifying the concentration of metabolites GSH, GSSG, NADPH, NADP+. The results showed that in HT29 did not change the ROS production, while in IEC18 there were significant differences. With regard to the antioxidant enzymes, an increase of the activity of CAT, GR, GST, G6PDH and 6GPDH was produced in HT29 while SOD and GPx did not change. In IEC18 only SOD and GR increased. GSH and NADPH concentration did not changed in response to the treatment in both cellular lines, as the stress oxidative level. Erythrodiol stimulates the enzyme antioxidant systems in HT29 to maintain the concentration of NADPH and GSH and the ROS.
[EN] The colon cancer is a type of very frequent cancer in the world and with a big mortality very frequent in Spain. At present, the treatments for this type of cancer are scarce and it is necessary to look for alternatives for its treatment or prevention. The use of medicinal plants can be an alternative, and erythrodiol, a pentacyclic tripterpene present in olive oil with anticarcinogenic properties, receive importance. The aim of the study was to evaluate the effect of erythrodiol in HT29 and IEC18, seeing the effect on the production of ROS, on the activity the enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glucose-6-phosphate dehydrogenase (G6PDH), 6-fosfogluconate dehydrogenase (6GPDH) and glutathione S-transferase (GST), in addition to quantifying the concentration of metabolites GSH, GSSG, NADPH, NADP+. The results showed that in HT29 did not change the ROS production, while in IEC18 there were significant differences. With regard to the antioxidant enzymes, an increase of the activity of CAT, GR, GST, G6PDH and 6GPDH was produced in HT29 while SOD and GPx did not change. In IEC18 only SOD and GR increased. GSH and NADPH concentration did not changed in response to the treatment in both cellular lines, as the stress oxidative level. Erythrodiol stimulates the enzyme antioxidant systems in HT29 to maintain the concentration of NADPH and GSH and the ROS.
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