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Toxicidad de xenobióticos mediada por radicales libres de oxígeno

Authors: Martínez Cayuela, Marina;

Toxicidad de xenobióticos mediada por radicales libres de oxígeno

Abstract

La toxicidad de muchos xenobióticos está mediada por la formación de radicales libres de oxígeno. Estos xenobióticos son reducidos por un electrón produciendo especies químicas que reaccionan con el oxígeno molecular (O2) para dar lugar a radicales anión superóxido (O2.-) y regenerar la molécula original. De este modo se crea un ciclo redox que implica un gran consumo de O2 y de equivalentes redox, principalmente en forma de NADPH. Los radicales libres producidos durante este ciclo redox, así como las especies reactivas derivadas de él, serían los responsables del daño celular causado por dichos xenobióticos

Toxicity of many xenobiotics is mediated by oxygen free radical production. These xenobiotics are reduced in oneelectron reactions to give rise to chemical especies which react with molecular oxygen (O2) producing superoxide anion radicals (O2.-) and regenerating the original molecule. In this way, a redox cycling is formed involving disproportionate consumption of O2 and redox equivalents, mainly NADPH. Radicals produced during this redox cycling, and their derivative structures, would be responsible for the cellular damage caused by such xenobiotics.

Country
Spain
Related Organizations
Keywords

Xenobiotic toxicity, Oxygen free radicals, Redox cycling, Toxicidad de xenobióticos, Ciclo redox, Radicales libres de oxígeno

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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
Green
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