Perchlorate-induced oxidative stress in isolated liver mitochondria

As a new threat to environment all through the world, perchlorate (ClO4-) was predominantly a thyrotoxin, and its toxic manifestations in non-thyroid were also documented. To date, little is known about the effect of ClO4- on cell and organelle. To reveal the toxicity of ClO4- on living organism in-depth, mitochondria isolated from liver of Carassius auratus were incubated with different concentrations of ClO4-. The results demonstrated that ClO4--induced mitochondrial oxidative stress, and subsequently caused a gradual opening of permeability transition pore leading to mitochondrial swelling and lipid peroxidative membrane damage. ClO4- has a conspicuous inhibition of electron transport chain activity which largely correlated to complexes I and IV. The investigations clearly demonstrated the oxidative stress of ClO4- in mitochondria, may well reveal cytotoxic effects in vitro that merit further investigation.