alexa Effect of prooxidants on mitochondrial permeability transition and cell death in Ehrlich ascites tumour cells.
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): Teplova VV, Kudrjavtsev AA, Odinokova IV, Evtodienko YV, Saris NE

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Abstract Ca2+ retention in mitochondria, opening of the Cysclosporin A- sensitive permeability transition pore and cell death were studied in Ehrlich ascites tumour cells in the presence of different prooxidants. Low concentrations (1-20 microM) of the prooxidants (menadione, cumenehydroperoxide, t-butylhydroperoxide) induced pore-opening in permeabilized cells at threshold Ca2+ load. Incubation of cells with low concentrations of prooxidants was able to induce cell cycle disturbance and cell death. Under the prooxidant effect, mitochondrial membrane potential drop and Ca2+ retention decrease in mitochondria were found to precede death of Ehrlich ascites tumour cells.
This article was published in Biochem Mol Biol Int and referenced in Biochemistry & Analytical Biochemistry

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