Abstract
Addition of CdCl2, HgCl2 or K2Cr2O7to isolated hepatocytes caused a rapid increase in reactive oxygen species (“ROS”) formation and a decline in mitochondrial membrane potential. Later lipid peroxidation and cell lysis ensued. Cytotoxicity was prevented by “ROS” scavengers and various inhibitors of the mitochondrial permeability transition (MPT) eg. cyclosporin A, carnitine or trifluoperazine. Antioxidants prevented hepatocyte lysis induced by CdCl2,K2Cr2O7but not HgC12. Hepatocyte lysis was also prevented by various apoptosis inhibitors eg. cycloheximide, dactinomycin and a tetrapeptide caspase 3 inhibitor which suggests that metal induced hepatocyte lysis involves apoptotic death signals initiated by MPT and “ROS”.
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Pourahmad, J., Mihajlovic, A., O’Brien, P.J. (2001). Hepatocyte Lysis Induced by Environmental Metal Toxins May Involve Apoptotic Death Signals Initiated by Mitochondrial Injury. In: Dansette, P.M., et al. Biological Reactive Intermediates VI. Advances in Experimental Medicine and Biology, vol 500. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-0667-6_38
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DOI: https://doi.org/10.1007/978-1-4615-0667-6_38
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