Abstract
Cerium has been demonstrated to damage liver of mice, but very little is known about the molecular mechanisms underlying the mouse liver apoptosis. In order to understand the liver injury induced by intragastric administration of cerium chloride (CeCl3) for 60 consecutive days, the hepatocyte ultrasrtucture, various oxidative stress parameters, and the stress-related gene expression levels were investigated for the mouse liver. The results demonstrated that CeCl3 had an obvious accumulation in the mouse liver, leading to a classical laddering cleavage of DNA and hepatocyte apoptosis. CeCl3 significantly promoted the accumulation of reactive oxygen species and inhibited the stress-related gene expression of superoxide dismutase, catalase, glutathione peroxidase, metallothionein, heat-shock protein 70, glutathione-S-transferase, P53, and transferring, and it effectively activated the cytochrome p450 1A. It implied that CeCl3 resulted in apoptosis and alteration of expression levels of the genes related with metal detoxification/metabolism regulation and radical scavenging action in mice.
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This work was supported by the National Natural Science Foundation of China (grant No. 30901218), the “Chun-Tsung scholar” Foundation of Soochow University, and the New Ideas Foundation of Student of Soochow University (grant No. 5731511410).
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Zhao, H., Cheng, J., Cai, J. et al. Liver Injury and Its Molecular Mechanisms in Mice Caused by Exposure to Cerium Chloride. Arch Environ Contam Toxicol 62, 154–164 (2012). https://doi.org/10.1007/s00244-011-9672-0
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DOI: https://doi.org/10.1007/s00244-011-9672-0