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Cerium oxide nanoparticles protects against acrylamide induced toxicity in HepG2 cells through modulation of oxidative stress.
Drug and Chemical Toxicology 2018 June 7
Acrylamide (AA) is a toxic chemical compound found in cooked foods. Considerable evidences suggest that oxidative stress and mitochondrial dysfunction are contributed to AA toxicity. Ceric oxide (CeO2 ) nanoparticles (nano-ceria) have the potential to be developed as a therapeutic for oxidative stress insults due to their catalytic antioxidant properties. In this study we investigated, whether nano-ceria exerted a protective effect against AA-induced cytotoxicity and oxidative damage. HepG2 human cancer cell lines were exposed to nano-ceria (50, 100, and 200 µM) and after 30 min, AA in the half maximal inhibitory concentration (IC50) concentration (200 µM) was added to the cells. Twenty four hours later, cellular viability, reactive oxygen species (ROS) generation, lipid peroxidation (LPO), and cellular levels of glutathione (GSH) were assayed. AA decreased cell viability and pretreatment with nano-ceria significantly decreased AA-induced cytotoxicity. In addition, nano-ceria alleviated AA-induced ROS generation and LPO and depressed GSH level. Our results suggested that nano-ceria prevented cellular and oxidative damage induced by AA.
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