Abstract
To study the oxidative damage and apoptosis of renal tubular epithelial cells (NRK-52e cell line) induced by ethylbenzene. NRK-52e cells were exposed to 30, 60, 90, 120 μmol/L ethylbenzene for 24 hours. Cell viability were measured using MTT, the activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT), the contents of malondialdehyde (MDA) and glutathione (GSH) were detected respectively. PI fluorescent staining assay was applied to detect percentage of apoptosis in ethylbenzene-treated groups. Compared with control group, cell outline became clear, cell diopter increased, cell became smaller and shrinkage, some cells broke in 60 μmol/L ethylbenzene-treated group. Plenty of cells died, suspension cells increased significantly in 90 μmol/L ethylbenzene-treated group. Compared with control group, cell viability the activities of SOD and CAT and the content of GSH were significantly decreased in 60 and 90 μmol/L ethylbenzene-treated groups (P<0.05). The MDA content were remarkably elevated in 90 μmol/L ethylbenzene-treated groups (P<0.05). Ethylbenzene can induce oxidative stress and apoptosis in NRK-52e cells (P<0.05).
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