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- W2794692906 abstract "The present study was aimed at assessing the impact of AgNPs on the liver of male rats orally exposed to 0, 50, 100 and 200 mg/kg/day of polyvinyl pyrrolidone coated AgNPs (PVP-AgNPs) for 90 days. The induction of apoptotic cell death -by measuring the protein levels of the active form of caspase 3- and the levels of the microtubule-associated protein 1A/1B-light chain (LC3) protein were measured as a marker of the induction of autophagy. PVP-AgNPs caused an increase of the activity of superoxide dismutase (SOD) and catalase (CAT) in the liver of male rats. However, the activity decreased after exposure to high amounts of PVP-AgNPs. Increased protein levels of IRS-1, AKT, GSK3β and mTOR proteins were observed in a dose-dependent manner. However, these proteins showed a decrease at 200 mg/kg/day. The same pattern was observed for the p53, p21 and cleaved caspase 3 protein levels. The current results suggest that the increase of ROS production by PVP-AgNPs stimulated SOD and CAT activity, as well as IRS-1, AKT, mTOR, p53, p21 and caspase 3 as protective mechanisms of cell survival and preserve DNA fidelity. However, cellular damage by excessive ROS production might induce the depletion of these survival mechanisms at 200 mg/kg/day." @default.
- W2794692906 created "2018-04-06" @default.
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- W2794692906 date "2018-05-01" @default.
- W2794692906 modified "2023-10-18" @default.
- W2794692906 title "Oral exposure to silver nanoparticles increases oxidative stress markers in the liver of male rats and deregulates the insulin signalling pathway and p53 and cleaved caspase 3 protein expression" @default.
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- W2794692906 doi "https://doi.org/10.1016/j.fct.2018.03.039" @default.
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