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Salvianolic acid B protects against acute ethanol-induced liver injury through SIRT1-mediated deacetylation of p53 in rats.
This study aimed to investigate the effect of SalB on acute ethanol-induced hepatic injury in rats and to explore the role of SIRT1 in this process. The results showed that pretreatment with SalB significantly reduced ethanol-induced elevation in aminotransferase activities, decreased hepatotoxic cytokine levels such as Interleukin-6 (IL-6), and increased the antioxidant enzyme activity. Moreover, SalB pretreatment reversed the increase in NF-κB, cleaved caspase-3 and decrease in B-cell lymphoma-extra large (Bcl-xL) caused by ethanol exposure. Importantly, SalB pretreatment significantly increased the expression of SIRT1,...
Source: Toxicology Letters - April 21, 2014 Category: Toxicology Authors: Li M, Lu Y, Hu Y, Zhai X, Xu W, Jing H, Tian X, Lin Y, Gao D, Yao J Tags: Toxicol Lett Source Type: research

Role of PUMA in methamphetamine-induced neuronal apoptosis.
This study aimed to examine the effects of PUMA in METH-induced neuronal apoptosis. We determined PUMA protein expression in PC12 cells and SH-SY5Y cells after METH exposure using western blot. We also observed the effect of METH on neuronal apoptosis after silencing PUMA expression with siRNA using TUNEL staining and flow cytometry. Additionally, to investigate possible mechanisms of METH-induced PUMA-mediated neuronal apoptosis, we measured the protein expression of apoptotic markers, including cleaved caspase-3, cleaved PARP, Bax, B-cell leukemia/lymphoma-2 (Bcl-2) and cytochrome c (cyto c), after METH treatment with or...
Source: Toxicology Letters - October 30, 2015 Category: Toxicology Authors: Chen C, Qincao L, Xu J, Du S, Huang E, Liu C, Lin Z, Xie WB, Wang H Tags: Toxicol Lett Source Type: research