Sirtuin1 attenuates acute liver failure by reducing reactive oxygen species via hypoxia inducible factor 1α

Figure 4 The inhibition of Sirtuin1/peroxisome proliferator-activated receptor alpha signaling pathway increased hypoxia-induced reactive oxygen species production. A: Western blotting was performed to measure the levels of peroxisome proliferator-activated receptor alpha (PPARα) in L02 cells; B: The levels of Sirtuin1 (Sirt1) and hypoxia inducible factor (HIF)-1α in L02 cells; C: Reactive oxygen species productions were detected by dihydroethidium (DHE) staining and evaluated by quantification of mean fluorescence intensity in DHE staining. Data shown are means ± standard deviations (SDs) of three separate experiments. ^aP < 0.05 vs Control group; ^bP < 0.05 vs Lipopolysaccharide (LPS)-treated group; ^cP < 0.05 vs LPS + Hypoxia-treated group; one-way analysis of variance with Bonferroni's post hoc test; the error bars indicate the SDs.