Figure 4: Resveratrol attenuates HG-induced apoptosis.

(a) Cells were incubated in medium containing NG (5.6 mM), HG (30 mM), and HG in the presence of resveratrol (15 μM) for 48 h. The effects of resveratrol on HG-induced apoptosis were determined by flow cytometry. (b) Quantitative analysis of Annexin V+ PI− and Annexin V+ PI+ podocytes. Data are the mean ± SEM of three experiments. *P < 0.05 vs. NG, #P < 0.05 vs. HG. (c) Representative images of immunofluorescence staining indicating the activation and cleavage of caspase-3. Cleaved caspase-3 exhibits red fluorescence and nuclei are stained with 4′,6-diamidino-2-phenylindole (DAPI; blue). Podocytes were treated with NG, HG, or HG plus resveratrol for 48 h. Magnification: 200×.