Figure 4. The effect of of PDTC on cytokines expression. (A–E) NF-κB specific inhibitor PDTC can decrease the proteins expression of NF-κB, TNF-α, MCP-1 and IL-6 in MPP+-treated PC12 cells. (***P < 0.001, compared with control group; $$$P < 0.001.compared with MMP+ group; n=3, mean +/- SEM).