Figure 7.

FA increases the cell viability of 6-OHDA- or H₂O₂-treated PC-12 cells. (a, b) Cytotoxicity of 6-OHDA or FA in PC-12 cells after 24 h of treatment was determined by the MTT assay. The IC₅₀ values of 6-OHDA and FA were calculated by using GraphPad Prism 6.0 software. (c) PC-12 cells were treated with 6-OHDA in the presence or absence of FA at the indicated concentrations for 24 h. Then, the cell viability of PC-12 cells was determined by the MTT assay. The bar chart indicates the cell viability of PC-12 cells. (d) Cytotoxicity of H₂O₂ in PC-12 cells after 24 h of treatment was determined by the MTT assay. The IC₅₀ values of H₂O₂ were calculated by using GraphPad Prism 6.0 software. (e) PC-12 cells were treated with H₂O₂ in the presence or absence of FA at the indicated concentrations for 24 h. The bar chart indicates the cell viability of PC-12 cells. Data were collected from three independent experiments and expressed as the mean ± SD. ^∗∗p ≤ 0.01 and ^∗∗∗p ≤ 0.001.