Figure 8

NAD levels of N9 cells affected by SWNHs, especially in pre-treated with LPS. NAD levels were measured in N9 cells pre-treated with or without LPS induced by SWNHs. NAD level of N9 cells pre-treated with LPS (B) were more significant than in N9 cells (A). Followed with the increasing concentrations of SWNHs, NAD level of N9 cells decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (B) (P < 0.01). All data are represented as mean ± SEM.