Figure 6

AKBA protects primary cultured neurons against OGD-induced cell death AKBA affords cell protection through the Nrf2/HO-1 pathway.
Cells were pretreated with AKBA for 2 h before being subjected to 60 min OGD then incubated with AKBA for an additional 24 h. All data represent the mean ± SD of triplicate independent experiments. (A) Cell viability assay using MTT and HO-1 expression; (B) Intracellular ROS level. *, P < 0.05 vs. control. (C) Cells were treated for 48 h with control or HO-1 siRNA (transfection efficiency was checked by Western analysis), then subjected to 50 μM AKBA for 2 h before being subjected to 60 min OGD followed at 24 h by the MTT assay; (D) Intracellular ROS level. (E) Cells were treated for 48 h with control or Nrf2 siRNA, then subjected to 50 μM AKBA for 2 h before being subjected to 60 min OGD followed at 24 h by the MTT assay; (F) Intracellular ROS level. a, P < 0.05 vs. control; b, P < 0.05 vs. OGD and c, P < 0.05 vs. AKBA-treated OGD group.