Figure 4

Effect of EA on COX-2 expression in the ipsilateral spinal dorsal horn at 6 h after CFA injection. (A). The expression of COX-2 mRNA (relative to GAPDH) in L4-6 ipsilateral spinal dorsal horn was measured by real-time PCR. **P < 0.01 versus control group. ^▲ P < 0.05 versus model group. # P < 0.05 versus sham EA group. Results are mean ± SEM; n = 6. (B). The expression of COX-2 protein measured by western blotting analysis. **P < 0.01 versus control group. ^▲ P < 0.05 versus model group. # P < 0.05 versus sham EA group. Results are mean ± SEM; n = 6. (C). COX-2 protein in normalized against β-actin.