Immunostaining analysis of NF-κB, p-ERK1/2 and p-JNK in DRG neurons. (A–C) The expressions of NF-κB, p-ERK1/2 and p-JNK were increased after PTX treatment and J12 inhibited the expressions. (D) Quantification of NF-κB immunofluorescence intensity in the DRGs. (E) Quantification of p-ERK1/2 immunofluorescence intensity in the DRGs. (F) Quantification of p-JNK immunofluorescence intensity in the DRGs. n = 5 in each group. Magnification×400. **vs Control, p < 0.01; ## vs PTX, p < 0.01. Data are expressed as mean ± SEM.