Figure 5.

Effect of magnolol on MMP-1, -9, and TIMP-1 expression and NF-κB activation. (a) The protein expression of MMP-1, -9, and TIMP-1 was determined by Western blot in dissected tissues encircled upper second molar, and the relative MMPs/TIMP ratio was measured. (b) The Western blot analysis was conducted to detect phospho-NF-κB p65 protein level in dissected tissues. Data are expressed as the mean ± SD (n = 4). **P < 0.01, ***P < 0.001 versus control; ^# P < 0.05, ^## P < 0.01 versus ligation group.