Effect of thymoquinoneon COX-2 and PPAR-γ protein expressionin SCI rats. (A) COX-2 and (B) PPAR-γ protein expression were analyzed by (C) western blotting in SCI rats. ##P<0.01 vs. Sham; **P<0.01 vs. Model. SCI, spinal cord injury; Sham, sham surgery group; Model, SCI surgery group; Thymoquinone, SCI + thymoquinone group; COX, cyclooxygenase; PPAR, peroxisome proliferator-activated receptor.