Figure 1

The expression of inflammatory factors in the serum and SF of RA patients. The levels of IFN-γ (A) and IL-17 (B) in the RA SF were compared with that in RA serum and OA SF. The levels of MMP-3 (C) and TIMP-1 (D) in the serum and SF of RA patients were assessed. The levels of RANKL in RA serum (E) and SF (F) were compared with those in OA serum and SF. *: P <0.05, **: P <0.01.