Figure 4

Gelatin zymography for the effect of glucose on tendon cells. (A) Gelatin zymography showed that MMP-2 and MMP-9 had enzymatic activities at a molecular size of 72 kDa and 95 kDa, respectively. (B) Densitometric analysis of the MMP-2 and MMP-9 zymogram revealed that the enzymatic activity of MMP-9 in tendon cells increased after glucose treatment (*p < 0.05, n = 3).