Figure 6: Effects of Hcy treatment for different time on the activity of MMP-2. VECs were treated with 100 μmol/L Hcy for 24 hr, 48 hr, 72 hr. The MMP-2 activity was determined by gelatin zymography assay. ±s, n=5, *P<0.01 vs. control (0 h); and P<0.01 vs. 24 h.