Figure 2

MMP activities in cardiac biopsy samples. The enzymatic activities of pro-MMP-2, MMP-2, pro-MMP-9 and MMP-9 were evaluated in tissue samples taken before CPB (A, C, E, G) and after CPB (B, D, F, H) using gelatin zymography. One representative gel containing 6 control and 6 RIPC samples is shown in I (before CPB) and J (after CPB). Bars denote SEM; *, P < 0.05; **, P < 0.01. CPB, cardiopulmonary bypass; RIPC, remote ischemic preconditioning.