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Figure 3 (Top) Plasma matrix metalloproteinase (MMP)-8 levels increased in a time-dependent manner up to 24 h following alcohol injection of the septal perforator artery in patients with hypertrophic obstructive cardiomyopathy and plateaued for longer periods following alcohol injection. (Bottom) A fall in plasma MMP-13 levels was detected early following alcohol injection and was significant at 24 h. *p < 0.05 vs. time 0; baseline values.