Fig 7. Correlation between serum MMP-2 and different tissue MMP-2 isoforms Pearson`s correlation analyses between serum MMP-2 and different tissue MMP-2 isoforms were performed to test for any a measurable linear connection between tissue and serum MMP-2.
rP = Pearson correlation coefficient; AU: arbitrary units. A. Pearson correlation analysis revealed no significant linear relationship between serum MMP-2 and total tissue MMP-2 (rP = - 0.15; P = 0.5). Correlation coefficient is greater than for tissue pro-MMP-2 and tissue active MMP-2 but without a statistical significance. B. Pearson correlation demonstrated no significant linear relationship between serum MMP-2 and tissue pro-MMP-2 (rP = - 0.04; P = 0.9). Correlation coefficient is close to zero. C. Pearson correlation analysis showed no significant linear relationship between serum MMP-2 and tissue active MMP-2 (rP = - 0.06; P = 0.8). Correlation coefficient is almost zero.