Effects of PA on HUVECs secretion of MMP-2.

<p>(A) Quantitative measurement of secreted MMP-2 by ELISA assay. Data are expressed as means ± SEM of two independent experiments. Statistical significance is expressed as <i>P</i><0.01; *, <i>P</i><0.05 versus untreated control (B) Qualitative analysis of expression of pro, intermediated and active MMP-2 using Gelatin zymography. Gel images were acquired on a Bio Rad Chemi XR Gel doc System.