Abstract
Matrix metalloproteinases play a major role in the process of angiogenesis, an important feature of diabetes complications, cancer or rheumatoid arthritis. High glucose concentrations were reported to augment metalloproteinase-2 secretion in some cell types. In the present study we investigated the influence of acetylsalicylic acid on metalloproteinase- 2 secretion and expression in endothelial cells cultured for one week in high glucose conditions (25 mM and 33 mM). Metalloproteinase-2 activity was evidenced by gel zymography, the protein was identified by Western blotting, and the gene expression was quantitated by RT-PCR. The results indicated a marked inhibitory effect of acetylsalicylic acid at gene expression level (approximately 43%) and also at secretion level in samples of conditioned media (approximately 30%) and cellular homogenates (approximately 70%). This may suggest that acetylsalicylic acid could have a beneficial effect in preventing the angiogenic process that appears in diabetes complications.
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