Abstract
Superficial venous thrombosis (SVT) is the complications of varicose great saphenous veins (VGSVs), but its pathogenesis remains unclear. This study was designed to measure the changes in expression of matrix metalloproteinases (MMPs) and the tissue inhibitor of metalloproteinases (TIMPs) from SVT, VGSVs, and great saphenous veins (GSVs). In the venous walls of the three groups, the expression of MMP-2, MMP-9, TIMP-1, and TIMP-2 proteins, protein-positive expression ratios, mRNA expression, and protein expression were determined by immunohistochemistry, polymerase chain reaction, and western blot. The MMP-2, MMP-9, TIMP-1, and TIMP-2 protein-positive expression ratios, mRNA and protein expression in the SVT group were significantly higher than those in the VGSV and the GSV groups. The corresponding expression in the VGSV group were significantly higher than those in the GSV group. Disequilibrium of MMPs and TIMPs in SVT wall occurs due to underlying high hydrostatic pressure and inflammation. These results suggested that MMPs and TIMPs participate in the process of venous wall remodeling.
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