Abstract
The present study shows the basis for the anti-inflammatory effects of statins in interleukin 1β (IL-1β) induced SW1353 chondrosarcoma cell-line. The cells were pre-treated with simvastatin (5 μM, 10 μM, and 50 μM), followed by IL-1β (5 ng/mL) stimulation. Effects of simvastatin on cell viability and cytotoxicity of chondrocytes were measured with WST-1 and lactate dehydrogenase (LDH) assays, respectively. Under inflammatory conditions, in the absence/presence of simvastatin, the changes in matrix metalloproteinases (MMPs) and tissue inhibitor of metalloproteinase-1 (TIMP-1) expression levels were examined. Expression levels of MMP-1, -2, -3, -9, -13, and TIMP-1 and -2 were examined by qPCR. MMP-1, -9, -13, TIMP-1, and -2 levels were also determined by Western blotting. Gelatin zymography was performed to analyze the released and intracellular MMP-2 and MMP-9 activity levels. The results showed that simvastatin downregulated the degradation related genes MMP-3, MMP-13, MMP-2, MMP-9 and TIMP-2 in a dose-dependent manner.
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