Effect of N-Acetylcysteine on the Matrix Metalloproteinases and Their Inhibitors in Carbon Tetrachloride-Induced Hepatotoxicity
2009
Matrix metalloproteinases (MMPs) are a group of zinc proteases that serve the function of breaking down extracellular matrix (ECM). The present study evaluated the role of N-acetylcysteine (NAC) on the increased deposition of ECM in hepatic and glomerular fibrosis caused by carbon tetrachloride (CCl₄). The activity of MMPs increased and the levels of tissue inhibitors of metalloproteinases 1 and 2 (TIMP-1 and TIMP-2) decreased in the liver and kidney of CCl₄-treated rats. Rats treated with CCl₄ and NAC showed increased activities of MMPs and decreased levels of TIMP-1 and TIMP-2 in the liver and kidney. Treatment with NAC resulted in the effective degradation of ECM due to an increase in the activities of MMPs and a decrease in the levels of TIMPs.
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