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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2015, Vol. 20 ›› Issue (4): 388-393.

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Inhibitory effect of aspirin on the expression of MMP-9 and its mechanism in LPS-induced RAW264.7 cells

ZHANG Ping1, SHEN Chen-lin1, LI Lin1, ZHANG Wei1, YAO Cheng-zeng2, HUANG Xiao-hui1   

  1. 1 Department of Basic and Clinical Pharmacology, School of Pharmacy, Anhui Medical University, Hefei 230032, Anhui,China;
    2 Department of Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Received:2014-10-10 Revised:2015-03-22 Published:2015-05-07

Abstract: AIM: To investigate the effect of aspirin on the expression of MMP-9 and its mechanism in LPS-induced RAW264.7 cells.METHODS: The cytotoxic effect of aspirin on LPS-induced RAW264.7 cells was detected by MTT assay. MMP-9mRNA expression was detected by quantitative real-time PCR. The protein expression level of MMP-9, p38MAPK and Phospho-p38 (P-p38) were examined by western blotting. After the inhibition of p38MAPK pathway by specific inhibitor SB203580, the gene and protein expression of MMP-9 was measured by Quantitative real-time PCR and western blotting separately.RESULTS: The gene and protein expression of MMP-9 were inhibited by aspirin in dose-dependent manner.The protein expression of P-p38 was significantly inhibited by aspirin as compared with LPS treatment group. However, the protein expression of p38MAPK was not significantly different. The expression of MMP-9mRNA and protein were obviously decreased after inhibiting p38MAPK pathway.CONCLUSION: The results suggest that aspirin has potent anti-atherosclerotic action with inhibitory action on MMP-9 production by blocking p38MAPK pathway in LPS-induced RAW264.7 cells.

Key words: aspirin, matrix metalloproteinase, atherosclerosis, macrophage

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