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Inhibition of C-reactive protein induced expression of matrix metalloproteinases by atorvastatin in THP-1 cells

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Abstract

The role of CRP as a mediator in atherosclerosis and inflammation is being investigated worldwide. In the present study, the effect of CRP on matrix metalloproteinases (MMP)-1, 2, 9, and their tissue inhibitor (TIMP-1) gene expression in THP-1 monocytic cell line was investigated. Specific mitogen activated protein (MAP) kinase (ERK, p38, and JNK) inhibitors were used to elucidate the signaling pathways involved. Effect of atorvastatin was determined in the presence of CRP on the expression of genes. Time and dose-dependent experiments were performed in the presence of CRP. The results showed that the treatment of THP-1 cells with 100 μg of CRP/ml/106 cells for 24 h enhanced the expression of MMPs and TIMP-1 genes significantly. CRP upregulated the expression of these genes via FcγRII and utilized ERK signaling pathway to transduce signals. Atorvastatin was able to significantly attenuate CRP-induced MMPs expression and augmented TIMP-1 gene expression significantly. In conclusion, CRP is not only a risk marker for vascular events, but also directly involved in the mechanisms leading to remodeling and destabilization of atherosclerotic plaque. Also, atorvastatin serves as potential therapeutic modality to curb these harmful events.

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Acknowledgments

Authors wish to thank Indian Council of Medical Research (ICMR), New Delhi for financial assistance. Nitin Mahajan was awarded Senior Research Fellowship by ICMR, New Delhi.

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  1. Department of Experimental Medicine & Biotechnology, Research Block ‘B’, Postgraduate Institute of Medical Education & Research (PGIMER), Chandigarh, 160012, India

    Nitin Mahajan & Veena Dhawan

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  1. Nitin Mahajan
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  2. Veena Dhawan
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Correspondence to Veena Dhawan.

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Mahajan, N., Dhawan, V. Inhibition of C-reactive protein induced expression of matrix metalloproteinases by atorvastatin in THP-1 cells. Mol Cell Biochem 338, 77–86 (2010). https://doi.org/10.1007/s11010-009-0340-x

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  • DOI: https://doi.org/10.1007/s11010-009-0340-x

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