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Endocan, a novel inflammatory marker, is upregulated in human chondrocytes stimulated with IL-1 beta

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Abstract

Endocan is a circulating proteoglycan, involved in immunity, inflammation, and endothelial function. It has been recently suggested as a biomarker of inflammation, increased angiogenesis, and cancer. In vitro studies have shown that endocan expression could be upregulated by inflammatory cytokines and proangiogenic molecules. High endocan levels were also shown in arthritic joint tissues and particularly in sites characterized by severe inflammation. This study was performed to evaluate endocan expression in chondrocytes stimulated with IL-ß. mRNA and related protein production were measured for endocan, TNF-α, and IL-6. NF-kB activity was also evaluated. IL-1ß treatment induced a significant upregulation of both endocan and the inflammatory parameters as well as NF-kB activity. The treatment of chondrocytes with the specific NF-kB inhibitor before IL-1ß stimulation was able to reduce endocan and the inflammatory markers over-expression. The results of our study indicated that endocan is also expressed in human chondrocytes; furthermore, consistent with previous results in other cell types and tissues, IL-1ß-induced inflammatory response involves the expression of endocan through NF-kB activation. In this context, endocan seems to be an important inflammatory marker associated with the activation of NF-kB pathway.

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  1. Michele Scuruchi and Angela D’Ascola contributed equally to this work.

Authors and Affiliations

  1. Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy

    Michele Scuruchi, Angela D’Ascola, Giuseppe Mandraffino & Giuseppe M. Campo

  2. Department of Biomedical and Dental Sciences and Morphofunctional Images, University of Messina, Messina, Italy

    Angela Avenoso & Salvatore Campo

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  1. Michele Scuruchi
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  2. Angela D’Ascola
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Scuruchi, M., D’Ascola, A., Avenoso, A. et al. Endocan, a novel inflammatory marker, is upregulated in human chondrocytes stimulated with IL-1 beta. Mol Cell Biochem 476, 1589–1597 (2021). https://doi.org/10.1007/s11010-020-04001-4

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