國家衛生研究院 NHRI:Item 3990099045/3641
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/3641


    Title: Activation of human valve interstitial cells by a viridians streptococci modulin induces chemotaxis of mononuclear cells
    Authors: Shun, CT;Yeh, CY;Chang, CJ;Wu, SH;Lien, HT;Chen, JY;Wang, SS;Chia, JS
    Contributors: National Institute of Cancer Research
    Abstract: Infective endocarditis is characterized by inflammatory infiltrates of mononuclear cells in infected cardiac valve leaflets. To delineate the role of valve interstitial cells (VICs) in leukocyte recruitment, we stimulated human VICs with glucosyltransferase, a modulin from viridians streptococci. Interstitial cells were activated directly by glucosyltransferase in a dose-dependent manner through concerted mitogen-activated protein kinase and nuclear factor-B signaling pathways; activation resulted in up-regulation of synthesis and release of interleukin-6, interleukin-8, or monocyte chemoattractant protein-1 and enhanced transwell migration ofU937monocytic cells or primary mononuclear cells. The expression of glucosyltransferases and activation of VICs (nuclear localization of RelA) were detected in a rat model of experimental endocarditis. Proinflammatory cytokines also were detected in VICs from diseased human autopsy specimens but not in VICs from normal specimens. These results indicate that interstitial cells in the cardiac valve can be activated directly by bacterial modulins to recruit and retain mononuclear cells, likely contributing to the persistent inflammation characteristic of infective endocarditis.
    Date: 2009-05-15
    Relation: Journal of Infectious Diseases. 2009 May 15;199(10):1488-1496.
    Link to: http://dx.doi.org/10.1086/598485
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0022-1899&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000265509600012
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=65549129707
    Appears in Collections:[Jen-Yang Chen] Periodical Articles

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