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  • Title: Cytokine-induced production of monocyte chemoattractant protein-1 by cultured human mesangial cells.
    Author: Rovin BH, Yoshiumura T, Tan L.
    Journal: J Immunol; 1992 Apr 01; 148(7):2148-53. PubMed ID: 1532001.
    Abstract:
    The infiltration of the glomerulus by monocyte-derived macrophages is an important step in the pathogenesis of glomerular injury. The factors regulating glomerular leukocyte traffic remain unknown. We postulated that the glomerular mesangial cell (MC) may participate in the development of glomerular inflammation through the production of the monocyte-specific chemotactic factor, monocyte chemoattractant protein-1 (MCP-1). Using a cell culture system, we found that human MC produced a basal level of monocyte chemotactic activity, which was significantly increased by the inflammatory cytokines IL-1 beta and TNF-alpha. This increase in bioactivity correlated with the increased expression of MCP-1 mRNA by cytokine-conditioned MC. The total chemotactic activity of MC-conditioned supernatants was reduced by more than 80% after immunoadsorption with a specific anti-MCP-1 antibody. Thus, MC could play a role in inflammatory glomerular conditions through the production of MCP-1.
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