Cytokine-activated human mesangial cells generate the neutrophil chemoattractant, interleukin 8.

Brown, Z; Strieter, R M; Chensue, S W; Ceska, M; Lindley, I; Neild, G H; Kunkel, S L; Westwick, J · Kidney Int · 1991

basic_science · Level V

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Abstract

Human mesangial cells (MC) in culture, when stimulated by interleukin 1 alpha(IL-1 alpha) or tumour necrosis factor (TNF alpha), but not with lipopolysaccharide (LPS), express interleukin 8 (IL-8) mRNA, and both cell associated and extracellular IL-8. Dexamethasone treatment of mesangial cells induced partial inhibition of the release of extracellular IL-8, while cell-associated IL-8 and IL-8 mRNA were not significantly altered. We propose that the mesangial cell has a direct role in the initiation and propagation of inflammatory events within the glomerulus via the generation of the chemotactic cytokine IL-8.

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