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Integrins are critical for migration and function of leukocytes in inflammation and autoimmune diseases. Integrin CD11b on DCs inhibits full T-cell activation and facilitates the development of peripheral tolerance by suppressing Th17 differentiation. We previously reported that CD11b highly expressed dendretic cells produced high IL-10 and CD11b negatively regulated TLRs-induced proinflammatory cytokines...
In the intestine, bacterial components activate innate responses that protect the host. We hypothesize that bacterial components reduce Interleukin-8 (IL-8) production in intestinal epithelial cells stimulated by flagellin via the Toll-like receptor (TLR) signaling pathway. Caco-2 cells were pretreated with various doses of lipopolysaccharide (LPS), lipoteichoic acid (LTA), or low-dose flagellin (LDFL)...
The mechanism of glutamine (Gln)-mediated down-regulation of inflammation in the intestine is poorly understood. We hypothesize that Gln down-regulates lipopolysaccharide (LPS)-stimulated IL-8 production in intestinal epithelial cells via transcription factors that counteract the effect of LPS-mediated increase in IL-8. Caco-2 cells were incubated with different doses of Gln with or without methionine...
Glutamine (Gln) supplementation has been shown to decrease production of pro-inflammatory cytokines by the human intestinal mucosa. The mechanism of this is poorly understood. We hypothesize that Gln down-regulates lipopolysaccharide (LPS)-stimulated pro-inflammatory cytokine production in Caco-2 cells by nuclear factor-kappa B (NF-κB). Caco-2 cells were incubated with different concentrations of...
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