期刊
INTERNATIONAL IMMUNOPHARMACOLOGY
卷 8, 期 4, 页码 574-580出版社
ELSEVIER
DOI: 10.1016/j.intimp.2008.01.009
关键词
lactic acid bacteria; inflammatory bowel; disease; glycosaminoglycan; dextran sulfate sodium; intestinal bacteria
To evaluate the effect of lactic acid bacteria (LAB) in inflammatory bowel diseases (IBD), inhibitory effect of several LAB isolated from intestinal microflora and commercial probiotics against NO production of lipopolysaccharide (LPS)-stimuLated RAW264.7 cells was measured and anti-inflammatory effect of NO production -inhibitory LAB, Lactobacillus plantarum HY115 and L. brevis HY7401, in dextran sulfate sodium (DSS)-induced experimental colitic mice was investigated. The oral administration of the LAB to mice inhibited colon shortening and myeloperoxidase productivity in DSS-induced colitic mice. These LABs repressed the mRNA expressions of IL-1 beta, TNF-alpha and IFN-gamma, as welt as the protein expressions of IL-1 beta and IL-6 proteins in the colon. The activation of the transcription factor, NF-kappa B, induced by DSS, was also inhibited by LAB. The administration of LAB reduced the degradation activities of chondroitin sulfate and hyaluronic acid of intestinal bacteria, induced by DSS, of which could induce the cytotoxic metabolites against intestinal cells. These findings suggest that NO-inhibitory LAB against LPS-stimuLated RAW264.7 cells may improve colitis by the regulation of the inflammatory cytokine expression via the activation of transcription factor NF-kB as welt as GAGs-degrading intestinal microflora. (c) 2008 Published by Elsevier B.V.
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