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CURRENT OPINION IN IMMUNOLOGY
卷 19, 期 4, 页码 385-391出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.coi.2007.06.008
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Defensins are a component of the host response against bacterial infections. Multiple studies suggest a linked upregulation of (beta-defensins and pro-inflammatory cytokines expression in various tissues, as well as the possibility of mutual induction. Recent data demonstrate the importance of nucleotide-binding oligomerization proteins for the expression of defensins, and associate low levels of alpha-defensins expression by intestinal Paneth cells with susceptibility to Crohn's disease of the ileum. A novel anti-toxin activity has been identified for several alpha- and theta-defensins, expanding the repertoire of the antimicrobial functions of defensins. It has been shown that bacterial proteins can inactivate the action of defensins, and that pathogen type III secretion systems (T3SS) manipulate defensins expression via T3SS-mediated inhibition of the NF-kappa B pathway.
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