Abstract:
:The effect of intestinal molecules produced by the host on the virulence of Pseudomonas fluorescens is poorly documented. In the present work, we evaluated the secretion of human β-defensin-2 (hBD-2) by enterocytes after infection with P. fluorescens (a species previously suggested to be involved in inflammatory bowel disease) and investigated the effect of this host-defense peptide on the bacterial virulence. The results showed that P. fluorescens can induce hBD-2 production in Caco-2/TC7 cells via P38 and ERK MAPK-dependent pathways. Surprisingly, the exposure of P. fluorescens to low doses of the antimicrobial peptide was found to enhance its cytotoxic and proinflammatory effects suggesting a potential feedback mechanism in the dialog between bacteria and the host.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Madi A,Alnabhani Z,Leneveu C,Mijouin L,Feuilloley M,Connil Ndoi
10.1007/s00203-012-0865-3subject
Has Abstractpub_date
2013-03-01 00:00:00pages
189-95issue
3eissn
0302-8933issn
1432-072Xjournal_volume
195pub_type
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