Abstract：
:Defensins and cathelicidins are prevalent and essential gastrointestinal cationic antimicrobial peptides (CAPs). However, these defensive peptides are not infallible because certain enteropathogens can overcome their protective function. Furthermore, impaired defensin synthesis has been linked to the occurrence of Crohn's disease (CD), a chronic inflammatory bowel disease. Recently, defective bacterial sensing through NOD1 and NOD2 has been related to reduced defensin production, CD predisposition and susceptibility to enteric infection. Hence, we propose that microbial sensors at the gut interface monitor the levels of these effector peptides, which might function as "danger" signals to confer tolerance and alert immunocytes. Further work is required to clarify how gastrointestinal CAPs are regulated and to assess their role in maintaining epithelial homeostasis and triggering adaptive immunity.
journal_name
Trends Microbioljournal_title
Trends in microbiologyauthors
Peyrin-Biroulet L,Vignal C,Dessein R,Simonet M,Desreumaux P,Chamaillard Mdoi
10.1016/j.tim.2006.08.008subject
Has Abstractpub_date
2006-10-01 00:00:00pages
432-8issue
10eissn
0966-842Xissn
1878-4380pii
S0966-842X(06)00212-5journal_volume
14pub_type
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