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Published in: Digestive Diseases and Sciences 7/2008

01-07-2008 | Original Paper

Dendritic Cells and Toll-Like Receptors 2 and 4 in the Ileum of Crohn's Disease Patients

Authors: Manuel A. Silva, Rodrigo Quera, Jorge Valenzuela, Sa’ad Y. Salim, Johan D. Söderholm, Mary H. Perdue

Published in: Digestive Diseases and Sciences | Issue 7/2008

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Abstract

We investigated myeloid-dendritic cell (DC) marker and Toll-like receptor (TLR)-2 and 4 distributions in ileal samples from Crohn's disease (CD) patients (n = 14) and controls (n = 13). In controls, no TLR-2+ cells were observed, and higher numbers of TLR-4+ and DC-SIGN+ cells (P < 0.01) were detected in ileal samples when compared versus colonic tissues. In non-inflamed CD ileum, TLR-4+ and DC-SGN+ cells were depleted from superficial areas of the villus, and a significant CD1a+ cell infiltration (P < 0.01) was observed when compared to ileal controls and non-inflamed colonic CD samples. In inflamed CD ileum, DC-SIGN+, CD1a+, TLR-4+ and few TLR-4+DC-SIGN+ cells were detected as well as CD83 depletion. No correlation between TLR-2 and DC markers was detected in CD samples. A unique distribution of myeloid-DC markers characterized the CD ileum. Also, the presence of significant amounts of ileal CD1a+ cells may provide a relevant DC-mediated mechanism for antigen recognition in the pathogenesis of CD.
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Metadata
Title
Dendritic Cells and Toll-Like Receptors 2 and 4 in the Ileum of Crohn's Disease Patients
Authors
Manuel A. Silva
Rodrigo Quera
Jorge Valenzuela
Sa’ad Y. Salim
Johan D. Söderholm
Mary H. Perdue
Publication date
01-07-2008
Publisher
Springer US
Published in
Digestive Diseases and Sciences / Issue 7/2008
Print ISSN: 0163-2116
Electronic ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-007-0105-x

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