Article (Scientific journals)
Altered expression of type I insulin-like growth factor receptor in Crohn's disease
El Yafi, F.; Winkler, Rose; Delvenne, Philippe et al.
2005In Clinical and Experimental Immunology, 139 (3), p. 526-533
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Keywords :
apoptosis; Crohn's disease; inflammation; insulin-like growth -factor receptor
Abstract :
[en] The fibrotic and antiapoptotic effects of insulin-like growth factors (IGF) are mediated by type I IGF receptor (IGF-1R). IGFs could play a role in intestinal stricturing and in the maintenance of inflammation in Crohn's disease (CD). We aimed to describe IGF-1R expression in CD intestinal lesions, to compare it to other intestinal inflammatory diseases and to correlate it with fibrosis and apoptosis. IGF-1R expression and apoptosis (active caspase-3) were studied by immunohistochemistry. Surgical intestinal specimens [17 CD, nine controls, six diverticulitis and four ulcerative colitis (UC)] were used. IGF-1R was expressed transmurally mainly by inflammatory cells (IC) and smooth muscle cells, both in diseased intestine and controls. IGF-1R positive IC were increased in the mucosa and the submucosa of CD (P < 0.007), and in involved areas compared to uninvolved areas (P = 0.03). In UC, the number of IGF-1R positive IC was only increased in the mucosa, and was not different from controls in the submucosa. In diverticulitis, the number of IGF-1R positive IC did not differ from controls. In CD submucosa, IGF-1R expression in IC was inversely correlated with apoptosis in uninvolved areas (P = 0.01). Expression of IGF-1R in submucosal fibroblast-like cells, subserosal adipocytes and hypertrophic nervous plexi was specific for CD. We have shown a transmural altered expression of IGF-1R in CD. This may suggest a role for IGF-1R in the maintenance of chronic inflammation and stricture formation in CD.
Disciplines :
Immunology & infectious disease
Gastroenterology & hepatology
Author, co-author :
El Yafi, F.
Winkler, Rose ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Delvenne, Philippe ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Boussif, N.
Belaiche, Jacques ;  Université de Liège - ULiège > Département des sciences cliniques > Hépato-gastroentérologie
Louis, Edouard  ;  Université de Liège - ULiège > Département des sciences cliniques > Hépato-gastroentérologie
Language :
English
Title :
Altered expression of type I insulin-like growth factor receptor in Crohn's disease
Publication date :
March 2005
Journal title :
Clinical and Experimental Immunology
ISSN :
0009-9104
eISSN :
1365-2249
Publisher :
Blackwell Publishing Ltd, Oxford, United Kingdom
Volume :
139
Issue :
3
Pages :
526-533
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 October 2009

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