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IL-10- and IL-20-Expressing Epithelial and Inflammatory Cells are Increased in Patients with Ulcerative Colitis.
MedLine Citation:
PMID:  23207823     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Interleukin (IL)-20, a pro-inflammatory cytokine, is a recently discovered member of the IL-10 family. This cytokine has been described in inflammatory diseases such as psoriasis and asthma. However, IL-20 expression in ulcerative colitis (UC) patients has not been yet described. The aim of this study was to evaluate IL-20 and IL-10 gene and protein expression and their receptors in the mucosa from UC patients. Forty UC patients and 18 non-inflamed controls were studied. IL-10, IL-20, IL-10R1, IL-10R2, IL-20R1 and IL-20R2 gene expression was determined by real time RT-PCR in colonic biopsies. Protein expression was evaluated by immunohistochemistry. Patients in remission had significantly higher IL-10 gene expression in mucosa compared with active patients and controls. Conversely, IL-10R1/B gene expression was decreased in remission compared with active UC patients and controls. IL-20 gene expression was lower in colonic mucosa from UC patients in remission compared with controls and active patients. IL-20R1/B mRNA expression was higher in remission compared with active UC patients and controls. IHQ analysis showed an increased IL-10-, IL-20-, and IL-20R2-producing cells in active UC patients. IL-10-, IL-20- and IL-20R2-expressing epithelial and inflammatory cells were increased in active UC patients, meanwhile IL-20R1 was up-regulated only on inflammatory infiltrates vs. controls. This is the first depiction of the presence of IL-20 and its receptors in UC. Much remains to be learned however, about the pathogenic mechanisms that lead to IBD. This cytokine/receptor imbalance may be implicated in the pathogenesis of UC.
Authors:
Gabriela Fonseca-Camarillo; Janette Furuzawa-Carballeda; Luis Llorente; Jesús K Yamamoto-Furusho
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-4
Journal Detail:
Title:  Journal of clinical immunology     Volume:  -     ISSN:  1573-2592     ISO Abbreviation:  J. Clin. Immunol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8102137     Medline TA:  J Clin Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04360, Coyoacán, Distrito Federal, México.
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