Reference : Distinct tissue cytokine and chemokine mRNA expression in canine sino-nasal aspergill...
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/11685
Distinct tissue cytokine and chemokine mRNA expression in canine sino-nasal aspergillosis and idiopathic lymphoplasmacytic rhinitis
English
Peeters, Dominique mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Médecine interne des animaux de compagnie >]
Peters, I. R. [> >]
Helps, C. R. [> >]
Gabriel, Alexandra [> >]
Day, M. J. [> >]
Clercx, Cécile mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Pathologie médicale des petits animaux >]
2007
Veterinary Immunology and Immunopathology
Elsevier Science
117
95-105
Yes (verified by ORBi)
International
0165-2427
Amsterdam
The Netherlands
[en] aspergillosis ; chemokine ; cytokine ; dog ; rhinitis ; sinusitis
[en] Idiopathic lymphoplasmacytic rhinitis (LPR) and sino-nasal aspergillosis (SNA) are among the most common causes of nasal discharge in dogs. The pathogenesis of both diseases is poorly understood. Some have proposed that LPR is a chronic inflammatory response to an inhaled irritant, pollutant or allergen, but others suggest that most cases of LPR constitute undiagnosed cases of SNA. Local immune dysfunction is thought to permit opportunist infection in canine SNA. This study investigates the nature of the local tissue immune response mounted in canine LPR and SNA in order to determine whether these diseases have similar or distinct pathogenesis. Quantitative reverse transcriptase polymerase chain reaction was carried out on RNA isolated from nasal biopsies from diseased and control dogs, using specific assays designed to amplify messenger RNA (mRNA), encoding a panel of cytokines and chemokines. SNA was associated with significantly increased expression of mRNA encoding interleukin (IL)-6, IL-8, IL-10, IL-12p19, IL-12p35, IL-12p40, IL-18, IFN-gamma, TNF-alpha, TGF-beta, eotaxin-2 and all four monocyte chemoattractant proteins (MCPs) relative to controls. LPR was associated with significantly increased expression of mRNA encoding IL-5, IL-8, IL-10, IL-12p19, IL12p40, IL-18, TNF-alpha, TGF-(3, MCP-2 and MCP-3 relative to controls. There was significantly more expression of mRNA encoding IL-6, IL-8, IL-10, IL-12p35, IL-12p40, IL-18, IFN-gamma, TNF-alpha, TGF-(3 and all MCPs, and significantly less expression of IL-5 in dogs with SNA than in dogs with LPR. Thus, the profile of cytokine and chemokine gene expression in the nasal mucosa is different in dogs with LPR when compared to dogs with SNA. A partial Th2 immune response appears to be mounted in the nasal mucosa of dogs with LPR, whereas the mucosal immune response in canine SNA is of the Th1 type. Increase in IL-10 and TGF-(3 transcripts in dogs with SNA is thought to be implicated in the failure to clear the Aspergillus infection. These results constitute the first evidence that the pathogenesis of canine LPR and SNA is distinct. (C) 2007 Elsevier B.V All rights reserved.
Researchers ; Professionals
http://hdl.handle.net/2268/11685

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