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Research Article

Lack of Correlation between Disease Activity and Decreased Stimulated Secretion of IL-10 in Lymphocytes from Patients with Celiac Disease

Pages 924-930 | Published online: 08 Jul 2009
 

Abstract

Background: Celiac disease (CD) is commonly believed to be a predominantly Th1 disease. However, the exact balance between the Th1 and Th2 arms, as well as the correlation to clinical parameters, remains unclear. The aim was to assess the Th1/Th2 cytokine profile and its correlation to clinical parameters in active and non-active CD patients. Methods: Peak, total secretion and secretory pattern of the Th1 cytokines (IFN- &#110 and IL-2) and Th2 cytokines (IL-4 and IL-10) were determined in resting and stimulated peripheral blood mononuclear cells (PBMC) from 19 CD patients with active and non-active disease and 20 normal controls. Results: Peak and total secretion of IL-10 were significantly reduced in CD patients compared with normal controls. This was due to a persistently flat secretory pattern of IL-10 over time in CD patients. In addition, IFN- &#110 /IL-10 and the IL-2/IL-10 ratios of peak and total secretion were higher in patients than in controls. In contrast, peak, total secretion and secretory pattern of IL-2, IFN- &#110 and IL-4 were comparable in patients and controls as well as the IL-2/IL-4 and IFN- &#110 /IL-4 ratios. No difference in the cytokine secretion or Th1/Th2 ratio was found between active and non-active patients or between pediatric and adult patients. Conclusions: These data indicate that the Th1/Th2 balance in CD is shifted towards Th1 cytokines because of a down-regulated IL-10 secretion. The aberrant profile of cytokine secretion of these patients is not associated with clinical parameters and suggests an inherent defect in IL-10 secretion in CD.

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