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The role of TGF-beta in allergic inflammation
Carsten B Schmidt-Weber1, Kurt Blaser
1Swiss Institute of Allergy and Asthma Research (SIAF), Obere Strasse 22, CH-7270 Davos, Switzerland. csweber@siaf.unizh.ch
Abstract:
The transforming growth factor beta (TGF-beta) plays a dual role in allergic disease. It is important in suppressing T cells and also mediates repair responses that lead to unwanted remodeling of tissues. Advances in the immunology of allergy indicate that allergens cause overreactions in the lymphocyte compartment because of the lack or decreased number of suppressive, regulatory T cells. TGF-beta was shown to induce regulatory T cells and participate directly in suppression of effector T cells. Therefore, TGF-beta may help return reactivity to allergens to normal subsymptomatic activity. Whether chronic inflammatory diseases such as asthma profit from TGF-beta-mediated suppression of specific immune responses or whether the TGF-beta-mediated tissue remodeling aggravates diseases more than it helps control immune reactions is unclear. This article addresses these issues and future strategies in this field.
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