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Arthritis
Volume 2012 (2012), Article ID 805875, 16 pages
http://dx.doi.org/10.1155/2012/805875
Review Article

The Role of Different Subsets of Regulatory T Cells in Immunopathogenesis of Rheumatoid Arthritis

1Department of Immunology, School of Public Health, Tehran University of Medical Sciences, P.O. Box 6446, Tehran 14155, Iran
2Imam Hassan Mojtaba Hospital, Alborz University of Medical Sciences, Karaj, Iran

Received 21 July 2012; Revised 11 September 2012; Accepted 20 September 2012

Academic Editor: Ruben Burgos-Vargas

Copyright © 2012 Maryam Gol-Ara et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Rheumatoid arthritis (RA) is a common autoimmune disease and a systemic inflammatory disease which is characterized by chronic joint inflammation and variable degrees of bone and cartilage erosion and hyperplasia of synovial tissues. Considering the role of autoreactive T cells (particularly Th1 and Th17 cells) in pathophysiology of RA, it might be assumed that the regulatory T cells (Tregs) will be able to control the initiation and progression of disease. The frequency, function, and properties of various subsets of Tregs including natural Tregs (nTregs), IL-10-producing type 1 Tregs (Tr1 cells), TGF-β-producing Th3 cells, CD8+ Tregs, and NKT regulatory cells have been investigated in various studies associated with RA and collagen-induced arthritis (CIA) as experimental model of this disease. In this paper, we intend to submit the comprehensive information about the immunobiology of various subsets of Tregs and their roles and function in immunopathophysiology of RA and its animal model, CIA.