Quantification and molecular characterization of regulatory T cells in connective tissue diseases.

Abstract:

:The aim of our study was to investigate and characterize regulatory T cells (Treg) in peripheral blood of patients with connective tissue diseases (Systemic lupus erythematosus, systemic sclerosis, Sjögren's syndrome, poly- and dermatomyositis) as compared with blood from healthy controls. Treg cells were quantified and phenotypically characterized by flow cytometry while the expression level of Foxp3 mRNA was evaluated by real time PCR. A reduced percentage of peripheral blood Treg cells was found in patients than in controls, irrespective of the type of connective tissue disease. Treg cells, especially those expressing one of the phenotypical markers, seemed to differ not only between patients and healthy controls but also among types of diseases. Additionally, the presence of autoantibodies as well as disease activity appeared to be correlated with particular Treg cell populations, especially those expressing one of the examined phenotypical markers. Correlations with therapy suggested that glucocorticoids plus antimalarial or other immunosuppressor drugs diminished the percentage of Treg cells, especially of those with memory phenotype. These findings indicated dysregulations at the level of Treg cells and suggested an involvement of these cells in the pathology of connective tissue diseases. Moreover, our data are in agreement with the suggestion that Treg cells could be therapeutic targets for some autoimmune diseases.

journal_name

Autoimmunity

journal_title

Autoimmunity

authors

Banica L,Besliu A,Pistol G,Stavaru C,Ionescu R,Forsea AM,Tanaseanu C,Dumitrache S,Otelea D,Tamsulea I,Tanaseanu S,Chitonu C,Paraschiv S,Balteanu M,Stefanescu M,Matache C

doi

10.1080/08916930802282651

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

41-9

issue

1

eissn

0891-6934

issn

1607-842X

pii

902550415

journal_volume

42

pub_type

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