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Peripheral regulatory T cells and anti-inflammatory cytokines in children with juvenile idiopathic arthritis.

Abstract：

BACKGROUND:Juvenile idiopathic arthritis (JIA) is a chronic, heterogenous inflammatory disease of unclear pathogenesis. JIA is hypothesized to be linked to a defective immune regulation. Anti-inflammatory cytokines belong to the best known regulatory factors. T-regulatory cells are a crucial cellular component of immune tolerance. One of their functions is synthesis of interleukin 10 (IL-10) and transforming growth factor beta1 (TGF-β1). The aim of this study was to determine the proportion of T-regulatory cells (CD4+CD25highFOXP3+) in peripheral blood, and serum levels of TGF-β1 and IL-10 in patients with JIA. METHODS:The study included 25 patients with newly diagnosed JIA: oligoarthritis (n=17) and polyarthritis (n=8). The control group was comprised of 17 healthy children. CD4+CD25highFOXP3+ T cells in peripheral blood were quantified by means of three-color flow cytometry. Serum concentrations of TGF-β1 and IL-10 were estimated with ELISA. RESULTS:The proportion of peripheral CD4+CD25highFOXP3+ cells in patients with JIA was significantly higher than in the controls (p=0.04). The two groups did not differ significantly in terms of their TGF-β1 and IL-10 concentrations. CONCLUSIONS:At the time of diagnosis, children with JIA presented with an elevated proportion of T-regulatory cells (CD4+CD25highFOXP3+) in peripheral blood. Anti-inflammatory cytokines, IL-10 and TGF-β1, are not upregulated in the serum of patients with JIA, and therefore should not be considered as biomarkers of this condition.

journal_name

Acta Biochim Pol

journal_title

Acta biochimica Polonica

authors

Sznurkowska K,Boćkowska M,Zieliński M,Plata-Nazar K,Trzonkowski P,Liberek A,Kamińska B,Szlagatys-Sidorkiewicz A

doi

10.18388/abp.2017_2308

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

119-123

issue

1

eissn

0001-527X

issn

1734-154X

pii

2308

journal_volume

65

pub_type

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