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Exp Clin Endocrinol Diabetes 2013; 121(04): 214-219
DOI: 10.1055/s-0033-1333687
Article
© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York

Micro-inflammation Characterized by Disturbed Treg/Teff Balance with Increasing sIL-2R in Patients with Type 2 Diabetes

B. Cai
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
,
J. Zhang
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
,
M. Zhang
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
,
L. Li
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
,
W. Feng
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
,
Z. An
2   Department of Endocrinology, West China Hospital of Sichuan University, Sichuan, P.R. China
,
L. Wang
1   Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
› Author Affiliations
Further Information

Publication History

received 27 September 2012
first decision 07 December 2012

accepted 10 January 2013

Publication Date:
17 April 2013 (online)

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Abstract

Objectives:

Type 2 diabetes mellitus (T2DM) has been gradually considered as a micro- inflammatory disease. To explore the significance of peripheral CD4+ regulatory T cells and CD4+ effector T cells in T2DM, we analyzed inflammation, humoral and cellular immune state in patients with T2DM.

Patients and Methods:

118 patients with T2DM without complications and 116 healthy volunteers were included. Serum C-reactive protein (CRP), Complement 3 (C3), Complement 4 (C4), IgG, IgA, IgM, plasma sIL-2 R and peripheral T lymphocyte subsets (including CD4+ CD25high regulatory T cells (Treg) and CD4+ CD25low+median effector T cells (Teff)) were analyzed by rate nephelometry immunoassay, chemiluminescence immunoassay and flow cytometry, respectively.

Results:

(1) micro-inflammation state in T2DM: Serum CRP, C3, IgA and plasma sIL-2 R were all significantly higher in T2DM than those in healthy control (HC) (all P<0.05). (2) Disturbance of cellular immune in T2DM: Compared with HC, the percentage of peripheral CD3+CD4+T cells and ratio of CD3+CD4+T cells to CD3+CD8+T cells in T2DM were both significantly increased (P<0.05); and the percentage of peripheral CD4+CD25+T cells, Teff cells increased (P>0.05), Treg cells strikingly decreased in T2DM (P<0.05). A positive correlation between sIL-2R levels and peripheral CD4+CD25+T cells or Teff cell percentages, as well as a negative correlation between plasma sIL-2 R levels and serum HDL, LDL or CHOL levels in T2DM were shown (all P <0.05).

Conclusions:

Micro-inflammation state in T2DM was characterized by increased sIL-2 R, elevated CD3+CD4+T cells and the imbalance of Treg cells and Teff cells, which as one of the pathogeneses took part in inflammation reaction in T2DM.

Key words

immune imbalance - regulatory T cells - effector T cells
 

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