Journal of Jilin University Medicine Edition ›› 2016, Vol. 42 ›› Issue (05): 963-967.doi: 10.13481/j.1671-587x.20160524

Previous Articles     Next Articles

Relationship between endothelial microparticles and CD4+CD25+ Foxp3+ regulatory T cells in patients with acute coronary syndrome

LU Yongguang1, LI Lang2, SU Qiang2, ZENG Xiaocong2, YAN Hua1, HUANG Junzhang1   

  1. 1. Department of Cardiology, Second People's Hospital of Qinzhou, Guangxi Zhuang Autonomous Region, Qinzhou 535099, China;
    2. Department of Cardiology, First Affiliated Hospital, Guangxi Medical University, Nanning 530021, China
  • Received:2015-09-15 Online:2016-09-28 Published:2016-09-29

Abstract:

Objective: To explore the relationships between the endothelial microparticles (EMPs) in peripheral blood and CD4+CD25+Foxp3+ regulatory T cells and their cytokine levels in the patients with acute coronary syndrome(ACS), and to clarify the mechanism of EMPs in the pathogenesis of ACS by affecting the Treg cell differentiation and function.Methods: Twenty-three patients with stable angina (SAP) were allocated to SAP group, and 52 patients with ACS were allocated to ACS group. Twenty individuals with normal conventional coronary angiography results were recruited as control group. The levels of EMPs and the percents of CD4+CD25+Foxp3+ regulatory T cells in peripheral blood of the patients in various groups were measured by flow cytometry. The expressions of Foxp3 mRNA and the plasma levels of TGF-β1 were detected with Real-Time PCR and ELISA, respectively. Correlation analysis was performed between EMPs and regulatory T cells, Foxp3 mRNA expression level and TGF-β1 level. Results: Compared with control group and SAP group, the level of EMPs in peripheral blood of the patients in ACS group was increased significantly, but the percentage of regulatory T cells,the Foxp3 mRNA expression level and the plasma TGF-β1 level were decreased markedly(P<0.01). The correlation analysis showed that there were significantly negative correlation between EMPs and regulatory T cells, Foxp3 mRNA expression level and TGF-β1 level(r=-0.452,P=0.001;r=-0.466,P=0.001;r=-0.555,P=0.000). Conclusion: EMPs may involve in the process of occurrence and development of ACS and plaque instability by regulating the differentiation and function of CD4+CD25+Foxp3+ regulatory T cells.

Key words: acute coronary syndrome, endothelial microparticles, regulatory T cell, cell differentiation

CLC Number: 

  • R541.4