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Chinese Journal of Experimental and Clinical Infectious Diseases(Electronic Edition) ›› 2019, Vol. 13 ›› Issue (03): 239-244. doi: 10.3877/cma.j.issn.1674-1358.2019.03.012

Special Issue:

• Research Article • Previous Articles     Next Articles

Expression of chemokine ligand-10, T cells in peripheral blood of children with hand, foot and mouth disease and their correlation with prognosis

Wei Zhang1, Haomiao Sun1,(), Jie Wang1   

  1. 1. Department of Infectious Diseases, Xuzhou Children’s Hospital, 221000 Xuzhou, China
  • Received:2018-11-28 Online:2019-06-15 Published:2019-06-15
  • Contact: Haomiao Sun
  • About author:
    Corresponding author: Sun Haomiao, Email:

Abstract:

Objective

To investigate the expression of chemokine ligand-10 (CXCL-10) in peripheral blood of children with hand, foot and mouth disease (HFMD), and the correlation between T lymphocyte subsets and related cytokines and prognosis in children with HFMD.

Methods

From April 2016 to May 2017, a total of 60 children with HFMD were divided into severe group (10 cases) and mild group (50 cases) according to the diagnosis criteria, and were divided into good prognosis group (58 cases) and poor prognosis group (2 cases) according to the results of follow-up. While 52 infants with normal physical examination were selected as control group. The expression level of CXCL-10 in the peripheral blood of the two groups was detected by ELISA, the T-lymphocyte subpopulation of peripheral blood was detected by flow cytometry, and the levels of IL-17, IL-22, IL-23 and TNF-α in peripheral blood were detected by ELISA, respectively.

Results

The levels of CXCL-10, IL-17, IL-22, IL-23 and TNF-α in peripheral blood of children in severe group were significantly higher than those of control group and mild group (all P < 0.001). The levels of CXCL-10, IL-17, IL-22, IL-23 and TNF-α of children in mild group were higher than those in control group (all P < 0.005). CD3+ T, CD4+ T and CD8+ T lymphocytes in peripheral blood of children in severe group were significantly lower than those of mild group and control group (all P < 0 05). There was significant difference in the proportion of CD3+ T, CD4+ T, CD8+ T and CD4+/CD8+ lymphocytes between children in mild group and control group (all P < 0.05). Pearson correlation coefficient analysis showed that the expression of CXCL-10 in peripheral blood of children with HFMD were negatively correlated with the expression of CD3+, CD4+, CD8+ T and CD4+/CD8+ (r =-0.609, -0.714, -0.514, -0.524; P = 0.014, 0.023, 0.001, 0.006). The levels of IL-17, IL-22, IL-23 and TNF-α in peripheral blood of children with HFMD were positively correlated with the levels of CXCL-10 (r = 0.519, 0.0.473, 0.418, 0.459; P = 0.002, 0.006, 0.009, 0.007). The expression of CXCL-10 in peripheral blood of children with poor prognosis was significantly higher than that of children with good prognosis (t = 2.055, P = 0.044). The proportion of CD3+ T, CD4+ T and CD8+ T lymphocytes in peripheral blood of children with poor prognosis were significantly lower than those of children with good prognosis, with significant differences (t = 2.508, P = 0.015; t = 3.830, P < 0.0001; t = 2.222, P = 0.030).

Conclusions

The detection of peripheral blood CXCL-10 and T-lymphocyte subsets in children with HFMD is of great value to monitor and judge the prognosis.

Key words: Hand, foot and mouth disease, Chemokine ligand-10, T lymphocyte subset

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