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Expression of vasoactive intestinal peptide in peripheral blood of children with hand, foot and mouth disease
REN Jin-Song, SUN Hao-Miao, ZHANG Lei, LIN Jing-De, WEN Cheng, FANG Dai-Hua
Chinese Journal of Contemporary Pediatrics ›› 2016, Vol. 18 ›› Issue (11) : 1106-1110.
PDF(1455 KB)
PDF(1455 KB)
Expression of vasoactive intestinal peptide in peripheral blood of children with hand, foot and mouth disease
Objective To investigate the expression of vasoactive intestinal peptide (VIP) in peripheral blood of children with hand, foot and mouth disease and its significance. Methods According to the condition of the disease, 86 children with hand, foot and mouth disease were classified into phase 1 group (19 children) and phase 2 group (67 children). ELISA was used to measure the concentrations of plasma VIP, interferon-γ (IFN-γ), and interleukin-4 (IL-4) in peripheral blood. Flow cytometry was used to measure CD3+, CD4+, and CD8+ T lymphocyte subsets. RT-PCR was used for qualitative detection of enterovirus 71 (EV71) RNA in stool. Results Compared with the phase 1 group, the phase 2 group had a significantly higher positive rate of EV71-RNA (P < 0.05) and significantly higher serum levels of IgG, IgA, IgM, and C3 (P < 0.05). The phase 2 group had significantly lower proportions of peripheral CD3+, CD4+, and CD8+ T lymphocyte subsets than the phase 1 group (P < 0.05), as well as significantly lower proportion of peripheral B cells and CD4+/CD8+ ratio than the phase 1 group (P < 0.05). The phase 2 group also had a significantly lower concentration of VIP in peripheral blood than the phase 1 group (P < 0.05). In the 86 children with hand, foot and mouth disease, the concentration of VIP in peripheral blood was positively correlated with the proportion of CD4+ T lymphocyte subset and CD4+/CD8+ ratio (r=0.533 and 0.532 respectively; P < 0.05). Conclusions VIP may be an important marker of the severity of hand, foot and mouth disease.
Vasoactive intestinal peptide / Hand,foot and mouth disease / T lymphocyte subset / Child
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