Objective: To study the possible immunological mechanism of wheezing attack in children with cytomegalovirus (CMV) infection.
Methods: A total of 25 under-5-year-old children with wheezing following CMV infection were enrolled. The expression of serum regulatory T cells (Treg)/T helper 17 (Th17) cytokines interleukin (IL)-10, IL-6, and IL-17, and peripheral blood lymphocyte subsets were determined. Twenty age-matched healthy children were selected as the control group.
Results: The wheezing group had a significantly reduced serum IL-10 level, significantly increased IL-6 and IL-17 levels, significantly reduced levels of natural killer cells, and significantly increased levels of CD8+ T cells and CD19+ B cells, as compared with the control group.
Conclusions: Wheezing children with CMV infection have Treg/Th17 imbalance and cellular immune dysfunction, which may be an important immunological mechanism of the development of wheezing in children after CMV infection.
目的: 探讨巨细胞病毒（CMV）感染儿童喘息发作可能的免疫学发病机制。
方法: 选取5岁以下CMV感染喘息患儿25例，测定血清调节性T细胞（Treg）、辅助性T细胞17（Th17）细胞因子IL-10、IL-6、IL-17表达水平和外周血淋巴细胞亚群。20例同年龄段健康儿童作为对照组。
结果: 与对照组比较，CMV感染喘息组血清IL-10降低，IL-6、IL-17升高，淋巴细胞亚群NK细胞降低、CD8+T细胞、CD19+B细胞百分比升高，差异均有统计学意义。
结论: CMV感染喘息儿童存在Treg/Th17失衡、细胞免疫功能紊乱，推测Treg/Th17失衡及细胞免疫功能紊乱可能是CMV感染后儿童喘息发生发展重要的免疫学发病机制。