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国家卫生健康委员会
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关键词:毛细支气管炎;呼吸道合胞病毒;心房利钠肽;T-bet
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【摘要】目的 探究心房利钠肽(ANP)在呼吸道合胞病毒(RSV)毛细支气管炎患儿外周血单个核细胞(PBMC)中的表达及其对T-bet表达的影响,探讨其在RSV毛细支气管炎中的作用。方法 选取2017年8月至2018年4月滨州医学院附属医院30例RSV毛细支气管炎患儿,分为轻度组(16例)和中重度组(14例),另选同期本院健康体检儿童20例作为健康对照组。检测各组血浆中ANP、γ-干扰素(IFN-γ)的水平,以及PBMC中利钠肽受体A(NPRA)、T-bet表达水平。结果 与健康对照组相比,毛细支气管炎患儿血浆中ANP及PBMC中NPRA mRNA和蛋白表达水平随疾病严重程度加重而增高[轻度组:(612±27)ng/L、(1.41±0.17)、(0.669±0.035);中重度组:(1 041±38)ng/L、(2.58±0.28)、(1.537±0.022)];而血浆中IFN-γ及PBMC中T-bet mRNA和蛋白表达水平则呈进行性下降趋势[轻度组:(12.8±0.9)ng/L、(0.39±0.08)、(0.55±0.11);中重度组:(6.6±0.4)ng/L、(0.22±0.05)、(0.31±0.05)],组间两两比较差异均有统计学意义(均P<0.05)。结论 ANP信号通路可能通过下调T-bet表达参与毛细支气管炎的发病过程。
【Abstract】Objective To investigate the expression of atrial natriuretic peptide(ANP) in peripheral blood mononuclear cell(PBMC) and the effect on T-bet expression in children with respiratory syncytial virus(RSV) bronchiolitis. Methods From August 2017 to April 2018, 30 children with RSV bronchiolitis admitted to Binzhou Medical University Hospital were divided into mild group(16 cases) and medium-severe group(14 cases); 20 health children were recruited as normal control group. Expression levels of ANP and interferon-γ(IFN-γ) in plasma, natriuretic peptide receptor A(NPRA) and T-bet in PBMC were analyzed. Results Compared with the normal control group, plasma ANP, NPRA mRNA and protein expression levels in PBMC increased with the severity of bronchiolitis[mild group: (612±27)ng/L,(1.41±0.17),(0.669±0.035); medium-severe group: (1 041±38)ng/L,(2.58±0.28),(1.537±0.022)]; plasma IFN-γ, T-bet mRNA and protein expression levels in PBMC showed a downtrend among groups[mild group: (12.8±0.9)ng/L, (0.39±0.08), (0.55±0.11); medium-severe group: (6.6±0.4)ng/L, (0.22±0.05), (0.31±0.05)]; there were statistically significant differences among groups(all P<0.05). Conclusion ANP signaling pathway may be involved in the pathogenesis of bronchiolitis by down-regulating the expression of T-bet.
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