小儿哮喘患者呼出气冷凝液代谢组学研究

摘要

利用气相色谱-质谱联用法(GC-MS/MS)对小儿哮喘患者(Childhood asthma)和健康儿童(Healthy control)的呼出气冷凝液(Exhaled breath condensate,EBC)进行分析,寻找小儿哮喘患者EBC中的潜在标记物,为其发病机制及早期筛查提供科学依据.收集了21例小儿哮喘患者(年龄(8.2±1.6)岁)及17例健康儿童(年龄(8.1±1.3)岁)的EBC样本,采用GC-MS/MS获得化学成分的全扫描数据,通过主成分分析法对两组代谢物进行聚类分析,使用Metaboanalyst 3.0归属涉及的代谢通路.结果表明,小儿哮喘组和正常组EBC代谢图谱能很好地区分,鉴定了8个差异表达物可作为潜在的内源性生物标记物,提示淀粉和蔗糖代谢、赖氨酸降解、氨基糖核苷酸糖代谢、苯丙氨酸代谢可能在小儿哮喘发生发展过程中发挥重要作用.%Exhaled breath condensate (EBC) was analyzed by gas chromatography-mass spectrometry (GC-MS / MS) in childhood asthma and healthy control, aiming to find the potential markers of EBC in children with asthma, and provide a scientific reference for its pathogenesis and early screening. EBC samples were collected from 21 asthmatic children (age (8. 2 ±1. 6) years) and 17 healthy children ( age (8. 1 ±1. 3) years). GC-MS / MS was used to obtain the full scan data of chemical components. Cluster analysis was performed on the two groups of metabolites by principal component analysis (PCA), and potential biomarkers were found using Metaboanalyst 3. 0 attributable metabolic pathways. The results showed that the EBC metabolic maps of asthmatic group and normal group were very different, and eight endogenous potential biomarkers were identified, suggesting that starch and sucrose metabolism, lysine degradation, aminoglycan nucleoside metabolism, phenylalanine metabolism may play important roles in the development of asthma in children.