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目的：探讨病毒性肺炎与Ｔ细胞亚群的关系。方法：对１３７例病毒性肺炎患儿进行外周血Ｔ细胞亚群检测，同时对５６例重症病毒性肺炎患儿进行了胸腺肽和常规对照治疗观察。结果：呼吸道合胞病毒（ＲＳＶ）、腺病毒（ＡＤＶ）和副流感病毒感染时，ＣＤ３、ＣＤ４均有明显下降，ＣＤ４／ＣＤ８比值下降，比例失调，导致免疫功能低下，而引起一系列病理和临床变化。胸腺肽治疗组疗效明显，与常规治疗组相比，有显著性差异。结论：胸腺肽对提高患儿细胞免疫功能有显著作用。
Objective: To investigate the relationship between viral pneumonia and T cell subsets. Methods: Thirty-seven children with viral pneumonia were tested for T cell subsets in peripheral blood and 56 children with severe viral pneumonia were treated with thymosin and conventional control. Results: Infection with RSV, ADV and parainfluenza virus, CD3 and CD4 were significantly decreased, the ratio of CD4 / CD8 was decreased, and the ratio was imbalanced, resulting in a decrease of immune function, which caused a series of pathological and pathological changes Clinical changes. Thymopeptide treatment group was significantly effective, compared with the conventional treatment group, there was a significant difference. Conclusion: Thymosin plays a significant role in improving cellular immune function in children.