淋巴细胞亚群检测在感染性疾病中的应用

目的通过检测不同感染性疾病患者外周血各淋巴细胞亚群来评估免疫功能,了解不同感染对宿主免疫功能的影响并分析其临床意义。方法利用流式细胞术分别检测细菌感染组(下称细菌组)31例,真菌感染组(下称真菌组)13例,病毒感染组(下称病毒组)62例以及对照组(下称对照组)15例的淋巴细胞亚群,并对其进行分析。结果与对照组比较,病毒组CD3~+T细胞比率升高,真菌组和病毒组CD4~+T细胞比率均降低,且真菌组低于病毒组,而2组CD8~+T细胞比率则升高,且真菌组高于病毒组,2组CD4~+/CD8~+比值均降低。3组中,NK细胞(CD16~+CD56~+)比率较对照组均有不同程度降低,其中细菌组明显低于其他2组。细菌组中,B细胞比率升高,革兰阳性球菌(G~+菌)组和革兰阴性杆菌(G~-菌)组NK细胞均较对照组降低,但2组间NK细胞差异无统计学意义。而2组中,B细胞比率则升高,其中G~+菌较G~-菌升高明显。在病毒组中,HBV组与登革热组CD3~+T细胞比率均较健康对照升高,且登革热组升高较乙型肝炎病毒组明显。其中登革热组CD4~+降低,CD8~+升高,CD4~+/CD8~+降低。2组中NK细胞比率均降低,HBV组较登革热组降低明显。结论检测淋巴细胞亚群可客观反映并有助于了解感染性疾病患者免疫功能状态,为患者诊断及预防提供实验室依据,以期降低感染及其并发症。

Detection of lymphocyte subsets in the application of the infectious diseases

Objective Investigate the different changes of host cellular immunity in patients with different infection by compa-ring peripheral blood lymphocyte subsets.Methods Flow cytometry was used to detect the peripheral blood lymphocyte subset a-mong 96 patients including 31 bacterial infection cases,13 fungal infection cases and 62 virus infection cases.Results Compared with control group the ratio of CD3 + T cell was increased in virus group,and the ratio of CD4 + T was decreased in fungi and virus group and the fungus is lower than the virus group,while the ratio of CD8 + T cell was increased in the two groups,and fungi group is higher than the virus,CD4 +/CD8 + ratio in the two groups were reduced.Three groups of NK cells (of CD16 + CD56 + )ratio was reduced to some extent,and bacteria group was lower than that of other two groups.The ratio of B cell was increased in Bacteria group and it was more obvious in the G+ bacteria.NK cells in G+ bacteria and G- bacteria group were relatively lower than control group,but the difference between the two groups was not significance.In virus infection cases,the ratio of CD3 + T in HBV group was higher than that of dengue fever group.And the ratio of CD3 + and NK cells were increased in the two groups.The ratio of CD4 + was decreased in dengue fever group.Conclusion Detection of lymphocyte subset can objectively reflect and help to under-stand the state of the immune function of patients with infectious diseases,providing laboratory basis for the diagnosis and preven-tion in order to reduce the infectious risk and side effect.