T helper cells in patients with chronic hepatitis B virus infection  

Th细胞极化群体在慢性乙型肝炎病毒感染中的作用

作　　者：姜荣龙[1] 冯筱榕[1] 郭亚兵[1] 卢桥生[1] 侯金林[1] 骆抗先[1] 富宁[1] 

机构地区：[1]第一军医大学南方医院感染内科,广州510515

出　　处：《Chinese Medical Journal》2002年第3期422-424,共3页中华医学杂志（英文版）

摘　　要：OBJECTIVE: To investigate the compositions of Th1/Th2/Th3 cells in chronic hepatitis B virus (HBV)-infected individuals by determining the expression of interleukin-4 (IL-4), inetrferon-gamma (IFN-gamma), and transform growth factor-beta (TGF-beta) in single CD4(+) T cells isolated from peripheral blood mononuclear cells (PBMCs) and the role of polarized Th cell populations in chronic HBV-infection was discussed. METHODS: PBMCs from chronically infected HBV individuals were isolated, stimulated by PMA/Ionomycin/Monensin, and IL-4, IFN-gamma and TGF-beta production by CD4(+) T cells was determined by using fluorescence activated cell sorter (FACS) analysis. RESULTS: The percentage of IFN-gamma-producing T cells, IL-4-producing T cells and TGF-beta-producing T cells ranged from 2.3% - 18.6%, 1.1% - 8.7% and 0.7% - 7.1% respectively in CD4(+) T cells from non-infected individuals. Most of CD4(+) T cells from PBMCs in chronically infected HBV individuals were Th0 cells. The proportion of Th1 cells increased significantly with hepatic inflammatory activity, and in the active period of chronic hepatitis B infection were higher than those in the non-active period (P 0.05), but were higher than that from controls (P目的　了解慢性乙型肝炎病毒 (HBV)感染者外周血中辅助性T细胞 (Th)内干扰素 γ(IFN γ)、白细胞介素 4 (IL 4 )和转化生长因子 β(TGF β)的表达情况 ,以测定Th1/Th2 /Th3细胞的百分数 ,探明Th细胞各极化群体在慢性HBV感染中的作用。方法　常规分离外周血单个核细胞 (PBMC) ,在佛波脂 (PMA)、钙离子导入剂伊屋诺霉素Ionomycin、细胞内转运阻断剂莫能星Monensin的刺激下 ,采用流式细胞分析术 (FACS)对慢性HBV感染者外周血单个Th细胞内IL 4、IFN γ和TGF β的表达进行分析。结果　正常对照组 ,2 3% - 18 6 %的CD4 + T细胞为Th1细胞 ,0 9% - 9 2 %为Th2细胞 ;0 7% - 7 1%的细胞仅表达TGF β ,为Th3细胞。在慢性HBV感染者外周血单个CD4 + T细胞中 ,以Th0细胞居多 ;而Th1细胞则随着慢性乙型肝炎肝脏炎症活动的加剧而明显增多 ,在炎症活动明显的慢性乙型肝炎 ,其Th1百分数明显高于炎症活动呈静止状态的慢性乙型肝炎 ;Th2细胞在慢性HBV感染的不同阶段则较为恒定 (P >0 0 5 ) ,但明显高于对照组 (P<0 0 5 )。Th3细胞的百分数则随着肝组织炎症活动的加剧 ,其比例也明显减少 (P <0 0 5 ) ,在无症状携带者(AsC)组 ,Th3细胞的百分数远高于慢性乙型肝炎组及对照组 (P <0 0 5 )。Th3细胞重叠于Th2细胞之中。

关 键 词：CD4-Positive T-Lymphocytes Hepatitis B  Chronic Humans Interferon Type II INTERLEUKIN-4 T-Lymphocytes  Helper-Inducer Th1 Cells Th2 Cells Transforming Growth Factor beta 

分 类 号：R512.62[医药卫生—内科学]