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乙型病毒性肝炎临床转归与机体细胞免疫功能状况的相关性研究

2015-03-13曾跃红等

中国医药导报 2015年5期
关键词:乙型肝炎病毒

曾跃红等

[摘要] 目的 探讨乙型病毒性肝炎患者外周血T淋巴细胞亚群、血清干扰素-γ(IFN-γ)和肿瘤坏死因子-α(TNF-α)的变化与疾病临床转归的关系。 方法 收集2009年1~12月益阳市中心医院诊治的352例乙肝病毒性肝炎患者,并选择同期健康人82例作为对照。采用流式细胞仪检测外周血T淋巴细胞亚群(CD3+、CD4+、CD8+),ELISA法检测细胞外血清IFN-γ和TNF-α,比较乙肝病毒性肝炎患者与健康人外周血T淋巴细胞亚群及IFN-γ和TNF-α水平。 结果 不同HBV-DNA载量的患者CD3+、CD4+、CD8+、CD4+/CD8+、IFN-γ和TNF-α水平与健康人比较,差异均有统计学意义(P < 0.05)。急性或亚急性肝衰竭、慢性HBV感染、隐匿性HBV感染患者CD3+、CD4+、CD8+、CD4+/CD8+、IFN-γ和TNF-α水平与健康人比较,差异均有统计学意义(P < 0.05)。212例HBc-IgM阳性HBV患者经保肝护肝基础治疗(106例)和IFN-α治疗(106例)6个月后,患者的CD3+、CD4+、IFN-γ和TNF-α水平仍较健康人显著升高,差异有统计学意义(P < 0.05),但CD4+/CD8+的比较差异无统计学意义(P > 0.05)。IFN-α治疗患者治疗6个月和随访1、3、5年时,HBV-DNA阴转率均高于保肝护肝基础治疗患者(P < 0.05)。 结论 乙型病毒性肝炎患者存在细胞免疫功能紊乱,其功能状态直接影响临床转归,动态监测患者T淋巴细胞亚群和血清IFN-γ、TNF-α对乙型病毒性肝炎的诊断、治疗、预后评估及个体化治疗都有重要的意义。

[关键词] 乙型肝炎病毒;细胞免疫功能;转归

[中图分类号] R512.62 [文献标识码] A [文章编号] 1673-7210(2015)02(b)-0008-05

[Abstract] Objective To explore the correlation between the change of T cell subgroups, serum IFN-γ, TNF-α in patients with hepatitis B and clinical prognosis. Methods From January to December 2009, in the Center Hospital of Yiyang City, 352 patients with hepatitis B were selected, and 82 healthy people were selected as control at the same time. Flow cytometer was used to detect the T cell subgroups (CD3+, CD4+, CD8+), and the level of serum IFN-γ and TNF-α were detected by ELISA, the results were compared. Results The levels of CD3+, CD4+, CD8+, CD4+/CD8+, IFN-γ and TNF-α in different HBV-DNA capacity patients were compared with those in healthy people, the differences were statistically significant (P < 0.05) The levels of CD3+, CD4+, CD8+,CD4+/CD8+, IFN-γ and TNF-α in acute or subacute liver failure, chronic HBV infection, delitescence HBV infection patients were compared with those in healthy people, the differences were statistically significant (P < 0.05). 212 patients with HBc-IgM positive HBV were given liver protection basic treatment (106 cases) and IFN-α treatment (106 cases) for 6 months, the CD3+,CD4+,IFN-γ and TNF-α levels were significantly higher than those in healthy people, the differences were statistically significant (P < 0.05), but the difference of CD4+/CD8+ was not statistically significant (P > 0.05). HBV-DNA negative rates of patients given IFN-α treatment at 6 months finished, follow-up 1, 3, 5 years were higher than those patients given liver protection basic treatment (P < 0.05). Conclusion The disorder of cellular immunity in patients with hepatitis B was confirmative. The functional status may to directly affect the hepatitis B prognosis. Dynamic monitoring of the T cell subgroups and serum IFN-γ, TNF-α on hepatitis B patients, which has important clinical significance to diagnosis, treatment, prognosis and individual therapy.

[Key words] HBV; Cellular immune function; Prognosis

乙型肝炎病毒(HBV)是一种嗜肝DNA病毒,人体感染后引起急性、慢性乙型肝炎或成为无症状病毒携带者,迁延难愈,可发展成为肝硬化、肝癌等[1],但目前对其发病机制尚未彻底清楚,多数学者认为与免疫应答或免疫调节功能紊乱有关。成人、儿童及幼儿感染HBV后,分别有5%、30%和95%成为慢性HBV感染者,这表明机体免疫成熟程度是决定HBV持续感染的重要因素[2]。因此深入研究其发病机制和感染慢性化的原因,了解不同类型HBV感染者免疫应答的特点与宿主免疫功能之间的关系,探讨机体自身细胞免疫功能在乙型病毒性肝炎转归中的作用是当前亟需解决的课题。

1 资料与方法

1.1 一般资料

对2009年1~12月益阳市中心医院(以下简称“我院”)诊治的HBV感染者进行回顾性流行病学调查后获得869例血清标本。……

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