汪 云 李红霞 冯 涛 王媛媛 白 璐 宋 波 梅夏齐.不同病毒载量慢性乙型肝炎患者树突状细胞 B7-H1 表达及对
免疫功能的影响 *[J].,2014,14(6):1029-1032 |
不同病毒载量慢性乙型肝炎患者树突状细胞 B7-H1 表达及对
免疫功能的影响 * |
The Expression of B7-H1 on Dendritic Cell and its Effects on ImmuneFunctions in Patients with Different HBV DNA Loads* |
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DOI: |
中文关键词: 慢性乙型肝炎 树突状细胞 共刺激分子 B7-H1 白细胞介素 -12 免疫功能 |
英文关键词: Chronic hepatitis B Myeloid dendritic cells(mDC) B7-H1 IL-12 Immune functions |
基金项目:黑龙江省自然科学基金项目( D201076); 黑龙江省教育厅基金项目(11551250 ) |
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中文摘要: |
摘要 目的: 观察慢性乙型肝炎患者外周血树突状细胞表面共刺激分子 B7-H1 的表达及对免疫功能的影响。方法: 检测慢性乙型
肝炎患者肝功能、 HBV-DNA 水平, 将患者分为高病毒载量高 ALT 组 ( A 组) 、 高病毒载量低 ALT 组 (B 组) 、低病毒载量组 (C 组)
及正常对照组 (D 组)。 流式细胞术检测各组患者外周血树突状细胞表面 HLA-DR、 CD80、 CD86、 CD83、 CD1a、 B7-H1 表达, 酶联免
疫吸附试验 (ELISA ) 检测 DC 培养上清液和混合淋巴细胞培养上清液中细胞因子 IL-12、 IL-10 水平。结果: 慢性乙肝患者的树突
状细胞膜表面分子 HLA-DR、 CD80、 CD86、 CD83、 CD1a 的表达均明显降低 (A、 B、 C 组与 D 组比较分别为 42.3± 4.9%、 46.7± 7.0
%、 52.5 ± 6.3 % vs 94.5± 3.5%; 34.5 ± 5.3%、 39.9 ± 6.4%、 45.6 ± 5.2 % vs 90.6± 6.5%; 38.2 ± 8.6%、 36.1 ± 5.4%、 42.5 ± 6.8 % vs
87.7 ± 5.1%; 28.3 ± 6.5%、 25.6 ± 3.4%、 33.5 ± 4.3% vs 82.6 ± 4.8%; 32.3 ± 5.8%、 29.3 ± 5.3%、 48.3 ± 4.9 % vs 68.2 ± 5.2 % P<
0.05), B7-H1 表达水平明显升高(27.48± 21.4%、 21.83± 20.2%、 15.43± 10.32 % vs 4.23± 2.2 % P<0.05)。B7-H1 表达水平与 ALT
呈正相关, 与 IL-12 水平呈负相关。 结论: 慢性乙型肝炎患者树突状细胞功能低下, 其机制可能与树突状细胞高表达 B7-H1 有关。
B7-H1 高表达抑制了淋巴细胞的功能, 导致乙型肝炎病毒持续感染。 |
英文摘要: |
ABSTRACT Objective:To observe the expression of B7-H1 on dendritic cell and its effects on immune functions in patients with
chronic hepatitis B. Methods:60 patients with chronic hepatitis B were enrolled and divided into three groups according to the level of
HBV-DNA and ALT. Twenty healthy people were enrolled and served as controls. The expressions of CD80, CD83, CD86, HLA-DR,
CD1a and B7-H1 on myeloid dendritic cells (mDC) in the peripheral blood were analyzed by flow cytometry. The level of IL-10, IL-12 in
the supernatants of mixed lymphocytes reaction were detected by enzyme linked immunosorbent assay (ELISA). T-test was used for the
statistical analysis.Results: The expressions of CD80, CD83, CD86, HLA-DR, CD1a on mDC in CHB patients were significantly lower
than those in healthy controls and the B7-H1 expression on mDC were higher than controls. The differences were significant (P<0.05).
Conclusion:The expression level of B7-H1 was positively correlated with ALT level. The expression of B7-H1 on mDC in CHB
patients is higher than those of healthy people and results in immune suppression. It may be one of the reasons for chronic HBV infection. |
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