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学科主题: 临床检验诊断学
题名:
肾移植患者外周血人巨细胞病毒特异性CD8+T淋巴细胞频率及其γ干扰素分泌功能的初步研究
其他题名: A primary study on the level of human cytomegalovirus specmc CD8+ T lymphocytes and IFN-γ secretion effect in kidney transplant recipients
作者: 杨瑞锋; 徐国宾; 吴煦; 李志艳; 夏铁安
关键词: 肾移植 ; 巨细胞病毒 ; CD8阳性T淋巴细胞 ; T淋巴细胞,细胞毒性 ; 干扰素Ⅱ型 ; Kidney transplantation ; Cytomegalovirus ; CD8-positive T-lymphocytes ; T-lymphocytes,cytotoxic ; Interferon type Ⅱ
刊名: 中华检验医学杂志
发表日期: 2008
DOI: 10.3321/j.issn:1009-9158.2008.09.012
卷: 31, 期:9, 页:1016-1020
收录类别: 中国科技核心期刊 ; 中文核心期刊 ; CSCD
文章类型: Journal Article
摘要: 目的 研究肾移植患者外周血人巨细胞病毒(HCMV)特异性细胞毒T淋巴细胞(CTL)的频率及其γ干扰素(IFN-γ)分泌功能,以期探讨HCMV活化感染的免疫学机制.方法 选取HCMV血清学阳性的HLA-A*0201肾移植患者和健康对照者,将其分为3组:存在HCMV活化感染的肾移植组(9例)、无HCMV活化感染的肾移植组(29例)和健康对照组(54名);运用HLA-A2-NLVPMVATV-五聚体检测外周血中总的HCMV NLVPMVATV特异性CTL,同时以NLVPMVATV体外刺激PBMC,检测IFN-γ分泌性CTL.结果 在健康对照组、元HCMV活化感染的肾移植组和存在HCMV活化感染组中,HCMV特异性CTL频率中位数分别为1.19%(0~19.42%)、1.20%(0~18.40%)和3.2%(0.51%~18.90%),差异无统计学意义(H=5.34,P>0.05);IFN-γ分泌细胞频率中位数分别为0.72%(0~0.70%),0.47%(0~5.61%)和0.67%(0.07%~4.00%),差异无统计学意义(H=0.58,P>0.05),但HCMV特异性CTL中IFN-γ分泌细胞的比例分别为(60.18±19.16)%,(39.19±17.22)%和(20.02±13.26)%,组间比较差异有统计学意义(P<0.01).结论 肾移植组外周血中HCMV NLVPMVATV特异性CTL频率较健康对照组并无降低,但其分泌IFN-γ的比例降低,出现HCMV活化感染组IFN-γ分泌CTL比例降低更为明显.HCMV特异性CTL的IFN-γ分泌功能受损可能是造成肾移植患者HCMV活化感染的因素之一. Objective To investigate the level of human cytomegalovirus(HCMV)specific CD8+ T lymphoeytes in peripheral blood and the immune reaponae of HCMV reactivation after kidney transplantation.Methods Thirty-eight HCMV seropesitive HLA-A*0201 kidney transplant recipients(9 with HCMV infection and 29 without HCMV infection)and 54 healthy individuals were enrolled.The levels of total HCMV specific CD8+ T cells were measured using HLA-A2 pentamer folded with HCMV-peptide NLVPMVATV.The levels of IFN-γ secreting CD8+ T cells were measured by intracelluhr IEN-γ staining pulsed with the same peptide.Results The median levels of pentamer stained CD8+ T cells were 1.19%(0-19.42%),1.20%(0-18.40%)and 3.2%(0.51%-18.90%)in healthy group,negative HCMV group and positive HCMV group(H=5.34,P>0.05),respectively.The median levels of IFN-γ secreting CD8+ T cells were 0.72%(0-0.70%),0.47%(0-5.61%)and 0.67%(0.07%-4.00%),respectively(H=0.58,P>0.05).However,the mean proportions of IFN-γ secreting pentamer stained T cells relative to total HCMV specifc CIL were(60.18±19.16)%,(39.19±17.22)% and(20.02±13.26)%,respectively.There were significant differences among the groups(P<0.01).Condusiorm There was no significant difference of levels of HCMV specific CD8+ T lymphocytes in peripheral blood between the kidney transplant recipients and healthy individuals.However,the proportion of HCMV-specific IFN-γ producing CD8+ T cells in pentamer stained cells was reduced in the kidney transplant recipients especially in those with active HCMV infection,which may contribute to the inability to control HCMV reactivation.
语种: 中文
原文出处: 查看原文
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内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/43771
Appears in Collections:北京大学第一临床医学院_检验科_期刊论文

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作者单位: 北京大学第一医院检验科,100034

Recommended Citation:
杨瑞锋,徐国宾,吴煦,等. 肾移植患者外周血人巨细胞病毒特异性CD8+T淋巴细胞频率及其γ干扰素分泌功能的初步研究[J]. 中华检验医学杂志,2008,31(9):1016-1020.
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