【作者】 谭艳；

【导师】 刘映霞；

【作者基本信息】 南华大学 ， 传染病学， 2010， 硕士

【摘要】 目的探讨艾滋病(AIDS)患者高效抗逆转录病毒治疗(HAART)前后T淋巴细胞表面某些归巢分子CD49d、CCR9、CD62L和CD4+T细胞表面辅助受体CCR5的表达变化情况及其意义。方法采用流式细胞术检测42例艾滋病患者和18例HIV阴性正常健康对照的外周血单核细胞(PBMC),分别观察CD3+、CD4+、CD8+T细胞表面CD49d、CD62L、CCR9和CD4+T细胞上CCR5的表达,并对CD4+CCR9+和CD4+CCR5+ T细胞进一步进行CD45RO表型分析,采用BD FACSDiva软件分析计算各组细胞表达的百分率,分析上述细胞群在治疗前后的变化及意义。结果AIDS患者未治疗组外周血CD3+CD49d+、CD3+CCR9+、CD3+CD62L+、CD4+CD49d+、CD4+CCR9+、CD4+CD62L+、CD8+CD49d+、CD8+CD62L+、CD4+CCR9+CD45RO+、CD4+CCR5+CD45RO+较治疗组明显降低;CD4+CCR9+CD45RO-、CD4+CCR5+、CD4+CCR5+CD45RO-明显升高,差异均有统计学意义。AIDS患者未治疗组外周血CD3+CD49d+、CD3+CCR9+、CD3+CD62L+、CD3+CD4+、CD4+CD49d+、CD4+CCR9+、CD4+CD62L+、CD4+CCR9+CD45RO+、CD4+CCR5+CD45RO+较对照组明显下降;CD4+CCR9+CD45RO-、CD4+CCR5+、CD4+CCR5+CD45RO-较对照明显升高,差异均有统计学意义。AIDS患者治疗组CD3+CD4+、CD3+CCR9+、CD4+CD62L+、CD8+CCR9+、CD8+CD62L+较对照组降低;CD3+CD8+、CD4+CCR5+较对照组升高,差异均有统计学意义。结论AIDS患者外周血T淋巴细胞表面肠道归巢分子CD49d、CCR9,淋巴结归巢分子CD62L,辅助受体CCR5出现异常改变;HAART可以逆转以上部分免疫病理改变;肠道归巢分子CD49d、CCR9和淋巴结归巢分子CD62L可建议作为评价艾滋病疾病进展和HAART后机体免疫重建情况的指标之一。本课题受到广东省科技厅科技计划项目(2006B36030016)资助。更多还原

【Abstract】 Objective To evaluate the expression of CD49d, CCR9, CD62L on T lymphocytes and co-receptor CCR5 on CD4+ T lymphocytes in AIDS patients before and after HAART,and furthermore to explore its clinical significance.Methods The study was performed in 42 cases of AIDS patients and 18 cases of healthy controls. The expression of CD49d, CCR9, CD62L on CD3+, CD4+ , CD8+T lymphocytes and CCR5 on CD4+ T lymphocytes, and CD45RO on CD4+CCCR9+ and CD4+CCR5+ T lymphocytes in AIDS patients and healthy controls were analysed by Flow cytometry. Software BD FACSDiva was used to calculate the percentage of expression,then study the changes and significance between untreated group and therapy group .Results Compared with therapy group , the frequency of CD3+CD49d+, CD3+CCR9+,CD3+CD62L+, CD4+CD49d+, CD4+CCR9+,CD4+CD62L+, CD8+CD49d+, CD8+CD62L+, CD4+CCR9+CD45RO+,CD4+CCR5+CD45RO+ T lymphocytes in untreated group were significantly decreased, while the frequency of CD4+CCR9+CD45RO - , CD4 + CCR5+, CD4+CCR5+CD45RO - T lymphocytes significantly increased; compared with controls, the frequency of CD3+CD49d+, CD3+CCR9+, CD3+CD62L+, CD3+CD4+ , CD4+CD49d+, CD4+CCR9+, CD4+CD62L+ , CD4+CCR9+CD45RO+, CD4+CCR5+CD45RO+ T lymphocytes in untreated group were significantly decreased, while the frequency of CD4+CCR9+CD45RO-, CD4+CCR5+, CD4+CCR5+CD45RO-T lymphocytes significantly increased; compared with controls, the frequency of CD3+CD4+,CD3+CCR9+, CD4+CD62L+, CD8+CCR9+, CD8+CD62L+ T cells in therapy group were significantly decreased,while the frequency of CD3+CD8+,CD4+CCR5+ T lymphocytes significantly increased.Conclusion The expression of gut homing receptor molecule CD49d, CCR9 and lymph node homing molecule CD62L, co-receptor molecule CCR5 in AIDS patients on T lymphocytes was impaired; HAART can partially reverse this immunologic pathological phenomena; CD49d, CCR9 and CD62L may be suggested to indicate the progression of AIDS and immunologic reconstitution after HAART.更多还原