中药1号治疗SIVmac感染猴和艾滋病模型猴的观察

中药１号治疗ＳＩＶｍａｃ感染猴２只，给药６周。结果：治疗组病毒血症在感染后４周消失，对照组病毒血症持续至１４周。淋巴结病理组织学显示，治疗组淋巴结滤泡数量较多，淋巴组织修复较好，结构基本保持原来状态。对照组淋巴结滤泡数量减少，并有滤泡耗竭现象。中药１号治疗模型猴２只，给药８周。结果：病毒学检查治疗和不治疗的猴无差异。淋巴结病理组织学表明，治疗猴淋巴结的结构和滤泡有明显修复现象。对照猴淋巴滤泡大量减少，出现滤泡耗竭和纤维化现象，并死亡１只。

SIVmac251感染猴艾滋病模型炎症相关因子表达变化

目的观察SIVmac251感染中国恒河猴前后炎症相关细胞因子的表达变化。方法 16只中国恒河猴感染SIVmac251,在感染前1天,感染2、4、6、8、10周分别采集外周静脉血,于感染前1天及感染10周采集浅表淋巴结和直肠组织。用染料法荧光定量PCR检测外周血PBMC和浅表淋巴结组织炎症及免疫活化相关因子m RNA水平,用ELISA及流式细胞仪检测血浆炎症及免疫活化相关蛋白;用HE染色和免疫组化检测浅表淋巴结组织和直肠黏膜组织病理改变情况和炎症相关细胞因子表达。结果 SIVmac251感染中国恒河猴后,其外周血PBMC、浅表淋巴结组织中IL-6、CD38、HLA-DR、IL-1β、IFN-α4、My D88、IL-33、TLR2、TLR7、HMGB1、IL-18 m RNA显著升高;CD4+CD38+HLA-DR+细胞占CD4+T细胞百分比在SIV感染后显著上升;血浆IL-6、IL-1β、IL-18、IFN-γ、D-二聚体水平均显著升高;SIV感染后恒河猴浅表淋巴结出现了显著的病理改变,表现为纤维化、淋巴滤泡增生、耗竭等现象;肠道黏膜HE染色则显示明显炎症。免疫组化染色结果显示,浅表淋巴结组织和直肠黏膜组织IL-1β、IL-18及HLA-DR表达均明显升高。结论 SIV感染引发了显著的炎症反应,这种炎症反应的特点是与免疫活化程度紧密相关。

Establishment of AIDS Animal Model with SIVmac239 Infected Chinese Rhesus Monkey

In the present research,two Chinese rhesus monkeys were inoculated intravenously with 5000 TCID50 of SIVmac239. The changes in the numbers of CD4+ T lymphocyte in peripheral blood,plasma viral loads,proviral DNA and humoral antibodies against virus were periodically monitored during 121 days. At the early stage of infection,proviral DNA had been detected in PBMCs,and infectious SIVmac239 virus had been isolated from PBMCs. At the same period,the numbers of CD4+ T lymphocytes were significantly decreased,and maintained at low level during the 121-day period of infection. Plasma viral loads reached the peak at week 2 post-inoculation and kept at a steady state subsequently. Moreover,antibodies against viral proteins were detected from plasma. All the results showed that the two Chinese rhesus monkeys had been infected with SIVmac239 successfully. This animal model can be applied for further AIDS researches.