Pulmonary immune-compartment-specific interferon gamma responses in HIV-infected individuals with active tuberculosis (TB) in an area of high TB prevalence.
Pulmonary immune-compartment-specific interferon gamma responses in HIV-infected individuals with active tuberculosis (TB) in an area of high TB prevalence.
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在结核病高发地区，患有活动性结核病 (TB) 的 HIV 感染者的肺免疫室特异性干扰素 γ 反应。
DOI：
10.1155/2012/308473
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发表时间：
2012
影响因子：
--
通讯作者：
Suchard,MS
中科院分区：
文献类型：
--
作者：
Buldeo,S;Murdoch,DM;Suchard,MS
There is a paucity of data on the pulmonary immune‐compartment interferon gamma (IFNγ) response toM. tuberculosis, particularly in settings of high tuberculosis (TB) prevalence and in HIV‐coinfected individuals. This data is necessary to understand the diagnostic potential of commercially available interferon gamma release assays (IGRAs) in both the pulmonary immune‐compartment and peripheral blood. We used intracellular cytokine staining by flow cytometry to assess the IFNγresponse to purified protein derivative (PPD) and early secretory antigen 6 (ESAT6) in induced sputa (ISp) and blood samples from HIV‐infected, smear‐negative, TB suspects. We found that individuals with active TB disease produced significantly less IFNγin response to PPD in their induced sputa samples than individuals with non‐active TB (control group). This difference was not reflected in the peripheral blood, even within the CD27− CD4+ memory T lymphocyte population. These findings suggest that progression to active TB disease may be associated with the loss of IFNγsecretion at the site of primary infection. Our findings highlight the importance of studying pulmonary immune‐compartmentM. tuberculosisspecific responses to elucidate IFNγsecretion across the spectrum of TB disease.
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DOI：
10.1099/0022-1317-64-5-1031
发表时间：
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DOI：
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