Tuberculin-Specific T Cells Are Reduced in Active Pulmonary Tuberculosis Compared to LTBI or Status Post BCG Vaccination

Functional characteristics of tuberculosis (TB)—specific CD4 T cells were studied in clinically active pulmonary TB (n = 21) and high TB exposure including LTBI (n = 17). Following tuberculin stimulation, activated CD4 T cells were identified by flow-cytometry (CD154 up-regulation, degranulation, in...

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Veröffentlicht in:The Journal of infectious diseases 2011-02, Vol.203 (3), p.378-382
Hauptverfasser: Streitz, Mathias, Fuhrmann, Stephan, Powell, Fiona, Quassem, Ali, Nomura, Laurel, Maecker, Holden, Martus, Peter, Volk, Hans-Dieter, Kern, Florian
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container_end_page 382
container_issue 3
container_start_page 378
container_title The Journal of infectious diseases
container_volume 203
creator Streitz, Mathias
Fuhrmann, Stephan
Powell, Fiona
Quassem, Ali
Nomura, Laurel
Maecker, Holden
Martus, Peter
Volk, Hans-Dieter
Kern, Florian
description Functional characteristics of tuberculosis (TB)—specific CD4 T cells were studied in clinically active pulmonary TB (n = 21) and high TB exposure including LTBI (n = 17). Following tuberculin stimulation, activated CD4 T cells were identified by flow-cytometry (CD154 up-regulation, degranulation, interferon γ [IFN-γ], tumor necrosis factor α [TNF-α], and interleukin 2 [IL-2\ production). Interestingly, CD154 upregulation accounted for ∼80% of activated CD4 T cells in the active TB group but just 40% in the controls, whereas IFN-γ accounted for only ∼50% of activated cells in each group. The frequencies of CD4 T cells displaying at least 1 activation marker discriminated better between the groups than those displaying degranulation or IFN-γ production alone.
doi_str_mv 10.1093/infdis/jiq065
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subjects Adult
BACTERIA
Bacterial diseases
Bacterial diseases of the respiratory system
BCG Vaccine - immunology
Biological and medical sciences
Blood
CD40 Ligand - genetics
CD40 Ligand - metabolism
Female
Fundamental and applied biological sciences. Psychology
Gene Expression Regulation
Human bacterial diseases
Humans
Infections
Infectious diseases
Major and Brief Reports
Male
Medical sciences
Microbiology
Middle Aged
Mycobacterium
Mycobacterium tuberculosis
Pulmonary tuberculosis
T lymphocytes
T-Lymphocytes - immunology
T-Lymphocytes - physiology
Tuberculin
Tuberculin - immunology
Tuberculosis
Tuberculosis vaccine
Tuberculosis, Pulmonary - blood
Tuberculosis, Pulmonary - immunology
Tuberculosis, Pulmonary - pathology
Tuberculosis, Pulmonary - prevention & control
Tumor Necrosis Factor-alpha - genetics
Tumor Necrosis Factor-alpha - metabolism
Up regulation
Vaccination
title Tuberculin-Specific T Cells Are Reduced in Active Pulmonary Tuberculosis Compared to LTBI or Status Post BCG Vaccination
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