Pulmonary responses to pathogen-specific antigens in latent Mycobacterium tuberculosis infection - 17/01/16
Summary |
In this study, we used ELISPOT to quantify frequencies of bronchoalveolar lavage (BAL) and peripheral blood T cells capable of producing IFNγ in response to PPD, antigen 85B, and Mtb-specific antigens CFP-10 and ESAT-6 in individuals with latent tuberculosis infection (LTBI) and Mtb-naïve controls. Compared to peripheral blood, BAL cells of LTBI subjects displayed significant enrichment for T cells responding to PPD, antigen 85B, and CFP-10, but not to ESAT-6. Baseline BAL cells of LTBI subjects displayed significant production of Mig (CXCL9) in response to PPD, antigen 85B, and CFP-10 as well. These findings suggest that enrichment for Mtb-specific T cells within BAL is not unique to active pulmonary tuberculosis and may, to the contrary, contribute to protection from re-infection in Mtb immune individuals.
Le texte complet de cet article est disponible en PDF.Keywords : Tuberculosis, Latent tuberculosis infection, Immunodiagnosis, Bronchoalveolar lavage, ELISPOT
Plan
Vol 96
P. 158-164 - janvier 2016 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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