Absence of a prominent Th2 cytokine response in human tuberculosis.

Abstract:

:Depressed Th1 responses are a prominent feature of human tuberculosis, but an enhanced Th2 response has not been detected in peripheral blood T cells stimulated in vitro with Mycobacterium tuberculosis. In disease due to Mycobacterium leprae, Th2 cells predominate in tissue lesions of patients with extensive disease but are absent from peripheral blood. To determine if Th2 cells are present in tissue lesions of tuberculosis patients, we evaluated patterns of cytokine expression in lymph nodes from tuberculosis patients with or without human immunodeficiency virus infection and in controls without tuberculosis. Gamma interferon and interleukin-10 (IL-10) mRNA expression in tuberculosis patients with or without human immunodeficiency virus infection was high, whereas IL-4 expression in the same patients was low. Immunolabeling studies showed that macrophage production of IL-12 was increased in lymph nodes from tuberculosis patients, that gamma interferon was produced by T cells, and that IL-10 was produced by macrophages rather than Th2 cells. These results indicate that Th2 responses are not enhanced either systemically or at the site of disease in human tuberculosis.

journal_name

Infect Immun

journal_title

Infection and immunity

authors

Lin Y,Zhang M,Hofman FM,Gong J,Barnes PF

doi

10.1128/IAI.64.4.1351-1356.1996

subject

Has Abstract

pub_date

1996-04-01 00:00:00

pages

1351-6

issue

4

eissn

0019-9567

issn

1098-5522

journal_volume

64

pub_type

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