Abstract |
Vdelta2 gammadelta T cells are readily activated by microbial antigens. In persons infected with human immunodeficiency virus type 1 (HIV-1), the number of gammadelta T cells remains the same or increases in association with reversal of the Vdelta2/Vdelta1 ratio from > or = 1 to < 1. Vdelta2 T cell responses to microbial antigens were tested in 11 HIV-1-infected (> or = 500 CD4 cells/mm3) and 7 uninfected persons. In persons with HIV-1 infection, Mycobacterium tuberculosis expanded Vdelta2 cells in 1 person as did Salmonella typhimurium in 4; however, Candida albicans antigens did not lead to more Vdelta2 cells. Vdelta2 responses to M. tuberculosis were enhanced by interleukin (IL)-2 in HIV-1-infected persons (from 1 subject to 7; P < .01) and were associated with increased interferon-gamma production. Bacterial antigens and IL-2 increased HIV-1 replication; M. tuberculosis antigens induced the greatest increase. Thus, in HIV-1-infected persons with > or = 500 CD4 cells/mm3, Vdelta2 T cell responses to bacterial antigens remain intact.
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Authors | K A Chervenak, M M Lederman, W H Boom |
Journal | The Journal of infectious diseases
(J Infect Dis)
Vol. 175
Issue 2
Pg. 429-33
(Feb 1997)
ISSN: 0022-1899 [Print] United States |
PMID | 9203665
(Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
- Antigens, Bacterial
- Antigens, Fungal
- HIV Core Protein p24
- Interleukin-2
- Receptors, Antigen, T-Cell, gamma-delta
- Interferon-gamma
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Topics |
- Antigens, Bacterial
(immunology)
- Antigens, Fungal
(immunology)
- Candida albicans
(immunology)
- Flow Cytometry
- HIV Core Protein p24
(biosynthesis)
- HIV Infections
(immunology)
- HIV-1
(growth & development)
- Humans
- Interferon-gamma
(metabolism)
- Interleukin-2
(immunology)
- Lymphocyte Activation
- Mycobacterium tuberculosis
(immunology)
- Receptors, Antigen, T-Cell, gamma-delta
(immunology)
- Salmonella typhimurium
(immunology)
- T-Lymphocyte Subsets
(immunology)
- T-Lymphocytes
(immunology)
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