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- Document 0643
- DOCN M9620643
- TI CD8+ type 1 CD44hi CD45 RBlo T lymphocytes control intracellular
- Brucella abortus infection as demonstrated in major histocompatibility
- complex class I- and class II-deficient mice.
- DT 9602
- AU Oliveira SC; Splitter GA; Department of Animal Health and Biomedical
- Sciences, University; of Wisconsin, Madison 53706, USA.
- SO Eur J Immunol. 1995 Sep;25(9):2551-7. Unique Identifier : AIDSLINE
- MED/96011866
- AB Genetically engineered mice with a targeted disruption in the beta
- 2-microglobulin (beta 2-m) gene or the H2-I-A beta chain (A beta) which
- lack functional CD8+ or CD4+ T cells, respectively, were used to assess
- the role of T cell subsets in Brucella abortus infection. Murine
- brucellosis was markedly exacerbated in beta 2-m-deficient mice (beta
- 2-m-/-) compared to A beta mutant (A beta-/-) or C57BL/6 mice, strongly
- indicating that optimal resistance to B. abortus requires CD8+ T cells.
- Splenocytes from Brucella-primed beta 2-m-/-, A beta-/- and C57BL/6 mice
- exhibited a type 1 cytokine profile marked by elevated IFN-gamma mRNA
- expression and protein production, and basal levels of IL-2 and IL-4
- transcripts. B. abortus did not induce secretion of TGF-beta 1, but
- substantial IL-10 activity was detected in spleen cell supernatants from
- all mouse strains studied. CD8+ T cells from A beta-/- and C57BL/6 mice
- displayed a CD44hi CD45RBlo phenotype and a type 1 cytokine
- transcription profile featuring high levels of IFN-gamma mRNA.
- Additionally, we have shown the ability of C57BL/6 CD8+ CTL to kill
- Brucella-infected macrophages. This study illustrates the predominant
- role of MHC class I-restricted T cells in controlling B. abortus
- infection.
- DE Animal Antigens, CD44/IMMUNOLOGY Antigens, CD45/IMMUNOLOGY *Brucella
- abortus Brucellosis/*IMMUNOLOGY CD4-Positive T-Lymphocytes/IMMUNOLOGY
- CD8-Positive T-Lymphocytes/*IMMUNOLOGY Histocompatibility Antigens
- Class I/GENETICS/*IMMUNOLOGY Histocompatibility Antigens Class
- II/GENETICS/*IMMUNOLOGY Mice Mice, Inbred C57BL Mice, Mutant Strains
- Spleen/*IMMUNOLOGY/MICROBIOLOGY Support, Non-U.S. Gov't Support, U.S.
- Gov't, Non-P.H.S. JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
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-