Linked Life Data

1286060

Source:http://linkedlifedata.com/resource/pubmed/id/1286060

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1993-3-18
pubmed:abstractText
Cyclosporin A (CsA) prevents most immature thymocytes from progressing to a mature phenotype and blocks the deletion of T cells that express self-specific TCR in the small population of cells that achieve maturity. The latter effect may explain the paradoxical observation that this immunosuppressive drug can induce autoimmunity in irradiated rodents and humans if administered while new T cells are developing in the thymus. This study shows that the repopulation of the periphery with mature T cells is delayed in irradiated CsA-treated mice, presumably because CsA blocks T cell development in the thymus. The peripheral repertoire of these mice contained self-reactive IL-2 producing T cells that could be detected in a sensitive limiting dilution assay. In addition, self-reactive T cell hybridomas were isolated from the IL-2 receptor+ population present in CsA-treated mice. One of these hybridomas expressed a TCR V beta chain that is normally expressed on thymocytes that are deleted via recognition of self-antigens. Despite the presence of self-reactive T cells that had escaped clonal deletion, CsA-treated mice rarely developed lethal autoimmune disease, implying that a peripheral mechanism of tolerance can prevent the onset of autoimmune disease.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0953-8178
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1341-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Self-reactive T cells are present in the peripheral lymphoid tissues of cyclosporin A-treated mice.
pubmed:affiliation
Department of Microbiology, University of Minnesota Medical School, Minneapolis 55455.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't