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Published in: Arthritis Research & Therapy 5/2003

Open Access 01-10-2003 | Research article

Prevalence, clinical relevance and characterization of circulating cytotoxic CD4+CD28- T cells in ankylosing spondylitis

Authors: Christina Duftner, Christian Goldberger, Albrecht Falkenbach, Reinhard Würzner, Barbara Falkensammer, Karl P Pfeiffer, Elisabeth Maerker-Hermann, Michael Schirmer

Published in: Arthritis Research & Therapy | Issue 5/2003

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Abstract

Circulating CD3+CD4+CD28- cells exhibit reduced apoptosis and were found to be more enriched in patients with ankylosing spondylitis than in age-matched healthy control individuals (7.40 ± 6.6% versus 1.03 ± 1.0%; P < 0.001). Levels of CD4+CD28- T cells correlate with disease status as measured using a modified metrology score, but they are independent of age and duration of ankylosing spondylitis. CD4+CD28- T cells produce IFN-γ and perforin, and thus they must be considered proinflammatory and cytotoxic. These T cells share phenotypic and functional properties of natural killer cells, strongly expressing CD57 but lacking the lymphocyte marker CD7. MHC class I recognizing and activating natural killer cell receptors on the surface of CD4+CD28- T cells may be involved in a HLA-B27 mediated co-stimulation of these proinflammatory and cytotoxic cells.
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Metadata
Title
Prevalence, clinical relevance and characterization of circulating cytotoxic CD4+CD28- T cells in ankylosing spondylitis
Authors
Christina Duftner
Christian Goldberger
Albrecht Falkenbach
Reinhard Würzner
Barbara Falkensammer
Karl P Pfeiffer
Elisabeth Maerker-Hermann
Michael Schirmer
Publication date
01-10-2003
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 5/2003
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/ar793

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