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Interleukin-2 Receptor Alpha and Beta Chain Expression by Circulating Alpha Beta and Gamma Delta T Cells in Inflammatory Bowel Disease

Overview
Journal Dig Dis Sci
Specialty Gastroenterology
Date 1995 Feb 1
PMID 7851192
Citations 6
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Abstract

The pathogenetic role of activated alpha beta and gamma delta T cells in inflammatory bowel disease (IBD) is not well defined. To elucidate this, interleukin-2 receptor (IL-2R) alpha and IL-2R beta single chain expression and coexpression by peripheral blood TCR alpha beta + cells and TCR gamma delta + cells was studied in 21 patients with ulcerative colitis (UC), 25 with Crohn's disease (CD), and 15 controls. The percentages of IL-2R alpha + beta-, IL-2R alpha-beta +, and IL-2R alpha + beta + TCR alpha beta + cells were increased in IBD patients with moderate and severe disease activity, as compared to controls (P < 0.01). In contrast, the percentages of IL-2R alpha-beta + and IL-2R alpha + beta + TCR gamma delta + cells were increased in patients with inactive UC (P < 0.01), but not in CD. The results suggest that activated alpha beta T cells are involved in the development of IBD. The differences in gamma delta T cell IL-2R expression between inactive UC and CD may correspond to a yet undefined etiopathogenetic difference between these two diseases.

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