S-Space College of Medicine/School of Medicine (의과대학/대학원) Internal Medicine (내과학전공) Journal Papers (저널논문_내과학전공)
Peripheral blood CD4+ and CD8+ T cell type 1 and type 2 cytokine production in atopic asthmatic and normal subjects
- Cho, S-H; Stanciu, L A; Begishivili, T; Bates, P J; Holgate, S T; Johnston, S L
- Issue Date
- Clin Exp Allergy. 2002 Mar;32(3):427-33.
- Adult; Asthma/*blood/*complications; CD4-Positive T-Lymphocytes/*metabolism; CD8-Positive T-Lymphocytes/*metabolism; Cytokines/*biosynthesis/*blood; Forced Expiratory Volume/physiology; Humans; Hypersensitivity, Immediate/*blood/*complications; Immunoglobulin E/blood; Predictive Value of Tests; Reference Values; Severity of Illness Index; Staining and Labeling; Statistics as Topic; T-Lymphocyte Subsets/metabolism
- BACKGROUND: Increased production of IL-4 and IL-5 and decreased production of IFN-gamma by CD4+ T cells has been implicated in asthma pathogenesis. However, CD8+ T cells also produce type 1 and type 2 cytokines and the relative roles of CD4+ and CD8+ T cell cytokine production in asthma have not been previously studied. OBJECTIVE: To determine the production of the type 1 and type 2 cytokines by CD4+ and CD8+ T cell subsets in asthmatic and normal subjects. METHODS: Intracellular cytokine staining for IL-4, -5, -10, -13 and IFN-gamma was analysed in peripheral blood CD4+ and CD8+ T cells from 24 atopic asthmatic and 20 normal subjects. RESULTS: Both subsets of T cells produced all cytokines studied and there were no significant differences between CD4+ and CD8+ T cells in their capacity to produce either type 1 or type 2 cytokines. There were significantly increased frequencies of IFN-gamma-positive CD4+ (13.1 +/- 2.4%, vs. 7.3 +/- 1.4%) and CD8+ (20.0 +/- 2.9%, vs. 9.6 +/- 2.1%) T cells in asthmatic subjects compared with normal subjects (P < 0.05), but not in frequencies of CD4+ or CD8+ T cells staining positively for IL-4, -5, -10 or -13. CONCLUSION: The frequencies of peripheral blood CD8+ T cells producing type 1 and type 2 cytokines are comparable with the frequencies of CD4+ T cells. There was an increased frequency of IFN-gamma producing CD4+ and CD8+ T cells in asthmatic compared with normal subjects. Further studies investigating T cells derived from the airways and investigating various stages within the disease process are required to further elucidate the importance of type 2 and type 1 T cell cytokine production in the pathogenesis of human allergic disease.
- 0954-7894 (Print)
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