Production of interleukin 4 and interferon gamma in CD8+ T cells from patients with intrinsic and extrinsic asthma / 천식및알레르기
Journal of Asthma, Allergy and Clinical Immunology
;
: 65-72, 2001.
Article
in Korean
| WPRIM
| ID: wpr-105652
ABSTRACT
BACKGROUND:
Asthma has been divided clinically into extrinsic and intrinsic variants. However, it is not clear whether these two types of clinically different asthma are mediated by immunolo- gically common pathogenesis or not. Recently, the role of CD8+ T cells in allergic inflammation was suggested.OBJECTIVES:
The aims of this study were to determine the role of CD8+ T cells in asthma through the production of interleukin 4 (IL-4) and interferon gamma (IFN-gamma), and to see if there were any differences in cytokine production in CD8+ T cell by the two clinically different asthma types, intrinsic and extrinsic asthma.METHOD:
Peripheral blood mononuclear cells from intrinsic and extrinsic asthmatic patients and from healthy subjects were cultured and stimulated with phorbol ester and calcium ionophore. A three-color flow cytometric analysis was used for IL-4 and IFN-gamma detection in CD8+ T cells.RESULTS:
Intracytoplasmic IL-4 and IFN-gamma positive CD8+ T cells were significantly higher in asthmatic patients compared to normal subjects. However, there were no significant differences of IL-4 and IFN-gamma production between intrinsic and extrinsic asthmatic patients (IL-412.5+/-4.2% in intrinsic asthmatics, 16.3+/-7.2% in extrinsic asthmatics, 4.2+/-2.1% in normals; IFN-gamma 33.4+/-3.2%, 35.4+/-5.5%, 25.3+/-9.8%, respectively)CONCLUSION:
These results suggest that intrinsic and extrinsic asthma have common immuno- pathogenesis and CD8+ T cells seem to participate in asthmatic inflammation by producing IL-4 and IFN-gamma.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Asthma
/
T-Lymphocytes
/
Calcium
/
Interleukins
/
Interferons
/
Interleukin-4
/
Inflammation
Limits:
Humans
Language:
Korean
Journal:
Journal of Asthma, Allergy and Clinical Immunology
Year:
2001
Type:
Article
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