Effect of interleukin-33 on Th1/Th2 cytokine ratio in peripheral lymphocytes in asthmatic mice / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 1517-1522, 2014.
Article
in English
| WPRIM
| ID: wpr-322237
ABSTRACT
<p><b>BACKGROUND</b>Allergic asthma is a chronic airway inflammatory disease partly characterised by high concentration of T help 2 (Th2) cytokines in bronchoalveolar lavage fluid (BALF). There is no report on the relation of peripherally circulating blood lymphocytes and asthma. We explored the balance of Th2/Th1 cytokines in asthmatic mice. Exogenous recombinant interleukin (IL) 33 acted on murine peripheral circulating blood lymphocytes, IL-5 cytokine was selected for assessing Th2 cytokines and interferon-gamma (IFN-γ) for Th1 cytokines.</p><p><b>METHODS</b>Female specific pathogen free BABL/c mice were sensitised by intraperitoneal injection of 20 µg of ovalbumin emulsified in 1 mg of aluminium hydroxide gel in a total volume of 200 µl, and challenged for 30 minutes in 7 consecutive days with an aerosol of 2 g ovalbumin in 100 ml of PBS. Then we collected BALF and isolated lymphocytes from the peripheral blood. The lymphocytes were divided into two groups asthmatic group and normal group. Th1/Th2 cytokines was detected by enzyme-linked immunosorbent assay (ELISA) kits.</p><p><b>RESULTS</b>In the asthma group, we found numerous eosinophils and lymphocytes on the glass slides. We then confirmed that the optimal concentration of IL-33 was 10 ng/ml and time of IL-33 stimulating lymphocytes was 24 hours. In the asthma group, the production of IL-5 was significantly increased over normal group after stimulation with IL-33 (P < 0.05) and the production of IFNγ was supressed from IL-33 stimulated lymphocytes (P < 0.05).</p><p><b>CONCLUSION</b>IL-33 acts on lymphocytes of peripheral blood increasing secretion of Th2 cytokines and inhibiting secretion of Th1 cytokines.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Asthma
/
Enzyme-Linked Immunosorbent Assay
/
Lymphocytes
/
Interleukins
/
Interleukin-5
/
Interferon-gamma
/
Allergy and Immunology
/
Interleukin-33
/
Metabolism
/
Mice, Inbred BALB C
Limits:
Animals
Language:
English
Journal:
Chinese Medical Journal
Year:
2014
Type:
Article
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