Abstract | BACKGROUND:
Asthma is an allergic inflammatory disease of the airways. The interaction between bronchial epithelial cells and eosinophils is an important feature of an asthma attack. Eotaxin, an eosinophil-specific C-C chemokine, is a potent chemoattractant involved in the mobilization of eosinophils into the airway after allergic stimulation. Cnidii monnieri fructus, the dried fruit of Cnidium monnieri Cusson, has been used as an antipruritogenic agent in ancient China. OsthoL is the major component of Cnidii monnieri fructus extract. We investigated the ability of osthol to regulate cytokine-induced eotaxin expression in the human bronchial epithelial cell line BEAS-2B. METHODS: RESULTS:
IL-4 and TNF-alpha significantly induced eotaxin expression in BEAS-2B cells. Expression of eotaxin was suppressed by osthol (0.1-10 microM) in a dose-dependent manner. Osthol did not suppress IL-4-induced p38, ERK or JNK expression. Osthol did suppress IL-4-induced STAT6 in a dose-dependent manner. CONCLUSION:
Osthol suppressed IL-4-induced eotaxin in BEAS-2B cells via inhibition of STAT6 expression. This data suggest that osthol might have potential for treating allergic airway inflammation.
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Authors | Pu-Rong Chiu, Wei-Te Lee, Yu-Te Chu, Min-Sheng Lee, Yuh-Jyh Jong, Chih-Hsing Hung |
Journal | Pediatrics and neonatology
(Pediatr Neonatol)
Vol. 49
Issue 4
Pg. 135-40
(Aug 2008)
ISSN: 1875-9572 [Print] Singapore |
PMID | 19054919
(Publication Type: Journal Article)
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Chemical References |
- Chemokines, CC
- Coumarins
- Drugs, Chinese Herbal
- Interleukin-4
- osthol
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Topics |
- Bronchi
(cytology, drug effects)
- Cell Line
- Chemokines, CC
(analysis)
- Coumarins
(pharmacology)
- Drugs, Chinese Herbal
(pharmacology)
- Epithelial Cells
(drug effects)
- Humans
- Interleukin-4
(pharmacology)
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