5-BDBD ameliorates an OVA-induced allergic asthma by the reduction of Th2 cytokines production

Hu, Bing and Feng, Xiaoqian and Wang, Li and Song, Yinli and Ni, Xiuqin (2018) 5-BDBD ameliorates an OVA-induced allergic asthma by the reduction of Th2 cytokines production. Iranian Journal of Basic Medical Sciences, 21 (4). pp. 364-369.

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Abstract

Objective(s): P2X4R is expressed in immunocyte and lung tissues. It has been a focus in inflammatory responses recently. This study investigated whether blockage of P2X4R attenuates allergic inflammation by modulating T cell response in ovalbumin-sensitized mice. Materials and Methods: Ovalbumin was used to sensitize and challenge for a mouse model. Intranasal application of 5-BDBD, P2X4R antagonist, were performed 3 hr before each airway allergen challenge. The lung was evaluated for P2X4R by real-time PCR and immunofluorescence. Th1/Th2 cytokines in bronchoalveolar lavage fluid were measured by ELISA. T-bet, Gata-3, and p-p38 MAPK were measured by Western blot or real-time PCR. Results: P2X4R was overexpressed in the lung after allergen challenge compared with the control group. Blockage of P2X4R decreased inflammation in the lung, IL-4 expression was reduced as well as IL-5; IFN-γ expression was elevated in BALF in ovalbumin-sensitized mice. Moreover, blockage of P2X4R inhibited ovalbumin-induced increased Gata-3 level and decreased T-bet level. Conclusion: These findings suggest that 5-BDBD ameliorates an ovalbumin-induced asthmatic attack by the downregulation of cytokines related to the Th2 cell.

Item Type: Article
Subjects: QV pharmacology
Divisions: Journals > Iranian J Basic Medical Sciences
Depositing User: ijbms ijbms
Date Deposited: 28 Jul 2018 04:07
Last Modified: 28 Jul 2018 04:07
URI: http://eprints.mums.ac.ir/id/eprint/9933

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