Alleviation of OVA-Induced Airway Inflammation by Flowers of Inula japonica in a Murine Model of Asthma

作者：Park Young Na; Lee Youn Ju; Choi Jeon Hyeun; Jin Meihua; Yang Ju Hae; Li Ying; Lee Jiean; Li Xian; Kim Keuk Jun; Son Jong Keun; Chang Hyeun Wook; Kim Jong Yeon; Lee Eunkyung^*

来源：Bioscience Biotechnology and Biochemistry, 2011, 75(5): 871-876.

DOI：10.1271/bbb.100787

• Inula japonica
• Inulae Flos extract (IFE)
• eosinophil
• bronchoalveolar lavage fluid (BAL)
• asthma

The flowers of Inula japonica (Inulae Flos) have long been used in traditional medicine for treating inflammatory diseases. The effects on OVA-induced asthmatic mice of an Inulae Flos extract (IFE) were evaluated in this study. The anti-asthmatic effects of IFE were determined by observing eosinophil recruitment, airway hyper-responsiveness (AHR), Th2 cytokine and IgE levels, and lung histopathology. The IFE treatment effectively reduced the percentage of eosinophils and Th2 cytokines in the bronchoalveolar lavage fluid (BALF) when compared to the levels in OVA-induced mice. IFE also suppressed AHR induced by aerosolized methacholine in OVA-induced mice. The results of the histopathological studies indicate that inflammatory cell infiltration and mucus hypersecretion were both inhibited by the IFE administration when compared to the effect on OVA-induced mice. The IFE treatment also suppressed the serum IgE levels and decreased Th2 cytokines in the supernatant of cultured splenocytes. These results suggest that IFE may have therapeutic potential against asthma.

• 出版日期2011-5