RG-II from Panax ginseng C.A. Meyer suppresses asthmatic reaction |
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Authors: | Jung In Duk Kim Hye Young Park Jin Wook Lee Chang-Min Noh Kyung Tae Kang Hyun Kyu Heo Deok Rim Lee Su Jung Son Kwang Hee Park Hee-ju Shin Sung Jae Park Jong-Hwan Ryu Seung-Wook Park Yeong-Min |
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Institution: | Department of Microbiology and Immunology, School of Medicine, Pusan National University, yangsan 626-770, Korea. |
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Abstract: | In asthma, T helper 2 (T(H)2)-type cytokines such as interleukin (IL)-4, IL-5, and IL-13 are produced by activated CD4(+) T cells. Dendritic cells played an important role in determining the fate of naive T cells into either T(H)1 or T(H)2 cells. We determined whether RG-II regulates the T(H)1/T(H)2 immune response by using an ovalbumin-induced murine model of asthma. RG-II reduced IL-4 production but increased interferon- gamma production, and inhibited GATA-3 gene expression. RG-II also inhibited asthmatic reactions including an increase in the number of eosinophils in bronchoalveolar lavage fluid, an increase in inflammatory cell infiltration in lung tissues, airway luminal narrowing, and airway hyperresponsiveness. This study provides evidence that RG-II plays a critical role in ameliorating the pathogenic process of asthmatic inflammation in mice. These findings provide new insights into the immunotherapeutic role of RG-II in terms of its effects in a murine model of asthma. |
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