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Legionella pneumophila Outer Membrane Vesicles: Isolation and Analysis of Their Pro-inflammatory Potential on Macrophages
Published on: February 22, 2017
A sesquiterpenoid from Ligularia pleurocaulis modulated macrophages polarisation through TLR4 pathway
Yang Hu1,2, Hua Yang1, Xiaoqian Ding1
1Jiangsu Key Laboratory for Functional Substance of Chinese Medicine, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.
Abstract:
An eremophilane-type sesquiterpenoid (EPS), 3-oxo-eremophila-1,7(11)-dien-12,8β-olide, has been isolated from anti-inflammatory folk herbs, Ligularia pleurocaulis. The aim of present study is to explore protective effects of EPS on lipopolysaccharide (LPS)-induced inflammatory responses in acute lung injury (ALI). EPS treatments (40 and 80 mg/kg) significantly ameliorated LPS-stimulated pathological changes in lungs. Furthermore, in vivo and in vitro mechanism studies suggest that EPS exerts its protective effects on LPS-induced ALI by regulating macrophage polarisation via suppression of TLR4/MyD88-mediated MAPK and NF-κB signaling pathways, and EPS may be useful for the prevention on ALI in the clinical setting.
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