1. Asiatic acid inhibits LPS-induced inflammatory response in human gingival fibroblasts.
- Author
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Hao, Chunbo, Wu, Buling, Hou, Zhiming, Xie, Qi, Liao, Tianan, Wang, Tao, and Ma, Dandan
- Subjects
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FIBROBLASTS , *CONNECTIVE tissue cells , *TRITERPENOIDS , *TERPENES , *CENTELLA asiatica - Abstract
Asiatic acid, a triterpenoid component isolated from Centella asiatica (L.) Urban, possesses antioxidative and anti-inflammatory activities. In this study, we aimed to investigate the anti-inflammatory effects of asiatic acid both in vivo and in vitro . HGFs or RAW264.7 cells were treated with asiatic acid 1 h before LPS treatment. Cell viability was measured by MTT assay. The levels of PGE2, NO, IL-6, and IL-8 were detected by ELISA. Protein expression levels were detected by western blot analysis. In vivo , asiatic acid significantly inhibited LPS-induced IL-6 and IL-8 expression levels in gingival tissues. In vitro , LPS-induced PGE2, NO, IL-6, and IL-8 production was significantly attenuated by asiatic acid. Asiatic acid also inhibited p65 NF-κB phosphorylation induced by LPS in HGFs. The expression of PPAR-γ was up-regulated by asiatic acid. Furthermore, GW9662, a PPAR-γ inhibitor, attenuated the inhibitory effect of asiatic acid on PGE2, NO, IL-6, and IL-8 production. Our results suggest that asiatic acid activates PPAR-γ, which subsequently inhibits LPS-induced NF-κB activation and inflammatory mediators production. Asiatic acid may offer therapeutic potential for the treatment of periodontitis. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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