Glabridin inhibits lipopolysaccharide-induced activation of a microglial cell line, BV-2, by blocking NF-κB and AP-1
2010
Park, Sun Hong | Kang, Jong-Soon | Yoon, Yeo Dae | Lee, Kiho | Kim, Kang-Jeon | Yi, Ki-hun | Yi, Ch'ang-u | Moon, Eun-Yi | Han, Sang-Bae | Kim, Bong Hee | Kim, Hwan Mook | Park, Song-Kyu
Glabridin, a flavonoid present in licorice root, is known to have antiinflammatory and cardiovascular protective activities. The present study reports an inhibitory effect of glabridin on microglial activation. Glabridin dose-dependently attenuated lipopolysaccharide (LPS)-induced production of inflammatory mediators, including nitric oxide, tumor necrosis factor-α and interleukin-1β, in BV-2 cells, a murine microglia cell line. Moreover, mRNA expression of these inflammatory mediators was also suppressed by glabridin in LPS-stimulated BV-2 cells. Further study demonstrated that glabridin inhibited LPS-induced DNA binding activity of NF-κB and AP-1 in BV-2 cells. Collectively, the results presented in this report demonstrate that glabridin inhibits the production of inflammatory mediators in BV-2 cells and this is mediated, at least in part, by blocking NF-κB and AP-1 activation. The results suggest that glabridin might be a potential therapeutic agent for the treatment of neuroinflammatory and neurodegenerative diseases.
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