Baatartsogt Oyungerel1,
Heekyong Lim1,
Chi-Ho Lee2,
Eun-Hee Choi3,
Guan-Hao Li4,
Kang-Duk Choi1 
For correspondence:- Kang-Duk Choi Email: kchoi04@hknu.ac.kr Tel:+82316705422
Received: 4 September 2013 Accepted: 10 October 2013 Published: 24 December 2013
Citation: Oyungerel B, Lim H, Lee C, Choi E, Li G, Choi K. Anti-inflammatory Effects of Magnolia sieboldii Extract in Lipopolysaccharide-Stimulated RAW264.7 Macrophages. Trop J Pharm Res 2013; 12(6):913-918 doi: 10.4314/tjpr.v12i6.8
© 2013 The authors.
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Purpose: To investigate the effect of Magnolia sieboldii extract (MSE) on the production of pro-inflammatory cytokines by macrophage.
Methods: The whole plant of M. sieboldii was extracted with methanol at room temperature. The in vitro anti-inflammatory activity of MSE was investigated on lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. LPS-induced nitric oxide(NO) production was determined by Griess method. Production of pro-inflammatory cytokines including Interleukin-1 beta (IL-1 β), Interleukin-6 (IL-6), tumor necrosis factor- alpha (TNF-α) and cyclooxygenase-2 (COX-2) was examined using reverse trancriptase - polymerase chain reaction (RT-PCR) and Western blot analysis.
Results: Under in vitro conditions, MSE in doses ranging from 25 - 100 μg/mL significantly inhibited lipopolysaccharide (0.5 μg/mL)-induced nitric oxide production (p < 0.001), and the production of pro-inflammatory mediators (p < 0.05).
Conclusions: The anti-inflammatory effect of MSE on pro-inflammatory cytokines seems to ameliorate inflammatory symptoms via immune regulation.
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