The anti-inflammatory potential of Cortex Phellodendron in vivo and in vitro: Down-regulation of NO and iNOS through suppression of NF-kappa B and MAPK activation
- Authors
- Choi, You Yeon; Kim, Mi Hye; Han, Jae Min; Hong, Jongki; Lee, Tae-Hee; Kim, Sung-Hoon; Yang, Woong Mo
- Issue Date
- Apr-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Phellodendron amurense; Lipopolysaccharide (LPS); Cytokine; Inflammation
- Citation
- INTERNATIONAL IMMUNOPHARMACOLOGY, v.19, no.2, pp.214 - 220
- Journal Title
- INTERNATIONAL IMMUNOPHARMACOLOGY
- Volume
- 19
- Number
- 2
- Start Page
- 214
- End Page
- 220
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12748
- DOI
- 10.1016/j.intimp.2014.01.020
- ISSN
- 1567-5769
- Abstract
- Cortex Phellodendri amurensis (CPA), derived from the dried bark of Phellodendron amurense Rupr., is a traditional medicine widely used to treat various inflammation-related diseases. The aim of this study was to investigate the anti-inflammatory activity and molecular mechanism of CPA in vivo and in vitro. Mice were pretreated with CPA (200 mg/kg, p.o.) for three consecutive days; 2 h after the last CPA treatment, mice were intraperitoneally injected with lipopolysaccharide (LPS) to induce endotoxemia (35 mg/kg). After treatment, we assessed survival rate, protein levels and cytokine expression. In addition, we confirmed the molecular mechanism of anti-inflammatory effects of CPA in LPS-stimulated macrophage RAW 264.7 cells. The results showed that CPA significantly increased mice survival rates and down-regulated LPS-induced interleukin (IL)-6, IL-1 beta and macrophage chemo-attractant protein (MCP)-1 in serum. In addition, CPA inhibited inducible nitric oxide synthase (iNOS), activation of nuclear factor (NF)-kappa B by degradation and phosphorylation of I kappa B alpha, and attenuated phosphorylation of mitogen-activated protein kinases (MAPKs; ERIC 1/2, p38 and JNK) from mice challenged with LPS. Moreover, in RAW 264.7 cells, CPA dose-dependently down-regulated LPS-stimulated NO, iNOS expression, as well as inflammatory cytokines and protein expression, consistent with the results in vivo. The anti-inflammatory properties of CPA in vitro and in vivo suggest its utility for attenuating inflammation-related diseases. (C) 2014 Elsevier B.V. All rights reserved.
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