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Neurochemical Research

, Volume 41, Issue 7, pp 1570–1577 | Cite as

(7R,8S)-Dehydrodiconiferyl Alcohol Suppresses Lipopolysaccharide-Induced Inflammatory Responses in BV2 Microglia by Inhibiting MAPK Signaling

  • Si-Yu Liu
  • Peng Xu
  • Xiao-Ling Luo
  • Jin-Feng HuEmail author
  • Xin-Hua LiuEmail author
Original Paper

Abstract

(7R,8S)-Dehydrodiconiferyl alcohol (DDA), a lignan isolated from the dried stems of Clematis armandii, has been found to exert potential anti-inflammatory activity in vitro. In the present study, we investigated the effects and possible mechanisms of DDA on lipopolysaccharide (LPS)-mediated inflammatory response in murine BV2 microglia. Our results revealed that non-toxic concentrations (6.25–25 μM) of DDA markedly suppressed LPS-induced production of nitric oxide, expression of inducible nitric oxide synthase and cyclooxygenase-2, and release of inflammatory factors, including tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 in a concentration dependent manner. In addition, DDA time- and concentration-dependently attenuated LPS-induced phosphorylation of c-Jun N-terminal kinase 1/2 (JNK), but not protein kinase B, p38, or extracellular signal-regulated kinase 1/2. Moreover, DDA significantly suppress LPS-mediated nuclear factor-κB (NF-κB) activation by inhibiting phosphorylation and nuclear translocation of NF-κB p65. Collectively, our results demonstrated that DDA inhibited LPS-stimulated inflammatory response in BV2 cell, at least in part, through inhibition of NF-κB activation and modulation of JNK signaling.

Keywords

(7R,8S)-Dehydrodiconiferyl alcohol Lipopolysaccharide BV2 microglia Inflammation c-jun N-terminal kinase 1/2 

Notes

Acknowledgments

This work was supported by grants from National Natural Science Foundation of China (Nos. 81470164, 81573420 and 81330080) and the National Basic Research Program of China (973 Program, No. 2013CB530700).

Compliance with Ethical Standards

Conflict of interest

There are no conflicts of interest to declare.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of Pharmacology, School of PharmacyFudan UniversityShanghaiChina
  2. 2.Department of Natural Products Chemistry, School of PharmacyFudan UniversityShanghaiChina

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