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J Ethnopharmacol. 2012 Mar 27;140(2):271-6. doi: 10.1016/j.jep.2012.01.016. Epub 2012 Jan 20.

Anti-inflammatory effects of dichloromethane fraction from Orostachys japonicus in RAW 264.7 cells: suppression of NF-κB activation and MAPK signaling.

Author information

1
Department of Smart Foods and Drugs, Inje University, Gimhae 621-749, Republic of Korea.

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE:

Orostachys japonicus A. Berger (O. japonicus) is known to reduce the risk of many diseases.

AIM OF THE STUDY:

We investigated the anti-inflammatory effects of the dichloromethane (DCM) fraction from O. japonicus (OJD) in LPS-stimulated RAW 264.7 cells.

MATERIALS AND METHODS:

NO was measured using the Griess method. Key pro-inflammatory cytokines and mediators including IL-1β, TLR4, iNOS, and COX-2; 2 important pro-inflammatory transcription factors, NF-κB p65 and IκBα; and MAPKs such as ERK1/2, JNK, and p38 were analyzed by Western blotting.

RESULTS:

OJD significantly inhibited NO production, IL-1β, TLR4, iNOS, and COX-2 expression in LPS-stimulated cells. Additionally, it inhibited LPS-induced NF-κB p65 activation via inhibition of IκBα phosphorylation. Furthermore, phosphorylation of p38 and JNK was suppressed by OJD in a dose-dependent manner in the LPS-stimulated RAW 264.7 cells.

CONCLUSIONS:

Our data suggest that OJD inhibits the inflammatory response via suppression of NF-κB activation and MAPK signaling.

PMID:
22285522
DOI:
10.1016/j.jep.2012.01.016
[Indexed for MEDLINE]

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