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Rhizoma Coptidis Inhibits LPS-induced MCP-1/CCL2 Production in Murine Macrophages Via an AP-1 and NFkappaB-dependent Pathway

Overview
Publisher Wiley
Specialties Biochemistry
Pathology
Date 2010 Jul 24
PMID 20652055
Citations 35
Authors
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Abstract

Introduction: The Chinese extract Rhizoma coptidis is well known for its anti-inflammatory, antioxidative, antiviral, and antimicrobial activity. The exact mechanisms of action are not fully understood.

Methods: We examined the effect of the extract and its main compound, berberine, on LPS-induced inflammatory activity in a murine macrophage cell line. RAW 264.7 cells were stimulated with LPS and incubated with either Rhizoma coptidis extract or berberine. Activation of AP-1 and NFkappaB was analyzed in nuclear extracts, secretion of MCP-1/CCL2 was measured in supernatants.

Results: Incubation with Rhizoma coptidis and berberine strongly inhibited LPS-induced monocyte chemoattractant protein (MCP)-1 production in RAW cells. Activation of the transcription factors AP-1 and NFkappaB was inhibited by Rhizoma coptidis in a dose- and time-dependent fashion.

Conclusions: Rhizoma coptidis extract inhibits LPS-induced MCP-1/CCL2 production in vitro via an AP-1 and NFkappaB-dependent pathway. Anti-inflammatory action of the extract is mediated mainly by its alkaloid compound berberine.

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