alexa Deoxysappanone B, a homoisoflavone from the Chinese medicinal plant Caesalpinia sappan L., protects neurons from microglia-mediated inflammatory injuries via inhibition of IκB kinase (IKK)-NF-κB and p38 ERK MAPK pathways.
Pharmaceutical Sciences

Pharmaceutical Sciences

Medicinal & Aromatic Plants

Author(s): Zeng KW, Yu Q, Song FJ, Liao LX, Zhao MB,

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Abstract Caesalpinia sappan L. (Lignum Sappan) is a Chinese medicinal plant for treating ischemic cerebral apoplexy. Deoxysappanone B (DSB), a homoisoflavone compound isolated from C. sappan L. (Lignum Sappan), was studied for anti-neuroinflammatory and neuroprotective properties using lipopolysaccharide (LPS)-induced BV-2 microglia neuroinflammation model and LPS-induced microglia-neuron co-culture system. Our findings showed that DSB effectively inhibited BV-2 microglia-mediated neuroinflammatory mediators׳ release including NO, PGE₂, TNF-α, IL-6 and reactive oxygen species. Moreover, DSB markedly protected neurons against inflammatory microglia-mediated neurotoxicity in a microglia-neuron co-culture system. Mechanism study revealed that DSB blocked two major neuroinflammation-related signaling pathways including IKK-IκB-nuclear factor kappaB (NF-κB) and p38/ERK mitogen-activated protein kinase (MAPK) cascades, further leading to the inhibition of neuroinflammatory mediators׳ production. The present study provides evidence that the anti-neuroinflammatory and neuroprotective effect of DSB are due to the suppression of neuroinflammatory mediators׳ production as well as inflammation-induced neurotoxicity through regulation of multi-targets. Therefore, DSB may serve as a neuroprotective agent for the treatment of neuroinflammatory disorders and inflammation-related neuronal injury. Copyright © 2014 Elsevier B.V. All rights reserved. This article was published in Eur J Pharmacol and referenced in Medicinal & Aromatic Plants

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