Agrimonolide from Agrimonia pilosa suppresses inflammatory responses through down-regulation of COX-2/iNOS and inactivation of NF-κB in lipopolysaccharide-stimulated macrophages - PubMed (original) (raw)
. 2016 Jul 15;23(8):846-55.
doi: 10.1016/j.phymed.2016.03.016. Epub 2016 Apr 22.
Affiliations
- PMID: 27288920
- DOI: 10.1016/j.phymed.2016.03.016
Agrimonolide from Agrimonia pilosa suppresses inflammatory responses through down-regulation of COX-2/iNOS and inactivation of NF-κB in lipopolysaccharide-stimulated macrophages
Lei Chen et al. Phytomedicine. 2016.
Abstract
Background: Agrimonolide from Agrimonia pilosa showed a strong anti-inflammatory activity, and the present study aims to reveal potential mechanisms on molecular level explaining its anti-inflammatory effect.
Hypothesis/purpose: To investigate the mechanism of anti-inflammatory activity of agrimonolide.
Study design: Anti-inflammatory activity of agrimonolide in cells was applied.
Methods: Anti-inflammatory activity of agrimonolide isolated from Agrimonia pilosa was evaluated using lipopolysaccharide (LPS) stimulated RAW 264.7 cell models. The productions of IL-1β, IL-6, TNF-α and NO were determined by ELISA and nitrite analysis, respectively. The expressions of iNOS and COX-2 were measured by western blotting and RT-PCR analysis.
Results: The pre-treatment with agrimonolide significantly reduced the levels of pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α), as well as attenuated the expression of iNOS and COX-2 in LPS-stimulated macrophages. Furthermore, agrimonolide inhibited the activation of JNK and p38 MAPKs and decreased the activation of JAK-STAT and NF-κB in LPS-stimulated macrophages.
Conclusion: The present study suggested that agrimonolide exerted anti- inflammatory activity, at least in part, via suppressing LPS-induced activation of JAK-STATs and p38 MAPKs signaling pathway.
Keywords: Agrimonolide; Anti-inflammation; Macrophages; Mechanism.
Copyright © 2016 Elsevier GmbH. All rights reserved.
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