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Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice
Joint Authors
Wu, Hongtan
Zhang, Gang
Pang, Haiyue
Chen, Yupei
Wang, Gueyhorng
Huang, Lisen
Liu, Huaxin
Zheng, Yongbiao
Sun, Cuiling
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-08-07
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
A polyphenol-enriched fraction (PEF) from Acalypha wilkesiana, whose leaves have been traditionally utilized for the treatment of diverse medical ailments, was investigated for the anti-inflammatory effect and molecular mechanisms by using lipopolysaccharide- (LPS-) stimulated RAW 264.7 macrophages and acetaminophen- (APAP-) induced liver injury mouse model.
Results showed that PEF significantly attenuated LPS-induced nitric oxide (NO) and prostaglandin E2 (PGE2) production and suppressed the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) in RAW 264.7 macrophages.
PEF also reduced the secretion of proinflammatory cytokines including tumor necrosis factor-α (TNF-α), interleukin- (IL-) 1β, and IL-6 in LPS-stimulated RAW 264.7 macrophages.
Moreover, PEF potently inhibited LPS-induced phosphorylation of mitogen-activated protein kinases (MAPKs) as well as the activation of nuclear factor-κB (NF-κB) by preventing the degradation of inhibitor κB-α (IκB-α).
In vivo, PEF pretreatment ameliorated APAP-induced liver injury and hepatic inflammation, as presented by decreased hepatic damage indicators and proinflammatory factors at both plasma and gene levels.
Additionally, PEF pretreatment remarkably diminished Toll-like receptor 3 (TLR3) and TLR4 expression and the subsequent MAPKs and NF-κB activation.
HPLC analysis revealed that two predominantly polyphenolic compounds present in PEF were geraniin and corilagin.
These results indicated that PEF has an anti-inflammatory effect, and its molecular mechanisms may be involved in the inactivation of the TLR/MAPK/NF-κB signaling pathway, suggesting the therapeutic potential of PEF for inflammatory diseases.
American Psychological Association (APA)
Wu, Hongtan& Pang, Haiyue& Chen, Yupei& Huang, Lisen& Liu, Huaxin& Zheng, Yongbiao…[et al.]. 2018. Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice. Oxidative Medicine and Cellular Longevity،Vol. 2018, no. 2018, pp.1-17.
https://search.emarefa.net/detail/BIM-1212104
Modern Language Association (MLA)
Wu, Hongtan…[et al.]. Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice. Oxidative Medicine and Cellular Longevity No. 2018 (2018), pp.1-17.
https://search.emarefa.net/detail/BIM-1212104
American Medical Association (AMA)
Wu, Hongtan& Pang, Haiyue& Chen, Yupei& Huang, Lisen& Liu, Huaxin& Zheng, Yongbiao…[et al.]. Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice. Oxidative Medicine and Cellular Longevity. 2018. Vol. 2018, no. 2018, pp.1-17.
https://search.emarefa.net/detail/BIM-1212104
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212104