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Volume 168, Issue 8

The inhibitory effect of paeoniflorin on reactive oxygen species alleviates the activation of NF-κB and MAPK signalling pathways in macrophages Free

Abstract

Paeoniflorin (PF) has been proven to possess a protective effect in some inflammatory diseases, but the underlying mechanism remains unclear. Macrophages play central roles in inflammatory responses and LPS-stimulated RAW264.7 macrophage is an ideal model for studying the anti-inflammatory effects and mechanisms of drugs. Thus, it was used to explore the anti-inflammatory mechanism of PF in this study. The results showed that PF markedly attenuated the activation of NF-κB, extracellular signal-regulated kinase (ERK1/2) and p38 mitogen activated protein kinase (p38) signalling pathways induced by LPS exposure. In addition, PF pretreatment dose-dependently suppressed the production of cytokines and the expressions of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS). Concomitantly, PF pretreatment dramatically inhibited the accumulation of intracellular reactive oxygen species (ROS) without affecting the phagocytosis of macrophages. Furthermore, it has proved the scavenging effect of PF on ROS was involved in the anti-inflammatory process. This study provides a novel aspect to the understanding of the anti-inflammatory mechanism of PF.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): inflammation , macrophages , MAPK , NF-κB , paeoniflorin and ROS
© 2022 The Authors
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2022-08-03
2024-04-16
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The inhibitory effect of paeoniflorin on reactive oxygen species alleviates the activation of NF-κB and MAPK signalling pathways in macrophages
Microbiology 168, 001210 (2022); https://doi.org/10.1099/mic.0.001210
/content/journal/micro/10.1099/mic.0.001210
/content/journal/micro/10.1099/mic.0.001210
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