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Sheng-Mai Yin exerts anti-inflammatory effects on RAW 264.7 cells and zebrafish.

Authors :
Zheng Y
Tian C
Fan C
Xu N
Xiao J
Zhao X
Lu Z
Cao H
Liu J
Yu L
Source :
Journal of ethnopharmacology [J Ethnopharmacol] 2021 Mar 01; Vol. 267, pp. 113497. Date of Electronic Publication: 2020 Oct 19.
Publication Year :
2021

Abstract

Ethnopharmacological Relevance: Sheng-Mai Yin (SMY), a famous traditional Chinese medicine formula, has been commonly used in China for centuries to treat various diseases, such as inflammation-related diseases. However, the anti-inflammatory activity of SMY and its potential mechanisms still have not yet been clearly understood.<br />Aim of the Study: In this study, we aimed to determine the anti-inflammatory effect of SMY and explore its underlying mechanisms both on RAW 264.7 cells and zebrafish.<br />Materials and Methods: The levels of pro-inflammatory cytokines IL-6 and TNF-α secreted by RAW 264.7 cells were measured by ELISA. The protein expressions of IκBα, p-IκBα (Ser32), STAT3 and p-STAT3 (Tyr705) were determined by Western blotting. And the nuclear translocation of NF-κB p65 in LPS-induced RAW 264.7 macrophage cells was detected by confocal microscopy. Moreover, the in vivo anti-inflammatory effect of SMY and its potential mechanisms were further investigated by survival analysis, hematoxylin-eosin staining (H&E), observation of neutrophil migration and quantitative real-time PCR (qRT-PCR) analysis in zebrafish inflammatory models.<br />Results: SMY reduced the release of IL-6 and TNF-α, inhibited the phosphorylation of IκBα and STAT3 as well as the nuclear translocation of NF-κB p65 in LPS-induced RAW 264.7 cells. Furthermore, the increased survival, decreased infiltration of inflammatory cells and the attenuated migration of neutrophils together suggested the in vivo anti-inflammatory effects of SMY. More importantly, SMY reduced the gene expressions of pro-inflammatory cytokines and suppressed LPS-induced up-regulation of NF-κB, IκBα and STAT3 in zebrafish inflammatory models.<br />Conclusion: SMY exerts significant anti-inflammatory effects with a potential mechanism of inhibiting the NF-κB and STAT3 signal pathways. Our findings suggest a scientific rationale of SMY to treat inflammatory diseases in clinic.<br /> (Copyright © 2020. Published by Elsevier B.V.)

Details

Language :
English
ISSN :
1872-7573
Volume :
267
Database :
MEDLINE
Journal :
Journal of ethnopharmacology
Publication Type :
Academic Journal
Accession number :
33091492
Full Text :
https://doi.org/10.1016/j.jep.2020.113497