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2017 ; 7
(1
): 12026
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Salidroside ameliorates sepsis-induced acute lung injury and mortality via
downregulating NF-?B and HMGB1 pathways through the upregulation of SIRT1
#MMPMID28931916
Lan KC
; Chao SC
; Wu HY
; Chiang CL
; Wang CC
; Liu SH
; Weng TI
Sci Rep
2017[Sep]; 7
(1
): 12026
PMID28931916
show ga
Sepsis is a life-threatening medical condition. Salidroside, a substance isolated
from Rhodiola rosea, possesses antioxidant and anti-inflammatory properties. The
effect and mechanism of salidroside on sepsis-induced acute lung injury still
remains to be well clarified. Here, we investigated the effect and mechanism of
salidroside on septic mouse models and explored the role of
salidroside-upregulated SIRT1. Salidroside inhibited the inflammatory responses
and HMGB1 productions in bacterial lipopolysaccharide (LPS)-treated macrophages
and mice. Salidroside could also reverse the decreased SIRT1 protein expression
in LPS-treated macrophages and mice. Salidroside also alleviated the
sepsis-induced lung edema, lipid peroxidation, and histopathological changes and
the mortality, and improved the lung PaO(2)/FiO(2) ratio in cecal ligation and
puncture (CLP)-induced septic mice. Salidroside significantly decreased the serum
TNF-?, IL-6, NO, and HMGB1 productions, pulmonary inducible NO synthase (iNOS)
and phosphorylated NF-?B-p65 protein expressions, and pulmonary HMGB1 nuclear
translocation in CLP septic mice. Moreover, sepsis decreased the SIRT1 protein
expression in the lungs of CLP septic mice. Salidroside significantly upregulated
the SIRT1 expression and inhibited the inflammatory responses in CLP septic mouse
lungs. These results suggest that salidroside protects against sepsis-induced
acute lung injury and mortality, which might be through the SIRT1-mediated
repression of NF-?B activation and HMGB1 nucleocytoplasmic translocation.
|Acute Lung Injury/etiology/metabolism/*prevention & control
[MESH]