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2016 ; 6
(ä): 28734
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New insights into salvianolic acid A action: Regulation of the TXNIP/NLRP3 and
TXNIP/ChREBP pathways ameliorates HFD-induced NAFLD in rats
#MMPMID27345365
Ding C
; Zhao Y
; Shi X
; Zhang N
; Zu G
; Li Z
; Zhou J
; Gao D
; Lv L
; Tian X
; Yao J
Sci Rep
2016[Jun]; 6
(ä): 28734
PMID27345365
show ga
Salvianolic acid A (SalA), one of the most efficacious polyphenol compounds
extracted from Radix Salvia miltiorrhiza (Danshen), has been shown to possess
many potential pharmacological activities. This study aimed to investigate
whether SalA has hepatoprotective effects against high-fat diet (HFD)-induced
non-alcoholic fatty liver disease (NAFLD) and to further explore the mechanism
underlying this process. SalA treatment significantly attenuated HFD-induced
obesity and liver injury, and markedly decreased lipid accumulation in HFD-fed
rat livers. Moreover, SalA treatment ameliorated HFD-induced hepatic inflammation
and oxidative stress by decreasing hepatotoxic levels of cytokines, suppressing
the overproduction of reactive oxygen species (ROS) and methane dicarboxylic
aldehyde (MDA) and preventing the decreased expression of superoxide dismutase
(SOD). Importantly, SalA reversed the HFD- or palmitic acid (PA)-induced
activation of the NLRP3 inflammasome, the nuclear translocation of ChREBP and the
up-regulation of FAS, and these effects were accompanied by TXNIP
down-regulation. However, TXNIP siRNA treatment partially abrogated the
above-mentioned effects of SalA in PA-treated HepG2 cells. Together, our results
demonstrated, for the first time, that SalA protects against HFD-induced NAFLD by
ameliorating hepatic lipid accumulation and inflammation, and these protective
effects may partially due to regulation of the TXNIP/NLRP3 and TXNIP/ChREBP
pathways.
|*Liver/metabolism/pathology
[MESH]
|*Non-alcoholic Fatty Liver Disease/chemically
induced/metabolism/pathology/prevention & control
[MESH]