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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Pharmacol
2017 ; 8
(ä): 120
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Protective Effects of Dioscin against Lipopolysaccharide-Induced Acute Lung
Injury through Inhibition of Oxidative Stress and Inflammation
#MMPMID28377715
Yao H
; Sun Y
; Song S
; Qi Y
; Tao X
; Xu L
; Yin L
; Han X
; Xu Y
; Li H
; Sun H
; Peng J
Front Pharmacol
2017[]; 8
(ä): 120
PMID28377715
show ga
The protective effects of dioscin, a natural steroidal saponin from some
medicinal plants including Dioscorea nipponica Makino, against lipopolysaccharide
(LPS)- induced acute liver and renal damages have been reported in our previous
works. However, the actions of dioscin against LPS-induced acute lung injury
(ALI) is still unknown. In the present study, we investigated the effects and
mechanisms of dioscin against LPS-induced ALI in vitro and in vivo. The results
showed that dioscin obviously inhibited cell proliferation and markedly decreased
reactive oxidative species level in 16HBE cells treated by LPS. In addition,
dioscin significantly protected LPS-induced histological changes, inhibited the
infiltration of inflammatory cells, as well as decreased the levels of MDA, SOD,
NO and iNOS in mice and rats (p < 0.05). Mechanistically, dioscin significantly
decreased the protein levels of TLR4, MyD88, TRAF6, TKB1, TRAF3, phosphorylation
levels of PI3K, Akt, I?B?, NF-?B, and the mRNA levels of IL-1?, IL-6, and TNF-?
against oxidative stress and inflammation (p < 0.05). Dioscin significantly
reduced the overexpression of TLR4, and obviously down-regulated the levels of
MyD88, TRAF6, TKB1, TRAF3, p-PI3K, p-Akt, p-I?B?, and p-NF-?B. These findings
provide new perspectives for the study of ALI. Dioscin has protective effects on
LPS-induced ALI via adjusting TLR4/MyD88- mediated oxidative stress and
inflammation, which should be a potent drug in the treatment of ALI.