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Article Publish Status: FREE
Abstract Title:

Astragaloside IV Improves High-Fat Diet-Induced Hepatic Steatosis in Nonalcoholic Fatty Liver Disease Rats by Regulating Inflammatory Factors Level via TLR4/NF-κB Signaling Pathway.

Abstract Source:

Front Pharmacol. 2020 ;11:605064. Epub 2021 Jan 29. PMID: 33708118

Abstract Author(s):

Ying-Li Liu, Qiu-Zan Zhang, Yan-Rong Wang, Li-Na Fu, Jing-Shu Han, Jing Zhang, Bang-Mao Wang

Article Affiliation:

Ying-Li Liu

Abstract:

: Astragaloside IV (AS-IV) is the primary bioactive component purified fromwhich is one of the traditional Chinese medicines. Research studies found that AS-IV has significant pharmacological effects on focal cerebral ischemia/reperfusion, cardiovascular disease, pulmonary disease, liver cirrhosis, and diabetic nephropathy, but little is known about the effects of AS-IV on nonalcoholic fatty liver disease (NAFLD). In this study, we investigated whether AS-IV has beneficial effects on NAFLD in rats and its potential mechanisms.: Male SD rats were fed with high-fat diet (HFD) for 12 weeks to establish NAFLD rat model, and then, the rats were divided into five groups. The control group rats were fed with normal diet for 12 weeks and then were given normal saline (1.0 ml kgday) by intragastric administration for 4 weeks. The model group rats were fed with HFD for 12 weeks and then were given normal saline (1.0 ml kgday) by intragastric administration for 4 weeks. The AS-IV-L, AS-IV-M, and AS-IV-H groups were treated with 20, 40, and 80 mg kgdayof AS-IV by intragastric administration for 4 weeks and given HFD diet. Then, we detected serum transaminase (ALT, AST), blood lipid (TG, TC), inflammatory cytokines (IL-6, IL-8 and TNF-α), liver histology(NAFLD activity score), TLR4/MyD88 signaling pathway in liver tissue.: We found AS-IV significantly reduced serum levels of AST, ALT, TG, TNF-α, IL-6, and IL-8 in NAFLD rats and downregulate the expression of TLR4 mRNA, MyD88 mRNA, NF-κB mRNA, and proteins in liver tissue. Moreover, AS-IV could significantly reduce the NAFLD activity score of NAFLD rat liver.: In this study, we demonstrated that AS-IV have a protective effect on NAFLD by inhibiting TNF-α, IL-6 and IL-8 levels and down-regulating TLR4, MyD88 and NF-κB expression in rat liver tissues.

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