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Sweroside ameliorates α-naphthylisothiocyanate induced cholestatic liver injury through bile acid regulation and further pro-inflammatory responses mediation
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摘要
Aim:Sweroside,an iridoid glycoside,exerts diverse biological activities.The study aimed to investigate how sweroside attenuates the a-naphthylisothiocyanate(ANIT)-induced cholestatic liver injury in mice.Methods:C57BL mice were treated with sweroside(120 mg/kg,ig) or INT-747(12 mg/kg,ig) for five consecutive days(once daily),respectively.On the 3rd day,4h after sweroside or INT-747 treatment,mice were orally administered a single dose of ANIT in olive oil(75 mg/kg,ig).Serum biochemical markers,histological change,and hepatic bile acids were analyzed.Hepatic pro-inflammatory mediators and bile acid metabolism-related genes were also analyzed.In addition,to explore the role of bile acids in the progress of ANIT-induced liver injury,primary hepatocytes were treated with bile acid milieu,which were composed of the most elevated hepatic individual bile acids after ANIT exposure in vivo study.Results:Sweroside effectively ameliorated ANIT-induced cholestatic liver injury in mice,as evidenced by reduction of serum biochemical markers and attenuation of pathological changes.Furthermore,sweroside dramatically decreased the elevation of hepatic individual bile acids caused by ANIT treatment,such as the P-MCA,CA,and TCA levels.The underlying insights were possibly related to the regulation of mRNA expression of bile acid synthesis,bile acid transports,and pro-inflammatory responses.In addition,overload hepatic bile acids after ANIT exposure may act as an inducer of pro-inflammatory responses.Conclusions:Sweroside effectively attenuated the ANIT-induced cholestatic liver injury in mice by regulating bile acids and restoring their normal levels,as well as repressing pro-inflammatory responses.
Aim:Sweroside,an iridoid glycoside,exerts diverse biological activities.The study aimed to investigate how sweroside attenuates the a-naphthylisothiocyanate(ANIT)-induced cholestatic liver injury in mice.Methods:C57BL mice were treated with sweroside(120 mg/kg,ig) or INT-747(12 mg/kg,ig) for five consecutive days(once daily),respectively.On the 3rd day,4h after sweroside or INT-747 treatment,mice were orally administered a single dose of ANIT in olive oil(75 mg/kg,ig).Serum biochemical markers,histological change,and hepatic bile acids were analyzed.Hepatic pro-inflammatory mediators and bile acid metabolism-related genes were also analyzed.In addition,to explore the role of bile acids in the progress of ANIT-induced liver injury,primary hepatocytes were treated with bile acid milieu,which were composed of the most elevated hepatic individual bile acids after ANIT exposure in vivo study.Results:Sweroside effectively ameliorated ANIT-induced cholestatic liver injury in mice,as evidenced by reduction of serum biochemical markers and attenuation of pathological changes.Furthermore,sweroside dramatically decreased the elevation of hepatic individual bile acids caused by ANIT treatment,such as the P-MCA,CA,and TCA levels.The underlying insights were possibly related to the regulation of mRNA expression of bile acid synthesis,bile acid transports,and pro-inflammatory responses.In addition,overload hepatic bile acids after ANIT exposure may act as an inducer of pro-inflammatory responses.Conclusions:Sweroside effectively attenuated the ANIT-induced cholestatic liver injury in mice by regulating bile acids and restoring their normal levels,as well as repressing pro-inflammatory responses.
引文
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