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Chinese Pharmacological Bulletin ; (12): 898-903, 2022.
Article in Chinese | WPRIM | ID: wpr-1014089

ABSTRACT

Aim To discuss the effect of miR-199/ SIRT1/MFN2 signaling pathway on the progression of NASH and its related mechanisms.Methods 45 BALB/e mice were randomly divided into normal group, high fat diet(HFD) group, total saponins of panax japonicas ( TSPJ ) low-dose group ( 15 mg • kg-1) and TSPJ high-dose group (45 mg • kg"1 ).Normal group was given normal diet, while HFD group, TSPJ low-dose and high-dose groups were given high-fat diet.The mice were intragastrioally given 15 and 45 mg 'kg"1 TSPJ (dissolved in saline) daily in TSPJ low-dose and high-dose groups, while those in other groups were intragastric ally given the same a- mount of saline daily.After seven months, they were sacrificed for serum collection and hepatic tissue col¬lection.Results HE staining showed that liver lipido¬sis and inflammation were obvious in HFD group.while liver lipidosis anrl inflammation were alleviated in TSPJ group.MFN2 and SIRT1 levels significantly de¬creased.TNF-a, 1L-1 p , SREBP, ChREBP levels sig¬nificantly increased in HFD group.After treated with TSPJ, SIRT1 and MFN2 levels were significantly up- regulated , while TNF-a, IL-ip, ChREBP and SREBP levels were significantly down-regulated.The Immuno¬fluorescence results showed that the fluorescence inten¬sity of MFN2 and SIR 11 increased in TSPJ low-dose and high-dose groups.At mRNA level, miR-199 had a negative regulatory relationship with SIRT1.Conclu¬sions TSPJ can alleviate NASH induced by high fat diet through miR-199/SIRTl/MFN2 signaling path¬way.

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