RESUMO
Nonalcoholic fatty liver disease (NAFLD) is a hepatic metabolic syndrome with a rapidly increasing prevalence globally. Plantamajoside (PMS), a phenylethanoid glycoside component extracted from Plantago asiatica, has various biological properties. However, its effect on NAFLD remains unknown. The study aimed to explore the effect and mechanism of PMS on NAFLD in the high-fat diet (HFD)-feeding rats. PMS induced a decrease in body and liver weight, and the amelioration in the blood lipid parameters and pathological symptoms in HFD-feeding rats. The increase in the serum concentrations and the relative protein expressions of proinflammatory factors was decreased by the PMS treatment in HFD-induced NAFLD rats. Additionally, PMS reduced the excessive lipid vacuoles, and modified the relative expressions of proteins involved in the fatty acid synthesis and uptake in HFD-feeding rats. Mechanically, the downregulation of AMPK/Nrf2 pathway in HFD-feeding rats was restored by the PMS treatment. Inhibition of AMPK pathway reversed the PMS-induced the increase in the level of inflammatory factors, pathological symptoms, excessive lipid vacuoles, and the relative expression of proteins involved in the fatty acid synthesis and uptake. Collectively, PMS ameliorated immune dysregulation and abnormal hepatic lipid metabolism by activating AMPK/Nrf2 pathway in rats with NAFLD.
Assuntos
Hepatopatia Gordurosa não Alcoólica , Animais , Ratos , Proteínas Quinases Ativadas por AMP/genética , Proteínas Quinases Ativadas por AMP/metabolismo , Ácidos Graxos/metabolismo , Metabolismo dos Lipídeos , Lipídeos/sangue , Fígado/metabolismo , Fator 2 Relacionado a NF-E2/genética , Fator 2 Relacionado a NF-E2/metabolismo , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Hepatopatia Gordurosa não Alcoólica/metabolismoRESUMO
Two new sesquiterpenes, innatifolone A (1) and pinnatifolone B (2), along with 6 known compounds, furostan (3), isocalamendiol (4), pluviatolide (5), (8S,8'R,9S)-cubebin (6), 2-(4-hydroxy-3-methoxybenzyl)-3-(3,4-dimethoxybenzyl) tetrahydrofuran (7), and methyl 3-acetoxy-12-oleanen-28-oate (8), were isolated from Mongolian herb Syringa pinnatifolia.
Assuntos
Medicamentos de Ervas Chinesas/química , Plantas Medicinais/química , Syringa/química , Medicamentos de Ervas Chinesas/isolamento & purificação , Espectrometria de Massas , Estrutura Molecular , MongóliaRESUMO
OBJECTIVE: To study the chemical constituents from Laggera pterodonta. METHODS: The compounds were isolated and purified by column chromatographic methods with silica gel, Sephadex LH-20, ODS and preparation HPLC. Their structures were identified by physicochemical properties and spectral data. RESULTS: Ten compounds were isolated and elucidated as 3,4',5-trihydroxy-6,7-dimethoxyflavone (1), 3, 3', 5-trihydroxy-4', 6,7-trimethoxyflavone (2), chrysosplenetin B (3), 5-hydroxy-4', 7-dimethoxyflavanone (4), 5, 7,4'-trihydroxy-3, 3'-dimethoxyflavone (5), artemitin (6), quercetin (7), pinostrobin (8), luteolin (9) and apigenin (10), respectively. CONCLUSION: Compounds 1, 2, 4, 5 and 8 - 10 are isolated from this plant for the first time.