Abstract
Evidences showed that chronic stress (CS) can aggravate the situation of nonalcoholic fatty liver disease (NAFLD). Vitexin is one of the major components in hawthorn, which is widely used to reduce blood lipid. This study was aimed to explore the therapeutic effects and potential mechanisms of vitexin on chronic stress mice with high-fat diet (CSHFD). The results showed that 5-week vitexin administration (40 mg/kg, i.g.) could obviously reduce hepatic fat deposition, alleviate lipid metabolism, and inhibit liver inflammation in CSHFD mice. In addition, vitexin significantly reduced hepatic macrophage infiltration, obviously down-regulated the mRNA and protein expressions of hepatic SREBP-1c, FAS, ACC. Moreover, we also found that vitexin treatment could significantly inhibit the expressions of TLR4/NF-κB signaling in CSHFD mice. This results suggested that vitexin could ameliorate chronic stress combined with high-fat diet induced NAFLD, and its mechanisms is closely related to inhibit TLR4/NF-κB signaling and reduce fatty acid synthesis proteins.
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