Understanding the effect of anthocyanin extracted from Lonicera caerulea L. on alcoholic hepatosteatosis - 31/07/19
, Jianpeng Guo a, ⁎ Bienvenue sur EM-consulte, la référence des professionnels de santé.
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Graphical abstract |
Highlights |
• | The anthocyanin from Lonicera caerulea L. was extracted and purified. |
• | Ethanol exposure in mouse resulted in liver lipid deposition and inflammation. |
• | The anthocyanin from Lonicera caerulea L. demonstrated hepatoprotective and anti-inflammatory activities. |
• | The anthocyanin from Lonicera caerulea L. suppressed inflammasome activation and enhanced phosphorylation of AMPK. |
Abstract |
Liver inflammation and excessive accumulation of lipids play a critical role in alcoholic liver diseases (ALD) pathogenesis. Plant polyphenols are widely used to prevent toxic liver damage. The anthocyanin from Lonicera caerulea L. was extracted and purified. The aim of the study was to evaluate the hepatoprotective mechanism of the purified component (PLE), focusing on the effects of PLE on alcoholic steatohepatitis. C57BL/6 mice were fed on chronic plus binge ethanol in Lieber-DeCarli liquid diet to establish acute ethanol model. PLE treatment significantly reduced the accumulation of serum aminotransferase and triglycerides and increased albumin levels in ethanol-induced mice. Also, PLE ameliorated histological changes and lipid droplets induced by ethanol. In addition, PLE obviously suppressed the expression of SREBP1 and enhanced phosphorylation of AMPK compared with chronic ethanol administration. PLE suppressed inflammasome activation by decreasing F4/80 level and inhibiting caspase-1, thereby preventing activated macrophages from producing pro-inflammation cytokines. AML12 cells were pretreated with different concentrations of PLE for 2 h and then exposed to ethanol for 48 h. PLE suppressed the expression of SREBP1 and enhanced phosphorylation of AMPK in AML12 cells exposed to ethanol. Additionally, PLE inhibited the expression of F4/80 and decreased IL-1β release. AMPK interference confirms that PLE downregulation SREBP1 and F4/80 depending on AMPK activation in ethanol-treated AML12 cells. PLE possessed the capacity for inhibiting the inflammatory response and suppressing lipid accumulation, indicating that PLE can be used as a dietary health supplement for alcoholic steatohepatitis.
Le texte complet de cet article est disponible en PDF.Keywords : Alcoholic hepatosteatosis, Lonicera caerulea L., Anthocyanin, AMPK, F4/80
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Vol 117
Article 109087- septembre 2019 Retour au numéro
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