Abstract
This study was performed to investigate the effects of persimmon (Diospyros kaki) on high-fat diet (HFD)-induced hepatic lipotoxicity. The compounds of persimmon water extract (PWE) were identified as gallic acid, glucogallin, 1-O-Galloyl-(2-O-acetyl)-glu, and trihydroxy-octadecadienoic acid. The PWE was ingested by C57BL/6 mice with an HFD for 8 weeks. The PWE improved glucose tolerance and suppressed weight gain by inhibiting increases in the weight of liver and adipose tissues. The results of serum biomarker analysis showed that PWE suppressed biomarkers such as liver injury and dyslipidemia. In ex vivo tests, reduction of oxidative stress and improvement of mitochondrial dysfunction were confirmed in the liver of PWE groups. In a molecular study, it was confirmed that PWE decreased lipid accumulation, insulin resistance, inflammation, and apoptosis in the liver. Finally, in a metabolite analysis of liver tissue using ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS), it was confirmed that PWE has an effect on lipid metabolism. In particular, PWE reduced phosphatidylcholines (PCs) and lysophosphatidylcholines (lysoPCs). Notably, it is presumed that the reduction of lysoPCs and PCs in the PWE group is related to the improvement of liver dysfunction due to lipotoxicity.
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