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  • Title: Effect of green tea on hepatic lipid metabolism in mice fed a high-fat diet.
    Author: Nam M, Choi MS, Choi JY, Kim N, Kim MS, Jung S, Kim J, Ryu DH, Hwang GS.
    Journal: J Nutr Biochem; 2018 Jan; 51():1-7. PubMed ID: 29078075.
    Abstract:
    Green tea (GT) is a widely consumed beverage with health benefits, including antiobesity effects; however, the efficacy of GT on lipid levels associated with obesity is not clearly understood. Here, we examined the impact of GT consumption on lipid metabolism in the livers of high-fat diet (HFD)-induced obese mice. We performed lipid profiling using ultraperformance liquid chromatography quadrupole time-of-flight mass spectrometry in C57BL/6J mice fed a normal diet (ND), HFD and HFD with GT for 12 weeks. The partial least squares discriminant analysis score plot showed a difference among the groups and revealed that the levels of several lipid metabolites were altered in mice fed HFD with GT. The decreased levels of lysophospholipids (LPLs), such as lysophosphatidylcholine, lysophosphatidylethanolamine and lysophosphatidylserine, in HFD mice compared to those of the ND group were recovered by supplementation of GT. In agreement with these lipid metabolites changes, hepatic lysophosphatidylcholine acyltransferase 2/4 was significantly increased in HFD mice. This study showed abnormal changes in lipid species associated with obesity, and these levels were attenuated by GT intake, suggesting a relationship between the reduction of hepatic LPL levels and inflammation in obesity.
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