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- W2912186741 abstract "Objective Urolithin A (UroA) is a major metabolite of ellagic acid produced following microbial catabolism in the gut. Emerging evidence has suggested that UroA modulates energy metabolism in various cells. However, UroA’s physiological functions related to obesity and insulin resistance remain unclear. Methods Male mice were intraperitoneally administrated either UroA or dimethyl sulfoxide (vehicle) along with a high‐fat diet for 12 weeks. Insulin sensitivity was evaluated via glucose and insulin tolerance tests and acute insulin signaling. The effects of UroA on hepatic triglyceride accumulation, adipocyte size, mitochondrial DNA content, and proinflammatory gene expressions were determined. The impact of UroA on macrophage polarization and mitochondrial respiration were assessed in bone marrow–derived macrophages. Results Administration of UroA (1) improved systemic insulin sensitivity, (2) attenuated triglyceride accumulation and elevated mitochondrial biogenesis in the liver, (3) reduced adipocyte hypertrophy and macrophage infiltration into the adipose tissue, and (4) altered M1/M2 polarization in peritoneal macrophages. In addition, UroA favored macrophage M2 polarization and mitochondrial respiration in bone marrow‐derived macrophages. Conclusions UroA plays a direct role in improving systemic insulin sensitivity independent of its parental compounds. This work supports UroA’s role in the metabolic benefits of ellagic acid–rich foods and highlights the significance of its microbial transformation in the gut." @default.
- W2912186741 created "2019-02-21" @default.
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- W2912186741 date "2019-02-15" @default.
- W2912186741 modified "2023-10-17" @default.
- W2912186741 title "Urolithin A, a Gut Metabolite, Improves Insulin Sensitivity Through Augmentation of Mitochondrial Function and Biogenesis" @default.
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- W2912186741 doi "https://doi.org/10.1002/oby.22404" @default.
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