Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China.
Nutrients. 2024 Apr 7;16(7):1086. doi: 10.3390/nu16071086.
Resveratrol (RES) has been reported to prevent hyperuricemia (HUA); however, its effect on intestinal uric acid metabolism remains unclear. This study evaluated the impact of RES on intestinal uric acid metabolism in mice with HUA induced by a high-fat diet (HFD). Moreover, we revealed the underlying mechanism through metagenomics, fecal microbiota transplantation (FMT), and 16S ribosomal RNA analysis. We demonstrated that RES reduced the serum uric acid, creatinine, urea nitrogen, and urinary protein levels, and improved the glomerular atrophy, unclear renal tubule structure, fibrosis, and renal inflammation. The results also showed that RES increased intestinal uric acid degradation. RES significantly changed the intestinal flora composition of HFD-fed mice by enriching the beneficial bacteria that degrade uric acid, reducing harmful bacteria that promote inflammation, and improving microbial function via the upregulation of purine metabolism. The FMT results further showed that the intestinal microbiota is essential for the effect of RES on HUA, and that may play a key role in this process. The present study demonstrated that RES alleviates HFD-induced HUA and renal injury by regulating the gut microbiota composition and the metabolism of uric acid.
白藜芦醇(RES)已被报道可预防高尿酸血症(HUA);然而,其对肠道尿酸代谢的影响尚不清楚。本研究评估了 RES 对高脂肪饮食(HFD)诱导的 HUA 小鼠肠道尿酸代谢的影响。此外,我们通过宏基因组学、粪便微生物群移植(FMT)和 16S 核糖体 RNA 分析揭示了其潜在机制。结果表明,RES 降低了血清尿酸、肌酐、尿素氮和尿蛋白水平,并改善了肾小球萎缩、肾小管结构不清、纤维化和肾脏炎症。结果还表明,RES 增加了肠道尿酸的降解。RES 通过富集降解尿酸的有益细菌、减少促进炎症的有害细菌以及通过嘌呤代谢的上调来改善微生物功能,显著改变了 HFD 喂养小鼠的肠道菌群组成。FMT 结果进一步表明,肠道微生物群对于 RES 对 HUA 的作用至关重要,并且可能在这个过程中发挥关键作用。本研究表明,RES 通过调节肠道微生物群组成和尿酸代谢来缓解 HFD 诱导的 HUA 和肾脏损伤。
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