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Berberine Attenuates Hyperuricemia by Regulating Urate Transporters and Gut Microbiota.

Hyperuricemia (HUA) and its associated metabolic diseases seriously threaten human health, and commensal microbiota has been identified as one of the environmental triggers of HUA. The role of berberine (BBR) in the treatment of HUA has begun to receive attention in recent years. However, how BBR modulates the microbiota to slow HUA progression is unclear. In this study, we showed that BBR alleviated potassium oxonate (PO)-induced HUA in mice by suppressing the expression of xanthine oxidase (XOD) in the liver and urate transporter 1 (URAT1) and glucose transporter 9 (GLUT9) in the kidney. The BBR also improved renal inflammation by inhibiting the expression of TNF-[Formula: see text], IL-1[Formula: see text], and caspase-1. Subsequently, we evaluated whether the observed anti-HUA effects of BBR were associated with changes in gut microbial structure in mice. 16S rRNA sequencing data showed that BBR significantly altered the community compositional structure of the gut microbiota. Specifically, BBR enriched the abundance of Coprococcus, Bacteroides, Akkermansia, and Prevotella. Antibiotic treatment can reverse the anti-HUA effects of BBR that further supports the role of the gut microbiota. In conclusion, our study provides evidence that BBR ameliorates PO-induced HUA by modulating the gut microbiota.