Eucommia folium can be prepared into tea with the ability to prevent and treat hyperuricemia

The aim of this study was to investigate the antihyperuricaemic (HUA) effect of Eucommia folium after preparing a tea made from its leaves (abbreviated as DZ) which has the ability to prevent and treat HUA. In this study, a mouse HUA model was established via gavage of potassium oxonate and hypoxanthine, and this HUA model was treated with DZ to investigate the therapeutic effect of DZ on HUA. This study recruited 30 HUA volunteers, who drank 10 g of DZ daily for 4 consecutive weeks. The serum HUA levels of UA volunteers were measured once per week to observe the anti-HUA efficacy of DZ at the clinical level. Animal experiments have shown that DZ has therapeutic effects on HUA. DZ effectively reduces the levels of uric acid (UA), creatinine (Cr), and urea nitrogen (BUN) in the serum of HUA mice; decreases xanthine oxidase (XOD) activity in the serum; and alleviates damage to kidney tissues and glomeruli. Metabolomic analysis revealed that DZ affects multiple metabolites, such as orotidine, orotic acid, ureidosuccinic acid, 1-methylhistidine, and other metabolites, and these metabolites are involved mainly in pyrimidine metabolism, histidine metabolism, and riboflavin metabolism. Clinical research revealed that, after DZ was consumed, the UA levels in the HUA volunteers significantly decreased. DZ can prevent and treat HUA, and is in the same class of traditional Chinese medicines used in medicine and food, with extremely low toxicity and high safety. Therefore, DZ is suitable as a functional food for the prevention and treatment of HUA.