Effects and mechanisms of theabrownin from black tea in improving hyperuricemia: Evidence from animal study and clinical trial.

Int J Biol Macromol

State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen University, Xiamen 361102, China.

Published: December 2024

AI Article Synopsis

  • Hyperuricemia (HUA) is a condition where excess uric acid builds up in the body, and Theabrownin (TB), a compound from black tea, may help improve this condition.
  • TB was found to lower uric acid levels and reduce kidney damage in HUA mice by inhibiting an enzyme (xanthine oxidase) and enhancing uric acid transport in the kidneys.
  • A clinical trial with HUA patients indicated that consuming TB daily for 12 weeks effectively decreased uric acid levels without negative side effects.

Article Abstract

Hyperuricemia (HUA) is a metabolic disease characterized by disorders of uric acid synthesis and excretion. Theabrownin (TB), a macromolecular water-soluble pigment from black tea, can bring beneficial effects on human health. The effects and underlying molecular mechanisms of TB on HUA animals and patients are still unclear. This study aimed to explore the potential function and the possible mechanisms of TB in improving HUA. Our results demonstrated that TB could reduce the levels of serum uric acid and improve renal pathological damage in HUA mice by inhibiting xanthine oxidase (XOD) activity in the liver and increasing the expression of uric acid transporter proteins in the kidney. Furthermore, TB was proven to suppress autophagy, inflammation, and fibrosis in the kidney of HUA mice. Moreover, a self-controlled clinical trial showed that TB drinking daily for 12 weeks could decrease serum uric acid levels in HUA patients without any adverse effects. In conclusion, TB exhibits significant potential in decreasing serum uric acid levels both in HUA mice and patients, offering a novel approach to HUA treatment.

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http://dx.doi.org/10.1016/j.ijbiomac.2024.139373DOI Listing

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