Xanthine oxidase inhibitory activity of isoflavonoids from Apios americana

Xanthine oxidase (XO) is a form of xanthine oxidoreductase, a type of enzyme that plays a key role in the induction of hyperuricemia and raising superoxide radical level in blood. The present study was performed to evaluate the inhibitory activity of isoflavonoids (1-3) isolated from the ethyl acetate fraction of Apios americana, on the catalytic reaction mediated by XO. The isoflavonoids exhibited potential inhibitory activity within...