Ursolic acid and its esters: occurrence in cranberries and other <i>Vaccinium</i> fruit and effects on matrix metalloproteinase activity in DU145 prostate tumor cells

Abstract

Cranberries (V. macrocarpon) were the best source of ursolic acid and its esters among the fruit and products tested. These compounds may limit prostate carcinogenesis through matrix metalloproteinase inhibition.