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Inhibitory effects of flavonoids on several venom hyaluronidases
Authors:U. R. Kuppusamy  N. P. Das
Affiliation:1. Laboratory of Flavonoid Research, Department of Biochemistry, Faculty of Medicine, National University of Singapore, Kent Ridge Crescent, 0511, Singapore
Abstract:In vitro studies showed that the flavonoid aglycones apigenin, luteolin and kaempferol inhibited the hyaluronidase activity of five different venoms dose-dependently. They were also able to delay the venom action when injected into mice. Naringenin, catechin and flavonoid glycosides had no effect. The flavonoids with unsubstituted hydroxyl groups at C-positions 5, 7 and 4′, a double bond between carbons 2 and 3, as well as a ketone group at position 4, exhibited potent inhibitory actions on the venom hyaluronidases.
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