Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Inhibition of Influenza Virus Sialidase and Anti-influenza Virus Activity by Plant Flavonoids
Takayuki NAGAIYukinori MIYAICHITsuyoshi TOMIMORIYujiro SUZUKIHaruki YAMADA
Author information
JOURNALS FREE ACCESS

1990 Volume 38 Issue 5 Pages 1329-1332

Details
Abstract

Flavonoids (103 species) were tested for inhibitory activity against influenza virus sialidase using sodium p-nitrophenyl-N-acetyl-α-D-neuraminate as substrate. 5, 7, 4'-Trihydroxy-8-methoxyflavone from the root of Scutellaria baicalensis showed the most potent activity (IC50, 55μM), and this flavone appeared to be a non-competitive inhibitor of the enzyme, Whereas, negligible or weak inhibitory activities were observed for mouse liver sialidase, β-galactosidase and α-mannosidase as tested. This flavone also inhibited the infection by influenza virus A/PR/8/34 of Madin-Darby canine kidney cells, and replication of the virus in the allantoic sack of embryonated egg. These results suggest that flavone, which has potent influenza virus sialidase inhibitory activity, may have anti-influenza virus activity.

Information related to the author
© The Pharmaceutical Society of Japan
Previous article Next article
feedback
Top