Abstract:
:Using a plaque reduction assay, treatment of human influenza A viruses with the fruit-juice concentrate of Japanese plum (Prunus mume SIEB. et ZUCC) showed strong in vitro anti-influenza activity against human influenza A viruses before viral adsorption, but not after viral adsorption, with 50% inhibitory concentration (IC50) values against A/PR/8/34 (H1N1) virus, A/Aichi/2/68 (H3N2) virus and A/Memphis/1/71 (H3N2) virus of 6.35+/-0.17, 2.84+/-1.98 and 0.53+/-0.10 microg/ml, respectively. The plum-juice concentrate exhibited hemagglutination activity toward guinea pig erythrocytes. Its hemagglutination activity was inhibited by the monosaccharide N-acetylneuraminic acid and a sialoglycoprotein (fetuin), but not by the other tested monosaccharides (mannose, galactose, glucose and N-acetylglucosamine), suggesting the presence of a lectin-like molecule(s) in the Japanese plum-juice concentrate. Our findings suggest that the fruit-juice concentrate of Japanese plum may prevent and reduce infection with human influenza A virus, possibly via inhibition of viral hemagglutinin attachment to host cell surfaces by its lectin-like activity.
journal_name
Biol Pharm Bulljournal_title
Biological & pharmaceutical bulletinauthors
Yingsakmongkon S,Miyamoto D,Sriwilaijaroen N,Fujita K,Matsumoto K,Jampangern W,Hiramatsu H,Guo CT,Sawada T,Takahashi T,Hidari K,Suzuki T,Ito M,Ito Y,Suzuki Ydoi
10.1248/bpb.31.511subject
Has Abstractpub_date
2008-03-01 00:00:00pages
511-5issue
3eissn
0918-6158issn
1347-5215pii
JST.JSTAGE/bpb/31.511journal_volume
31pub_type
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