title: Antiviral activity and constituent of Ardisia chinensis benth against coxsackie B3 virus.
abstract: Ardisia chinensis Benth is a medicinal plant traditionally used in the area of Yao minority in Southern China. The in vitro antiviral activities of extracts and fractions from Ardisia chinensis were tested by the cytopathic effect (CPE) reduction assay in the present study. As a result, both the aqueous extract and the 95% ethanol extract of Ardisia chinensis showed in vitro antiviral activity against Coxsackie B3 (Cox B3) virus to different extents, and the aqueous extract possessed more potent activity than the ethanol extract. Bioassay-guided fractionation revealed that the antiviral activity of Ardisia chinensis was attributed mainly to its high polar fractions, and finally identified to be a polysaccharide. The Ardisia chinensis polysaccharide (ACP) fractionated from the aqueous extract exhibited a significant antiviral effect against Cox B3 with a 50% inhibitory concentration (IC(50)) of 3.9 microg/mL and a selective index (SI) over 256. Preliminary characterization indicated that ACP is a neutral polysaccharide in which d-glucose is the major component. The average molecular weights of ACP were determined to be 40037 Da (Mw), 28297 Da (Mn) and 33758 Da (Mp) by gel permeation chromatography.
authors.affiliation: Department of Chemistry, Jinan University, Guangdong, Guangzhou, P. R. China.
authors.forename: Miaoxian
authors.initials: M
authors.lastname: Su
authors.forename: Yaolan
authors.initials: Y
authors.lastname: Li
authors.forename: Kam Tong
authors.initials: KT
authors.lastname: Leung
authors.forename: Yingzhou
authors.initials: Y
authors.lastname: Cen
authors.forename: Ting
authors.initials: T
authors.lastname: Li
authors.forename: Runzhi
authors.initials: R
authors.lastname: Chen
authors.forename: Vincent E C
authors.initials: VE
authors.lastname: Ooi
mesh_terms: D000998:Antiviral Agents / Q000302:isolation & purification / Q000494:pharmacology* / Q000627:therapeutic use; D031644:Ardisia; D002470:Cell Survival / Q000187:drug effects; D002681:China; D003384:Coxsackievirus Infections / Q000188:drug therapy; D003588:Cytopathogenic Effect, Viral / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification / Q000494:pharmacology* / Q000627:therapeutic use; D029822:Enterovirus B, Human / Q000187:drug effects*; D006367:HeLa Cells; D006801:Humans; D020128:Inhibitory Concentration 50; D008970:Molecular Weight; D008517:Phytotherapy; D011134:Polysaccharides / Q000032:analysis / Q000494:pharmacology*
chemical_list: D000998:Antiviral Agents; D004365:Drugs, Chinese Herbal; D011134:Polysaccharides