alexa In vitro anti-enterovirus 71 activity of gallic acid from Woodfordia fruticosa flowers.
Microbiology

Microbiology

Virology & Mycology

Author(s): Choi HJ, Song JH, Park KS, Baek SH

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Abstract AIMS: The anti-enterovirus 71 (EV71) activity of six Nepalese plants' extracts and gallic acid (GA) isolated from Woodfordia fruticosa Kurz (family; Lythaceae) flowers were evaluated in Vero cells. METHODS AND RESULTS: The anti-EV71 activity of tested compounds was evaluated by a cytopathic effect reduction method. Our results demonstrated that flowers' extracts of W. fruticosa exerted strong anti-EV71 activity, with a 50\% inhibitory concentration (IC(50)) of 1.2 microg ml(-1) and no cytotoxicity at a concentration of 100 microg ml(-1), and the derived therapeutic index (TI) was more than 83.33. Rivabirin showed no antiviral activity against EV71. Furthermore, GA isolated from W. fruticosa flowers exhibited a higher anti-EV71 activity than the extract of W. fruticosa flowers, with an IC(50) of 0.76 microg ml(-1) and no cytotoxicity at a concentration of 100 microg ml(-1), and the derived TI was 99.57. CONCLUSIONS: This study demonstrated that flower extracts of W. fruticosa possessed anti-EV71 activity and GA isolated from these flowers showed stronger anti-EV71 activity than that the extracts. SIGNIFICANCE AND IMPACT OF THE STUDY: Our results suggest that the GA from W. fruticosa flowers may be used as a potential antiviral agent. This article was published in Lett Appl Microbiol and referenced in Virology & Mycology

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