Study on Antiviral Action of 16 Kinds of Chinese Medicinal Herbs against Porcine Reproductive and Respiratory Syndrome Virus invitro

To observe the antiviral action of 16 kinds of Chinese medicinal herbs(Houttuynia cordata Thunb,Flos Chrysanthemi,Flos Lonicerae Confusae,Anemarrhena asphodeloides,CassiaTwig,Herba Ephedrae,Radix Paeoniae Rubra,Bupleurum chinense,Dryopteris setosa,Folium Isatidis,Gardenia jasminoides Ellis,Mntha haplocalyx Briq,Paeonia suffruticosa Andr,Cornu Bubali,Herba Senecionis Scandentis,Radix Gentianae)against porcine reproductive and respiratory syndrome virus(PRRSV),the blocking,inhibiting and killing roles were detected in present study in vitro.The results showed that 13 kinds of Chinese medicinal herbs had antiviral actions against PPRSV except Paeonia suffruticosa Andr,Herba Senecionis Scandentis and Folium Isatidis,and Houttuynia cordata Thunb,Flos Chrysanthemi,Anemarrhena asphodeloides,CassiaTwigand Radix Paeoniae Rubra exhibited the best antiviral actions followed by Herba Ephedrae,Bupleurum chinense and Dryopteris setosa.