Antiviral activity of arbidol hydrochloride against herpes simplex virus I in vitro and in vivo.

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Li MK, Liu YY, Wei F, Shen MX, Zhong Y, Li S, Chen LJ, Ma N, Liu BY, Mao YD, Li N, Hou W, Xiong HR, Yang ZQ

Antiviral activity of arbidol hydrochloride against herpes simplex virus I in vitro and in vivo.

Int J Antimicrob Agents. 2018 Jan;51(1):98-106. doi: 10.1016/j.ijantimicag.2017.09.001. Epub 2017 Sep 7.

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28890393 [ View in PubMed
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Abstract

Herpes simplex virus type 1 (HSV-1) causes significant human diseases ranging from skin lesions to encephalitis, especially in neonates and immunocompromised hosts. The discovery of novel anti-HSV-1 drugs with low toxicity is required for public health. Arbidol hydrochloride (ARB) is an indole derivative molecule with broad-spectrum antiviral activity. In this study, the antiviral effects of ARB against HSV-1 infection were evaluated in vitro and in vivo. The results showed that ARB presents significant inhibitory effect on HSV-1 plaque formation and generation of progeny virus, with EC50 values (50% effective concentration) of 5.39 microg/mL (10.49 microM) and 2.26 microg/mL (4.40 microM), respectively. Moreover, time-of-addition and time-of-removal assays further suggested that ARB has viral inhibitory effects when added up to 12 h post-infection (p.i.), which could be further corroborated by determining the expression of viral immediate-early (ICP4, ICP22 and ICP27), early (ICP8 and UL42) and late (gB, gD, gH, VP1/2 and VP16) genes by real-time quantitative PCR as well as the expression of viral protein ICP4 and ICP8 at 6 h and 12 h p.i. Results of the in vivo study showed that ARB could reduce guinea pig skin lesions caused by HSV-1 infection. Conclusively, this report offers new perspectives in the search for therapeutic measures in the treatment of HSV-1 infection.

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