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Favipiravir as a potential countermeasure against neglected and emerging RNA viruses
Antiviral Research ( IF 7.6 ) Pub Date : 2018-03-07 , DOI: 10.1016/j.antiviral.2018.03.003
Leen Delang , Rana Abdelnabi , Johan Neyts

Favipiravir, also known as T-705, is an antiviral drug that has been approved in 2014 in Japan to treat pandemic influenza virus infections. The drug is converted intracellularly into its active, phosphoribosylated form, which is recognized as a substrate by the viral RNA-dependent RNA polymerase. Interestingly, besides its anti-influenza virus activity, this molecule is also able to inhibit the replication of flavi-, alpha-, filo-, bunya-, arena-, noro-, and of other RNA viruses, which include neglected and (re)emerging viruses for which no antiviral therapy is currently available. We will discuss the potential of favipiravir as a broad-spectrum countermeasure against infections caused by such neglected RNA viruses. Favipiravir has already been used off-label to treat patients infected with the Ebola virus and the Lassa virus. Because of the particular set-up of the clinical trials during these outbreaks, clear conclusions on the efficacy of favipiravir could not be made. For several viruses, it was demonstrated that the barrier of resistance development against favipiravir is high. Favipiravir has been shown to be well tolerated in healthy volunteers and in influenza virus-infected patients; however, caution is needed because of the teratogenic risks of this molecule. Because of its antiviral activity against different RNA viruses and its high barrier for resistance, the potential of favipiravir as a broad-spectrum antiviral seems promising, but safety and potency issues should be overcome before this drug or similar molecules could be used to treat large patient groups.



中文翻译:

Favipiravir作为针对被忽视和新兴的RNA病毒的潜在对策

Favipiravir,也称为T-705,是一种抗病毒药物,已于2014年在日本获准用于治疗大流行性流感病毒感染。该药物在细胞内转化为其活性的磷酸核糖基化形式,被病毒依赖RNA的RNA聚合酶识别为底物。有趣的是,该分子除了具有抗流感病毒的活性外,还能够抑制黄病毒,α病毒,氟病毒,布尼亚病毒,芳烃病毒,诺罗病毒和其他RNA病毒的复制,其中包括被忽略的和(re )目前尚无抗病毒治疗方法的新出现的病毒。我们将讨论favipiravir作为针对这种被忽视的RNA病毒引起的感染的广谱对策的潜力。Favipiravir已被标签外用于治疗感染了埃博拉病毒和Lassa病毒的患者。由于在这些暴发期间进行了特殊的临床试验,因此无法就Favipiravir的疗效得出明确的结论。对于几种病毒,已证明对favipiravir的耐​​药性发展的障碍很高。已证明在健康志愿者和感染流感病毒的患者中,法维拉韦耐受性良好。但是,由于该分子有致畸风险,因此需要谨慎。由于其对不同RNA病毒的抗病毒活性以及较高的抗药性,因此favipiravir作为广谱抗病毒药的潜力似乎是有希望的,但在使用该药物或类似分子治疗大型患者之前,应克服安全性和效力问题组。尚不能得出有关法维拉韦疗效的明确结论。对于几种病毒,已证明对favipiravir的耐​​药性发展的障碍很高。已证明在健康志愿者和感染流感病毒的患者中,法维拉韦耐受性良好。但是,由于该分子有致畸风险,因此需要谨慎。由于其对不同RNA病毒的抗病毒活性以及较高的抗药性,因此favipiravir作为广谱抗病毒药的潜力似乎是有希望的,但在使用该药物或类似分子治疗大型患者之前,应克服安全性和效力问题组。尚不能得出有关法维拉韦疗效的明确结论。对于几种病毒,已证明对favipiravir的耐​​药性发展的障碍很高。已证明在健康志愿者和感染流感病毒的患者中,法维拉韦耐受性良好。但是,由于该分子有致畸风险,因此需要谨慎。由于favipiravir具有针对不同RNA病毒的抗病毒活性和较高的抗药性,因此它作为广谱抗病毒药的潜力似乎是有希望的,但是在使用该药物或类似分子治疗大型患者之前,应克服安全性和效力问题组。已证明在健康志愿者和感染流感病毒的患者中,法维拉韦耐受性良好。但是,由于该分子有致畸风险,因此需要谨慎。由于favipiravir具有针对不同RNA病毒的抗病毒活性和较高的抗药性,因此它作为广谱抗病毒药的潜力似乎是有希望的,但是在使用该药物或类似分子治疗大型患者之前,应克服安全性和效力问题组。已证明在健康志愿者和感染流感病毒的患者中,法维拉韦耐受性良好。但是,由于该分子有致畸风险,因此需要谨慎。由于其对不同RNA病毒的抗病毒活性以及较高的抗药性,因此favipiravir作为广谱抗病毒药的潜力似乎是有希望的,但在使用该药物或类似分子治疗大型患者之前,应克服安全性和效力问题组。

更新日期:2018-03-07
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