Nat Commun:抗药性H7N9流感病毒有高度传播性

2014-01-14 Nature中文网 Nature中文网

新出现的H7N9流感病毒的一个突变能使其对惟一一类对该病毒有活性的药物产生抵抗力,而不会影响其在动物中传播的能力。发表在本期Nature Communications上一篇研究论文中的这一发现表明,与季节性流感不同的是,抗药性H7N9病毒能够与非抗药性H7N9病毒同样高效地在动物中复制。 Nicole Bouvier及同事对从中国一位患者身上分离出的突变的H7N9病毒进行了分析,以了解它对药物的

新出现的H7N9流感病毒的一个突变能使其对惟一一类对该病毒有活性的药物产生抵抗力,而不会影响其在动物中传播的能力。发表在本期Nature Communications上一篇研究论文中的这一发现表明,与季节性流感不同的是,抗药性H7N9病毒能够与非抗药性H7N9病毒同样高效地在动物中复制。【原文下载】

Nicole Bouvier及同事对从中国一位患者身上分离出的突变的H7N9病毒进行了分析,以了解它对药物的抵抗力和它的感染力。他们发现,该病毒对抗病毒药物Oseltamivir(亦称为Tamiflu)有很强抵抗力。另外,它也能与未突变的H7N9病毒同样高效地感染培养的人细胞和在实验动物之间传播。这是不同寻常的,因为我们知道,当季节性流感病毒产生抗药性时,这对病毒本身来说通常是有代价的,代价就是其在宿主之间传播和在它们体内生长的能力会降低。

H7N9流感是今年早些时候在中国出现的,迄今已造成超过130个人类感染病例。由于还没有针对这种流感的疫苗,所以目前抗病毒药物是控制H7N9感染的惟一办法。我们知道,抗病毒药物治疗会导致流感病毒产生抗药性,而这项研究进一步说明了对H7N9流感病毒感染慎用抗病毒药物的必要性。

原文出处:

Hai R, Schmolke M, Leyva-Grado VH, Thangavel RR, Margine I, Jaffe EL, Krammer F, Solórzano A, García-Sastre A, Palese P, Bouvier NM.Influenza A(H7N9) virus gains neuraminidase inhibitor resistance without loss of in vivo virulence or transmissibility.Nat Commun. 2013 Dec 10;4:2854. doi: 10.1038/ncomms3854.【原文下载】

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    2014-10-19 fusion
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    2014-10-06 liye789132251
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    2014-12-25 liuli5079
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    2014-01-16 songbq

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