• Biochem. Biophys. Res. Commun. · Dec 2009

    Oseltamivir boosts 2009 H1N1 virus infectivity in vitro.

    • Xiaojing Lin, Jianfang Zhou, Yonghui Zhang, Jia Wu, Fengwei Zhang, Zi Li, Ye Zhang, Shengli Bi, Yuelong Shu, and Yue Wang.
    • State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Yingxin Street 100, Xuanwu District, Beijing 100052, People's Republic of China.
    • Biochem. Biophys. Res. Commun. 2009 Dec 25; 390 (4): 1305-8.

    AbstractThe neuraminidase inhibitor oseltamivir has been identified to have significant anti-influenza activity in clinical practice. However, its efficacy has not been verified in enough subtypes of influenza A virus, particularly, the current pandemic virus, H1N1. In vitro, using our influenza pseudotyped particle system, oseltamivir displayed significant inhibitory effects on viral NA activity and pp release. Conversely, a boosting effect on viral infection was observed, particularly with the 2009 H1N1 pp at oseltamivir concentrations above 0.025muM. Further testing on two wild 2009 H1N1 virus strains, A/California/07/09 and A/Sichuan/1/09, as well as a seasonal flu virus, A/Baoan/51/2008, confirmed these findings.

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