Quasispecies of the D225G Substitution in the Hemagglutinin of Pandemic Influenza A(H1N1) 2009 Virus from Patients with Severe Disease in Hong Kong, China

The D225G (aspartic acid to glycine) substitution in the hemagglutinin of H1N1 influenza virus may alter its receptorbinding specificity. Direct analysis of polymorphisms in 126 amino acids spanning the receptor-binding site in the hemagglutinin of pandemic H1N1 2009 virus from 117 clinical specimen...

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Veröffentlicht in:The Journal of infectious diseases 2010-05, Vol.201 (10), p.1517-1521
Hauptverfasser: Chen, Honglin, Wen, Xi, To, Kelvin K. W., Wang, Pui, Tse, Herman, Chan, Jasper F. W., Tsoi, Hoi-Wah, Fung, Kitty S. C., Tse, Cindy W. S., Lee, Rodney A., Chan, Kwok-Hung, Yuen, Kwok-Yung
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Sprache:eng
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Zusammenfassung:The D225G (aspartic acid to glycine) substitution in the hemagglutinin of H1N1 influenza virus may alter its receptorbinding specificity. Direct analysis of polymorphisms in 126 amino acids spanning the receptor-binding site in the hemagglutinin of pandemic H1N1 2009 virus from 117 clinical specimens in Hong Kong found the D225G substitution for 7 (12.5%) of 57 patients with severe disease and for 0 (0%) of 60 patients with mild disease. D225G quasispecies were identified mainly in endotracheal aspirate samples and were identified less frequently in nasopharyngeal aspirate samples from patients with severe disease. Continuous monitoring of the prevalence and tissue tropism of this variant during its circulation among humans is important.
ISSN:0022-1899
1537-6613
DOI:10.1086/652661