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2020-5-31 11:36:37

Yang J, Li H, Jia L, Lan X, Zhao Y, Bian H, Li Z. High expression levels of influenza virus receptors in airway of the HBV-transgenic mice. Epidemiol Infect. 2019 Nov 4;147:e297.
submited by kickingbird at Nov, 7, 2019 7:48 AM from Epidemiol Infect. 2019 Nov 4;147:e297.

In the human population, influenza A viruses are associated with acute respiratory illness and are responsible for millions of deaths annually. Avian and human influenza viruses typically have a different α2-3- and α2-6-linked sialic acid (SA) binding preference. Only a few amino acid changes in the haemagglutinin on the surface of avian influenza viruses (AIV) can cause a switch from avian to human receptor specificity, and the individuals with pathognostic chronic diseases might be more susceptible to AIV due to the decreased expression level of terminal α2-3-linked SA in their saliva. Here, using lectin and virus histochemical staining, we observed the higher expression levels of α2-3/6-linked SA influenza virus receptors in the airway of HBV-transgenic mice compared with that of control mice due to the significant decrease in control mice during ageing, which imply that this is also a risk factor for individuals with pathognostic chronic diseases susceptible to influenza viruses. Our findings will help understand the impact on influenza virus pathogenesis and transmission.

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