Pandemic H1N1 influenza virus causes a stronger inflammatory response than seasonal H1N1 influenza virus in ferrets

Pandemic H1N1 influenza virus causes a stronger inflammatory response than seasonal H1N1... A 2009 H1N1 influenza virus pandemic, which had its origin in swine, caused severe illness and mortality in humans. Inflammatory responses may be responsible for pathogenesis caused by infection with influenza viruses. To better understand the pathogenic mechanism, clinical signs and inflammatory responses in ferrets infected with the pandemic H1N1 were compared with those caused by seasonal H1N1 influenza virus. Ferrets infected with the 2009 pandemic H1N1 virus displayed higher body temperatures, greater reduction in body weight, and higher viral titers in the tracheae and lungs. Levels of inflammatory cytokines, including interleukin-6, interferon-alpha, and tumor necrosis factor-alpha, were higher in the lungs of ferrets infected with the 2009 pandemic H1N1. The data support the idea that increased pathogenesis caused by the 2009 pandemic H1N1 influenza virus may have been partially mediated by a higher induction of pro-inflammatory cytokines in the lungs of affected humans or animals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Pandemic H1N1 influenza virus causes a stronger inflammatory response than seasonal H1N1 influenza virus in ferrets

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Publisher
Springer Vienna
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Biomedicine; Medical Microbiology ; Infectious Diseases; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-010-0914-7
Publisher site
See Article on Publisher Site

Abstract

A 2009 H1N1 influenza virus pandemic, which had its origin in swine, caused severe illness and mortality in humans. Inflammatory responses may be responsible for pathogenesis caused by infection with influenza viruses. To better understand the pathogenic mechanism, clinical signs and inflammatory responses in ferrets infected with the pandemic H1N1 were compared with those caused by seasonal H1N1 influenza virus. Ferrets infected with the 2009 pandemic H1N1 virus displayed higher body temperatures, greater reduction in body weight, and higher viral titers in the tracheae and lungs. Levels of inflammatory cytokines, including interleukin-6, interferon-alpha, and tumor necrosis factor-alpha, were higher in the lungs of ferrets infected with the 2009 pandemic H1N1. The data support the idea that increased pathogenesis caused by the 2009 pandemic H1N1 influenza virus may have been partially mediated by a higher induction of pro-inflammatory cytokines in the lungs of affected humans or animals.

Journal

Archives of VirologySpringer Journals

Published: May 1, 2011

References

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