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Pathogenesis of influenza A (H5N1) virus infection in a primate model
G F Rimmelzwaan1, T Kuiken, G van Amerongen
1Institute of Virology, National Influenza Center, Erasmus University Medical Center Rotterdam, 3000 DR Rotterdam, The Netherlands.
Abstract:
Cynomolgus macaques (Macaca fascicularis) infected with influenza virus A/Hong Kong/156/97 (H5N1) developed acute respiratory distress syndrome and fever associated with a necrotizing interstitial pneumonia. Reverse transcription PCR, virus isolation, and immunohistochemistry showed that the respiratory tract is the major target of the virus.
Insights
Cynomolgus macaques infected with H5N1 influenza developed severe respiratory illness. The respiratory tract was identified as the primary target for this highly pathogenic avian influenza virus.
Area of Science:
- Virology
- Pathology
- Animal Models
Background:
- Highly pathogenic avian influenza viruses, such as H5N1, pose significant pandemic threats.
- Understanding the pathogenesis of H5N1 influenza in mammalian models is crucial for developing effective countermeasures.
Purpose of the Study:
- To investigate the pathological effects and viral tropism of H5N1 influenza in a non-human primate model.
Main Methods:
- Cynomolgus macaques were infected with A/Hong Kong/156/97 (H5N1) influenza virus.
- Disease progression was monitored, and tissues were analyzed using reverse transcription PCR, virus isolation, and immunohistochemistry.
Main Results:
- Infected macaques exhibited acute respiratory distress syndrome, fever, and necrotizing interstitial pneumonia.
- Detection of the virus was highest in the respiratory tract tissues, indicating it as the primary site of infection.
Conclusions:
- Cynomolgus macaques serve as a relevant model for studying H5N1 influenza pathogenesis.
- The respiratory system is the main target organ for H5N1 influenza virus infection in this model.