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Emerg Microbes Infect. 2018 Jun 13;7(1):107. doi: 10.1038/s41426-018-0113-2.
Patient-derived avian influenza A (H5N6) virus is highly pathogenic in mice but can be effectively treated by anti-influenza polyclonal antibodies.
Pan W1, Xie H1, Li X2, Guan W1, Chen P3, Zhang B3, Zhang M1, Dong J1, Wang Q3, Li Z3, Li S2, Yang Z1, Li C1, Zhong N1, Huang J4, Chen L5,6.
Author information
Abstract
Highly pathogenic avian influenza A (H5N6) virus has been circulating in poultry since 2013 and causes sporadic infections and fatalities in humans. Due to the re-occurrence and continuous evolution of this virus subtype, there is an urgent need to better understand the pathogenicity of the H5N6 virus and to identify effective preventative and therapeutic strategies. We established a mouse model to evaluate the virulence of H5N6 A/Guangzhou/39715/2014 (H5N6/GZ14), which was isolated from an infected patient. BALB/c mice were inoculated intranasally with H5N6/GZ14 and monitored for morbidity, mortality, cytokine production, lung injury, viral replication, and viral dissemination to other organs. H5N6/GZ14 is highly pathogenic and can kill 50% of mice at a very low infectious dose of 5 plaque-forming units (pfu). Infection with H5N6/GZ14 showed rapid disease progression, viral replication to high titers in the lung, a strongly induced pro-inflammatory cytokine response, and severe lung injury. Moreover, infectious H5N6/GZ14 could be detected in the heart and brain of the infected mice. We also demonstrated that anti-influenza polyclonal antibodies generated by immunizing rhesus macaques could protect mice from lethal infection. Our results provide insights into the pathogenicity of the H5N6 human isolate.
PMID: 29899428 DOI: 10.1038/s41426-018-0113-2
Patient-derived avian influenza A (H5N6) virus is highly pathogenic in mice but can be effectively treated by anti-influenza polyclonal antibodies.
Pan W1, Xie H1, Li X2, Guan W1, Chen P3, Zhang B3, Zhang M1, Dong J1, Wang Q3, Li Z3, Li S2, Yang Z1, Li C1, Zhong N1, Huang J4, Chen L5,6.
Author information
Abstract
Highly pathogenic avian influenza A (H5N6) virus has been circulating in poultry since 2013 and causes sporadic infections and fatalities in humans. Due to the re-occurrence and continuous evolution of this virus subtype, there is an urgent need to better understand the pathogenicity of the H5N6 virus and to identify effective preventative and therapeutic strategies. We established a mouse model to evaluate the virulence of H5N6 A/Guangzhou/39715/2014 (H5N6/GZ14), which was isolated from an infected patient. BALB/c mice were inoculated intranasally with H5N6/GZ14 and monitored for morbidity, mortality, cytokine production, lung injury, viral replication, and viral dissemination to other organs. H5N6/GZ14 is highly pathogenic and can kill 50% of mice at a very low infectious dose of 5 plaque-forming units (pfu). Infection with H5N6/GZ14 showed rapid disease progression, viral replication to high titers in the lung, a strongly induced pro-inflammatory cytokine response, and severe lung injury. Moreover, infectious H5N6/GZ14 could be detected in the heart and brain of the infected mice. We also demonstrated that anti-influenza polyclonal antibodies generated by immunizing rhesus macaques could protect mice from lethal infection. Our results provide insights into the pathogenicity of the H5N6 human isolate.
PMID: 29899428 DOI: 10.1038/s41426-018-0113-2