H4N8 subtype avian influenza virus isolated from shorebirds contains a unique PB1 gene and causes severe respiratory disease in mice
Autor: | Vuong N, Bui, Haruko, Ogawa, Xininigen, Kazuji, Karibe, Kengo, Matsuo, Sanaa S A, Awad, Germaine L, Minoungou, Satoshi, Yoden, Hiroaki, Haneda, Lai H, Ngo, Shio, Tamaki, Yu, Yamamoto, Kikuyasu, Nakamura, Keisuke, Saito, Yukiko, Watanabe, Jonathan, Runstadler, Falk, Huettmann, Falk, Huettman, George M, Happ, Kunitoshi, Imai |
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Rok vydání: | 2012 |
Předmět: |
Wild bird
Mouse viruses Molecular Sequence Data Animals Wild Avian influenza virus Viral antigen Biology medicine.disease_cause Article Virus Homology (biology) Cell Line Birds Feces Mice Viral Proteins Japan Virology Influenza Human medicine Animals Humans Pathogenicity Amino Acid Sequence Respiratory Tract Infections Gene Phylogeny Mice Inbred BALB C Reassortant Virulence Inoculation Respiratory disease virus diseases H4N8 medicine.disease Influenza A virus subtype H5N1 Influenza A virus Female Sequence Alignment |
Zdroj: | Virology. 423:77-88 |
ISSN: | 0042-6822 |
Popis: | H4N8 subtype avian influenza viruses were isolated from shorebirds in eastern Hokkaido. All the isolates shared > 99.7% nucleotide homology, and all the viral genes except for PB1 were highly related to those of A/red-necked stint/Australia/1/04. Thus, the isolates were regarded as PB1 reassortants. The most similar PB1 gene was identified in A/mallard/New Zealand/1615-17/04 (H4N6) with nucleotide homology of 90.9%. BALB/c mice intranasally inoculated with the H4N8 isolates developed severe respiratory disease, which eventually led to death in some mice. The virus was isolated from the lungs, and viral antigen was detected in the lungs with pneumonia. Other H4 subtype viruses tested did not cause any symptoms in mice, although these viruses were also isolated from the lungs. The PB2 gene of the H4N8 isolates contains K482R, but not the E627K or D701N substitutions. The PB1-F2 gene of the isolates consists of a 101-amino acid unique sequence, but lacks the N66S mutation. |
Databáze: | OpenAIRE |
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