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Title: Pathogenicity of genetically similar, H5N1 highly pathogenic avian influenza virus strains in chicken and the differences in sensitivity among different chicken breeds
Authors: Aya Matsuu
Tomoko Kobayashi
Tuangthong Patchimasiri
Takashi Shiina
Shingo Suzuki
Kridsada Chaichoune
Parntep Ratanakorn
Yasuaki Hiromoto
Haruka Abe
Sujira Parchariyanon
Takehiko Saito Saito
Thailand-Japan Zoonotic Diseases Collaborating Center (ZDCC)
National Institute of Animal Health, NARO
Kagoshima University
Tokai University School of Medicine
Mahidol University
Thailand National Institute of Animal Health
Keywords: Agricultural and Biological Sciences;Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Apr-2016
Citation: PLoS ONE. Vol.11, No.4 (2016)
Abstract: © 2016 Matsuu et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Differences in the pathogenicity of genetically closely related H5N1 highly pathogenic avian influenza viruses (HPAIVs) were evaluated in White Leghorn chickens. These viruses varied in the clinical symptoms they induced, including lethality, virus shedding, and replication in host tissues. A comparison of the host responses in the lung, brain, and spleen suggested that the differences in viral replication efficiency were related to the host cytokine response at the early phase of infection, especially variations in the proinflammatory cytokine IL-6. Based on these findings, we inoculated the virus that showed the mildest pathogenicity among the five tested, A/pigeon/Thailand/VSMU-7-NPT/2004, into four breeds of Thai indigenous chicken, Phadu-Hung-Dang (PHD), Chee, Dang, and Luang-Hung-Khao (LHK), to explore effects of genetic background on host response. Among these breeds, Chee, Dang, and LHK showed significantly longer survival times than White Leghorns. Virus shedding from dead Thai indigenous chickens was significantly lower than that from White Leghorns. Although polymorphisms were observed in the Mx and MHC class I genes, there was no significant association between the polymorphisms in these loci and resistance to HPAIV.
ISSN: 19326203
Appears in Collections:Scopus 2016-2017

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