The pathogenicity and host immune response associated with H5N1 highly pathogenic avian influenza virus in quail

Yukiko Uno, Tatsufumi Usui, Kosuke Soda, Yoshikazu Fujimoto, Takashi Takeuchi, Hiroshi Ito, Toshihiro Ito, Tsuyoshi Yamaguchi

研究成果: Contribution to journalArticle

14 被引用数 (Scopus)

抄録

Quail, like chickens, are susceptible to H5N1 subtype highly pathogenic avian influenza virus (HPAIV). Both birds experience high mortality, but quail usually survive a few more days than chicken. To understand why, we monitored quail and chickens after inoculation with 106 fifty-percent egg infectious doses of HPAIV A/whooper swan/Aomori/1/2008 (H5N1). The clinical course initiated as depression at 48 hr post inoculation (h.p.i.) in quail and at 36 h.p.i. in chicken, and all infected birds died. Mean death time of quail (91 hr) was significantly longer than that of chicken (66 hr). The virus titers of most tissue samples collected before death were not significantly different. At 24 h.p.i., interferon gamma (IFN-γ) mRNA expression in peripheral blood mononuclear cells (PBMC) was up-regulated in the quail but down-regulated in the chicken, although TLR-7 and seven other cytokines showed no significant differences between quail and chicken. The viral load in quail PBMC was significantly lower than that in chickens. These results suggest that the induction of IFN-γ after HPAIV infection in quail is related to lower titer of HPAIV. In conclusion, the different clinical courses observed between quail and chicken infected with H5N1 HPAIV might be caused by different IFN-γ responses against the HPAIV infection.

本文言語英語
ページ(範囲)451-457
ページ数7
ジャーナルJournal of Veterinary Medical Science
75
4
DOI
出版ステータス出版済み - 2013

All Science Journal Classification (ASJC) codes

  • veterinary(all)

フィンガープリント 「The pathogenicity and host immune response associated with H5N1 highly pathogenic avian influenza virus in quail」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル