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Complete genome sequence of duck tembusu virus isolated from pekin ducks in shanghai, china.

ABSTRACT: We report here the complete genomic sequence of the duck Tembusu virus (DTMUV) SH001 strain, isolated from Pekin ducks in Shanghai, China, in 2013. The genome of SH001 is 10,990 nucleotides (nt) in length and contains a single open reading frame encoding a putative polyprotein of 3,425 amino acids.

SUBMITTER: Cheng Y

PROVIDER: S-EPMC4408332 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature

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Complete genome sequence of duck tembusu virus isolated from pekin ducks in shanghai, china.

Cheng Yuqiang Y Zhang Chuanpeng C Wang Hengan H Yan Yaxian Y Ding Chan C Sun Jianhe J

Genome announcements 20150423 2

We report here the complete genomic sequence of the duck Tembusu virus (DTMUV) SH001 strain, isolated from Pekin ducks in Shanghai, China, in 2013. The genome of SH001 is 10,990 nucleotides (nt) in length and contains a single open reading frame encoding a putative polyprotein of 3,425 amino acids. ...[more]

PMID: 25908131

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Project description:BackgroundAlthough several studies have revealed that the sensitivity of ducklings to duck Tembusu virus (DTMUV) was related to age, however, DTMUV was originally isolated from egg-laying ducks, and the ovary was the target organ of this virus. Cherry Valley breeding ducks aged 15- and 55-week-old (they are reserve breeding ducks and the normal egg-laying breeding ducks, respectively) were infected with DTMUV, using intramuscular injection, to study the effect of age-related difference on the pathogenicity of DTMUV in breeding ducks.ResultsExaminations of clinical symptoms, gross and microscopic lesions, viral loads, cytokines and serum neutralizing antibodies were performed. Results showed that obvious clinical symptoms, such as depression, ruffled feathers, ataxia and egg-laying drop were observed in the 55-week-old laying ducks, with five ducks dying at 5-7 days post infection (dpi). The 15-week-old ducks showed slight symptoms during infection. Gross lesions were severe and characterized by the congestion, hemorrhage and swelling of some organs in the 55-week-old ducks, including the hemorrhage of endocardium, hepatomegaly, splenomegaly, oviduct hemorrhage, hyperemia and deformation of the ovary. Mild endocardial hemorrhage and hepatosplenomegaly were observed in the 15-week-old ducks. Similarly, there was a significant difference in microscopic lesions between the two groups. The older ducks displayed severe microscopic lesions, specifically in the hemorrhage, interstitial inflammatory cell infiltration of the endocardium, typical viral encephalitis and hemorrhage in the ovary. But on the whole, the 15-week-old ducks showed milder lesions. Viral loads in tissues of the older group were significantly higher than those of the younger group. The levels of interferon (IFN)-γ, interleukin (IL)-2 and neutralizing antibody in the 15-week-old ducks were higher than in the 55-week-old ducks at the early stage of the DTMUV infection, suggesting the immune response in the younger ducks to DTMUV was stronger than in the older ducks.ConclusionsThese results demonstrated that age-related differences in susceptibility to DTMUV in breeding ducks was significant, with 55-week-old egg-laying ducks being more susceptible to DTMUV than 15-week-old reserve breeding ducks.

Dataset Information

Complete genome sequence of duck tembusu virus isolated from pekin ducks in shanghai, china.

Publications

Complete genome sequence of duck tembusu virus isolated from pekin ducks in shanghai, china.

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