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Emergence of reticuloendotheliosis virus in pigeons in Guangdong Province, Southern China

文献类型： 外文期刊

作者： Zhai, Shao-Lun 1 ; Chen, Sheng-Nan 2 ; Lin, Tao 3 ; Wen, Xiao-Hui 1 ; Wei, Wen-Kang 1 ; Lv, Dian-Hong 1 ; Chen, Rui-Ai 2 ;

作者机构： 1.Guangdong Acad Agr Sci, Anim Dis Diagnost Ctr, Inst Anim Hlth, Guangdong Key Labratory Anim Dis Prevent, 21 Baishigang St, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Wens Dahuanong Biotechnol Co Ltd, Xinxing 527400, Peoples R China

3.S Dakota State Univ, Dept Chem & Biochem, Brookings, SD 57007 USA

4.South China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China

关键词： Reticuloendotheliosis;Reticuloendotheliosis virus;First report;Pigeons;South China

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.574； 五年影响因子：2.466 ）

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收录情况： SCI

摘要： Reticuloendotheliosis virus (REV), an important immunosuppressive pathogen, has many hosts, including chickens, ducks, geese, turkeys, and wild birds. Clinically, REV may lead to increased susceptibility to other pathogens, resulting in serious tissue damage (especially tumors) and the death of its host. In this study, we encountered a disease outbreak resulting in a large number of deaths of pigeons in Guangdong Province, Southern China. Histopathological analysis revealed apparent tumor-like lesions in multiple organs of pigeons. PCR assays for detection of tumor-associated pathogens (REV, avian leukosis virus, and Marek's disease virus) in poultry revealed the presence of REV sequences only. Moreover, fowlpox virus (FPV) with an insertion of REV long terminal repeat (LTR) sequences was also considered, but it was excluded using a specific PCR assay. To gain more genetic information, two full-length REV genome sequences were determined and found to have the highest nucleotide sequence similarity (99.9 %) and the closest genetic relationship to a vaccine strain (MD-2) and had a more distant genetic relationship (94.3 %) to a duck-origin strain (ATCC-VR775). To confirm the presence of REVs in pigeons, specific-pathogen-free (SPF) chickens and healthy pigeons were inoculated with microfiltered tumor tissue homogenates and were found to be susceptible to infection with REV. To our knowledge, this is the first report of REV in pigeons, and the data suggest that pigeons may be the natural host of REV.

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