2002年9月
Generation of velogenic Newcastle disease viruses from a nonpathogenic waterfowl isolate by passaging in chickens
VIROLOGY
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- 巻
- 301
- 号
- 2
- 開始ページ
- 206
- 終了ページ
- 211
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1006/viro.2002.1539
- 出版者・発行元
- ACADEMIC PRESS INC ELSEVIER SCIENCE
A benign Newcastle disease virus (NDV) recently became highly virulent during replication in domestic chickens. It is still unclear whether NDVs circulating among wild waterfowl also have the potential to become highly pathogenic (velogenic) in chickens. To demonstrate experimentally the generation of velogenic NDV from a nonpathogenic waterfowl isolate, we passaged an avirulent goose isolate in chickens. After nine consecutive passages by air-sac inoculation, followed by five passages in chick brain, the virus became highly virulent in chickens, producing a 100% mortality rate, and demonstrating typical velogenic properties in pathogenicity tests. Sequence analysis at the fusion protein cleavage site showed that the original isolate contained the typical avirulent type sequence, E-R-Q-E-R/L, which progressed incrementally to a typical virulent type, K-R-Q-K-R/F, during repeated passage in chickens. These results demonstrate that avirulent viruses, maintained in wild waterfowl in nature and bearing the consensus avirulent type sequence, have the potential to become velogenic after transmission to and circulation in chicken populations. The results also suggest that chickens provide a mechanism for the selection of virulent viruses from an avirulent background. (C) 2002 Elsevier Science (USA).
- リンク情報
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- DOI
- https://doi.org/10.1006/viro.2002.1539
- CiNii Articles
- http://ci.nii.ac.jp/naid/80015593059
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/12359423
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000178376400002&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1006/viro.2002.1539
- ISSN : 0042-6822
- CiNii Articles ID : 80015593059
- PubMed ID : 12359423
- Web of Science ID : WOS:000178376400002