Use of Avian Bornavirus Isolates to Induce Proventricular Dilatation Disease in Conures

Texas A&M University, College Station, Texas 77843-4467, USA.
Emerging Infectious Diseases (Impact Factor: 6.75). 03/2010; 16(3):473-9. DOI: 10.3201/eid1603.091257
Source: PubMed


Avian bornavirus (ABV) is a newly discovered member of the family Bornaviridae that has been associated with the development of a lethal neurologic syndrome in birds, termed proventricular dilatation disease (PDD). We successfully isolated and characterized ABV from the brains of 8 birds with confirmed PDD. One isolate was passed 6 times in duck embryo fibroblasts, and the infected cells were then injected intramuscularly into 2 healthy Patagonian conures (Cyanoliseus patagonis). Clinical PDD developed in both birds by 66 days postinfection. PDD was confirmed by necropsy and histopathologic examination. Reverse transcription-PCR showed that the inoculated ABV was in the brains of the 2 infected birds. A control bird that received uninfected tissue culture cells remained healthy until it was euthanized at 77 days. Necropsy and histopathologic examinations showed no abnormalities; PCR did not indicate ABV in its brain tissues.

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    • "In a formal attempt to prove Koch's postulates, Gray et al. (2010) isolated ABV in cultured DEF. After six passages, these infected cells were injected intramuscularly into two Patagonian conures (Cyanoliseus patagonis ). "
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