Polyomavirus Encephalopathy in a Ducorps Cockatoo (Cacatua Ducorpsii) with Psittacine Beak and Feather Disease
| Autor: | Frank D. Niagro, Kenneth S. Latimer, W. L. Steffens, Raymond P. Campagnoli, Branson W. Ritchie |
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| Rok vydání: | 1996 |
| Předmět: |
0301 basic medicine
Pathology medicine.medical_specialty Necrosis 040301 veterinary sciences 030106 microbiology Encephalopathy Animals Wild In situ hybridization Psittaciformes 0403 veterinary science 03 medical and health sciences Cacatua ducorpsii medicine Animals Circoviridae Infections In Situ Hybridization Cell Nucleus Neurons Brain Diseases Polyomavirus Infections Ducorps cockatoo General Veterinary biology Bird Diseases Brain 04 agricultural and veterinary sciences medicine.disease biology.organism_classification Virology medicine.anatomical_structure nervous system Astrocytes DNA Viral Nucleic acid medicine.symptom Polyomavirus Psittacine beak and feather disease Astrocyte |
| Zdroj: | Journal of Veterinary Diagnostic Investigation. 8:291-295 |
| ISSN: | 1943-4936 1040-6387 |
| DOI: | 10.1177/104063879600800303 |
| Popis: | Necropsy tissues were examined from an adult wild-caught Ducorps cockatoo (Cacatua ducorpsii) with progressive neurologic signs. Of the tissue specimens selected for histologic evaluation, only the brain contained rare amphophilic, glassy intranuclear inclusions within astrocytes and some neurons. Astrocyte and neuronal degeneration and necrosis also were observed. Scattered astrocytes, with and without discernable inclusions, contained avian polyomavirus (APV) nucleic acid, as determined by DNA in situ hybridization. In addition, endothelial cells and intravascular leukocytes contained psittacine beak and feather disease viral nucleic acid, as determined by DNA in situ hybridization, indicating dual viral infection. Electron microscopic examination of formalin-fixed brain tissue revealed typical intranuclear APV particles in some astrocytes. Encephalopathy ultimately was attributed to APV infection. |
| Databáze: | OpenAIRE |
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