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Ioannidis M, Tanaka M, Yasui S, Kezuka C, Oyamada M, Hasegawa T, Izawa T, Yamate J, Kuwamura M. Late onset of cerebellar cortical degeneration in a Magellanic penguin (Spheniscus magellanicus). J Vet Med Sci 2019; 81:750-752. [PMID: 30956256 PMCID: PMC6541849 DOI: 10.1292/jvms.19-0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An 8-year-old female Magellanic penguin (Spheniscus magellanicus) started to show epilepsy-like seizures. Subsequent magnetic resonance imaging (MRI) examinations did not
reveal any responsible lesions. The neurological symptoms worsened at the age of 10. This penguin became recumbent and died 6 months later after the apparition of the recumbency. At
necropsy, only multiple yellowish necrotic lesions in the air sacs and lungs were found. Histopathological evaluation of the brain showed a marked loss of Purkinje cells and many
hypertrophied parvalbumin-positive basket/stellate cells were seen in the cerebellar cortex. Calbindin immunohistochemistry demonstrated disrupted arrangement of dendrites in the Purkinje
cells. This case was diagnosed as cerebellar cortical degeneration with a very late onset and a slow progression in a Magellanic penguin.
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Affiliation(s)
- Marianthi Ioannidis
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Miyuu Tanaka
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Sayaka Yasui
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Chiho Kezuka
- Kobe Municipal Suma Aqualife Park, Kobe, Hyogo 654-0049, Japan
| | | | | | - Takeshi Izawa
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Jyoji Yamate
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Mitsuru Kuwamura
- Laboratory of Veterinary Pathology, Graduate School of Life and Environmental Science, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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Jackson A. In this issue--August 2009. Aust Vet J 2009; 87:301-2. [PMID: 19673840 DOI: 10.1111/j.1751-0813.2009.464_1.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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