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Pesquisa Veterinária Brasileira

Print version ISSN 0100-736XOn-line version ISSN 1678-5150


SILVA, Marcia C. et al. Neuropatologia da cinomose canina: 70 casos (2005-2008). Pesq. Vet. Bras. [online]. 2009, vol.29, n.8, pp.643-652. ISSN 0100-736X.

The current study was performed to determine the pathology and distribution of lesions in the central nervous system (CNS) of 70 dogs naturally affected by canine distemper. Cases were grouped according to the age of the dogs and classified according to the evolution of the lesions. It was possibly to conclude that: (1) the encephalomyelitis induced by canine distemper virus is more prevalent in puppies and adults; (2) gross lesions in the CNS occur infrequently; (3) the brain is more frequently affected than the spinal cord; (4) the five anatomical sites of the rain more frequently affected are, in decreasing order of frequency, cerebellum, diencephalon, frontal lobe of telencephalon, pons and mesencephalon; (5) the anatomical site more frequently affected in the spinal cord is the cervical (C1-C5) segment; (6) subacute and chronic lesions are more common than acute ones; (7) demyelization is the more prevalent lesion and occur mainly in the cerebellum, pons and diencephalons, usually associated with astrogliosis and non-suppurative inflammation; (8) in most cases with astrogliosis, gemistocytic astrocytes are observed, frequently with syncitia formation; (9) non-suppurative leptomeningitis, malacia and cortical neuronal necrosis are moderately frequent in the brain and less so in the spinal cord; (10) inclusion bodies are frequent in the brain; occur mainly in astrocytes and less frequently in neurons, however independently of the affected cell they occur mainly in the nucleus; (11) a classification of canine distemper encephalitis based in age-related clinical syndromes it is not accurate.

Keywords : Diseases of dogs; neuropathology; canine distemper.

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