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Canine neuroaxonal dystrophy.

L C Cork, J C Troncoso, D L Price

    Journal of Neuropathology and Experimental Neurology
    |May 1, 1983
    PubMed
    Summary
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    Canine neuroaxonal dystrophy is a new familial disorder in Rottweilers causing progressive sensory ataxia. Neuropathological findings in affected dogs resemble those seen in human neuroaxonal dystrophy.

    Area of Science:

    • Veterinary Neurology
    • Canine Genetics
    • Neuroscience

    Background:

    • Canine neuroaxonal dystrophy (CNAD) is a recently identified familial disorder.
    • This condition primarily affects Rottweiler dogs, presenting with progressive sensory ataxia.

    Purpose of the Study:

    • To characterize the clinical and neuropathological features of canine neuroaxonal dystrophy.
    • To compare the observed pathology in dogs with human neuroaxonal dystrophy.

    Main Methods:

    • Clinical evaluation of four affected Rottweiler dogs.
    • Necropsy and histopathological examination of two dogs.
    • Ultrastructural analysis of axonal spheroids.

    Main Results:

    • Clinical signs included progressive sensory ataxia.

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  • Mild cerebellar atrophy was observed in autopsied dogs.
  • Massive axonal spheroids were found throughout the neuraxis, predominantly in the spinal cord dorsal horn and gracile/cuneate nuclei.
  • Ultrastructural examination revealed spheroid composition of vesicles, lamellae, and organelles within swollen axons.

    • Conclusions:

    • Canine neuroaxonal dystrophy is a distinct familial neurological disorder in Rottweilers.
    • The neuropathological findings in this canine disorder are similar to human neuroaxonal dystrophy, suggesting conserved pathomechanisms.