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Related Experiment Videos

Caprine beta-mannosidosis: clinical and pathological features.

M Z Jones, J G Cunningham, A W Dade

    Journal of Neuropathology and Experimental Neurology
    |May 1, 1983
    PubMed
    Summary

    A rare genetic disorder, beta-mannosidosis, caused by beta-mannosidase deficiency, was identified in Nubian goats. This inherited disease leads to severe neurological deficits and developmental abnormalities in affected offspring.

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    Area of Science:

    • Veterinary Medicine
    • Biochemistry
    • Genetics

    Background:

    • Beta-mannosidosis is an inherited glycoprotein catabolism defect.
    • It is characterized by beta-mannosidase deficiency and oligosaccharide accumulation.
    • This condition has not been previously identified in any species.

    Purpose of the Study:

    • To describe the clinical, pathological, and biochemical features of beta-mannosidosis in Nubian goats.
    • To differentiate beta-mannosidosis from other inherited glycoprotein catabolism disorders.

    Main Methods:

    • Clinical and neurological examinations of affected goats.
    • Macroscopic and microscopic pathological evaluations of nervous tissues.
    • Correlation of clinical signs with biochemical findings (oligosaccharide accumulation and enzyme deficiency).

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    Main Results:

    • Four out of 13 offspring from related Nubian goats exhibited beta-mannosidosis.
    • Affected goats showed severe neurological impairment, including inability to rise or walk, facial dysmorphism, and tremors.
    • Pathological findings included myelin paucity, cytoplasmic vacuolation, and axonal spheroids in the central nervous system.

    Conclusions:

    • Beta-mannosidosis in Nubian goats presents with distinct neonatal clinical, pathological, and biochemical features.
    • This study provides the first identification and characterization of beta-mannosidosis in a non-human species.
    • The findings aid in differentiating this disorder from alpha-mannosidosis and other lysosomal storage diseases.