Abstract
The authors describe the clinical phenotypes of hexosaminidase deficiencies (GM2 gangliosidosis). The symptoms, differently combined, include cerebellar ataxia, motor neuron disease, dystonia, psychosis, neurovegetative troubles with different severity. Morphological changes are evident in rectal, muscle or nerve biopsies. Minor clinical changes are described in carriers from a family. A chronic GM2 gangliosidosis has to be suspected in any atypical case with the above-mentioned symptoms with autosomal-recessive inheritance.
Publication types
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Research Support, Non-U.S. Gov't
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Review
MeSH terms
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Adolescent
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Adult
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Biopsy
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Cerebellar Ataxia / diagnostic imaging
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Cerebellar Ataxia / etiology
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Cerebellar Ataxia / pathology
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Child
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Diagnosis, Differential
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Dystonia / etiology
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Electrodiagnosis
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G(M2) Ganglioside / metabolism*
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Gangliosidoses / classification
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Gangliosidoses / complications
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Gangliosidoses / diagnosis
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Gangliosidoses / enzymology
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Gangliosidoses / genetics
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Gangliosidoses / pathology*
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Genes, Recessive
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Genetic Carrier Screening
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Humans
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Motor Neuron Disease / etiology
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Neurocognitive Disorders / etiology
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Pedigree
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Phenotype
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Radiography
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Sandhoff Disease / enzymology
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Sandhoff Disease / pathology
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Tay-Sachs Disease / enzymology
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Tay-Sachs Disease / pathology
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beta-N-Acetylhexosaminidases / deficiency*
Substances
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G(M2) Ganglioside
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beta-N-Acetylhexosaminidases