OBJECTIVE
To determine the clinical features and biochemical basis of the first Japanese patient with the GM2 gangliosidosis AB variant.
METHODS
The clinical manifestations and laboratory findings in the patient were investigated. Cultured fibroblasts from the patient were analyzed by means of
Adult-onset GM2 gangliosidosis is very rare and only three autopsy cases have been reported up to now. We report herein an autopsy case of adult-onset GM2 gangliosidosis. The patient developed slowly progressive motor neuron disease-like symptoms after longstanding mood disorder and cognitive
The authors present a case of adult GM2 gangliosidosis, B1 enzymatic type. The main clinical features found were cerebellar ataxia, proximal lower limb weakness and myokymia. The neurological examination, and the biochemical, electrophysiologic and imaging studies are all described. Decreased
This report concerns a 10-month-old boy, admitted to the Veterans General Hospital-Kaohsiung with generalized tonic convulsion and aspiration pneumonia. He was found to have had developmental regression, progressive hypotonia and hepatosplenomegaly since four months of age. Physical examination
Three female siblings in a litter of seven Portuguese Water dogs (PWDs) showed clinical signs of ataxia and/or lameness at 5 months of age. Signs of cerebellar dysfunction (intention tremors, ataxia, widebased stance, dysmetria, and/or nystagmus) and mild limb weakness developed rapidly. Results of
Ultrastructural and biochemical studies were performed on postmortem material of a 67-year-old woman presenting with proximal muscle weakness in the legs, slurred speech, and mental subnormality. The symptoms began at age 19 and showed extremely slow progression, mimicking progressive muscular
An adult with Sandhoff disease presented with pure lower motor neuron phenotype. Twenty years later, he showed signs of upper motor neuron involvement. 25 years from the onset, his muscle weakness slightly worsened but he was fully independent in activities of daily living. GM2-gangliosidosis can
Here, we report a Japanese man with adult Sandhoff disease who presented with a motor neuron disease phenotype with slow progression. At the age of 42, he noticed weakness in his legs. At the age of 46, he was admitted to our hospital. Neurological examination revealed muscle weakness and atrophy of
Progressive proximal muscle weakness is present both in spinal muscular atrophy (SMA) type III (Kugelberg-Welander disease) and in GM2 gangliosidosis, diseases that segregate in an autosomal recessive fashion. The SMN gene for SMA and the HEXA gene for GM2 gangliosidosis were investigated in a woman
A 12 year-old female presented with a seven-year history of progressive muscle weakness, atrophy, tremor and fasciculations. Cognition was normal. Rectal biopsy revealed intracellular storage material and biochemical testing indicated low hexosaminidase activity consistent with juvenile-onset
Sphingolipidoses are an heterogeneous group of inherited disorders of lipid metabolism affecting primarily the central nervous system. These disorders occur chiefly in the pediatric population, and the degenerative nature of the disease processes is generally characterized by diffuse and progressive
A 32 year old male is described with an onset of upper limb postural tremor in adolescence followed by muscle cramps. Progressive proximal amyotrophy and weakness in the limbs developed late in the third decade. Examination disclosed, in addition, bilateral facial weakness and mild dysarthria.
We report a case of lysosomal storage disease diagnosed by lysosomal enzyme assay in a two year old boy with a history of gradual onset of weakness of body, poor vision, flaccid neck and spasticity in all four limbs with hyper-reflexia. On fundus examination cherry red spots were noted at macula. On
Several forms of genetically defined juvenile amy-otrophic lateral sclerosis (ALS) have now been charac-terized and discussion of these conditions will form the basis for this chapter. ALS2 is an autosomal recessive form of ALS with a juvenile onset and very slow progression that mapped to
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