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Glycogenosis type VIII
Journal of Neuropathology and Experimental Neurology
|November 1, 1984
Summary
Glycogenosis Type VIII, a rare neurological disorder, involves glycogen accumulation in the brain. This report details the first complete autopsy, revealing significant brain atrophy and axonal storage.
Area of Science:
- Neurology
- Biochemistry
- Pathology
Background:
- Glycogenosis Type VIII (cerebral alpha-particle glycogenosis) is an exceedingly rare metabolic disorder.
- Characterized by glycogen accumulation in the central nervous system, only two prior cases are documented.
- This study presents the first complete autopsy of a patient with this condition.
Observation:
- The patient, a 20-year-old female, exhibited prolonged survival and potential familial incidence, clinically unique features.
- Gross pathology revealed severe brain atrophy with preserved cortical mantle thickness.
- Histological examination showed extensive neuropil vacuolation, particularly in the striatum.
Findings:
- Biochemical analysis confirmed markedly elevated glycogen levels in the striatum (50-fold) and cerebral cortex (8-fold).
- Ultrastructural and Golgi studies indicated glycogen primarily stored in distal axons.
- Additional findings included spheroids and significant lipofuscin accumulation, likely secondary to the prolonged illness.
Implications:
- This case expands the understanding of Glycogenosis Type VIII's pathological features and clinical spectrum.
- The findings highlight the distal axon as a key site of pathology in this disorder.
- Further research may elucidate the mechanisms behind spheroid and lipofuscin accumulation in prolonged neurodegenerative conditions.