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Published on: May 16, 2017
Glutamyl ribose-5-phosphate storage disease: nephrotic syndrome and cerebral atrophy
Abstract:
Storage of glutamyl ribose-5-phosphate was identified at autopsy in the brain and kidney of an 8-year-old male who had presented clinically with progressive renal failure and neurological deterioration. In a renal biopsy during life, glomeruli were focally sclerotic and contained foam cells. By electron microscopy, lysosomal accumulation was present in renal tubular and glomerular epithelial cells, hepatic Kupffer cells, and conjunctival connective tissue cells. Ganglion cells in the brain stem had swollen, PAS-positive cytoplasm with central chromatolysis. The cerebral cortex was atrophic and there was loss of Purkinje cells in the cerebellum. The identification of storage was based on biochemical isolation of the compound from the tissues at autopsy. The enzyme deficiency responsible for the storage has not yet been identified.
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