Giant axonal neuropathy is characterized by large masses of filaments in neurons and other cells. Coomassie blue staining of the detergent-resistant cytoskeleton of cultured fibroblasts from three patients revealed cytoplasmic masses with the characteristics of aggregates of intermediate (8- to 10-nm) filaments. These fibroblast abnormalities provide definitive evidence for a genetic etiology of this disease and may be useful for prenatal diagnosis and for investigations of pathogenesis.
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Sérgio D.J. Pena (1981) studied this question.