SOD1 mutation is associated with accumulation of neurofilaments in amyotrophic lateral sclerosis.

Rouleau, G A; Clark, A W; Rooke, K; Pramatarova, A; Krizus, A; Suchowersky, O; Julien, J P; Figlewicz, D · Ann Neurol · 1996

case_report · Level V

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Abstract

Mutations in the Cu/Zn superoxide dismutase (SOD1) gene are found in 15 to 20% of patients with familial amyotrophic lateral sclerosis (FALS). Increased levels of neurofilament subunits in transgenic mouse models of ALS also suggests a key role for these proteins in the pathogenesis of the disease. We report the coexistence of an Ile113-->Thr substitution in exon 4 of the SOD1 gene and marked neurofilamentous pathology in the same FALS patient. These observations suggest that two mechanisms, SOD1-induced toxicity and neurofilament disruption, are acting together.

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