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  • Title: SCA1 patients may present as hereditary spastic paraplegia and must be included in spastic-ataxias group.
    Author: Pedroso JL, de Souza PV, Pinto WB, Braga-Neto P, Albuquerque MV, Saraiva-Pereira ML, Jardim LB, Barsottini OG.
    Journal: Parkinsonism Relat Disord; 2015 Oct; 21(10):1243-6. PubMed ID: 26231471.
    Abstract:
    INTRODUCTION: The combination of cerebellar ataxia and spasticity is common. However, autosomal dominant genetic diseases presenting with spastic-ataxia are a smaller group. Pyramidal signs have been frequently observed in several SCA subtypes, particularly in spinocerebellar ataxia type 1. METHODS: We prospectively evaluated the pyramidal signs and spasticity in SCA1 patients, and correlated the data with genetic and clinical features. RESULTS: In this study, we observed that spasticity may be an early and presenting feature of SCA1, since 3 patients had pyramidal signs and spasticity as the first neurological sign. SCA1 patients with spasticity were significantly younger. CONCLUSION: SCA1 may rarely present with pure spastic paraplegia, resembling hereditary spastic paraplegia, before the appearance of cerebellar signs. This observation may confuse the neurologist when a genetic testing is requested for an autosomal dominant spastic paraplegia, directing research to hereditary spastic paraplegia group.
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