J Neurol Sci
Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK.
Published: July 2012
The relative frequency of different autosomal dominant cerebellar ataxias, commonly referred to as spinocerebellar ataxias (SCAs), varies considerably among populations of different ethnic origin. No data exist at present on the frequency of different SCAs in the Greek population. In the present study we investigated the presence of triplet repeat expansion SCAs (SCA1, SCA2, SCA3, SCA6, SCA7, SCA8, SCA12, SCA17 and DRPLA) in a cohort of 83 Greek patients with slowly progressive cerebellar ataxia. Twenty patients came from autosomal dominant (AD) pedigrees, seven displayed recessive or unclear inheritance and 56 were sporadic. We found four patients with pathological SCA expansions, all from AD pedigrees. Two patients had SCA1, one SCA2 and one SCA7 (10.0, 5.0 and 5.0% of the AD group, respectively). The clinical features of these patients were within the expected spectrum. In total, a pathological expansion was detected in 20% of patients from AD pedigrees. Interestingly, no cases of SCA3 or SCA6 were detected in the AD group. No expansions were found in other familial cases or in sporadic patients. Overall, no cases of SCA3, SCA6, SCA12, SCA17 or DRPLA were identified in the Greek population. In conclusion, SCA1, SCA2 and SCA7 are present in Greek patients with AD cerebellar ataxia in frequencies similar to those observed in other populations. SCA3 and SCA6 appear however to be rare in Greece. The genetic cause for the majority of AD ataxias remains to be identified.
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http://dx.doi.org/10.1016/j.jns.2012.03.019 | DOI Listing |
J Neurol
December 2024
Faculdade de Ciências Médicas da UNICAMP, Departamento de Neurologia da FCM/UNICAMP, Department of Neurology, Universidade Estadual de Campinas, University of Campinas, Cidade Universitária s/n Caixa Postal, 6111 Barão Geraldo, 13083970, Campinas, SP, Brasil.
Background: Spinocerebellar ataxias (SCAs) are a group of neurodegenerative disorders characterized by progressive ataxia. Although previous studies have focused on cerebral and cerebellar damage, spinal cord involvement in SCAs remains underexplored.
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J Neurol Sci
December 2024
Neurogenetics Unit, 1st Department of Neurology, National and Kapodistrian University of Athens, Eginitio Hospital, Athens, Greece. Electronic address:
Objective: Late-onset cerebellar ataxia (LOCA) is a slowly progressive cerebellar disorder with symptom onset ≥30years of age. Intronic tandem repeat expansions (TREs) in RFC1 and FGF14 have recently emerged as common causes of LOCA. The relative contribution of classic vs.
View Article and Find Full Text PDFCerebellum
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Initiative for Columbia Ataxia and Tremor, Columbia University, New York, NY, USA.
Under stress, Purkinje cells (PCs) undergo a variety of reactive morphological changes. These can include swellings of neuronal processes. While axonal swellings, "torpedoes", have been well-studied, dendritic swellings (DS) have not been the centerpiece of study.
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July 2024
Sorbonne Université, Paris Brain Institute - ICM, Inserm, CNRS, Inria, AP-HP, Paris, France.
Mov Disord Clin Pract
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Department of Neurology, Columbia University Medical Center, New York, New York, USA.
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