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  • Title: Characterising the neuropathology and neurobehavioural phenotype in Friedreich ataxia: a systematic review.
    Author: Corben LA, Georgiou-Karistianis N, Bradshaw JL, Evans-Galea MV, Churchyard AJ, Delatycki MB.
    Journal: Adv Exp Med Biol; 2012; 769():169-84. PubMed ID: 23560311.
    Abstract:
    Friedreich ataxia (FRDA), the most common of the hereditary ataxias, is an autosomal recessive, multisystem disorder characterised by progressive ataxia, sensory symptoms, weakness, scoliosis and cardiomyopathy. FRDA is caused by a GAA expansion in intron one of the FXN gene, leading to reduced levels of the encoded protein frataxin, which is thought to regulate cellular iron homeostasis. The cerebellar and spinocerebellar dysfunction seen in FRDA has known effects on motor function; however until recently slowed information processing has been the main feature consistently reported by the limited studies addressing cognitive function in FRDA. This chapter will systematically review the current literature regarding the neuropathological and neurobehavioural phenotype associated with FRDA. It will evaluate more recent evidence adopting systematic experimental methodologies that postulate that the neurobehavioural phenotype associated with FRDA is likely to involve impairment in cerebello-cortico connectivity.
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