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    Ann Neurol. 2004 Sep;56(3):448-52.

    Ataxin-7 aggregation and ubiquitination in infantile SCA7 with 180 CAG repeats.

    Ansorge O, Giunti P, Michalik A, Van Broeckhoven C, Harding B, Wood N, Scaravilli F.

    Division of Neuropathology, Institute of Neurology, Queen Square, London, United Kingdom. olaf.ansorge@clneuro.ox.ac.uk

    Extremely long (>150) CAG repeats are often used to create models of polyglutamine diseases yet are very rare in humans where they manifest as pediatric multisystem syndromes of little specificity. Here, we describe an infant with 180 CAG repeats in the spinocerebellar ataxia type 7 gene and focus on systemic ataxin-7 aggregation. This was found in many organs, including the cardiovascular system. In the brain, the hippocampus emerged as a principal site of ataxin-7 aggregation without cell loss. We note differential ubiquitination of aggregates and discuss how this may relate to selective vulnerability.

    PMID: 15349877 [PubMed - indexed for MEDLINE]

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