Association between Age and Striatal Volume Stratified by CAG Repeat Length in Prodromal Huntington Disease

Background: Longer CAG repeat length is associated with faster clinical progression in Huntington disease, although the effect of higher repeat length on brain atrophy is not well documented. Method: Striatal volumes were obtained from MRI scans of 720 individuals with prodromal Huntington disease....

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Detalles Bibliográficos
Autores principales: Aylward, Elizabeth, Mills, James, Liu, Dawei, Nopoulos, Peggy, Ross, Christopher A., Pierson, Ronald, Paulsen, Jane S.
Formato: Texto
Lenguaje:English
Publicado: Public Library of Science 2011
Materias:
Huntington Disease
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3092625/
https://www.ncbi.nlm.nih.gov/pubmed/21593963
http://dx.doi.org/10.1371/currents.RRN1235
Descripción
Sumario:Background: Longer CAG repeat length is associated with faster clinical progression in Huntington disease, although the effect of higher repeat length on brain atrophy is not well documented. Method: Striatal volumes were obtained from MRI scans of 720 individuals with prodromal Huntington disease. Striatal volume was plotted against age separately for groups with CAG repeat lengths of 38–39, 40, 41, 42, 43, 44, 45, 46, and 47–54. Results: Slopes representing the association between age and striatal volume were significantly steeper as CAG repeat length increased. Discussion: Although cross-sectional, these data suggest that striatal atrophy, like clinical progression, may occur faster with higher CAG repeat lengths.

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