Journal
MECHANISMS OF AGEING AND DEVELOPMENT
Volume 127, Issue 2, Pages 217-220Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.mad.2005.09.010
Keywords
homozygous Huntington disease; mitochondrial changes; biomarkers
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Mutated huntingtin is expressed in nervous and non nervous system included lymphoblasts. Eneregetic metabolism is impaired in Huntington's disease (HD) and other neurodegenerative diseases. Human HD lymphoblasts have provided clear-cut data on mitochondnal disruption. Here we report morphological, morphometric and membrane potential differences in mitochondria from lymphoblasts obtained from patients homozygous and heterozygous for the CAG mutation, and controls. Homozygotes, who despite a similar age at onset show a more aggressive phenotype than heterozygotes, had giant mitochondria and a reduced membrane potential. We argue that early mitochondrial impairment at basal level may affect the severity of HD progression in patients. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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