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[Executive dysfunction in Huntington's disease]
L Redondo Vergé1, R G Brown, J Chacón
1Servicio de Neurología; Hospital Virgen de la Macarena, Sevilla, España. lredondov@meditex.es
Revista De Neurologia
|June 26, 2001
Summary
Patients with Huntington's disease (HD) exhibit executive dysfunction, impacting attention and working memory. This cognitive decline is likely linked to fronto-striatal circuit dysfunction.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Science
Context:
- Huntington's disease (HD) involves selective striatal neuron vulnerability.
- Cortico-striatal circuits, particularly those involving the dorsolateral prefrontal cortex, are implicated in cognitive functions.
- Early HD stages show cellular changes potentially leading to cognitive deficits.
Purpose:
- To analyze and interpret executive dysfunction in moderately advanced Huntington's disease patients.
- To investigate the cognitive impact of fronto-striatal circuit alterations in HD.
- To assess specific cognitive domains affected in HD.
Summary:
- 16 patients with Huntington's disease (HD) and controls were evaluated using clinical and cognitive scales (UHDRS, independence scale, total functional capacity, CAPIT-HD).
- HD patients demonstrated significant deterioration in cognitive function, attention, and working memory tests.
- Exceptions were noted in the WEST and direct order digit span tests.
Impact:
- Confirms executive dysfunction in Huntington's disease (HD) patients.
- Suggests fronto-striatal cognitive dysfunction as the most accurate descriptor for HD-related cognitive deterioration.
- Highlights the role of cortico-striatal circuit dysfunction in HD pathogenesis.