Cognitive phenotype in ataxia-telangiectasia.
Pediatr Neurol
; 51(3): 297-310, 2014 Sep.
Article
em En
| MEDLINE
| ID: mdl-25037873
ABSTRACT
BACKGROUND:
Pediatric cerebrocerebellar neurodegenerative disorders such as ataxia-telangiectasia (AT) have not been examined in detail for neuropsychologic changes. Such studies may contribute to the further understanding of ataxia-telangiectasia and to the role of the cerebrocerebellar system in the development of cognitive function in childhood.METHODS:
Twenty-two patients with the classic phenotype of ataxia-telangiectasia were grouped into early stage cerebellar disease (group AT-I) versus late stage cerebrocerebellar disease (group AT-II) and examined for neurocognitive features. Results were compared with those of healthy control subjects and with standard norms.RESULTS:
Patients in AT-I group scored low average compared with standard norms on all tests and were impaired compared with healthy control subjects for verbal intelligence quotient (P < 0.001), vocabulary and comprehension (P = 0.007), processing speed (P = 0.005), visuospatial processing (P = 0.020), and working memory (P = 0.046). Patients in AT-II group scored below average compared with standard norms on all tests and were impaired compared with control subjects for attention (P < 0.001), working memory (P < 0.001), and abstract reasoning (P < 0.001). Comprehension scores were lower for patients in AT-II than in AT-I group (P = 0.002), whereas vocabulary scores showed no difference between groups (P = 0.480).CONCLUSION:
Cognitive impairments in ataxia-telangiectasia present early, coinciding with cerebellar pathology and are characteristic of the cerebellar cognitive affective syndrome. Widespread and deeper cognitive deficits manifest in later stages of ataxia-telangiectasia when additional noncerebellar pathology develops. These results are the first indications of distinct cerebellar and extracerebellar and/or subcortical contributions to the range of cognitive domains affected in ataxia-telangiectasia and need to be confirmed in future studies.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ataxia Telangiectasia
/
Cognição
Tipo de estudo:
Observational_studies
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Risk_factors_studies
Limite:
Adolescent
/
Adult
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Child
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Revista:
Pediatr Neurol
Ano de publicação:
2014
Tipo de documento:
Article