Changes in cerebral arterial pulsatility and hippocampal volume: a transcranial doppler ultrasonography study.
Neurobiol Aging
; 108: 110-121, 2021 12.
Article
em En
| MEDLINE
| ID: mdl-34555677
ABSTRACT
The physiological mechanisms of age-related cognitive decline remain unclear, in no small part due to the lack of longitudinal studies. Extant longitudinal studies focused on gross neuroanatomy and diffusion properties of the brain. We present herein a longitudinal analysis of changes in arterial pulsatility - a proxy for arterial stiffness - in two major cerebral arteries, middle cerebral and vertebral. We found that pulsatility increased in some participants over a relatively short period and these increases were associated with hippocampal shrinkage. Higher baseline pulsatility was associated with lower scores on a test of fluid intelligence at follow-up. This is the first longitudinal evidence of an association between increase in cerebral arterial stiffness over time and regional shrinkage.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fluxo Pulsátil
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Envelhecimento
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Artérias Cerebrais
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Ultrassonografia Doppler Transcraniana
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Disfunção Cognitiva
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Rigidez Vascular
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Envelhecimento Cognitivo
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Hipocampo
Tipo de estudo:
Etiology_studies
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Observational_studies
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Risk_factors_studies
Limite:
Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article