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[The relationship between cerebral white matter changes, mental function and blood pressure in normal elderly]
K Yamashita1, S Kobayashi, H Fukuda
1Third Division of Internal Medicine, Shimane Medical University.
Summary
In normal elderly individuals, white matter changes in the brain do not affect mental function. However, frontal white matter lesions are associated with mean arterial blood pressure.
Area of Science:
- Neurology
- Neuroimaging
- Gerontology
Context:
- Aging is associated with changes in brain structure, including white matter.
- Cerebral white matter changes are detectable via MRI and may impact cognitive function.
- Understanding these changes in neurologically normal older adults is crucial for distinguishing normal aging from pathology.
Purpose:
- To investigate the relationship between cerebral white matter changes and cognitive function in healthy older adults.
- To explore the association between white matter integrity and blood pressure levels in the elderly.
- To determine if age-related white matter alterations correlate with cognitive performance or cardiovascular health.
Summary:
- This study analyzed 39 neurologically normal older adults (mean age 75.0 years) using MRI to assess white matter changes and cognitive tests (Hasegawa's dementia rating scale, Kohs' block design test).
- Cerebral frontal white matter changes showed a significant increase with age.
- No significant correlation was found between white matter changes and cognitive function, but frontal white matter lesions were significantly correlated with mean arterial blood pressure.
Impact:
- Findings suggest that white matter changes in normal aging may not impair cognitive function.
- The correlation between frontal white matter lesions and mean arterial blood pressure highlights a potential link between cardiovascular health and brain aging.
- This research contributes to understanding the factors influencing brain health in the elderly population.