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Cerebral microbleeds are associated with physical frailty: a community-based study
Chih-Ping Chung1, Kun-Hsien Chou2, Wei-Ta Chen3
1Department of Neurology, School of Medicine, National Yang Ming University, Taipei, Taiwan; Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan.
Neurobiology of Aging
|June 19, 2016
Summary
Cerebral microbleeds (CMBs), a marker of small vessel disease, are linked to physical frailty in older adults. This finding suggests a role for cerebral small vessel diseases (CSVDs) in the development of frailty.
Area of Science:
- Neurology
- Gerontology
- Vascular Medicine
Background:
- Physical frailty is a growing concern in aging populations.
- Cerebral small vessel diseases (CSVDs) are common in older adults and affect brain health.
- Cerebral microbleeds (CMBs) are a key imaging marker of CSVDs.
Purpose of the Study:
- To investigate the association between cerebral microbleeds (CMBs) and physical frailty.
- To explore if CSVDs contribute to the development of physical frailty.
Main Methods:
- Cross-sectional study of 962 community-dwelling older adults from the I-Lan Longitudinal Aging Study.
- Physical frailty assessed using the Cardiovascular Health Study score (weakness, low activity, slowness, exhaustion, weight loss).
- CMBs detected via magnetic resonance imaging (MRI) using susceptibility-weighted imaging.
Main Results:
- 36.5% of participants were prefrail or frail.
- Pre/frail individuals had more CMBs overall and in deep/infratentorial regions compared to robust individuals.
- CMB counts were significantly associated with physical frailty, particularly in the brainstem, independent of confounders.
Conclusions:
- Cerebral small vessel disease (CSVD) is implicated in the pathophysiology of physical frailty.
- Brainstem CMBs are specifically linked to physical frailty and the weakness component.
- Findings highlight the neurological underpinnings of age-related physical decline.
