Decreased hemoglobin levels, cerebral small-vessel disease, and cortical atrophy: among cognitively normal elderly women and men
- Authors
- Park, Sang Eon; Kim, Hojeong; Lee, Jeongmin; Lee, Na Kyung; Hwang, Jung Won; Yang, Jin-ju; Ye, Byoung Seok; Cho, Hanna; Kim, Hee Jin; Kim, Yeo Jin; Jung, Na-Yeon; Son, Tae Ok; Cho, Eun Bin; Jang, Hyemin; Jang, Eun Young; Hong, Chang Hyung; Lee, Jong Min; Kang, Mira; Shin, Hee-Young; Na, Duk L.; Seo, Sang Won
- Issue Date
- Jan-2016
- Publisher
- CAMBRIDGE UNIV PRESS
- Keywords
- anemia; cerebral small-vessel disease (CSVD); cortical thickness; dementia
- Citation
- INTERNATIONAL PSYCHOGERIATRICS, v.28, no.1, pp.147 - 156
- Indexed
- SCIE
SSCI
SCOPUS
- Journal Title
- INTERNATIONAL PSYCHOGERIATRICS
- Volume
- 28
- Number
- 1
- Start Page
- 147
- End Page
- 156
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155305
- DOI
- 10.1017/S1041610215000733
- ISSN
- 1041-6102
- Abstract
- Background: Decreased hemoglobin levels increase the risk of developing dementia among the elderly. However, the underlying mechanisms that link decreased hemoglobin levels to incident dementia still remain unclear, possibly due to the fact that few studies have reported on the relationship between low hemoglobin levels and neuroimaging markers. We, therefore, investigated the relationships between decreased hemoglobin levels, cerebral small-vessel disease (CSVD), and cortical atrophy in cognitively healthy women and men. Methods: Cognitively normal women (n = 1,022) and men (n = 1,018) who underwent medical check-ups and magnetic resonance imaging (MRI) were enrolled at a health promotion center. We measured hemoglobin levels, white matter hyperintensities (WMH) scales, lacunes, and microbleeds. Cortical thickness was automatically measured using surface based methods. Multivariate regression analyses were performed after controlling for possible confounders. Results: Decreased hemoglobin levels were not associated with the presence of WMH, lacunes, or microbleeds in women and men. Among women, decreased hemoglobin levels were associated with decreased cortical thickness in the frontal (Estimates, 95% confidence interval, -0.007, (-0.013, -0.001)), temporal (-0.010, (-0.018, -0.002)), parietal (-0.009, (-0.015, -0.003)), and occipital regions (-0.011, (-0.019, -0.003)). Among men, however, no associations were observed between hemoglobin levels and cortical thickness. Conclusion: Our findings suggested that decreased hemoglobin levels affected cortical atrophy, but not increased CSVD, among women, although the association is modest. Given the paucity of modifiable risk factors for age-related cognitive decline, our results have important public health implications.
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