Cited by 132Intracerebral and Subarachnoid Hemorrhage ResearchDementia and Cognitive Impairment ResearchCerebrovascular and genetic disorders

Cerebral Microbleeds: Different Prevalence, Topography, and Risk Factors Depending on Dementia Diagnosis—The Karolinska Imaging Dementia Study

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Shams, S., Martola, J., Granberg, T., Li, X., Shams, M., Fereshtehnejad, S.M., Cavallin, L., Aspelin, P. +2 more·2015·American Journal of Neuroradiology

Abstract

BACKGROUND AND PURPOSE: Cerebral microbleeds are thought to represent cerebral amyloid angiopathy when in lobar regions of the brain and hypertensive arteriopathy when in deep and infratentorial locations. By studying cerebral microbleeds, their topography, and risk factors, we aimed to gain an insight into the vascular and amyloid pathology of dementia diagnoses and increase the understanding of cerebral microbleeds in dementia. MATERIALS AND METHODS: We analyzed 1504 patients (53% women; mean age, 63 ± 10 years; 10 different dementia diagnoses) in this study. All patients underwent MR imaging as part of the dementia investigation, and all their clinical parameters were recorded. RESULTS: Among the 1504 patients with dementia, 22% had cerebral microbleeds. Cerebral microbleed topography was predominantly lobar (P = .01) and occipital (P = .007) in Alzheimer disease. Patients with cerebral microbleeds were significantly older (P < .001), were more frequently male (P < .001), had lower cognitive scores (P = .006), and more often had hypertension (P < .001). Risk factors for cerebral microbleeds varied depending on the dementia diagnosis. Odds ratios for having cerebral microbleeds increased with the number of risk factors (hypertension, hyperlipidemia, diabetes, male sex, and age 65 and older) in the whole patient group and increased differently in the separate dementia diagnoses. CONCLUSIONS: Prevalence, topography, and risk factors of cerebral microbleeds vary depending on the dementia diagnosis and reflect the inherent pathology of different dementia diagnoses. Because cerebral microbleeds are seen as possible predictors of intracerebral hemorrhage, their increasing prevalence with an increasing number of risk factors, as shown in our study, may require taking the number of risk factors into account when deciding on anticoagulant therapy in dementia.

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  • CNS microbleeds reflect loss of cerebrovascular integrity and are found in 25% of individuals with MCI and 45-78% of individuals with early AD without dementia.

    “CNS microbleeds reflect loss of cerebrovascular integrity and are found in 25% of individuals with MCI (669) and 45-78% of individuals with early AD without dementia (83, 208, 246, 452, 476, 529, 604, 702).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [529]

    The Prevalence section reports cerebral microbleeds in the study cohort, and the Discussion table includes patients with mild cognitive impairment. But the table’s counts total 89 of 418 patients with MCI (about 21%), not the 25% attributed to this source. The 45–78% figure is attached to other citations and is not assessed here. (LLM, conf=0.86)

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Authors
Shams, S., Martola, J., Granberg, T., Li, X., Shams, M., Fereshtehnejad, S. M., Cavallin, L., Aspelin, P., Kristoffersen-Wiberg, M., & Wahlund, L. O.
Affiliations
  • Karolinska Institutet (SE)
  • Karolinska University Hospital (SE)
Venue
American Journal of Neuroradiology
Published
2014-12-18
Volume
36
Issue
4
Pages
661-666
ISSN
  • 0195-6108 (ISSN-L)
  • 1936-959X
OpenAlex
W2130583999
Cited by
132
References
36
Citations by year
2026: 3 · 2025: 11 · 2024: 6 · 2023: 6 · 2022: 16 · 2021: 15 · 2020: 13 · 2019: 12 · 2018: 13 · 2017: 13 · 2016: 13 · 2015: 11
FWCI
8.04
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • American Journal of Neuroradiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Karolinska Institutet
  • Stockholms Läns Landsting
Topics
  • Health Sciences › Medicine › Neurology › Intracerebral and Subarachnoid Hemorrhage Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Neurology › Cerebrovascular and genetic disorders
Keywords
cerebral microbleeds, dementia, Alzheimer's disease, cerebral amyloid angiopathy, hypertensive arteriopathy, risk factors, hypertension, intracerebral hemorrhage, anticoagulation, vascular pathology
MeSH terms
Aged, Aged, 80 and over, Brain, Cerebral Hemorrhage, Dementia, Female, Humans, Magnetic Resonance Imaging, Male, Risk Factors, Prevalence

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