Association of lewy bodies, hippocampal sclerosis and amyloid angiopathy with dementia in community-dwelling elderly: A systematic review and meta-analysis

Abolfazl Avan, Amin Amiri, Naghmeh Mokhber, Mahdiyeh Erfanian, Lauren E. Cipriano, Saverio Stranges, Golnaz Shojaeian babaei, Shahram Abootalebi, M. Reza Azarpazhooh*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Introduction: We measured the proportion of Lewy body pathology (LB), hippocampal sclerosis (HS), and cerebral amyloid angiopathy (CAA) among community-dwelling people with and without dementia. Methods: We searched for community-based cohorts with postmortem brain autopsy until 1 January 2020. We calculated the summary risk difference and 95% confidence interval (95% CI) using a random-effects model in R. Results: We found 12 articles, comprising 2197 demented and 2104 non-demented participants. LB, HS, CAA were prevalent lesions among community-dwelling elderly (15%, 10%, and 24%, respectively). These significantly increased the risk of dementia (LB: risk difference 38%, 95% CI 20–56%, HS: 34%, 24–44%, CAA: 19%, 3–34%). 20% of cases with neocortical LB, 17% with bilateral HS, and 42% with moderate/severe CAA pathology remained non-demented by death. Discussion: LB or HS or CAA are common neuropathologies among community-dwelling elderly. Although these lesions independently are associated with dementia, many remain non-demented, by death.

Original languageEnglish
Pages (from-to)124-131
Number of pages8
JournalJournal of Clinical Neuroscience
Volume90
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Cerebral amyloid angiopathy
  • Community-dwelling elderly
  • Dementia
  • Hippocampal sclerosis
  • Lewy body
  • Prevalence

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