Evidence map›Paper›PMID 37784209›Full record

ArticleActa neuropathologica communications2023

Higher angiotensin-converting enzyme 2 (ACE2) levels in the brain of individuals with Alzheimer's disease.

Louise Reveret, Manon Leclerc, Vincent Emond, Cyntia Tremblay, Andréanne Loiselle, Philippe Bourassa, David A Bennett, Sébastien S Hébert, Frédéric Calon

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Acta neuropathologica communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
9.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 39 citations in OpenAlex.

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  4. Microglial activation and RAS signaling: a dual-edged sword in neuroinflammation.American journal of physiology. Regulatory, integrative and comparative physiology · 2026
    Review
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  6. ACE2: Friend or Foe in Post-COVID-19 Neurodegeneration?International journal of molecular sciences · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Louise ReveretFaculty of Pharmacy, Laval University, Quebec, QC, Canada.
Manon LeclercFaculty of Pharmacy, Laval University, Quebec, QC, Canada.
Vincent EmondCHU de Quebec Research Center, 2705, Boulevard Laurier, Room T2-05, Québec, QC, G1V 4G2, Canada.
Cyntia TremblayCHU de Quebec Research Center, 2705, Boulevard Laurier, Room T2-05, Québec, QC, G1V 4G2, Canada.
Andréanne LoiselleCHU de Quebec Research Center, 2705, Boulevard Laurier, Room T2-05, Québec, QC, G1V 4G2, Canada.
Philippe BourassaFaculty of Pharmacy, Laval University, Quebec, QC, Canada.
David A BennettRush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
Sébastien S HébertCHU de Quebec Research Center, 2705, Boulevard Laurier, Room T2-05, Québec, QC, G1V 4G2, Canada.
Frédéric CalonFaculty of Pharmacy, Laval University, Quebec, QC, Canada. Frederic.calon@pha.ulaval.ca.ORCID http://orcid.org/0000-0002-4203-0887
Centre hospitalier universitaire de Québec · CARush University Medical Center · US

Funding

BRAIN-ICU-2 Study: Bringing to Light the Risk Factors And Incidence of Neuropsychological Dysfunction (Dementia) in ICU Survivors, 2nd StudyR01AG058639 · NIA · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ELY, E WESLEY, JEFFERSON, ANGELA L. · 2019 to 2024
$18.3M
NIA NIH HHS R01 AG058639
6 · The paper itself

Abstract

Cognitive decline due to Alzheimer's disease (AD) is frequent in the geriatric population, which has been disproportionately affected by the COVID-19 pandemic. In this study, we investigated the levels of angiotensin-converting enzyme 2 (ACE2), a regulator of the renin-angiotensin system and the main entry receptor of SARS-CoV-2 in host cells, in postmortem parietal cortex samples from two independent AD cohorts, totalling 142 persons. Higher concentrations of ACE2 protein (p < 0.01) and mRNA (p < 0.01) were found in individuals with a neuropathological diagnosis of AD compared to age-matched healthy control subjects. Brain levels of soluble ACE2 were inversely associated with cognitive scores (p = 0.02) and markers of pericytes (PDGFRβ, p = 0.02 and ANPEP, p = 0.007), but positively correlated with concentrations of soluble amyloid-β peptides (Aβ) (p = 0.01) and insoluble phospho-tau (S396/404, p = 0.002). However, no significant differences in ACE2 were observed in the 3xTg-AD mouse model of tau and Aβ neuropathology. Results from immunofluorescence and Western blots showed that ACE2 protein is predominantly localized in microvessels in the mouse brain whereas it is more frequently found in neurons in the human brain. The present data suggest that higher levels of soluble ACE2 in the human brain may contribute to AD, but their role in CNS infection by SARS-CoV-2 remains unclear.

Indexed as

Alzheimer DiseaseCOVID-19AgedAngiotensin-Converting Enzyme 2AnimalsBrainHumansMicePandemicsSARS-CoV-2Angiotensin-Converting Enzyme 2ACE2Alzheimer’s diseaseBlood–brain barrierCognitive dysfunctionNeuropathology

Identifiers

PMID37784209
PMCPMC10544218
OpenAlexW4387258701

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.