Evidence map›Paper›PMID 39179782›Full record

ArticleCommunications biology2024

Disrupted brain functional connectivity as early signature in cognitively healthy individuals with pathological CSF amyloid/tau.

Abdulhakim Al-Ezzi, Rebecca J Arechavala, Ryan Butler, Anne Nolty, Jimmy J Kang, Shinsuke Shimojo, Daw-An Wu, Alfred N Fonteh, Michael T Kleinman, Robert A Kloner and 1 more

Abstract read
In one paragraph

Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

24 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Excitation-inhibition homeostasis in Alzheimer's disease: a selective multiscale review of mechanisms, sex differences, and therapeutic opportunities.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Abdulhakim Al-EzziDepartment of Neurosciences, Huntington Medical Research Institutes, Pasadena, CA, USA. hakim.alezzi@hmri.org.
Rebecca J ArechavalaDepartment of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, CA, USA.ORCID 0000-0002-9799-2610
Ryan ButlerDepartment of Neurosciences, Huntington Medical Research Institutes, Pasadena, CA, USA.
Anne NoltyFuller Theological Seminary, Pasadena, CA, USA.
Jimmy J KangThe Hill Medical Corporation, Pasadena, CA, USA.
Shinsuke ShimojoThe Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.ORCID 0000-0002-1290-5232
Daw-An WuThe Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.ORCID 0000-0003-4296-3369
Alfred N FontehDepartment of Neurosciences, Huntington Medical Research Institutes, Pasadena, CA, USA.
Michael T KleinmanDepartment of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, CA, USA.
Robert A KlonerDepartment of Neurosciences, Huntington Medical Research Institutes, Pasadena, CA, USA.
Xianghong ArakakiDepartment of Neurosciences, Huntington Medical Research Institutes, Pasadena, CA, USA. xianghong.arakaki@hmri.org.

Funding

Cognitive challenge to reveal systemic neurophysiology biomarkers in pre-symptomatic Alzheimer’s diseaseR01AG063857 · NIA · HUNTINGTON MEDICAL RESEARCH INSTITUTES · PI ARAKAKI, XIANGHONG, KLONER, ROBERT A · 2021 to 2025
$3.8M
Cognitive challenge to reveal presymptomatic Alzheimer's diseaseR56AG063857 · NIA · HUNTINGTON MEDICAL RESEARCH INSTITUTES · PI ARAKAKI, XIANGHONG, HARRINGTON, MICHAEL GORDON · 2019 to 2019
$513k
NIA NIH HHS R01 AG063857NIA NIH HHS R56 AG063857U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging) R56AG063857 and R01AG063857
6 · The paper itself

Abstract

Alterations in functional connectivity (FC) have been observed in individuals with Alzheimer's disease (AD) with elevated amyloid (Aβ) and tau. However, it is not yet known whether directed FC is already influenced by Aβ and tau load in cognitively healthy (CH) individuals. A 21-channel electroencephalogram (EEG) was used from 46 CHs classified based on cerebrospinal fluid (CSF) Aβ tau ratio: pathological (CH-PAT) or normal (CH-NAT). Directed FC was estimated with Partial Directed Coherence in frontal, temporal, parietal, central, and occipital regions. We also examined the correlations between directed FC and various functional metrics, including neuropsychology, cognitive reserve, MRI volumetrics, and heart rate variability between both groups. Compared to CH-NATs, the CH-PATs showed decreased FC from the temporal regions, indicating a loss of relative functional importance of the temporal regions. In addition, frontal regions showed enhanced FC in the CH-PATs compared to CH-NATs, suggesting neural compensation for the damage caused by the pathology. Moreover, CH-PATs showed greater FC in the frontal and occipital regions than CH-NATs. Our findings provide a useful and non-invasive method for EEG-based analysis to identify alterations in brain connectivity in CHs with a pathological versus normal CSF Aβ/tau.

Indexed as

Amyloid beta-PeptidesBrainElectroencephalographytau ProteinsAgedAlzheimer DiseaseCognitionFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedAmyloid beta-Peptidestau Proteins

Identifiers

PMID39179782
PMCPMC11344156

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.