Evidence map›Paper›PMID 31970820›Full record

ArticleNeuropathology and applied neurobiology2020

Brain mural cell loss in the parietal cortex in Alzheimer's disease correlates with cognitive decline and TDP-43 pathology.

P Bourassa, C Tremblay, J A Schneider, D A Bennett, F Calon

Open access · greenAbstract read
In one paragraph

Article in Neuropathology and applied neurobiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

27 citing papers in PubMed, 40 citations in OpenAlex.

  1. Reframing TDP-43 in Alzheimer's disease: From co-pathology to neurovascular culprit.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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  3. Review
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  5. Lower GLUT1 and unchanged MCT1 in Alzheimer's disease cerebrovasculature.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
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  6. Review
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  16. Effects of Cadmium Exposure on Leydig Cells and Blood Vessels in Mouse Testis.International journal of environmental research and public health · 2022
    Article
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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

5 authors at 2 institutions in 2 countries.

P BourassaFaculté de pharmacie, Université Laval, Québec, QC, Canada.
C TremblayAxe Neurosciences, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada.
J A SchneiderRush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
D A BennettRush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
F CalonFaculté de pharmacie, Université Laval, Québec, QC, Canada.ORCID 0000-0002-4203-0887
Université Laval · CARush University Medical Center · US

Funding

SUPPLEMENT TO RUSH ALZHEIMERS DISEASE CENTER COREP30AG010161 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI LEURGANS, SUE E. · 1991 to 2020
$49.1M
RISK FACTORS, PATHOLOGY, AND CLINICAL EXPRESSIONS OF ADR01AG015819 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI BENNETT, DAVID ALAN · 1998 to 2024
$21.4M
Characterizing TDP-43 related hippocampal degeneration and memory loss in agingR01AG067482 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI SCHNEIDER, JULIE A. · 2020 to 2024
$6.8M
CIHR MOP125930NIA NIH HHS P30 AG010161NIA NIH HHS R01 AG015819NIA NIH HHS R01 AG067482
6 · The paper itself

Abstract

aimsBrain mural cells (BMC), smooth muscle cells and pericytes, interact closely with endothelial cells and modulate numerous cerebrovascular functions. A loss of BMC function is suspected to play a role in the pathophysiology of Alzheimer's Disease (AD).

methodsBMC markers, namely smooth muscle alpha actin (α-SMA) for smooth muscle cells, as well as platelet-derived growth factor receptor β (PDGFRβ) and aminopeptidase N (ANPEP or CD13) for pericytes, were assessed by Western immunoblotting in microvessel extracts from the parietal cortex of 60 participants of the Religious Orders study, with ages at death ranging from 75 to 98 years old.

resultsParticipants clinically diagnosed with AD had lower vascular levels of α-SMA, PDGFRβ and CD13. These reductions were correlated with lower cognitive scores for global cognition, episodic and semantic memory, perceptual speed and visuospatial ability. In addition, α-SMA, PDGFRβ and CD13 were negatively correlated with vascular Aβ40 concentrations. Vascular levels of BMC markers were also inversely correlated with insoluble cleaved phosphorylated transactive response DNA binding protein 43 (TDP-43) (25 kDa) and positively correlated with soluble cleaved phosphorylated TDP-43 (35 kDa) in cortical homogenates, suggesting strong association between BMC loss and cleaved phosphorylated TDP-43 aggregation.

conclusionsThe results of this study highlight a loss of BMC in AD. The associations between α-SMA, PDGFRβ and CD13 vascular levels with cognitive scores, TDP-43 aggregation and cerebrovascular accumulation of Aβ in the parietal cortex suggest that BMC loss contributes to both AD symptoms and pathology, further strengthening the link between cerebrovascular defects and dementia.

Indexed as

Aged, 80 and overAlzheimer DiseaseAnimalsCognitive DysfunctionFemaleHumansMaleMiceMyocytes, Smooth MuscleParietal LobePericytesTDP-43 ProteinopathiesAlzheimer’s diseasebrain mural cellscerebrovasculaturecognitive impairmentpericytessmooth muscle cellsTDP-43

Identifiers

PMID31970820
PMCPMC7739958
OpenAlexW3002376684

What OpenQuestion holds

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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.