Evidence map›Paper›PMID 33226181›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2021

Nerve growth factor (NGF) pathway biomarkers in Down syndrome prior to and after the onset of clinical Alzheimer's disease: A paired CSF and plasma study.

Rowan Pentz, M Florencia Iulita, Adriana Ducatenzeiler, Laura Videla, Bessy Benejam, María Carmona‐Iragui, Rafael Blesa, Alberto Lleó, Juan Fortea, A Claudio Cuello

Open access · hybridAbstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 8% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Blood-based biomarkers for Alzheimer's disease in Down syndrome: A systematic review and meta-analysis.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Pooled it
  2. Article
  3. Use of anti-amyloid-β monoclonal antibodies in persons with Down syndrome Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. The history of Down syndrome-associated Alzheimer's disease; past, present, and future.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Brain cholinergic terminal density utilizing [Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  14. Review
  15. Article
  16. Blood biomarkers in Down syndrome: Facilitating Alzheimer's disease detection and monitoring.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  17. Review
  18. Article
  19. Article
  20. Review
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

10 authors at 5 institutions in 3 countries.

Rowan PentzDepartment of Neurology and Neurosurgery, McGill University, Montreal, Canada.
M Florencia IulitaDepartment of Pharmacology and Therapeutics, McGill University, Montreal, Canada.
Adriana DucatenzeilerDepartment of Pharmacology and Therapeutics, McGill University, Montreal, Canada.
Laura VidelaSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
Bessy BenejamSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
María Carmona‐IraguiSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
Rafael BlesaSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
Alberto LleóSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
Juan ForteaSant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
A Claudio CuelloDepartment of Neurology and Neurosurgery, McGill University, Montreal, Canada.
Biomedical Research Networking Center on Neurodegenerative Diseases · ESMcGill University · CAUniversitat Autònoma de Barcelona · ESHospital de Sant Pau · ESUniversity of Oxford · GB

Funding

The Role of Inflammation and NGF Dysfunction in the Evolution of Alzheimer Disease Pathology in Down Syndrome-RevisionRF1AG056850 · NIA · UNIVERSITY OF CALIFORNIA-IRVINE · PI BUSCIGLIO, JORGE A, CUELLO, A CLAUDIO · 2018 to 2020
$5.9M
Tau pathology in Down syndrome and Alzheimer'sRF1AG061566 · NIA · UNIVERSITY OF DENVER (COLORADO SEMINARY) · PI GRANHOLM-BENTLEY, ANN-CHARLOTTE ESTHER, MARGITTAI, MARTIN · 2019 to 2019
$3.4M
Biological Correlates of Alzheimer in Down Syndrome.R21AG056974 · NIA · UNIVERSITY OF DENVER (COLORADO SEMINARY) · PI GRANHOLM-BENTLEY, ANN-CHARLOTTE ESTHER · 2017 to 2018
$414k
NIA NIH HHS R21 AG056974NIA NIH HHS RF1 AG056850NIA NIH HHS RF1 AG061566
6 · The paper itself

Abstract

backgroundThe discovery that nerve growth factor (NGF) metabolism is altered in Down syndrome (DS) and Alzheimer's disease (AD) brains offered a framework for the identification of novel biomarkers signalling NGF deregulation in AD pathology.

methodsWe examined levels of NGF pathway proteins (proNGF, neuroserpin, tissue plasminogen activator [tPA], and metalloproteases [MMP]) in matched cerebrospinal fluid (CSF)/plasma samples from AD-symptomatic (DSAD) and AD-asymptomatic (aDS) individuals with DS, as well as controls (HC).

resultsProNGF and MMP-3 were elevated while tPA was decreased in plasma from individuals with DS. CSF from individuals with DS showed elevated proNGF, neuroserpin, MMP-3, and MMP-9. ProNGF and MMP-9 in CSF differentiated DSAD from aDS (area under the curve = 0.86, 0.87). NGF pathway markers associated with CSF amyloid beta and tau and differed by sex. DISCUSSION: Brain NGF metabolism changes can be monitored in plasma and CSF, supporting relevance in AD pathology. These markers could assist staging, subtyping, or precision medicine for AD in DS.

Indexed as

BiomarkersAdultAlzheimer DiseaseBrainDown SyndromeFemaleHumansMaleMatrix Metalloproteinase 3Matrix Metalloproteinase 9Middle AgedNerve Growth FactorNeuropeptidesNeuroserpinSerpinsSignal TransductionBiomarkersMatrix Metalloproteinase 3Matrix Metalloproteinase 9MMP3 protein, humanNerve Growth FactorNeuropeptidesNeuroserpinSerpinstau ProteinsAlzheimer's diseasebiomarkersbloodcerebrospinal fluidcholinergicDown syndromemetalloproteasesMMP-1MMP-3MMP-9nerve growth factorneuroserpinNGF metabolic pathwayplasmaproNGFtissue plasminogen activator

Identifiers

PMID33226181
PMCPMC8043977
OpenAlexW3107350394

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.