Evidence map›Paper›PMID 34501378›Full record

ArticleJournal of clinical medicine2021

Small Neuron-Derived Extracellular Vesicles from Individuals with Down Syndrome Propagate Tau Pathology in the Wildtype Mouse Brain.

Aurélie Ledreux, Sarah Thomas, Eric D Hamlett, Camille Trautman, Anah Gilmore, Emily Rickman Hager, Daniel A Paredes, Martin Margittai, Juan Fortea, Ann-Charlotte Granholm

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 20 citations in OpenAlex.

  1. Precision medicine for Alzheimer's disease in Down syndrome.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  2. Article
  3. Vertebrate and Invertebrate Animal Models for the Study of Down Syndrome.International journal of molecular sciences · 2025
    Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Down Syndrome Biobank Consortium: A perspective.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. 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 3 institutions in 2 countries.

Aurélie LedreuxKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
Sarah ThomasKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
Eric D HamlettDepartment of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA.
Camille TrautmanKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
Anah GilmoreKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
Emily Rickman HagerDepartment of Chemistry and Biochemistry, University of Denver, Denver, CO 80208, USA.
Daniel A ParedesKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
Martin MargittaiDepartment of Chemistry and Biochemistry, University of Denver, Denver, CO 80208, USA.ORCID 0000-0003-1903-5927
Juan ForteaHospital de la Santa Creu i Sant Pau and Catalan Down Syndrome Foundation, 08041 Barcelona, Spain.
Ann-Charlotte GranholmKnoebel Institute for Healthy Aging, University of Denver, Denver, CO 80208, USA.
University of Denver · USHospital de Sant Pau · ESMedical University of South Carolina · US

Funding

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
Noradrenergic dysfunction in Down SyndromeRF1AG070153 · NIA · UNIVERSITY OF DENVER (COLORADO SEMINARY) · PI LEDREUX, AURÉLIE · 2020 to 2020
$1.8M
Polyamines in Down syndrome-Alzheimer's diseaseR21AG070297 · NIA · UNIVERSITY OF DENVER (COLORADO SEMINARY) · PI PAREDES, DANIEL A · 2020 to 2020
$414k
BrightFocus Foundation CA2018010NIA NIH HHS RF1 AG070153NIH HHS R01AG070153NIH HHS R21AG070297NIH HHS RF1AG061566
6 · The paper itself

Abstract

Individuals with Down syndrome (DS) exhibit Alzheimer's disease (AD) pathology at a young age, including amyloid plaques and neurofibrillary tangles (NFTs). Tau pathology can spread via extracellular vesicles, such as exosomes. The cargo of neuron-derived small extracellular vesicles (NDEVs) from individuals with DS contains p-Tau at an early age. The goal of the study was to investigate whether NDEVs isolated from the blood of individuals with DS can spread Tau pathology in the brain of wildtype mice. We purified NDEVs from the plasma of patients with DS-AD and controls and injected small quantities using stereotaxic surgery into the dorsal hippocampus of adult wildtype mice. Seeding competent Tau conformers were amplified in vitro from DS-AD NDEVs but not NDEVs from controls. One month or 4 months post-injection, we examined Tau pathology in mouse brains. We found abundant p-Tau immunostaining in the hippocampus of the mice injected with DS-AD NDEVs compared to injections of age-matched control NDEVs. Double labeling with neuronal and glial markers showed that p-Tau staining was largely found in neurons and, to a lesser extent, in glial cells and that p-Tau immunostaining was spreading along the corpus callosum and the medio-lateral axis of the hippocampus. These studies demonstrate that NDEVs from DS-AD patients exhibit Tau seeding capacity and give rise to tangle-like intracellular inclusions.

Indexed as

agingAlzheimer’s diseasebiomarkersDown syndromeneuropathology

Identifiers

PMID34501378
PMCPMC8432237
OpenAlexW3197798229

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.