Evidence map›Paper›PMID 33781319›Full record

ArticleAlzheimer's research & therapy2021

Plasma pTau181 predicts cortical brain atrophy in aging and Alzheimer's disease.

Cécile Tissot, Andréa L Benedet, Joseph Therriault, Tharick A Pascoal, Firoza Z Lussier, Paramita Saha-Chaudhuri, Mira Chamoun, Melissa Savard, Sulantha S Mathotaarachchi, Gleb Bezgin and 13 more

Abstract read
In one paragraph

Article in Alzheimer's research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. A blood based mitochondrial functional index biomarker for Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  9. Review
  10. Article
  11. Tau profiling across Alzheimer's disease staging reveals vulnerability to disease pathophysiology.European journal of nuclear medicine and molecular imaging · 2025
    Article
  12. Plasma Phosphorylated Tau181 as a Biomarker for Alzheimer's Disease Co-Pathology in Lewy Body Disease.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Plasma protein risk scores for mild cognitive impairment and Alzheimer's disease in the Framingham heart study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  19. Article
  20. Article
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

23 authors.

Cécile TissotThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Andréa L BenedetThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Joseph TherriaultThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Tharick A PascoalThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Firoza Z LussierThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Paramita Saha-ChaudhuriDepartment of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada.
Mira ChamounThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Melissa SavardThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Sulantha S MathotaarachchiThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Gleb BezginThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Yi-Ting WangThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Jaime Fernandez AriasThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Juan Lantero RodriguezDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Anniina SnellmanDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Nicholas J AshtonDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Thomas K KarikariDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Kaj BlennowDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Henrik ZetterbergDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Etienne De Villers-SidaniCenter for Research on Brain, Language and Music, McGill university, Montreal, QC, Canada.
Philippe HuotNeurodegenerative disease groups, Montreal Neurological Institute, Montreal, QC, Canada.
Serge GauthierThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada.
Pedro Rosa-NetoThe McGill University Research Centre for Studies in Aging, Douglas Hospital, McGill University, 875 La Salle Blvd - FBC room 3149, Montreal, QC, H4H 1R3, Canada. pedro.rosa@mcgill.ca.ORCID 0000-0001-9116-1376
Alzheimer’s Disease Neuroimaging Initiative

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate the association of plasma pTau181, assessed with a new immunoassay, with neurodegeneration of white matter and gray matter cross-sectionally and longitudinally, in aging and Alzheimer's disease.

methodsObservational data was obtained from the Alzheimer's Disease Neuroimaging Initiative, in which participants underwent plasma assessment and magnetic resonance imaging. Based on their clinical diagnosis, participants were classified as cognitively unimpaired and cognitively impaired. Linear regressions and linear mixed-effect models were used to test the cross-sectional and longitudinal associations between baseline plasma pTau181 and neurodegeneration using voxel-based morphometry.

resultsWe observed a negative correlation at baseline between plasma pTau181 and gray matter volume in cognitively unimpaired individuals. In cognitively impaired individuals, we observed a negative association between plasma pTau181 and both gray and white matter volume. In longitudinal analyses conducted in the cognitively unimpaired group, plasma pTau181 was negatively correlated with gray matter volume, starting 36 months after baseline assessments. Finally, in cognitively impaired individuals, plasma pTau181 concentrations were negatively correlated with both gray and white matter volume as early as 12 months after baseline, and neurodegeneration increased in an incremental manner until 48 months.

conclusionsHigher levels of plasma pTau181 correlate with neurodegeneration and predict further brain atrophy in aging and Alzheimer's disease. Plasma pTau181 may be useful in predicting AD-related neurodegeneration, comparable to positron emission tomography or cerebrospinal fluid assessment with high specificity for AD neurodegeneration.

Indexed as

Alzheimer DiseaseAgingAtrophyBrainCross-Sectional StudiesHumansMagnetic Resonance ImagingPositron-Emission TomographyAlzheimer’s diseaseNeurodegenerationPlasma pTau181Voxel-based morphometry

Identifiers

PMID33781319
PMCPMC8008680

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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.