Evidence map›Paper›PMID 33325068›Full record

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

Distinct effects of beta-amyloid and tau on cortical thickness in cognitively healthy older adults.

Theresa M Harrison, Richard Du, Giuliana Klencklen, Suzanne L Baker, William J Jagust

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 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 3% 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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Multimodal neuroimaging approach for cognitive impairment in Alzheimer's disease.medRxiv : the preprint server for health sciences · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Tau, atrophy, and domain-specific cognitive impairment in typical Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Global brain activity and its coupling with cerebrospinal fluid flow is related to tau pathology.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    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

5 authors at 3 institutions in 1 country.

Theresa M HarrisonHelen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA.
Richard DuHelen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA.
Giuliana KlencklenHelen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA.
Suzanne L BakerLawrence Berkeley National Laboratory, Berkeley, California, USA.
William J JagustHelen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA.
University of California, Berkeley · USBerkeley College · USLawrence Berkeley National Laboratory · US

Funding

Neural and Biochemical Mechanisms of Cognitive AgingR01AG034570 · NIA · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI William J. Jagust · 2009 to 2026
$12.0M
Tracking Tau with In Vivo Braak Staging: Longitudinal Analysis of Tau Pathology and Functional Sequelae in Cognitively Healthy Older AdultsF32AG057107 · NIA · UNIVERSITY OF CALIFORNIA BERKELEY · PI HARRISON, THERESA M. · 2017 to 2020
$124k
NIA NIH HHS F32 AG057107NIA NIH HHS R01 AG034570
6 · The paper itself

Abstract

introductionPublished reports of associations between β-amyloid (Aβ) and cortical integrity conflict. Tau biomarkers may help elucidate the complex relationship between pathology and neurodegeneration in aging.

methodsWe measured cortical thickness using magnetic resonance imaging, Aβ using Pittsburgh compound B positron emission tomography (PiB-PET), and tau using flortaucipir (FTP)-PET in 125 cognitively normal older adults. We examined relationships among PET measures, cortical thickness, and cognition.

resultsCortical thickness was reduced in PiB+/FTP+ participants compared to the PiB+/FTP- and PiB-/FTP- groups. Continuous PiB associations with cortical thickness were weak but positive in FTP- participants and negative in FTP+. FTP strongly negatively predicted thickness regardless of PiB status. FTP was associated with memory and cortical thickness, and mediated the association of PiB with memory. DISCUSSION: Past findings linking Aβ and cortical thickness are likely weak due to opposing effects of Aβ on cortical thickness relative to tau burden. Tau, in contrast to Aβ, is strongly related to cortical thickness and memory.

Indexed as

AgedAgingAmyloid beta-PeptidesAtrophyBrainCerebral CortexCognitionFemaleHealthy VolunteersHumansLongitudinal StudiesMagnetic Resonance ImagingMaleNeuropsychological TestsPositron-Emission Tomographytau ProteinsAmyloid beta-Peptidestau ProteinsAlzheimer's diseaseatrophycortical integrityflortaucipirliterature reviewneurodegenerationnormal agingPARTPittsburgh compound Bpositron emission tomographypublication biasstructural magnetic resonance imaging

Identifiers

PMID33325068
PMCPMC8203764
OpenAlexW3111062478

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.