Evidence map›Paper›PMID 38912306›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)

Early-phase amyloid PET reproduces metabolic signatures of cognitive decline in Parkinson's disease.

William W T Aye, Megan R Stark, Kyla-Louise Horne, Leslie Livingston, Sophie Grenfell, Daniel J Myall, Toni L Pitcher, Mustafa M Almuqbel, Ross J Keenan, Wassilios G Meissner and 4 more

Abstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–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

10 citing papers in PubMed.

  1. Dynamic [Molecular neurodegeneration · 2026
    Article
  2. Review
  3. Assessment of early-phase [Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Article
  4. Italian intersocietal recommendations for restructuring the diagnostic-therapeutic pathway for the implementation and appropriate use of anti-amyloid monoclonal antibodies in Alzheimer's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. 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

14 authors.

William W T AyeNew Zealand Brain Research Institute Christchurch New Zealand.
Megan R StarkNew Zealand Brain Research Institute Christchurch New Zealand.
Kyla-Louise HorneNew Zealand Brain Research Institute Christchurch New Zealand.
Leslie LivingstonNew Zealand Brain Research Institute Christchurch New Zealand.
Sophie GrenfellNew Zealand Brain Research Institute Christchurch New Zealand.
Daniel J MyallNew Zealand Brain Research Institute Christchurch New Zealand.
Toni L PitcherNew Zealand Brain Research Institute Christchurch New Zealand.
Mustafa M AlmuqbelNew Zealand Brain Research Institute Christchurch New Zealand.
Ross J KeenanNew Zealand Brain Research Institute Christchurch New Zealand.
Wassilios G MeissnerNew Zealand Brain Research Institute Christchurch New Zealand.
John C Dalrymple-AlfordNew Zealand Brain Research Institute Christchurch New Zealand.
Tim J AndersonNew Zealand Brain Research Institute Christchurch New Zealand.
Campbell Le HeronNew Zealand Brain Research Institute Christchurch New Zealand.
Tracy R MelzerNew Zealand Brain Research Institute Christchurch New Zealand.ORCID https://orcid.org/0000-0003-0621-212X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRecent work suggests that amyloid beta (Aβ) positron emission tomography (PET) tracer uptake shortly after injection ("early phase") reflects brain metabolism and perfusion. We assessed this modality in a predominantly amyloid-negative neurodegenerative condition, Parkinson's disease (PD), and hypothesized that early-phase

methodsOne hundred fifteen PD patients across the spectrum of cognitive impairment underwent dual-phase Aβ PET, structural and arterial spin labeling (ASL) magnetic resonance imaging (MRI), and neuropsychological assessments. Multiple linear regression models compared eFBB uptake to cognitive performance and ASL MRI perfusion.

resultsReduced eFBB uptake was associated with cognitive performance in brain regions previously linked to hypometabolism-associated cognitive decline in PD, independent of amyloid status. Furthermore, eFBB uptake correlated with cerebral perfusion across widespread regions. DISCUSSION: EFBB uptake is a potential surrogate measure for cerebral perfusion/metabolism. A dual-phase PET imaging approach may serve as a clinical tool for assessing cognitive impairment. Highlights: Images taken at amyloid beta (Aβ) positron emission tomography tracer injection may reflect brain perfusion and metabolism.Parkinson's disease (PD) is a predominantly amyloid-negative condition.Early-phase florbetaben (eFBB) in PD was associated with cognitive performance.eFBB uptake reflects hypometabolism-related cognitive decline in PD.eFBB correlated with arterial spin labeling magnetic resonance imaging measured cerebral perfusion.eFBB distinguished dementia from normal cognition and mild cognitive impairment.Findings were independent of late-phase Aβ burden.Thus, eFBB may serve as a surrogate measure for brain metabolism/perfusion.

Indexed as

arterial spin labelingcognitive impairmentdementiaearly‐phase positron emission tomographymagnetic resonance imagingneurodegenerative disordersneuroimagingParkinson's diseasepositron emission tomography

Identifiers

PMID38912306
PMCPMC11193095

What Socratic holds

Textmetadata
LicenceCC BY-NC
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 Socratic graph.