Evidence map›Paper›PMID 25707397›Full record

ArticleMolecular psychiatry2015

In-vivo imaging of grey and white matter neuroinflammation in Alzheimer's disease: a positron emission tomography study with a novel radioligand, [18F]-FEPPA.

I Suridjan, B G Pollock, N P L G Verhoeff, A N Voineskos, T Chow, P M Rusjan, N J Lobaugh, S Houle, B H Mulsant, R Mizrahi

Open access · greenAbstract read
In one paragraph

Article in Molecular psychiatry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
9.0field-weighted citation impact, top 2% 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

67 citing papers in PubMed, 127 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Review
  5. Article
  6. Observational
  7. Radiopharmaceuticals and their applications in medicine.Signal transduction and targeted therapy · 2025
    Review
  8. TSPO Radioligands for Neuroinflammation: An Overview.Molecules (Basel, Switzerland) · 2024
    Review
  9. Review
  10. Article
  11. Observational
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Pharmaceutics · 2022
    Review

7 more citing papers are in PubMed but not listed here.

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 1 country.

I SuridjanResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
B G PollockInstitute of Medical Science, University of Toronto, Toronto, ON, Canada.
N P L G VerhoeffInstitute of Medical Science, University of Toronto, Toronto, ON, Canada.
A N VoineskosResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
T ChowResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
P M RusjanResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
N J LobaughResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
S HouleResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
B H MulsantGeriatric Psychiatry Division, Centre for Addiction and Mental Health, Toronto, ON, Canada.
R MizrahiResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.
Centre for Addiction and Mental Health · CAUniversity of Toronto · CABaycrest Hospital · CA

Funding

Imaging Neuroinflammation in Clinical high risk and SchizophreniaR01MH100043 · NIMH · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI MIZRAHI, ROMINA · 2014 to 2018
$1.6M
NIMH NIH HHS R01 MH100043
6 · The paper itself

Abstract

Our primary aim was to compare neuroinflammation in cognitively intact control subjects and patients with Alzheimer's disease (AD) by using positron emission tomography (PET) with translocator protein 18 kDa (TSPO)-specific radioligand [(18)F]-FEPPA. [(18)F]-FEPPA PET scans were acquired on a high-resolution research tomograph in 21 patients with AD (47- 81 years) and 21 control subjects (49-82 years). They were analyzed by using a 2-tissue compartment model with arterial plasma input function. Differences in neuroinflammation, indexed as [(18)F]-FEPPA binding were compared, adjusting for differences in binding affinity class as determined by a single polymorphism in the TSPO gene (rs6971). In grey matter areas, [(18)F]-FEPPA was significantly higher in AD compared with healthy control subjects. Large increases were seen in the hippocampus, prefrontal, temporal, parietal and occipital cortex (average Cohen's d= 0.89). Voxel-based analyses confirmed significant clusters of neuroinflammation in the frontal, temporal and parietal cortex in patients with AD. In white matter, [(18)F]-FEPPA binding was elevated in the posterior limb of the internal capsule, and the cingulum bundle. Higher neuroinflammation in the parietal cortex (r= -0.7, P= 0.005), and posterior limb of the internal capsule (r= -0.8, P=0.001) was associated with poorer visuospatial function. In addition, a higher [(18)F]-FEPPA binding in the posterior limb of the internal capsule was associated with a greater impairment in language ability (r= -0.7, P=0.004). Elevated neuroinflammation can be detected in AD patients throughout the brain grey and white matter by using [(18)F]-FEPPA PET. Our results also suggest that neuroinflammation is associated with some cognitive deficits.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseAnilidesCognition DisordersEncephalitisFemaleFluorine RadioisotopesGray MatterHumansMaleMiddle AgedNeuropsychological TestsPositron-Emission TomographyPyridinesRadioligand AssayAnilidesFluorine RadioisotopesN-(2-((N-(4-phenoxypyridin-3-yl)acetamido)methyl)phenoxy)ethyl fluoridePyridines

Identifiers

PMID25707397
PMCPMC8026116
OpenAlexW2074905557

What OpenQuestion holds

Textmetadata
LicenceTDM
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.