Evidence map›Paper›PMID 34052464›Full record

ArticleNeuroImage2021

Effect of age on brain metabotropic glutamate receptor subtype 5 measured with [

Adam P Mecca, Kelly Rogers, Zachary Jacobs, Julia W McDonald, Hannah R Michalak, Nicole DellaGioia, Wenzhen Zhao, Ansel T Hillmer, Nabeel Nabulsi, Keunpoong Lim and 6 more

Abstract readComparative Study
In one paragraph

Article in NeuroImage, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Synaptic density imaging in behavioral variant frontotemporal dementia: A comparison ofAlzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  2. Trajectories of late-life depression: insights from molecular imaging.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Resting-State Functional MRI and PET Imaging as Noninvasive Tools to Study (Ab)Normal Neurodevelopment in Humans and Rodents.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. 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

16 authors.

Adam P MeccaAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA. Electronic address: adam.mecca@yale.edu.
Kelly RogersAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Zachary JacobsAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Julia W McDonaldAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Hannah R MichalakAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Nicole DellaGioiaDepartment of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Wenzhen ZhaoAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Ansel T HillmerDepartment of Psychiatry, Yale University School of Medicine, New Haven, CT, USA; Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
Nabeel NabulsiDepartment of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
Keunpoong LimDepartment of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
Jim RopchanDepartment of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
Yiyun HuangDepartment of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
David MatuskeyDepartment of Psychiatry, Yale University School of Medicine, New Haven, CT, USA; Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA; Department of Neurology, Yale University School of Medicine, New Haven, CT, USA.
Irina EsterlisDepartment of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
Richard E CarsonDepartment of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA.
Christopher H van DyckAlzheimer's Disease Research Unit, Yale University School of Medicine, One Church Street, 8th Floor, New Haven, CT, 06514, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA; Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA; Department of Neurology, Yale University School of Medicine, New Haven, CT, USA.

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Yale Alzheimer Disease Research CenterP30AG066508 · NIA · YALE UNIVERSITY · PI STEPHEN M STRITTMATTER · 2020 to 2026
$30.2M
Prion Protein in Alzheimer's Disease PathophysiologyR01AG034924 · NIA · YALE UNIVERSITY · PI STEPHEN M STRITTMATTER · 2010 to 2026
$9.6M
Yale Alzheimer Disease Research CenterP50AG047270 · NIA · YALE UNIVERSITY · PI MAROTTOLI, RICHARD · 2015 to 2019
$8.3M
PET-fMRI Study of Glutamate and Frontal Function in Bi- and Uni-polar DepressionR01MH104459 · NIMH · YALE UNIVERSITY · PI ESTERLIS, IRINA · 2015 to 2019
$3.6M
Investigation of molecular changes in mGluR5 and SV2A to study synaptic alterations in Alzheimer's disease using PET.K23AG057794 · NIA · YALE UNIVERSITY · PI MECCA, ADAM PETER · 2018 to 2022
$977k
Multimodal Neuroimaging of Alcohol Withdrawal: The Role of Glutamate in Neural ReorganizationK01AA024788 · NIAAA · YALE UNIVERSITY · PI HILLMER, ANSEL · 2017 to 2021
$894k
NCATS NIH HHS UL1 TR001863NIAAA NIH HHS K01 AA024788NIA NIH HHS K23 AG057794NIA NIH HHS P30 AG066508NIA NIH HHS P50 AG047270NIA NIH HHS R01 AG034924NIMH NIH HHS R01 MH104459
6 · The paper itself

Abstract

objectiveMetabotropic glutamate receptor subtype 5 (mGluR5) is integral to the brain glutamatergic system and cognitive function. This study investigated whether aging is associated with decreased brain mGluR5 availability.

methodsCognitively normal participants (n = 45), aged 18 to 84 years, underwent [

resultsIn the primary analysis, older age was associated with lower [

conclusionReductions in mGluR5 availability with age appear to be largely mediated by tissue loss. Quantification of [

Indexed as

Brain ChemistryNeuroimagingPositron-Emission TomographyAdolescentAdultAgedAged, 80 and overAgingFemaleFluorine RadioisotopesFluorodeoxyglucose F18Gray MatterHippocampusHumansMagnetic Resonance ImagingMaleFluorine-18Fluorine RadioisotopesFluorodeoxyglucose F18GRM5 protein, humanRadiopharmaceuticalsReceptor, Metabotropic Glutamate 5[(18)F]FPEB, PETAgingGlutamate receptormGluR5

Identifiers

PMID34052464
PMCPMC8378132

What OpenQuestion holds

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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.