Evidence map›Paper›PMID 27578494›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2016

Metabotropic Glutamate Receptor Type 5 (mGluR5) Cortical Abnormalities in Focal Cortical Dysplasia Identified In Vivo With [11C]ABP688 Positron-Emission Tomography (PET) Imaging.

Jonathan M DuBois, Olivier G Rousset, Marie-Christine Guiot, Jeffery A Hall, Andrew J Reader, Jean-Paul Soucy, Pedro Rosa-Neto, Eliane Kobayashi

Open access · hybridAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 3 pooled it
1.3field-weighted citation impact, top 21% 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

14 citing papers in PubMed, 3 syntheses or guidelines pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. EANM practice guidelines for an appropriate use of PET and SPECT for patients with epilepsy.European journal of nuclear medicine and molecular imaging · 2024
    Guideline
  3. Pooled it
  4. Article
  5. Review
  6. Neuropsychiatric disease and treatment · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. A Review of Molecular Imaging of Glutamate Receptors.Molecules (Basel, Switzerland) · 2020
    Review
  12. Review
  13. Article
  14. Frontiers in pharmacology · 2018
    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

8 authors at 4 institutions in 3 countries.

Jonathan M DuBoisDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, Canada H3A 2B4.
Olivier G RoussetDivision of Nuclear Medicine and Molecular Imaging, Johns Hopkins University, Baltimore, MD 21287, USA.
Marie-Christine GuiotDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, Canada H3A 2B4.
Jeffery A HallDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, Canada H3A 2B4.
Andrew J ReaderPET Unit, McConnell Brain Imaging Center, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4.
Jean-Paul SoucyPET Unit, McConnell Brain Imaging Center, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4.
Pedro Rosa-NetoDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, Canada H3A 2B4.
Eliane KobayashiDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec, Canada H3A 2B4.
McGill University · CAMontreal Neurological Institute and Hospital · CAJohns Hopkins University · USKing's College London · GB

Funding

CIHR MOP-115131CIHR MOP-93614
6 · The paper itself

Abstract

Metabotropic glutamate receptor type 5 (mGluR5) abnormalities have been described in tissue resected from epilepsy patients with focal cortical dysplasia (FCD). To determine if these abnormalities could be identified in vivo, we investigated mGluR5 availability in 10 patients with focal epilepsy and an MRI diagnosis of FCD using positron-emission tomography (PET) and the radioligand [11C]ABP688. Partial volume corrected [11C]ABP688 binding potentials (BPND) were computed using the cerebellum as a reference region. Each patient was compared to homotopic cortical regions in 33 healthy controls using region-of-interest (ROI) and vertex-wise analyses. Reduced [11C]ABP688 BPND in the FCD was seen in 7/10 patients with combined ROI and vertex-wise analyses. Reduced FCD BPND was found in 4/5 operated patients (mean follow-up: 63 months; Engel I), of whom surgical specimens revealed FCD type IIb or IIa, with most balloon cells showing negative or weak mGluR5 immunoreactivity as compared to their respective neuropil and normal neurons at the border of resections. [11C]ABP688 PET shows for the first time in vivo evidence of reduced mGluR5 availability in FCD, indicating focal glutamatergic alterations in malformations of cortical development, which cannot be otherwise clearly demonstrated through resected tissue analyses.

Indexed as

Positron-Emission TomographyAdultCarbon RadioisotopesCerebral CortexFemaleFunctional LateralityHumansMaleMalformations of Cortical DevelopmentMiddle AgedOximesPyridinesReceptor, Metabotropic Glutamate 5Young Adult3-(6-methylpyridin-2-ylethynyl)cyclohex-2-enone-O-methyloximeCarbon RadioisotopesGRM5 protein, humanOximesPyridinesReceptor, Metabotropic Glutamate 5[11C]ABP688epilepsyfocal cortical dysplasiametabotropic glutamate receptor type 5positron-emission tomography

Identifiers

PMID27578494
PMCPMC5066831
OpenAlexW2509013218

What OpenQuestion 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 OpenQuestion graph.