Evidence map›Paper›PMID 25107849›Full record

ArticleSchizophrenia research2014

Reciprocal alterations in cortical cannabinoid receptor 1 binding relative to protein immunoreactivity and transcript levels in schizophrenia.

David W Volk, Stephen M Eggan, Andrew G Horti, Dean F Wong, David A Lewis

Open access · greenAbstract read
In one paragraph

Article in Schizophrenia research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
6.6field-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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. The Role of Cannabis in the Development of Psychosis.Turk psikiyatri dergisi = Turkish journal of psychiatry · 2024
    Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Endocannabinoid System Biomarkers in Alzheimer's Disease.Cannabis and cannabinoid research · 2023
    Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Endocannabinoid system in psychotic and mood disorders, a review of human studies.Progress in neuro-psychopharmacology & biological psychiatry · 2021
    Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Review
  20. Building smart cannabis policy from the science up.The International journal on drug policy · 2017
    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 2 institutions in 1 country.

David W VolkDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15213, United States. Electronic address: volkdw@upmc.edu.
Stephen M EgganDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15213, United States.
Andrew G HortiDepartment of Radiology, Johns Hopkins University, Baltimore, MD 21287, United States.
Dean F WongDepartment of Radiology, Johns Hopkins University, Baltimore, MD 21287, United States; Department of Psychiatry, Johns Hopkins University, Baltimore, MD 21287, United States; Department of Neuroscience, Johns Hopkins University, Baltimore, MD 21287, United States.
David A LewisDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15213, United States; Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA 15213, United States.
University of Pittsburgh · USJohns Hopkins University · US

Funding

SCHIZOPHRENIA AND CORTICAL DOPAMINE/GABA INTERACTIONSR01MH043784 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LEWIS, DAVID A · 1988 to 2023
$7.2M
GABA Neurons and Cortical Circuitry in SchizophreniaR37MH043784 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LEWIS, DAVID A · 2001 to 2010
$6.8M
Cannabis and Adolescent Brain DevelopmentR01DA023109 · NIDA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LEWIS, DAVID A · 2008 to 2012
$2.7M
Development of PET radioligands for cerebral cannabinoid receptor (CB1)R33MH079017 · NIMH · JOHNS HOPKINS UNIVERSITY · PI HORTI, ANDREW G · 2009 to 2011
$1.2M
Schizophrenia and Endocannabinoid Effects on Inhibitory CircuitryK08MH084016 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI VOLK, DAVID W · 2009 to 2013
$858k
Development of PET radioligands for cerebral cannabinoid receptor (CB1)R21MH079017 · NIMH · JOHNS HOPKINS UNIVERSITY · PI HORTI, ANDREW G · 2007 to 2008
$435k
NIDA NIH HHS DA023109NIDA NIH HHS R01 DA023109NIMH NIH HHS K08 MH084016NIMH NIH HHS MH043784NIMH NIH HHS MH079017NIMH NIH HHS MH084016NIMH NIH HHS R01 MH043784NIMH NIH HHS R21 MH079017NIMH NIH HHS R33 MH079017NIMH NIH HHS R37 MH043784
6 · The paper itself

Abstract

The deleterious effects of cannabis use in schizophrenia have been linked, in part, to underlying disturbances in endogenous cannabinoid signaling in the prefrontal cortex. However, while receptor autoradiography studies of the primary cannabinoid receptor (CB1R) have consistently found higher CB1R binding in the prefrontal cortex in schizophrenia, deficits in CB1R mRNA levels and protein immunoreactivity have also been reported in the illness. To investigate this apparent discrepancy, we quantified CB1R binding using receptor autoradiography with the selective CB1R ligand [(3)H]-OMAR in the prefrontal cortex of 21 subjects with schizophrenia who were previously found to have lower levels of both CB1R mRNA using in situ hybridization and CB1R protein using radioimmunocytochemistry relative to matched healthy comparison subjects. We observed higher levels of [(3)H]-OMAR binding in the prefrontal cortex of schizophrenia subjects that did not appear to be attributable to psychotropic medications or substance abuse. The combination of lower levels of CB1R mRNA and immunoreactivity with higher CB1R receptor binding may reflect 1) altered trafficking of the receptor resulting in higher levels of membrane-bound CB1R or 2) higher CB1R affinity. In either case, greater CB1R receptor availability may contribute to the increased susceptibility of schizophrenia subjects to the deleterious effects of cannabis use.

Indexed as

AdultAnalysis of VarianceAutoradiographyFemaleHumansMaleMiddle AgedPiperidinesPositron-Emission TomographyPrefrontal CortexProtein BindingPyrazolesReceptor, Cannabinoid, CB1RNA, MessengerSchizophreniaTritium4-cyano-1-(2,4-dichlorophenyl)-5-(4-methoxyphenyl)-N-(piperidin-1-yl)-1H-pyrazole-3-carboxamideCNR1 protein, humanPiperidinesPyrazolesReceptor, Cannabinoid, CB1RNA, MessengerTritiumCannabinoidCannabisCB1RMarijuanaPETPrefrontal cortexRadioligandRimonabantSchizophrenia

Identifiers

PMID25107849
PMCPMC4177350
OpenAlexW2100115596

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.