Evidence map›Paper›PMID 21797651›Full record

ArticleExpert review of neurotherapeutics2011

Is the highest density of CB1 receptors in paranoid schizophrenia a correlate of endocannabinoid system functioning?

Antonio Waldo Zuardi, Fransisco Silveira Guimarães, Jaime Eduardo C Hallak, José Alexandre S Crippa

Erratum issuedAbstract readComment
PubMed Publisher
In one paragraph

Article in Expert review of neurotherapeutics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.8field-weighted citation impact, top 24% 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

4 citing papers in PubMed, 8 citations in OpenAlex.

  1. Review
  2. Article
  3. Multiple mechanisms involved in the large-spectrum therapeutic potential of cannabidiol in psychiatric disorders.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2012
    Review
  4. New insights on endocannabinoid transmission in psychomotor disorders.Progress in neuro-psychopharmacology & biological psychiatry · 2012
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Antonio Waldo ZuardiDepartment of Neurosciences and Behavior, Division of Psychiatry, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Hospital das Clínicas-Terceiro Andar, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, CEP - 14049-800, Brazil. awzuardi@fmrp.usp.br
Fransisco Silveira Guimarães
Jaime Eduardo C Hallak
José Alexandre S Crippa
Clinics Hospital of Ribeirão Preto · BRUniversidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increased binding of type 1 cannabinoid (CB1) receptor ligands in the dorsolateral prefrontal cortex and other areas has been shown in post-mortem studies, although there are some inconsistent results. The study by Dalton et al. employed a more rigorous control for potentially confounding variables and investigated whether the density of CB1 receptors and their mRNA expression were different in subtypes of schizophrenia patients. They observed an increased density of CB1 receptors in paranoid schizophrenia as compared with nonparanoid schizophrenia patients and controls. This finding strengthens the evidence for the involvement of endocannabinoids in schizophrenia. However, it is difficult to reconcile with previous observations of increased levels of anandamide in the cerebrospinal fluid in paranoid schizophrenia, since CB1 receptor agonists were shown to induce the downregulation of these receptors. The precise role of the endocannabinoid system in the pathophysiology of schizophrenia remains far from understood.

Identifiers

PMID21797651
OpenAlexW2140351142

What OpenQuestion holds

Textmetadata
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.