Evidence map›Paper›PMID 27345297›Full record

ArticleBiological psychiatry2016

Fatty Acid Amide Hydrolase Binding in Brain of Cannabis Users: Imaging With the Novel Radiotracer [

Isabelle Boileau, Esmaeil Mansouri, Belinda Williams, Bernard Le Foll, Pablo Rusjan, Romina Mizrahi, Rachel F Tyndale, Marilyn A Huestis, Doris E Payer, Alan A Wilson and 3 more

Open access · greenAbstract read
In one paragraph

Article in Biological psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 6% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. PET imaging of FAAH in chronic Cannabis users: longitudinal assessment during short-term abstinence.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Pharmacotherapy for Cannabis Use Disorder: Preclinical and Clinical Models.Current topics in behavioral neurosciences · 2026
    Review
  9. FAAH and MAGL inhibition: Evolving approaches to treating substance use disorders.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  10. Review
  11. Chemical Probes for Investigating the Endocannabinoid System.Current topics in behavioral neurosciences · 2026
    Review
  12. Novel neurotherapeutic targets for substance use disorders: Neuroplasticity, neuroinflammation, gasotransmitters and non-canonical organ systems.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  13. Article
  14. Review
  15. Cannabis use disorder: from neurobiology to treatment.The Journal of clinical investigation · 2024
    Review
  16. Article
  17. Article
  18. Review
  19. Genes · 2023
    Review
  20. 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

13 authors at 3 institutions in 2 countries.

Isabelle BoileauAddiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Human Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada. Electronic address: isabelle.boileau@camh.ca.
Esmaeil MansouriAddiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Human Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
Belinda WilliamsAddiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Human Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
Bernard Le FollCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Departments of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.
Pablo RusjanResearch Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Romina MizrahiCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.
Rachel F TyndaleCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Departments of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Marilyn A HuestisChemistry and Drug Metabolism, IRP, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland.
Doris E PayerAddiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Human Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Alan A WilsonCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
Sylvain HouleCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
Stephen J KishHuman Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Departments of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.
Junchao TongHuman Brain Lab, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Centre for Addiction and Mental Health · CAUniversity of Toronto · CANational Institutes of Health · US

Funding

Endocannabinoid Metabolism in Cannabis Users: PET Studies with the Novel Probe [1R21DA036024 · NIDA · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI BOILEAU, ISABELLE · 2013 to 2014
$295k
Cognitive and Behavioral Effects of Sleep Restriction in Adolescents with ADHDR03MH109787 · NIMH · CINCINNATI CHILDRENS HOSP MED CTR · PI BECKER, STEPHEN P · 2016 to 2017
$156k
CIHR TMH109787NIDA NIH HHS R21 DA036024NIMH NIH HHS R03 MH109787
6 · The paper itself

Abstract

backgroundOne of the major mechanisms for terminating the actions of the endocannabinoid anandamide is hydrolysis by fatty acid amide hydrolase (FAAH), and inhibitors of the enzyme were suggested as potential treatment for human cannabis dependence. However, the status of brain FAAH in cannabis use disorder is unknown.

methodsBrain FAAH binding was measured with positron emission tomography and [

resultsIn cannabis users, FAAH binding was significantly lower by 14%-20% across the brain regions examined than in matched control subjects (overall Cohen's d = 0.96). Lower binding was negatively correlated with cannabinoid concentrations in blood and urine and was associated with higher trait impulsiveness.

conclusionsLower FAAH binding levels in the brain may be a consequence of chronic and recent cannabis exposure and could contribute to cannabis withdrawal. This effect should be considered in the development of novel treatment strategies for cannabis use disorder that target FAAH and endocannabinoids. Further studies are needed to examine possible changes in FAAH binding during prolonged cannabis abstinence and whether lower FAAH binding predates drug use.

Indexed as

AdultAmidohydrolasesAmygdalaBrainCannabinoidsCannabisCarbon RadioisotopesDronabinolFatty Acid Amide HydrolasesFemaleHumansImpulsive BehaviorMaleMarijuana AbusePositron-Emission TomographyAmidohydrolasesCannabinoidsCarbon RadioisotopesDronabinolFatty Acid Amide Hydrolases[(11)C]CURBCannabis use disorderEndocannabinoidFAAHFatty acid amide hydrolasePositron emission tomography

Identifiers

PMID27345297
PMCPMC5050070
OpenAlexW2344299676

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.