Evidence map›Paper›PMID 37891745›Full record

ArticleBrain sciences2023

Circulating Endocannabinoids and N-Acylethanolamines in Individuals with Cannabis Use Disorder-Preliminary Findings.

Nadia Boachie, Erin Gaudette, Richard P Bazinet, Lin Lin, Rachel F Tyndale, Esmaeil Mansouri, Marilyn A Huestis, Junchao Tong, Bernard Le Foll, Stephen J Kish and 2 more

Abstract read
In one paragraph

Article in Brain sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  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. Identifying behavioral and biological predictors of cannabis vapor self-administration in rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. FAAH and MAGL inhibition: Evolving approaches to treating substance use disorders.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  11. Article
  12. 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

12 authors.

Nadia BoachieBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.
Erin GaudetteBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.
Richard P BazinetDepartment of Nutritional Sciences, University of Toronto, Toronto, ON M5S 1A1, Canada.
Lin LinDepartment of Nutritional Sciences, University of Toronto, Toronto, ON M5S 1A1, Canada.
Rachel F TyndaleCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.ORCID 0000-0003-1297-2053
Esmaeil MansouriBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.ORCID 0000-0002-8906-1314
Marilyn A HuestisInstitute of Emerging Health Professions, Thomas Jefferson University, Severna Park, Philadelphia, PA 19144, USA.ORCID 0000-0003-2137-4645
Junchao TongBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.ORCID 0000-0001-9299-0045
Bernard Le FollBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.ORCID 0000-0002-6406-4973
Stephen J KishBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.
Tony P GeorgeBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.ORCID 0000-0003-1645-9767
Isabelle BoileauBrain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON N6B 1Y6, Canada.

Funding

Understanding Cannabis Withdrawal: A PET Study of Endocannabinoid MetabolismR21DA045296 · NIDA · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI BOILEAU, ISABELLE · 2018 to 2019
$295k
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
NIDA NIH HHS R21 DA036024NIDA NIH HHS R21 DA045296
6 · The paper itself

Abstract

backgroundEndocannabinoids and related N-acylethanolamines (NAEs) are bioactive lipids with important physiological functions and putative roles in mental health and addictions. Although chronic cannabis use is associated with endocannabinoid system changes, the status of circulating endocannabinoids and related NAEs in people with cannabis use disorder (CUD) is uncertain.

methodsEleven individuals with CUD and 54 healthy non-cannabis using control participants (HC) provided plasma for measurement by high-performance liquid chromatography-mass spectrometry of endocannabinoids (2-arachidonoylglycerol (2-AG) and N-arachidonoylethanolamine (AEA)) and related NAE fatty acids (N-docosahexaenoylethanolamine (DHEA) and N-oleoylethanolamine (OEA)). Participants were genotyped for the functional gene variant of FAAH (rs324420, C385A) which may affect concentrations of AEA as well as other NAEs (OEA, DHEA).

resultsIn overnight abstinent CUD, AEA, OEA and DHEA concentrations were significantly higher (31-40%;

conclusionsOur preliminary findings, requiring replication, might suggest that activity of the endocannabinoid system is elevated in chronic cannabis users. It is unclear whether this elevation is a compensatory response or a predating state. Studies examining endocannabinoids and NAEs during prolonged abstinence as well as the potential role of DHEA in craving are warranted.

Indexed as

2-AGAEADHEAendocannabinoidsN-acylethanolaminesNAEOEA

Identifiers

PMID37891745
PMCPMC10605789

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.