Evidence map›Paper›PMID 26541329›Full record

ArticleNeuropharmacology2016

Endocannabinoid regulation of nausea is mediated by 2-arachidonoylglycerol (2-AG) in the rat visceral insular cortex.

Martin A Sticht, Cheryl L Limebeer, Benjamin R Rafla, Rehab A Abdullah, Justin L Poklis, Winnie Ho, Micah J Niphakis, Benjamin F Cravatt, Keith A Sharkey, Aron H Lichtman and 1 more

Abstract read
In one paragraph

Article in Neuropharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.5field-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

25 citing papers in PubMed, 44 citations in OpenAlex.

  1. Review
  2. Endocannabinoid signaling in stress, nausea, and vomiting.Neurogastroenterology and motility · 2025
    Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Antiemetic Effects of Cannabinoid Agonists in Nonhuman Primates.The Journal of pharmacology and experimental therapeutics · 2020
    Article
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  18. Review
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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

11 authors at 4 institutions in 2 countries.

Martin A StichtDept. of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, Ontario, Canada; Hotchkiss Brain Institute, Dept. of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada. Electronic address: martin.sticht@ucalgary.ca.
Cheryl L LimebeerDept. of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, Ontario, Canada.
Benjamin R RaflaDept. of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, Ontario, Canada.
Rehab A AbdullahDept. of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA, USA.
Justin L PoklisDept. of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA, USA.
Winnie HoHotchkiss Brain Institute, Dept. of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.
Micah J NiphakisThe Skaggs Institute for Chemical Biology and Dept. of Chemical Physiology, The Scripps Research Institute, La Jolla, CA, USA.
Benjamin F CravattThe Skaggs Institute for Chemical Biology and Dept. of Chemical Physiology, The Scripps Research Institute, La Jolla, CA, USA.
Keith A SharkeyHotchkiss Brain Institute, Dept. of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.
Aron H LichtmanDept. of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA, USA.
Linda A ParkerDept. of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, Ontario, Canada.
University of Guelph · CAVirginia Commonwealth University Medical Center · USScripps Research Institute · USUniversity of Calgary · CA

Funding

VCU Center for Drug Addiction ResearchP30DA033934 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI Matthew Sean Halquist · 2014 to 2026
$13.8M
SYNTHESIS OF SR141716A AND ANANDAMIDE ANALOGSP01DA009789 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI CRAVATT, BENJAMIN F · 1995 to 2013
$11.6M
Monoacylglycerol Lipase Inhibitors for Treating Opioid Use Disorders (RO)R01DA032933 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI CRAVATT, BENJAMIN F, LICHTMAN, ARON H · 2012 to 2014
$1.5M
Canadian Institutes of Health Research 334086NIDA NIH HHS P01 DA009789NIDA NIH HHS P01DA009789NIDA NIH HHS P30 DA033934NIDA NIH HHS P30DA033934NIDA NIH HHS R01 DA032933NIDA NIH HHS R01DA032933
6 · The paper itself

Abstract

Cannabinoid (CB) agonists suppress nausea in humans and animal models; yet, their underlying neural substrates remain largely unknown. Evidence suggests that the visceral insular cortex (VIC) plays a critical role in nausea. Given the expression of CB1 receptors and the presence of endocannabinoids in this brain region, we hypothesized that the VIC endocannabinoid system regulates nausea. In the present study, we assessed whether inhibiting the primary endocannabinoid hydrolytic enzymes in the VIC reduces acute lithium chloride (LiCl)-induced conditioned gaping, a rat model of nausea. We also quantified endocannabinoid levels during an episode of nausea, and assessed VIC neuronal activation using the marker, c-Fos. Local inhibition of monoacylglycerol lipase (MAGL), the main hydrolytic enzyme of 2-arachidonylglycerol (2-AG), reduced acute nausea through a CB1 receptor mechanism, whereas inhibition of fatty acid amide hydrolase (FAAH), the primary catabolic enzyme of anandamide (AEA), was without effect. Levels of 2-AG were also selectively elevated in the VIC during an episode of nausea. Inhibition of MAGL robustly increased 2-AG in the VIC, while FAAH inhibition had no effect on AEA. Finally, we demonstrated that inhibition of MAGL reduced VIC Fos immunoreactivity in response to LiCl treatment. Taken together, these findings provide compelling evidence that acute nausea selectively increases 2-AG in the VIC, and suggests that 2-AG signaling within the VIC regulates nausea by reducing neuronal activity in this forebrain region.

Indexed as

AnimalsArachidonic AcidsCarbamatesCerebral CortexEndocannabinoidsGlyceridesNauseaNeuronsPiperazinesProto-Oncogene Proteins c-fosRatsReceptor, Cannabinoid, CB1Arachidonic AcidsCarbamatesEndocannabinoidsGlyceridesglyceryl 2-arachidonateJZL195PiperazinesProto-Oncogene Proteins c-fosReceptor, Cannabinoid, CB125154867)2-arachidonoylglycerol (2-AG)Anandamide (PubChem CID: 5281969)c-FosEndocannabinoidInsular cortexJZL195 (PubChem CID: 46232606)Lithium chloride (PubChem CID: 433294)MJN110 (PubChem CID: N/A)Monoacylglycerol lipase (MAGL)NauseaOleoylethanolamide (PubChem CID: 5283454)Palmitoylethanolamide (PubChem CID: 4671)PF3845 (PubChem CID:Saccharin (PubChem CID: 5143)Tween 80 (PubChem CID: 5281955)URB597 (PubChem CID: 1383884)

Identifiers

PMID26541329
PMCPMC4698202
OpenAlexW1952505674

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.