Evidence map›Paper›PMID 20505775›Full record

Trial reportPloS one2010

Motion sickness, stress and the endocannabinoid system.

Alexander Choukèr, Ines Kaufmann, Simone Kreth, Daniela Hauer, Matthias Feuerecker, Detlef Thieme, Michael Vogeser, Manfred Thiel, Gustav Schelling

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
8.1field-weighted citation impact, top 2% 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

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 139 citations in OpenAlex.

  1. Pooled it
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  8. Acute stress increases circulating anandamide and other N-acylethanolamines in healthy humans.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2012
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  15. Treats containing cannabidiol, L-tryptophan andFrontiers in veterinary science · 2025
    Article
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  19. A review of the auditory-gut-brain axis.Frontiers in neuroscience · 2023
    Review
  20. Cannabidiol Interferes with Establishment of ΔCannabis and cannabinoid research · 2022
    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

9 authors at 3 institutions in 1 country.

Alexander ChoukèrDepartment of Anesthesiology, Ludwig-Maximilians-University, Munich, Germany.
Ines Kaufmann
Simone Kreth
Daniela Hauer
Matthias Feuerecker
Detlef Thieme
Michael Vogeser
Manfred Thiel
Gustav Schelling
Ludwig-Maximilians-Universität München · DEInstitute for Sports Medicine · DEUniversity Hospital Heidelberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA substantial number of individuals are at risk for the development of motion sickness induced nausea and vomiting (N&V) during road, air or sea travel. Motion sickness can be extremely stressful but the neurobiologic mechanisms leading to motion sickness are not clear. The endocannabinoid system (ECS) represents an important neuromodulator of stress and N&V. Inhibitory effects of the ECS on N&V are mediated by endocannabinoid-receptor activation. METHODOLOGY/PRINCIPAL

findingsWe studied the activity of the ECS in human volunteers (n = 21) during parabolic flight maneuvers (PFs). During PFs, microgravity conditions (<10(-2) g) are generated for approximately 22 s which results in a profound kinetic stimulus. Blood endocannabinoids (anandamide and 2-arachidonoylglycerol, 2-AG) were measured from blood samples taken in-flight before start of the parabolic maneuvers, after 10, 20, and 30 parabolas, in-flight after termination of PFs and 24 h later. Volunteers who developed acute motion sickness (n = 7) showed significantly higher stress scores but lower endocannabinoid levels during PFs. After 20 parabolas, blood anandamide levels had dropped significantly in volunteers with motion sickness (from 0.39+/-0.40 to 0.22+/-0.25 ng/ml) but increased in participants without the condition (from 0.43+/-0.23 to 0.60+/-0.38 ng/ml) resulting in significantly higher anandamide levels in participants without motion sickness (p = 0.02). 2-AG levels in individuals with motion sickness were low and almost unchanged throughout the experiment but showed a robust increase in participants without motion sickness. Cannabinoid-receptor 1 (CB1) but not cannabinoid-receptor 2 (CB2) mRNA expression in leucocytes 4 h after the experiment was significantly lower in volunteers with motion sickness than in participants without N&V. CONCLUSIONS/SIGNIFICANCE: These findings demonstrate that stress and motion sickness in humans are associated with impaired endocannabinoid activity. Enhancing ECS signaling may represent an alternative therapeutic strategy for motion sickness in individuals who do not respond to currently available treatments.

Indexed as

EndocannabinoidsStress, PhysiologicalAdultAircraftCannabinoid Receptor ModulatorsDemographyGene Expression RegulationHumansHydrocortisoneHypothalamo-Hypophyseal SystemMaleMotion SicknessNauseaPituitary-Adrenal SystemReceptors, CannabinoidCannabinoid Receptor ModulatorsEndocannabinoidsHydrocortisoneReceptors, Cannabinoid

Identifiers

PMID20505775
PMCPMC2873996
OpenAlexW1975963773

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.