Evidence map›Paper›PMID 29457829›Full record

ArticleBritish journal of pharmacology2019

Species-specific susceptibility to cannabis-induced convulsions.

Benjamin J Whalley, Hong Lin, Lynne Bell, Thomas Hill, Amesha Patel, Roy A Gray, C Elizabeth Roberts, Orrin Devinsky, Michael Bazelot, Claire M Williams and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 50 citations in OpenAlex.

  1. Cats and cannabinoids: past, present and future.Journal of feline medicine and surgery · 2025
    Review
  2. Article
  3. Pharmacokinetics of cannabidiol, (-)-Frontiers in veterinary science · 2025
    Article
  4. The effects of cannabidiol and its main metabolites on human neural stem cells.Experimental biology and medicine (Maywood, N.J.) · 2025
    Article
  5. Review
  6. The Canadian veterinary journal = La revue veterinaire canadienne · 2024
    Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Correction to: The Potential Proconvulsant Effects of Cannabis: a Scoping Review.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2023
    Article
  12. The Potential Proconvulsant Effects of Cannabis: a Scoping Review.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2022
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Interactions between cannabidiol and ΔBritish journal of pharmacology · 2020
    Article
  19. Article
  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

11 authors at 4 institutions in 3 countries.

Benjamin J WhalleyDivision of Pharmacology, School of Chemistry, Food and Nutritional Sciences, and Pharmacy, University of Reading, Reading, UK.
Hong LinDivision of Pharmacology, School of Chemistry, Food and Nutritional Sciences, and Pharmacy, University of Reading, Reading, UK.
Lynne BellSchool of Psychology and Clinical Language Sciences, University of Reading, Reading, UK.
Thomas HillPhysiology & Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.
Amesha PatelGW Research Ltd, Salisbury, UK.
Roy A GrayGW Research Ltd, Salisbury, UK.
C Elizabeth RobertsGW Research Ltd, Salisbury, UK.
Orrin DevinskyDepartment of Neurology, Comprehensive Epilepsy Center, New York University School of Medicine, New York, NY, USA.
Michael BazelotGW Research Ltd, Salisbury, UK.
Claire M WilliamsSchool of Psychology and Clinical Language Sciences, University of Reading, Reading, UK.
Gary J StephensDivision of Pharmacology, School of Chemistry, Food and Nutritional Sciences, and Pharmacy, University of Reading, Reading, UK.ORCID 0000-0002-8966-4238
University of Reading · GBGW Pharmaceuticals (United Kingdom) · GBNew York University · USRoyal College of Surgeons in Ireland · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeNumerous claims are made for cannabis' therapeutic utility upon human seizures, but concerns persist about risks. A potential confounder is the presence of both Δ EXPERIMENTAL APPROACH: Cannabis extract effects on in vivo neurological and behavioural responses, and on bioanalyte levels, were measured in rats and dogs. Extract effects on seizure activity were measured using electroencephalography telemetry in rats. eCB signalling was also investigated using radioligand binding in cannabis extract-treated rats and treatment-naïve rat, mouse, chicken, dog and human tissue. KEY

resultsProlonged exposure to cannabis extracts caused spontaneous, generalized seizures, subserved by epileptiform discharges in rats, but not dogs, and produced higher THC, but lower 11-hydroxy-THC (11-OH-THC) and CBD, plasma concentrations in rats versus dogs. In the same rats, prolonged exposure to cannabis also impaired cannabinoid type 1 receptor (CB CONCLUSIONS AND IMPLICATIONS: Sustained cannabis extract treatment caused differential seizure, behavioural and bioanalyte levels between rats and dogs. Supporting radioligand binding data suggest species differences in eCB signalling. Interspecies variations may have important implications for predicting cannabis-induced convulsions from animal models. LINKED ARTICLES: This article is part of a themed section on 8

Indexed as

AnimalsBehavior, AnimalCannabinoidsCannabisDogsDose-Response Relationship, DrugFemaleMaleRatsRats, WistarReceptor, Cannabinoid, CB1SeizuresSignal TransductionSpecies SpecificityCannabinoidsReceptor, Cannabinoid, CB1

Identifiers

PMID29457829
PMCPMC6487554
OpenAlexW2790644010

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.