Evidence map›Paper›PMID 25363799›Full record

ArticleBritish journal of pharmacology2015

The phytocannabinoid, Δ⁹-tetrahydrocannabivarin, can act through 5-HT₁A receptors to produce antipsychotic effects.

Maria Grazia Cascio, Erica Zamberletti, Pietro Marini, Daniela Parolaro, Roger G Pertwee

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.2field-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

30 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. The Pharmacological Profile of Plant-Derived Cannabinoids In Vitro.Current topics in behavioral neurosciences · 2026
    Review
  5. Tetrahydrocannabivarin is Not Tetrahydrocannabinol.Cannabis and cannabinoid research · 2025
    Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
  11. The Use of Compounds Derived fromInternational journal of molecular sciences · 2024
    Review
  12. The Leu/ValJournal of chemical information and modeling · 2023
    Article
  13. Review
  14. Review
  15. Cannabinoids: Therapeutic Use in Clinical Practice.International journal of molecular sciences · 2022
    Review
  16. Review
  17. Review
  18. Review
  19. Biomedicines · 2021
    Review
  20. Review
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

5 authors at 2 institutions in 2 countries.

Maria Grazia CascioSchool of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK.
Erica Zamberletti
Pietro Marini
Daniela Parolaro
Roger G Pertwee
University of Aberdeen · GBUniversity of Insubria · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThis study aimed to address the questions of whether Δ(9)-tetrahydrocannabivarin (THCV) can (i) enhance activation of 5-HT1 A receptors in vitro and (ii) induce any apparent 5-HT₁A receptor-mediated antipsychotic effects in vivo. EXPERIMENTAL APPROACH: In vitro studies investigated the effect of THCV on targeting by 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT) of 5-HT₁A receptors in membranes obtained from rat brainstem or human 5-HT₁A CHO cells, using [(35)S]-GTPγS and 8-[(3)H]-OH-DPAT binding assays. In vivo studies investigated whether THCV induces signs of 5-HT₁A receptor-mediated antipsychotic effects in rats. KEY

resultsTHCV (i) potently, albeit partially, displaced 8-[(3) H]-OH-DPAT from specific binding sites in rat brainstem membranes; (ii) at 100 nM, significantly enhanced 8-OH-DPAT-induced activation of receptors in these membranes; (iii) produced concentration-related increases in 8-[(3)H]-OH-DPAT binding to specific sites in membranes of human 5-HT₁A receptor-transfected CHO cells; and (iv) at 100 nM, significantly enhanced 8-OH-DPAT-induced activation of these human 5-HT₁A receptors. In phencyclidine-treated rats, THCV, like clozapine (i) reduced stereotyped behaviour; (ii) decreased time spent immobile in the forced swim test; and (iii) normalized hyperlocomotor activity, social behaviour and cognitive performance. Some of these effects were counteracted by the 5-HT₁A receptor antagonist, WAY100635, or could be reproduced by the CB₁ antagonist, AM251. CONCLUSIONS AND IMPLICATIONS: Our findings suggest that THCV can enhance 5-HT₁A receptor activation, and that some of its apparent antipsychotic effects may depend on this enhancement. We conclude that THCV has therapeutic potential for ameliorating some of the negative, cognitive and positive symptoms of schizophrenia.

Indexed as

AnimalsAntipsychotic AgentsCannabinoidsCHO CellsCricetulusDronabinolMaleMolecular Sequence DataMolecular StructureRatsRats, Sprague-DawleyReceptor, Serotonin, 5-HT1ASchizophreniaSchizophrenic PsychologyAntipsychotic AgentsCannabinoidsDronabinolReceptor, Serotonin, 5-HT1Atetrahydrocannabivarin 9

Identifiers

PMID25363799
PMCPMC4337703
OpenAlexW1578697407

What OpenQuestion holds

Textmetadata
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.