Evidence map›Paper›PMID 22536451›Full record

ArticlePloS one2012

Enhanced brain disposition and effects of Δ9-tetrahydrocannabinol in P-glycoprotein and breast cancer resistance protein knockout mice.

Adena S Spiro, Alexander Wong, Aurélie A Boucher, Jonathon C Arnold

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

37 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Article
  6. Cannabis Pharmacogenomics: A Path to Personalized Medicine.Current issues in molecular biology · 2023
    Review
  7. Maternal and Fetal Exposure to (-)-ΔDrug metabolism and disposition: the biological fate of chemicals · 2023
    Article
  8. Review
  9. Comparative Pharmacokinetics of ΔCannabis and cannabinoid research · 2022
    Article
  10. Review
  11. The Evolution of Pharmacological ActivitiesPharmaceuticals (Basel, Switzerland) · 2022
    Review
  12. Evaluation of the Possible Anticonvulsant Effect of ΔCannabis and cannabinoid research · 2022
    Article
  13. Article
  14. Article
  15. Development and Verification of a LinkedDrug metabolism and disposition: the biological fate of chemicals · 2021
    Article
  16. Article
  17. Clinical Pharmacokinetics of Cannabinoids and Potential Drug-Drug Interactions.Advances in experimental medicine and biology · 2021
    Article
  18. Interactions between cannabidiol and ΔBritish journal of pharmacology · 2020
    Article
  19. Development of a Physiologically-Based Pharmacokinetic Model of ΔEuropean journal of drug metabolism and pharmacokinetics · 2020
    Article
  20. Comparative Pharmacokinetics of ΔThe Journal of pharmacology and experimental therapeutics · 2020
    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

4 authors at 2 institutions in 1 country.

Adena S SpiroDiscipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia.
Alexander Wong
Aurélie A Boucher
Jonathon C Arnold
University of Sydney · AUSchizophrenia Research Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ABC transporters P-glycoprotein (P-gp, Abcb1) and breast cancer resistance protein (Bcrp, Abcg2) regulate the CNS disposition of many drugs. The main psychoactive constituent of cannabis Δ(9)-tetrahydrocannabinol (THC) has affinity for P-gp and Bcrp, however it is unknown whether these transporters modulate the brain accumulation of THC and its functional effects on the CNS. Here we aim to show that mice devoid of Abcb1 and Abcg2 retain higher brain THC levels and are more sensitive to cannabinoid-induced hypothermia than wild-type (WT) mice. Abcb1a/b (-/-), Abcg2 (-/-) and wild-type (WT) mice were injected with THC before brain and blood were collected and THC concentrations determined. Another cohort of mice was examined for THC-induced hypothermia by measuring rectal body temperature. Brain THC concentrations were higher in both Abcb1a/b (-/-) and Abcg2 (-/-) mice than WT mice. ABC transporter knockout mice exhibited delayed elimination of THC from the brain with the effect being more prominent in Abcg2 (-/-) mice. ABC transporter knockout mice were more sensitive to THC-induced hypothermia compared to WT mice. These results show P-gp and Bcrp prolong the brain disposition and hypothermic effects of THC and offer a novel mechanism for both genetic vulnerability to the psychoactive effects of cannabis and drug interactions between CNS therapies and cannabis.

Indexed as

AnimalsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2BrainDronabinolFemaleHypothermiaMiceMice, KnockoutPsychotropic DrugsAbcb1b protein, mouseAbcg2 protein, mouseATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2DronabinolPsychotropic Drugs

Identifiers

PMID22536451
PMCPMC3335007
OpenAlexW2144471602

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.