Evidence map›Paper›PMID 34918950›Full record

ReviewCannabis and cannabinoid research2022

Endocannabinoid System of the Blood-Brain Barrier: Current Understandings and Therapeutic Potentials.

Kofi Hagan, Panayiotis Varelas, HaiAn Zheng

Open access · greenAbstract readReview
In one paragraph

Review in Cannabis and cannabinoid research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 18% 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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Ageing, Neurodegeneration and the Endocannabinoid System.Current topics in behavioral neurosciences · 2026
    Review
  5. Review
  6. Article
  7. Review
  8. mBio · 2025
    Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Current Challenges and Opportunities for Improved Cannabidiol Solubility.International journal of molecular sciences · 2023
    Article
  15. Article
  16. Review
  17. 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

3 authors at 2 institutions in 1 country.

Kofi HaganDepartment of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Albany, New York, USA.
Panayiotis VarelasDepartment of Neurology, Albany Medical College, Albany, New York, USA.
HaiAn ZhengDepartment of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Albany, New York, USA.
Albany College of Pharmacy and Health Sciences · USAlbany Medical Center Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The endocannabinoid system (ECS) has been found at the blood-brain barrier (BBB), as Cannabinoid receptors were characterized in human brain microvascular endothelial cells and astrocytes. In several

Indexed as

Blood-Brain BarrierCannabinoidsEndocannabinoidsEndothelial CellsHumansReceptors, CannabinoidCannabinoidsEndocannabinoidsReceptors, Cannabinoidblood–brain barrierdrug interactionhuman brain microvascular cellsischemiapermeabilitystroke

Identifiers

PMID34918950
PMCPMC9587775
OpenAlexW4200254530

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.