Evidence map›Paper›PMID 33379862›Full record

ReviewJournal of medicinal chemistry2021

Positron Emission Tomography Imaging of the Endocannabinoid System: Opportunities and Challenges in Radiotracer Development.

Lu Hou, Jian Rong, Achi Haider, Daisuke Ogasawara, Cassis Varlow, Michael A Schafroth, Linjing Mu, Jiefeng Gan, Hao Xu, Christopher J Fowler and 6 more

Abstract readReview
In one paragraph

Review in Journal of medicinal chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

  1. Article
  2. Review
  3. Chemical Probes for Investigating the Endocannabinoid System.Current topics in behavioral neurosciences · 2026
    Review
  4. Development of a novelActa pharmaceutica Sinica. B · 2025
    Article
  5. Article
  6. Article
  7. Fatty acid amide hydrolase in major depressive episodes: A [Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  8. Article
  9. Review
  10. Radiopharmaceuticals and their applications in medicine.Signal transduction and targeted therapy · 2025
    Review
  11. Article
  12. Development and evaluation of deuterated [EJNMMI radiopharmacy and chemistry · 2024
    Article
  13. NIMH perspectives on future directions in neuroimaging for mental health.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Review
  14. Article
  15. Article
  16. Neuroimaging Biomarkers in Addiction.medRxiv : the preprint server for health sciences · 2024
    Article
  17. Review
  18. Review
  19. Article
  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

16 authors.

Lu HouCenter of Cyclotron and PET Radiopharmaceuticals, Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University, 613 West Huangpu Road, Tianhe District, Guangzhou 510630, China.
Jian RongDivision of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, and Department of Radiology, Harvard Medical School, Boston, Massachusetts 02114, United States.
Achi HaiderDivision of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, and Department of Radiology, Harvard Medical School, Boston, Massachusetts 02114, United States.
Daisuke OgasawaraThe Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, SR107, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.
Cassis VarlowAzrieli Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, and Department of Psychiatry/Institute of Medical Science, University of Toronto, 250 College Street, Toronto, M5T 1R8 ON, Canada.
Michael A SchafrothThe Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, SR107, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.ORCID 0000-0002-5864-6766
Linjing MuCenter for Radiopharmaceutical Sciences of ETH, PSI, and USZ, and Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland.
Jiefeng GanCenter of Cyclotron and PET Radiopharmaceuticals, Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University, 613 West Huangpu Road, Tianhe District, Guangzhou 510630, China.
Hao XuCenter of Cyclotron and PET Radiopharmaceuticals, Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University, 613 West Huangpu Road, Tianhe District, Guangzhou 510630, China.
Christopher J FowlerDepartment of Pharmacology and Clinical Neuroscience, Umeå University, SE-901 87 Umeå, Sweden.
Ming-Rong ZhangDepartment of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan.ORCID 0000-0002-3001-9605
Neil VasdevDivision of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, and Department of Radiology, Harvard Medical School, Boston, Massachusetts 02114, United States.ORCID 0000-0002-2087-5125
Simon AmetameyCenter for Radiopharmaceutical Sciences of ETH, PSI, and USZ, and Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland.ORCID 0000-0003-4285-6731
Benjamin F CravattThe Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, SR107, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.ORCID 0000-0001-5330-3492
Lu WangCenter of Cyclotron and PET Radiopharmaceuticals, Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University, 613 West Huangpu Road, Tianhe District, Guangzhou 510630, China.ORCID 0000-0002-8049-1991
Steven H LiangDivision of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, and Department of Radiology, Harvard Medical School, Boston, Massachusetts 02114, United States.ORCID 0000-0003-1413-6315

Funding

CHEMOPROTEOMIC METHODS FOR SERINE HYDROLASE INHIBITOR DEVELOPMENTR01DA033760 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI CRAVATT, BENJAMIN F, SCAMPAVIA, LOUIS DANIEL · 2012 to 2021
$5.1M
Translation of tau-selective PET radiopharmaceuticals in Alzheimers patientsR01AG052414 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI PRICE, JULIE C, VASDEV, NEIL · 2018 to 2021
$2.7M
Neuro-PET Radiotracer Discovery for Imaging Glycogen Synthase Kinase-3R01AG054473 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI VASDEV, NEIL · 2017 to 2020
$1.7M
New PET tracers for neuroimaging of FAAH in endocannabinoid signalingK01DA038000 · NIDA · MASSACHUSETTS GENERAL HOSPITAL · PI LIANG, STEVEN H · 2014 to 2018
$927k
Novel PET Tracers for Imaging Monoacylglycerol Lipase in Endocannabinoid SignalingR33DA043507 · NIDA · MASSACHUSETTS GENERAL HOSPITAL · PI LIANG, STEVEN H · 2019 to 2021
$851k
Novel PET Tracers for Imaging Monoacylglycerol Lipase in Endocannabinoid SignalingR21DA043507 · NIDA · MASSACHUSETTS GENERAL HOSPITAL · PI LIANG, STEVEN H · 2017 to 2018
$425k
NIA NIH HHS R01 AG052414NIA NIH HHS R01 AG054473NIDA NIH HHS K01 DA038000NIDA NIH HHS R01 DA033760NIDA NIH HHS R21 DA043507NIDA NIH HHS R33 DA043507
6 · The paper itself

Abstract

The endocannabinoid system (ECS) is involved in a wide range of biological functions and comprises cannabinoid receptors and enzymes responsible for endocannabinoid synthesis and degradation. Over the past 2 decades, significant advances toward developing drugs and positron emission tomography (PET) tracers targeting different components of the ECS have been made. Herein, we summarized the recent development of PET tracers for imaging cannabinoid receptors 1 (CB1R) and 2 (CB2R) as well as the key enzymes monoacylglycerol lipase (MAGL) and fatty acid amide hydrolase (FAAH), particularly focusing on PET neuroimaging applications. State-of-the-art PET tracers for the ECS will be reviewed including their chemical design, pharmacological properties, radiolabeling, as well as preclinical and human PET imaging. In addition, this review addresses the current challenges for ECS PET biomarker development and highlights the important role of PET ligands to study disease pathophysiology as well as to facilitate drug discovery.

Indexed as

AmidohydrolasesAnimalsBiomarkersBrainEndocannabinoidsEnzyme InhibitorsFatty Acid Amide HydrolasesHumansPositron-Emission TomographyReceptors, CannabinoidAmidohydrolasesBiomarkersEndocannabinoidsEnzyme InhibitorsFatty Acid Amide HydrolasesReceptors, Cannabinoid

Identifiers

PMID33379862
PMCPMC7877880

What OpenQuestion holds

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Registered trials

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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.