Evidence map›Paper›PMID 20554448›Full record

ArticleBioorganic & medicinal chemistry2010

Synthesis and biodistribution of [11C]A-836339, a new potential radioligand for PET imaging of cannabinoid type 2 receptors (CB2).

Andrew G Horti, Yongjun Gao, Hayden T Ravert, Paige Finley, Heather Valentine, Dean F Wong, Christopher J Endres, Alena V Savonenko, Robert F Dannals

Abstract read
In one paragraph

Article in Bioorganic & medicinal chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing 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

43 citing papers in PubMed.

  1. Trial
  2. Review
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. First-in-human imaging using [European journal of nuclear medicine and molecular imaging · 2023
    Article
  11. Article
  12. Endocannabinoid System Biomarkers in Alzheimer's Disease.Cannabis and cannabinoid research · 2023
    Article
  13. Review
  14. Review
  15. Towards PET imaging of the dynamic phenotypes of microglia.Clinical and experimental immunology · 2021
    Review
  16. Development of [International journal of molecular sciences · 2021
    Article
  17. Article
  18. Review
  19. Inflammation in Experimental Models of α-Synucleinopathies.Movement disorders : official journal of the Movement Disorder Society · 2021
    Review
  20. CB2 Receptor in Microglia: The Guardian of Self-Control.International journal of molecular sciences · 2020
    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

9 authors.

Andrew G HortiDivision of Nuclear Medicine, Department of Radiology, Johns Hopkins Medical Institutions, 600 North Wolfe Street, Baltimore, MD 21287-0816, USA. ahorti1@jhmi.edu
Yongjun Gao
Hayden T Ravert
Paige Finley
Heather Valentine
Dean F Wong
Christopher J Endres
Alena V Savonenko
Robert F Dannals

Funding

Development of PET radioligands for cerebral cannabinoid receptor (CB1)R33MH079017 · NIMH · JOHNS HOPKINS UNIVERSITY · PI HORTI, ANDREW G · 2009 to 2011
$1.2M
Development of PET radioligands for cerebral cannabinoid receptor (CB1)R21MH079017 · NIMH · JOHNS HOPKINS UNIVERSITY · PI HORTI, ANDREW G · 2007 to 2008
$435k
NIMH NIH HHS MH079017NIMH NIH HHS R21 MH079017NIMH NIH HHS R33 MH079017
6 · The paper itself

Abstract

Recently, A-836339 [2,2,3,3-tetramethylcyclopropanecarboxylic acid [3-(2-methoxyethyl)-4,5-dimethyl-3H-thiazol-(2Z)-ylidene]amide] (1) was reported to be a selective CB2 agonist with high binding affinity. Here we describe the radiosynthesis of [11C]A-836339 ([11C]1) via its desmethyl precursor as a candidate radioligand for imaging CB2 receptors with positron-emission tomography (PET). Whole body and the regional brain distribution of [11C]1 in control CD1 mice demonstrated that this radioligand exhibits specific uptake in the CB2-rich spleen and little specific in vivo binding in the control mouse brain. However, [11C]1 shows specific cerebral uptake in the lipopolysaccharide (LPS)-induced mouse model of neuroinflammation and in the brain areas with Abeta amyloid plaque deposition in a mouse model of Alzheimer's disease (APPswe/PS1dE9 mice). These data establish a proof of principle that CB2 receptors binding in the neuroinflammation and related disorders can be measured in vivo.

Indexed as

Alzheimer DiseaseAmyloidosisAnimalsBrainCarbon RadioisotopesFemaleInflammationMaleMicePositron-Emission TomographyReceptor, Cannabinoid, CB2ThiazolesA-836339Carbon RadioisotopesReceptor, Cannabinoid, CB2Thiazoles

Identifiers

PMID20554448
PMCPMC2903661

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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.