Evidence map›Paper›PMID 23712084›Full record

ArticleBioorganic & medicinal chemistry2013

Development and characterization of a promising fluorine-18 labelled radiopharmaceutical for in vivo imaging of fatty acid amide hydrolase.

Oleg Sadovski, Justin W Hicks, Jun Parkes, Roger Raymond, José Nobrega, Sylvain Houle, Mariateresa Cipriano, Christopher J Fowler, Neil Vasdev, Alan A Wilson

Open access · hybridAbstract read
In one paragraph

Article in Bioorganic & medicinal chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

16 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Radiopharmaceuticals and their applications in medicine.Signal transduction and targeted therapy · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. In Vitro and in Vivo Evaluation ofJournal of medicinal chemistry · 2018
    Article
  7. (Radio)fluoroclick Reaction Enabled by a Hydrogen-Bonding Cluster.Angewandte Chemie (International ed. in English) · 2018
    Article
  8. Inhibition of fatty acid amide hydrolase by BIA 10-2474 in rat brain.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. 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

10 authors at 4 institutions in 3 countries.

Oleg SadovskiResearch Imaging Centre, Centre for Addiction and Mental Health, 250 College St., Toronto, ON M5T 1R8, Canada.
Justin W Hicks
Jun Parkes
Roger Raymond
José Nobrega
Sylvain Houle
Mariateresa Cipriano
Christopher J Fowler
Neil Vasdev
Alan A Wilson
Centre for Addiction and Mental Health · CAUmeå University · SEHarvard University · USUniversity of Toronto · CA

Funding

Novel Radiotracers for Positron Emission Tomography Imaging of Fatty Acid Amide HR21MH094424 · NIMH · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI WILSON, ALAN ALEXANDER · 2011 to 2013
$426k
NIMH NIH HHS 1R21MH094424NIMH NIH HHS R21 MH094424
6 · The paper itself

Abstract

Fatty acid amide hydrolase (FAAH), the enzyme responsible for terminating signaling by the endocannabinoid anandamide, plays an important role in the endocannabinoid system, and FAAH inhibitors are attractive drugs for pain, addiction, and neurological disorders. The synthesis, radiosynthesis, and evaluation, in vitro and ex vivo in rat, of an (18)F-radiotracer designed to image FAAH using positron emission tomography (PET) is described. Fluorine-18 labelled 3-(4,5-dihydrooxazol-2-yl)phenyl (5-fluoropentyl)carbamate, [(18)F]5, was synthesized at high specific activity in a one-pot three step reaction using a commercial module with a radiochemical yield of 17-22% (from [(18)F]fluoride). In vitro assay using rat brain homogenates showed that 5 inhibited FAAH in a time-dependent manner, with an IC50 value of 0.82nM after a preincubation of 60min. Ex vivo biodistribution studies and ex vivo autoradiography in rat brain demonstrated that [(18)F]5 had high brain penetration with standard uptake values of up to 4.6 and had a regional distribution which correlated with reported regional FAAH enzyme activity. Specificity of binding to FAAH with [(18)F]5 was high (>90%) as demonstrated by pharmacological challenges with potent and selective FAAH inhibitors and was irreversible as demonstrated by radioactivity measurements on homogenized brain tissue extracts. We infer from these results that [(18)F]5 is a highly promising candidate radiotracer with which to image FAAH in human subjects using PET and clinical studies are proceeding.

Indexed as

AmidohydrolasesAnimalsBrainCarbamatesChromatography, High Pressure LiquidFatty Acid Amide HydrolasesFluorine RadioisotopesHumansMolecular StructureOxazolesRadionuclide ImagingRadiopharmaceuticalsRatsTissue Distribution3-(4,5-dihydrooxazol-2-yl)phenyl (5-fluoropentyl)carbamateAmidohydrolasesCarbamatesFatty Acid Amide HydrolasesFluorine RadioisotopesOxazolesRadiopharmaceuticals

Identifiers

PMID23712084
PMCPMC3683374
OpenAlexW2067001382

What OpenQuestion holds

Textmetadata
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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.