Evidence map›Paper›PMID 20393650›Full record

ArticleMolecular bioSystems2010

Characterization of mice lacking candidate N-acyl ethanolamine biosynthetic enzymes provides evidence for multiple pathways that contribute to endocannabinoid production in vivo.

Gabriel M Simon, Benjamin F Cravatt

Open access · greenAbstract read
In one paragraph

Article in Molecular bioSystems, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
11.3field-weighted citation impact, top 1% 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

59 citing papers in PubMed, 132 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Hypothalamic endocannabinoids in obesity: an old story with new challenges.Cellular and molecular life sciences : CMLS · 2021
    Review
  10. Review
  11. Review
  12. Biosynthesis ofInternational journal of molecular sciences · 2020
    Article
  13. Article
  14. Review
  15. Symmetrically substituted dichlorophenes inhibitThe Journal of biological chemistry · 2020
    Article
  16. Article
  17. Druggable Targets in Endocannabinoid Signaling.Advances in experimental medicine and biology · 2020
    Review
  18. Review
  19. Article
  20. The Endocannabinoid System and Heart Disease: The Role of Cannabinoid Receptor Type 2.Cardiovascular & hematological disorders drug targets · 2018
    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

2 authors at 1 institution in 1 country.

Gabriel M SimonThe Department of Chemical Physiology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA.
Benjamin F Cravatt
Scripps Research Institute · US

Funding

SYNTHESIS OF SR141716A AND ANANDAMIDE ANALOGSP01DA009789 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI LICHTMAN, ARON H · 1995 to 2013
$11.6M
STRUCTURAL STUDIES OF FAAHP01DA017259 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI CRAVATT, BENJAMIN F · 2004 to 2013
$10.6M
NIDA NIH HHS P01 DA009789NIDA NIH HHS P01 DA017259
6 · The paper itself

Abstract

The biosynthesis of the endocannabinoid anandamide (AEA) and related N-acyl ethanolamine (NAE) lipids is complex and appears to involve multiple pathways, including: (1) direct release of NAEs from N-acyl phosphatidyl ethanolamine (NAPE) precursors by the phosphodiesterase NAPE-PLD, and (2) double O-deacylation of NAPEs followed by phosphodiester bond hydrolysis of the resulting glycero-phospho (GP)-NAEs. We recently identified GDE1 as a GP-NAE phosphodiesterase that may be involved in the second pathway. Here, we report the generation and characterization of GDE1(-/-) mice, which are viable and overtly normal in their cage behavior. Brain homogenates from GDE1(-/-) mice exhibit a near-complete loss of detectable GP-NAE phosphodiesterase activity; however, bulk brain levels of AEA and other NAEs were unaltered in these animals. To address the possibility of compensatory pathways, we generated GDE1(-/-)/NAPE-PLD(-/-) mice. Conversion of NAPE to NAE was virtually undetectable in brain homogenates from these animals as measured under standard assay conditions, but again, bulk changes in brain NAEs were not observed. Interestingly, significant reductions in the accumulation of brain NAEs, including anandamide, were detected in GDE1(-/-)/NAPE-PLD(-/-) mice treated with a fatty acid amide hydrolase (FAAH) inhibitor that blocks NAE degradation. Finally, we determined that primary neurons from GDE1(-/-)/NAPE-PLD(-/-) mice can convert NAPEs to NAEs by a pathway that is not preserved following cell homogenization. In summary, combined inactivation of GDE1 and NAPE-PLD results in partial disruption of NAE biosynthesis, while also pointing to the existence of an additional enzymatic pathway(s) that converts NAPEs to NAEs. Characterization of this pathway should provide clarity on the multifaceted nature of NAE biosynthesis.

Indexed as

EndocannabinoidsAnimalsAnimals, NewbornCannabinoid Receptor ModulatorsEthanolaminesFemaleLipid MetabolismMiceMice, Inbred C57BLMice, KnockoutModels, BiologicalNeuronsPhospholipase DPhosphoric Diester HydrolasesSignal TransductionCannabinoid Receptor ModulatorsEndocannabinoidsEthanolaminesglycerophosphodiester phosphodiesteraseN-acylethanolaminesNapepld protein, mousePhospholipase DPhosphoric Diester Hydrolases

Identifiers

PMID20393650
PMCPMC2946841
OpenAlexW2146761165

What OpenQuestion holds

Textmetadata
LicenceTDM
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.