Evidence map›Paper›PMID 26956082›Full record

ArticleBiochimica et biophysica acta2016

Lipidomics profile of a NAPE-PLD KO mouse provides evidence of a broader role of this enzyme in lipid metabolism in the brain.

Emma Leishman, Ken Mackie, Serge Luquet, Heather B Bradshaw

Open access · greenAbstract read
In one paragraph

Article in Biochimica et biophysica acta, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
13.2field-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

72 citing papers in PubMed, 117 citations in OpenAlex.

  1. Trial
  2. bioRxiv : the preprint server for biology · 2026
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  4. Palmitoylethanolamide in Human and Animal Obesity.Molecules (Basel, Switzerland) · 2026
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  9. FAAH and MAGL inhibition: Evolving approaches to treating substance use disorders.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
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  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article

12 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 2 countries.

Emma LeishmanDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
Ken MackieDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA; Gill Center for Biomolecular Neuroscience, Indiana University, Bloomington, IN, USA.
Serge LuquetUniversité Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75205 Paris, France.
Heather B BradshawDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA. Electronic address: hbbradsh@indiana.edu.
Indiana University Bloomington · USCentre National de la Recherche Scientifique · FR

Funding

Neuronal cannabinoidsR01DA011322 · NIDA · UNIVERSITY OF WASHINGTON · PI MACKIE, KENNETH · 1998 to 2014
$3.4M
Cannabinoid Modulation of Cell FunctionK05DA021696 · NIDA · TRUSTEES OF INDIANA UNIVERSITY · PI MACKIE, KENNETH · 2007 to 2017
$1.3M
Harnessing endogenous cannabinoids for ocular healthR01EY024625 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI STRAIKER, ALEXANDER J · 2014 to 2017
$1.3M
NEI NIH HHS EY024625NEI NIH HHS R01 EY024625NIDA NIH HHS DA011322NIDA NIH HHS DA021696NIDA NIH HHS K05 DA021696NIDA NIH HHS R01 DA011322
6 · The paper itself

Abstract

A leading hypothesis of N-acyl ethanolamine (NAE) biosynthesis, including the endogenous cannabinoid anandamide (AEA), is that it depends on hydrolysis of N-acyl-phosphatidylethanolamines (NAPE) by a NAPE-specific phospholipase D (NAPE-PLD). Thus, deletion of NAPE-PLD should attenuate NAE levels. Previous analyses of two different NAPE-PLD knockout (KO) strains produced contradictory data on the importance of NAPE-PLD to AEA biosynthesis. Here, we examine this hypothesis with a strain of NAPE-PLD KO mice whose lipidome is uncharacterized. Using HPLC/MS/MS, over 70 lipids, including the AEA metabolite, N-arachidonoyl glycine (NAGly), the endocannabinoid 2-arachidonyl glycerol (2-AG) and prostaglandins (PGE(2) and PGF(2α)), and over 60 lipoamines were analyzed in 8 brain regions of KO and wild-type (WT) mice. Lipidomics analysis of this third NAPE-PLD KO strain shows a broad range of lipids that were differentially affected by lipid species and brain region. Importantly, all 6 NAEs measured were significantly reduced, though the magnitude of the effect varied by fatty acid saturation length and brain region. 2-AG levels were only impacted in the brainstem, where levels were significantly increased in KO mice. Correspondingly, levels of arachidonic acid were significantly decreased exclusively in brainstem. NAGly levels were significantly increased in 4 brain regions and levels of PGE(2) increased in 6 of 8 brain regions in KO mice. These data indicate that deletion of NAPE-PLD has far broader effects on the lipidome than previously recognized. Therefore, behavioral characteristics of suppressing NAPE-PLD activity may be due to a myriad of effects on lipids and not simply due to reduced AEA biosynthesis.

Indexed as

Lipid MetabolismAnimalsArachidonic AcidArachidonic AcidsBrainBrain StemCerebellumCerebral CortexChromatography, High Pressure LiquidCorpus StriatumDinoprostDinoprostoneEndocannabinoidsEthanolaminesGlyceridesGlycineanandamideArachidonic AcidArachidonic AcidsDinoprostDinoprostoneEndocannabinoidsEthanolaminesGlyceridesglyceryl 2-arachidonateGlycineLipidsN-acylethanolaminesNapepld protein, mouseN-arachidonylglycinePhosphatidylethanolaminesPhospholipase DPolyunsaturated AlkamidesAnandamideEndogenous cannabinoid biosynthesisLipidomicsLipoamineNAPE-PLD

Identifiers

PMID26956082
PMCPMC4909477
OpenAlexW2295029605

What OpenQuestion holds

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Read underepoch 390

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.