Evidence map›Paper›PMID 21505478›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2011

N-arachidonoyl-L-serine is neuroprotective after traumatic brain injury by reducing apoptosis.

Ayelet Cohen-Yeshurun, Victoria Trembovler, Alexander Alexandrovich, Erik Ryberg, Peter J Greasley, Raphael Mechoulam, Esther Shohami, Ronen R Leker

Open access · greenAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Biomolecules · 2019
    Review
  7. Article
  8. Role of CBJournal of neurotrauma · 2019
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Cannabinoids in Neurodegenerative Disorders and Stroke/Brain Trauma: From Preclinical Models to Clinical Applications.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2015
    Review
  14. Humanin Derivatives Inhibit Necrotic Cell Death in Neurons.Molecular medicine (Cambridge, Mass.) · 2015
    Article
  15. Palmitoyl Serine: An Endogenous Neuroprotective Endocannabinoid-Like Entity After Traumatic Brain Injury.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2015
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

8 authors at 3 institutions in 2 countries.

Ayelet Cohen-YeshurunDepartment of Pharmacology, Institute of Drug Research, Medical Faculty, Hebrew University of Jerusalem, Jerusalem, Israel.
Victoria Trembovler
Alexander Alexandrovich
Erik Ryberg
Peter J Greasley
Raphael Mechoulam
Esther Shohami
Ronen R Leker
Hebrew University of Jerusalem · ILAstraZeneca (Sweden) · SEHadassah Medical Center · IL

Funding

SYNTHESIS OF SR141716A AND ANANDAMIDE ANALOGSP01DA009789 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI CRAVATT, BENJAMIN F · 1995 to 2013
$11.6M
NIDA NIH HHS DA-9789NIDA NIH HHS P01 DA009789
6 · The paper itself

Abstract

N-arachidonoyl-L-serine (AraS) is a brain component structurally related to the endocannabinoid family. We investigated the neuroprotective effects of AraS following closed head injury induced by weight drop onto the exposed fronto-parietal skull and the mechanisms involved. A single injection of AraS following injury led to a significant improvement in functional outcome, and to reduced edema and lesion volume compared with vehicle. Specific antagonists to CB2 receptors, transient receptor potential vanilloid 1 (TRPV1) or large conductance calcium-activated potassium (BK) channels reversed these effects. Specific binding assays did not indicate binding of AraS to the GPR55 cannabinoid receptor. N-arachidonoyl-L-serine blocked the attenuation in phosphorylated extracellular-signal-regulated kinase 1/2 (ERK) levels and led to an increase in pAkt in both the ipsilateral and contralateral cortices. Increased levels of the prosurvival factor Bcl-xL were evident 24 hours after injury in AraS-treated mice, followed by a 30% reduction in caspase-3 activity, measured 3 days after injury. Treatment with a CB2 antagonist, but not with a CB1 antagonist, reversed this effect. Our results suggest that administration of AraS leads to neuroprotection via ERK and Akt phosphorylation and induction of their downstream antiapoptotic pathways. These protective effects are related mostly to indirect signaling via the CB2R and TRPV1 channels but not through CB1 or GPR55 receptors.

Indexed as

AnimalsApoptosisArachidonic AcidsBrain InjuriesMaleMiceMitogen-Activated Protein Kinase 3Neuroprotective AgentsProto-Oncogene Proteins c-aktReceptor, Cannabinoid, CB2Recovery of FunctionSerineTRPV Cation ChannelsArachidonic AcidsMitogen-Activated Protein Kinase 3N-arachidonoyl L-serineNeuroprotective AgentsProto-Oncogene Proteins c-aktReceptor, Cannabinoid, CB2SerineTRPV1 receptorTRPV Cation Channels

Identifiers

PMID21505478
PMCPMC3170948
OpenAlexW2091025118

What OpenQuestion holds

Textmetadata
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.