Evidence map›Paper›PMID 16221855›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2005

Endocannabinoid signaling dynamics probed with optical tools.

Thomas Heinbockel, Darrin H Brager, Christian G Reich, Jun Zhao, Sukumaran Muralidharan, Bradley E Alger, Joseph P Y Kao

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

28 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
  2. Article
  3. Synthetic Lipid Biology.Chemical reviews · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. Imaging the endocannabinoid signaling system.Journal of neuroscience methods · 2022
    Review
  8. Article
  9. Integrating Endocannabinoid Signalling In Depression.Journal of molecular neuroscience : MN · 2021
    Review
  10. Epigenetic Effects of Drugs of Abuse.International journal of environmental research and public health · 2018
    Review
  11. Article
  12. Article
  13. Review
  14. Cannabinoids in Parkinson's Disease.Cannabis and cannabinoid research · 2017
    Review
  15. Review
  16. Article
  17. Cellular Mechanisms of Action of Drug Abuse on Olfactory Neurons.International journal of environmental research and public health · 2015
    Review
  18. Endocannabinoids in synaptic plasticity and neuroprotection.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2015
    Review
  19. Article
  20. 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

7 authors at 2 institutions in 2 countries.

Thomas HeinbockelDepartment of Physiology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA.
Darrin H Brager
Christian G Reich
Jun Zhao
Sukumaran Muralidharan
Bradley E Alger
Joseph P Y Kao
University of Maryland, Baltimore · USCzech Academy of Sciences, Institute of Physiology · CZ

Funding

Training Program in Cellular &Integrative NeuroscienceT32NS007375 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI KELLER, ASAF · 1994 to 2013
$4.2M
CAGED PROBES FOR CELLULAR PHYSIOLOGYR01GM056481 · NIGMS · UNIVERSITY OF MD BIOTECHNOLOGY INSTITUTE · PI KAO, JOSEPH PAO YUNG · 1998 to 2009
$3.3M
Endocannabinoids and GABAergic Control of PlasticityR01DA014625 · NIDA · UNIVERSITY OF MARYLAND BALTIMORE · PI ALGER, BRADLEY E · 2001 to 2011
$2.9M
REGULATION OF INHIBITION IN HIPPOCAMPUSR01NS030219 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI ALGER, BRADLEY E · 1991 to 2004
$1.2M
NIDA NIH HHS R01 DA014625NIDA NIH HHS R01 DA14625NIGMS NIH HHS GM56481NIGMS NIH HHS R01 GM056481NINDS NIH HHS R01 NS030219NINDS NIH HHS R01 NS30219NINDS NIH HHS T32 NS007375NINDS NIH HHS T32 NS07375
6 · The paper itself

Abstract

Intercellular signaling dynamics critically influence the functional roles that the signals can play. Small lipids are synthesized and released from neurons, acting as intercellular signals in regulating neurotransmitter release, modulating ion channels on target cells, and modifying synaptic plasticity. The repertoire of biological effects of lipids such as endocannabinoids (eCBs) is rapidly expanding, yet lipid signaling dynamics have not been studied. The eCB system constitutes a powerful tool for bioassaying the dynamics of lipid signaling. The eCBs are synthesized in, and released from, postsynaptic somatodendritic domains that are readily accessible to whole-cell patch electrodes. The dramatic effects of these lipid signals are detected electrophysiologically as CB1-dependent alterations in conventional synaptic transmission, which therefore serve as a sensitive reporter of eCB actions. We used electrophysiological recording, photolytic release of caged glutamate and a newly developed caged AEA (anandamide), together with rapid [Ca2+]i measurements, to investigate the dynamics of retrograde eCB signaling between CA1 pyramidal cells and GABAergic synapses in rat hippocampus in vitro. We show that, at 22 degrees C, eCB synthesis and release must occur within 75-190 ms after the initiating stimulus, almost an order of magnitude faster than previously thought. At 37 degrees C, the time could be < 50 ms. Activation of CB1 and downstream processes constitute a significant fraction of the total delay and are identified as major rate-limiting steps in retrograde signaling. Our findings imply that lipid messenger dynamics are comparable with those of metabotropic neurotransmitters and can modulate neuronal interactions on a similarly fast time scale.

Indexed as

EndocannabinoidsOptics and PhotonicsAnimalsCannabinoid Receptor ModulatorsHippocampusMaleOrgan Culture TechniquesPatch-Clamp TechniquesPhotolysisRatsRats, Sprague-DawleySignal TransductionCannabinoid Receptor ModulatorsEndocannabinoids

Identifiers

PMID16221855
PMCPMC6725697
OpenAlexW2067008518

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.