Evidence map›Paper›PMID 12663750›Full record

ArticleLearning & memory (Cold Spring Harbor, N.Y.)

Activation of the cannabinoid receptor type 1 decreases glutamatergic and GABAergic synaptic transmission in the lateral amygdala of the mouse.

Shahnaz Christina Azad, Matthias Eder, Giovanni Marsicano, Beat Lutz, Walter Zieglgänsberger, Gerhard Rammes

Registry-linked trialOpen access · diamondAbstract read
In one paragraph

Article in Learning & memory (Cold Spring Harbor, N.Y.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00377468 (Low Dose Administration of Delta9-Tetrahydrocannabinol for the Prevention of Hyperalgesia and Chronic Pain in Patients With Acute Complex Regional Pain Syndrome), which is not on this map. Cited by 92 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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.

NCT00377468 phase2unknown statusnot on this map

Low Dose Administration of Delta9-Tetrahydrocannabinol for the Prevention of Hyperalgesia and Chronic Pain in Patients With Acute Complex Regional Pain Syndrome (CRPS) of the Upper Limb

TypeinterventionalSponsorLudwig-Maximilians - University of MunichRan2006 to 2008Enrolled100ConditionsComplex Regional Pain Syndromes, CRPSArmsDelta9-Tetrahydrocannabinol
3 · Its place in the literature

Who cites it

92 citing papers in PubMed, 1 synthesis or guideline pooled it, 217 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Review
  7. Article
  8. Endocannabinoids at the synapse and beyond: implications for neuropsychiatric disease pathophysiology and treatment.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Review
  9. Effects of Δ9-Tetrahydrocannibinol (THC) on Obesity at Different Stages of Life: A Literature Review.International journal of environmental research and public health · 2022
    Review
  10. Review
  11. Review
  12. Article
  13. Impairment of Synaptic Plasticity by Cannabis, ΔCold Spring Harbor perspectives in medicine · 2021
    Review
  14. The endocannabinoid system in the amygdala and modulation of fear.Progress in neuro-psychopharmacology & biological psychiatry · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Stress-induced modulation of endocannabinoid signaling leads to delayed strengthening of synaptic connectivity in the amygdala.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  19. Article
  20. Article

32 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

6 authors at 2 institutions in 1 country.

Shahnaz Christina AzadMax-Planck-Institute of Psychiatry, Clinical Neuropharmacology, Kraepelinstrasse 2-10, 80804 Munich, Germany. azad@mpipsykl.mpg.de
Matthias Eder
Giovanni Marsicano
Beat Lutz
Walter Zieglgänsberger
Gerhard Rammes
Ludwig-Maximilians-Universität München · DEMax Planck Institute of Psychiatry · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The endogenous cannabinoid system has been shown recently to play a crucial role in the extinction of aversive memories. As the amygdala is presumably involved in this process, we investigated the effects of the cannabinoid receptor agonist WIN 55,212-2 (WIN-2) on synaptic transmission in the lateral amygdala (LA) of wild-type and cannabinoid receptor type 1 (CB1)-deficient mice. Extracellular field potential recordings and patch-clamp experiments were performed in an in vitro slice preparation. We found that WIN-2 reduces basal synaptic transmission and pharmacologically isolated AMPA receptor- and GABA(A) receptor-mediated postsynaptic currents in wild-type, but not in CB1-deficient mice. These results indicate that, in the LA, cannabinoids modulate both excitatory and inhibitory synaptic transmission via CB1. WIN-2-induced changes of paired-pulse ratio and of spontaneous and miniature postsynaptic currents suggest a presynaptic site of action. Inhibition of G(i/o) proteins and blockade of voltage-dependent and G protein-gated inwardly rectifying K(+) channels inhibited WIN-2 action on basal synaptic transmission. In contrast, modulation of the adenylyl cyclase-protein kinase A pathway, and blockade of presynaptic N- and P/Q- or of postsynaptic L- and R/T-type voltage-gated Ca(2+) channels did not affect WIN-2 effects. Our results indicate that the mechanisms underlying cannabinoid action in the LA partly resemble those observed in the nucleus accumbens and differ from those described for the hippocampus.

Indexed as

Synaptic TransmissionAmygdalaAnalgesicsAnimalsBenzoxazinesCalcium ChannelsElectrophysiologyExcitatory Postsynaptic Potentialsgamma-Aminobutyric AcidGlutamic AcidMaleMiceMice, Inbred C57BLMice, TransgenicMorpholinesNaphthalenes(3R)-((2,3-dihydro-5-methyl-3-((4-morpholinyl)methyl)pyrrolo-(1,2,3-de)-1,4-benzoxazin-6-yl)(1-naphthalenyl))methanoneAnalgesicsBenzoxazinesCalcium Channelsgamma-Aminobutyric AcidGlutamic AcidMorpholinesNaphthalenesPotassium ChannelsReceptors, AMPAReceptors, CannabinoidReceptors, DrugReceptors, GABA-A

Identifiers

PMID12663750
PMCPMC196665
OpenAlexW2134429437

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.