Evidence map›Paper›PMID 15548655›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2004

Presynaptic Cav2.1 and Cav2.2 differentially influence release dynamics at hippocampal excitatory synapses.

Anita Scheuber, Richard Miles, Jean Christophe Poncer

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–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.

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

21 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Heat But Not Mechanical Hypersensitivity Depends on Voltage-Gated CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Short-Term Facilitation at a Detonator Synapse Requires the Distinct Contribution of Multiple Types of Voltage-Gated Calcium Channels.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Presynaptic but not postsynaptic GABA signaling at unitary mossy fiber synapses.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  17. Article
  18. Article
  19. Ca2+ current versus Ca2+ channel cooperativity of exocytosis.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
    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

3 authors.

Anita ScheuberInstitut National de la Santé et de la Recherche Médicale, Equipe Mixte 224 Cortex et Epilepsie, Centre Hospitalier Universitaire Pitié-Salpêtrière, 75013 Paris, France.
Richard Miles
Jean Christophe Poncer

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Presynaptic calcium influx at most excitatory central synapses is carried by both Cav2.1 and Cav2.2 channels. The kinetics and modulation of Cav2.1 and Cav2.2 channels differ and may affect presynaptic calcium influx. We compared release dynamics at CA3/CA1 synapses in rat hippocampus after selective blockade of either channel subtype and subsequent quantal content restoration. Selective blockade of Cav2.1 channels enhanced paired-pulse facilitation, whereas blockade of Cav2.2 channels decreased it. This effect was observed at short (50 msec) but not longer (500 msec) intervals and was maintained during prolonged bursts of presynaptic activity. It did not reflect differences in the distance of the channels from the calcium sensor. The suppression of this effect by preincubation with the G(o/i)-protein inhibitor pertussis toxin suggests instead that high-frequency stimulation relieves inhibition of Cav2.2 by G(o/i), thereby increasing the number of available channels.

Indexed as

AnimalsCalciumCalcium Channel BlockersCalcium Channels, N-TypeCalcium Channels, P-TypeCalcium Channels, Q-TypeElectric StimulationGTP-Binding Protein alpha Subunits, Gi-GoHippocampusIn Vitro TechniquesPatch-Clamp TechniquesRatsRats, Sprague-DawleySynapsesSynaptic TransmissionCalciumCalcium Channel BlockersCalcium Channels, N-TypeCalcium Channels, P-TypeCalcium Channels, Q-TypeGTP-Binding Protein alpha Subunits, Gi-Go

Identifiers

PMID15548655
PMCPMC6730307

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.