Evidence map›Paper›PMID 9769416›Full record

ArticleThe Journal of physiology1998

Facilitation of the presynaptic calcium current at an auditory synapse in rat brainstem.

M F Cuttle, T Tsujimoto, I D Forsythe, T Takahashi

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed
2.8field-weighted citation impact, top 8% 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

96 citing papers in PubMed, 185 citations in OpenAlex.

  1. Presynaptic CaCell reports · 2026
    Article
  2. Presynaptic CabioRxiv : the preprint server for biology · 2026
    Article
  3. Inactivation of CaV1 and CaV2 channels.The Journal of general physiology · 2025
    Review
  4. Article
  5. A sequential two-step priming scheme reproduces diversity in synaptic strength and short-term plasticity.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. The Role of CaCell reports · 2019
    Article
  12. Review
  13. Diffusion of CaBiophysical journal · 2018
    Article
  14. Control of Excitation/Inhibition Balance in a Hippocampal Circuit by Calcium Sensor Protein Regulation of Presynaptic Calcium Channels.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  15. Synaptotagmin 7 Mediates Both Facilitation and Asynchronous Release at Granule Cell Synapses.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  16. Molecular moieties masking CaThe Journal of general physiology · 2018
    Article
  17. Article
  18. Dynamics of volume-averaged intracellular CaThe Journal of physiology · 2017
    Article
  19. Review
  20. Review

36 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.

M F CuttleIon Channel Group, Department of Cell Physiology and Pharmacology, University of Leicester, PO Box 138, Leicester LE1 9HN, UK.
T Tsujimoto
I D Forsythe
T Takahashi
The University of Tokyo · JPUniversity of Leicester · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

1. The presynaptic calcium current (IpCa) was recorded from the calyx of Held in rat brainstem slices using the whole-cell patch clamp technique. 2. Tetanic activation of IpCa by 1 ms depolarizing voltage steps markedly enhanced the amplitude of IpCa. Using a paired pulse protocol, the second (test) response was facilitated with inter-pulse intervals of less than 100 ms. The facilitation was greater at shorter intervals and was maximal (about 20%) at intervals of 5-10 ms. 3. When the test pulse duration was extended, the facilitation was revealed as an increased rate of IpCa activation. From the current-voltage relationship measured at 1 ms from onset, facilitation could be described by a shift in the half-activation voltage of about -4 mV. 4. IpCa facilitation was not attenuated when guanosine-5'-O-(3-thiotriphosphate) (GTPgammaS) or guanosine-5'-O-(2-thiodiphosphate) (GDPbetaS) was included in the patch pipette, suggesting that G-proteins are not involved in this phenomenon. 5. On reducing [Ca2+]o, the magnitude of facilitation diminished proportionally to the amplitude of IpCa. Replacement of [Ca2+]o by Ba2+ or Na+, or buffering of [Ca2+]i with EGTA or BAPTA attenuated IpCa facilitation. 6. We conclude that repetitive presynaptic activity can facilitate the presynaptic Ca2+ current through a Ca2+-dependent mechanism. This mechanism would be complementary to the action of residual Ca2+ on the exocytotic machinery in producing activity-dependent facilitation of synaptic responses.

Indexed as

AnimalsAuditory PathwaysBrain StemCalcium ChannelsElectric StimulationElectrophysiologyEnzyme InhibitorsGuanosine 5'-O-(3-Thiotriphosphate)Guanosine DiphosphateIn Vitro TechniquesKineticsMembrane PotentialsPatch-Clamp TechniquesPhosphoric Monoester HydrolasesPhosphotransferasesRatsCalcium ChannelsEnzyme Inhibitorsguanosine 5'-O-(2-thiodiphosphate)Guanosine 5'-O-(3-Thiotriphosphate)Guanosine DiphosphatePhosphoric Monoester HydrolasesPhosphotransferasesReceptors, PresynapticThionucleotides

Identifiers

PMID9769416
PMCPMC2231247
OpenAlexW2124595526

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.