Evidence map›Paper›PMID 9824714›Full record

ArticleThe Journal of physiology1998

Mode switching characterizes the activity of large conductance potassium channels recorded from rat cortical fused nerve terminals.

M A Smith, M L Ashford

Open access · bronzeAbstract 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 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

11 citing papers in PubMed, 16 citations in OpenAlex.

  1. BK Channels Mediate Synaptic Plasticity Underlying Habituation in Rats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
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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

2 authors at 1 institution in 1 country.

M A SmithDepartment of Biomedical Sciences, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen AB25 2ZD,, UK.
M L Ashford
University of Aberdeen · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

1. Inside-out recordings from rat cortical fused nerve terminals indicate that the most common channel observed was a large conductance K+ (BK) channel with characteristics dissimilar to conventional cell body calcium-activated BK (BKCa) channels. 2. BK channels exhibit mode switching between low (mode 1) and high (mode 2) activity, an effect not influenced by membrane voltage. Increasing internal Ca2+ concentration increased time spent in mode 2 as did application of protein kinase A, an effect not mimicked by protein kinase C or protein kinase G. 3. Mode 1 activity was voltage independent although depolarization increased mode 2 channel activity. Global average channel activity was voltage and Ca2+ dependent. 4. Alkaline phosphatase treatment induced channel activity to reside permanently in mode 2, where activity was voltage and Ca2+ dependent but unaffected by protein kinases A, G or C. 5. Internal application of tetraethylammonium blocked BK channel activity in a manner identical to that reported for BKCa channels. 6. These results indicate that nerve terminal membranes have large conductance K+ channels with significant differences in gating kinetics and regulation of activity compared with BKCa channels of other neuronal preparations. The BK channel subtype may play a unique physiological role specific to the nerve terminal.

Indexed as

Alkaline PhosphataseAnimalsCalciumCerebral CortexCyclic AMP-Dependent Protein KinasesElectric StimulationElectrophysiologyIon Channel GatingMaleMembrane PotentialsNeuronsPatch-Clamp TechniquesPotassium ChannelsPresynaptic TerminalsProtein Kinase CRatsAlkaline PhosphataseCalciumCyclic AMP-Dependent Protein KinasesPotassium ChannelsProtein Kinase CTetraethylammonium Compounds

Identifiers

PMID9824714
PMCPMC2231315
OpenAlexW2023894474

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.