Evidence map›Paper›PMID 10747196›Full record

ArticleThe Journal of physiology2000

Role of calcium stores and membrane voltage in the generation of slow wave action potentials in guinea-pig gastric pylorus.

D F van Helden, M S Imtiaz, K Nurgaliyeva, P von der Weid, P J Dosen

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

79 citing papers in PubMed, 139 citations in OpenAlex.

  1. Pacemaking in the lymphatic system.The Journal of physiology · 2026
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  7. CaCell calcium · 2021
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  11. NaFrontiers in physiology · 2020
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  12. CaThe Journal of physiology · 2019
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  18. Review
  19. Article
  20. The significance of interstitial cells in neurogastroenterology.Journal of neurogastroenterology and motility · 2014
    Article

19 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

5 authors at 1 institution in 1 country.

D F van HeldenNeuroscience Group, Discipline of Human Physiology, Faculty of Medicine and Health Sciences, University of Newcastle, NSW 2308, Australia. hpdvh@mail.newcastle.edu.au
M S Imtiaz
K Nurgaliyeva
P von der Weid
P J Dosen
University of Newcastle Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. Intracellular recordings made in single bundle strips of a visceral smooth muscle revealed rhythmic spontaneous membrane depolarizations termed slow waves (SWs). These exhibited 'pacemaker' and 'regenerative' components composed of summations of more elementary events termed spontaneous transient depolarizations (STDs). 2. STDs and SWs persisted in the presence of tetrodotoxin, nifedipine and ryanodine, and upon brief exposure to Ca2+-free Cd2+-containing solutions; they were enhanced by ACh and blocked by BAPTA AM, cyclopiazonic acid and caffeine. 3. SWs were also inhibited in heparin-loaded strips. SWs were observed over a wide range of membrane potentials (e.g. -80 to -45 mV) with increased frequencies at more depolarized potentials. 4. Regular spontaneous SW activity in this preparation began after 1-3 h superfusion of the tissue with physiological saline following the dissection procedure. Membrane depolarization applied before the onset of this activity induced bursts of STD-like events (termed the 'initial' response) which, when larger than threshold levels initiated regenerative responses. The combined initial-regenerative waveform was termed the SW-like action potential. 5. Voltage-induced responses exhibited large variable latencies (typical range 0.3-4 s), refractory periods of approximately 11 s and a pharmacology that was indistinguishable from those of STDs and spontaneous SWs. 6. The data indicate that SWs arise through more elementary inositol 1,4,5-trisphosphate (IP3) receptor-induced Ca2+ release events which rhythmically synchronize to trigger regenerative Ca2+ release and induce inward current across the plasmalemma. The finding that action potentials, which were indistinguishable from SWs, could be evoked by depolarization suggests that membrane potential modulates IP3 production. Voltage feedback on intracellular IP3-sensitive Ca2+ release is likely to have a major influence on the generation and propagation of SWs.

Indexed as

Action PotentialsAnimalsCadmiumCaffeineCalciumCalcium Channel BlockersCell MembraneChelating AgentsEgtazic AcidGuinea PigsHeparinIndolesIn Vitro TechniquesMembrane PotentialsMuscle, SmoothNifedipine1,2-bis(2-aminophenoxy)ethane N,N,N',N'-tetraacetic acid acetoxymethyl esterCadmiumCaffeineCalciumCalcium Channel BlockersChelating Agentscyclopiazonic acidEgtazic AcidHeparinIndolesNifedipineRyanodineTetrodotoxin

Identifiers

PMID10747196
PMCPMC2269852
OpenAlexW2164636708

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.