Evidence map›Paper›PMID 10432354›Full record

ArticleThe Journal of physiology1999

Unitary nature of regenerative potentials recorded from circular smooth muscle of guinea-pig antrum.

F R Edwards, G D Hirst, H Suzuki

Abstract read
In one paragraph

Article in The Journal of physiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing 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

68 citing papers in PubMed.

  1. Pacemaking in the lymphatic system.The Journal of physiology · 2026
    Review
  2. Functional roles of interstitial cells of Cajal in the GI tract of rats.American journal of physiology. Gastrointestinal and liver physiology · 2025
    Article
  3. Article
  4. Review
  5. CaThe Journal of physiology · 2022
    Article
  6. NaFrontiers in physiology · 2020
    Article
  7. CaThe Journal of physiology · 2019
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. The significance of interstitial cells in neurogastroenterology.Journal of neurogastroenterology and motility · 2014
    Article
  15. Mitochondrial calcium handling within the interstitial cells of Cajal.American journal of physiology. Gastrointestinal and liver physiology · 2014
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

8 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

3 authors.

F R EdwardsDepartment of Zoology, University of Melbourne, Parkville, Victoria 3052, Australia.
G D Hirst
H Suzuki

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. When short segments of single bundles of circular muscle of guinea-pig antrum were isolated and impaled with two microelectrodes, the membrane potential recordings displayed an ongoing discharge of noise. 2. Treating the preparations with acetoxymethyl ester form of BAPTA (BAPTA AM) reduced the membrane noise and revealed discrete depolarizing unitary potentials. The spectral densities determined from control preparations and ones loaded with BAPTA had similar shapes but those from control preparations had higher amplitudes, suggesting that membrane noise results from a high frequency discharge of unitary potentials. 3. Depolarization of isolated segments of antrum initiated regenerative responses. These responses, along with membrane noise and unitary potentials, were inhibited by a low concentration of caffeine (1 mM). 4. Loading the preparations with BAPTA decreased the amplitudes of regenerative responses. Depolarization was now seen to increase the frequency and mean amplitude of unitary potentials over a time course similar to that of a regenerative potential. 5. Noise spectra determined during periods of rest, during regenerative potentials triggered by direct depolarization and during slow waves, recorded from preparations containing interstitial cells of Cajal (ICC), had very similar shapes but different amplitudes. 6. The observations suggest that a regenerative potential, the secondary component of a slow wave, is made up of a cluster of several discrete unitary potentials rather than from the activation of voltage-dependent ion channels.

Indexed as

AnimalsCaffeineChelating AgentsEgtazic AcidElectrophysiologyGuinea PigsIn Vitro TechniquesMembrane PotentialsModels, BiologicalMuscle, SmoothPyloric AntrumStomach1,2-bis(2-aminophenoxy)ethane N,N,N',N'-tetraacetic acid acetoxymethyl esterCaffeineChelating AgentsEgtazic Acid

Identifiers

PMID10432354
PMCPMC2269484

What OpenQuestion holds

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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.