Evidence map›Paper›PMID 10420013›Full record

ArticleThe Journal of physiology1999

Voltage-gated K+ currents in freshly isolated myocytes of the pregnant human myometrium.

G A Knock, S V Smirnov, P I Aaronson

Open access · bronzeAbstract 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 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.4field-weighted citation impact, top 43% 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

19 citing papers in PubMed, 49 citations in OpenAlex.

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  10. TREK-1 currents in smooth muscle cells from pregnant human myometrium.American journal of physiology. Cell physiology · 2013
    Article
  11. Article
  12. Mathematical modeling of electrical activity of uterine muscle cells.Medical & biological engineering & computing · 2009
    Article
  13. Article
  14. Article
  15. Article
  16. Potassium channels and uterine function.Seminars in cell & developmental biology · 2007
    Review
  17. Article
  18. Article
  19. 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 at 1 institution in 1 country.

G A KnockLondon Myometrial Group and Division of Pharmacology and Therapeutics, King's College London, St Thomas' Campus, Lambeth Palace Road, London SE1 7EH, UK.
S V Smirnov
P I Aaronson
St Thomas' Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. Voltage-gated K+ currents in human myometrium are not well characterized, and were therefore investigated, using the whole-cell patch clamp technique, in freshly isolated myometrial smooth muscle cells from pregnant women at term. 2. Three types of voltage-gated K+ currents were identified. IK1 was a 4-aminopyridine-insensitive current with a negative half-inactivation (V0.5 = -61 to -67 mV) and negative activation characteristics (threshold between -60 and -40 mV) and slow kinetics. IK2 was a 4-aminopyridine-sensitive current (half-maximal block at approximately 1 mM) with relatively positive half-inactivation (V0.5 = -30 mV) and activation characteristics (threshold between -40 and -30 mV) and faster kinetics. IK,A was a 4-aminopyridine-sensitive current with a negative inactivation and very fast inactivation kinetics. 3. Both IK1 and IK2 were sensitive to high concentrations of tetraethylammonium (half-maximal block at approximately 3 mM) and low concentrations of clofilium (half-maximal block by 3-10 microM). 4. IK1 and IK2 were unevenly distributed between myometrial cells, most cells possessing either IK1 (30 cells) or IK2 (24 cells) as the predominant current. 5. The characteristics of these currents suggest a possible function in the control of membrane potentials and smooth muscle quiescence in the pregnant human myometrium.

Indexed as

Potassium Channels, Voltage-Gated4-AminopyridineAdultAnti-Arrhythmia AgentsElectric StimulationElectrophysiologyFemaleHumansIn Vitro TechniquesIon Channel GatingKCNQ1 Potassium ChannelKCNQ Potassium ChannelsMembrane PotentialsMyometriumPatch-Clamp TechniquesPotassium Channel Blockers4-AminopyridineAnti-Arrhythmia AgentsclofiliumKCNQ1 Potassium ChannelKCNQ1 protein, humanKCNQ Potassium ChannelsPotassium Channel BlockersPotassium ChannelsPotassium Channels, Voltage-GatedQuaternary Ammonium CompoundsTetraethylammonium

Identifiers

PMID10420013
PMCPMC2269461
OpenAlexW2061593585

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.