Evidence map›Paper›PMID 8120799›Full record

ArticleThe Journal of physiology1993

Calcium channel currents recorded from isolated myocytes of rat basilar artery are stretch sensitive.

P D Langton

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 13% 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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 129 citations in OpenAlex.

  1. Pooled it
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  12. Mechanical control of cation channels in the myogenic response.American journal of physiology. Heart and circulatory physiology · 2011
    Article
  13. Spatial association of the Cav1.2 calcium channel with α5β1-integrin.American journal of physiology. Cell physiology · 2011
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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

1 author at 1 institution in 1 country.

P D LangtonDepartment of Physiology, University of Leicester.
University of Leicester · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. Conventional and perforated patch whole-cell methods were used to measure Ca2+ channel currents from isolated rat basilar arterial myocytes in response to voltage steps. Peak currents measured in response to repeated steps to +2 mV increased over the first 3 min after gaining whole-cell access. The increase followed an exponential time course, was not due to decrease in underlying outward current and was independent of the presence of ATP and GTP in the pipette filling solution. 2. Application of positive and negative pressure to the pipette resulted in significant increase and decrease in peak inward current, respectively. Membrane stretch, associated with changes in cell volume, rather than applied pressure per se appeared to determine changes in peak current. 3. Using amphotericin B perforated patch recording, changes in cell volume on application of 80% hypo- or 120% hyperosmotic superfusing solutions were found to effect similarly peak inward current. Hyposmotically induced cell swelling increased and hyperosmotic cell shrinkage decreased peak inward current at all test potentials studied. 4. The increase in inward current in response to hyposmotic superfusate was reversible and appears to reflect an increase in voltage-dependent Ca2+ channel current since it was not due to a change in non-voltage-sensitive conductance(s) and it was as sensitive as the control current to the dihydropyridine (DHP) antagonist (-)202-791.

Indexed as

AnimalsBariumBasilar ArteryCalcium ChannelsCell SizeElectric ConductivityIn Vitro TechniquesMembrane PotentialsMuscle, Smooth, VascularOsmolar ConcentrationPressureRatsStress, MechanicalVascular ResistanceBariumCalcium Channels

Identifiers

PMID8120799
PMCPMC1143948
OpenAlexW2087289147

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.