Evidence map›Paper›PMID 12122151›Full record

ArticleThe Journal of physiology2002

Modulation of volume-sensitive chloride current by noradrenaline in rabbit portal vein myocytes.

D C Ellershaw, I A Greenwood, W A Large

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Article in The Journal of physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

12 citing papers in PubMed, 35 citations in OpenAlex.

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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

3 authors at 2 institutions in 1 country.

D C EllershawDepartment of Pharmacology and Clinical Pharmacology, St George's Hospital Medical School, Cranmer Terrace, London SW17 0RE, UK. dellersh@sghms.ac.uk
I A Greenwood
W A Large
St George's Hospital · GBSt George's, University of London · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

The effect of noradrenaline on the volume-sensitive chloride current (I(Cl(swell))) was studied with conventional whole-cell recording techniques in freshly dispersed isolated smooth muscle cells of the rabbit portal vein. In the absence of receptor antagonists, noradrenaline produced an increase in the amplitude of I(Cl(swell)) in some cells and a decrease in others. In the presence of the beta-adrenoceptor antagonist propranolol, noradrenaline increased I(Cl(swell)) and in the presence of the alpha(1)-adrenoceptor antagonist prazosin, noradrenaline reduced I(Cl(swell).) The phospholipase C (PLC) inhibitor U73122 reduced the amplitude of I(Cl(swell)) whereas the inactive analogue U73343 had no effect. The phorbol esters phorbol-12-myristate-13-acetate (PMA) and phorbol-12,13-dibutyrate (PDBu) increased the amplitude of I(Cl(swell)) by approximately 60 and 100 %, respectively, in a voltage-independent fashion. Inhibitors of protein kinase C (PKC) chelerythrine and calphostin-C decreased the amplitude of I(Cl(swell)) in a concentration-dependent but voltage-independent manner. Bath application of 8-Br-cAMP decreased I(Cl(swell)) by about 60 % whereas the inhibitor of protein kinase A (PKA) KT5720 increased the amplitude of I(Cl(swell)) by approximately 80-90 %. In the presence of propranolol, chelerythrine prevented the increase of I(Cl(swell)) by noradrenaline; in the presence of prazosin, KT5720 blocked the inhibitory action of noradrenaline. The results show that in rabbit portal vein myocytes noradrenaline enhances I(Cl(swell)) by acting on alpha(1)-adrenoceptors and reduces I(Cl(swell)) by stimulating beta-adrenoceptors. The data suggest that the potentiating and inhibitory effects of noradrenaline are mediated, respectively, by PKC and PKA.

Indexed as

Carbazoles8-Bromo Cyclic Adenosine MonophosphateAdrenergic alpha-AntagonistsAdrenergic beta-AntagonistsAlkaloidsAnimalsBenzophenanthridinesChloride ChannelsCyclic AMP-Dependent Protein KinasesEnzyme InhibitorsEstrenesIndolesIn Vitro TechniquesMembrane PotentialsMuscle, Smooth, VascularNaphthalenes1-(6-((3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl)-1H-pyrrole-2,5-dione8-Bromo Cyclic Adenosine MonophosphateAdrenergic alpha-AntagonistsAdrenergic beta-AntagonistsAlkaloidsBenzophenanthridinescalphostin CCarbazoleschelerythrineChloride ChannelsCyclic AMP-Dependent Protein KinasesEnzyme InhibitorsEstrenesIndolesKT 5720NaphthalenesNorepinephrinePhenanthridinesPrazosinPropranololPyrrolesPyrrolidinonesTetradecanoylphorbol Acetate

Identifiers

PMID12122151
PMCPMC2290416
OpenAlexW2114663015

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.