Evidence map›Paper›PMID 20172862›Full record

ArticleCardiovascular research2010

Cholesterol depletion alters amplitude and pharmacology of vascular calcium-activated chloride channels.

William R Sones, Alison J Davis, Normand Leblanc, Iain A Greenwood

Open access · bronzeAbstract read
In one paragraph

Article in Cardiovascular research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

38 citing papers in PubMed, 62 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Cholesterol and PIPAdvances in experimental medicine and biology · 2023
    Article
  6. Review
  7. Article
  8. Polymodal Control of TMEM16x Channels and Scramblases.International journal of molecular sciences · 2022
    Review
  9. Review
  10. Article
  11. CaJournal of advanced research · 2021
    Article
  12. Article
  13. Flotillin-1 Interacts With and Sustains the Surface Levels of TRPV2 Channel.Frontiers in cell and developmental biology · 2021
    Article
  14. Review
  15. Allosteric modulation of alternatively spliced CaProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

4 authors at 2 institutions in 2 countries.

William R SonesDivision of Basic Medical Sciences, St George's, University of London, London SW17 0RE, UK.
Alison J Davis
Normand Leblanc
Iain A Greenwood
St George's, University of London · GBUniversity of Nevada, Reno · US

Funding

Signal transduction pathways regulated by cell volumeP20RR015581 · NCRR · UNIVERSITY OF NEVADA RENO · PI VALENCIK, MARIA LYNN · 2000 to 2009
$19.5M
Properties of Clca Channels in Vascular MyocytesR01HL075477 · NHLBI · UNIVERSITY OF NEVADA RENO · PI LEBLANC, NORMAND · 2005 to 2009
$1.7M
British Heart Foundation PG/05/038British Heart Foundation PG/07/127/24235NCRR NIH HHS 5 P 20RR15581NCRR NIH HHS P20 RR015581NHLBI NIH HHS 5 RO1 HL 075477NHLBI NIH HHS R01 HL075477
6 · The paper itself

Abstract

aimsCalcium-activated chloride channels (CACCs) share common pharmacological properties with Kcnma1-encoded large conductance K(+) channels (BK(Ca) or K(Ca)1.1) and it has been suggested that they may co-exist in a macromolecular complex. As K(Ca)1.1 channels are known to localize to cholesterol and caveolin-rich lipid rafts (caveolae), the present study investigated whether Ca(2+)-sensitive Cl(-) currents in vascular myocytes were affected by the cholesterol depleting agent methyl-beta-cyclodextrin (M-betaCD). METHODS AND

resultsCalcium-activated chloride and potassium currents were recorded from single murine portal vein myocytes in whole cell voltage clamp. Western blot was undertaken following sucrose gradient ultracentrifugation using protein lysates from whole portal veins. Ca(2+)-activated Cl(-) currents were augmented by 3 mg mL(-1) M-betaCD with a rapid time course (t(0.5) = 1.8 min). M-betaCD had no effect on the bi-modal response to niflumic acid or anthracene-9-carboxylate but completely removed the inhibitory effects of the K(Ca)1.1 blockers, paxilline and tamoxifen, as well as the stimulatory effect of the K(Ca)1.1 activator NS1619. Discontinuous sucrose density gradients followed by western blot analysis revealed that the position of lipid raft markers caveolin and flotillin-2 was altered by 15 min application of 3 mg mL(-1) M-betaCD. The position of K(Ca)1.1 and the newly identified candidate for CACCs, TMEM16A, was also affected by M-betaCD.

conclusionThese data reveal that CACC properties are influenced by lipid raft integrity.

Indexed as

AnimalsAnoctamin-1beta-CyclodextrinsBlotting, WesternCaveolinsCentrifugation, Density GradientChloride ChannelsCholesterolLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsMembrane MicrodomainsMembrane PotentialsMembrane ProteinsMembrane Transport ModulatorsMiceMice, Inbred BALB CMuscle, Smooth, VascularANO1 protein, humanAnoctamin-1beta-CyclodextrinsCaveolinsChloride ChannelsCholesterolflotillinsKcnma1 protein, mouseLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsMembrane ProteinsMembrane Transport Modulatorsmethyl-beta-cyclodextrinNeoplasm Proteins

Identifiers

PMID20172862
PMCPMC2904657
OpenAlexW2135923426

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.