Evidence map›Paper›PMID 9746517›Full record

ArticleBiophysical journal1998

Chloride channel blockers inhibit Ca2+ uptake by the smooth muscle sarcoplasmic reticulum.

N S Pollock, M E Kargacin, G J Kargacin

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

24 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Chloride ions in health and disease.Bioscience reports · 2024
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Chloride channel blockade relaxes airway smooth muscle and potentiates relaxation by β-agonists.American journal of physiology. Lung cellular and molecular physiology · 2014
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Inhibition of SERCA2 Ca(2+)-ATPases by Cs(+).Pflugers Archiv : European journal of physiology · 2005
    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

3 authors at 1 institution in 1 country.

N S PollockDepartment of Physiology and Biophysics, University of Calgary, Calgary, Alberta T2N 4N1, Canada.
M E Kargacin
G J Kargacin
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite the fact that Ca2+ transport into the sarcoplasmic reticulum (SR) of muscle cells is electrogenic, a potential difference is not maintained across the SR membrane. To achieve electroneutrality, compensatory charge movement must occur during Ca2+ uptake. To examine the role of Cl- in this charge movement in smooth muscle cells, Ca2+ transport into the SR of saponin-permeabilized smooth muscle cells was measured in the presence of various Cl- channel blockers or when I-, Br-, or SO42- was substituted for Cl-. Calcium uptake was inhibited in a dose-dependent manner by 5-nitro-2-(3-phenylpropylamino) benzoic acid (NPPB) and by indanyloxyacetic acid 94 (R(+)-IAA-94), but not by niflumic acid or 4,4'-dinitrostilbene-2,2'-disulfonic acid (DNDS). Smooth muscle SR Ca2+ uptake was also partially inhibited by the substitution of SO42- for Cl-, but not when Cl- was replaced by I- or Br-. Neither NPPB nor R(+)-IAA-94 inhibited Ca2+ uptake into cardiac muscle SR vesicles at concentrations that maximally inhibited uptake in smooth muscle cells. These results indicate that Cl- movement is important for charge compensation in smooth muscle cells and that the Cl- channel or channels involved are different in smooth and cardiac muscle cells.

Indexed as

AnimalsCalciumChloride ChannelsGlycolatesIn Vitro TechniquesKineticsMuscle, SmoothNitrobenzoatesRabbitsSarcoplasmic ReticulumStilbenesStomach4,4'-dinitro-2,2'-stilbenedisulfonic acid5-nitro-2-(3-phenylpropylamino)benzoic acidCalciumChloride ChannelsGlycolatesMK 473NitrobenzoatesStilbenes

Identifiers

PMID9746517
PMCPMC1299847
OpenAlexW2028868190

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.