Evidence map›Paper›PMID 10517808›Full record

ArticleThe Journal of physiology1999

The role of the sarcoplasmic reticulum as a Ca2+ sink in rat uterine smooth muscle cells.

A V Shmigol, D A Eisner, S Wray

Open access · greenAbstract 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 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

21 citing papers in PubMed, 68 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. A close look at the contraction and relaxation of the myometrium; the role of calcium.Journal of the Turkish German Gynecological Association · 2013
    Review
  8. What do we know about what happens to myometrial function as women age?Journal of muscle research and cell motility · 2012
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Maturation of intracellular calcium homeostasis in sheep pulmonary arterial smooth muscle cells.American journal of physiology. Lung cellular and molecular physiology · 2008
    Article
  15. Article
  16. Article
  17. Review
  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

3 authors at 1 institution in 1 country.

A V ShmigolDepartments of Physiology and Veterinary Preclinical Sciences, University of Liverpool, Liverpool L69 3BX, UK.
D A Eisner
S Wray
University of Liverpool · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

1. The mechanisms responsible for removing calcium ions from the cytoplasm were investigated in single rat uterine myocytes using indo-1. 2. Trains of depolarizing voltage-clamp pulses increased [Ca2+]i. The rate of decay of [Ca2+]i was slowed by inhibition of the sarcoplasmic reticulum (SR) Ca2+-ATPase with cyclopiazonic acid (CPA). However, if the sarcolemmal Na+-Ca2+ exchanger and Ca2+-ATPase were inhibited then recovery of [Ca2+]i was abolished showing that the SR Ca2+-ATPase alone cannot produce decay of [Ca2+]i. 3. In another series of experiments, Ca2+ release from the SR was induced with carbachol in a Ca2+-free solution. Under these conditions responses to repeated applications of carbachol could be obtained. In the presence of CPA, however, only the first application was effective. This suggests that the SR Ca2+-ATPase sequesters a significant amount of Ca2+ into the SR. 4. CPA slowed the rate of decay of [Ca2+]i following carbachol addition by > 50 %. Again, however, after a brief transient fall, decay was abolished when the Na+-Ca2+ exchanger and sarcolemmal Ca2+-ATPase were inhibited. 5. These data show that, although the SR Ca2+-ATPase contributes to the decay of [Ca2+]i, it cannot function effectively in the absence of Ca2+ removal from the cell. These data are discussed in the context of the superficial buffer barrier model in which Ca2+ is taken up into the SR and then released very close to sarcolemmal Ca2+ extrusion sites, i.e. the SR acting in series with the surface membrane extrusion mechanisms. We also suggest that the amount of filling of the SR influences the rate of Ca2+ removal.

Indexed as

AnimalsCalciumCalcium SignalingCalcium-Transporting ATPasesCarbacholCarbonyl Cyanide m-Chlorophenyl HydrazoneFemaleIn Vitro TechniquesKineticsMitochondria, MuscleMuscle, SmoothParasympathomimeticsRatsSarcoplasmic ReticulumSodiumUncoupling AgentsCalciumCalcium-Transporting ATPasesCarbacholCarbonyl Cyanide m-Chlorophenyl HydrazoneParasympathomimeticsSodiumUncoupling Agents

Identifiers

PMID10517808
PMCPMC2269575
OpenAlexW2046390598

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.