Evidence map›Paper›PMID 10779321›Full record

ArticleThe Journal of general physiology2000

Calcium-induced calcium release in smooth muscle: loose coupling between the action potential and calcium release.

M L Collier, G Ji, Y Wang, M I Kotlikoff

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of general physiology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

66 citing papers in PubMed, 156 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. The machinery of healthy vasoconstriction: an overview.Pflugers Archiv : European journal of physiology · 2025
    Review
  7. Review
  8. Article
  9. Biophysical Mechanisms of Vaginal Smooth Muscle Contraction: The Role of the Membrane Potential and Ion Channels.Pathophysiology : the official journal of the International Society for Pathophysiology · 2024
    Review
  10. Article
  11. Orai, RyR, and IPCommunications biology · 2023
    Article
  12. Review
  13. Improper Remodeling of Organelles Deputed to CaInternational journal of molecular sciences · 2021
    Review
  14. Functional Microstructure of CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  15. Cellular and Molecular Processes in Pulmonary Hypertension.Advances in experimental medicine and biology · 2021
    Article
  16. Junctophilins: Key Membrane Tethers in Muscles and Neurons.Frontiers in molecular neuroscience · 2021
    Review
  17. Igniting CaProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  18. Multiscale imaging of basal cell dynamics in the functionally mature mammary gland.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  19. Review
  20. Calcium signals that determine vascular resistance.Wiley interdisciplinary reviews. Systems biology and medicine · 2019
    Review

6 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

M L CollierDepartment of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6046, USA.
G Ji
Y Wang
M I Kotlikoff
University of Pennsylvania · US

Funding

Remodeling of Smooth Muscle in Bladder Outlet ObstructionP50DK052620 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI CHACKO, SAMUEL K. · 1998 to 2012
$12.9M
Smooth Muscle Ca Release in RYR and FKBP transgenic miceR01HL045239 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI KOTLIKOFF, MICHAEL I. · 1990 to 2006
$2.2M
PHYSICIAN AND SCIENTIST TRAINING IN UROLOGICAL RESEARCHT32DK007708 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI WEIN, ALAN J · 1993 to 2007
$1.0M
NHLBI NIH HHS HL45239NHLBI NIH HHS R01 HL045239NIDDK NIH HHS DK52620NIDDK NIH HHS P50 DK052620NIDDK NIH HHS T32 DK007708NIDDK NIH HHS T32DK07708-06
6 · The paper itself

Abstract

Calcium-induced calcium release (CICR) has been observed in cardiac myocytes as elementary calcium release events (calcium sparks) associated with the opening of L-type Ca(2+) channels. In heart cells, a tight coupling between the gating of single L-type Ca(2+) channels and ryanodine receptors (RYRs) underlies calcium release. Here we demonstrate that L-type Ca(2+) channels activate RYRs to produce CICR in smooth muscle cells in the form of Ca(2+) sparks and propagated Ca(2+) waves. However, unlike CICR in cardiac muscle, RYR channel opening is not tightly linked to the gating of L-type Ca(2+) channels. L-type Ca(2+) channels can open without triggering Ca(2+) sparks and triggered Ca(2+) sparks are often observed after channel closure. CICR is a function of the net flux of Ca(2+) ions into the cytosol, rather than the single channel amplitude of L-type Ca(2+) channels. Moreover, unlike CICR in striated muscle, calcium release is completely eliminated by cytosolic calcium buffering. Thus, L-type Ca(2+) channels are loosely coupled to RYR through an increase in global [Ca(2+)] due to an increase in the effective distance between L-type Ca(2+) channels and RYR, resulting in an uncoupling of the obligate relationship that exists in striated muscle between the action potential and calcium release.

Indexed as

Action PotentialsAnimalsCalciumCalcium Channels, L-TypeCalcium SignalingChelating AgentsIon Channel GatingMaleMuscle ContractionMuscle, SmoothPatch-Clamp TechniquesRabbitsRyanodine Receptor Calcium Release ChannelSarcomeresUrinary BladderCalciumCalcium Channels, L-TypeChelating AgentsRyanodine Receptor Calcium Release Channel

Identifiers

PMID10779321
PMCPMC2217224
OpenAlexW2144399280

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.