Evidence map›Paper›PMID 21946907›Full record

ArticleJournal of visualized experiments : JoVE2011

Optical mapping of action potentials and calcium transients in the mouse heart.

Di Lang, Matthew Sulkin, Qing Lou, Igor R Efimov

Open access · bronzeAbstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
3.3field-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

47 citing papers in PubMed, 69 citations in OpenAlex.

  1. Chromatin topology control by a muscle-specific ribosomal protein.bioRxiv : the preprint server for biology · 2026
    Article
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  5. Review
  6. Optical mapping of contracting hearts.The Journal of physiology · 2023
    Review
  7. Article
  8. Article
  9. Guidelines for assessment of cardiac electrophysiology and arrhythmias in small animals.American journal of physiology. Heart and circulatory physiology · 2022
    Review
  10. Article
  11. Article
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  13. Article
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  17. Ultrafast four-dimensional imaging of cardiac mechanical wave propagation with sparse optoacoustic sensing.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  18. Review
  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 1 institution in 1 country.

Di LangDepartment of Biomedical Engineering, Washington University in St. Louis, USA.
Matthew Sulkin
Qing Lou
Igor R Efimov
Washington University in St. Louis · US

Funding

STRUCTURE/FUNCTION OF THE PACEMAKING AND CONDUCTION SYSTEM OF THE HEARTR01HL085369 · NHLBI · WASHINGTON UNIVERSITY · PI EFIMOV, IGOR R · 2008 to 2011
$1.5M
NHLBI NIH HHS R01 HL085369
6 · The paper itself

Abstract

The mouse heart is a popular model for cardiovascular studies due to the existence of low cost technology for genetic engineering in this species. Cardiovascular physiological phenotyping of the mouse heart can be easily done using fluorescence imaging employing various probes for transmembrane potential (V(m;)), calcium transients (CaT), and other parameters. Excitation-contraction coupling is characterized by action potential and intracellular calcium dynamics; therefore, it is critically important to map both V(m;) and CaT simultaneously from the same location on the heart(1-4). Simultaneous optical mapping from Langendorff perfused mouse hearts has the potential to elucidate mechanisms underlying heart failure, arrhythmias, metabolic disease, and other heart diseases. Visualization of activation, conduction velocity, action potential duration, and other parameters at a myriad of sites cannot be achieved from cellular level investigation but is well solved by optical mapping(1,5,6). In this paper we present the instrumentation setup and experimental conditions for simultaneous optical mapping of V(m;) and CaT in mouse hearts with high spatio-temporal resolution using state-of-the-art CMOS imaging technology. Consistent optical recordings obtained with this method illustrate that simultaneous optical mapping of Langendorff perfused mouse hearts is both feasible and reliable.

Indexed as

AnimalsCalciumHeartMiceModels, AnimalMyocardiumPerfusionVoltage-Sensitive Dye ImagingCalcium

Identifiers

PMID21946907
PMCPMC3230201
OpenAlexW2043612224

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.