Evidence map›Paper›PMID 34623183›Full record

ReviewAmerican journal of physiology. Heart and circulatory physiology2021

Stop the beat to see the rhythm: excitation-contraction uncoupling in cardiac research.

Luther M Swift, Matthew W Kay, Crystal M Ripplinger, Nikki Gillum Posnack

Open access · greenAbstract readReview
In one paragraph

Review in American journal of physiology. Heart and circulatory physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

27 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Fluorescence-lifetime optical electrophysiology in contracting cardiomyocytes.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
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  12. Evidence for the cardiodepressive effects of the plasticizer di-2-ethylhexyl phthalate.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Article
  13. Complex repolarization dynamics in ex vivo human ventricles are independent of the restitution properties.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2023
    Article
  14. Article
  15. Paralysis by analysis: Overcoming cardiac contraction with computer vision.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  16. Virtual blebbistatin: A robust and rapid software approach to motion artifact removal in optical mapping of cardiomyocytes.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  17. Article
  18. Review
  19. Article
  20. Optical mapping of contracting hearts.The Journal of physiology · 2023
    Review
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 3 institutions in 1 country.

Luther M SwiftChildren's National Heart Institute, Children's National Hospital, Washington, District of Columbia.
Matthew W KayDepartment of Biomedical Engineering, George Washington University, Washington, District of Columbia.ORCID 0000-0003-2756-5055
Crystal M RipplingerDepartment of Pharmacology, University of California, Davis, California.ORCID 0000-0002-9908-4106
Nikki Gillum PosnackChildren's National Heart Institute, Children's National Hospital, Washington, District of Columbia.ORCID 0000-0002-3880-7200
Children's National · USGeorge Washington University · USUniversity of California, Davis · US

Funding

The Role of Adrenergic Stimulation in ArrhythmogenesisR01HL111600 · NHLBI · UNIVERSITY OF CALIFORNIA-IRVINE · PI Crystal May Ripplinger · 2012 to 2026
$7.1M
Does Biocompatibility Contribute to Transfusion-Related Adverse Effects?R01HL139472 · NHLBI · CHILDREN'S RESEARCH INSTITUTE · PI Nikki Gillum Posnack · 2018 to 2026
$5.2M
Scalable platform for optimizing human cardiac tissue engineering via optical pacing and on-demand oxygenationR01HL144157 · NHLBI · GEORGE WASHINGTON UNIVERSITY · PI ENTCHEVA, EMILIA, KAY, MATTHEW W. · 2019 to 2022
$2.8M
Hypothalamic neuron activation to blunt myocardial remodeling during chronic sleep apneaR01HL146169 · NHLBI · GEORGE WASHINGTON UNIVERSITY · PI KAY, MATTHEW W. · 2019 to 2022
$2.6M
Novel Mechanisms that Restore Cardiac Parasympathetic Activity Limits Arrhythmias and Cardiac Dysfunction After Myocardial InfarctionR01HL147279 · NHLBI · GEORGE WASHINGTON UNIVERSITY · PI KAY, MATTHEW W., MENDELOWITZ, DAVID · 2020 to 2023
$2.3M
HHS | National Institutes of Health (NIH) HL111600NHLBI NIH HHS R01 HL111600NHLBI NIH HHS R01 HL139472NHLBI NIH HHS R01 HL144157NHLBI NIH HHS R01 HL146169NHLBI NIH HHS R01 HL147279
6 · The paper itself

Abstract

Optical mapping is an imaging technique that is extensively used in cardiovascular research, wherein parameter-sensitive fluorescent indicators are used to study the electrophysiology and excitation-contraction coupling of cardiac tissues. Despite many benefits of optical mapping, eliminating motion artifacts within the optical signals is a major challenge, as myocardial contraction interferes with the faithful acquisition of action potentials and intracellular calcium transients. As such, excitation-contraction uncoupling agents are frequently used to reduce signal distortion by suppressing contraction. When compared with other uncoupling agents, blebbistatin is the most frequently used, as it offers increased potency with minimal direct effects on cardiac electrophysiology. Nevertheless, blebbistatin may exert secondary effects on electrical activity, metabolism, and coronary flow, and the incorrect administration of blebbistatin to cardiac tissue can prove detrimental, resulting in erroneous interpretation of optical mapping results. In this "Getting It Right" perspective, we briefly review the literature regarding the use of blebbistatin in cardiac optical mapping experiments, highlight potential secondary effects of blebbistatin on cardiac electrical activity and metabolic demand, and conclude with the consensus of the authors on best practices for effectively using blebbistatin in optical mapping studies of cardiac tissue.

Indexed as

Biomedical ResearchVoltage-Sensitive Dye ImagingAction PotentialsAnimalsArtifactsCells, CulturedExcitation Contraction CouplingHeart RateHeterocyclic Compounds, 4 or More RingsHumansMyocardial ContractionMyocytes, CardiacTime FactorsblebbistatinHeterocyclic Compounds, 4 or More Ringsblebbistatincardiac physiologyexcitation-contraction uncoupleroptical mapping

Identifiers

PMID34623183
PMCPMC8782655
OpenAlexW3203549897

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.