Evidence map›Paper›PMID 23619423›Full record

ReviewCardiovascular research2013

Early afterdepolarizations in cardiac myocytes: beyond reduced repolarization reserve.

Zhilin Qu, Lai-Hua Xie, Riccardo Olcese, Hrayr S Karagueuzian, Peng-Sheng Chen, Alan Garfinkel, James N Weiss

Abstract readReview
In one paragraph

Review in Cardiovascular research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers.

0numbers the graph read from it
0cells of the map it votes in
95citing papers in PubMed
–field-weighted citation impact
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

95 citing papers in PubMed.

  1. Phase 2 Re-Entry Without IJACC. Clinical electrophysiology · 2023
    Trial
  2. Review
  3. Review
  4. Article
  5. Role of ryanodine receptor cooperativity in CaThe Journal of physiology · 2024
    Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Loss of Cardiac Splicing RegulatorJACC. Basic to translational science · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Unexpected impairment ofNature cardiovascular research · 2023
    Article
  20. Review

35 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

7 authors.

Zhilin QuDepartment of Medicine , David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA. zqu@mednet.ucla.edu
Lai-Hua Xie
Riccardo Olcese
Hrayr S Karagueuzian
Peng-Sheng Chen
Alan Garfinkel
James N Weiss

Funding

WAVE DYNAMICS IN NORMAL AND DISEASED RABBIT HEARTSP01HL078931 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI WEISS, JAMES · 2005 to 2015
$20.7M
TARGETING OBESITY AND BLOOD PRESSURE IN URBAN YOUTHU01HL103622 · NHLBI · CASE WESTERN RESERVE UNIVERSITY · PI BORAWSKI, ELAINE A., MOORE, SHIRLEY M · 2010 to 2016
$12.2M
Sex Hormones and Cardiac Arrhythmia in Transgenic LQT2 RabbitsR01HL093205 · NHLBI · RHODE ISLAND HOSPITAL · PI KOREN, GIDEON · 2009 to 2012
$2.3M
Antiarrhythmic Mechanisms in the Hearts of Hibernating MammalsR01HL097979 · NHLBI · UNIV OF MED/DENT OF NJ-NJ MEDICAL SCHOOL · PI XIE, LAI-HUA · 2010 to 2015
$1.9M
NHLBI NIH HHS P01 HL078931NHLBI NIH HHS R01 HL093205NHLBI NIH HHS R01 HL097979NHLBI NIH HHS R01 HL103622NHLBI NIH HHS R01 HL97979
6 · The paper itself

Abstract

Early afterdepolarizations (EADs) are secondary voltage depolarizations during the repolarizing phase of the action potential, which can cause lethal cardiac arrhythmias. The occurrence of EADs requires a reduction in outward current and/or an increase in inward current, a condition called reduced repolarization reserve. However, this generalized condition is not sufficient for EAD genesis and does not explain the voltage oscillations manifesting as EADs. Here, we summarize recent progress that uses dynamical theory to build on and advance our understanding of EADs beyond the concept of repolarization reserve, towards the goal of developing a holistic and integrative view of EADs and their role in arrhythmogenesis. We first introduce concepts from nonlinear dynamics that are relevant to EADs, namely, Hopf bifurcation leading to oscillations and basin of attraction of an equilibrium or oscillatory state. We then present a theory of phase-2 EADs in nonlinear dynamics, which includes the formation of quasi-equilibrium states at the plateau voltage, their stabilities, and the bifurcations leading to and terminating the oscillations. This theory shows that the L-type calcium channel plays a unique role in causing the nonlinear dynamical behaviours necessary for EADs. We also summarize different mechanisms of phase-3 EADs. Based on the dynamical theory, we discuss the roles of each of the major ionic currents in the genesis of EADs, and potential therapeutic targets.

Indexed as

Action PotentialsAnimalsArrhythmias, CardiacCalcium Channels, L-TypeCalcium SignalingHeart Conduction SystemHumansIon ChannelsKineticsModels, CardiovascularMyocytes, CardiacNonlinear DynamicsPotassium ChannelsSodium ChannelsCalcium Channels, L-TypeIon ChannelsPotassium ChannelsSodium ChannelsArrhythmiasEarly afterdepolarizationsNonlinear dynamicsOscillationRepolarization reserve

Identifiers

PMID23619423
PMCPMC3687754

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.