Evidence map›Paper›PMID 22404917›Full record

ArticleBiophysical journal2012

In silico optimization of atrial fibrillation-selective sodium channel blocker pharmacodynamics.

Martin Aguilar-Shardonofsky, Edward J Vigmond, Stanley Nattel, Philippe Comtois

Abstract read
In one paragraph

Article in Biophysical journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed.

  1. Article
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  18. Article
  19. Computational approaches to understand cardiac electrophysiology and arrhythmias.American journal of physiology. Heart and circulatory physiology · 2012
    Review
  20. 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.

Martin Aguilar-ShardonofskyDepartment of Medicine, University of Montreal, Montreal, Canada.
Edward J Vigmond
Stanley Nattel
Philippe Comtois

Funding

Multi-scale Modeling of Calcium Mediated Triggered Activity in the HeartR01HL101196 · NHLBI · CALIFORNIA STATE UNIVERSITY NORTHRIDGE · PI SHIFERAW, YOHANNES · 2010 to 2013
$1.2M
CIHR MOP 44365CIHR MOP 6957NHLBI NIH HHS R01 HL101196
6 · The paper itself

Abstract

Atrial fibrillation (AF) is the most common type of clinical arrhythmia. Currently available anti-AF drugs are limited by only moderate efficacy and an unfavorable safety profile. Thus, there is a recognized need for improved antiarrhythmic agents with actions that are selective for the fibrillating atrium. State-dependent Na(+)-channel blockade potentially allows for the development of drugs with maximal actions on fibrillating atrial tissue and minimal actions on ventricular tissue at resting heart rates. In this study, we applied a mathematical model of state-dependent Na(+)-channel blocking (class I antiarrhythmic drug) action, along with mathematical models of canine atrial and ventricular cardiomyocyte action potentials, AF, and ventricular proarrhythmia, to determine the relationship between their pharmacodynamic properties and atrial-selectivity, AF-selectivity (atrial Na(+)-channel block at AF rates versus ventricular block at resting rates), AF-termination effectiveness, and ventricular proarrhythmic properties. We found that drugs that target inactivated channels are AF-selective, whereas drugs that target activated channels are not. The most AF-selective drugs were associated with minimal ventricular proarrhythmic potential and terminated AF in 33% of simulations; slightly fewer AF-selective agents achieved termination rates of 100% with low ventricular proarrhythmic potential. Our results define properties associated with AF-selective actions of class-I antiarrhythmic drugs and support the idea that it may be possible to develop class I antiarrhythmic agents with optimized pharmacodynamic properties for AF treatment.

Indexed as

Computational BiologyModels, BiologicalAction PotentialsAnimalsAnti-Arrhythmia AgentsAtrial FibrillationDogsHeart AtriaHeart VentriclesKineticsSodium Channel BlockersSodium ChannelsAnti-Arrhythmia AgentsSodium Channel BlockersSodium Channels

Identifiers

PMID22404917
PMCPMC3296055

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.