Evidence map›Paper›PMID 34396273›Full record

ArticleJACC. CardioOncology2020

Acute Effects of Ibrutinib on Ventricular Arrhythmia in Spontaneously Hypertensive Rats.

Beibei Du, Praloy Chakraborty, Mohammed Ali Azam, Stéphane Massé, Patrick F H Lai, Ahmed Niri, Daoyuan Si, Paaladinesh Thavendiranathan, Husam Abdel-Qadir, Filio Billia and 1 more

Open access · goldAbstract read
In one paragraph

Article in JACC. CardioOncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

17 citing papers in PubMed, 20 citations in OpenAlex.

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  12. Tyrosine kinase inhibitor-associated ventricular arrhythmias: a case series and review of literature.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2023
    Review
  13. Role of PARP and TRPM2 in VEGF Inhibitor-Induced Vascular Dysfunction.Journal of the American Heart Association · 2023
    Article
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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

11 authors at 4 institutions in 2 countries.

Beibei DuThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Praloy ChakrabortyThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Mohammed Ali AzamThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Stéphane MasséThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Patrick F H LaiThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Ahmed NiriThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Daoyuan SiThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Paaladinesh ThavendiranathanTed Rogers Program in Cardiotoxicity Prevention, Peter Munk Cardiac Center, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Husam Abdel-QadirTed Rogers Program in Cardiotoxicity Prevention, Peter Munk Cardiac Center, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Filio BilliaTed Rogers Program in Cardiotoxicity Prevention, Peter Munk Cardiac Center, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Kumaraswamy NanthakumarThe Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Ontario, Canada.
Toronto General Hospital · CAJilin University · CNUniversity Health Network · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Bruton's Tyrosine Kinase Inhibitor ibrutinib is associated with ventricular arrhythmia (VA) and sudden death. However, the pro-arrhythmic electrophysiological dysregulation that results from ibrutinib with age and cardiovascular disease is unknown.

objectivesThis study sought to investigate the acute effects of ibrutinib on left ventricular (LV) VA vulnerability, cytosolic calcium dynamics, and membrane electrophysiology in old and young spontaneous hypertensive rats (SHRs).

methodsLangendorff-perfused hearts of young (10 to 14 weeks) and old (10 to 14 months) SHRs were treated with ibrutinib (0.1 μmol/l) or vehicle for 30 min. Simultaneously, LV epicardial action potential and cytosolic calcium transients were optically mapped following an incremental pacing protocol. Calcium and action potential dynamics parameters were analyzed. VA vulnerability was assessed by electrically inducing ventricular fibrillations (VFs) in each heart. Western blot analysis was performed on LV tissues.

resultsIbrutinib treatment resulted in higher vulnerability to VF in old SHR hearts (27.5 ± 7.5% vs. 5.7 ± 3.7%; p = 0.026) but not in young SHR hearts (8.0 ± 4.9% vs. 0%; p = 0.193). In old SHR hearts, following ibrutinib treatment, action potential duration (APD) alternans (p = 0.008) and APD alternans spatial discordance (p = 0.027) were more prominent. Moreover, calcium transient duration 50 was longer (p = 0.032), calcium amplitude alternans ratio was significantly lower (p = 0.001), and time-to-peak of calcium amplitude was shorter (p = 0.037). In young SHR hearts, there were no differences in calcium and APD dynamics.

conclusionsIbrutinib-induced VA is associated with old age in SHR. Acute dysregulation of calcium and repolarization dynamics play important roles in ibrutinib-induced VF.

Indexed as

action potential duration alternansAF, atrial fibrillationAMPK, adenosine monophosphate-activated protein kinaseAPD, action potential durationCA, calcium alternanscalcium handlingCaMKII, Ca2+/calmodulin-dependent protein kinase IICaT, calcium transientCaTD, calcium transient durationDAD, delayed afterdepolarizationEAD, early afterpolarizationibrutinibLV, left ventricularPI3K, phosphoinositide 3-kinasePLB, phospholambanSCaE, spontaneous calcium elevationSHR, spontaneous hypertension ratspatial discordant repolarizationSR, sarcoplasmic reticulumVA, ventricular arrhythmiaventricular arrythmiasVF, ventricular fibrillation

Identifiers

PMID34396273
PMCPMC8352013
OpenAlexW3101089240

What Socratic 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 Socratic graph.