2018
Acute Left Ventricular Unloading Reduces Atrial Stretch and Inhibits Atrial Arrhythmias
Ishikawa K, Watanabe S, Lee P, Akar FG, Lee A, Bikou O, Fish K, Kho C, Hajjar RJ. Acute Left Ventricular Unloading Reduces Atrial Stretch and Inhibits Atrial Arrhythmias. Journal Of The American College Of Cardiology 2018, 72: 738-750. PMID: 30092950, PMCID: PMC6160394, DOI: 10.1016/j.jacc.2018.05.059.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsArrhythmias, CardiacAtrial FibrillationFemaleMaleMyocardial InfarctionStroke VolumeSwineVentricular Function, LeftConceptsLV end-diastolic pressureEnd-diastolic pressureLV unloadingMyocardial infarctionSubacute myocardial infarctionPressure-volume loopsLA pressureAortic regurgitationRyanodine receptor phosphorylationLA tissuesLV loadingReduced LV ejection fractionAtrial arrhythmia inducibilityLV assist deviceLV ejection fractionMean LA pressureLeft ventricular performancePressure-volume catheterMaximum LA volumeLV loading conditionsReceptor phosphorylationMedian 55NOX2 levelsArrhythmia inducibilityAtrial stretch
2010
Left ventricular repolarization heterogeneity as an arrhythmic substrate in heart failure.
Akar FG. Left ventricular repolarization heterogeneity as an arrhythmic substrate in heart failure. Minerva Cardioangiologica 2010, 58: 205-12. PMID: 20440250.ChaptersMeSH KeywordsArrhythmias, CardiacCardiomyopathy, DilatedHeart FailureHumansVentricular Function, LeftConceptsHeart failureElectrophysiological substrateSudden cardiac deathCalcium handling proteinsRepolarization gradientsVentricular repolarization heterogeneityHeterogeneous remodelingCardiac deathCardiac functionArrhythmic substrateLeft ventriculeHandling proteinsMuscle layerPathophysiological remodelingRepolarization heterogeneityTissue levelsOrgan system levelArrhythmiasGap junctionsIon channelsOverview of mechanismsSub-cellular changesRemodelingFailureVentricule
2007
Dynamic changes in conduction velocity and gap junction properties during development of pacing-induced heart failure
Akar FG, Nass RD, Hahn S, Cingolani E, Shah M, Hesketh GG, DiSilvestre D, Tunin RS, Kass DA, Tomaselli GF. Dynamic changes in conduction velocity and gap junction properties during development of pacing-induced heart failure. AJP Heart And Circulatory Physiology 2007, 293: h1223-h1230. PMID: 17434978, DOI: 10.1152/ajpheart.00079.2007.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsCardiac Pacing, ArtificialConnexin 43Disease Models, AnimalDogsDown-RegulationGap JunctionsHeart Conduction SystemHeart FailureMalePhosphorylationProtein IsoformsTachycardia, VentricularTime FactorsVentricular Function, LeftVentricular PressureVentricular RemodelingConceptsEnd-stage heart failureHeart failureConduction velocityMechanical dysfunctionCV slowingPacing-induced heart failureDevelopment of HFOnset of HFMechanical functionCx43 isoformConduction abnormalitiesCx43 lateralizationAdvanced stageBaseline levelsMyocardial preparationsPhosphorylation of Cx43High-resolution optical mappingSustained downregulationMarked increaseDephosphorylated Cx43LVEDPGap junction propertiesConduction changesDysfunctionTime course