Myocytes, CardiacMyocardiumCells, CulturedHeartAnimals, NewbornCardiomegalyMyocardial ContractionScienceRats, Sprague-DawleyHeart VentriclesRats, WistarCalciumMitochondria, HeartResearch PersonnelSignal TransductionMutationEmbryonic Stem CellsMyocardial Reperfusion InjuryCardiotonic AgentsCell DifferentiationSarcomeresApoptosisCell SizeMice, TransgenicGATA4 Transcription FactorCalcium Channels, L-TypeIsoproterenolHypertrophyPhenotypeConnexin 43Muscle CellsMice, KnockoutMice, Inbred C57BLCalcium SignalingSarcoplasmic Reticulum Calcium-Transporting ATPasesRNA, MessengerSarcolemmaDisease Models, AnimalCardiac MyosinsMuscle ProteinsSodium-Calcium ExchangerCardiomyopathiesMolecular Sequence DataMyocardial IschemiaMyoblasts, CardiacTime FactorsGene Expression RegulationVentricular MyosinsVentricular RemodelingAdrenergic beta-AgonistsHistory, 20th CenturyResearchSarcoplasmic ReticulumBiomedical ResearchGene ExpressionHeart FailureCell SurvivalInduced Pluripotent Stem CellsBlotting, WesternReactive Oxygen SpeciesStem CellsPhosphorylationCardiomyopathy, DilatedReverse Transcriptase Polymerase Chain ReactionRegenerationCell HypoxiaAtrial Natriuretic FactorCell LineMicroscopy, ConfocalExcitation Contraction CouplingBase SequenceMyocardial InfarctionMutation, MissensePatch-Clamp TechniquesPhenylephrineNobel PrizeEnzyme ActivationAdenoviridaeTranscription FactorsCytoprotectionImmunohistochemistryMembrane Potential, MitochondrialHeart AtriaMyosin Heavy ChainsL-Lactate DehydrogenaseModels, AnimalAction PotentialsHistory, 21st CenturyMyofibrilsAngiotensin IIEndothelin-1Gene Expression Regulation, DevelopmentalTransfectionCaspase 3PedigreeOxidative StressAmino Acid SequenceResearch Support as TopicRyanodine Receptor Calcium Release ChannelEnzyme Inhibitors