Myocytes, CardiacMyocardiumCardiomegalyHeartCells, CulturedAnimals, NewbornMyocardial ContractionRats, Sprague-DawleyHeart VentriclesApoptosisHypertrophyGATA4 Transcription FactorRats, WistarVentricular RemodelingMitochondria, HeartCell SizeSignal TransductionMyocardial Reperfusion InjuryCalciumCardiotonic AgentsSarcomeresMice, TransgenicCardiomyopathiesSarcoplasmic Reticulum Calcium-Transporting ATPasesEmbryonic Stem CellsCell DifferentiationVentricular MyosinsDisease Models, AnimalMuscle CellsCell EnlargementTime FactorsMice, Inbred C57BLHeart FailureCalcium SignalingIsoproterenolMyocardial IschemiaMyoblasts, CardiacMyocardial InfarctionCardiac MyosinsConnexin 43Atrial Natriuretic FactorCell SurvivalFibrosisMice, KnockoutMuscle ProteinsAdenoviridaePhenylephrineRegenerationExcitation Contraction CouplingCardiomyopathy, DilatedGene Expression RegulationTreatment OutcomeReactive Oxygen SpeciesDose-Response Relationship, DrugIn Situ Nick-End LabelingPhosphorylationSodium-Calcium ExchangerCalcium Channels, L-TypeMyosin Heavy ChainsBlotting, WesternCaspase 3Heart InjuriesSarcolemmaAdrenergic beta-AgonistsEndothelin-1RNA, MessengerOxidative StressHeart DiseasesEnzyme ActivationCell ProliferationReverse Transcriptase Polymerase Chain ReactionSarcoplasmic ReticulumGene ExpressionCalcineurinStem CellsCell HypoxiaEnzyme InhibitorsAngiotensin IIProto-Oncogene Proteins c-aktCell LineModels, AnimalCytoprotectionCell DeathMembrane Potential, MitochondrialCardiotoxinsHypertrophy, Left VentricularNecrosisImmunohistochemistryInduced Pluripotent Stem CellsMicroscopy, ConfocalDiabetic CardiomyopathiesL-Lactate DehydrogenaseHeart AtriaReceptors, Adrenergic, beta-1Up-RegulationMyofibrilsCell Culture TechniquesVentricular Function, LeftHydrogen PeroxideDoxorubicin