AnoxiaMyocytes, CardiacMyocardiumHeartCells, CulturedAnimals, NewbornCardiomegalyCell HypoxiaMyocardial ContractionOxygenHypoxia, BrainRats, Sprague-DawleyRats, WistarHeart VentriclesCalciumTurtlesMitochondria, HeartMyocardial Reperfusion InjurySignal TransductionCardiotonic AgentsSarcomeresEmbryonic Stem CellsApoptosisCell SizeGATA4 Transcription FactorTime FactorsIsoproterenolCell DifferentiationL-Lactate DehydrogenaseCalcium Channels, L-TypeSodium-Calcium ExchangerMyocardial IschemiaHypertrophyAdenosine TriphosphateCalcium SignalingConnexin 43Muscle CellsCell SurvivalMice, TransgenicAnaerobiosisArtemiaSarcoplasmic Reticulum Calcium-Transporting ATPasesSarcolemmaCardiac MyosinsReactive Oxygen SpeciesSodium CyanideCardiomyopathiesMyoblasts, CardiacMuscle ProteinsVentricular MyosinsPatch-Clamp TechniquesVentricular RemodelingAdrenergic beta-AgonistsPyruvate DecarboxylaseSarcoplasmic ReticulumAction PotentialsMice, Inbred C57BLRNA, MessengerHeart FailureEnzyme ActivationInduced Pluripotent Stem CellsPhosphorylationCardiomyopathy, DilatedAtrial Natriuretic FactorMicroscopy, ConfocalCotyledonGene Expression RegulationExcitation Contraction CouplingBlotting, WesternMembrane Potential, MitochondrialMyocardial InfarctionEnzyme InhibitorsRegenerationDisease Models, AnimalGlucoseGene ExpressionOxidative StressPhenylephrineAdenoviridaeHydrogen PeroxideReverse Transcriptase Polymerase Chain ReactionPotassium CyanideGlycolysisCytoprotectionMice, KnockoutPotassiumHeart AtriaCell LineMitochondriaDose-Response Relationship, DrugStem CellsMyofibrilsAngiotensin IIOxygen ConsumptionEndothelin-1Caspase 3Energy MetabolismCytosolRyanodine Receptor Calcium Release ChannelAdaptation, Physiological