HypertrophyMuscle DevelopmentHypertrophy, Left VentricularCardiomegalyMyoD ProteinMyoblastsMyogeninMyogenic Regulatory Factor 5Muscle, SkeletalMyoblasts, SkeletalMyogenic Regulatory FactorsMusclesHypertrophy, Right VentricularCell DifferentiationMyocardiumMuscle ProteinsMyocytes, CardiacMuscle Fibers, SkeletalSatellite Cells, Skeletal MuscleGene Expression Regulation, DevelopmentalPAX7 Transcription FactorMEF2 Transcription FactorsSomitesCells, CulturedOrgan SizeSignal TransductionHeartMyosin Heavy ChainsEchocardiographyVentricular RemodelingDesminRegenerationHeart VentriclesRNA, MessengerCardiomyopathy, HypertrophicHypertensionMuscle CellsCell EnlargementCell LineGene Expression RegulationPaired Box Transcription FactorsCell FusionMyostatinTranscription FactorsCell SizeMice, TransgenicChick EmbryoFibrosisAtrial Natriuretic FactorCalcineurinBlood PressureMesodermDisease Models, AnimalRats, Sprague-DawleyMice, KnockoutDNA-Binding ProteinsAngiotensin IIMice, Inbred C57BLMyocardial ContractionAnimals, NewbornGene ExpressionTime FactorsHeart FailureFibroblast Growth Factor 6ExtremitiesTrans-ActivatorsAdenoidsRats, Inbred SHRTranscription, GeneticMonocrotalineMolecular Sequence DataImmunohistochemistryCreatine KinaseBase SequenceRats, WistarEndomyocardial FibrosisTransfectionPhenotypeVentricular Function, LeftVentricular PressureIn Situ HybridizationNFATC Transcription FactorsStem CellsRats, Inbred WKYHemodynamicsElectrocardiographyBody WeightEmbryo, NonmammalianPhenylephrineNotochordPhosphorylationCobra Cardiotoxin ProteinsBlotting, WesternUp-RegulationReverse Transcriptase Polymerase Chain ReactionMyosinsCardiomegaly, Exercise-InducedHomeodomain ProteinsZebrafish ProteinsSarcomeres