Monomeric GTP-Binding Proteins/antagonists & inhibitors; Multiprotein Complexes/metabolism; Myocardial Infarction/physiopathology; Neuropeptides/antagonists & inhibitors; TOR Serine-Threonine Kinases/metabolism; Ventricular Remodeling/physiology; Animals; Apoptosis/physiology; Cardiomegaly/prevention & control; Cardiotonic Agents/pharmacology; Cardiotonic Agents/therapeutic use; Cells, Cultured; Drug Evaluation, Preclinical/methods; Gene Deletion; Mechanistic Target of Rapamycin Complex 1; Mice; Mice, Inbred C57BL; Monomeric GTP-Binding Proteins/genetics; Monomeric GTP-Binding Proteins/physiology; Myocardial Infarction/metabolism; Myocardial Infarction/prevention & control; Myocytes, Cardiac/metabolism; Myocytes, Cardiac/pathology; Neuropeptides/genetics; Neuropeptides/physiology; Ras Homolog Enriched in Brain Protein; Saponins/pharmacology; Saponins/therapeutic use; Signal Transduction/drug effects; Signal Transduction/physiology; Triterpenes/pharmacology; Triterpenes/therapeutic use; Ventricular Remodeling/drug effects