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Modulating Cardiac Remodeling After Myocardial Infarction, Upendra Chalise
Modulating Cardiac Remodeling After Myocardial Infarction, Upendra Chalise
Theses & Dissertations
Cardiac remodeling after myocardial infarction (MI) is indicated by infarct wall thinning, reduced ejection fraction, and dilation of the left ventricle (LV). Inflammation presides in the early days of MI as a key event in cardiac wound healing. Infiltration of inflammatory cells, predominantly neutrophils and macrophages, is stimulated by ischemic cardiomyocytes that secrete inflammatory cues. This dissertation focused on identifying factors that influence cardiac remodeling after MI. S100A9 is a neutrophil-derived factor identified that exacerbated infarct wall thinning and cardiac dilation by increasing neutrophil and macrophage infiltration. Similarly, murinoglobulin 1 (Mug1) and galectin (Lgals)3 were macrophage-derived factors identified that regulate …