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Cardiovascular Diseases Commons

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Medical University of South Carolina

Heart Failure

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Full-Text Articles in Cardiovascular Diseases

Role Of Macrophages In Regression Of Myocardial Fibrosis Following Alleviation Of Left Ventricular Pressure Overload, Lily Neff Apr 2023

Role Of Macrophages In Regression Of Myocardial Fibrosis Following Alleviation Of Left Ventricular Pressure Overload, Lily Neff

MUSC Theses and Dissertations

Antecedent conditions that affect the heart, such as aortic stenosis (AS), can develop into left ventricular pressure overload (LVPO). LVPO is associated with increased myocardial interstitial fibrosis, specifically fibrillar collagen, that leads to increased myocardial stiffness. Patients undergoing surgical aortic valve replacement (SAVR) to correct AS demonstrate significant but incomplete regression of fibrosis. Although current therapies normalize hemodynamic load, treatments that regress collagen content within the myocardium remain a critical need. To elucidate cellular mechanisms of this persistent fibrosis in LVPO, we utilized a transverse aortic constriction (TAC) and removal of the constriction (unTAC) murine model. Outputs were assessed for: …