Abstract
Acute myocardial infarction (MI) caused by ischemia is the most common cause of cardiac dysfunction. Here, we demonstrated the use of polyethylene glycol-fibrinogen (PF) hydrogels for sustained dual delivery of vascular endothelial growth factor (VEGF) and angiopoietin-1 (ANG-1) to enhance myocardial repair and function. Treated animals showed the best improvement in cardiac function, highest degree of cardiac muscle preservation, and arteriogenesis. This study demonstrates that PF hydrogels can simultaneously provide mechanical support to attenuate adverse myocardial remodelling, and a pro-angiogenic benefit from the sustained VEGF and ANG1 delivery that culminates in a restorative effect following MI.
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