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Injectable Acellular Hydrogels for Cardiac Repair

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Abstract

Injectable hydrogels are being developed as potential translatable materials to influence the cascade of events that occur after myocardial infarction. These hydrogels, consisting of both synthetic and natural materials, form through numerous chemical crosslinking and assembly mechanisms and can be used as bulking agents or for the delivery of biological molecules. Specifically, a range of materials are being applied that alter the resulting mechanical and biological signals after infarction and have shown success in reducing stresses in the myocardium and limiting the resulting adverse left ventricular (LV) remodeling. Additionally, the delivery of molecules from injectable hydrogels can influence cellular processes such as apoptosis and angiogenesis in cardiac tissue or can be used to recruit stem cells for repair. There is still considerable work to be performed to elucidate the mechanisms of these injectable hydrogels and to optimize their various properties (e.g., mechanics and degradation profiles). Furthermore, although the experimental findings completed to date in small animals are promising, future work needs to focus on the use of large animal models in clinically relevant scenarios. Interest in this therapeutic approach is high due to the potential for developing percutaneous therapies to limit LV remodeling and to prevent the onset of congestive heart failure that occurs with loss of global LV function. This review focuses on recent efforts to develop these injectable and acellular hydrogels to aid in cardiac repair.

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Authors and Affiliations

  1. Department of Bioengineering, University of Pennsylvania, 240 Skirkanich Hall, 210 S. 33rd Street, Philadelphia, PA, 19104, USA

    Elena Tous, Brendan Purcell, Jamie L. Ifkovits & Jason A. Burdick

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  1. Elena Tous
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  2. Brendan Purcell
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  3. Jamie L. Ifkovits
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  4. Jason A. Burdick
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Correspondence to Jason A. Burdick.

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Elena Tous and Brendan Purcell contributed equally.

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Tous, E., Purcell, B., Ifkovits, J.L. et al. Injectable Acellular Hydrogels for Cardiac Repair. J. of Cardiovasc. Trans. Res. 4, 528–542 (2011). https://doi.org/10.1007/s12265-011-9291-1

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  • DOI: https://doi.org/10.1007/s12265-011-9291-1

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