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Updated: Jun 20, 2026

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart
Published on: June 7, 2015
Hydrogels loaded with different substances for treating heart failure: a promising therapy
Ran Meng1,2, Weiqiang Xiao1,2, Shisen Liang1,2
1Department of Heart Center, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Insights
Injectable hydrogels show promise for treating acute myocardial infarction (AMI) by delivering therapeutic agents directly to damaged heart tissue. These biomaterials facilitate cardiac repair and combat heart failure following myocardial infarction.
Area of Science:
- Cardiovascular Research
- Biomaterials Science
- Regenerative Medicine
Background:
- Acute myocardial infarction (AMI) causes significant cardiomyocyte death, leading to heart failure and arrhythmias in millions globally.
- Current treatments for AMI, including reperfusion, do not fully address adverse cardiac remodeling and subsequent heart failure.
- Excessive fibrosis post-AMI impairs cardiac function, necessitating novel therapeutic approaches.
Purpose of the Study:
- To elucidate the progression of coronary atherosclerotic heart disease to myocardial infarction and injury.
- To highlight the advantages of hydrogels as a superior therapeutic strategy for myocardial infarction.
- To review various therapeutic agents and hydrogel formulations for treating myocardial injury.
Main Methods:
- Review of mechanisms underlying myocardial infarction progression and hydrogel-based therapies.
- Discussion of bioactive molecules, drugs, cells, exosomes (exos), and miRNA for myocardial repair.
- Analysis of experimental data on therapeutic agent-loaded hydrogels for myocardial injury.
Main Results:
- Hydrogels offer biocompatibility, degradability, and injectability for targeted delivery of therapeutics to the myocardium.
- Various agents, including exosomes and miRNA, delivered via hydrogels show potential for promoting cardiac repair.
- Therapeutic agent-loaded hydrogels demonstrate experimental efficacy in treating myocardial injury.
Conclusions:
- Injectable hydrogels represent a promising therapeutic strategy for acute myocardial infarction and heart failure.
- Further research into hydrogel formulations is crucial for overcoming existing challenges and advancing treatment prospects.
- Hydrogel-based delivery systems can target damaged myocardium to promote regeneration and improve cardiac function post-MI.
Abstract:
Acute myocardial infarction (AMI), which causes cardiomyocyte death due to ischemia, affects ∼7 million people annually worldwide, and its mortality rate is greater than one-third. Furthermore, AMI severely impairs cardiac function, leading to heart failure and fatal arrhythmias. While timely reperfusion improves survival, adverse remodeling and subsequent heart failure remain major challenges. After cardiomyocyte death, excessive fibrosis in and around the infarct decreases heart size and impairs cardiac function, leading to heart failure. Current end-stage treatments (e.g., drugs and devices) cannot repair damaged tissue, but injectable biomaterials, particularly hydrogels, offer promising new therapeutic strategies; their excellent biocompatibility, degradability, high water content, and injectability allow the targeted delivery of bioactive molecules, drugs, cells, and exosomes (exos) directly into the damaged myocardium to promote repair after AMI. Here, we describe the mechanism of progression from coronary atherosclerotic heart disease to myocardial infarction and myocardial injury and the superiority of hydrogels for treating this disease. We also discuss the mechanisms of action of different bioactive molecules, drugs, cells, exos, miRNA and two therapeutic agents-loaded hydrogels for treating myocardial injury and the experimental effects of these hydrogels. Finally, we discuss the existing problems associated with injectable hydrogels and the prospects of using hydrogel formulations in the treatment of myocardial infarction.
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