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Updated: Jun 13, 2025

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
Published on: August 18, 2016
Protective role of acetylcholine and the cholinergic system in the injured heart
Clara Liu Chung Ming1,2, Xiaowei Wang3,4,5, Carmine Gentile1,2
1School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW, Australia.
Insights
Acetylcholine (ACh) plays a vital role in heart health and preventing cardiovascular diseases (CVDs). New strategies like stem cell therapy and gene therapy show promise for increasing ACh and regenerating heart tissue.
Area of Science:
- Cardiovascular Science
- Neurocardiology
- Pharmacology
Background:
- The heart possesses both neuronal and non-neuronal cholinergic systems.
- Acetylcholine (ACh) is crucial for maintaining cardiac homeostasis.
- Reduced ACh levels are linked to early cardiovascular disease (CVD) onset.
Purpose of the Study:
- To review the multifaceted roles of the cholinergic system in cardiac function.
- To evaluate current and novel strategies for modulating cardiac ACh levels.
- To explore advanced therapeutic approaches for cardiac repair.
Main Methods:
- Literature review of studies on the cardiac cholinergic system.
- Analysis of existing interventions targeting ACh levels (e.g., vagus nerve stimulation, cholinesterase inhibitors).
- Exploration of emerging regenerative strategies (stem cells, gene therapy, microRNAs, nanoparticles).
Main Results:
- The cholinergic system, via ACh, is integral to cardiac homeostasis and offers protection against CVD.
- Current methods to boost ACh have limitations.
- Novel approaches like stem cell therapy, gene therapy, microRNAs, and nanoparticle delivery present promising alternatives.
Conclusions:
- Restoring or enhancing cardiac ACh levels is a key therapeutic target for CVD.
- Emerging regenerative strategies hold significant potential for treating injured heart tissue.
- Further research into these novel ACh-modulating therapies is warranted for clinical translation.
Abstract:
This review explores the roles of the cholinergic system in the heart, comprising the neuronal and non-neuronal cholinergic systems. Both systems are essential for maintaining cardiac homeostasis by regulating the release of acetylcholine (ACh). A reduction in ACh release is associated with the early onset of cardiovascular diseases (CVDs), and increasing evidence supports the protective roles of ACh against CVD. We address the challenges and limitations of current strategies to elevate ACh levels, including vagus nerve stimulation and pharmacological interventions such as cholinesterase inhibitors. Additionally, we introduce alternative strategies to increase ACh in the heart, such as stem cell therapy, gene therapy, microRNAs, and nanoparticle drug delivery methods. These findings offer new insights into advanced treatments for regenerating the injured human heart.
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