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Published on: June 29, 2022
GLP-1 receptor agonists and myocardial metabolism in atrial fibrillation
Jiani Zhong1,2, Hang Chen1,2, Qiming Liu1
1Department of Cardiovascular Medicine, Second Xiangya Hospital, Central South University, Changsha, 410011, China.
Insights
Glucagon-like peptide-1 receptor agonists (GLP-1RAs) may improve heart cell metabolism and reduce atrial fibrillation (AF) risk, particularly in patients with diabetes and obesity. Further research is needed to confirm clinical benefits.
Area of Science:
- Cardiology
- Metabolic Medicine
- Pharmacology
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia linked to metabolic conditions like hypertension, diabetes, and obesity.
- Cardiomyocytes exhibit distinct metabolic profiles crucial for ATP production, which are altered in AF.
- Existing risk factors for AF include heart failure (HF), diabetes mellitus (T2DM), and obesity.
Purpose of the Study:
- To review metabolic alterations in cardiomyocytes during AF.
- To explore the potential of GLP-1RAs in mitigating AF-related metabolic changes.
- To assess the impact of GLP-1RAs on myocardial metabolism in the context of AF risk factors.
Main Methods:
- Review of existing literature on cardiomyocyte metabolism in AF.
- Analysis of the known effects of GLP-1RAs on metabolic pathways, oxidative stress, inflammation, and mitochondrial function.
- Examination of clinical trial data and preclinical findings regarding GLP-1RA efficacy in AF and related conditions.
Main Results:
- Significant metabolic shifts occur in cardiomyocytes affected by AF.
- GLP-1RAs demonstrate pleiotropic effects, including reduced oxidative stress, inflammation, and improved mitochondrial function.
- While clinical trial outcomes for AF prevention have been mixed, GLP-1RAs show promise in improving myocardial metabolism.
Conclusions:
- GLP-1RAs may offer a therapeutic strategy to improve myocardial metabolism in individuals at risk for AF.
- Targeting metabolic pathways with GLP-1RAs could potentially lower AF incidence, especially in patients with T2DM and obesity.
- Further clinical investigation is warranted to solidify the role of GLP-1RAs in AF management.
Abstract:
Atrial fibrillation (AF) is the most common cardiac arrhythmia. Many medical conditions, including hypertension, diabetes, obesity, sleep apnea, and heart failure (HF), increase the risk for AF. Cardiomyocytes have unique metabolic characteristics to maintain adenosine triphosphate production. Significant changes occur in myocardial metabolism in AF. Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have been used to control blood glucose fluctuations and weight in the treatment of type 2 diabetes mellitus (T2DM) and obesity. GLP-1RAs have also been shown to reduce oxidative stress, inflammation, autonomic nervous system modulation, and mitochondrial function. This article reviews the changes in metabolic characteristics in cardiomyocytes in AF. Although the clinical trial outcomes are unsatisfactory, the findings demonstrate that GLP-1 RAs can improve myocardial metabolism in the presence of various risk factors, lowering the incidence of AF.
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