ArticleEuropace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology2025
Mitochondrial damage mediates STING activation driving obesity-mediated atrial fibrillation.
Article in Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- The Effect of Weight Loss and Metabolic Interventions on Recurrence After Atrial Fibrillation Ablation.Journal of clinical medicine · 2026Review
- Emerging roles of the cGAS/STING pathway in cardiovascular diseases.The Journal of clinical investigation · 2026Review
- Berberine Stabilizes the Arrhythmogenic Substrate in Obese Rats by Klotho-Mediated Attenuation of Oxidative Stress and Inflammation.International journal of molecular sciences · 2026Article
- Mitochondrial dysfunction drives ZBP1-mediated PANoptosis to increase the susceptibility of heart failure with preserved ejection fraction-associated atrial fibrillation.Journal of advanced research · 2026Article
- Burden and age-specific trends of atrial fibrillation/atrial flutter from 1990 to 2023: a growing challenge among younger and middle-aged adults.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2026Article
- Impairment of mitochondrial quality control exacerbates diabetes-related atrial fibrillation by cGAS-STING signaling pathway and cardiomyocyte-macrophage crosstalk.Theranostics · 2026Article
- Oxidative Stress, Mitochondrial Homeostasis, and Sirtuins in Atrial Fibrillation.International journal of molecular sciences · 2025Review
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Abstract
aimsObesity is a significant risk factor for atrial fibrillation (AF), but the mechanisms by which obesity contributes to AF are not fully understood. Recent studies have indicated that the Stimulator of Interferon Genes (STING) signalling, mediated by mitochondrial damage, plays a crucial role in cardiac remodelling in various metabolic and cardiovascular diseases. This study aims to explore the role of STING in obesity-mediated AF and its potential mechanisms. METHODS AND
resultsIn this study, rats were divided into four groups: two groups received tail vein injections of AAV9-cTnT-STING siRNA and were fed either a normal diet or a high-fat diet (HFD) for 12 weeks; the other two groups received injections of AAV9-cTnT-NC siRNA and were similarly fed either a normal diet or a HFD. The atrial STING signalling, AF vulnerability, electrical remodelling, and substrate remodelling were assessed in all groups. Results showed that the induction of AF was increased in obese rats, accompanied by severe mitochondrial damage and upregulation of the STING inflammatory signalling cascade. STING activation was associated with atrial fibrosis, cardiomyocyte apoptosis, and substrate remodelling, including alterations in the gap junction protein CX40 and ion channels. Additionally, STING was linked to excessive calcium transfer from the endoplasmic reticulum to the mitochondria. Knockdown of STING prevented AF vulnerability and both electrical and substrate remodelling in obese rats.
conclusionMitochondrial damage-mediated activation of the STING signalling pathway promotes obesity-induced atrial remodelling and the occurrence of AF.
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