Key result
Seven blood metabolites are linked to declining atrial function in paroxysmal AF.
Why the study?
Patients with PAF may exhibit reversible changes in atrial function at an early stage, making the identification of biomarkers crucial for delaying disease progression.
Are specific peripheral blood metabolites associated with atrial functional impairment in patients with paroxysmal atrial fibrillation?
Observational
Are specific peripheral blood metabolites associated with atrial functional impairment in patients with paroxysmal atrial fibrillation?
Seven peripheral blood metabolites were identified as potential biomarkers for early atrial functional impairment in patients with paroxysmal atrial fibrillation, which may help in identifying patients at risk of disease progression.
Suggests metabolic profiling combined with CMR strain may detect early paroxysmal AF changes; leaves open.
Atrial fibrillation (AF) is the most common clinical arrhythmia. Patients with paroxysmal atrial fibrillation (PAF) may exhibit reversible changes in atrial function at an early stage. Identifying biomarkers for this stage is crucial for delaying disease progression. This study integrated cardiac magnetic resonance (CMR) atrial strain analysis with untargeted metabolomics. Despite similar left atrial sizes, significant differences in atrial strain were observed among PAF patients. Seven differential metabolites-phosphatidylcholine, inosine, bilirubin, biliverdin, 3-methylhistidine, L-tryptophan, and pantothenic acid-were identified as potential biomarkers associated with declining atrial function. These findings suggest that peripheral blood metabolites are associated with atrial functional impairment in PAF patients. However, these exploratory findings warrant further investigation in larger prospective cohorts.
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Shi et al. (2026) conducted an observational in Paroxysmal atrial fibrillation (PAF). Peripheral blood metabolites was evaluated on Atrial functional impairment (measured by CMR atrial strain). Seven differential peripheral blood metabolites were identified as potential biomarkers associated with declining atrial function in patients with paroxysmal atrial fibrillation.
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