Key result
Soluble thrombomodulin and PAI-1 levels significantly increased after catheter ablation in both restored sinus rhythm and recurrent AF groups (P<0.001).
Why the study?
Catheter ablation for AF requires evaluation by electrocardiography, prompting investigation of novel clinical markers to predict the restoration of sinus rhythm after ablation.
Do levels of soluble thrombomodulin and circulating miRNAs change after radiofrequency catheter ablation in patients with atrial fibrillation?
Observational (n=78)
Do levels of soluble thrombomodulin and circulating miRNAs change after radiofrequency catheter ablation in patients with atrial fibrillation?
Absolute Event Rate: 13.75% vs 11.55%
p-value: p=<.001
Measurement of soluble thrombomodulin and pri-miR-126 in blood may serve as useful biomarkers to reflect the condition of AF patients undergoing catheter ablation.
Post-ablation rises should not yet guide practice; hypothesis-generating for thrombomodulin/PAI-1 as AF monitoring biomarkers.
Atrial fibrillation (AF) is the most common cardiac arrhythmia in the world and has a high risk of thromboembolism. The most effective approach, catheter ablation, requires evaluation by electrocardiography. The aim of our study was to investigate novel clinical markers that predict restoration of sinus rhythm (SR) after catheter ablation. Seventy-eight consecutive patients with AF underwent catheter ablation and were separated into 2 groups: restored SR and recurrent AF. The levels of 4 blood proteins (serum or plasma) and 3 mature microRNAs (miRNAs) and their primary miRNAs (pri-miRNAs) in serum were measured before and after ablation, and the associations between each parameter were analyzed statistically. Soluble thrombomodulin (s-TM) and plasminogen activator inhibitor-1 (PAI-1) levels increased above baseline after ablation in both the restored SR (s-TM 11.55 [2.92] vs 13.75 [3.38], P < .001; PAI-1 25.74 [15.25] vs 37.79 [19.56], P < .001) and recurrent AF (s-TM 10.28 [2.78] vs 11.67 [3.37], P < .001; PAI-1 26.16 [15.70] vs 40.74 [22.55], P < .001) groups. Levels of C-reactive protein and asymmetric dimethylarginine were not significantly changed. Pri-miR-126 levels significantly decreased after ablation in the recurrent AF group, but the other miRNAs and pri-miRNAs did not. The measurement of s-TM and pri-miR-126 in blood was a useful tool to reflect the condition of AF patients with catheter ablation.
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Namino et al. (2019) conducted an observational in Atrial fibrillation (n=78). Catheter ablation vs. Baseline (pre-ablation) was evaluated on Soluble thrombomodulin (s-TM) levels in restored sinus rhythm group (p=<.001). Soluble thrombomodulin and PAI-1 levels significantly increased after catheter ablation in both restored sinus rhythm and recurrent AF groups (P<0.001).
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