Numerous studies identify specific microRNA (miRNA) expression profiles associated with atrial fibrillation (AF), changes in plasmamiRNA expression in pre-and post-operativeAFpatients who have received catheterisation . The correlation of atrial fibrillation recurrence and above-mentioned microRNA after bipolar radiofrequency ablation remain poorly characterized.
This study aimed to reveal disease-related biomarkers by detecting plasmamiRNA expression in AF patients, and examining the levels of AF-specific miRNAs in patients after bipolar radiofrequency ablation, in order to help gauge therapeutic effects and assess prognosis.
A total of 50 Han Chinese patients with AF who had received bipolar radiofrequency ablation recruited to the study. Atrial fibrillation-specific plasma miRNAs were detected by sequencing and quantitative reverse transcription polymerase chain reaction. According to AF recurrence rate of about 30%, the expression levels of AF-specific miRNAs were investigated in15 post-operative AF patients and 35 patients with normal sinus after ablation,to explore changes in miRNA expression.
