NOS3 and atrial fibrillation: miR-99b-3p, miR-133a, and miR-99b expression reduced by almost 75%—expression of miR-325, miR-423-5p, and miR-451a reduced by 25% post-ablation.Decreased levels of NO in AF+ groups (both pre-ablation and post-ablation).Implication of miR-155, miR-24, and eNOS on AF pathogenesis (on pigs).