Background:We studied the role of the mineralocorticoid receptor (MR) for atrial fibrotic remodeling. Results: Increased 11-hydroxysteroid dehydrogenase type 2 in atrial fibrillation enhances mineralocorticoid receptor profibrotic signaling through connective tissue growth factor, lysyl oxidase, and microRNA-21.
Conclusion:The MR regulates fibrogenesis in atrial fibrillation. Significance: The MR may represent a target for the prevention of atrial fibrosis.