Serum level of transforming growth factor beta 1 is associated with left atrial voltage in patients with chronic atrial fibrillation

Level of TGF-β1 in peripheral serum is higher than that in coronary sinus, and serum level of TGF-β1 in coronary sinus is negatively associated with mean left atrial voltage in patients with CAF, angiotensin II receptor antagonists could affect TGF-β1 serum level.