SERPINA12 and atrial fibrillation: Vaspin expression demonstrated a trend similar to that of leptin expression, with the highest mRNA expression levels in PAT (SR F = 17.820, P < 0.001; AF F = 3.997, P = 0.025), and vaspin expression in SAT and EAT was higher in the AF group than that in the SR group (AF SAT vs. SR SAT, 1.71 ± 1.25 vs. 1.07 ± 0.59, P = 0.049; AF EAT vs. SR EAT, 2.39 ± 1.39 vs. 1.14 ± 0.61, P = 0.001).