Table 2. Differential Expression of miRNAs in the CSB vs. PB in the AF Group.

miRNA	CSB expression	PB expression	Fold Change In CSB vs. PB	P-value	Expression Tendency
miR-4279	0.8724	0.3673	2.3754	0.0106	up
miR-K12-6-3p	0.2023	0.0716	2.825	0.0011	up
miR-1266	2.4621	0.2163	11.3824	0.0007	up
miR-625-3p	0.6967	0.2729	2.5531	0.0098	up
miR-3664-5p	0.1043	0.726	0.1437	0.0095	down
miR-423-5p	2.532	25.568	0.099	0.0148	down
miR-3591-3p	0.104	0.3201	0.3249	0.0448	down
miR-3171	0.0817	0.9338	0.0875	0.001	down

(CSB: coronary sinus blood; PB: peripheral blood).