TNF and atrial fibrillation: As shown, irradiation induced increases of IL-6 and TNF-α after irradiation compared to the sham irradiation (P < 0.05, P < 0.01), PF-H could increase the levels of IL-6 and TNF-α compared to model group (P < 0.001, P < 0.001), and AF-H significantly increased IL-6 and TNF-α levels compared to control group (P < 0.001, P < 0.001).