Long-term transcranial ultrasound stimulation regulates neuroinflammation to ameliorate post-myocardial infarction cardiac arrhythmia and remodeling

Sympathetic overactivation and neuroinflammation in the paraventricular nucleus (PVN) are crucial factors in post-myocardial infarction (MI) cardiac remodeling and ventricular arrhythmias (VAs). Prior study has indicated that low-intensity focused ultrasound stimulation could attenuate sympathetic neuroinflammation within the PVN to prevent the occurrence of VAs in acute MI model. Meanwhile, the cGAS-STING pathway has shown potential to ameliorate neuroinflammatory response. However, the effect and mechanisms of long-term transcranial ultrasound stimulation (LTUS) for modulating neuroinflammation in the chronic stage of MI remain unclear.