Synthetic recovery of impulse propagation in myocardial infarction via silicon carbide semiconductive nanowires.

Synthetic recovery of impulse propagation in myocardial infarction via silicon carbide semiconductive nanowires.
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DOI:
10.1038/s41467-021-27637-2
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发表时间:
2022-01-10
影响因子:
16.6
通讯作者:
Miragoli M
Miragoli M
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lagonegro P;Rossi S;Salvarani N;Lo Muzio FP;Rozzi G;Modica J;Bigi F;Quaretti M;Salviati G;Pinelli S;Alinovi R;Catalucci D;D'Autilia F;Gazza F;Condorelli G;Rossi F;Miragoli M

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Myocardial infarction causes 7.3 million deaths worldwide, mostly for fibrillation that electrically originates from the damaged areas of the left ventricle. Conventional cardiac bypass graft and percutaneous coronary interventions allow reperfusion of the downstream tissue but do not counteract the bioelectrical alteration originated from the infarct area. Genetic, cellular, and tissue engineering therapies are promising avenues but require days/months for permitting proper functional tissue regeneration. Here we engineered biocompatible silicon carbide semiconductive nanowires that synthetically couple, via membrane nanobridge formations, isolated beating cardiomyocytes over distance, restoring physiological cell-cell conductance, thereby permitting the synchronization of bioelectrical activity in otherwise uncoupled cells. Local in-situ multiple injections of nanowires in the left ventricular infarcted regions allow rapid reinstatement of impulse propagation across damaged areas and recover electrogram parameters and conduction velocity. Here we propose this nanomedical intervention as a strategy for reducing ventricular arrhythmia after acute myocardial infarction. Silicon-based materials have the ability to support bioelectrical activity. Here the authors show how injectable silicon carbide nanowires reduce arrhythmias and rapidly restore conduction in a myocardial infarction model.
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