Myocardial Infarction Clinical Trial
Official title:
Six-month Endothelial and Microcirculatory Function of the Bioactive Sirolimus-eluting Combo Stent Versus the Polymer-free Biolimus-eluting Biofreedom Stent in Patients With ST-segment Elevation Myocardial Infarction
A total of 50 patients with ST-elevation myocardial infarction (STEMI) undergoing primary-percutaneous coronary intervention (PPCI) will be randomized to two different coronary stents: BIOFREEDOM vs. COMBO stent. All patients will undergo to 6-month scheduled coronary angiography to evaluate the endothelial function response of the distal coronary segment and other functional parameters.
The bioengineered COMBO stent (Orbus Neich, Fort Lauderdale, Florida, United States) has a dual-therapy strategy, which combines a sirolimus-eluting coating with an anti-CD34 antibody layer to promote vessel healing. Sirolimus release (5 μg/mm) is completed in 30 days, and the biodegradable polymer disappears within 90 days. CD34 antibodies are immobilized on the surface of the stent and capture circulating endothelial progenitor cells (EPCs). The captured EPCs are triggered by sheer stress from the circulating blood and other cell signals to differentiate and mature into endothelial cells. COMBO Plus is the only stent with a biological coating that actively repairs the vessel morphology. However, little is known regarding the endothelial function after stent implantation. ;
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