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OBJECTIVES The purpose of this study was to test if nitric oxide (NO) could improve microvascular perfusion and decrease tissue injury in a porcine model of myocardial ischemia and reperfusion (I/R). BACKGROUND Inhaled NO is a selective pulmonary vasodilator with biologic effects in remote vascular beds. METHODS In 37 pigs, the midportion of the left(More)
The aim of this multicenter pilot study was to evaluate the acute safety and efficacy of the dexamethasone-eluting stent (0.5 microg/mm(2) of stent) implanted in patients with de novo single-vessel disease. This study included 71 patients, 42% of whom had unstable angina pectoris. An appropriately sized BiodivYsio Matrix Lo stent loaded with a total(More)
Reperfusion therapy for myocardial infarction is limited by significant re-occlusion rates and less-than-optimal myocardial tissue perfusion. It was the objective of this study to assess and compare the effect of ticagrelor, the first reversibly binding oral P2Y12 receptor antagonist, with that of clopidogrel, in conjunction with thrombolytic therapy, on(More)
Ample cell adhesion to scaffolds is essential for effective bone tissue engineering. Chitosan/hydroxyapatite (CS/HA) scaffolds with channel-shaped and spherically shaped pore morphologies were prepared via in situ compositing hybridization in combination with lyophilization. The sizes of channel-shaped and spherically shaped pores of the CS/HA scaffolds(More)
BACKGROUND In-stent restenosis may be prevented by impregnating an antiproliferative agent in a polymer from a stent platform. This approach requires both an antiproliferative agent effective in small doses and a biocompatible polymer. METHODS A series of new biodegradable elastomeric poly(ester-amide)(co-PEA) polymers having functional carboxyl groups(More)
Polymer coating can optimize the surface characteristics of metallic coronary stents and serve as a vehicle for local drug delivery. Major problems, however, include the lack of biocompatibility of the polymers used and the limited amount of drug that can be loaded onto the stent. Stainless-steel stents were spray-coated or spray-coated combined with a(More)
BACKGROUND Polymer-based, drug-eluting stents, are currently under extensive investigation in the conquest against in-stent restenosis. Concern remains, however, about potential long-term lack of biocompatibility of the polymers used in these studies. Therefore, this study aimed to evaluate in porcine coronary arteries (1) the in vivo biocompatibility of a(More)
BACKGROUND The purpose of this study was to investigate in vivo the arterial wall temperature after coronary stent implantation in pigs. METHODS We performed cardiac catheterization in 20 pigs with normal coronary arteries. Arterial wall temperature was studied with a thermography system that uses a 4-thermistor sensor tip. A segment was selected in the(More)
Adult mesenchymal stem cells (MSCs) have been shown to spontaneously express cardiac proteins (CP) in vitro and to improve cardiac function after transplantation into experimentally induced acute myocardial infarction (AMI). However, if these effects are the result of MSC cardiac differentiation or a mere cooperative cellular interaction is a matter of(More)