scholarly journals Impact of Routine Use of Drug-eluting Stents in Contemporary Interventional Cardiology at a Tertiary Center: One-decade Experience of the DESIRE Registry

Author(s):  
J. Ribamar Costa Junior ◽  
Amanda G.M.R. Sousa ◽  
Adriana Costa Moreira ◽  
Ricardo A. da Costa ◽  
Galo Maldonado ◽  
...  
Author(s):  
Rajeev Nair ◽  
Vaelan Molian ◽  
Pal Molian

Drug-eluting stents (DES) have profoundly affected the field of interventional cardiology by dramatically reducing the problem of in-stent restenosis. However, the adverse, long-term, thrombosis raises the questions on the safety profile of DES. Femtosecond pulsed laser nanotexturing of metallic stents was performed to minimize thrombosis by improving three fundamental characteristics of DES: (1) increase the availability of drug for elution; (2) enhance the adhesion between stent and drug; and (3) minimize and, if possible, eliminate the polymer carrier. Results of laser-induced nanoprotrusion/drug interactions confirmed these benefits and indicated that femtosecond laser nanotexturing is a potential cost-effective solution for improving the performance and safety of DES while eliminating the need for postfinishing operations.


2011 ◽  
Vol 287-290 ◽  
pp. 1956-1959 ◽  
Author(s):  
Min Kun Jian ◽  
Wen Ping Chen ◽  
Miao Feng ◽  
Hong Bing Zhan

Despite drug eluting stents (DESs) have revolutionized the interventional cardiology over the past decade since the first DES became commercially available nearly a decade ago, burst release of loaded drugs and late thrombosis caused by polymer coatings of the stents are high concerned. In this situation, inorganic coatings, such as silica-based hybrid materials, have aroused researcher’s interest. In this study, aspirin (ASA) was incorporated into the sol-gel derived silica matrix with polyethylene glycol (PEG) as an organic modifier to improve the flexibility and extensibility of the inorganic matrices. We also used L-3,4-dihydroxyphenylalanine (L-DOPA) as a bio-adhesive reagent to enhance interface adhesion between the coating materials and the 316L stainless steel substrate. The results show that the introduction of D-LOPA can greatly improve the coating quality by enhancement of uniformity and adhesion. The loading ASA was slowly released from the coatings and burst release was effectively inhibited owing to the encapsulation of ASA molecules in the silica-PEG matrices.


2012 ◽  
Vol 25 (6) ◽  
pp. 611-621 ◽  
Author(s):  
FABRIZIO D’ASCENZO ◽  
ERIKA CAVALLERO ◽  
GIUSEPPE BIONDI-ZOCCAI ◽  
CLAUDIO MORETTI ◽  
PIERLUIGI OMEDÈ ◽  
...  

Medicina ◽  
2007 ◽  
Vol 43 (3) ◽  
pp. 183 ◽  
Author(s):  
Virgilijus Grinius ◽  
Ramūnas Navickas ◽  
Ramūnas Unikas

Since the first percutaneous transluminal coronary angioplasty performed by A. Gruentzig in 1977, percutaneous coronary interventions have become the most important treatment modality for coronary heart disease. Coronary angioplasty carried a significant risk of coronary flow-limiting dissections and restenosis during the first six months following the procedure. Two main studies comparing percutaneous transluminal coronary angioplasty and coronary stenting (STRESS and BENESTENT) performed in 1994 showed a significant reduction in restenosis rate using stents. Thus, until now stents are the most widely used devices for coronary intervention despite two problems: subacute stent thrombosis (1–2%) and still high restenosis rate (5–40%). Subacute stent thrombosis occurs within the first month after stent placement and can be prevented using the double antiplatelet regimen with aspirin and clopidogrel. Some risk of subacute thrombosis remains beyond the first month when drug-eluting stents are used. This requires prolonged antiplatelet therapy. Drugeluting stents are the most significant innovation in interventional cardiology. They can reduce the incidence of restenosis in native stable coronary arteries to 3–5%. However, the long-term studies comparing bare-metal stents and drug-eluting stents did not show any significant differences in the rate of major adverse cardiac events (death, myocardial infarction), especially in patients with diabetes after the treatment of bifurcational lesions. According to proposed recommendations, drug-eluting stents should be used in small vessels, restenotic lesions, and in saphenous vein grafts. Despite some disadvantages, the results of coronary stenting using drugeluting stents continue to improve.


2012 ◽  
Vol 62 (4) ◽  
pp. 473-496 ◽  
Author(s):  
Maulik J. Patel ◽  
Sanjay S. Patel ◽  
Nidhi S. Patel ◽  
Natvarlal M. Patel

Drug-eluting stents (DESs) prevail in the treatment of carotid artery diseases in the interventional cardiology world owing to their efficacy for significant reduction of restenosis. A current successful DES requires a polymer coating for drug delivery. Clinical trials examining several pharmaceutical agents have demonstrated marked reduction in restenosis following stenting. The development of DES is one of the major revolutions in the field of interventional cardiology. The ideal drug to prevent restenosis must have an anti-proliferative and anti-migratory effect on smooth muscle cells but, on the other hand, it must also enhance re-endothelialization in order to prevent late thrombosis. Additionally, it should effectively inhibit the anti-inflammatory response after balloon induced arterial injury. Although DES have significantly reduced the angiographic restenosis rate and have improved clinical outcomes, late thrombosis and restenosis remain an important subject of ongoing research.


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