Abstract
Restenosis remains the principal limitation of percutaneous coronary
intervention (PCI). We have learned from animal studies that constrictive
remodeling is the principal mechanism of restenosis after balloon
angioplasty. In contrast, in-stent restenosis is related to neointimal
hyperplasia. These data were confirmed in humans by intravascular
ultrasound (IVUS). After balloon arterial injury, oxidative stress is
increased and contributes to endothelial dysfunction, macrophage activation,
and release of cytokines and growth factors. In the past decade, several
antioxidants have been evaluated in various animal models after balloon
angioplasty. Probucol and vitamins (E with or without C) effectively
reduced restenosis by promoting favorable remodeling (i.e., enlargement
remodeling). Moreover, these treatments decreased neointimal hyperplasia
which is the target for in-stent restenosis. In an era of nearly 100% stent
implantation, it is now time to evaluate their efficacy in animal models of instent restenosis after either systemic administration or local delivery.
intervention (PCI). We have learned from animal studies that constrictive
remodeling is the principal mechanism of restenosis after balloon
angioplasty. In contrast, in-stent restenosis is related to neointimal
hyperplasia. These data were confirmed in humans by intravascular
ultrasound (IVUS). After balloon arterial injury, oxidative stress is
increased and contributes to endothelial dysfunction, macrophage activation,
and release of cytokines and growth factors. In the past decade, several
antioxidants have been evaluated in various animal models after balloon
angioplasty. Probucol and vitamins (E with or without C) effectively
reduced restenosis by promoting favorable remodeling (i.e., enlargement
remodeling). Moreover, these treatments decreased neointimal hyperplasia
which is the target for in-stent restenosis. In an era of nearly 100% stent
implantation, it is now time to evaluate their efficacy in animal models of instent restenosis after either systemic administration or local delivery.
Original language | Undefined/Unknown |
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Title of host publication | Antioxidants and Cardiovascular Disease |
DOIs | |
Publication status | Published - 2006 |
Externally published | Yes |