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Updated: Sep 26, 2026
A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Molecular mechanisms of in-stent restenosis and approach to therapy with eluting stents
Ciro Indolfi1, Annalisa Mongiardo, Antonio Curcio
1Division of Cardiology, Magna Graecia University, Catanzaro, Italy. indolfi@unicz.it
Abstract:
Restenosis is the principal drawback of percutaneous coronary procedures. Until now, the only widely accepted way to reduce restenosis rate has been the stent. However, clinical restenosis still represents the major limitation of this technology. This article summarizes recent laboratory and clinical investigations concerning the mechanisms responsible for the transmission of mitogenic signals from plasma membrane to the nucleus in vascular smooth muscle cells that determine neointima formation after stent deployment. Recent experimental data on the impact of diabetes and physical exercise on restenosis also is reviewed. Finally, the new concept of local drugs that elute directly to the site of vascular injury from coated stents and the available clinical results obtained with rapamycin or paclitaxel-eluting stents are discussed.
Insights
Restenosis, a complication of coronary stenting, involves smooth muscle cell signaling. Drug-eluting stents show promise in reducing this neointima formation.
Area of Science:
- Cardiovascular biology
- Vascular smooth muscle cell signaling
- Medical device technology
Background:
- Restenosis remains a significant limitation of percutaneous coronary interventions, despite the widespread use of stents.
- Understanding the mechanisms of neointima formation after stent deployment is crucial for developing new therapeutic strategies.
Purpose of the Study:
- To review the mechanisms of mitogenic signal transmission in vascular smooth muscle cells leading to neointima formation.
- To examine the influence of diabetes and physical exercise on restenosis.
- To discuss the advancements and clinical outcomes of drug-eluting stents.
Main Methods:
- Review of laboratory and clinical investigations on signal transduction pathways.
- Analysis of experimental data regarding diabetes and exercise.
- Evaluation of clinical results from rapamycin and paclitaxel-eluting stents.
Main Results:
- Mitogenic signals from the plasma membrane to the nucleus in vascular smooth muscle cells drive neointima formation.
- Diabetes and physical exercise impact restenosis rates through various mechanisms.
- Drug-eluting stents, such as those coated with rapamycin or paclitaxel, have demonstrated clinical efficacy in reducing restenosis.
Conclusions:
- Elucidating signal transmission pathways is key to understanding and preventing restenosis.
- Lifestyle factors like diabetes and exercise play a role in restenosis.
- Drug-eluting stents represent a significant advancement in managing coronary restenosis after stenting.
