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Nanotechnology in interventional cardiology.

Tillmann Cyrus1, Samuel A Wickline, Gregory M Lanza

  • 1Division of Cardiology, University of Missouri, One Hospital Drive, Columbia, MO, USA. cyrust@health.missouri.edu

Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
|July 13, 2011
PubMed
Summary
This summary is machine-generated.

Nanotechnology offers a novel approach to prevent restenosis after angioplasty by delivering drugs directly to the vascular wall. This method aims to avoid delayed healing and reduce the need for long-term anti-platelet therapy.

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Area of Science:

  • Cardiovascular research
  • Biomaterials science
  • Nanomedicine

Background:

  • Atherectomy and balloon angioplasty treat atherosclerotic stenoses, often followed by stent implantation.
  • Drug-eluting stents (DES) minimize restenosis but cause delayed re-endothelialization, necessitating prolonged dual anti-platelet therapy (DAPT) to prevent stent thrombosis.
  • Current DES generations have not resolved the issue of impaired endothelial healing.

Purpose of the Study:

  • To explore nanotechnology-based local drug delivery as a strategy to prevent restenosis.
  • To investigate methods that achieve restenosis prevention without impeding endothelial healing.
  • To compare novel nanoparticulate agents for targeted drug delivery within the vascular wall.

Main Methods:

  • Review and comparison of nanoparticulate agents for drug delivery.
  • Analysis of molecular targets, targeting mechanisms, and drug-delivery propensities.
  • Evaluation of biocompatibility of nanotechnology-based approaches.

Main Results:

  • Nanotechnology enables targeted drug delivery to specific molecular sites in the injured vascular wall (media and adventitia).
  • This targeted delivery has the potential to prevent restenosis while allowing unimpeded endothelial healing.
  • The approach is compatible with bare metal or biodegradable stents.

Conclusions:

  • Nanotechnology-based drug delivery presents a promising alternative to current DES for preventing restenosis.
  • Targeted delivery minimizes side effects like delayed re-endothelialization and reduces the need for prolonged DAPT.
  • Further review of nanoparticulate agents is needed to optimize vascular wall drug delivery.