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Related Experiment Video

Updated: Aug 27, 2025

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Drug-Eluting, Bioresorbable Cardiovascular Stents─Challenges and Perspectives.

Julio A Vallejo-Zamora1, Yadira I Vega-Cantu1, Ciro Rodriguez1,2

  • 1Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, Nuevo León64849, Mexico.

ACS Applied Bio Materials
|September 23, 2022
PubMed
Summary

Drug-eluting stents (DESs) improve blood flow by delivering drugs to prevent restenosis. Novel nanoencapsulation techniques enhance DES safety and efficacy, reducing risks like thrombosis and myocardial infarction.

Keywords:
bare-metal stentsbioresorbable cardiovascular stentsdrug deliverydrug-eluting stentseverolimusliposomesmagnesiummetallic alloysnanocarriers

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Materials Science

Background:

  • Coronary heart disease and diabetes are leading global causes of death.
  • Atherosclerosis, caused by plaque buildup, reduces blood flow and necessitates interventions like stenting.
  • Stent restenosis, due to endothelial tissue overgrowth, and thrombosis, a risk with early drug-eluting stents (DESs), remain significant clinical challenges.

Purpose of the Study:

  • To review current advancements in stent design, fabrication, and functionalization for cardiovascular applications.
  • To explore drug encapsulation and controlled elution strategies, focusing on reducing adverse events like thrombosis.
  • To highlight novel nanoencapsulation techniques and their application in bioresorbable DESs.

Main Methods:

  • Review of current literature on stent technology, materials, and drug delivery systems.
  • Analysis of mechanical properties, metal alloys, and degradation characteristics of stents.
  • Investigation of polymeric coatings, layer-by-layer techniques, and nanoencapsulation methods (liposomes, emulsions).

Main Results:

  • Drug-eluting stents (DESs) utilize antiproliferative drugs to manage restenosis.
  • Everolimus, delivered via lipid systems, shows promise in mitigating thrombosis and myocardial infarction risk.
  • Advances in nanoencapsulation and bioresorbable materials are enhancing DES performance and safety.

Conclusions:

  • Optimized stent design, material selection, and controlled drug elution are crucial for effective cardiovascular treatment.
  • Novel nanoencapsulation techniques, including liposomes and emulsions, offer improved drug delivery for DESs.
  • Bioresorbable, drug-eluting stents represent a significant advancement in minimizing long-term complications and improving patient outcomes.