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Achieving complete endothelialization is crucial for cardiovascular stent success. This review explores how microenvironment factors cause endothelial dysfunction, impacting stent performance and leading to failure.

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Area of Science:

  • Cardiovascular research
  • Biomaterials science
  • Cell biology

Background:

  • Complete endothelialization of cardiovascular stents is vital for long-term patency and preventing complications.
  • Endothelial dysfunction, characterized by insufficient antithrombotic and barrier functions, is a primary cause of stent failure.
  • The microenvironment of endothelial cells (ECs) on stents is closely linked to dysfunction, influenced by inflammation, oxidative stress, hemodynamics, and barrier integrity.

Purpose of the Study:

  • To review the molecular mechanisms underlying endothelial dysfunction on cardiovascular stents.
  • To highlight current efforts aimed at improving endothelial function in stented vessels.
  • To analyze current stent designs from an endothelial function perspective to guide the development of next-generation stents.

Main Methods:

  • Literature review focusing on vascular pathophysiology and endothelial cell biology.
  • Analysis of clinical outcomes related to stent failure and endothelial dysfunction.
  • Evaluation of current stent design principles concerning their impact on endothelial function.

Main Results:

  • Four major factors contribute to endothelial dysfunction: inflammatory responses, oxidative stress, altered hemodynamic shear stress, and impaired endothelial barrier.
  • These factors collectively impede the normal growth and function of endothelial cells on stents.
  • Understanding these mechanisms is key to developing strategies that restore physiological endothelial functions.

Conclusions:

  • Improving endothelial function is paramount for enhancing cardiovascular stent performance and patient outcomes.
  • Next-generation stent designs should prioritize the restoration of endothelial physiological functions, such as anti-thrombosis and anti-stenosis.
  • Addressing the microenvironmental causes of endothelial dysfunction offers promising avenues for novel stent development.