Citric acid functionalized nitinol stent surface promotes endothelial cell healing

© 2021 The Authors. Journal of Biomedical Materials Research Part A published by Wiley Periodicals LLC..

While drug-eluting stents containing anti-proliferative agents inhibit proliferation of smooth muscle cells (SMCs), they also delay the regrowth of the endothelial cells which can result in subsequent development of restenosis. Acidic extracellular environments promote cell anchorage and migration by inducing conformational change in integrins, the main cell adhesion proteins. This study addresses the feasibility of a citric acid (CA) functionalized nitinol stent for improving vascular biocompatibility, specifically enhancing endothelialization. CA functionalized nitinol vascular stents are compared to commercial bare metal (Zilver Flex) and paclitaxel eluting stents (Zilver PTX) in terms of re-endothelialization. To study the effect of stent coatings, a stent conditioned media methodology was developed in an attempt to represent in vivo conditions. Overall, distinct advantages of the CA functionalized nitinol stent over commercial Zilver PTX DES and Zilver Flex BMS stents in terms of endothelial cell adhesion, migration, and proliferation are reported. These novel findings indicate the potential of a CA functionalized stent to serve as a bioactive and therapeutic surface for re-endothelialization, perhaps in combination with a SMC proliferation inhibitor coating, to prevent restenosis.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:109

Enthalten in:

Journal of biomedical materials research. Part A - 109(2021), 9 vom: 22. Sept., Seite 1549-1559

Sprache:

Englisch

Beteiligte Personen:

Ceresnakova, Miriama [VerfasserIn]
Murray, David [VerfasserIn]
McGourty, Kieran D [VerfasserIn]
Butler, James [VerfasserIn]
Neilan, John [VerfasserIn]
Soulimane, Tewfik [VerfasserIn]
Hudson, Sarah P [VerfasserIn]

Links:

Volltext

Themen:

2968PHW8QP
2EWL73IJ7F
Alloys
Citric Acid
Citric acid
Culture Media, Conditioned
Drug coating
Endothelialization
Journal Article
Nitinol
Proliferation
Research Support, Non-U.S. Gov't
Vascular stent

Anmerkungen:

Date Completed 23.02.2022

Date Revised 23.02.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/jbm.a.37150

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM321832515