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Fine-Tuning the Nanostructured Titanium Oxide Surface for Selective Biological Response
Niharika Rawat1, Metka Benčina1,2, Domen Paul2
1Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, SI-1000 Ljubljana, Slovenia.
ACS Applied Bio Materials
|December 8, 2023
Summary
Developing advanced cardiovascular stents requires new biomaterials. Surface treatments on Ti6Al4V implants improved cell interactions, reducing thrombosis and restenosis for better vascular implants.
Area of Science:
- Biomaterials Science
- Cardiovascular Engineering
- Surface Chemistry
Background:
- Cardiovascular diseases are a leading cause of death globally.
- Current cardiovascular stents made from Ti6Al4V can cause restenosis and thrombosis.
- There is a need for improved biomaterials to prevent these adverse effects.
Purpose of the Study:
- To optimize the surface properties of Ti6Al4V implants for cardiovascular applications.
- To investigate the effects of gaseous plasma and hydrothermal treatments on Ti6Al4V surfaces.
- To assess the impact of surface modifications on cellular responses relevant to stent performance.
Main Methods:
- Ti6Al4V surfaces were modified using gaseous plasma and hydrothermal treatments.
- Surface characterization included SEM, WCA, XPS, and XRD.
- In vitro studies assessed platelet adhesion/activation and endothelial/smooth muscle cell proliferation.
Main Results:
- Surface treatments altered the titanium oxide layer and surface nanotopography.
- These alterations significantly influenced cell interactions.
- Specific surface modifications demonstrated potential for selective cell proliferation.
Conclusions:
- Surface engineering of Ti6Al4V can create multifunctional biomaterial surfaces.
- Optimized surfaces can selectively promote desired cell proliferation, mitigating thrombosis and restenosis.
- This research advances the design of next-generation vascular implants.
