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Novel bioactive glass-AuNP composites for biomedical applications
K Magyari1, T Nagy-Simon1, A Vulpoi1
1Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania.
Summary
Bioactive glasses incorporating gold nanoparticles (AuNPs) show enhanced bioactivity and protein adsorption. These AuNP-doped glasses maintain excellent cell viability, demonstrating their potential for medical applications.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Materials Chemistry
Background:
- Bioactive glasses are promising for medical applications.
- Gold nanoparticles (AuNPs) offer unique properties for biomaterials.
Purpose of the Study:
- To synthesize and characterize SiO2-CaO-P2O5 bioactive glasses doped with AuNPs.
- To evaluate the bioactivity, protein adsorption, and cell viability of these composite materials.
Main Methods:
- Sol-gel synthesis of glasses with incorporated Pluronic-nanogold hybrid nanoparticles.
- Characterization using UV-vis, XRD, FT-IR, TEM, and SEM.
- In vitro assessment of bioactivity, protein adsorption (serum albumin), and human keratinocyte cell viability.
Main Results:
- AuNP-doped glasses exhibited increased apatite layer formation in vitro.
- Apatite structure size and morphology (spherical and flower-like) were influenced by AuNP content.
- Protein adsorption and cell proliferation rates increased with AuNP concentration.
- Minor changes in protein secondary structure indicated biocompatibility.
Conclusions:
- Incorporation of AuNPs into bioactive glasses enhances bioactivity and protein adsorption.
- The composite materials demonstrate good biocompatibility and preserve AuNP properties.
- These AuNP-doped bioactive glasses show significant potential for biomedical applications.
