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A Method of Targeted Cell Isolation via Glass Surface Functionalization
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Bioactivity evolution of the surface functionalized bioactive glasses.

Klára Magyari1, Lucian Baia, Adriana Vulpoi

  • 1Faculty of Physics and Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes-Bolyai University, 400084, Cluj-Napoca, Romania.

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
|May 14, 2014
PubMed
Summary
This summary is machine-generated.

Surface modification of SiO2-CaO-P2O5 glasses with fibrinogen enhances bioactivity and blood compatibility. This bioactive coating promotes apatite layer formation, crucial for biomedical applications.

Keywords:
bioactive glassesbiological fluidsprotein adsorptionprotein conformationsurface modification

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Area of Science:

  • Biomaterials Science
  • Materials Chemistry
  • Biomedical Engineering

Background:

  • Bioactivity of SiO2-CaO-P2O5 glasses is indicated by calcium phosphate layer formation in simulated body fluid (SBF).
  • Surface modification via chemical bonding can preserve protein structure adsorbed on biomaterials.
  • Understanding surface interactions is key for developing biocompatible materials.

Purpose of the Study:

  • To evaluate the bioactivity and blood compatibility of SiO2-CaO-P2O5 glasses.
  • To investigate the effects of surface modification using aminopropyl-triethoxysilane and/or fibrinogen.
  • To assess the influence of protein adsorption on apatite layer formation and blood interaction.

Main Methods:

  • Immersion of modified SiO2-CaO-P2O5 glasses in simulated body fluid (SBF).
  • Surface functionalization with aminopropyl-triethoxysilane and/or fibrinogen.
  • Analysis of apatite-like layer growth.
  • Assessment of blood compatibility through β-sheet-β-turn ratio analysis.

Main Results:

  • Fibrinogen adsorption on glass surfaces stimulated the growth of an apatite-like layer.
  • Protein content in SBF influenced the apatite-like layer formation.
  • Materials exhibited good blood compatibility after adsorption of fibrinogen and bovine serum albumin.

Conclusions:

  • Surface modification of SiO2-CaO-P2O5 glasses with fibrinogen enhances bioactivity.
  • The study demonstrates improved blood compatibility following protein adsorption.
  • These findings support the potential of these modified glasses for biomedical applications.