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Adsorption of peroxidase on titanium surfaces: A pilot study
M Ahariz1, J Mouhyi, P Louette
1Faculty of Medicine, Free University of Brussels, Route de Lennik 808, B-1070 Brussels, Belgium.
Journal of Biomedical Materials Research
|September 28, 2000
Summary
This study shows peroxidase enzymes can adsorb onto titanium surfaces, both in lab tests and within the oral environment. This protein adsorption on titanium is significant for biomedical applications.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Enzyme Kinetics
Background:
- Titanium is widely used in biomedical implants due to its biocompatibility.
- Understanding protein adsorption on titanium surfaces is crucial for implant success.
- Peroxidases play roles in biological processes and can influence surface interactions.
Purpose of the Study:
- To investigate the adsorption of lactoperoxidase onto titanium surfaces in vitro.
- To quantify the amount of adsorbed peroxidase.
- To examine peroxidase adsorption on titanium implants in vivo within the oral environment.
Main Methods:
- In vitro adsorption assays using titanium foils and lactoperoxidase.
- Spectrophotometric quantification of adsorbed enzyme.
- X-ray photoelectron spectroscopy (XPS) to confirm protein incorporation.
- In vivo analysis of peroxidase adsorption on titanium healing abutments.
Main Results:
- Quantified in vitro adsorption of lactoperoxidase on titanium surfaces.
- XPS confirmed significant increase in surface nitrogen, indicating protein incorporation.
- Demonstrated in vivo adsorption of oral peroxidases onto titanium abutments after two weeks.
Conclusions:
- Peroxidase enzymes readily adsorb onto titanium surfaces under in vitro conditions.
- Protein adsorption on titanium surfaces is confirmed by surface analysis techniques.
- Peroxidase adsorption occurs in vivo on titanium implants in the oral cavity.