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Updated: Jun 3, 2026

Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants
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Early interactions between leukocytes and three different potentially bioactive titanium surface modifications.

Anna Arvidsson1, Per Malmberg, Per Kjellin

  • 1Department of Biomaterials, Göteborg University, 405 30 Göteborg, Sweden. anna.arvidsson@biomaterials.gu.se

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
|March 29, 2011
PubMed
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Titanium surface modifications affect early inflammatory responses. Hydroxyapatite coatings and simulated body fluid immersion increase leukocyte reactive oxygen species, indicating heightened inflammation.

Area of Science:

  • Biomaterials Science
  • Immunology
  • Surface Chemistry

Background:

  • Titanium implants are widely used in orthopedics and dentistry.
  • Surface modifications aim to improve osseointegration and reduce inflammatory responses.
  • Understanding early cellular interactions with modified surfaces is crucial for implant success.

Purpose of the Study:

  • To compare the early inflammatory interactions of leukocytes with three distinct bioactive titanium surface modifications.
  • To evaluate the effect of simulated body fluid (SBF) immersion on these interactions.
  • To correlate surface properties with the measured inflammatory response.

Main Methods:

  • Titanium discs were modified using alkali/heat treatment, sodium fluoride, or hydroxyapatite (HA) coating.

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  • Surfaces were immersed in SBF to promote calcium-phosphate deposition.
  • Leukocyte response was assessed by measuring reactive oxygen species (ROS) and viable cell coverage.
  • Surface topography, morphology, and chemistry were analyzed using interferometry and SEM/EDX.

    • Main Results:

    • HA-coated titanium induced a significantly higher respiratory burst response compared to other surfaces (p < 0.0005).
    • SBF immersion led to increased ROS production across all groups (p < 0.0005).
    • SBF immersion diminished statistically significant differences in inflammatory response between surface types.

    Conclusions:

    • Different titanium surface modifications elicit distinct early inflammatory responses.
    • Calcium phosphate compounds, such as HA, appear to enhance the inflammatory response.
    • SBF immersion alters surface characteristics, influencing leukocyte interactions and inflammatory potential.