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Bone tissue engineering on calcium phosphate-coated titanium plates utilizing cultured rat bone marrow cells: a preliminary study

  • R. J. Dekker
  • J. D. De Bruijn
  • I. Van Den Brink
  • Y. P. Bovell
  • P. Layrolle
  • C. A. Van Blitterswijk
Article

Abstract

The use of osteoinductive in vitro tissue-coated implants in orthopaedic and dental surgery (e.g. revision hip arthroplasty), could result in a better fixation of these implants. However, this tissue engineering technology has only proved to be effective in porous materials and not on flat implant surfaces. In this study we have demonstrated that calcium phosphate-coated titanium plates with a layer of cultured osteogenic cells and their extracellular matrix can initiate bone formation in vivo. Both primary and subcultured rat bone marrow cells were grown on to biomimetic calcium phosphate-coated titanium plates. After 7 d of culture, in the presence or absence of dexamethasone, the implants were subcutaneously implanted in nude mice for 4 wk. Control samples, which consisted of calcium phosphate-coated plates without cultured cells and porous calcium phosphate particles with or without cultured cells, were also implanted subcutaneously. At autopsy, no bone formation could be detected on any of the control samples without cells and samples with subcultured cells, which were primary cultured in medium without dexamethasone. In contrast, clear de novo bone formation could be observed on the calcium phosphate-coated plates and in the porous calcium phosphate particles with primary or subcultured cells, which had been continuously cultured in medium with dexamethasone. These results indicate that this hybrid technology offers great potential for the fixation of flat bone replacement implants (e.g. artificial hips) in inferior bone in the future. © 1998 Kluwer Academic Publishers

Keywords

Dexamethasone Bone Formation Tissue Engineering Bone Tissue Engineering Osteogenic Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • R. J. Dekker
    • 1
  • J. D. De Bruijn
    • 2
  • I. Van Den Brink
    • 3
  • Y. P. Bovell
    • 3
  • P. Layrolle
    • 3
  • C. A. Van Blitterswijk
    • 3
  1. 1.University of TwenteNetherlands
  2. 2.Biomaterials Research GroupUniversity of LeidenThe Netherlands
  3. 3.IsoTis BVBilthovenThe Netherlands

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