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Related Experiment Videos

Basic fibroblast growth factor promotes bone ingrowth in porous hydroxyapatite

J S Wang1, P Aspenberg

  • 1Department of Orthopedics, Lund University Hospital, Sweden.

Clinical Orthopaedics and Related Research
|December 1, 1996
PubMed
Summary

Basic fibroblast growth factor (bFGF) enhances tissue ingrowth into porous hydroxyapatite. Optimal bone ingrowth into this material requires specific bFGF doses, with carriers potentially influencing efficacy.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Porous hydroxyapatite derived from coral is a promising scaffold for bone regeneration.
  • Basic fibroblast growth factor (bFGF) is a potent mitogen and angiogenic factor with potential in tissue repair.

Purpose of the Study:

  • To investigate the effect of basic fibroblast growth factor (bFGF) on tissue ingrowth and bone differentiation within porous hydroxyapatite scaffolds.
  • To determine the optimal dosage and carrier effects of bFGF for promoting bone ingrowth.

Main Methods:

  • A bone chamber model was utilized in rat tibiae, implanting porous hydroxyapatite with varying doses of bFGF.
  • Tissue ingrowth and bone ingrowth distances were quantified histologically at different time points (4 and 6 weeks).

Related Experiment Videos

  • The influence of a hyaluronate gel carrier on bFGF efficacy was evaluated.

    • Main Results:

    • Low-dose bFGF (0.04 µg) with a hyaluronate carrier significantly increased bone ingrowth by 70% and total tissue ingrowth by 58% at 6 weeks.
    • Higher doses of bFGF or its use without a carrier showed varied effects, with some doses increasing total tissue ingrowth but not bone ingrowth.
    • The hyaluronate gel carrier appeared to reduce the optimal dose of bFGF required for enhanced bone regeneration.

    Conclusions:

    • Basic fibroblast growth factor can promote significant tissue and bone ingrowth into porous hydroxyapatite scaffolds.
    • The efficacy of bFGF is dose-dependent, and the use of a carrier can modulate its effect on bone regeneration.
    • These findings suggest potential for bFGF in enhancing the integration of hydroxyapatite bone grafts.