Blood vessel formation after soft-tissue implantation of hyaluronan-based hydrogel supplemented with copper ions

G. Giavaresi, P. Torricelli, P. M. Fornasari, R. Giardino, R. Barbucci, G. Leone

Research output: Contribution to journalArticle

Abstract

The possibility of ameliorating bone healing of implanted bone allografts is a field of great interest. Early vascular invasion is a key factor in bone allograft incorporation. It is well known that copper ions (Cu 2+) show a proangiogenic action favouring the development of new vessels. In this work a hyaluronan based 50% hydrogel (Hyal-50%) was enriched with (Cu 2+) and its proangiogenic activity was evaluated. Fifteen Sprague Dawley female rats were submitted to the subcutaneous implantation of Hyal-50%, freeze-dried bone allografts, Hyal-50%-Cu 2+, freeze-dried bone allografts plus Hyal-50% and freeze-dried bone allografts plus Hyal-50%-Cu 2+. One month later, histomorphometric analysis evidenced the presence of a fibrous-reactive capsule around all specimens showing significant differences among groups (p2+ plus freeze-dried bone (15.2%, p2+. Statistical analysis showed a significant (p2+ and Hyal-50%-Cu 2+ plus freeze-dried bone group when compared to other groups. The present preliminary results suggest the advantages offered by the combined use of a well-known biocompatible and tissue healing promoting material (Hyal-50%) and a new technique that consists of stimulating tissue vascularization using Cu 2+ and that bone allograft incorporation may benefit from this technology.

Original languageEnglish
Pages (from-to)3001-3008
Number of pages8
JournalBiomaterials
Volume26
Issue number16
DOIs
Publication statusPublished - Jun 2005

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Keywords

  • Copper ions
  • Freeze-dried bone allograft
  • Hyaluronan
  • Hydrogel
  • Soft-tissue implants
  • Vessel formation

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

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