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Biomedical Glasses

Editor-in-Chief: Boccaccini, Aldo R.

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2299-3932
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Angiogenic Effect of Bioactive Borate Glass Microfibers and Beads in the Hairless Mouse

Richard J. Watters
  • Corresponding author
  • Department of Biological Sciences and 2Graduate Center for Materials Research, Missouri University of Science and Technology, Rolla, MO 65401
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Roger F. Brown
  • Corresponding author
  • Department of Biological Sciences and 2Graduate Center for Materials Research, Missouri University of Science and Technology, Rolla, MO 65401
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Delbert E. Day
  • Corresponding author
  • Graduate Center for Materials Research Missouri University of Science and Technology
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2015-12-24 | DOI: https://doi.org/10.1515/bglass-2015-0017

Abstract

The purpose of this project was to investigate the angiogenic mechanism of bioactive borate glass for soft tissue repair in a ‘hairless’ SKH1 mouse model. Subcutaneous microvascular responses to bioactive glass microfibers (45S5, 13-93B3, and 13-93B3Cu) and bioactive glass beads (13-93, 13-93B3, and 13-93B3Cu) were assessed via: noninvasive imaging of skin microvasculature; histomorphometry of microvascular densities; and quantitative PCR measurements of mRNA expression of VEGF and FGF-2 cytokines. Live imaging via dorsal skin windows showed the formation at twoweeks of a halo-like structure infused with microvessels surrounding implanted boratebased 13-93B3 and 13-93B3Cu glass beads, a response not observed with silicate-based 13-93 glass beads. Quantitative histomorphometry of tissues implanted with plugs of 45S5, 13-93B3, and 13-93B3Cu glass microfibers revealed microvascular densities that were 1.6-, 2.3-, and 2.7-times higher, respectively, than the sham control valueswhereas 13-93, 13-93B3, and 13-93B3Cu glass beads caused the microvascular density to increase 1.3-, 1.6-, and 2.5-fold, respectively, relative to sham controls. Quantitative PCR measurements indicate a marginally significant increased expression of VEGF mRNA in tissues with 13-93B3Cu glass beads, an outcome that supported the hypothesis that copper-doped borate glass could promote VEGF expression followed by angiogenesis for enhanced wound healing.

Keywords: Angiogenesis; copper-doped bioactive borate glass; bioactive glass microfibers; bioactive glass beads; in vivo; soft tissue

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About the article

Received: 2015-10-15

Accepted: 2015-12-05

Published Online: 2015-12-24


Citation Information: Biomedical glasses, Volume 1, Issue 1, ISSN (Online) 2299-3932, DOI: https://doi.org/10.1515/bglass-2015-0017.

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© 2015 R. J. Watters et al.. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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