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Chitosan and composite microsphere-based scaffold for bone tissue engineering: evaluation of tricalcium phosphate content influence on physical and biological properties

  • Tissue Engineering Constructs and Cell Substrates
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Abstract

In the hereby presented work the authors describe a technique of high-compression-resistant biodegradable bone scaffold preparation. The methodology is based on the agglomeration of chitosan (CH) and chitosan/β-tricalcium phosphate (CH/TCP) microspheres and represents a novel approach to 3D matrices design for bone tissue engineering application. The materials were prepared from high deacetylation degree chitosan. The authors describe the method for scaffold fabrication, essential properties of the materials manufactured and the influence of various TCP concentrations on material morphology, mechanical properties (for dry and hydrated materials) and preliminary study on the interaction between CH or CH/TCP scaffolds and within cultured MG-63 osteoblast-like cells. The properties of the obtained materials were significantly affected by the calcium phosphate content, which had a particular influence on the granule microstructure, size distribution and inner biomaterial pore size. The water uptake ability was found to be lower for the materials enriched with the inorganic phase and tended to decrease with the increasing calcium phosphate concentration. The evaluation of mechanical properties has revealed that scaffolds produced with the usage of granule-based technology display a potential to be used as a load-bearing material since the Young’s modulus values were limited to the range of 200–500 MPa for dry materials and 15–20 MPa for the hydrated state of the scaffolds. The cell number, identified in three time points (48 h, 7 and 14 days) by Pico Green assay, was lower for the materials enriched with inorganic phase (75 % of control), however cell distribution, when compared to CH only biomaterial, was acknowledged as steadier on the surface of the material containing the highest calcium phosphate concentration.

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Acknowledgments

This work has been supported by the European Union in the framework of European Social Fund through the Warsaw University of Technology Development Programme1# and Grant No. NR 13-0008-10/2010 from The National Centre for Research and Development.

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Authors and Affiliations

  1. Biomedical Engineering Laboratory, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645, Warsaw, Poland

    Martyna Kucharska & Tomasz Ciach

  2. Polish Academy of Science, Institute of Fundamental Technological Research, Warsaw, Poland

    Martyna Kucharska

  3. Department of Biophysics and Human Physiology, Medical University of Warsaw, Warsaw, Poland

    Katarzyna Walenko & Małgorzata Lewandowska-Szumieł

  4. Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland

    Tomasz Brynk & Jakub Jaroszewicz

Authors
  1. Martyna Kucharska
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  2. Katarzyna Walenko
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  3. Małgorzata Lewandowska-Szumieł
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  4. Tomasz Brynk
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  5. Jakub Jaroszewicz
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  6. Tomasz Ciach
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Correspondence to Martyna Kucharska.

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Kucharska, M., Walenko, K., Lewandowska-Szumieł, M. et al. Chitosan and composite microsphere-based scaffold for bone tissue engineering: evaluation of tricalcium phosphate content influence on physical and biological properties. J Mater Sci: Mater Med 26, 143 (2015). https://doi.org/10.1007/s10856-015-5464-9

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  • DOI: https://doi.org/10.1007/s10856-015-5464-9

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