Influence of polysaccharide composition on the biocompatibility of pullulan/dextran-based hydrogels
Autor: | Patrick Portes, Liliane Louedec, Isabelle Bataille, Maguette Ba, Patrice Flaud, Sidi Mohamed Derkaoui, Didier Letourneur, Anne Meddahi-Pellé, Aicha Abed, Nabila Assoul |
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Rok vydání: | 2011 |
Předmět: |
Male
Materials science Biocompatibility Biomedical Engineering Biocompatible Materials Polysaccharide Hydrogel Polyethylene Glycol Dimethacrylate Prosthesis Implantation Biomaterials chemistry.chemical_compound Subcutaneous Tissue Tissue engineering Polysaccharides In vivo Elastic Modulus Materials Testing Animals Rats Wistar Glucans chemistry.chemical_classification Macrophages Metals and Alloys Biomaterial Dextrans Pullulan Rats Dextran chemistry Self-healing hydrogels Microscopy Electron Scanning Ceramics and Composites Biomedical engineering |
Zdroj: | Journal of Biomedical Materials Research Part A. :535-542 |
ISSN: | 1549-3296 |
DOI: | 10.1002/jbm.a.33007 |
Popis: | The implantation of a biomaterial for tissue engineering requires the presence of a suitable scaffold on which the tissue repair and regeneration will take place. Polymers have been frequently used for that purpose because they show similar properties to that of the natural extracellular matrix. Scaffold properties and biocompatibility are modulated by the composition of the polymers used. In this work four polysaccharide-based hydrogels (PSH) made of dextran and pullulan were synthesized. Their in vitro properties were determined and then tested in vivo in a rat model. As pullulan concentration increased in dextran hydrogels, the glass transition temperature and the maximum modulus decreased. In vitro degradation studies for 30 days demonstrated no significant degradation of PSH except for 100% pullulan hydrogel. In vivo tissue response evaluated 30 days after PSH subcutaneous implantation in rats indicated that all PSH were surrounded by a fibrous capsule. Adding pullulan to dextran induced an increased inflammatory reaction compared to PSH-D (100% dextran) or PSH-D75P25 (75% dextran). This in vitro and in vivo data can be used in the design of hydrogels appropriate for tissue engineering applications © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part A:, 2011. |
Databáze: | OpenAIRE |
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