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Updated: Feb 9, 2026

Use of Human Perivascular Stem Cells for Bone Regeneration
Published on: May 25, 2012
Skull Bone Regeneration Using Chitosan⁻Siloxane Porous Hybrids-Long-Term Implantation
Yuki Shirosaki1, Motomasa Furuse2, Takuji Asano3
1Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan. yukis@che.kyutech.ac.jp.
Abstract:
Burr holes in craniotomy are not self-repairing bone defects. To regenerate new bone at the sites of these defects, a good scaffold is required. Biodegradable hybrids including silica or siloxane networks have been investigated as bone tissue scaffolds. This study examined skull bone regeneration using chitosan-siloxane hybrids after long-term implantation (two and three years). After implantation of the hybrids, the surrounding cells migrated and formed fibrous tissues and blood vessels. Then, bone formation occurred from the surrounding blood vessels. Addition of calcium ions and coating with hydroxyapatite improved bone regeneration. Finally, the regenerated tissue area became smaller than the initial hole, and some areas changed to completed bone tissues.
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