Paper Title:
Osteogenesis of Porous Bioceramics Scaffolds Consisted of Hydroxyapatite Spherules after Implanted in Different Non-Osseous Sites
  Abstract

The interconnected porous scaffolds are crucial to support the attachment, differentiation, proliferation of cells so to construct 3-dimensional (3-D) tissues. Up to now, there are several approaches to prepare porous scaffolds. In our experiments, we designed a novel porous bioceramic scaffold, called the hydroxyapatite (HA) spherule scaffold, by accumulating HA spherules in an HA porous tube to establish an interconnected porous structure which can be reconstructed exactly. The porous HA tube was manufactured by polymer sponge template while HA spherules were prepared by sol-gel process. In the animal experiment, the HA spherule scaffolds were implanted at 2 different non-osseous sites such as muscle and abdominal cavity in dogs. The new bone growth was investigated after six months. The preliminary results demonstrated that the proliferation of osteocytes on the scaffolds in muscle was obviously better than in abdominal cavity, and about ten times more blood vessels (BVs) were appeared in the former site than those in the latter site. This study presents an alternative way to reveal the relationship between the porous structure of scaffolds and ectopia bone growth because the interconnection and porosity can be controlled easily by the size and porosity of HA spherules.

  Info
Periodical
Materials Science Forum (Volumes 610-613)
Main Theme
Edited by
Zhongwei Gu, Yafang Han, Fusheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou
Pages
1335-1338
DOI
10.4028/www.scientific.net/MSF.610-613.1335
Citation
Y. Yuan, P. Huang, Q. Peng, C. Zhang, J. Weng, "Osteogenesis of Porous Bioceramics Scaffolds Consisted of Hydroxyapatite Spherules after Implanted in Different Non-Osseous Sites", Materials Science Forum, Vols. 610-613, pp. 1335-1338, 2009
Online since
January 2009
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$32.00
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