AI Article Synopsis
- The study focused on synthesizing gelatin-hydroxyapatite composite microspheres (21% gelatin, 79% hydroxyapatite) using a wet-chemical process and analyzing their properties through various material characterization techniques.
- The resulting microspheres exhibited a unique nano-rod structure and were found to be non-toxic, promoting the growth and differentiation of osteoblast-like cells in cultures.
- In a rat model for bone repair, the G-HA scaffolds demonstrated superior bone regeneration capabilities compared to fibrin glue and Osteoset® Bone Graft Substitute after four weeks post-implantation, highlighted by new bone formation and increased vascularization.
Article Abstract
Gelatin-hydroxyapatite composite microspheres composed of 21% gelatin (G) and 79% hydroxyapatite (HA) with uniform morphology and controllable size were synthesized from a mixed solution of Ca(NO3)2, NH4H2PO4 and gelatin by a wet-chemical method. Material analyses such as X-ray diffraction (XRD), scanning/transmission electron microscopy examination (SEM/TEM) and inductively coupled plasma-mass spectroscopy (ICP-MS) were used to characterize G-HA microspheres by analyzing their crystalline phase, microstructure, morphology and composition. HA crystals precipitate along G fibers to form nano-rods with diameters of 6-10nm and tangle into porous microspheres after blending. The cell culture indicates that G-HA composite microspheres without any toxicity could enhance the proliferation and differentiation of osteoblast-like cells. In a rat calvarial defect model, G-HA bioactive scaffolds were compared with fibrin glue (F) and Osteoset® Bone Graft Substitute (OS) for their capacity of regenerating bone. Four weeks post-implantation, new bone, mineralization, and expanded blood vessel area were found in G-HA scaffolds, indicating greater osteoconductivity and bioactivity than F and OS.
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| http://dx.doi.org/10.1016/j.msec.2015.07.047 | DOI Listing |
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