Biocompatibility of calcium phosphate cement/fibrin glue in filling radius defects

doi:10.3969/j.issn.2095-4344.2016.52.011

Abstract

Abstract:

BACKGROUND: The chemical compositions and structure of calcium phosphate bone cement are similar to those of human bone, which can fill the bone collapse caused by fracture and induce osteogenesis, but its degradation rate is slow.
OBJECTIVE: To evaluate the biocompatibility of the calcium phosphate cement/fibrin glue and the feasibility of repairing radius defects.
METHODS: In vitro cytotoxicity experiment: Mouse fibroblasts were cultured in the calcium phosphate bone cement/fibrin glue extracts, phenol solution, and RPMI 1640 culture medium containing 10% fetal bovine serum, respectively, to detect the cytotoxicity grade. Hemocompatibility experiment: Calcium phosphate bone cement/fibrin glue extracts, normal saline and distilled water were respectively added into the rabbit anticoagulation, to detect the hemolytic rate. Forty-five New Zealand white rabbits were enrolled and modeled into bilateral radius defects, followed by randomly allotted into three groups: blank control group without any intervention, experimental and control groups were given the implantation with calcium phosphate bone cement/fibrin glue and autologous radius, respectively. X-ray, histology, bone mineral density and biomechanical test were performed at postoperative 4, 8 and 16 weeks.
RESULTS AND CONCLUSION: The toxicity grade of the calcium phosphate cement/fibrin glue was 0 to 1. The hemolytic rate of the calcium phosphate cement/fibrin glue was 3.15%. At 16 weeks postoperatively, X-ray showed that in the experimental and control groups, the fracture line disappeared completely, pulp cavity was recanalized, and in plastic completely. Histology showed that the reconstructed bone trabecular was obvious, plate layer of bone was mature, and medullary cavity recanalization appeared in the control group; there were a large number of new grid-shaped woven bone tissues growing into the material in the experimental group, with overt degradation, and degradation rate was in parallel to bone ingrowth. The bone density, the maximum load, maximum stress and failure energy in the experimental and control groups were significantly higher than those in the blank control group (P < 0.05), and all above indicators showed no significant differences between the experimental and control groups. These results manifest that the calcium phosphate bone cement/fiber protein glue composite material holding a good biocompatibility can promote bone tissue regeneration for bone defect repair, achieving similar curative effect with autologous bone transplantation.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Calcium Phosphates, Fibrin Tissue Adhesive, Tissue Engineering

CLC Number:

R318

Huang Tian1, Zheng Nan-sheng2, Zhang Yu-zhuan1, Wu Yong-le1, Wang Gang1.

Biocompatibility of calcium phosphate cement/fibrin glue in filling radius defects

[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(52): 7829-7835.

Figures/Tables 8

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