Preparation and cell compatibility of malleable demineralized bone matrix/hyaluronic acid putty / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
; (53): 8182-8188, 2013.
Article
Dans Zh
| WPRIM
| ID: wpr-441687
Responsable en Bibliothèque :
WPRO
ABSTRACT
BACKGROUND:It is important to prepare a mal eable putty to repair irregular bone defects because the preformed bone substitute material cannot suit to bone defects. OBJECTIVE:To prepare mal eable demineralized bone matrix/hyaluronic acid putty and to screen out the optimal composite ratio, as wel as to evaluate its cellcompatibility. METHODS:Demineralized bone matrix was prepared from the cortical bone of healthy donors. The hyaluronic acid was dissolved at concentrations of 0.75%, 1.5%, 3%, 4.5%, and the viscosity of them was measured. Then 450 mg demineralized bone matrix was compounded with 1 mL hyaluronic acid solution to prepare the demineralized bone matrix/hyaluronic acid putty, and the optimal ratio of demineralized bone matrix/hyaluronic acid was screened by the disintegrated time of the putty at 37 ℃. L-929 mouse fibroblasts were cultured in the leaching liquor of demineralized bone matrix/hyaluronic acid, and the cytotoxicity was tested by cellcount kit-8 assay at days 1, 4 and 7. RESULTS AND CONCLUSION:With the increase of hyaluronic acid concentration, the viscosity of hyaluronic acid solution was increased;the demineralized bone matrix/hyaluronic acid putty was strengthened and the disintegrated time was prolonged gradual y. When the ratio of demineralized bone matrix/hyaluronic acid was 15/1, demineralized bone matrix/hyaluronic acid was molded easily, and the disintegrated time was 8 hours in 7 ℃ PBS. The results of cytotoxicity showed that cellproliferation rates were 93.72%, 101.65%and 97.68%at days 1, 4 and 7 respectively, while the cytotoxicity was in grade 0 or 1. These findings indicate that demineralized bone matrix/hyaluronic acid putty at a compound ratio of 15:1 can be molded easily and difficult to disintegrate, with low cytotoxicity.
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WPRIM
langue:
Zh
Texte intégral:
Chinese Journal of Tissue Engineering Research
Année:
2013
Type:
Article