• 1. Shaanxi University of Traditional Chinese Medicine, Xianyang Shaanxi, 712046, P.R.China;
  • 2. Department of Spine Surgery, Honghui Hospital Affiliated to Medical School of Xi’an Jiaotong University, Xi’an Shaanxi, 710054, P.R.China;
HAO Dingjun, Email: haodingjun@163.com
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Objective After using hyaluronic acid (HA) to modify curcumin (CUR), the effects of calcium phosphate cement (CPC) combined with HA/CUR on the proliferation and osteogenesis of osteoblasts were investigated.Methods First, HA and CUR were esterified and covalently combined to prepare HA/CUR, and the characteristics were observed and the infrared spectrum was tested. Then, HA, CUR, and HA/CUR were mixed with CPC according to 5% (W/W) to prepare HA-CPC, CUR-CPC, and HA/CUR-CPC, respectively. Setting time detection, scanning electron microscope observation, injectable performance test, and compression strength test were conducted; and the CPC was used as a control. Osteoblasts were isolated and cultured from the skull of newborn Sprague Dawley rats, and the 2nd generation cells were cultured with the 4 types of bone cement, respectively. The effects of HA/CUR-CPC on the proliferation and osteogenesis of osteoblasts were estimated by the scanning electron microscopy observation, live/dead cell fluorescence staining, cell counting, osteopontin (OPN) immunofluorescence staining, alkaline phosphatase (ALP) staining,and alizarin red staining.Results Infrared spectroscopy test showed that HA and CUR successfully covalently combined. The HA/CUR-CPC group had no significant difference in initial setting time, final setting time, injectable rate, and compressive strength when compared with the other 3 groups (P>0.05); scanning electron microscope observation showed that HA/CUR was scattered on CPC surface. After co-culture of bone cement and osteoblasts, scanning electron microscopy observation showed that the osteoblasts, which had normal morphology and the growth characteristics of osteoblasts, clustered and adhered to HA/CUR-CPC. There was no significant difference in cell survival rate between HA/CUR-CPC group and other groups (P>0.05), and the number of cells significantly increased (P<0.05); the degrees of OPN immunofluorescence staining, ALP staining, and alizarin red staining were stronger than other groups.Conclusion HA/CUR-CPC has good biocompatibility and mechanical properties, which can promote the proliferation and osteogenesis of osteoblasts.

Citation: ZHANG Ying, JIA Shuaijun, TIAN Fang, GAO Xinlin, WANG Zhiyuan, ZHU Lei, HAO Dingjun. Effects of calcium phosphate cement combined with hyaluronic acid/curcumin on the proliferation and osteogenesis of osteoblasts. Chinese Journal of Reparative and Reconstructive Surgery, 2021, 35(1): 104-110. doi: 10.7507/1002-1892.202007088 Copy

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