期刊
JOURNAL OF BIOMATERIALS APPLICATIONS
卷 37, 期 5, 页码 814-828出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/08853282221121851
关键词
mineralized collagen; Mg-Ca alloy; osteogensis; angiogenesis
资金
- Key research project of Liaoning Provincial Department of Education [JYTZD2020004]
- Academic Research Projects of Beijing Union University [ZK70202006]
- Liaoning Provincial Natural Fund Subsidy Program [2019-MS-141]
The PMMA-nHAC/Mg-Ca composite materials prepared in this study have good biocompatibility, can promote the proliferation and adhesion of HUVECs, and enhance their migration motility and VEGF expression. In vivo experiments showed that coated samples have the highest bone formation.
Magnesium (Mg) and its alloys show high degrees of biocompatibility and biodegradability, used as biodegrad able materials in biomedical applications. In this study, Polymethyl methacrylate (PMMA) - mineralized collagen (nano-Hydroxyapatite/collagen; nHAC)/Mg-Ca composite materials were prepared, to study the angiogenesis ability of its composite materials on Human umbilical vein endothelial cells (HUVECs) and its osteogenesis effect in vivo. The results showed that the PMMA-nHAC reinforcement materials can promote the proliferation and adhesion in HUVECs of Mg matrix significantly, it can enhance the migration motility and VEGF expression of HUVECs. In vivo, Micro-CT examination showed that with coated samples presenting the highest bone formation. Histologically, the materials and their corrosion products caused no systematic or local cytotoxicological effects. Therefore, the Mg matrix composites prepared in the present study has good biocompatibility and PMMA-nHAC/Mg-Ca composite may be an ideal orthopedic material to improve the bone formation, and biodegradable magnesium based implants with bioactivity have potential applications in bone tissue.
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