期刊
ACS OMEGA
卷 6, 期 38, 页码 24575-24584出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c03169
关键词
-
资金
- National Natural Science Foundation of China [52001076]
- Natural Science Foundation of Guangdong Province, China [2020A1515011447]
- Scientific and Technological Projects of Guangzhou, China [202002030283, 202102020431]
- Medical Science Foundation of Guangdong Province, China [A2020005]
The study successfully prepared a pure Mg-Al LDH film and demonstrated its potential in enhancing the corrosion resistance and biocompatibility of AZ31 materials. The LDH-coated sample not only promotes bone cell activity and bone regeneration, but also facilitates the functionality of vascular endothelial cells and angiogenesis.
Mg alloys are promising biodegradable orthopedic implants in the future. However, poor corrosion resistance and biocompatibility limit their wide applications. In this study, a pure Mg-Al layered double hydroxide (Mg-Al LDH) film on AZ31 was prepared through combining hydrofluoric acid pretreatment and hydrothermal treatment. Electrochemical analysis and the immersion test suggested that the as-prepared Mg-Al LDH-coated sample exhibited significantly enhanced corrosion resistance. The in vitro cell culture revealed that the Mg-Al LDH film was favorable for the alkaline phosphatase activity, collagen secretion, and osteogenesis-related gene expression of MC3T3-E1. Furthermore, the LDH-coated sample was beneficial for the migration, vascular endothelial growth factor secretion, and angiogenesis-related gene expression of human umbilical vein endothelial cells. The subcutaneous implantation test demonstrated that the Mg-Al LDH film could protect the substrate from corrosion and induce milder inflammation. The femur implantation demonstrated that the Mg-Al LDH sample showed better bone regeneration and osseointegration than bare AZ31. In summary, the as-prepared pure Mg-Al LDH film is able to enhance the in vitro and in vivo performances of AZ31, indicating a promising application in the orthopedic field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据