摘要
Abstract
BACKGROUND:The biological substances fixed onto the implant surface, including specific proteins, enzymes, polypeptides, could promote the proliferation and differentiation of osteogenic cells in order to achieve a good osteogenic effect. <br> OBJECTIVE:To introduce the biological characteristics of the arginine-glycine-aspartic acid (RGD) peptides, cellbiological behavior and implant osseointegration in osteoporosis. <br> METHODS:Authors retrieved the relevant articles in PubMed database (January 1984 to January 2013), Wanfang database (January 2002 to December 2012) and CHKD database (January 2002 to December 2012) using the key words“RGD peptides, osteoporosis, bone marrow mesenchymal stem cells, osseointegration, osteoblast, induced differentiation”. Papers were included concerning the biological characteristics of RGD peptides, the biological behavior of cells and the bone-implant integration in osteoporosis. <br> RESULTS AND CONCLUSION:Osseointegration on the surface between implant and bone tissue can be further improved by grafting biological y active substance. Bionics modification, to simulate the extracellular matrix environment in vivo, can promote celladhesion and growth, which is an effective way to improve osseointegration and is also an important direction of research in the field of tissue engineering recently. The future research is focused on designing specific and efficient polypeptides and simple and effective fixation methods.关键词
生物材料/生物材料综述/精氨酸-甘氨酸-天冬氨酸多肽/种植体/骨质疏松/骨髓间充质干细胞/骨整合/成骨细胞/诱导分化Key words
biocompatible materials/tissue engineering/osteoporosis/osseointegration分类
医药卫生
