Study on the anticorrosion, biocompatibility, and osteoinductivity of tantalum decorated with tantalum oxide nanotube array films.
With its excellent anticorrosion and biocompatibility, tantalum, as a promising endosseous implant or implant coating, is attracting more and more attention. For improving physicochemical property and biocompatibility, the research of tantalum surface modification has increased. Tantalum oxide (Ta(2)O(5)) nanotube films can be produced on tantalum by controlling the conditions of anodization and annealing. The objective of our present study was to investigate the influence of Ta(2)O(5) nanotube films on pure tantalum properties related with anticorrosion, protein adsorption, and biological function of rabbit bone mesenchymal stem cells (rBMSCs). The polarization curve was measured, the adsorption of bovine serum albumin and fibronectin to Ta(2)O(5) nanotubes was detected, and the morphology and actin cytoskeletons of the rBMSCs were observed via fluorescence microscopy, and the adhesion and proliferation of the rBMSCs, as well as the osteogenic differentiation potential on tantalum specimens, were examined quantificationally by MTT and real-time PCR technology. The results showed that Ta(2)O(5) nanotube films have high anticorrosion capability and can increase the protein adsorption to tantalum and promote the adhesion, proliferation, and differentiation of rBMSCs, as well as the mRNA expression of osteogenic gene such as Osterix, ALP, Collagen-I, and Osteocalcin on tantalum. This study suggests that Ta(2)O(5) nanotube films can improve the anticorrosion, biocompatibility, and osteoinduction of pure tantalum, which provides the theoretical elaboration for development of tantalum endosseous implant or implant coating to a certain extent.
Beijing Key Laboratory for Tooth Regeneration and Function Reconstruction of Oral Tissues, School of Stomatology, Capital Medical University, Tian Tan Xi Li No. 4, Beijing 100050, China.
Na
N
Wang
Hongyi
H
Li
Jinshu
J
Wang
Su
S
Chen
Yuanping
Y
Ma
Zhenting
Z
Zhang
D000327:Adsorption; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry* / Q000633:toxicity; D002417:Cattle; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D005353:Fibronectins / Q000737:chemistry / Q000378:metabolism; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism; D008856:Microscopy, Fluorescence; D043942:Nanotubes / Q000737:chemistry* / Q000633:toxicity; D010087:Oxides / Q000737:chemistry*; D011817:Rabbits; D012710:Serum Albumin, Bovine / Q000737:chemistry / Q000378:metabolism; D013499:Surface Properties; D013635:Tantalum / Q000737:chemistry*
D001672:Biocompatible Materials; D005353:Fibronectins; D010087:Oxides; D012710:Serum Albumin, Bovine; D013635:Tantalum; C078151:tantalum oxide