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Zn 沉积 TiO2 纳米管表面的表面特性、电化学性能和体外生物性能。

Surface characterization, electrochemical properties and in vitro biological properties of Zn-deposited TiO nanotube surfaces.

机构信息

Industrial Engineering, Faculty of Engineering, Giresun University, Merkez, 28200, Giresun, Turkey.

Mechanical Engineering, Giresun University, 28200, Giresun, Turkey.

出版信息

Sci Rep. 2023 Jul 14;13(1):11423. doi: 10.1038/s41598-023-38733-2.

Abstract

In this work, to improve antibacterial, biocompatible and bioactive properties of commercial pure titanium (cp-Ti) for implant applications, the Zn-deposited nanotube surfaces were fabricated on cp-Ti by using combined anodic oxidation (AO) and physical vapor deposition (PVD-TE) methods. Homogenous elemental distributions were observed through all surfaces. Moreover, Zn-deposited surfaces exhibited hydrophobic character while bare Ti surfaces were hydrophilic. Due to the biodegradable behavior of Zn on the nanotube surface, Zn-deposited nanotube surfaces showed higher corrosion current density than bare cp-Ti surface in SBF conditions as expected. In vitro biological properties such as cell viability, ALP activity, protein adsorption, hemolytic activity and antibacterial activity for Gram-positive and Gram-negative bacteria of all surfaces were investigated in detail. Cell viability, ALP activity and antibacterial properties of Zn-deposited nanotube surfaces were significantly improved with respect to bare cp-Ti. Moreover, hemolytic activity and protein adsorption of Zn-deposited nanotube surfaces were decreased. According to these results; a bioactive, biocompatible and antibacterial Zn-deposited nanotube surfaces produced on cp-Ti by using combined AO and PVD techniques can have potential for orthopedic and dental implant applications.

摘要

在这项工作中,为了提高商业纯钛(cp-Ti)在植入物应用中的抗菌、生物相容性和生物活性,通过结合阳极氧化(AO)和物理气相沉积(PVD-TE)方法在 cp-Ti 上制备了 Zn 沉积纳米管表面。通过所有表面都观察到均匀的元素分布。此外,Zn 沉积表面表现出疏水性,而裸露的 Ti 表面表现出亲水性。由于 Zn 在纳米管表面上的生物降解行为,Zn 沉积纳米管表面在 SBF 条件下表现出比裸露的 cp-Ti 表面更高的腐蚀电流密度,这是预期的。详细研究了所有表面的体外生物性能,如细胞活力、ALP 活性、蛋白质吸附、溶血活性和革兰氏阳性菌和革兰氏阴性菌的抗菌活性。与裸露的 cp-Ti 相比,Zn 沉积纳米管表面的细胞活力、ALP 活性和抗菌性能显著提高。此外,Zn 沉积纳米管表面的溶血活性和蛋白质吸附减少。根据这些结果;通过结合 AO 和 PVD 技术在 cp-Ti 上制备的具有生物活性、生物相容性和抗菌性的 Zn 沉积纳米管表面可用于骨科和牙科植入物应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3409/10349054/7c4474d3ef1c/41598_2023_38733_Fig1_HTML.jpg

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