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在酒石酸钠电解液中制备的阳极氧化TiNbSn合金的抗菌活性

Antibacterial Activity of an Anodized TiNbSn Alloy Prepared in Sodium Tartrate Electrolyte.

作者信息

Kurishima Hiroaki, Mori Yu, Ishii Keiko, Inoue Hiroyuki, Mokudai Takayuki, Fujimori Satoko, Itoi Eiji, Hanada Shuji, Masahashi Naoya, Aizawa Toshimi

机构信息

Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.

Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan.

出版信息

Front Bioeng Biotechnol. 2022 Apr 11;10:883335. doi: 10.3389/fbioe.2022.883335. eCollection 2022.

DOI:10.3389/fbioe.2022.883335
PMID:35480976
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9035674/
Abstract

In this study, we anodized a TiNbSn alloy with low Young's modulus in an electrolyte of sodium tartrate with and without hydrogen peroxide (HO). The photo-induced characteristics of the anodized alloy were analyzed for crystallinity and electrochemical conditions with comparisons to the effect with the addition of HO. The antibacterial activity was evaluated using methicillin-resistant and other pathogenic bacteria according to ISO 27447, and time decay antibacterial tests were also conducted. The anodized oxide had a porous microstructure with anatase- and rutile-structured titanium dioxide (TiO). In contrast, the peaks of rutile-structured TiO were accelerated in the anodized TiNbSn alloy with HO. The formation of hydroxyl radicals and methylene blue breaching performance under ultraviolet irradiation was confirmed in the anodic oxide on TiNbSn alloy with and without HO. The anodic oxide on TiNbSn alloy had a robust antibacterial activity, and no significant difference was detected with or without HO. We conclude that anodized TiNbSn alloy with sodium tartrate electrolyte may be a functional biomaterial with a low Young's modulus and an antibacterial function.

摘要

在本研究中，我们在含有和不含过氧化氢（HO）的酒石酸钠电解液中对具有低杨氏模量的TiNbSn合金进行阳极氧化处理。分析了阳极氧化合金的光诱导特性，包括结晶度和电化学条件，并与添加HO后的效果进行比较。根据ISO 27447标准，使用耐甲氧西林菌和其他病原菌评估抗菌活性，并进行了时间衰减抗菌试验。阳极氧化膜具有由锐钛矿型和金红石型二氧化钛（TiO）构成的多孔微观结构。相比之下，在添加HO的阳极氧化TiNbSn合金中，金红石型TiO的峰加速出现。在含和不含HO的TiNbSn合金阳极氧化膜中，均证实了在紫外线照射下羟基自由基的形成和亚甲基蓝的突破性能。TiNbSn合金的阳极氧化膜具有强大的抗菌活性，添加HO与否未检测到显著差异。我们得出结论，采用酒石酸钠电解液进行阳极氧化处理的TiNbSn合金可能是一种具有低杨氏模量和抗菌功能的功能性生物材料。

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