中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (18): 2910-2914.doi: 10.3969/j.issn.2095-4344.0854

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

银离子注入氧化钛涂层抗金黄色葡萄球菌的体外效果评价

宋  辉,贺  韬,李  亘,董宇启,张  超   

  1. 上海交通大学医学院附属仁济医院创伤骨科,上海市 200127
  • 收稿日期:2018-01-25 出版日期:2018-06-28 发布日期:2018-06-28
  • 通讯作者: 张超,博士,副主任医师,上海交通大学医学院附属仁济医院创伤骨科,上海市 200127
  • 作者简介:宋辉,男,1989年生,河南省周口市人,汉族,上海交通大学医学院在读硕士,主要从事创伤矫形、植入物表面改性及骨整合评价方面的研究。
  • 基金资助:

    上海市卫生和计划生育委员会资助项目(201440268)

In vitro evaluation of silver ion implantation into titanium dioxide coating against Staphylococcus aureus

Song Hui, He Tao, Li Gen, Dong Yu-qi, Zhang Chao   

  1. Department of Traumatic Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
  • Received:2018-01-25 Online:2018-06-28 Published:2018-06-28
  • Contact: Zhang Chao, M.D., Associate chief physician, Department of Traumatic Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
  • About author:Song Hui, Master candidate, Department of Traumatic Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
  • Supported by:

    the Funded Project of Shanghai Municipal Health and Family Planning Commission, No. 201440268

摘要:

文章快速阅读:

 

文题释义:
离子注入:是近些年出现的一种材料表面改性技术。在真空环境中,将所需注入的元素激发所产生的离子加速后高速射向材料表面,通过与材料表面的原子碰撞,在材料表面形成一层富集注入元素的改性层(一般在   1 μm以内)。该改性层赋予了材料新的、与注入元素相关的功能。
表面改性:就是指在保持材料或制品原性能的前提下,赋予其表面新的性能,如抗菌性、亲水性、生物相容性、抗静电性能、染色性能等。表面改性的方法有很多,大体上可以归结为表面化学反应法、表面接枝法、表面复合化法等。
 
 
背景:制备缓释、长期释放的银离子抗菌涂层,仍然是材料表面改性抗菌的重要课题之一。
目的:评价银离子注入氧化钛涂层后体外抗金黄色葡萄球菌的特点及其效果。
方法:对照组为纯钛组,实验组分为3组,为氧化钛涂层组、氧化钛涂层+低银离子组(30 min)和氧化钛涂层+高银离子组(60 min);扫描电镜观察处理后材料的特征,运用细菌滴入法、抑菌环实验和菌液生长曲线法来评价抗菌效果。

结果与结论:通过银离子注入技术,可以将银离子加载至氧化钛涂层表面;体外实验证实银离子注入后的材料具有明显的抗菌性,且随着注入时间的延长,材料表面银离子的数量增加,抗菌性明显提高;银离子注入技术用于制备无机抗菌材料经过体外实验评价具有抗菌能力强、抗菌持久等特点。

ORCID: 0000-0001-7346-7558(张超)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 银离子注入, 表面改性, 氧化钛涂层, 抗菌剂, 金黄色葡萄球菌, 生长曲线, 抑菌环, 体外实验, 生物材料

Abstract:

BACKGROUND: It is a challenge to seek for ideal anti-bacterial surface modification by which silver ions can have sustained and durable release.

OBJECTIVE: To investigate the in vitro characteristics and effect of titanium dioxide coating with silver ion injection against Staphylococcus aureus.

METHODS: There were four groups in the study: control group (pure titanium), titanium oxide coating group, low silver ion group (titanium oxide coating+30 minutes injection of silver ions), and high silver ion group (titanium oxide coating+60 minutes injection of silver ions). Characteristics of the implanted material in each group were observed using scanning electron microscope. Antibacterial efficacy for Staphylococcus aureus was assessed through bacterial instillation method, antibacterial ring test, and microbial growth curve.

RESULTS AND CONCLUSION: Silver ions could be loaded onto the surface of the titanium dioxide coating through the silver ion implantation. Moreover, the number of silver ions on the coating surface and the antibacterial ability of the modified coating were both increased with the extension of injection time. Therefore, the silver ion implantation technology is beneficial to prepare inorganic antibacterial materials with strong and long-lasting antibacterial ability.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Amino Acids, Fertilization in Vitro, Chromatography, Liquid, Quality Control, Tissue Engineering

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