中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (34): 5443-5448.doi: 10.3969/j.issn.2095-4344.2017.34.006

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

碳/碳复合材料表面掺镁羟基磷灰石生物涂层的体外性能

倪昕晔1,熊信柏2,尤瑞金3,吴兴盛4,李万帅5
  

  1. 1南京医科大学附属常州第二人民医院,江苏省常州市  213003;2深圳大学材料学院,广东省深圳市  518060;3解放军第180医院,福建省泉州市  362000;4台湾新光吴火狮纪念医院,台北  11101;5常州杰傲医学检验所有限公司,江苏省常州市  213000
  • 收稿日期:2017-08-23 出版日期:2017-12-08 发布日期:2018-01-04
  • 通讯作者: 倪昕晔,南京医科大学附属常州第二人民医院,江苏省常州市 213003
  • 作者简介:倪昕晔,男,1975年生,江苏省启东市人,汉族,2012年南京航空航天大学毕业,博士,副研究员,主要从事生物材料研究。
  • 基金资助:
    国家自然科学基金资助(51672178);常州市社会发展项目(CJ20160029);江苏省自然科学基金(BK20151181);常州市卫生高层次人才资助项目(2016CZLJ004)

In vitro properties of magnesium doped hydroxyapatite coating on the surface of carbon/carbon composites

Ni Xin-ye1, Xiong Xin-bo2 , You Rui-jin3, Wu Xing-sheng4, Li Wan-shuai5
  

  1. 1Second People’s Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, Jiangsu Province, China; 2College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, China; 3the 180th Hospital of PLA, Quanzhou 362000, Fujian Province, China; 4Xinguang Wu Ho Su Memorial Hospital of Taiwan, Taibei 11101, China; 5GoPath Diagnostic Laboratory Co., Ltd., Changzhou 213000, Jiangsu Province, China
  • Received:2017-08-23 Online:2017-12-08 Published:2018-01-04
  • Contact: Ni Xin-ye, Second People’s Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, Jiangsu Province, China
  • About author:Ni Xin-ye, M.D., Associate researcher, Second People’s Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, Jiangsu Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 51672178; the Social Development Program of Changzhou City, No. CJ20160029; the Natural Science Foundation of Jiangsu Province, No. BK20151181; the High-Level Talent Fund of Changzhou Municipal Health Department, No. 2016CZLJ004

摘要:

文章快速阅读:

 

文题释义:
碳/碳复合材料:是碳纤维及其织物增强的碳基体复合材料,具有低密度(<2.0 g/cm3)、高强度、高比模量、高导热性、低膨胀系数、摩擦性能好,以及抗热冲击性能好、尺寸稳定性高等优点,是如今在1 650 ℃以上应用的少数备选材料,最高理论温度更高达2 600 ℃,因此被认为是最有发展前途的高温材料之一。
划痕实验:是一种常用的测量涂层结合强度和失效形式的实验方法,用一个针头逐渐增加载荷时在涂层表面连续划行,当涂层出现明显剥落或者涂层被完全划穿时所加载的载荷力就是涂层的结合力。
 
背景:前期研究利用电磁感应沉积法在碳/碳复合材料表面成功制备了含镁的羟基磷灰石涂层,分析了不同感应沉积时间对含镁羟基磷灰石涂层形貌的影响。
目的:进一步探讨碳/碳复合材料表面掺镁羟基磷灰石涂层的体外性能。
方法:在碳/碳复合材料表面分别制备羟基磷灰石涂层(对照组)与掺镁羟基磷灰石涂层(实验组)。①体外溶解性:将含两种涂层的碳/碳复合材料分别浸泡于DMEM低糖培养基中,检测浸泡前后的涂层表面形貌、离子浓度及涂层结合力;②细胞相容性:将含两种涂层的碳/碳复合材料分别与小鼠骨髓间充质干细胞共培养6 d,扫描电镜观察细胞增殖。
结果与结论:①浸泡1 d后,两组涂层表面已有沉积物形成,实验组涂层表面沉积物多于对照组;浸泡6 d后,实验组涂层表面被沉积物完全覆盖,对照组涂层表面沉积物还有部分空隙存在。浸泡6 d后,两种涂层表面沉积物含有钙和磷元素,且实验组涂层表面新生涂层的镁离子含量明显高于对照组;②浸泡6 d后,对照组涂层表面的钙、磷、镁离子浓度逐渐降低;实验组涂层表面的钙、磷离子浓度逐渐降低,镁离子浓度逐渐升高,且实验组涂层表面镁离子浓度高于对照组(P < 0.05);③实验组浸泡前及浸泡6 d后的涂层结合力均高于对照组(P < 0.05);④实验组表面骨髓间充质干细胞的增殖能力强于对照组;⑤结果表明,掺镁羟基磷灰石涂层具有较好的结合力与细胞相容性。

关键词: 生物材料, 材料相容性, 碳/碳复合材料, 羟基磷灰石, 涂层, 结合力, 国家自然科学基金

Abstract:

BACKGROUND: In the early study, hydroxyapatite coatings containing magnesium (Mg-HA) were successfully prepared on the carbon/carbon composite surface by electromagnetic induction deposition. The effects of different induction deposition time on the morphology of Mg-HA coating were analyzed.
OBJECTIVE: To investigate the in vitro properties of Mg-HA coating on the carbon/carbon composites.
METHODS: HA (control group) and Mg-HA (experimental group) coating were prepared on the surface of carbon/carbon composites. (1) In vitro solubility: Carbon/carbon composites with different coatings were immersed in low-glucose DMEM medium, and surface morphology, ion concentration, and coating adhesion were tested before and after immersion. (2) Cytocompatibility: Carbon/carbon composites with different coatings were respectively cultured with mouse bone marrow mesenchymal stem cells for 6 days, and cell proliferation was measured by scanning electron microscope.
RESULTS AND CONCLUSION: (1) One day after soaking, sediments formed on the coating surface in both groups, but there were more sediments in the experimental group than the control group. Six days after soaking, the sediments completely covered the coating surface in the experimental group, while there were still some gaps in the control group; Ca and P were both detected on the coating surface in the two groups, and the Mg content on the coating surface was obviously higher in the experimental group than the control group. (2) Six days after soaking, the concentrations of Ca, P and Mg in the control group continued to fall; in the experimental group, the concentrations of Ca and P were also reduced gradually, but the Mg concentration arose gradually. Moreover, the Mg concentration was significantly higher in the experimental group than the control group (P < 0.05). (3) The bonding strength of the coating in the experimental group was higher than that in the control group before and after 6 days soaking. In summary, the Mg-HA coating has better bonding strength and cell compatibility.

Key words: Hydroxyapatites, Magnesium, Tissue Engineering

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