中国组织工程研究

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

微弧氧化镁合金对巨噬细胞肿瘤坏死因子和白细胞介素6的影响

庄  岩1, 吴  锋2,孟改利2. 3,李晓会2   

  1. 1西安交通大学红十字会医院,陕西省西安市  710054
    2西安交通大学医学院,陕西省西安市  710061
    3陕西省妇幼保健医院,陕西省西安市  710003
  • 收稿日期:2012-09-29 修回日期:2012-10-29 出版日期:2013-05-21 发布日期:2013-05-21
  • 通讯作者: 吴锋,博士,高级实验师,西安交通大学医学院,陕西省西安市 710061 wufeng@mail.xjtu.edu.cn
  • 作者简介:庄岩,男,1967年生,福建省惠安市人,汉族,1990年西安医科大学毕业,主任医师,主要从事创伤外科及内固定材料的研究。

Magnesium alloy modified by micro-arc oxidation can influence tumor necrosis factor-alpha and interleukin-6 production in macrophages

Zhuang Yan1, Wu Feng2, Meng Gai-li2, 3, Li Xiao-hui2   

  1. 1 Red-Cross Hospital of Xi’an Jiaotong University, Xi’an  710054, Shaanxi Province, China
    2 Medical School of Xi’an Jiaotong University, Xi’an  710061, Shaanxi Province, China
    3 Shanxi Provincial Maternal and Child Health Care Hospital, Xi’an  710003, Shaanxi Province, China
  • Received:2012-09-29 Revised:2012-10-29 Online:2013-05-21 Published:2013-05-21
  • Contact: Wu Feng, M.D., Experimentalist, Medical School of Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China wufeng@mail.xjtu.edu.cn
  • About author:Zhuang Yan, Chief physician, Red-Cross Hospital of Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, China

摘要:

背景:微弧氧化处理可提高镁合金的抗腐蚀性能,延缓其降解速率。
目的:观察微弧氧化处理镁合金对小鼠巨噬细胞肿瘤坏死因子α和白细胞介素6的影响。
方法:在小鼠RAW264.7细胞中分别加入镁合金浸提液(对照组)、微弧氧化处理镁合金浸提液(实验组)及RPMI-1640(空白对照组),1 h后加入脂多糖,作用24 h后,收集细胞上清液,检测肿瘤坏死因子α和白细胞介素6水平,MTT法测定脂多糖刺激前后的RAW264.7细胞活性。
结果与结论:①脂多糖刺激前的RAW264.7细胞活性:对照组>实验组>空白对照组(P均< 0.05)。②脂多糖刺激后的RAW264.7细胞活性:实验组与对照组高于刺激前,但差异无显著性意义;空白对照组明显高于刺激前(P < 0.01)。3组间RAW264.7细胞活性差异无显著性意义(P > 0.05)。③脂多糖刺激后RAW264.7细胞白细胞介素6与肿瘤坏死因子α的表达量:对照组白细胞介素6表达量明显高于实验组和空白对照组(P < 0.05);3组肿瘤坏死因子α表达量两两之间比较差异无显著性意义(P > 0.05)。表明微弧氧化处理镁合金对小鼠巨噬细胞活性无明显影响,同时降低了炎性反应。

关键词: 生物材料, 组织工程口腔材料, 镁合金, 微弧处理, 巨噬细胞, 肿瘤坏死因子, 白细胞介素6, 脂多糖, 细胞活性

Abstract:

BACKGROUND: Micro-arc oxidation treatment can improve the corrosion resistance of the magnesium alloy and delay the degradation rate.
OBJECTIVE: To investigate the effects of magnesium alloy with micro-arc oxidation treatment on tumor necrosis factor-alpha and interleukin-6 expression in mouse macrophage RAW264.7 cells.
METHODS: Extracts of magnesium alloy, magnesium alloy with micro-arc oxidation treatment or RPMI-1640 medium were added to RAW24.7 cells at 1 hour prior to lipopolysaccharide treatment for 24 hours. Then culture supernatants were collected for measuring the concentrations of tumor necrosis factor-alpha and interleukin-6, and cell proliferation were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide method.
RESULTS AND CONCLUSION: Lipopolysaccharide could significantly increase RAW264.7 cell viability. However, there was no significant difference in lipopolysaccharide-induced RAW264.7 cell viability among the three groups (P > 0.05). But the cell viability in the blank control group was significantly increased after lipopolysaccharide treatment (P < 0.01). The highest viability of RAW264.7 cells without lipopolysaccharide stimulation was determined by magnesium alloy treatment, followed by magnesium alloy modified by micro-arc oxidation treatment and RPMI-1640 medium treatment (P < 0.05). Interleukin-6 level of lipopolysaccharide-induced RAW264.7 cells with magnesium alloy treatment appeared to be increased compared to the other two groups (P < 0.05). Unlike interleukin-6 response in lipopolysaccharide-induced RAW264.7 cells, there was no significant difference in tumor necrosis factor-alpha levels among these three groups (P > 0.05). These data suggested magnesium alloy with micro-arc oxidation treatment has no significant effect on RAW264.7 cell viability, and at the same time, reduces the inflammatory reaction.

Key words: biomaterials, tissue-engineered oral materials, magnesium alloy, micro-arc oxidation, macrophages, tumor necrosis factor-alpha, interleukin-6, lipopolysaccharide, cell viability

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