中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (12): 2123-2130.doi: 10.3969/j.issn.2095-4344.2013.12.005

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

镁合金AZ31B材料表性与成骨细胞的黏附

张 涛1, 2, 3,武肖娜1, 4,尹庆水2, 3,夏 虹2, 3,张 余2, 3,李 梅2, 3,杨小明2, 3,蓝国波2, 3   

  1. 1南方医科大学,广东省广州市 510515
    2解放军广州军区广州总医院骨科,广东省广州市 510010
    3解放军全军热区组织救治与组织修复重点实验室,广东省广州市 510010
    4解放军广州军区广州总医院神经内科,广东省广州市 510010
  • 收稿日期:2012-12-19 修回日期:2013-01-30 出版日期:2013-03-19 发布日期:2013-03-19
  • 通讯作者: 尹庆水,教授,主任医师,解放军广州军区广州总医院骨科,广东省广州市 510010 gz_yqs@126.com
  • 作者简介:张涛☆,男,1982年生,安徽省固镇市人,汉族,南方医科大学在读博士,主治医师,主要从事关节外科及金属植入材料研究。 lupuszt@yahoo.com.cn

Surface properties of magnesium alloy AZ31B and its influence on osteoblast adhesion

Zhang Tao1, 2, 3, Wu Xiao-na1, 4, Yin Qing-shui2, 3, Xia Hong2, 3, Zhang Yu2, 3, Li Mei2, 3, Yang Xiao-ming2, 3, Lan Guo-bo2, 3   

  1. 1 Southern Medical University, Guangzhou 510515, Guangdong Province, China
    2 Department of Orthopedics, General Hospital of Guangzhou Military Region, Guangzhou 510010, Guangdong Province, China
    3 Key Laboratory of Trauma & Tissue Repair of Tropical Area, Guangzhou Military Region of Chinese PLA, Guangzhou 510010, Guangdong Province, China
    4 Department of Neurology, General Hospital of Guangzhou Military Region, Guangzhou 510010, Guangdong Province, China
  • Received:2012-12-19 Revised:2013-01-30 Online:2013-03-19 Published:2013-03-19
  • Contact: Yin Qing-shui, Professor, Chief physician, Department of Orthopedics, General Hospital of Guangzhou Military Region, Guangzhou 510010, Guangdong Province, China; Key Laboratory of Trauma & Tissue Repair of Tropical Area, Guangzhou Military Region of Chinese PLA, Guangzhou 510010, Guangdong Province, China gz_yqs@126.com
  • About author:Zhang Tao☆, Studying for doctorate, Attending physician, Southern Medical University, Guangzhou 510515, Guangdong Province, China; Department of Orthopedics, General Hospital of Guangzhou Military Region, Guangzhou 510010, Guangdong Province, China; Key Laboratory of Trauma & Tissue Repair of Tropical Area, Guangzhou Military Region of Chinese PLA, Guangzhou 510010, Guangdong Province, China lupuszt@yahoo.com.cn

摘要:

背景:镁合金对成骨细胞的生物学行为及早期黏附是否有影响尚不明确。
目的:分析镁合金AZ31B的表性,并评价其对成骨细胞黏附的影响。
方法:采用扫描电镜及能谱分析明确镁合金AZ31B的表面形态及元素组成。以蛋白吸附实验检测镁合金AZ31B与钛合金对蛋白的吸附能力。将镁合金AZ31B与钛合金分别与小鼠前成骨细胞MC3T3-El共培养于24孔板内,观察培养2,6,24 h的细胞黏附情况。
结果与结论:扫描电镜可见镁合金AZ31B表面较为粗糙,有利于细胞在其表面的黏附.能谱分析结果表明镁合金AZ31B的主要元素有镁、铝、锌,其中镁约占96%,铝约占3%,锌约占1%,另有一些其他元素,含量较少。镁合金AZ31B与钛合金的蛋白吸附率差异无显著性意义。培养2 h时,镁合金AZ31B与钛合金上的细胞黏附率差异无显著性意义;培养6,24 h,镁合金AZ31B上的细胞黏附率显著低于钛合金上的细胞黏附率(P < 0.01)。培养于镁合金表面的成骨细胞贴壁展开,形态不规则,大多呈梭形,有较多突起,部分细胞间突起相互连接。表明镁合金AZ31B具有良好的细胞黏附性,适合于成骨细胞的早期黏附。

关键词: 生物材料, 组织工程骨材料, 镁合金, 钛合金, 成骨细胞, 黏附, 表性, 国家自然科学基金, 生物材料图片文章

Abstract:

BACKGROUND: Whether the biological behavior and early adhesion of osteoblasts can be affected by magnesium alloy is still unknown.
OBJECTIVE: To study surface properties of magnesium alloy AZ31B and to investigate the effects on the adhesion of osteoblasts in vitro.
METHODS: Scanning electron microscope and energy dispersive spectrometer were used to study surface morphology and elemental composition of the magnesium alloy AZ31B. Protein absorption assay was applied to study the ability of magnesium alloy AZ31B and titanium alloy for protein adsorption. Then, mouse osteoblasts MC3T3-El were cocultured with magnesium alloy AZ31B or titanium alloy in 24-well plates to observe the cell adhesion at 2, 6 and 24 hours.
RESULTS AND CONCLUSION: The surface of AZ31B was rough which is beneficial for cell adhesion. Energy dispersive spectrometer results proved that the main elements of AZ31B were magnesium, aluminum, and zinc, among which, magnesium accounted for about 96%, aluminum for about 3%, and zinc for about 1%. There were also some other elements, but the content was little. Protein adsorption experiment results showed that AZ31B had good protein adsorption capacity. When the cells were cultured 2 hours, there was no significant difference between magnesium alloy AZ31B and titanium alloy in the rate of cell adhesion, but at 6 and 24 hour, the adhesion rate of magnesium alloy AZ31B was significantly lower than that of the titanium alloy (P < 0.01). The cells cultured on the surface of AZ31B expanded, and appeared with irregular shape, mostly fusiform, and more processes. Interconnected processes were seen among some cells. These show that the magnesium alloy AZ31B has a good capacity of cell adhesion, which is suitable for early osteoblast adhesion.

Key words: biomaterials, tissue-engineered bone materials, magnesium alloy, titanium alloy, osteoblasts, adhesion, surface properties, the National Natural Science Foundation of China, biomaterial photographs- containing paper

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