[掺镁纳米多孔钛涂层的生物学特性和成骨分化]。

Q4 Medicine 上海口腔医学 Pub Date : 2024-02-01
Shan Zhao, Lin Zhang, Sheng-Nan Li, Nan Kang, Jian Meng, Xiao-Dong Li
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引用次数: 0

摘要

目的:通过微弧氧化(MAO)将生物活性镁离子成功地加入到纳米多孔钛基涂层中,并探讨其物理性质和成骨作用:方法:通过改变MAO电解液的成分和控制镁在多孔钛涂层中的掺杂量,制备了不含镁和含镁的多孔钛涂层(MAO,MAO-mg)。样品用扫描电子显微镜(SEM)、粗糙度、接触角和能量色散 X 射线光谱仪(EDS)进行了表征。电感耦合等离子体/光发射光谱(ICP-OES)测定了掺镁纳米多孔钛涂层的 Mg2+ 释放能力。通过活/死双重染色、CCK-8检测材料的增殖-毒性以及用FITC-类花青素染色β-肌动蛋白,测定了细胞骨架的结构。茜素红(ARS)、碱性磷酸酶(ALP)染色和实时聚合酶链反应(qRT-PCR)测定了涂层对体外成骨分化的影响。统计分析采用 SPSS 25.0 软件包:含镁离子的 MAO 电解质没有改变多孔钛涂层的表面特性。各组 MAO 制备的微孔结构相似(P>0.05)。MAO处理组(MAO、MAO-mg)的表面粗糙度和接触角无明显差异(P>0.05),但明显高于Ti组(P<0.05)。随着细胞培养时间的延长,MAO-mg 组促进细胞增殖(P<0.05)。MAO-mg组的ALP和ARS染色明显高于其他组。MAO-mg组Runx2 mRNA(P<0.05)、ALP(P<0.05)和骨钙素OCN(P<0.05)的表达均明显高于Ti组和MAO组:结论:MAO成功制备了含镁纳米多孔钛涂层,并在促进成骨分化方面发挥了重要作用。
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[Biological characteristics and osteogenic differentiation of magnesium-doped nanoporous titanium coating].

Purpose: Bioactive magnesium ions were successfully incorporated into the nanoporous titanium base coating by micro-arc oxidation(MAO), and its physical properties and osteogenic effects were explored.

Methods: Non-magnesium-containing and magnesium-containing titanium porous titanium coatings(MAO, MAO-mg) were prepared by changing the composition of MAO electrolyte and controlling the doping of magnesium in porous titanium coatings. The samples were characterized by scanning electron microscope (SEM), roughness, contact angle and energy dispersive X-ray spectrometer (EDS). Mg2+ release ability of magnesium-doped nanoporous titanium coatings was determined by inductively coupled plasma/optical emission spectrometer(ICP-OES). The structure of the cytoskeleton was determined by live/dead double staining, CCK-8 detection of material proliferation-toxicity, and staining of β-actin using FITC-phalloidin. The effects of the coating on osteogenic differentiation in vitro were determined by alizarin red (ARS), alkaline phosphatase (ALP) staining and real-time polymerase chain reaction (qRT-PCR). SPSS 25.0 software package was used for statistical analysis.

Results: The MAO electrolyte with magnesium ions did not change the surface characteristics of the porous titanium coating. Each group prepared by MAO had similar microporous structure(P>0.05). There was no significant difference in surface roughness and contact angle between MAO treatment group (MAO, MAO-mg)(P>0.05), but significantly higher than that of Ti group (P<0.05). With the passage of cell culture time, MAO-mg group promoted cell proliferation (P<0.05). MAO-mg group was significantly higher than other groups in ALP and ARS staining. The expression of Runx2 mRNA (P<0.05), ALP(P<0.05) and osteocalcin OCN(P<0.05) in MAO-mg group was significantly higher than that in Ti and MAO groups.

Conclusions: MAO successfully prepared magnesium-containing nanoporous titanium coating, and showed a significant role in promoting osteogenic differentiation.

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来源期刊
上海口腔医学
上海口腔医学 Medicine-Medicine (all)
CiteScore
0.30
自引率
0.00%
发文量
5299
期刊介绍: "Shanghai Journal of Stomatology (SJS)" is a comprehensive academic journal of stomatology directed by Shanghai Jiao Tong University and sponsored by the Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine. The main columns include basic research, clinical research, column articles, clinical summaries, reviews, academic lectures, etc., which are suitable for reference by clinicians, scientific researchers and teaching personnel at all levels engaged in oral medicine.
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