主要探讨血管支架材料--NiTi合金不同表面形貌对牛主动脉血管内皮细胞及血小板黏附的影响.采用机械抛光、机械刻蚀和化学浸蚀的方法制备微孔、微凹槽等微结构特征的NiTi合金表面.利用扫描电镜、粗糙度轮廓仪等对材料表面微观形貌和平均粗糙度进行表征,并测定微孔和微凹槽的材料表面对血小板及血管内皮细胞黏附的影响.结果表明:NiTi合金基体表面制备纳米级粗糙度的微孔和微凹槽等不同微观形貌对血小板黏附的影响不显著,但可明显促进内皮细胞的黏附;具有微孔结构的材料表面黏附的细胞数量最多,且细胞生长状态良好;材料表面微凹槽结构对细胞的早期黏附具有接触诱导效应.微粗糙化的各种不同材料表面形貌对血小板黏附的影响不显著.
参考文献
[1] | Saito T;Hokimoto S;Oshima S;Noda K;Kojyo Y;Matsunaga K .Metal allergic reaction in chronic refractory in-stent restenosis.[J].Cardiovascular revascularization medicine: including molecular interventions,2009(1):17-22. |
[2] | Mitra AK;Agrawal DK .In stent restenosis: bane of the stent era.[J].Journal of Clinical Pathology,2006(3):232-239. |
[3] | Versari D;Lerman LO;Lerman A .The importance of reendothelialization after arterial injury.[J].Current pharmaceutical design,2007(17):1811-1824. |
[4] | Shabalovskaya SA;Rondelli GC;Undisz AL .The electrochemical characteristics of native Nitinol surfaces.[J].Biomaterials,2009(22):3662-3671. |
[5] | Shabalovskaya,S;Anderegg,J;Van-Humbeeck,J .Critical overview of Nitinol surfaces and their modifications for medical applications.[J].Acta Biomaterialia,2008(3):447-467. |
[6] | Rawsterne R E;Todd S J;Gough JE et al.[J].ACTA BIOMATERIALIA,2007,3(05):715. |
[7] | Tzoneva R;Faucheux N;Groth T .[J].Biochimica Et Biophysica Acta,2007,1770(11):1538. |
[8] | Finke B;Luethen F;Schroeder K;Mueller PD;Bergemann C;Frant M;Ohl A;Nebe BJ .The effect of positively charged plasma polymerization on initial osteoblastic focal adhesion on titanium surfaces.[J].Biomaterials,2007(30):4521-4534. |
[9] | Chen JY;Tian RL;Leng YX;Yang P;Wang J;Wan GJ;Zhao AS;Sun H;Huang N .Effect of Ar plasma etching of Ti-O film surfaces on biological behavior of endothelial cell[J].Surface & Coatings Technology,2007(15):6901-6905. |
[10] | Samaroo H D;Lu J;Webster T J .[J].Int J Nanomed,2008,3(01):75. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%