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Cytotoxicity of Metal Ions Released from Nitinol Alloys on Endothelial Cells

机译:镍钛诺合金释放的金属离子对内皮细胞的细胞毒性

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摘要

Most implantable medical devices are expected to function in the body over an extended period of time. Therefore, immersion tests under simulated conditions can be useful for assessing the amount of metal ions released in situ. In this investigation, dissolved ions from as-received binary and ternary Nitinol alloys in cell culture media were periodically measured under static and dynamic conditions. Endothelial cells were grown in aliquots of culture media obtained and the effect of dissolved ions on cell proliferation and viability of endothelial cells (HUVEC) was studied by cytotoxicity assays. The concentration of metal ions in the media was measured by inductively coupled plasma mass spectrometry.
机译:预期大多数可植入医疗设备会在体内长时间运行。因此,在模拟条件下进行的浸没测试对于评估就地释放的金属离子的量可能有用。在这项研究中,定期在静态和动态条件下测量了从细胞培养基中接收的二元和三元镍钛诺合金中溶解的离子。内皮细胞以等分试样的培养基生长,并通过细胞毒性试验研究了溶解离子对内皮细胞(HUVEC)增殖和活力的影响。通过电感耦合等离子体质谱法测量介质中金属离子的浓度。

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