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The response of macrophages to a Cu-Al-Ni shape memory alloyČolić, Miodrag ...Cu-Al-Ni shape memory alloys (SMAs) have been investigated as materials for medical devices, but little is known about their biocompatibility. The aim of this work was to study the response of rat ... peritoneal macrophages (PMØ) to a Cu-Al-Ni SMA in vitro, by measuring the functional activity of mitochondria, necrosis, apoptosis, and production of proinflammatory cytokines. Rapidly solidified (RS) thin ribbons were used for the tests. The control alloy was a permanent mold casting of the same composition, but without the shape memory effect. Our results showed that the control alloy was severely cytotoxic, whereas RS ribbons induced neither necrosis nor apoptosis of PMØ. These findings correlated with the data that RS ribbons are significantly more resistant to corrosion compared to the control alloy, as judged by the lesser release of Cu and Ni in the conditioning medium. However, the ribbons generated intracellular reactive oxygen species and upregulated the production of IL-6 by PMØ. These effects were almost completely abolished by conditioning the RS ribbons for 5 weeks. In conclusion, RS significantly improves the corrosion stability and biocompatibility of Cu-Al-Ni SMA. The biocompatibility of this functional material could be additionally enhanced by conditioning the ribbons in cell culture medium.Source: Journal of biomaterials applications. - ISSN 0885-3282 (Vol. 25, no. 3, Sep. 2010, str. 269-286)Type of material - article, component partPublish date - 2010Language - englishCOBISS.SI-ID - 13598742
source: Journal of biomaterials applications. - ISSN 0885-3282 (Vol. 25, no. 3, Sep. 2010, str. 269-286)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Čolić, Miodrag | |
Tomić, Sergej | |
Rudolf, Rebeka | 14335 |
Anžel, Ivan, inženir metalurgije in materialov | 10369 |
Lojen, Gorazd | 11951 |
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