Plasma nitriding under low temperature improves the endothelial cell biocompatibility of 316L stainless steel

• Autor(a) principal: Braz, Janine Karla França da Silva
• Data de Publicação: 2019
• Outros Autores: Martins, Gabriel M., Sabino, Vladimir, Vitoriano, Jussier de Oliveira, Barboza, Carlos Augusto Galvão, Soares, Ana Katarina Menezes da Cruz, Rocha, Hugo Alexandre de Oliveira, Oliveira, Moacir. F., Alves Júnior, Clodomiro, Moura, Carlos Eduardo B.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/31133
• topic: Biomaterial; Intravascular devices; Metal surfaces; Nitrited; Stents

Objectives To evaluate the effects of the surface modification of 316L stainless steel (SS) by lowtemperature plasma nitriding on endothelial cells for stent applications. Results X-ray diffraction (XRD) confirmed the incorporation of nitrogen into the treated steel. The surface treatment significantly increased SS roughness and hydrophilic characteristics. After 4 h the cells adhered to the nitride surfaces and formed clusters. During the 24 h incubation period, cell viability on the nitrided surface was higher compared to the polished surface. Nitriding reduced late apoptosis of rabbit aorta endothelial cell (RAEC) on the SS surface. Conclusion Low temperature plasma nitriding improved the biocompatible of stainless steel for use in stents.