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

Autor: Braz JKFS; Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido, UFERSA, Av. Francisco Mota, 572 -Bairro Costa e Silva, Mossoró, RN, CEP: 59.625-900, Brazil., Martins GM; Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido, UFERSA, Av. Francisco Mota, 572 -Bairro Costa e Silva, Mossoró, RN, CEP: 59.625-900, Brazil., Sabino V; Departamento de Morfologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil., Vitoriano JO; Laboratório de Processamento a Plasma, LABPLASMA, Universidade Federal Rural do Semi-Árido, UFERSA, Mossoró, RN, Brazil., Barboza CAG; Departamento de Morfologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil., Soares AKMC; Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil., Rocha HAO; Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil., Oliveira MF; Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido, UFERSA, Av. Francisco Mota, 572 -Bairro Costa e Silva, Mossoró, RN, CEP: 59.625-900, Brazil., Alves Júnior C; Laboratório de Processamento a Plasma, LABPLASMA, Universidade Federal Rural do Semi-Árido, UFERSA, Mossoró, RN, Brazil., Moura CEB; Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido, UFERSA, Av. Francisco Mota, 572 -Bairro Costa e Silva, Mossoró, RN, CEP: 59.625-900, Brazil. carlos.moura@ufersa.edu.br.
Jazyk: angličtina
Zdroj: Biotechnology letters [Biotechnol Lett] 2019 May; Vol. 41 (4-5), pp. 503-510. Date of Electronic Publication: 2019 Feb 28.
DOI: 10.1007/s10529-019-02657-7
Abstrakt: Objectives: To evaluate the effects of the surface modification of 316L stainless steel (SS) by low-temperature 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.
Databáze: MEDLINE
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