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Pàgina inicial > Articles > Articles publicats > ZnO Nanosheet-Coated TiZrPdSiNb Alloy as a Piezoelectric Hybrid Material for Self-Stimulating Orthopedic Implants |
Data: | 2021 |
Resum: | A Ti-based alloy (Ti45Zr15Pd30Si5Nb5) with already proven excellent mechanical and biocompatibility features has been coated with piezoelectric zinc oxide (ZnO) to induce the electrical self-stimulation of cells. ZnO was grown onto the pristine alloy in two different morphologies: a flat dense film and an array of nanosheets. The effect of the combined material on osteoblasts (electrically stimulable cells) was analyzed in terms of proliferation, cell adhesion, expression of differentiation markers and induction of calcium transients. Although both ZnO structures were biocompatible and did not induce inflammatory response, only the array of ZnO nanosheets was able to induce calcium transients, which improved the proliferation of Saos-2 cells and enhanced the expression of some early differentiation expression genes. The usual motion of the cells imposes strain to the ZnO nanosheets, which, in turn, create local electric fields owing to their piezoelectric character. These electric fields cause the opening of calcium voltage gates and boost cell proliferation and early differentiation. Thus, the modification of the Ti45Zr15Pd30Si5Nb5 surface with an array of ZnO nanosheets endows the alloy with smart characteristics, making it capable of electric self-stimulation. |
Ajuts: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-292 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-503 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-1420 Ministerio de Economía y Competitividad MAT2017-86357-C3-1-R Ministerio de Economía y Competitividad MAT2017-86357-C3-3-R Ministerio de Economía y Competitividad EUR2020-112082 |
Nota: | Altres ajuts: This work has been partially supported by La Caixa Foundation under the Junior Leader Retaining program ( LCF/BQ/PR19/11700010). |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | TiZrPdSiNb alloy ; Piezoelectric ; Nanogenerators ; Self-stimulating ; Osteoblast ; Proliferation ; Differentiation |
Publicat a: | Biomedicines, Vol. 9 Núm. 4 (2021) , p. 352, ISSN 2227-9059 |
16 p, 3.8 MB |