Biological and Physicochemical Assessment of Middle Ear Prosthesis

Polymers

Magdalena Ziąbka¹  Michał Dziadek²  Aleksandra Królicka³ 

[1] AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Ceramics and Refractories, 30-059 Krakow, Poland;AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Glass Technology and Amorphous Coatings, 30-059 Krakow, Poland;University of Gdansk, Intercollegiate Faculty of Biotechnology UG-GUMed, Department of Biotechnology, Laboratory of Biologically Active Compounds, 80-307 Gdansk, Poland;

关键词: polymeric implants;    middle ear prosthesis;    bactericidal efficacy;    cytotoxicity;   

DOI  :  10.3390/polym11010079

来源: DOAJ

【 摘 要 】

Polymers modified with bioactive nanoparticles are a promising solution for patients who need a tissue replacement. Modern implants, thanks to bioactive and bactericidal functions, facilitate the healing and regeneration process of the replaced tissue. The aim of this study was to assess whether silver nanoparticles (AgNPs) could support antibacterial function without cytotoxic effect and deterioration of biostability. This article describes biological and physiochemical aspects concerning a new polymeric middle ear implant (Otoimplant) enriched with silver nanoparticles. This kind of prosthesis is a promising implant for the reconstruction of ossicles in ossiculoplasty. We found that incorporation of silver nanoparticles into a polymeric matrix resulted in bactericidal efficacy against Gram-positive and Gram-negative bacteria, both resistant to antibiotics and basic strains. Our prostheses do not show cytotoxic effect and are a suitable biomaterial platform for effective culture of Saos2 and NHOst osteoblastic cells. The in vitro incubation of the samples in distilled water revealed that surface parameters, such as roughness, may slightly increase as a result of unveiling nanoparticles. However, the prolonged immersion does not change mechanical parameters. During one-year incubation, the prosthesis proved to retain stable values of Young’s modulus, tensile strength, propagation of longitudinal ultrasonic waves, pH, and conductivity.

【 授权许可】

Unknown