Biological and physicochemical assessment of middle ear prosthesis
Magdalena Ziąbka , Michał Dziadek , Aleksandra Królicka
AbstractPolymers 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.
|Journal series||Polymers, ISSN 2073-4360, (A 40 pkt)|
|Publication size in sheets||0.65|
|Keywords in English||polymeric implants, middle ear prosthesis, bactericidal efﬁcacy, cytotoxicity|
|License||Journal (articles only); published final; ; with publication|
|Score||= 40.0, 24-07-2019, ArticleFromJournal|
|Publication indicators||= 0; : 2017 = 1.213; : 2017 = 2.935 (2) - 2017=3.509 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.