In vitro characterization of hydroxyapatite and cobalt ferrite nanoparticles compounds and their biocompatibility in vivo

Journal of Materials Science: Materials in Medicine

Sheila M. C. M. Bicalho¹  Pascally M. A. G. Araújo²  Ana Cristina F. M. Costa³  Fabiana R. Araújo³  Cristiane C. Vital Cintra⁴  Andréa P. B. Borges⁴  Emily C. Carlo Reis⁴  Dayana A. C. Ferreira-Ermita⁴  Iara M. Ribeiro⁴  Fabrício L. Valente⁴  Fabrícia H. Loures⁴ 

[1] JHS Chemical Laboratory Ltda;Laboratory of Synthesis of Ceramic Materials, Universidade Federal de Campina Grande;Veterinary Department, Universidade Federal de Minas Gerais;Veterinary Department, Universidade Federal de Viçosa;

关键词: Biomaterial;    Cobalt ferrite nanoparticles;    Hydroxyapatite;    Biocompatibility;   

DOI  :  10.1007/s10856-022-06640-z

来源: DOAJ

【 摘 要 】

Abstract Bioactive materials in combination with antibiotics have been widely developed for the treatment of bone infection. Thus, this work aims to characterize six biomaterials formulated with different concentrations of hydroxyapatite and cobalt ferrite nanoparticles, in addition to the antibiotic ciprofloxacin, using X-ray diffraction (XRD), scanning electron microscopy (SEM), and the antibiotic diffusion test on agar. Furthermore, in vivo biocompatibility and the reabsorption process of these materials were analyzed. XRD showed that both hydroxyapatite and cobalt ferrite present high crystallinity. The photomicrographs obtained by SEM revealed that composites have a complex surface, evidenced by the irregular arrangement of the hydroxyapatite and cobalt ferrite granules, besides demonstrating the interaction between their components. The antibiotic-diffusion test showed that all biomaterials produced an inhibition halo in Staphylococcus aureus cultures. For the biocompatibility study, composites were surgically implanted in the dorsal region of rabbits. At 15, 30, 70, and 100 days, biopsies of the implanted regions were performed. The biomaterials were easily identified during histological analysis and no significant inflammatory process, nor histological signs of toxicity or rejection by the adjacent tissue were observed. We can conclude that the biomaterials analyzed are biocompatible, degradable, and effective in inhibiting the in vitro growth of Staphylococcus aureus. Graphical abstract

【 授权许可】

Unknown