In vitro bioactivity studies of ceramic structures isolated from marine sponges.
Fiche publication
Date publication
août 2016
Journal
Biomedical materials (Bristol, England)
Auteurs
Membres identifiés du Cancéropôle Est :
Pr MANO João F.
Tous les auteurs :
Barros AA, Aroso IM, Silva TH, Mano JF, Duarte AR, Reis RL
Lien Pubmed
Résumé
In this work, we focused on the potential of bioceramics from different marine sponges-namely Petrosia ficiformis, Agelas oroides and Chondrosia reniformis-for novel biomedical/industrial applications. The bioceramics from these sponges were obtained after calcination at 750 °C for 6 h in a furnace. The morphological characteristics were evaluated by scanning electron microscopy (SEM). The in vitro bioactivity of the bioceramics was evaluated in simulated body fluid (SBF) after 14 and 21 d. Observation of the bioceramics by SEM after immersion in SBF solution, coupled with spectroscopic elemental analysis (EDS), showed that the surface morphology was consistent with a calcium-phosphate (Ca/P) coating, similar to hydroxyapatite crystals (HA). Evaluation of the characteristic peaks of Ca/P crystals by Fourier transform infrared spectroscopy and x-ray diffraction further confirmed the existence of HA. Cytotoxicity studies were carried out with the different ceramics and these were compared with a commercially available Bioglass(®). In vitro tests demonstrated that marine bioceramics from these sponges are non-cytotoxic and have the potential to be used as substitutes for synthetic Bioglass(®).
Mots clés
Animals, Biocompatible Materials, chemistry, Body Fluids, chemistry, Calcium Phosphates, chemistry, Ceramics, chemistry, In Vitro Techniques, Microscopy, Electron, Scanning, Porifera, chemistry, Spectroscopy, Fourier Transform Infrared
Référence
Biomed Mater. 2016 08 2;11(4):045004