Abstract
Thermosensitive injectable hydrogels for bone regeneration consisting of chitosan, sodium beta-glycerophosphate (Na-β-GP) and alkaline phosphatase (ALP) were enriched with oxygenated perfluorodecalin (PFD), a liquid hydrophobic perfluorochemical with high oxygen affinity, in order to improve cell growth on the hydrogels. Furthermore, influence of PFD concentration on hydrogel physicochemical properties relevant for bone regeneration, namely gelation speed, radiopacity and homogenicity, was investigated. Addtionally, ALP-mediated and non-ALP-mediated mineralization were evaluated by incubation in 0.1M calcium glycerophosphate and simulated body fluid. 2% (w/v) chitosan hydrogels containing 2.5mg/ml ALP were enriched with PFD at five concentrations, namely 0 (control), 0.069, 0.138, 0.207 and 0.276ml/ml hydrogel, denoted A, B, C, D and E, respectively. Rheometrical investigations revealed that gelation speed increased with increasing PFD concentration. Micro-CT analysis revealed homogenicity of all sample groups except E and that radiopacity increased in the order B>C>A>D>E. ALP-mediated and non-ALP-mediated mineralization were not affected adversely by PFD. Growth of human adipose tissue-derived mesenchymal stem cells (ADSC) encapsulated in hydrogels was markedly higher in sample groups containing PFD, i.e. B–E. Hence, incorporation of oxygenated PFD can improve the suitability of hydrogels as bone regeneration materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
