The Influence of Mg2+ Ions on the In Vitro Efficacy of Chitosan-Titanium Dioxide Nanotubes (CTNTs) Scaffolds
| Autor: | Shui Wei Kho, Hwei-San Loh, Nehemiah Li Heng Ang, Cheng Heng Pang, Siew Shee Lim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics Biocompatibility Article Subject General Chemical Engineering 0206 medical engineering 02 engineering and technology Chitosan chemistry.chemical_compound symbols.namesake Adsorption Monolayer Bone regeneration Organic Chemistry technology industry and agriculture Langmuir adsorption model Biomaterial 021001 nanoscience & nanotechnology 020601 biomedical engineering lcsh:TP1080-1185 chemistry Chemical engineering lcsh:Polymers and polymer manufacture Titanium dioxide symbols 0210 nano-technology |
| Zdroj: | Advances in Polymer Technology, Vol 2019 (2019) |
| ISSN: | 0730-6679 |
| DOI: | 10.1155/2019/9679627 |
| Popis: | Low mechanical strength and lack of osteoconductive cues are problems associated with chitosan-based scaffolds. This research aimed to fabricate reinforced chitosan-titanium dioxide (TiO2) nanotubes (CTNTs) scaffolds attributed to the enhanced biocompatibility and physical properties of TiO2 nanotubes (TNTs). The incorporation of hydrothermally synthesized TNTs at weight percent of 16 into chitosan was achieved via direct blending and lyophilization. CTNTs scaffolds were further subjected to 24-h adsorption in MgCl2 solutions of 0.5 mM, 1 mM, 2.5 mM, and 5 mM at physiological pH. The adsorption affinity of CTNTs towards Mg2+ ions was high and mainly attributed to the macroporosity of scaffolds and nanocavities of TNTs. The maximum monolayer adsorption capacity of CTNTs for Mg2+ ions was 8.8 mg/g scaffolds. Its adsorption isotherm fitted well with Langmuir isotherm by showing R2 of 0.9995. Fluorescence-based staining, cell viability, and alkaline phosphatase assays indicated that the adsorbed Mg2+ ions onto CTNTs scaffolds aided in promoting higher proliferation and early differentiation of MG63 cells than scaffolds without Mg2+ ions in a concentration-dependent manner. Based on current results, CTNTs scaffolds with Mg2+ ions may be a potential biomaterial for bone regeneration. |
| Databáze: | OpenAIRE |
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