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• W3142050701 abstract "New materials are required for bone healing in regenerative medicine able to temporarily substitute damaged bone and to be subsequently resorbed and replaced by endogenous tissues. Taking inspiration from basic composition of the mammalian bones, composed of collagen, apatite and a number of substitution ions, among them magnesium (Mg 2+ ), in this work, novel composite scaffolds composed of collagen(10%)-hydroxyapatite (HAp)(90%) and collagen(10%)-HAp(80%)-Mg(10%) were developed. The lyophilization was used for composites preparation. An insight into the nanostructural nature of the developed scaffolds was performed by Scanning Electron Microscopy coupled with Energy Dispersive X-Ray and Transmission Electron Microscopy coupled with Energy Dispersive X-Ray. The HAp nanocrystallite clusters and Mg nanoparticles were homogeneously distributed within the scaffolds and adherent to the collagen fibrils. The samples were tested for degradation in Simulated Body Fluid (SBF) solution by soaking for up to 28 days. The release of Mg from collagen(10%)-HAp(80%)-Mg(10%) composite during the period of up to 21 days was attested, this composite being characterized by a decreased degradation rate with respect to the composite without Mg. The developed composite materials are promising for applications as bone substitute materials favouring bone healing and regeneration. • Lyophilization process was used to obtain new composite scaffolds. • Collagen(10%)-HAp(90%) and collagen(10%)-HAp(80%)-Mg(10%) scaffolds were developed. • HAp nanocrystallites and Mg nanoparticles are embedded into collagen fibrils. • Degradation in SBF attested the Mg release from composite during up to 21 days. • Composite collagen(10%)-HAp(80%)-Mg(10%) scaffold can be applied as bone substitute." @default.
• W3142050701 created "2021-04-13" @default.
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• W3142050701 date "2021-10-01" @default.
• W3142050701 modified "2023-09-29" @default.
• W3142050701 title "In vitro characterization of novel nanostructured collagen-hydroxyapatite composite scaffolds doped with magnesium with improved biodegradation rate for hard tissue regeneration" @default.
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• W3142050701 doi "https://doi.org/10.1016/j.bioactmat.2021.02.030" @default.
• W3142050701 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8005775" @default.
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