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In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
Published on: September 20, 2012
Apatite coating on anionic and native collagen films by an alternate soaking process
J C Góes1, S D Figueiró, A M Oliveira
1Laboratório de Telecomunicações e Ciência dos Materiais (LOCEM), Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, CEP 60455-760, Fortaleza, Ceará, Brazil. jcgoes@fisica.ufc.br
Acta Biomaterialia
|May 1, 2007
Summary
Anionic collagen (AC) films show significantly faster apatite coating than native collagen (NC) films due to higher carboxyl group density. This enhanced apatite nucleation is crucial for biomaterial development.
Area of Science:
- Biomaterials Science
- Materials Chemistry
- Biomineralization
Background:
- Collagen is a key biomaterial for tissue engineering and regenerative medicine.
- Controlling apatite formation on collagen is essential for developing effective bone substitutes.
- Native collagen (NC) has limited functional groups for controlled biomineralization.
Purpose of the Study:
- To investigate apatite coating on collagen films with varying carboxyl group densities.
- To compare the apatite coating efficiency between anionic collagen (AC) and native collagen (NC).
- To understand the role of carboxyl groups in apatite nucleation on collagen.
Main Methods:
- Anionic collagen (AC) films were prepared by hydrolyzing asparagine and glutamine residues.
- Alternate soaking process was used for apatite coating on AC and NC films.
- X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed for analysis.
Main Results:
- Apatite coating was successfully achieved on both AC and NC films after 100 reaction cycles.
- AC films exhibited a 1.24 times faster apatite coating rate compared to NC films.
- SEM images revealed regular porous apatite coatings within the collagen fibrils for both film types.
Conclusions:
- The increased carboxyl group density in AC significantly enhances heterogeneous nucleation of apatite.
- AC films demonstrate superior performance for apatite coating compared to NC films.
- These findings support the use of modified collagen for improved biomimetic bone regeneration applications.
