Three-dimensional bioglass-collagen-phosphatidylserine scaffolds designed with functionally graded structure and mechanical features
-
Chunrong Yang
,
Huazhong Wu
Abstract
The development of scaffolds featuring spatiotemporal controlled release of drugs is highly desirable. The goal of this study is to construct an inhomogeneous scaffold with gradient pore structure from top layer to bottom layer. The scaffolds were prepared using bioglass (BG), phosphatidylserine (PS) and steroidal saponins (SS) loaded collagen (COL) microparticles as the main components. The resulting scaffold constructs were characterized in terms of their morphology, drug release kinetics and mechanisms, as well as macroscopic form stability and mechanical properties. Pore interconnectivity and graded distribution were demonstrated using scanning electron microscopy (SEM). Such constructs have been further shown to be advantageous for temporal and spatial control of drug release and deposition in the scaffolds, with a potential to repair bone defect more precisely and effectively. Changes in the BG content resulted in distinct macroscopic form stability and mechanical properties to scaffolds. An increase in the BG content in scaffolds led to less volume swell as well as higher ultimate strength and compressive modulus, which makes the scaffolds mechanically adjustable according to certain structures and properties of different bone defect sites. The developed scaffolds may show promise for promoting bone tissue regeneration.
Author Statement
Research funding: This work was financially supported by the National Natural Science Foundation of China (grant no. 51702052), Natural Science Foundation Project of Fujian (grant no. 2018J01625), Scientific Research Development Foundation Project of Fujian University of Technology (grant no. GY-Z15093) and Scientific Research Starting Foundation Project of Fujian University of Technology (grant no. GY-Z0854).
Conflict of interest: The authors have no conflict of interest.
Informed consent: Informed consent is not applicable.
Ethical approval: The conducted research is not related to either human or animals use.
References
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©2018 Walter de Gruyter GmbH, Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Editorial
- The role of textile engineering in regenerative medicine
- Research articles
- Fibrous composite material for textile heart valve design: in vitro assessment
- Electro-spun PLA-PEG-yarns for tissue engineering applications
- Preparation, characterization and blood compatibility assessment of a novel electrospun nanocomposite comprising polyurethane and ayurvedic-indhulekha oil for tissue engineering applications
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- Differential mineralization of human dental pulp stem cells on diverse polymers
- Heart valves from polyester fibers: a preliminary 6-month in vivo study
- Adaptation of cardiovascular system stent implants
- Synthesizing selenium- and silver-substituted hydroxyapatite-based bone grafts and their effects on antibacterial efficiency and cell viability
- Long-term recording performance and biocompatibility of chronically implanted cylindrically-shaped, polymer-based neural interfaces
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