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Expansion of Two-dimension Electrospun Nanofiber Mats into Three-dimension Scaffolds
Published on: January 7, 2019
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Electrospun Polylactide-Nano-HydroxyapatiteVancomycin Composite Scaffolds for Advanced Osteomyelitis Therapy
Journal of Biomedical Nanotechnology
|May 11, 2019
Summary
New electrospun scaffolds effectively treat osteomyelitis by combining polylactide, nano-hydroxyapatite-graft-polylactide, and vancomycin. These scaffolds reduce infection and promote bone regeneration, offering a promising orthopedic clinic solution.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Infectious Diseases
Background:
- Osteomyelitis presents a significant clinical challenge due to infection and bone defects.
- Current treatments often struggle to simultaneously address both infection and bone regeneration.
- There is an urgent need for advanced therapeutic strategies in orthopedic clinics.
Purpose of the Study:
- To develop multifunctional electrospun scaffolds for treating advanced osteomyelitis.
- To create a composite material integrating polylactide (PLA), nano-hydroxyapatite-graft-polylactide (nHA-g-PLA), and vancomycin (VAN).
- To evaluate the efficacy of these scaffolds in combating infection and promoting bone defect repair.
Main Methods:
- Fabrication of electrospun scaffolds using PLA, nHA-g-PLA, and VAN.
- Assessment of vancomycin sustained release profiles from the composite scaffolds.
- In vitro evaluation of antibacterial activity against Staphylococcus aureus (S. aureus).
- In vitro assessment of osteoblast adhesion and proliferation on scaffold surfaces.
- In vivo evaluation of bone infection reduction and bone regeneration in a defect model.
Main Results:
- The PLA/nHA/VAN scaffolds demonstrated sustained release of vancomycin.
- Excellent antibacterial activity against S. aureus was observed.
- The presence of nHA-g-PLA created a rough surface that promoted osteoblast adhesion and proliferation.
- The PLA/nHA/VAN scaffolds, particularly PLA/nHA10/VAN8, significantly reduced bone infections and enhanced bone regeneration.
- Superior outcomes in infection control and bone repair were noted compared to control groups.
Conclusions:
- Multifunctional electrospun scaffolds composed of PLA, nHA-g-PLA, and VAN are highly effective for osteomyelitis treatment.
- The sustained release of vancomycin and promotion of osteogenesis contribute to their therapeutic potential.
- These scaffolds show great promise for clinical application in orthopedic settings, addressing both infection and bone defects.
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