Dual Therapy Coating on Micro/Nanoscale Porous Polyetheretherketone to Eradicate Biofilms and Accelerate Bone Tissue Repair.
Macromol Biosci
; 19(2): e1800376, 2019 02.
Article
em En
| MEDLINE
| ID: mdl-30549406
ABSTRACT
Defective osteogenesis and latent infections continue to be two major issues in the therapy of bone tissue regeneration. In this study, a unique hierarchically micro/nanoscale-architecture is first proposed and produced on polyetheretherketone (PEEK). Besides, a "simvastatin-PLLA film-tobramycin microspheres" delivery system is subsequently fabricated to endow the PEEK implant with osteogenic and antibacterial capabilities. In vitro antibacterial evaluations confirm that the decorated PEEK scaffolds possess excellent resistance against planktonic/adherent bacteria. In vitro cell attachment/proliferation, lactate dehydrogenase (LDH) content, alkaline phosphatase (ALP) activity, calcium mineral deposition experiments, and real-time PCR analysis all exhibit that the superior proliferation rate and osteo-differentiation potential of MC3T3-E1 pre-osteoblasts are presented on the PEEK samples with dual functional decoration. In the mouse calvarial defect model, the micro-CT and histological results demonstrate that our scaffolds display a remarkable bone forming capability. Generally, the PEEK scaffolds co-endowed with simvastatin and tobramycin microspheres possess great potential in clinics.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Osteogênese
/
Polietilenoglicóis
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Desenvolvimento Ósseo
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Regeneração Óssea
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Substitutos Ósseos
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Biofilmes
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Cetonas
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article