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- W4288808800 abstract "The osteogenic differentiation and new bone formation are commonly delayed by bacterial infection of orthopedic implants, which is urgent to be resolved quickly in the clinic. The current paper prepared a strontium-doped electrospinning fiber membrane with antibacterial and osteogenic properties by pulse electrochemical method. Polylactic acid/hydroxyapatite (PLLA/HA) composite fiber substrate was fabricated by electrospinning technology, and strontium doped SrHA/Cu/Polypyrrole (PPy) composite coating was constructed with pulse electrodeposition method on its surface. The strontium doping technique, degradation of Sr2+ and Cu2+, cellular compatibility, and the antibacterial activity of the fiber membrane were examined. The results revealed that the deposition of phosphorus and calcium on composite fiber was the highest, indicating good biological activity. The release of Sr2+ and Cu2+ was stable and gradual due to the modulation of PPy. The composite fiber presented excellent antibacterial performance and the antibacterial rate was close to 100% against Staphylococcus aureus and Escherichia coli. Furthermore, it is conducive to the adhesion, spread, and proliferation of vascular endothelial cells and osteoblasts, namely outstanding osteogenesis and angiogenesis abilities. In conclusion, the multifunctional PLLA/HA@SrHA/Cu/PPy composite fiber membrane with good antibacterial and osteogenic activity by electrospinning technology and pulsed electrochemical deposition method provides an effective strategy for the poor bone healing of infected bone defects." @default.
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- W4288808800 date "2022-12-01" @default.
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- W4288808800 title "Strontium doped electrospinning fiber membrane with antibacterial and osteogenic properties prepared by pulse electrochemical method" @default.
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- W4288808800 doi "https://doi.org/10.1016/j.engreg.2022.07.005" @default.
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