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• W2034692634 startingPage "1305" @default.
• W2034692634 abstract "The study was aimed at assessing the potential of enzyme-embedded antibiotic-releasing polycaprolactone (PCL)-based electrospun fibres for tunable drug delivery. This was attempted by incorporation of gentamicin sulphate (GS) in the biocompatible polymer (PCL) matrix, with the degradation of the matrix being ensured by co-impregnating a polymer-degrading enzyme (lipase). Single phase solutions were obtained by hydrophobic ion pairing of GS and surfactant coating of lipase with an anionic surfactant, docusate sodium salt Aerosol OT (AOT). By electrospinning the solution, we could produce PCL fibres containing 11% (w/w) GS–AOT and 28 U (w/w) lipase–AOT. However, sustained release of GS was not obtained. FESEM analysis showed that the fibres did not undergo the expected degradation. Subsequent experiments with unmodified lipase gave satisfactory results; the polymer underwent degradation displaying characteristic perforations in the fibres, suggestive of ‘endo-attack’. By modulating the concentrations of lipase (1 to 28 U, w/w), we could obtain GS release rates that varied from 0.53 to 32 mg/ml/d. Accordingly, the lifetime of the fibres could be tuned (10 h to 25 days). The fibres showed excellent antibacterial activity against Staphylococcus aureus throughout their lifetime." @default.
• W2034692634 created "2016-06-24" @default.
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• W2034692634 date "2013-01-11" @default.
• W2034692634 modified "2023-09-27" @default.
• W2034692634 title "Endogenously triggered electrospun fibres for tailored and controlled antibiotic release" @default.
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• W2034692634 doi "https://doi.org/10.1080/09205063.2012.757725" @default.
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• W2034692634 hasPublicationYear "2013" @default.
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