Fabrication and characterisation of drug-loaded electrospun polymeric nanofibers for controlled release in hernia repair

Ivan Hall Barrientos, Eleonora Paladino, Sarah Brozio, Melissa K. Passarelli, Susan Moug, Richard A. Black, Clive G. Wilson, Dimitrios A. Lamprou

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The chemical distribution and mechanical effects of drug compounds in loaded electrospun scaffolds, a potential material for hernia repair mesh, were characterised and the efficacy of the material was evaluated. Polycaprolactone electrospun fibres were loaded with either the antibacterial agent, irgasan, or the broad-spectrum antibiotic, levofloxacin. The samples were subsequently characterised by rheological studies, scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle goniometry (CAG), in vitro drug release studies, antibacterial studies and time-of-flight secondary ion mass spectrometry (ToF-SIMS). Increased linear viscoelastic regions observed in the rheometry studies suggest that both irgasan and levofloxacin alter the internal structure of the native polymeric matrix. In vitro drug release studies from the loaded polymeric matrix showed significant differences in release rates for the two drug compounds under investigation. Irgasan showed sustained release, most likely driven by molecular diffusion through the scaffold. Conversely, levofloxacin exhibited a burst release profile indicative of phase separation at the edge of the fibres. Two scaffold types successfully inhibited bacterial growth when tested with strains of E. coli and S. aureus. Electrospinning drug-loaded polyester fibres is an alternative, feasible and effective method for fabricating non-woven fibrous meshes for controlled release in hernia repair.
LanguageEnglish
Pages329–337
Number of pages9
JournalInternational Journal of Pharmaceutics
Volume517
Issue number1-2
Early online date14 Dec 2016
DOIs
Publication statusPublished - 30 Jan 2017

Fingerprint

Nanofibers
Levofloxacin
Herniorrhaphy
Secondary Ion Mass Spectrometry
Pharmaceutical Preparations
Anti-Bacterial Agents
Polyesters
Atomic Force Microscopy
Electron Scanning Microscopy
Escherichia coli
Growth
cloflucarban
In Vitro Techniques
Drug Liberation

Keywords

  • electrospinning
  • scaffolds
  • hernia
  • drug release
  • physicochemical characterisation

Cite this

Hall Barrientos, Ivan ; Paladino, Eleonora ; Brozio, Sarah ; Passarelli, Melissa K. ; Moug, Susan ; Black, Richard A. ; Wilson, Clive G. ; Lamprou, Dimitrios A. / Fabrication and characterisation of drug-loaded electrospun polymeric nanofibers for controlled release in hernia repair. In: International Journal of Pharmaceutics. 2017 ; Vol. 517, No. 1-2. pp. 329–337.
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Fabrication and characterisation of drug-loaded electrospun polymeric nanofibers for controlled release in hernia repair. / Hall Barrientos, Ivan; Paladino, Eleonora; Brozio, Sarah; Passarelli, Melissa K.; Moug, Susan; Black, Richard A.; Wilson, Clive G.; Lamprou, Dimitrios A.

In: International Journal of Pharmaceutics, Vol. 517, No. 1-2, 30.01.2017, p. 329–337.

Research output: Contribution to journalArticle

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