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Electrospun formulations of acyclovir, ciprofloxacin and cyanocobalamin for ocular drug delivery

Baskakova, A; Awwad, S; Jiménez, JQ; Gill, H; Novikov, O; Khaw, PT; Brocchini, S; ... Williams, GR; + view all (2016) Electrospun formulations of acyclovir, ciprofloxacin and cyanocobalamin for ocular drug delivery. International Journal of Pharmaceutics , 502 (1-2) pp. 208-218. 10.1016/j.ijpharm.2016.02.015. Green open access

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Abstract

Two series of fibers containing the active ingredients acyclovir, ciprofloxacin and cyanocobalamin, and combinations of these drugs, were prepared by electrospinning. One set used the hydrophilic poly(vinylpyrrolidone) (PVP) as the filament-forming polymer, while the other used the slow-dissolving poly(ε-caprolactone) (PCL). The fibers were found to have cylindrical morphologies, although there was evidence for solvent occlusion with the PVP systems and for some drug particles in the PCL case. The active ingredients were generally present in the amorphous physical form in the case of PVP, but evidence of crystallinity was observed with PCL. The existence of intermolecular interactions between the drugs and polymers was proven using simple molecular modeling calculations. Drug release from the various fibers was tested in a validated in vitro outflow model of the eye, and the fiber formulations found to be capable of extending drug release. We thus conclude that electrospun matrices such as those prepared in this work have potential for use as intravitreal implants.

Type: Article
Title: Electrospun formulations of acyclovir, ciprofloxacin and cyanocobalamin for ocular drug delivery
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ijpharm.2016.02.015
Publisher version: http://dx.doi.org/10.1016/j.ijpharm.2016.02.015
Language: English
Additional information: Copyright © 2016. This manuscript version is published under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International licence (CC BY-NC-ND 4.0). This licence allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licences are available at http://creativecommons.org/licenses/by/4.0.
Keywords: Acyclovir (Pubchem ID: 2022), Electrospinning, antivirals, ciprofloxacin (2764), cyanocobalamin (5311498), fibers, half-life, in vitro, ocular drug delivery, posterior segment, sustained release
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Ophthalmology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy > Pharmaceutics
URI: http://discovery.ucl.ac.uk/id/eprint/1475717
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