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A drug-incorporated-microparticle-eggshell-membrane-scaffold (DIMES) dressing: a novel biomaterial for localised wound regeneration

Mensah, Rosemond A; Cook, Michael T; Kirton, Stewart B; Hutter, Victoria; YS Chau, David; (2023) A drug-incorporated-microparticle-eggshell-membrane-scaffold (DIMES) dressing: a novel biomaterial for localised wound regeneration. European Journal of Pharmaceutics and Biopharmaceutics 10.1016/j.ejpb.2023.07.007. Green open access

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Abstract

Chronic wounds affect millions of people annually and have emotional and financial Implications in addition to health issues. The current treatment for chronic wounds involves the repeated use of bandages and drugs such as antibiotics over an extended period. A cost-effective and convenient solution for wound healing is the development of drug-incorporated bandages. This study aimed to develop a biocompatible bandage made of drug-incorporated poly (lactic-co-glycolic acid) (PLGA) microparticles (MPs) and eggshell membrane (ESM) for cornea wound healing. ESM has desirable properties for wound healing and can be isolated from eggshells using acetic acid or ethylenediaminetetraacetic acid (EDTA) protocols. Fluorescein isothiocyanate-labelled Bovine Serum Albumin (FITC-BSA) was used as a model drug, and the PLGA MPs were fabricated using a solvent extraction method. The MPs were successfully attached to the fibrous layer of the ESM using NaOH. The surface features of the ESM samples containing MPs were studied using a field emission scanning electron microscope (FESEM) and compared with blank ESM images. The findings indicated that the MPs were attached to the ESM fibres and had similar shapes and sizes as the control MPs. The fibre diameters of the MPs samples were assessed using Fiji-ImageJ software, and no significant changes were observed compared to the blank ESM. The surface roughness, Ra values, of the MPs incorporated ESM samples were evaluated and compared to the blank ESM, and no significant changes were found. Fourier transform infrared (FTIR) spectroscopy was used to analyse the chemical Composition of the bandage, and the spectra showed that the FBM were effectively incorporated into the ESM. The FTIR spectra identified the major peaks of the natural ESM and the PLGA polymer in the bandage. The bandage was transparent but had a reduced visibility in the waterproof test card method. The bandage achieved sustained drug release up to 10 days and was found to be biocompatible and non-toxic in a chorioallantoic membrane (CAM) assay. Overall, the drug-incorporated PLGA MPs-ESM bandage has great potential for treating chronic wounds.

Type: Article
Title: A drug-incorporated-microparticle-eggshell-membrane-scaffold (DIMES) dressing: a novel biomaterial for localised wound regeneration
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ejpb.2023.07.007
Publisher version: https://doi.org/10.1016/j.ejpb.2023.07.007
Language: English
Additional information: © 2023 The Author(s). Published by Elsevier B.V. https://creativecommons.org/licenses/by/4.0/
Keywords: Scaffold, tissue engineering, collagen, drug-release, skin, biomaterials, cell culture, pharmaceutics
UCL classification: UCL
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 Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute > Biomaterials and Tissue Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10173528
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