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dc.contributor.authorPiksa, Marta
dc.contributor.authorFortuna, Wojciech
dc.contributor.authorLian, Cheng
dc.contributor.authorGacka, Małgorzata
dc.contributor.authorSamuel, Ifor D. W.
dc.contributor.authorMatczyszyn, Katarzyna
dc.contributor.authorPawlik, Krzysztof J.
dc.identifier.citationPiksa , M , Fortuna , W , Lian , C , Gacka , M , Samuel , I D W , Matczyszyn , K & Pawlik , K J 2023 , ' Treatment of antibiotic-resistant bacteria colonizing diabetic foot ulcers by OLED induced antimicrobial photodynamic therapy ' , Scientific Reports , vol. 13 .
dc.identifier.otherJisc: 1299318
dc.identifier.otherpublisher-id: s41598-023-39363-4
dc.identifier.othermanuscript: 39363
dc.descriptionKM, KJP and IDWS were supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant (Agreement N°764837) and NCN Opus Grant No. 2019/35/B/ST4/03280.en
dc.description.abstractWe evaluate the efficacy of antimicrobial Photodynamic Therapy (APDT) for inactivating a variety of antibiotic-resistant clinical strains from diabetic foot ulcers. Here we are focused on APDT based on organic light-emitting diodes (OLED). The wound swabs from ten patients diagnosed with diabetic foot ulcers were collected and 32 clinical strains comprising 22 bacterial species were obtained. The isolated strains were identified with the use of mass spectrometry coupled with a protein profile database and tested for antibiotic susceptibility. 74% of isolated bacterial strains exhibited adaptive antibiotic resistance to at least one antibiotic. All strains were subjected to the APDT procedure using an OLED as a light source and 16 µM methylene blue as a photosensitizer. APDT using the OLED led to a large reduction in all cases. For pathogenic bacteria, the reduction ranged from 1.1-log to > 8 log (Klebsiella aerogenes, Enterobacter cloaca, Staphylococcus hominis) even for high antibiotic resistance (MRSA 5-log reduction). Opportunistic bacteria showed a range from 0.4-log reduction for Citrobacter koseri to > 8 log reduction for Kocuria rhizophila. These results show that OLED-driven APDT is effective against pathogens and opportunistic bacteria regardless of drug resistance.
dc.relation.ispartofScientific Reportsen
dc.subjectSDG 3 - Good Health and Well-beingen
dc.titleTreatment of antibiotic-resistant bacteria colonizing diabetic foot ulcers by OLED induced antimicrobial photodynamic therapyen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Organic Semiconductor Centreen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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