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Combination of photodynamic antimicrobial chemotherapy and ciprofloxacin to combat S. aureus and E. coli resistant biofilms
- Source :
- Photodiagnosis and Photodynamic Therapy. 42:103142
- Publication Year :
- 2023
- Publisher :
- Elsevier BV, 2023.
-
Abstract
- Photodynamic antimicrobial chemotherapy (PACT) coupled with an antibiotic, ciprofloxacin (CIP), was investigated using two indium metallated cationic photosensitizers, a porphyrin (1) and a phthalocyanine (2). Applying PACT followed by the antibiotic treatment led to a remarkable reduction in the biofilm cell survival of two antibiotic-resistant bacterial strains, S. aureus (Gram + bacteria) and E. coli (Gram- bacteria). Treating both bacteria strains with PACT alone showed no significant activity at 32 µM with 15 min irradiation, while CIP alone exhibited a minimum biofilm inhibition concentration (MBIC) at 4 and 8 µg/mL on S. aureus and E. coli respectively following 24 h incubation. The combined treatment resulted in the complete eradication of the matured biofilms with high log
Details
- ISSN :
- 15721000
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Photodiagnosis and Photodynamic Therapy
- Accession number :
- edsair.doi.dedup.....8b8e65105f7ea09c348aac9940edc3bd