A study of photobactericidal activity in the phenothiazinium series

作者：MARK S. WAINWRIGHT, David Andrew Phoenix, J. Marland, David R A Wareing, F. J. Bolton · 发表于：FEMS Immunology & Medical Microbiology · 年份：1997 · DOI：10.1111/j.1574-695x.1997.tb01074.x · 被引用次数：161 · 研究领域：Photodynamic Therapy Research Studies、Phenothiazines and Benzothiazines Synthesis and Activities、bioluminescence and chemiluminescence research

The photodynamic antibacterial properties of a closely related series of commercially available phenothiazinium dyes were tested against a range of pathogenic strains of Gram-positive (Staphylococcus aureus, Enterococcus faecalis, Bacillus cereus) and Gram-negative organisms (Escherichia coli, Pseudomonas aeruginosa). The photosensitisers were illuminated using a non-laser light source at a fluence of 1.75 mW cm-2 and this resulted in the enhancement of antibacterial activity in liquid culture. In several cases, illumination resulted in considerable decreases in the minimum lethal concentrations required, giving up to 100-fold increases in bactericidal activity.