The action of photosensitizers and serum in a bactericidal process. II. The effects of dyes: hypericin, eosin Y and saphranine O

• Published in: Polish journal of microbiology 2005, Vol.54 (4), p.323-330
• Main Authors: Jankowski, Andrzej, Jankowski, Stanisław, Mirończyk, Agnieszka, Niedbach, Joanna
• Format: Article
• Language: English
• Subjects: Bacillus subtilis - drug effects; Bacillus subtilis - radiation effects; Bacteria - drug effects; Bacteria - radiation effects; Blood Bactericidal Activity; Coloring Agents - pharmacology; Eosine Yellowish-(YS) - pharmacology; Escherichia coli K12 - drug effects; Escherichia coli K12 - radiation effects; Humans; Hypericin; In Vitro Techniques; Perylene - analogs & derivatives; Perylene - pharmacology; Phenazines - pharmacology; Photobiology; Photosensitizing Agents - pharmacology; Shigella flexneri - drug effects; Shigella flexneri - radiation effects
• ISSN: 1733-1331; 2544-4646

The aim of the present work was to recognize the reasons for differences in the photodynamic action of dyes against various bacterial strains. It is expected that a better understanding of this problem may help in design of new photosensitizers. The sensitivity of 6 various bacterial strains to the photodynamic action of 5 photosensitizers was determined. The hydrophobicity of cell surface and susceptibility of bacteria to the natural defense mechanism of human serum, were estimated. The differences in the photodynamic efficiency of dyes could be contributed to various affinities of cell membrane to dyes, to known details of membrane architecture as well as to different mechanisms of photosensitization.