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- W2312716882 abstract "Hematoporphyrin derivative (Hpd) localizes selectively in malignant and rapidly metabolizing tissues and undergoes a cytotoxic reaction when exposed to light of a specific wavelength. Hpd has been studied extensively with regard to the diagnosis and treatment of tumors but not with regard to bactericidal activity. This investigation assessed the effect of light-activated Hpd on various microorganisms, on human polymorphonuclear leukocytes, and on the interactions of polymorphonuclear leukocytes and bacteria. Light-activated Hpd was 99.9% bactericidal against Staphylococcus aureus, Streptococcus faecalis, Bacteroides fragilis, Streptococcus M-G intermedius, Streptococcus mutans, Peptostreptococcus anaerobius, Peptococcus magnus, and Clostridium perfringens, but did not affect Escherichia coli, Pseudomonas aeruginosa, or Candida albicans. Photoactivation of Hpd rendered 98% of polymorphonuclear leukocytes inviable. Combinations of light-activated Hpd and polymorphonuclear leukocytes had a 4-log (99.99%) bactericidal effect on both intra- and extracellular S. aureus. The ability of Hpd to localize in inflammatory tissues may have therapeutic applications in the treatment of abscesses." @default.
- W2312716882 created "2016-06-24" @default.
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- W2312716882 date "1985-01-01" @default.
- W2312716882 modified "2023-09-26" @default.
- W2312716882 title "Bactericidal Effects of Photoradiation Therapy With Hematoporphyrin Derivative" @default.
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- W2312716882 doi "https://doi.org/10.1093/infdis/151.1.166" @default.
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