Abstract
It is shown that the efficacy of the photosensitized oxidation of organic substrates in aqueous media (with the oxidation of tryptophan being used as an example) does not depend on adding biologically active dinitrosyl iron complexes (DNICs) with thiol-containing ligands to the reaction medium if it contains Pluronic F127, a poly(ethylene oxide)–poly(propylene oxide)– poly(ethylene oxide) triblock copolymer, at concentrations higher than the critical micelle concentration. Photosensitizer molecules are localized in Pluronic micelles and are shielded from the damaging impact of NO• radicals that form upon the photodegradation of DNIC molecules. Photodynamic therapy (PDT) sessions (the photoinduced necrosis and apoptosis of cells in pathologically altered tissues and the simultaneous initiation of regeneration and repair of the treated tissues due to the photodecomposition of DNIC molecules) thus become fundamentally possible.
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