Abstract
Combined positron and visible light irradiations in the photodynamical therapy (PDT) applications are analyzed. Objectives and goals of PDT are killing or irreversible oxidative damage of pathogenic cells, or rather their cell walls, cell membranes, peptides, and nucleic acids by photo-activated oxygen of photosentizer injected into the target cell during light irradiation. In this paper, the arguments for involving of lifetime positron annihilation spectroscopy to control of photodamaging cells in the course of the PDT procedure are given on the examples of gram-positive and gram-negative bacteria basing on a brief survey of the literature.
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