Phototoxicity of Protoporphhyrin IX, Diarginine Diprotoporphyrinate and N,N‐Deiphenylalanyl Protoporphyrin Toward Human Fibroblasts and ketratinocytes In vitro: Effect of 5‐Methoxypsoralen†;
Abstract:The phototoxicity of two new porphyrin photosensitizers, diarginine diprotoporphyrinate (PP(Arg)2) and N,N‐diphenylalanyl protoporphyrin (PP(Phe)2), and the synergistic effect of 5‐methaoxyposralen (5‐MOP) have been studied in comparison with that of protoporphyrin IX (PPIX). Under ultraviolet A (UV‐A) irradiation (λ= 365 nm), the phototoxicity of the porphyrins toward cultured human fibroblasts and keratino‐cytes decerases in the order: PPIX > PP(Arg)2 > PP(Phe)2. A synergistic efect of 5‐MOP on the phototoxi… Show more
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