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Hydrogen peroxide and hydroxyl free radical production by hematoporphyrin derivative, ascorbate and light
Journal article   Peer reviewed

Hydrogen peroxide and hydroxyl free radical production by hematoporphyrin derivative, ascorbate and light

GARRY R BUETTNER and MICHAEL J NEED
Cancer letters, Vol.25(3), pp.297-304
01/1985
DOI: 10.1016/S0304-3835(15)30009-4
PMID: 2982479

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Abstract

Photofrin II, a commercial preparation of a hematoporphyrin derivative containing a high proportion of the active di-hematoporphyrin ether, was found to convert oxygen to hydrogen peroxide and hydroxyl free radicals in the presence of ascorbate and light. In addition, a light-dependent increase in the ascorbate free radical concentration was observed in hematoporphyrin derivative/ascorbate solutions with subsequent oxidation of ascorbate.

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