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  • Title: Inhibition of growth of Trichophyton rubrum by the myeloperoxidase-hydrogen peroxide-chloride system.
    Author: MacCarthy KG, Dahl MV.
    Journal: J Invest Dermatol; 1989 Apr; 92(4):639-41. PubMed ID: 2539415.
    Abstract:
    The myeloperoxidase-hydrogen peroxide-chloride (MPO-H2O2-Cl) system is an antimicrobial system of polymorphonuclear leukocytes. We demonstrated that the MPO-H2O2-Cl system is fungicidal for Trichophyton rubrum. Fungal growth of a synchronous cell culture of T. rubrum germlings was assayed by measuring the uptake of tritiated N-acetyl-D-glucosamine, and the viability of the fungi was assayed by counting colony-forming units. Cytotoxins produced by the interaction of myeloperoxidase with hydrogen peroxide and chloride ion were fungicidal for T. rubrum. Growth inhibition was abolished in the presence of catalase or L-methionine. Polymorphonuclear leukocytes through the MPO-H2O2-Cl system may prevent invasion and sepsis by dermatophytes even in the absence of specific immunity.
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