The paper presents a prospective cohort study. Observed group was formed of children with plaque psoriasis (n=19) treated by Goeckerman therapy (GT). The study describes adverse (side) effects associated with application of GT (combined exposure of 3% crude coal tar ointment and UV radiation). After GT we found significantly increased markers of oxidative stress (8-hydroxy-2'-deoxyguanosine, 8-hydroxyguanosine, and 8-hydroxyguanine), significantly increased levels of benzo[a]pyrene-7,8-diol-9,10-epoxide (BPDE) DNA adducts (BPDE-DNA), and significantly increased levels of total number of chromosomal aberrations in peripheral lymphocytes. We found significant relationship between (1) time of UV exposure and total number of aberrated cells and (2) daily topical application of 3% crude coal tar ointment (% of body surface) and level of BPDE-DNA adducts. The findings indicated increased hazard of oxidative stress and genotoxic effects related to the treatment. However, it must be noted that the oxidized guanine species and BPDE-DNA adducts also reflect individual variations in metabolic enzyme activity (different extent of bioactivation of benzo[a]pyrene to BPDE) and overall efficiency of DNA/RNA repair system. The study confirmed good effectiveness of the GT (significantly decreased PASI score).

Clinic of Dermal and Venereal Diseases University Hospital Hradec Kralove Novy Hradec Kralove 500 05 Hradec Kralove Czech Republic

Institute of Clinical Biochemistry and Diagnosis Faculty of Medicine in Hradec Kralove Charles University Prague 50038 Hradec Kralove Czech Republic

Institute of Clinical Immunology and Allergology Faculty of Medicine in Hradec Kralove Charles University Prague Simkova 870 50038 Hradec Kralove Czech Republic

Institute of Hygiene and Preventive Medicine Charles University Prague Faculty of Medicine in Hradec Kralove 50038 Hradec Kralove Czech Republic

Institute of Pathological Physiology Faculty of Medicine in Hradec Kralove Charles University Prague 50038 Hradec Kralove Czech Republic

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Systemic Inflammation, Oxidative Damage to Nucleic Acids, and Metabolic Syndrome in the Pathogenesis of Psoriasis

Selected Inflammatory and Metabolic Markers in Psoriatic Patients Treated with Goeckerman Therapy