Variation of selected genotoxic and epigenetic markers due to therapeutic exposure to PAHs and ultraviolet radiation
| Autor: | Pavel Borsky, Ctirad Andrys, Martin Beranek, Zdeněk Fiala, Jan Kremlacek, Lenka Borska, Marcela Chmelarova, K. Hamakova, Vladimir Palicka, Andrea Malkova |
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| Rok vydání: | 2020 |
| Předmět: |
Economics and Econometrics
Chemistry Ultraviolet Rays Forestry Methylation Goeckerman therapy medicine.disease Molecular biology Epigenesis Genetic chemistry.chemical_compound CpG site Psoriasis Area and Severity Index Psoriasis DNA methylation Materials Chemistry Media Technology medicine Humans Ultraviolet Therapy Epigenetics Polycyclic Aromatic Hydrocarbons DNA DNA Damage |
| Zdroj: | Bratislavske lekarske listy. 121(8) |
| ISSN: | 0006-9248 |
| Popis: | BACKGROUND Goeckerman therapy (GT) of psoriasis involves dermal application of crude coal tar containing polycyclic aromatic hydrocarbons (PAHs) and exposure to ultraviolet radiation (UVR). Little is known about GT influence on DNA epigenetics. OBJECTIVE The study aim was to discover epigenetic mechanisms altered by the exposure related to the GT of psoriasis. METHODS Observed group of patients with plaque psoriasis (n = 23) was treated by GT with 3 % CCT. Before and after GT, we analyzed the levels of benzo[a]pyrene-7,8-diol-9,10-epoxide-DNA adducts (BPDE-DNA), p53 protein in serum, 5-methylcytosine (5-mC, global DNA methylation), and methylation in selected CpG sites of p53 gene. RESULTS We found a significant increase in the levels of BPDE-DNA (p < 0.01) and serum levels of p53 protein (p < 0.01) after GT, and an insignificant decrease in the percentage of 5-mC in peripheral blood DNA. Methylation of p53 CpG sites was affected neither by psoriasis nor by GT. The study confirmed good effectiveness of GT (significantly reduced psoriasis area and severity index; p < 0.001). CONCLUSION Our findings indicate that there is a significantly increased genotoxic hazard related to the exposure of PAHs and UV radiation after GT of psoriasis. However, global DNA methylation and p53 gene methylation evade the effect of GT, as they remained unchanged (Tab. 4, Fig. 3, Ref. 50). |
| Databáze: | OpenAIRE |
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