Without internal affiliation

  • Author: Møller, Peter

    National Research Centre for the Working Environment

  • Author: Wallin, Håkan

    National Research Centre for the Working Environment

  • Author: Dybdahl, Marianne

    National Research Centre for the Working Environment

  • Author: Frentz, Gerda

    University of Copenhagen

  • Author: Nexø, Bjørn A.

    National Research Centre for the Working Environment

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We have investigated the formation of strand-breaks following UVC irradiation in lymphocytes from psoriasis patients with or without basal cell carcinoma (BCC). Isolated lymphocytes were irradiated with UVC light at a dose of 3.6 J/m2, and the level of DNA strand-breaks were measured 25 min after the irradiation by the alkaline comet assay. The generation of strand-breaks following UVC irradiation indicates DNA-repair-mediated incisions, as UVC light does not generate strand-breaks per se. We found that psoriasis patients with BCC had more DNA-repair incisions than non-cancer patients. The incision level correlated to two polymorphisms of the XPD gene. At present, it is not clear if the association is a primary effect that is related to differences of the XPD protein. Genes encoding for other repair proteins, namely XRCC1, ERCC1, and LIG1 are located close to the XPD gene, and it is possible that the association is due to a cosegregation with a polymorphism in one of these genes. Copyright (C) 2000 Elsevier Science Ireland Ltd.

Original languageEnglish
JournalCancer Letters
Volume151
Issue number2
Pages (from-to)187-192
Number of pages6
ISSN0304-3835
DOIs
StatePublished - 14 Apr 2000
Externally publishedYes
CitationsWeb of Science® Times Cited: 33

    Research areas

  • Basal cell carcinoma, Comet assay, DNA-repair activity, Psoriasis, XPD gene
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