Treatment of human lymphocytes in vitro with trimethylpsoralen or 8-methoxypsoralen and UVA irradiation (PUVA) induced chromosome damage, mainly constrictions and gaps, but also breaks and exchanges, and increased the frequency of sister chromatid exchange (SCE). The localization of the chromosome a
Psoralen/UVA treatment and chromosomes
✍ Scribed by Anton Brøgger; Helga Waksvik; Per Thune
- Book ID
- 104780053
- Publisher
- Springer-Verlag
- Year
- 1978
- Tongue
- English
- Weight
- 450 KB
- Volume
- 261
- Category
- Article
- ISSN
- 0340-3696
No coin nor oath required. For personal study only.
✦ Synopsis
Five psoriasis patients treated with 8-methoxypsoralen and UVA (PUVA) were studied by lymphocyte cultures at the 1st, 5th, 10th and 20th treatment and at a maintenance treatment 6 months later. Abnormal amounts of chromosome aberrations were not found, and the frequency of sister chromatid exchange (examined at the last treatment) was not increased. In vitro experiments with nanogram doses of psoralen (similar to plasma levels in patients) showed no increase in chromosome aberration or SCE freqency. The results indicate that therapeutic doses of PUVA have no clastogenic effect.
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