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Mutagenesis, Vol. 18, No. 2, 139-143, March 2003
© 2003 UK Environmental Mutagen Society/Oxford University Press

A study on the effects of seasonal solar radiation on exposed populations

Smaragdi I. Tsilimigaki1,2, Niki Messini-Nikolaki2, Maria Kanariou3 and Stylianos M. Piperakis1,4

1 DNA Repair Laboratory, Institute of Biology, National Center for Scientific Research ‘Demokritos’, 153 10 Aghia Paraskevi, Athens, Greece, 2 Department of Cell Biology, School of Biology, University of Athens, Greece and 3 Department of Immunology and Histocompatibility, ‘Aghia Sofia’ Hospital, Athens, Greece

In the present study the effects of seasonal solar radiation (summer and winter) on exposed populations of two different age groups (20–25 and 40–55 years old) were investigated. In addition, the effects of external factors, such as hydrogen peroxide (H2O2) and {gamma}-irradiation, as well as the repair efficiency of human lymphocytes from these populations, was also evaluated. Our results show that the amount of DNA damage appears to be influenced by the exposure to solar radiation, with the summer exposure being the most damaging. Age was also found to be a significant factor, with the older population being more susceptible to solar radiation than the younger one. Season does not appear to affect the sensitivity to external DNA-damaging agents, while age does. Age was also found to have an effect on the DNA repair capacity of the examined populations.

4 To whom correspondence should be addressed. Tel: +30 211 6503626; Fax: +30 211 8075978; Email: piper{at}mail.demokritos.gr


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