LET dependence of the formation of oxidative damage 8-hydroxy-2'-deoxyguanosine(8-OHdG)in 2'-deoxyguanosine aqueous solution irradiated with heavy ions

Autor: Hirayama, Ryoichi, Furusawa, Yoshiya, Murayama, Chieko, Kusano, Yohsuke, Ito, Atsushi
Jazyk: angličtina
Rok vydání: 2009
Zdroj: Radiation Physics and Chemistry. 78(12):1207-1210
ISSN: 0969-806X
Popis: To evaluate the contribution of indirect action mediated by OH radicals in biological effects of high LET radiations, we examined the production of 8-hydroxy-20-deoxyguanosine (8-OHdG) in 20-deoxyguanosine aqueous solution using various ion species with an LET range from 20 to 300 keV/mm. The 8-OHdG yield decreased with increasing LET. In the hypoxic irradiation condition, the yield showed constant or rather increasing tendency above about 100 keV/mm, which is consistent with an oxygen-in-the-track hypothesis to explain the diminishment of oxygen effect.
Databáze: OpenAIRE