title: Toluene inhalation induced 8-hydroxy-2'-deoxyguanosine formation as the peroxidative degeneration in rat organs.
abstract: The effect of toluene inhalation on oxidative damage in rat organs was examined. Male Wistar rats was inhaled toluene (1500 ppm for 4 h a day) for 7 days. Quantitatively and immunohistochemically, oxidative DNA damage, lipid peroxide (LPO) and superoxide dismutase (SOD) were examined. As a marker of the oxidative DNA damage, 8-hydroxy-2'-deoxyguanosine (8-OH-dG) immunoreactivity increased in the lung, liver and kidney. The amount of 8-OH-dG also increased in liver and kidney significantly. In the testis, the amount of 8-H-dG did not increase, however 8-OH-dG immunoreactivity enhanced in the spermatogonia. SOD immunoreactivity increased in the lung, liver and kidney. However, 4-hydroxy-nonenal immunoreactivity and the amount of LPO did not change in each organ. Thus, oxidative damage by toluene is mainly DNA damage, especially, the oxidative DNA damage observed in the lung, liver and kidney for the increase of the immunoreactivity and amount of 8-OH-dG.
authors.affiliation: Department of Legal Medicine, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto, Tokushima 770-8503, Japan. tokunaga@basic.med.tokushima-u.ac.jp
authors.forename: Itsuo
authors.initials: I
authors.lastname: Tokunaga
authors.forename: Takako
authors.initials: T
authors.lastname: Gotohda
authors.forename: Akiko
authors.initials: A
authors.lastname: Ishigami
authors.forename: Osamu
authors.initials: O
authors.lastname: Kitamura
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Kubo
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D000818:Animals; D004249:DNA Damage; D003849:Deoxyguanosine / Q000031:analogs & derivatives* / Q000096:biosynthesis*; D007150:Immunohistochemistry; D008054:Lipid Peroxides / Q000378:metabolism*; D008297:Male; D009928:Organ Specificity; D051381:Rats; D017208:Rats, Wistar; D012997:Solvents / Q000008:administration & dosage / Q000633:toxicity*; D013482:Superoxide Dismutase / Q000378:metabolism*; D014050:Toluene / Q000008:administration & dosage / Q000633:toxicity*
chemical_list: D008054:Lipid Peroxides; D012997:Solvents; D014050:Toluene; D000080242:8-Hydroxy-2'-Deoxyguanosine; D013482:Superoxide Dismutase; D003849:Deoxyguanosine