title: Roles of reactive oxygen species and antioxidant enzymes in murine daunomycin-induced nephropathy.
abstract: We evaluated the roles of reactive oxygen species and intrinsic antioxidant enzymes in the development of daunomycin (DM)-induced nephropathy in mice. A single dose of DM (20 mg/kg intravenously) induced proteinuria by day 7 and the nephrotic syndrome by day 14 in DM-sensitive strain (A/J) but not in DM-resistant strain (C57BL/6J) (B6). Renal cortical lipid peroxide levels in the A/J mice significantly increased at days 2, 4, and 7 after DM injection, whereas no increase was observed in the B6 mice. The resistance to DM in B6 mice was associated with higher activities in renal cortical superoxide dismutase and glutathione peroxidase. The administration of superoxide dismutase or of dimethylthiourea significantly suppressed the DM-induced proteinuria in the A/J mice. Four days of superoxide dismutase or dimethylthiourea administration suppressed the proteinuria. These findings suggested that murine DM-nephropathy appeared to be mediated by reactive oxygen species and that intrinsic antioxidant enzyme activities may play an important role in the susceptibility to DM-induced nephropathy in mice.
authors.affiliation: First Department of Medicine and Institute for Experimental Animals, Hamamatsu University School of Medicine and Hamamatsu College, Shizuoka University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Ohtake
authors.forename: M
authors.initials: M
authors.lastname: Kimura
authors.forename: M
authors.initials: M
authors.lastname: Nishimura
authors.forename: A
authors.initials: A
authors.lastname: Hishida
mesh_terms: D000419:Albuminuria / Q000188:drug therapy; D000818:Animals; D002374:Catalase / Q000378:metabolism*; D003630:Daunorubicin / Q000737:chemistry; D016166:Free Radical Scavengers / Q000494:pharmacology; D005978:Glutathione / Q000032:analysis; D005979:Glutathione Peroxidase / Q000378:metabolism*; D007668:Kidney / Q000737:chemistry / Q000201:enzymology; D007674:Kidney Diseases / Q000139:chemically induced / Q000662:veterinary*; D008054:Lipid Peroxides / Q000378:metabolism; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009404:Nephrotic Syndrome / Q000139:chemically induced / Q000662:veterinary*; D017382:Reactive Oxygen Species / Q000502:physiology*; D012709:Serum Albumin; D013482:Superoxide Dismutase / Q000378:metabolism* / Q000494:pharmacology; D013890:Thiourea / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D016166:Free Radical Scavengers; D008054:Lipid Peroxides; D017382:Reactive Oxygen Species; D012709:Serum Albumin; C038983:1,3-dimethylthiourea; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005978:Glutathione; D013890:Thiourea; D003630:Daunorubicin