title: Parachlorophenylalanine exacerbates oxidative stress induced by gentamicin in rats.
abstract: The present work studies the effect of parachlorophenylalanine (PCPA, 200 mg/kg intraperitoneally/48 hr for 7 days) on the oxidative stress and nephropathy induced by gentamicin (80 mg/kg intraperitoneally/daily for 7 days) in Wistar rats. The effect of PCPA on lipid peroxidation products and reduced glutathione content in renal and brain tissue, as well as on 5HT content in brain was assessed. Catalase and superoxide dismutase activities were determined in brain tissue. Blood urea nitrogen and creatinine in plasma and total protein content in urine were also measured. Gentamicin caused significant increases in proteinuria, non-protein nitrogen compounds and lipid peroxidation markers, together with decreases in both reduced glutathione content in renal and brain tissue and enzymatic activities in brain homogenates. PCPA harnessed the effect of gentamicin in the brain and the kidney, while PCPA alone induced brain oxidative stress. These results support the prooxidant action of PCPA in brain tissue and its capacity to exacerbate the oxidative stress and renal dysfunction induced by gentamicin, as well as the possible antioxidant property of serotonin.
authors.affiliation: Department of Biochemistry and Molecular Biology, School of Medicine, University of Cordoba, Cordoba, Spain.
authors.forename: Juan R
authors.initials: JR
authors.lastname: Muñoz-Castañeda
authors.forename: Pedro
authors.initials: P
authors.lastname: Montilla
authors.forename: Maria C
authors.initials: MC
authors.lastname: Muñoz
authors.forename: Immaculada
authors.initials: I
authors.lastname: Bujalance
authors.forename: Jordi
authors.initials: J
authors.lastname: Muntané
authors.forename: Isaac
authors.initials: I
authors.lastname: Túnez
mesh_terms: D000818:Animals; D001806:Blood Urea Nitrogen; D001921:Brain / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D001923:Brain Chemistry; D002374:Catalase / Q000378:metabolism; D003404:Creatinine / Q000097:blood; D004357:Drug Synergism; D010134:Fenclonine / Q000008:administration & dosage / Q000494:pharmacology*; D005839:Gentamicins; D005978:Glutathione / Q000378:metabolism; D007668:Kidney / Q000187:drug effects* / Q000378:metabolism; D007674:Kidney Diseases / Q000139:chemically induced / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects*; D011507:Proteinuria; D051381:Rats; D017208:Rats, Wistar; D012701:Serotonin / Q000378:metabolism; D012702:Serotonin Antagonists / Q000008:administration & dosage / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D005839:Gentamicins; D012702:Serotonin Antagonists; D012701:Serotonin; D008315:Malondialdehyde; D003404:Creatinine; D002374:Catalase; D013482:Superoxide Dismutase; D005978:Glutathione; D010134:Fenclonine