title: Effects of Bacillus thuringiensis toxin on hepatic lipid peroxidation and free-radical scavengers in rats given alpha-tocopherol or acetylsalicylate.
abstract: The effect of Dipel (D), a Bacillus thuringiensis-based bioinsecticide, on hepatic antioxidant enzyme activities and lipid peroxidation in rat liver was investigated. Administration of D in a dose of 1 mg/100 g body mass for 4 successive days increased the activities of glutathione peroxidase (GPx), glutathione reductase (GR) and the level of malondialdehyde (MDA) in rat hepatocytes. The activity of superoxide dismutase (SOD) and glutathione (GSH) level were decreased. Administration of D in rats pretreated with alpha-tocopherol (alphaT) or acetylsalicylic acid (ASA) decreased the activities of GPx, GR and MDA levels, while the GSH level was increased compared with rats treated with D alone. The SOD activity was increased in rats pretreated with alphaT before D, but decreased on pretreatment with ASA, compared with rats treated with D alone. The results indicated that D induced oxidative stress in rat liver that has been protected by prior administration of alphaT or ASA.
authors.affiliation: Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt. nshaban2001@yahoo.co.uk
authors.forename: Nadia Z
authors.initials: NZ
authors.lastname: Shaban
authors.forename: Madiha H
authors.initials: MH
authors.lastname: Helmy
authors.forename: Mohamed A R
authors.initials: MA
authors.lastname: El-Kersh
authors.forename: Bothaina F
authors.initials: BF
authors.lastname: Mahmoud
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D001241:Aspirin / Q000031:analogs & derivatives / Q000494:pharmacology*; D001413:Bacillus thuringiensis / Q000737:chemistry; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000633:toxicity*; D001427:Bacterial Toxins; D004731:Endotoxins / Q000633:toxicity*; D016166:Free Radical Scavengers / Q000494:pharmacology; D005978:Glutathione / Q000032:analysis / Q000378:metabolism; D005979:Glutathione Peroxidase / Q000378:metabolism; D005980:Glutathione Reductase / Q000378:metabolism; D006460:Hemolysin Proteins; D015227:Lipid Peroxidation / Q000187:drug effects*; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D008315:Malondialdehyde / Q000032:analysis / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D012643:Selenium / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D024502:alpha-Tocopherol / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004731:Endotoxins; D016166:Free Radical Scavengers; D006460:Hemolysin Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis; D008315:Malondialdehyde; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase; D005978:Glutathione; D024502:alpha-Tocopherol; D012643:Selenium; D001241:Aspirin