title: Toxicological evaluation of subchronic exposure to diphenyl diselenide in rats.
abstract: The aim of this study was to investigate the effects caused by subchronic exposure to diphenyl diselenide in rats. Adult Wistar rats were exposed to diphenyl diselenide (5-300 micromol kg(-1), subcutaneously) once a day for 14 days. The subchronic administration of diphenyl diselenide at a dose of 300 micromol kg(-1) significantly increased aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities in plasma. Conversely, this exposure did not alter lactate dehydrogenase (LDH) activity, urea and creatinine levels in plasma. The activity of delta-aminolevulinate dehydratase (delta-ALA-D) from liver and kidney was inhibited by high dosages of diphenyl diselenide. Diphenyl diselenide did not alter renal Na(+)/K(+)ATPase. A decline in body weight gain was associated with a decrease in food consumption in rats treated with 100 or 300 micromol kg(-1) diphenyl diselenide. At these dosages (100 and 300 micromol kg(-1)), diphenyl diselenide did not cause histological alterations in the liver of rats. Taken together, these results demonstrated that subchronic exposure to diphenyl diselenide at high doses induced minor toxicological effects.
authors.affiliation: Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil.
authors.forename: Flavia Carla
authors.initials: FC
authors.lastname: Meotti
authors.forename: Vanessa Corralo
authors.initials: VC
authors.lastname: Borges
authors.forename: Juliano
authors.initials: J
authors.lastname: Perottoni
authors.forename: Cristina Wayne
authors.initials: CW
authors.lastname: Nogueira
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood; D001555:Benzene Derivatives / Q000633:toxicity*; D001835:Body Weight / Q000187:drug effects; D056486:Chemical and Drug Induced Liver Injury / Q000201:enzymology / Q000473:pathology; D003404:Creatinine / Q000097:blood; D004435:Eating / Q000187:drug effects; D007770:L-Lactate Dehydrogenase / Q000097:blood; D008099:Liver / Q000473:pathology; D008297:Male; D016566:Organoselenium Compounds / Q000633:toxicity*; D000623:Porphobilinogen Synthase / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D000254:Sodium-Potassium-Exchanging ATPase / Q000378:metabolism; D014508:Urea / Q000097:blood
chemical_list: D001555:Benzene Derivatives; D016566:Organoselenium Compounds; C061132:diphenyldiselenide; D014508:Urea; D003404:Creatinine; D007770:L-Lactate Dehydrogenase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D000623:Porphobilinogen Synthase; D000254:Sodium-Potassium-Exchanging ATPase