title: Acute toxicity of tri-n-butyltin chloride (TBTC) in the Syrian golden hamster.
abstract: The effects of tri-n-butyltin chloride (TBTC) on Syrian golden hamsters were studied. TBTC in single doses of 0, 29.6, 44.4, 66.7, 100 or 150 mg/kg were given to 10 male hamsters in each group and the mortality rates were determined two weeks thereafter. They were 0% (0/10), 0% (0/10), 10% (1/10), 10% (1/10), 30% (3/10) and 70% (7/10) for 0, 29.6, 44.4, 66.7, 100 and 150 mg/kg groups, respectively. In the case of females, seven groups consisting of 10 animals each were given TBTC at doses of 0, 29.6, 44.4, 66.7, 100, 150, or 225 mg/kg. The mortality rates determined two weeks after the TBTC treatment were 0% (0/10), 10% (1/10), 10% (1/10), 0% (0/10), 40% (4/10), 30% (3/10) and 90% (9/10) for 0, 29.6, 44.4, 66.7, 100, and 225 mg/kg groups, respectively. Based on these mortality data, the LD50s via oral administration were determined as 146.9 mg/kg (95% C.I. 111.8-193.3 mg/kg) for the male and 172 mg/kg (95% C.I. 127.2-233.4 mg/kg) for the female. Regarding pathological changes, animals experienced lesions in the bile duct, such as the dilatation of the common bile duct and cholestasis, and/or adhesion of the bile duct to the liver, gallbladder, pancreas and duodenum. In a separate experiment, a single dose of 44.4 mg/kg TBTC was administered orally to 12 male hamsters, then the concentrations of TBTC and its metabolite, di-n-butyltin chloride (DBTC), in the liver were analyzed by means of gas chromatography for 14 days after the treatment. The maximum concentrations of TBTC and DBTC appeared one day after the administration, and decreased rapidly thereafter. The concentration of DBTC was found to be higher than that of TBTC throughout the experimental period.
authors.affiliation: Department of Hygiene and Preventive Medicine, Niigata University School of Medicine.
authors.forename: S
authors.initials: S
authors.lastname: Takagi
authors.forename: H
authors.initials: H
authors.lastname: Mano
authors.forename: M
authors.initials: M
authors.lastname: Tsunoda
authors.forename: H
authors.initials: H
authors.lastname: Nakadaira
authors.forename: K
authors.initials: K
authors.lastname: Endoh
authors.forename: M
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000469:Alkaline Phosphatase / Q000097:blood; D000681:Amylases / Q000097:blood; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood; D001663:Bilirubin / Q000097:blood; D001835:Body Weight / Q000187:drug effects; D006224:Cricetinae; D004305:Dose-Response Relationship, Drug; D005260:Female; D007928:Lethal Dose 50; D008099:Liver / Q000378:metabolism; D008297:Male; D008647:Mesocricetus; D009929:Organ Size / Q000187:drug effects; D012016:Reference Values; D012727:Sex Characteristics; D014220:Trialkyltin Compounds / Q000378:metabolism / Q000493:pharmacokinetics / Q000633:toxicity*; D005723:gamma-Glutamyltransferase / Q000097:blood
chemical_list: D014220:Trialkyltin Compounds; C011559:tributyltin; D005723:gamma-Glutamyltransferase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D000469:Alkaline Phosphatase; D000681:Amylases; D001663:Bilirubin