title: Fetal cartilage malformation by intravenous administration of indium trichloride to pregnant rats.
abstract: The effects of indium on bone and cartilage development in rat fetuses were examined. Pregnant Sprague Dawley (SD) rats were treated with indium trichloride (0.1, 0.2, or 0.3 mg/kg) by single intravenous administration on Day 10 of gestation, and their fetuses were examined on Day 21. Half of each litter was prepared for skeletal examinations using a skeletal double-staining technique to allow evaluation of cartilage as well as bone. Dose-related increased incidences of external and skeletal fetal malformations occurred at doses of 0.2 mg/kg or more. The incidences of cartilage malformations in the vertebrae, ribs, and forepaw phalanges were significantly increased at 0.3 mg/kg. Malformations of the axial bone were accompanied by cartilage malformations. It was concluded from these results that indium produced cartilage malformations, that were considered to be the underlying cause for the majority of fetal skeletal malformations observed in rats in this study.
authors.affiliation: Pharmaceuticals R and D Division, Asahi Kasei Pharma Corporation, Japan.
authors.forename: Mikio
authors.initials: M
authors.lastname: Nakajima
authors.forename: Hiroki
authors.initials: H
authors.lastname: Takahashi
authors.forename: Ken
authors.initials: K
authors.lastname: Nakazawa
authors.forename: Makoto
authors.initials: M
authors.lastname: Usami
mesh_terms: D000014:Abnormalities, Drug-Induced; D000818:Animals; D001835:Body Weight / Q000187:drug effects; D001842:Bone and Bones / Q000002:abnormalities / Q000187:drug effects; D002356:Cartilage / Q000002:abnormalities / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004622:Embryo, Mammalian / Q000002:abnormalities / Q000187:drug effects*; D047108:Embryonic Development / Q000187:drug effects; D005260:Female; D005313:Fetal Death / Q000139:chemically induced; D047109:Fetal Development / Q000187:drug effects; D007204:Indium / Q000633:toxicity*; D007275:Injections, Intravenous; D011247:Pregnancy; D051381:Rats; D017207:Rats, Sprague-Dawley; D013723:Teratogens / Q000633:toxicity*; D015430:Weight Gain / Q000187:drug effects
chemical_list: D013723:Teratogens; D007204:Indium; C020758:indium trichloride