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Embryo lethality and teratogenicity of 2-Bromopropane in the Sprague-Dawley rat  

Kim, Jong-Choon (College of Veterinary Medicine, Chonnam National University)
Oh, Ki-Seok (College of Veterinary Medicine, Chonnam National University)
Shin, Dong-Ho (College of Veterinary Medicine, Chonnam National University)
Kim, Sung-Ho (College of Veterinary Medicine, Chonnam National University)
Kim, Hyeon-Yeong (Industrial Chemicals Research Center, Industrial Safety and Health Research Institute, Korea Industrial Safety Corporation)
Yun, Hyo-In (College of Veterinary Medicine, Chungnam National University)
Jiang, Cheng-Zhe (Korea Institute of Toxicology, KRICT)
Heo, Jeong-Doo (Korea Institute of Toxicology, KRICT)
Chung, Moon-Koo (Korea Institute of Toxicology, KRICT)
Publication Information
Korean Journal of Veterinary Research / v.43, no.4, 2003 , pp. 657-666 More about this Journal
Abstract
The present study was undertaken to evaluate the potential adverse effects of 2-BP on pregnant dams and embryo-fetal development after maternal exposure during the gestational days (GD) 6 through 19 in Sprague-Dawley rats. The test chemical was administered subcutaneously to pregnant rats at dose levels of 0, 375, 750 and 1250 mg/kg/day. During the test period, clinical signs, mortality, body weights and food consumption were examined. All dams were subjected to caesarean section on GD 20 and their fetuses were examined for external, visceral and skeletal abnormalities. At above 750 mg/kg, toxic effects including signs of toxicity, suppressed body weight, decreased gravid uterine weight and reduced food intake were observed in pregnant dams. An increase in the fetal deaths, a decrease in the litter size, a reduction in the fetal body weight and an increase in the incidence of fetal morphological alterations were also found. There were no adverse effects on either pregnant dams or embryo-fetal development at a dose level of 375 mg/kg. These results suggest that a 14-day subcutaneous dose of 2-BP is embryolethal and teratogenic at above 750 mg/kg/day in pregnant rats. In the present experimental condition, the no-observed-adverse-effect level of 2-BP is considered to be 375 mg/kg/day for dams and embryo-fetuses, respectively.
Keywords
2-bromopropane; maternal toxicity; developmental toxicity; teratogenicity; rats;
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