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- W1561858498 abstract "Lewisite was administered to rats and rabbits by intragastric intubation. Maternal animals were weighed periodically, and, at necropsy (20 dg (days of gestation) in rats and 30 dg in rabbits), were examined for gross lesions of major organs and reproductive performances; live fetuses were weighed and examined for external, internal and skeletal defects. In rats, a dose level of 1.5 mg/kg did not induce toxic or teratogenic responses in maternal animals or their fetuses. At 2.0 mg/kg, 10% maternal mortality, trends in decreased maternal and fetal body weights and a significant reduction in the number of viable fetuses were evident. In rabbit studies, maternal mortality occured in all but one of the lewisite treatment groups and range from 13% to 100% at dose levels of 0.07 and 1.5 mg/kg, respectively. This mortality rate limited the sample size and impaired the detection of statistical significance among treatments. However, at the lowest dose level of the teratology study (0.07 mg/kg), maternal mortality was the only indicator of lewisite toxicity; at the highest dose (0.6 mg/kg), significant findings included 86% maternal mortality, a decrease in maternal body weight gains and an increase in the incidence of fetal stunting, although only a tendency in decreased fetal body weights was observed. These results suggest that maternal mortality was the most important factor in predicting the induction of maternal and fetal effects and, therefore, a ''no observable effect level'' in maternal animals and their fetuses would be between 1.5 and 2.0 mg/kg in rats and less than 0.07 mg/kg in rabbits. Part 2 contains 6 appendices." @default.
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- W1561858498 date "1987-12-31" @default.
- W1561858498 modified "2023-10-03" @default.
- W1561858498 title "Teratology studies of lewisite and sulfur mustard agents: Effects of lewisite in rats and rabbits: Final report: Part 2, Appendices" @default.
- W1561858498 doi "https://doi.org/10.2172/5129991" @default.
- W1561858498 hasPublicationYear "1987" @default.
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