title: Methyl isocyanate: reproductive and developmental toxicology studies in Swiss mice.
abstract: Studies were conducted in Swiss (CD-1) mice to evaluate the potential of inhaled vapors of methyl isocyanate (MIC) to affect reproduction and development. Inhaled MIC at concentrations of 0, 1, or 3 ppm, 6 hr per day during days 14 through 17 of gestation caused a significant increase in the number of dead fetuses at birth and caused a significant decrease in neonatal survival during lactation. In contrast, exposure of male and female mice to 1 or 3 ppm given 6 hr per day for 4 consecutive days had no effect on reproduction during mating trials conducted 1, 8, and 17 weeks after the exposure period. Similarly, there was no evidence of a dominant lethal effect in exposed male mice.
mesh_terms: D000818:Animals; D003485:Cyanates / Q000008:administration & dosage / Q000633:toxicity*; D005260:Female; D005313:Fetal Death / Q000139:chemically induced; D005799:Genes, Dominant / Q000187:drug effects; D005804:Genes, Lethal / Q000187:drug effects; D017953:Isocyanates; D008297:Male; D008431:Maternal-Fetal Exchange; D051379:Mice; D011247:Pregnancy; D012098:Reproduction / Q000187:drug effects*; D013997:Time Factors
chemical_list: D003485:Cyanates; D017953:Isocyanates; C008461:methyl isocyanate