title: Hyperoxia and hypoxia in pregnancy: simple experimental manipulation alters the incidence of cleft lip and palate in CL/Fr mice.
abstract: This paper describes alterations in the incidence of cleft lip and palate in CL/Fr mice subsequent to experimental manipulation of maternal respiratory oxygen levels during a critical period of pregnancy. Only a few previous studies have shown that the incidence of some "genetically determined" malformations in mammals can be decreased by environmental procedures. In addition to demonstrating a decreased incidence of cleft lip and palate subsequent to maternal hyperoxia on gestational days 10 and 11 in a genetically susceptible strain, the results of the present study show that hypoxia at this time increases the incidence of cleft lip and palate.
mesh_terms: D000818:Animals; D002971:Cleft Lip / Q000517:prevention & control*; D002972:Cleft Palate / Q000517:prevention & control*; D005260:Female; D005865:Gestational Age; D000860:Hypoxia / Q000150:complications; D008431:Maternal-Fetal Exchange; D051379:Mice; D010100:Oxygen / Q000627:therapeutic use*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular
chemical_list: D010100:Oxygen