Strain differences in phenobarbital-induced teratogenesis in mice. 1987

R H Finnell, and H E Shields, and S M Taylor, and G F Chernoff

Anticonvulsant drugs are widely prescribed medications known to complicate more than 11,500 pregnancies each year in the United States. Although there is no clear consensus as to the teratogenicity of all of the clinically available compounds, it appears that most anticonvulsant drugs can induce congenital abnormalities in susceptible individuals. In a study designed to examine the role of the genotype on sensitivity to phenobarbital-induced malformations, three highly inbred mouse strains (SWV, C57BL/6J, and LM/Bc) received the drug via chronic oral administration. Phenobarbital was found to have a significant teratogenic potential in mice, resulting in skeletal, cardiac, renal, neural, and urogenital defects in a dose-related fashion. The LM/Bc strain was most sensitive to phenobarbital, with 46.7% of the fetuses exposed to the highest maternal plasma concentrations having malformations. C57BL/6J fetuses were the most resistant strain, with only 28.6% abnormalities.

UI MeSH Term Description Entries
D008098 Litter Size The number of offspring produced at one birth by a viviparous animal. Litter Sizes,Size, Litter,Sizes, Litter
D008815 Mice, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation. Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D010064 Embryo Implantation Endometrial implantation of EMBRYO, MAMMALIAN at the BLASTOCYST stage. Blastocyst Implantation,Decidual Cell Reaction,Implantation, Blastocyst,Nidation,Ovum Implantation,Blastocyst Implantations,Decidual Cell Reactions,Embryo Implantations,Implantation, Embryo,Implantation, Ovum,Implantations, Blastocyst,Implantations, Embryo,Implantations, Ovum,Nidations,Ovum Implantations
D010634 Phenobarbital A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations. Phenemal,Phenobarbitone,Phenylbarbital,Gardenal,Hysteps,Luminal,Phenobarbital Sodium,Phenobarbital, Monosodium Salt,Phenylethylbarbituric Acid,Acid, Phenylethylbarbituric,Monosodium Salt Phenobarbital,Sodium, Phenobarbital
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011270 Pregnancy, Animal The process of bearing developing young (EMBRYOS or FETUSES) in utero in non-human mammals, beginning from FERTILIZATION to BIRTH. Animal Pregnancies,Animal Pregnancy,Pregnancies, Animal
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005260 Female Females
D005313 Fetal Death Death of the developing young in utero. BIRTH of a dead FETUS is STILLBIRTH. Fetal Mummification,Fetal Demise,Death, Fetal,Deaths, Fetal,Demise, Fetal,Fetal Deaths,Mummification, Fetal
D000014 Abnormalities, Drug-Induced Congenital abnormalities caused by medicinal substances or drugs of abuse given to or taken by the mother, or to which she is inadvertently exposed during the manufacture of such substances. The concept excludes abnormalities resulting from exposure to non-medicinal chemicals in the environment. Drug-Induced Abnormalities,Abnormalities, Drug Induced,Abnormality, Drug-Induced,Drug Induced Abnormalities,Drug-Induced Abnormality

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