Biomaterial Database

Metabolism of 1,3-butadiene: inhalation pharmacokinetics and tissue dosimetry of butadiene epoxides in rats and mice. 1996

M W Himmelstein, and M J Turner, and B Asgharian, and J A Bond

Chemical Industry Institute of Toxicology, Research Triangle Park, NC 27709, USA.

Significant species differences exist in the susceptibility to butadiene (BD)-induced cancer in rats and mice, and metabolism is likely a critical determinant for species sensitivity. This study measured the in vivo concentrations of, (1) BD in blood; (2) epoxybutene (EB) and diepoxybutane (DEB) in blood, lung and liver; and (3) glutathione (GSH) in lung and liver of male B6C3F1 mice and Sprague-Dawley rats during and after 6-h exposure to 62.5, 625, 1250, and 8000 (rat only) ppm BD. Mice had higher concentrations of EB and DEB in blood and tissues than did rats, DEB could not be detected in blood or tissues of rats, and the greatest depletion of GSH occurred in the lungs of mice. During exposure, the peak concentrations of EB in mice compared with rats were 4- to 8-fold higher in blood, 13- to 15-fold higher in lung, and 5- to 8-fold higher in liver. These data suggest that higher levels of BD epoxides in blood and tissues of mice compared with rats may explain, in part, the greater sensitivity of mice than rats to BD-induced carcinogenicity.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D002070	Butadienes	Four carbon unsaturated hydrocarbons containing two double bonds.	Butadiene Derivative,Butadiene Derivatives,Derivative, Butadiene,Derivatives, Butadiene
D002273	Carcinogens	Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.	Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D004852	Epoxy Compounds	Organic compounds that include a cyclic ether with three ring atoms in their structure. They are commonly used as precursors for POLYMERS such as EPOXY RESINS.	Epoxide,Epoxides,Epoxy Compound,Oxiranes,Compound, Epoxy,Compounds, Epoxy
D005978	Glutathione	A tripeptide with many roles in cells. It conjugates to drugs to make them more soluble for excretion, is a cofactor for some enzymes, is involved in protein disulfide bond rearrangement and reduces peroxides.	Reduced Glutathione,gamma-L-Glu-L-Cys-Gly,gamma-L-Glutamyl-L-Cysteinylglycine,Glutathione, Reduced,gamma L Glu L Cys Gly,gamma L Glutamyl L Cysteinylglycine
D000280	Administration, Inhalation	The administration of drugs by the respiratory route. It includes insufflation into the respiratory tract.	Drug Administration, Inhalation,Drug Administration, Respiratory,Drug Aerosol Therapy,Inhalation Drug Administration,Inhalation of Drugs,Respiratory Drug Administration,Aerosol Drug Therapy,Aerosol Therapy, Drug,Drug Therapy, Aerosol,Inhalation Administration,Administration, Inhalation Drug,Administration, Respiratory Drug,Therapy, Aerosol Drug,Therapy, Drug Aerosol
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013045	Species Specificity	The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.	Species Specificities,Specificities, Species,Specificity, Species
D017207	Rats, Sprague-Dawley	A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.	Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D051379	Mice	The common name for the genus Mus.	Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus