Biomaterial Database

Ten-day repeated-exposure inhalation study of dimethylformamide (DMF) in cynomolgus monkeys. 1991

M E Hurtt, and K T McCooey, and M E Placke, and G L Kennedy

Du Pont, Haskell Laboratory for Toxicology and Industrial Medicine, Newark, DE 19714.

Cynomolgus monkeys showed no measurable adverse effects following inhalation of 500 ppm dimethylformamide (DMF), 6 h/d, 5 d/wk, for 2 weeks either when exposed whole-body or head-only (one monkey per exposure route). Measurement of DMF concentrations into and out of the head-only exposure unit along with measurement of the tidal volume suggest that DMF absorption by the respiratory tract is approximately 100% at a concentration of 500 ppm. Plasma samples taken 1/2 to 18 h after the first exposure show DMF AUC values which were 3 times higher in the monkey exposed by whole-body, indicating considerable absorption by non-inhalation route(s). The same comparison of plasma samples taken following the final (10th) exposure similarly had a 6-times DMF AUC value for the monkey exposed by whole-body. From this study it is apparent that the practice of avoiding dermal contact with DMF is important in reducing the likelihood of producing DMF-induced injury in the workplace.

UI	MeSH Term	Description	Entries
D008252	Macaca fascicularis	A species of the genus MACACA which typically lives near the coast in tidal creeks and mangrove swamps primarily on the islands of the Malay peninsula.	Burmese Long-Tailed Macaque,Crab-Eating Monkey,Cynomolgus Monkey,M. f. aurea,M. fascicularis,Macaca fascicularis aurea,Monkey, Crab-Eating,Monkey, Cynomolgus,Crab-Eating Macaque,Burmese Long Tailed Macaque,Crab Eating Macaque,Crab Eating Monkey,Crab-Eating Macaques,Crab-Eating Monkeys,Cynomolgus Monkeys,Long-Tailed Macaque, Burmese,Macaque, Burmese Long-Tailed,Macaque, Crab-Eating,Monkey, Crab Eating
D008297	Male		Males
D010865	Pilot Projects	Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.	Pilot Studies,Pilot Study,Pilot Project,Project, Pilot,Projects, Pilot,Studies, Pilot,Study, Pilot
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D001835	Body Weight	The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.	Body Weights,Weight, Body,Weights, Body
D004126	Dimethylformamide	A formamide in which the amino hydrogens are replaced by methyl groups.	N,N-Dimethylformamide,N,N Dimethylformamide
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
D005559	Formamides	A group of amides with the general formula of R-CONH2.
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