Record Display for the EPA National Library Catalog
RECORD NUMBER: 6 OF 17Main Title | Developmental Effects of Methyl Benzimidazolecarbamate Following Exposure during Early Pregnancy. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Author | Cummings, A. M. ; Ebron-McCoy, M. T. ; Rogers, J. M. ; Barbee, B. D. ; | |||||||||||
CORP Author | ManTech Environmental Technology, Inc., Research Triangle Park, NC.;Health Effects Research Lab., Research Triangle Park, NC. Developmental Toxicology Div. | |||||||||||
Publisher | c1992 | |||||||||||
Year Published | 1992 | |||||||||||
Report Number | EPA-68-02-4450; EPA/600/J-92/116; | |||||||||||
Stock Number | PB92-164862 | |||||||||||
Additional Subjects | Teratogenic compounds ; Pregnancy ; Fungicides ; Benomyl ; Dose-response relationships ; Embryos ; Ovum implantation ; Mortality ; Fetus ; Reprints ; Methyl benzimidazolecarbamate | |||||||||||
Holdings |
|
|||||||||||
Collation | 8p | |||||||||||
Abstract | Methyl 2-benzimidazolecarbamate (MBC) and its parent compound benomyl are used as agricultural fungicides. Both chemicals are embryotoxic if administered during organogenesis, and benomyl is teratogenic. Rats were administered MBC at 0, 100, 200, 400, or 600 mg/kg/day during Days 1-8 of pregnancy and killed on Day 11 or Day 20 of gestation. On Day 11, embryos were assessed for survival rate, growth parameters, and anomalies. On Day 20, standard developmental toxicity evaluations were performed. Doses of 200 to 600 mg/kg/day MBC reduced embryonic survival by Day 11; exposure to MBC at 100 to 600 mg/kg/day reduced the number of fetuses surviving on Day 20. Evidence of developmental delay was apparent on Day 11 at all doses, and fetal weight was reduced by Day 20. |