Record Display for the EPA National Library Catalog

RECORD NUMBER: 25 OF 33

OLS Field Name OLS Field Data
Main Title Prenatal alpha-Difluoromethylornithine Treatment: Effects on Postnatal Renal Growth and Function in the Rat.
Author Gray, J. A. ; Rehnberg, B. F. ; Rogers, E. H. ; Lau, C. ; Slotkin, T. A. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. Perinatal Toxicology Branch. ;Northrop Services, Inc./Environmental Sciences, Research Triangle Park, NC. ;Duke Univ. Medical Center, Durham, NC. Dept. of Pharmacology.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/280;
Stock Number PB90-185281
Additional Subjects Kidney ; Toxicity ; Enzyme inhibitors ; Rats ; Embryos ; Growth abnormalities ; Animal physiology ; Reprints ; Alpha-difluoromethylornithine ; Biological effects ; Prenatal exposure delayed effects ; Dose-response relationships ; Ornithine decarboxylase
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-185281 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/15/1990
Collation 9p
Abstract
DFMO (alpha-difluoromethylornithine) is a specific irreversible inhibitor of ornithine decarboxylase (ODC), a key enzyme in the biosynthesis of polyamines, which in turn control macromolecule synthesis during cell proliferation. The current study was designed to investigate the effects of inhibition of ODC during discrete prenatal periods on renal growth and function. Five doses of 500 mg/kg DFMO or saline s.c. were administered to timed pregnant Sprague-Dawley rats at 12 hr intervals beginning on gestation days (GD) 11, 14, or 17. Half the dams were killed on GD 20 for fetal morphological analyses and half were allowed to go to term. Renal function was assessed on postnatal days (PD) 3, 6, 10, and 14 by tests of basal renal clearance and urinary concentrating ability, and on PD 42-44 serum chemistries were measured. All three gestational treatment regiments resulted in postnatal deficits in general growth. These data indicate that general tissue growth is not always a predictor of physiological development and support the necessity of multifaceted approaches to the understanding of adverse developmental effects. (Copyright (c) 1989 Alan R. Liss, Inc.)