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Faculty Research 1980 - 1989
Transplacental teratogenic and carcinogenic effects in rabbits chronically treated with N-ethyl-N-nitrosourea.
Document Type
Article
Publication Date
1980
Keywords
Carcinogens, Ethylnitrosourea: to, Extremities: ab, Female, Jaw-Neoplasms: ci, Kidney-Neoplasms: ci, Maternal-Fetal-Exchange, Nephroblastoma: ci, Neurofibroma: ci, Nitrosourea-Compounds: to, Parietal-Bone: ab, Pregnancy, Rabbits, Rats, Sarcoma-Osteogenic: ci, Spinal-Cord-Neoplasms: ci, SUPPORT-U-S-GOVT-P-H-S, Teratogens
First Page
607
Last Page
614
JAX Location
43,961
JAX Source
JNCI. 1980 Sep; 65(3):607-14.
Abstract
Pregnant rabbits of two partially inbred strains, WH/J and IIIVO/J, were given ten consecutive daily ip injections of 10 mg N-ethyl-N-nitrosourea (ENU)/kg dissolved in trioctanoin starting on either day 10, 15, or 18 of gestation. Of 7 WH/J progeny weaned, 3 developed primary renal tumors at 6.8 +/- 0.6 months of age (mean +/- SE). Similarly, of 12 IIIVO/J progeny weaned, 10 developed primary renal tumors at 6.3 +/- 0.6 months of age (mean +/- SE); in addition, 1 fibroblastic osteosarcoma and 5 neurofibromas, some associated with neurilemma cysts, were observed. Renal tumors were nephroblastomas , which appeared to develop within small renal cortical cysts. The frequency of tumor induction for each strain was similar to that in our previous experiments with acute administration of ENU and ethyl-urea plus NaNO2, but the latency period (6.4 +/- 0.5 mo) was almost doubled. In addition, chronic treatment of ENU induced teratogenic effects. In a number of these progeny, a disproportionate stunting or miniaturization was evident, the frequency of which increased with the age of the treated fetuses. In contrast, holes were found in the parietal bones at birth, but with a frequency that decreased with increasing fetal age at time of treatment. No teratogenic effects were observed in the controls.
Recommended Citation
Fox RR,
Meier H,
Pottathil R,
Bedigian HG.
Transplacental teratogenic and carcinogenic effects in rabbits chronically treated with N-ethyl-N-nitrosourea. JNCI. 1980 Sep; 65(3):607-14.