Teratogenicity of 5-azacytidine in the sprague-dawley rat

M. B. Rosen, H. S. House, B. M. Francis

Research output: Contribution to journalArticlepeer-review


5-Azacytidine (5-aza), a chemical that is incorporated into DNA and RNA with conse-quent alterations in the expression of mammalian genes, was administered to pregnant Sprague-Dawley rats on single days during gestation. Doses of 0.5, 1, and 2 mg/kg were given by intraperitoneal injection on d 9, 10, 11, or 12. Dams were killed on d 20 of gestation and fetuses were examined for both external and skeletal defects. 5-Azacytidine affected development on all days tested. The compound was embryole- thal, caused reductions in fetal weight, and had profound effects on morphological development. Digit and limb anomalies, exencephaty, micrognathia, gastroschisis, and various rib defects were observed and related to the day of exposure.

Original languageEnglish (US)
Pages (from-to)201-210
Number of pages10
JournalJournal of Toxicology and Environmental Health
Issue number2
StatePublished - Feb 1 1990
Externally publishedYes

ASJC Scopus subject areas

  • Toxicology
  • Pollution


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