Evaluation of Bendectin embryotoxicity in nonhuman primates

I. Ventricular septal defects in prenatal macaques and baboon

Andrew G Hendrickx, M. Cukierski, S. Prahalada, G. Janos, J. Rowland

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Cynomolgus monkeys, rhesus monkeys and baboons were administered 10 to 40 times the human dose equivalent of Bendectin throughout the major period of organogenesis (22(±3)–50 days of gestation). In animals examined prenatally (100 ± 2 days gestation) the total incidence of ventricular septal defects (VSD) was 40% in cynomolgus monkeys, 18% in rhesus monkeys, and 23% in baboons. The majority of VSD involved the muscular portion of the septum. No dose response was evident and there were no other cardiac or extracardiac defects found except for one baboon fetus with multiple defects. No defects were observed in cynomolgus monkeys administered Bendectin for 4‐day periods between 22 and 41 days of gestation. There was no association of Bendectin treatment with any noncardiac defect. In cynomolgus and rhesus monkeys examined at term there was one mitral valve defect and no incidence of VSD. The increased incidence of VSD observed prenatally in all three species and the absence of defects in macaques at term suggests a delay in closure of the ventricular septum in treated animals. The Bendectin‐treated monkey may be a suitable model for the study of the pathogenesis of VSD and the mechanism of spontaneous closure of the defect.

Original languageEnglish (US)
Pages (from-to)179-189
Number of pages11
JournalTeratology
Volume32
Issue number2
DOIs
StatePublished - 1985

Fingerprint

Papio
Ventricular Heart Septal Defects
Macaca
Macaca fascicularis
Primates
Defects
Macaca mulatta
Pregnancy
Incidence
Ventricular Septum
Organogenesis
Mitral Valve
Haplorhini
Fetus
dicyclomine, doxylamine, pyridoxine drug combination
Animals

ASJC Scopus subject areas

  • Embryology
  • Toxicology
  • Developmental Biology
  • Health, Toxicology and Mutagenesis

Cite this

Evaluation of Bendectin embryotoxicity in nonhuman primates : I. Ventricular septal defects in prenatal macaques and baboon. / Hendrickx, Andrew G; Cukierski, M.; Prahalada, S.; Janos, G.; Rowland, J.

In: Teratology, Vol. 32, No. 2, 1985, p. 179-189.

Research output: Contribution to journalArticle

Hendrickx, Andrew G ; Cukierski, M. ; Prahalada, S. ; Janos, G. ; Rowland, J. / Evaluation of Bendectin embryotoxicity in nonhuman primates : I. Ventricular septal defects in prenatal macaques and baboon. In: Teratology. 1985 ; Vol. 32, No. 2. pp. 179-189.
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