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[Development of the progeny in prenatal fhenazepam exposure]
Farmakologiia I Toksikologiia
|May 1, 1980
Insights
Phenazepam showed no embryotoxic or teratogenic effects in pregnant rats at a dose of 100 mg/kg. However, a lower dose of 10 mg/kg impacted postnatal behavioral development in offspring.
Area of Science:
- Pharmacology
- Developmental Toxicology
- Neuroscience
Context:
- Investigating the safety of phenazepam during pregnancy is crucial due to its anxiolytic and sedative properties.
- Understanding potential risks to fetal development and long-term offspring health is essential for clinical practice.
Purpose:
- To evaluate the embryotoxic and teratogenic potential of phenazepam administered during pregnancy in a rat model.
- To assess the impact of phenazepam on the postnatal behavioral development of offspring.
Summary:
- Phenazepam administration at 100 mg/kg (1/7 LD50) to pregnant rats did not result in observable embryotoxic or teratogenic effects using standard teratologic assessment methods.
- A lower dose of phenazepam (10 mg/kg) administered during pregnancy was found to influence the development of behavioral reactions in rats during the postnatal period.
Impact:
- This study suggests that while high-dose phenazepam may not pose a direct risk of birth defects, lower doses could have subtle, long-term effects on offspring behavior.
- Findings highlight the importance of considering dose-dependent effects and potential neurodevelopmental impacts when prescribing or using phenazepam during pregnancy.
Abstract:
It was established in rat experiments that phenazepam in a dose of 100 mg/kg (1/7 LD50) per os administered during different periods of pregnancy exerts no embryotoxic or teratogenic effects recorded by means of the routine procedures applied in teratologic studies. In a dose of 10 mg/kg, however, phenazepam affects the formation of behavioral reactions in the postnatal period of ontogenesis.