Related Experiment Videos
Developmental toxicity of methoxyflurane in mice
Anesthesia and Analgesia
|June 1, 1980
Summary
Methoxyflurane exposure at trace or subanesthetic levels did not harm mouse development. However, anesthetic concentrations of methoxyflurane during pregnancy caused adverse fetal effects, including developmental delays and skeletal anomalies.
Area of Science:
- Toxicology
- Developmental Biology
- Anesthesiology
Background:
- Methoxyflurane is an anesthetic agent.
- Understanding its developmental toxicity is crucial for patient safety.
- Previous data on developmental effects is limited.
Purpose of the Study:
- To evaluate the developmental toxicity of methoxyflurane at various concentrations.
- To assess reproductive and fetal development in mice exposed during gestation.
Main Methods:
- Swiss/ICR mice were exposed to methoxyflurane (trace, subanesthetic, anesthetic) daily during critical pregnancy days (6-15).
- Reproductive parameters and fetal morphology were assessed.
- Developmental endpoints included fetal weight, ossification, renal maturation, and skeletal anomalies.
Main Results:
- No adverse effects on reproduction or fetal development were observed at trace (2 ppm) and subanesthetic (60 ppm) methoxyflurane concentrations.
- Anesthetic concentrations (2000 ppm) led to decreased fetal weight, delayed ossification, and delayed renal maturation.
- A higher incidence of minor skeletal anomalies was noted with anesthetic exposure.
Conclusions:
- Gestational exposure to trace or subanesthetic methoxyflurane concentrations does not cause reproductive loss or morphologic abnormalities in offspring.
- Anesthetic levels of methoxyflurane during pregnancy pose risks to fetal development.