Toxicity testing of atracurium.

Area of Science:

• Pharmacology
• Toxicology
• Anesthesiology

Background:

• Atracurium is a non-depolarizing neuromuscular blocking agent.
• Understanding its toxicity is crucial for safe clinical application.

Purpose of the Study:

• To evaluate the toxicity of atracurium in various animal models.
• To assess potential adverse effects, including reproductive and cardiovascular impacts.

Main Methods:

• Subacute toxicity tests in rats, dogs, and monkeys.
• Fetal toxicity testing in rabbits and a paranatal study in cats.
• Physiological monitoring of cardiovascular parameters in dogs, cats, and pigs.
• Mutagenicity testing using the Ames test.

Main Results:

• No specific adverse effects were observed even at supra-paralyzing doses.
• Atracurium did not appear to cross the placenta at term.
• Neonatal kittens showed resistance to its neuromuscular blocking effects.
• Intravenous administration of high doses had minimal impact on arterial pressure and heart rate.
• The solution was non-irritating locally.
• Atracurium was not mutagenic in the Ames test.

Conclusions:

• Atracurium exhibits a low toxicity profile across multiple animal species.
• It demonstrates safety in reproductive and cardiovascular assessments.
• The compound is not mutagenic, supporting its safety profile.