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Diazepam nanocapsules as an alternative for sleep induction: Development study and toxicity assessment
Julia Gabriele de Jesus Ferreira1, Victoria Givankliff Flores2, Mariana Roza Marco2
1Bioanalysis Laboratory, Health Sciences Institute, Universidade FEEVALE, Novo Hamburgo, RS, Brazil; Postgraduate Program on Toxicology and Analytical Toxicology, Universidade FEEVALE, Novo Hamburgo, Brazil.
Summary
Diazepam (DZP) nanocapsules were developed to improve drug delivery. The novel formulation showed reduced toxicity in C. elegans and enhanced hypnotic effects in mice, offering a safer alternative.
Area of Science:
- Pharmacology
- Nanotechnology
- Drug Delivery
Background:
- Diazepam (DZP) is a sedative with unfavorable residual effects.
- Nanotechnology offers potential to enhance drug characteristics and reduce side effects.
Purpose of the Study:
- Develop and characterize DZP-loaded nanocapsules.
- Evaluate the toxicity of DZP nanocapsules in alternative models.
- Assess the hypnotic-sedative effects of DZP nanocapsules in mice.
Main Methods:
- Nanocapsules prepared using nanoprecipitation.
- Stability, in vitro release, and C. elegans toxicity studies conducted.
- Acute oral toxicity and hypnotic-sedative effects evaluated in mice.
Main Results:
- Successful development of Poly-(ɛ-caprolactone) (PCL) nanocapsules with high DZP entrapment.
- Nanocapsules showed no adverse effects on C. elegans, unlike free DZP.
- No toxicity observed in mice; reduced DZP dose achieved hypnotic effect.
Conclusions:
- DZP-loaded PCL nanocapsules are a safe and effective formulation.
- Nanotechnology improves DZP's pharmacological profile, reducing toxicity.
- This formulation offers a promising approach for enhanced sedative and hypnotic therapy.
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