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Related Experiment Videos

A vaginal drug delivery model.

Mohd Aamir Mirza1, Amulya K Panda2, S Asif3

  • 1a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India.

Drug Delivery
|March 15, 2016
PubMed
Summary

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This study developed a novel mucoadhesive, thermosensitive gel using solid lipid nanoparticles (SLNs) for enhanced vaginal drug delivery of itraconazole. The formulation demonstrated safety, bioadhesion, and improved efficacy in a rat infection model.

Area of Science:

  • Pharmaceutical Sciences
  • Biomaterials Science

Background:

  • Vaginal drug delivery faces challenges due to physiological variations like pH.
  • Developing effective delivery systems for antifungal agents like itraconazole is crucial.

Purpose of the Study:

  • To formulate and optimize a mucoadhesive, thermosensitive gel for vaginal itraconazole delivery using solid lipid nanoparticles (SLNs).
  • To overcome vaginal physiological barriers and improve drug efficacy.

Main Methods:

  • Solid lipid nanoparticles (SLNs) were prepared using stearic acid and Compritol 888, stabilized with Poloxomer 188 and sodium taurocholate.
  • Optimized SLNs were incorporated into a mucoadhesive and thermosensitive gel using Carbopol 934 and Pluronic F 127.
  • Formulations were characterized for gelling temperature, viscosity, in vitro drug release, cytotoxicity (MTT assay), and in vivo performance (irritation, bioadhesion, efficacy in a rat model).
Keywords:
AntifungalMTT assaybioadhesiveitraconazolepoloxamersolid lipid nanoparticlesthermosensitive gelx-ray diffraction

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Main Results:

  • The optimized gel showed a suitable gelling temperature (35°C) and viscosity (0.920 PaS).
  • In vitro studies indicated significant itraconazole release (62.2% in 20 hours).
  • The gel was non-cytotoxic, non-irritating in vivo, exhibited good bioadhesion, and significantly reduced fungal load in a rat infection model compared to controls.

Conclusions:

  • The developed mucoadhesive, thermosensitive gel system effectively overcomes vaginal delivery barriers for itraconazole.
  • This formulation holds promise for improved vaginal antifungal therapy.