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Related Concept Videos

Drug Delivery: Miscellaneous Routes01:22

Drug Delivery: Miscellaneous Routes

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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
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Combinatorial microneedle patch with tunable release kinetics and dual fast-deep/sustained release capabilities.

Miguel Angel Lopez-Ramirez1, Daniel Kupor1, Leonardo Marchiori1

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Summary

This study introduces a programmable microneedle (MN) patch for dual drug delivery. The innovative patch offers both fast, deep release and sustained therapeutic delivery from a single application.

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Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Nanotechnology

Background:

  • Transdermal microneedle (MN) patches using water-soluble polymers are vital in biomedicine.
  • Current MN patches have limitations in achieving both rapid, deep drug release and sustained delivery.
  • Material composition critically influences the efficacy of MN drug delivery systems.

Purpose of the Study:

  • To develop a dual-action, programmable MN patch with tunable release kinetics for diverse therapeutic applications.
  • To enable single-application delivery of therapeutics with distinct release profiles (fast/deep and sustained).
  • To optimize MN design, materials, and mechanical properties for enhanced performance.

Main Methods:

  • Fabrication of a combinatorial MN patch with distinct fast-release and sustained-release zones.
  • Incorporation of biodegradable magnesium (Mg) microparticle 'engines' for rapid burst release.
  • Utilizing biocompatible polymers for controllable, prolonged drug release.
  • Characterization and optimization of MN patch design, materials, and mechanical properties.

Main Results:

  • Demonstrated tunable release kinetics for tailored therapeutic delivery over minutes to months.
  • Successfully achieved rapid, deep delivery of a first payload using Mg microparticle engines.
  • Enabled sustained release of a second payload via controllable polymer matrices.
  • Optimized MN platform for effective dual-action drug delivery.

Conclusions:

  • The developed programmable MN platform offers versatile, dual-action transdermal drug delivery.
  • This technology promises improved therapeutic efficacy and patient compliance through single-patch application.
  • The platform's design allows for low-cost manufacturing and broad applicability in treating various conditions.