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Characterization of the Shells in Layer-By-Layer Nanofunctionalized Particles: A Computational Study.

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Summary
This summary is machine-generated.

A new mathematical model simulates drug release from microparticle carriers, showing ~85% of metronidazole released in 230 hours. This model aids in optimizing drug delivery systems for localized treatments.

Keywords:
drug diffusiondrug dissolutiondrug releaselayer-by-layermathematical modeling

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Area of Science:

  • Biomaterials Science
  • Chemical Engineering
  • Pharmacology

Background:

  • Drug delivery carriers offer localized treatment with minimal side effects.
  • Layer-by-layer releasing particles are of increasing interest for controlled release of therapeutics.
  • Experimental drug release studies can be time-consuming and expensive.

Purpose of the Study:

  • To develop a continuum-scale mathematical model for drug transport and release from core-shell microparticles.
  • To understand the impact of design parameters on drug kinetics and release profiles.
  • To validate the model using metronidazole release data for antibacterial treatment.

Main Methods:

  • Developed a continuum-scale mathematical model incorporating drug dissolution and diffusion.
  • Included a mechanism for drug biomolecules entrapped within the polymeric shell.
  • Performed sensitivity analysis and calibrated the model against experimental data for metronidazole release.

Main Results:

  • The model predicts approximately 85% drug release within 230 hours, characterized by two release regimes.
  • Outer layer diffusivity significantly impacts drug release compared to core diffusivity.
  • Increased dissolution parameters lead to an initial burst release; elliptical particle shape enhances release percentage without altering release time.

Conclusions:

  • The developed mathematical model effectively simulates drug release from core-shell microparticles.
  • Model parameters like diffusivity and dissolution significantly influence drug release kinetics.
  • Particle geometry can be optimized to enhance drug release efficiency.