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Controlled drug release from hydrogel-based matrices: Experiments and modeling.

Diego Caccavo1, Sara Cascone1, Gaetano Lamberti1

  • 1Department of Industrial Engineering, Via Giovanni Paolo II, 134, University of Salerno, 84084 Fisciano (SA), Italy.

International Journal of Pharmaceutics
|April 2, 2015
PubMed
Summary
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This study validates a mathematical model for hydrogel matrices used in oral drug delivery. The model accurately predicts hydrogel behavior like swelling and drug release, crucial for developing new pharmaceuticals.

Area of Science:

  • Pharmaceutical Sciences
  • Materials Science
  • Biomedical Engineering

Background:

  • Hydrogel-based matrices are key for controlled oral drug delivery.
  • Understanding hydrogel behavior (swelling, drug dissolution, erosion) is essential for pharmaceutical design.
  • Existing models require refinement for accurate prediction of in vivo performance.

Purpose of the Study:

  • To investigate and mathematically model the behavior of hydrogel matrices for oral drug delivery.
  • To validate experimental findings with a refined physical model.
  • To confirm the predictive power of the model for novel pharmaceutical development.

Main Methods:

  • Utilized gravimetric and texture analysis techniques to study hydrogel matrix behavior.
  • Developed and applied a refined physical model based on balance equations, rate equations, and swelling predictions.
Keywords:
HydrogelsHydroxypropyl-methylcellulose-HPMC (PubChem CID: 57503849)ModelingTexture analysisTheophylline (PubChem CID: 2153)Transport phenomenaWater uptake

Related Experiment Videos

  • Correlated experimental data with model calculations to assess accuracy.

    • Main Results:

    • Experimental data on hydrogel water uptake, swelling, drug dissolution, diffusion, and erosion were collected.
    • The physical model demonstrated good agreement with the extensive experimental dataset.
    • The model successfully described the complex behaviors observed in hydrogel matrices.

    Conclusions:

    • The validated physical model accurately quantifies hydrogel matrix behavior for oral drug delivery.
    • Both the experimental and theoretical approaches are confirmed as valid and reliable.
    • This work provides a foundation for designing advanced hydrogel-based pharmaceuticals for controlled release.