Expandable Drug Delivery Systems Based on Shape Memory Polymers: Impact of Film Coating on Mechanical Properties and Release and Recovery Performance
Articolo
Data di Pubblicazione:
2022
Citazione:
Expandable Drug Delivery Systems Based on Shape Memory Polymers: Impact of Film Coating on Mechanical Properties and Release and Recovery Performance / M. Uboldi, C. Pasini, S. Pandini, F. Baldi, F. BRIATICO VANGOSA, N. Inverardi, A. Maroni, S. Moutaharrik, A. Melocchi, A. Gazzaniga, L. Zema. - In: PHARMACEUTICS. - ISSN 1999-4923. - 14:12(2022 Dec 15), pp. 2814.1-2814.23. [10.3390/pharmaceutics14122814]
Abstract:
Retentive drug delivery systems (DDSs) are intended for prolonged residence and release inside hollow muscular organs, to achieve either local or systemic therapeutic goals. Recently, formulations based on shape memory polymers (SMPs) have gained attention in view of their special ability to recover a shape with greater spatial encumbrance at the target organ (e.g., urinary bladder or stomach), triggered by contact with biological fluids at body temperature. In this work, poly(vinyl alcohol) (PVA), a pharmaceutical-grade SMP previously shown to be an interesting 4D printing candidate, was employed to fabricate expandable organ-retentive prototypes by hot melt extrusion. With the aim of improving the mechanical resistance of the expandable DDS and slowing down relevant drug release, the application of insoluble permeable coatings based on either Eudragit® RS/RL or Eudragit® NE was evaluated using simple I-shaped specimens. The impact of the composition and thickness of the coating on the shape memory, swelling, and release behavior as well as on the mechanical properties of these specimens was thoroughly investigated and the effectiveness of the proposed strategy was demonstrated by the results obtained.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
expandable drug delivery system; film-coating; fused deposition modeling; hot melt extrusion; poly(vinyl alcohol) (PVA); retentive drug delivery system; shape memory polymer
Elenco autori:
M. Uboldi, C. Pasini, S. Pandini, F. Baldi, F. BRIATICO VANGOSA, N. Inverardi, A. Maroni, S. Moutaharrik, A. Melocchi, A. Gazzaniga, L. Zema
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