Title :

PEO hot melt extrudates for controlled drug delivery: Importance of the type of drug and loading

Author(s) :

Cantin, Oriane [Auteur]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Siepmann, Florence [Auteur]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Advanced Drug Delivery Systems (ADDS) - U1008
Willart, Jean-François [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Danede, Florence [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Siepmann, Juergen [Auteur]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Advanced Drug Delivery Systems (ADDS) - U1008
Karrout, Youness [Auteur]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Advanced Drug Delivery Systems (ADDS) - U1008

Journal title :

Journal of Drug Delivery Science and Technology

Pages :

102238

Publisher :

Elsevier BV

Publication date :

2020-11-21

ISSN :

1773-2247

English keyword(s) :

PEO
hot melt extrudate
controlled release
theophylline
metoprolol
ibuprofen

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
Physique [physics]/Matière Condensée [cond-mat]/Systèmes désordonnés et réseaux de neurones [cond-mat.dis-nn]

English abstract : [en]

A variety of poly(ethylene oxide) (PEO)-based matrix tablets loaded with theophylline, ibuprofen or metoprolol tartrate was prepared via hot melt extrusion. The initial drug loading was varied from 10 to 60 %, the PEO ...
Show more >A variety of poly(ethylene oxide) (PEO)-based matrix tablets loaded with theophylline, ibuprofen or metoprolol tartrate was prepared via hot melt extrusion. The initial drug loading was varied from 10 to 60 %, the PEO polymer molecular weight from 300 to 7,000 kDa. The extrudates were characterized before and after exposure to phosphate buffer pH 7.4 at 37 °C using optical and scanning electron microscopy, X-ray diffraction analysis and drug release measurements. In the case of metoprolol tartrate, the resulting drug release rates monotonically increased with increasing initial drug loading, irrespective of the PEO grade. This can be attributed to an “increased porosity effect” upon drug leaching, resulting in less hindrance for subsequent drug release. However, in the case of theophylline and ibuprofen, also “limited drug solubility effects” played a role and were even dominant in 7,000 kDa PEO-based extrudates: Upon water penetration into the system, not all of the drug was dissolved. Dissolved and non-dissolved drug co-existed. Importantly, only dissolved drug is available for diffusion. Thus, increasing the initial drug content did not increase the concentration gradients of dissolved drug (and the absolute drug release rates in the absence of porosity effects), but increased the 100 % reference values. Interestingly, in 300 kDa PEO-based extrudates, “increased porosity effects” dominated for all drugs, and the relative release rates always increased with increasing drug loading. At 1,000 and 7,000 kDa, the resulting released rate increased or decreased with increasing drug loading, depending of the type of drug.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Advanced Drug Delivery Systems (ADDS) - U1008
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Matériaux Moléculaires et Thérapeutiques

Submission date :

2020-11-24T10:37:33Z
2020-11-25T14:13:53Z
2020-12-15T14:28:23Z
2021-08-26T12:31:42Z