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Microfluidic-based fabrication and characterization of drug-loaded PLGA magnetic microspheres with tunable shell thickness
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Microfluidic-based fabrication and characterization of drug-loaded PLGA magnetic microspheres with tunable shell thickness
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Journal Article
Microfluidic-based fabrication and characterization of drug-loaded PLGA magnetic microspheres with tunable shell thickness
2021
Overview
To overcome the shortcoming of conventional transarterial chemoembolization (cTACE) like high systemic release, a novel droplet-based flow-focusing microfluidic device was fabricated and the biocompatible poly(lactic-co-glycolic acid) (PLGA) magnetic drug-eluting beads transarterial chemoembolization (TACE) microspheres with tunable size and shell thickness were prepared via this device. Paclitaxel, as a model active, was loaded through O/O/W emulsion method with high efficiency. The size and the shell thickness vary when adjusting the flow velocity and/or solution concentration, which caters for different clinical requirements to have different drug loading and release behavior. Under the designed experimental conditions, the average diameter of the microspheres is 60 ± 2 μm and the drug loading efficiency has reached 6%. The drug release behavior of the microspheres shows the combination of delayed release and smoothly sustained release profiles and the release kinetics differ within different shell thickness. The microspheres also own the potential of magnetic resonance imaging (MRI) visuality because of the loaded magnetic nanoparticles. The microsphere preparation method and device we proposed are simple, feasible, and effective, which have a good application prospect.
Publisher
Taylor & Francis,Taylor & Francis Ltd,Taylor & Francis Group
Subject
