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Published on: March 22, 2022
High celecoxib-loaded nanoparticles prepared by a vibrating nozzle device
Alenka Zvonar1, Julijana Kristl, Janez Kerc
1Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia.
This study demonstrates a vibrating nozzle device for creating celecoxib nanoparticles (NP) using polylactic acid (PLA) and poly(lactic-co-glycolic acid) (PLGA). The method yields reproducible, stable nanoparticles with high drug loading and sustained release for improved drug delivery.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
- Biotechnology
Background:
- Poorly water-soluble drugs present formulation challenges in drug delivery.
- Nanoparticle (NP) technology offers potential for enhanced solubility and controlled release.
- Vibrating nozzle devices are established for encapsulation but less explored for NP formulation.
Purpose of the Study:
- To formulate celecoxib nanoparticles (NP) using a vibrating nozzle device.
- To investigate the influence of formulation parameters on NP characteristics and drug loading.
- To evaluate the in vitro release profile and stability of the formulated nanoparticles.
Main Methods:
- Celecoxib was encapsulated into polylactic acid (PLA) and poly(lactic-co-glycolic acid) (PLGA) nanoparticles using a vibrating nozzle device.
- Parameters varied included polymer type, drug:polymer ratio, and polyvinyl alcohol (PVA) concentration.
- Nanoparticle size, polydispersity index (PDI), surface properties, entrapment efficiency, drug loading, and in vitro release were analyzed.
- Thermal analysis and X-ray diffraction (XRD) were used to characterize drug dispersion.
Main Results:
- Nanoparticles (NP) ranged from 230-270 nm with a PDI < 0.25 and spherical morphology.
- Optimal conditions yielded a maximum celecoxib loading of 13% (w/w) with a 1:5 drug:polymer ratio and 0.1% PVA.
- Thermal analysis and XRD indicated amorphous or molecularly dispersed celecoxib within the polymeric matrix.
- In vitro release showed an initial burst followed by sustained release, and freeze-dried NP were redispersible.
Conclusions:
- The vibrating nozzle device is effective for producing stable, high-loading celecoxib nanoparticles (NP) with controlled release.
- Formulation parameters significantly influence NP characteristics, enabling optimization for drug delivery.
- The reproducible and scalable nature of this method supports its potential for industrial application in nanoparticle formulation.
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