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Updated: Jun 11, 2025

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
Published on: January 7, 2019
Enhanced drug release through nitrendipine/hydroxypropyl methylcellulose solid dispersion via supercritical
Jianxia Hao1, Ning Zhu1, Lijun Song1
1College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; Inner Mongolia Engineering Research Center for CO(2) Capture and Utilization, Hohhot 010051, China; Key Laboratory of CO(2) Resource Utilization at Universities of Inner Mongolia Autonomous Region, Hohhot 010051, China.
Supercritical antisolvent technology created nitrendipine/hydroxypropyl methylcellulose solid dispersions. This enhanced drug solubility and bioavailability, offering a promising delivery system with good biocompatibility.
Area of Science:
- Pharmaceutical Technology
- Materials Science
Background:
- Nitrendipine (NT) exhibits poor water solubility, limiting its oral bioavailability and practical use.
- Hydroxypropyl methylcellulose (HPMC) is a biocompatible and biodegradable polymer with a large surface area, suitable for drug delivery.
Purpose of the Study:
- To develop an efficient drug delivery system for nitrendipine using HPMC.
- To optimize NT/HPMC solid dispersion preparation via supercritical antisolvent (SAS) technology to enhance solubility.
Main Methods:
- Preparation of nitrendipine/HPMC solid dispersion using supercritical antisolvent (SAS) technology.
- Optimization of operating parameters including solvent, host-guest ratio, concentration, temperature, and pressure.
- Characterization of solid dispersion properties (particle size, surface area) and evaluation of in vitro drug release and bioactivity.
Main Results:
- Optimized SAS technology yielded non-static, spherical NT/HPMC particles with high surface area and small particle size.
- In vitro studies showed significantly enhanced dissolution and solubility of NT from the solid dispersion compared to pure NT.
- The NT/HPMC solid dispersion demonstrated good biocompatibility and antibacterial performance in vitro.
Conclusions:
- SAS technology is effective for preparing NT/HPMC solid dispersions with improved physicochemical properties.
- The developed solid dispersion system offers enhanced nitrendipine solubility, dissolution, and bioavailability.
- NT/HPMC solid dispersions represent a promising drug delivery platform with potential biomedical applications.
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