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Developing Soluplus®-Based Microparticle Amorphous Solid Dispersions with High Drug Loading for Enhanced Celecoxib Dissolution via Electrospraying.
AAPS PharmSciTech
January 2025
Laboratory of Advanced Theranostic Materials and Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
Amorphous solid dispersion (ASD) is one of the most studied strategies for improving the dissolution performance of poorly water-soluble drugs, but ASDs often have low drug loadings, thereby necessitating larger dosage sizes. This study intended to create Soluplus® (SOL)-based microparticle ASDs with high drug loading (up to 60 w/w%) and long-term stability (at least 16 months) using electrospraying to enhance the dissolution of poorly water-soluble celecoxib (CEL). X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses showed that the electrosprayed SOL-CEL microparticles were amorphous, and Fourier transform infrared spectroscopy (FTIR) data indicated the presence of hydrogen bonding between SOL and CEL in the microparticles, which helped stabilize the ASDs.
View Article and Find Full Text PDFPectins play a central role in enhancing Al tolerance of alfalfa via looseing fibre-microfiber arrangement of cell wall in root tips.
Int J Biol Macromol
January 2025
School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; Key Laboratory of Urban Agriculture, Ministry of Agriculture, Shanghai 201101, China. Electronic address:
Cell wall greatly affects Al tolerance of plants, but the precise mechanisms by which the cell wall modulating Al tolerance remains largely unknown. In the present study, Al tolerant alfalfa varieties (WL525 and WL903) accumulated less Al in root tips, cell wall and pectins, averagely decreased by 23.8 %, 41.
View Article and Find Full Text PDFMultifunctional composite films with regenerated cellulose prepared via acid-catalytic degradation for in-situ growth of ZnO.
Int J Biol Macromol
January 2025
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China; State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, and MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi University, Nanning 530004, China; School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China. Electronic address:
Regenerated cellulose is extensively utilized as a natural polymer due to its actually natural piezoelectric properties as well as renewable properties, but suffers from processing difficulties and low piezoelectric constants (d). Consequently, this work focuses on controlling the molecular weight of regenerated cellulose through pretreatment methods that promote the growth of in situ ZnO to enhance its d. Firstly, the acid-catalyzed pulp fibers (PF) and zinc nitrate hexahydrate were added in NaOH/urea solvent to effectively prepare RC/ZnO composite film via regeneration and in-situ growth.
View Article and Find Full Text PDFAssessing the Impacts of Drug Loading and Polymer Type on Dissolution Behavior and Diffusive Flux of GDC-6893 Amorphous Solid Dispersions.
J Pharm Sci
January 2025
Department of Synthetic Molecule Pharmaceutical Sciences, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA. Electronic address:
It is desirable but remains challenging to develop high drug load amorphous solid dispersions (ASDs) without compromising their quality attributes and bio-performance. In this work, we investigated the impacts of formulation variables, such as drug loading (DL) and polymer type, on dissolution behavior, diffusive flux, and in vitro drug absorption of ASDs of a high T compound, GDC-6893. ASDs with two polymers (HPMCAS and PVPVA) and various DLs (20 - 80%) were produced by spray drying and their drug-polymer miscibility was evaluated using solid-state nuclear magnetic resonance (ssNMR).
View Article and Find Full Text PDFInvestigation of aerosol jet printing for the preparation of solid dosage forms.
Int J Pharm
January 2025
EPSRC CMAC Future Manufacturing Research Hub, Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 99 George Street, Glasgow G1 1RD UK; The Cancer Research UK Formulation Unit, Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow G4 0RE UK.
Oral drug delivery remains the preferred method of drug administration but due to poor solubility many active pharmaceutical ingredients (APIs) are ill suited to this. A number of methods to improve solubility of poorly soluble Biopharmaceutical Classification System (BCS) Class II drugs already exist but there is a lack of scalable, flexible methods. As such the current study applies the innovative technique of aerosol jet printing to increase the dissolution capabilities of a Class II drug in a manner which permits flexibility to allow dosage form tailoring.
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