1
|
Preparation and Characterization of Solid Dispersions Composed of Curcumin, Hydroxypropyl Cellulose and/or Sodium Dodecyl Sulfate by Grinding with Vibrational Ball Milling. Pharmaceuticals (Basel) 2020; 13:ph13110383. [PMID: 33198284 PMCID: PMC7696471 DOI: 10.3390/ph13110383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 01/27/2023] Open
Abstract
Solubility is an important physicochemical property affecting drug bioavailability. One approach to improve drug solubility is using amorphous formulations, which can improve solubility by up to a 1000-fold. Herein, amorphous curcumin (CUR) and amorphous solid dispersions (SDs) consisting of CUR, hydroxypropyl cellulose (HPC) and/or sodium dodecyl sulfate (SDS) were developed using vibrational ball milling. The resulting ground mixtures (GMs) were characterized using powder X-ray diffractometry, Fourier transform infrared spectroscopy, differential scanning calorimetry and a dissolution test. The 60-min GM containing 90% HPC significantly increased the drug solubility. Presence of SDS in the GMs containing 90% HPC reduced the grinding duration from 60 min to 30 min in forming a ground SD that significantly increased the CUR dissolution rate. This amorphous state was stable for 30 days when stored at 40 °C/RH 75%.
Collapse
|
2
|
Ngono F, Cuello GJ, Jiménez-Ruiz M, Willart JF, Guerain M, Wildes AR, Stunault A, Hamoudi-Ben Yelles CM, Affouard F. Morphological and Structural Properties of Amorphous Lactulose Studied by Scanning Electron Microscopy, Polarized Neutron Scattering, and Molecular Dynamics Simulations. Mol Pharm 2020; 17:10-20. [PMID: 31710493 DOI: 10.1021/acs.molpharmaceut.9b00767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Morphological and structural properties of amorphous disaccharide lactulose (C12H22O11), obtained by four different amorphization methods (milling, quenching of the melt form, spray-drying, and freeze-drying), are investigated by scanning electron microscopy, polarized neutron scattering, and molecular dynamics simulations. While major differences on the morphology of the different amorphous samples are revealed by scanning electron microscopy images, only subtle structural differences have been found by polarized neutron scattering. Microstructure of the milled sample appears slightly different from the other amorphized materials with the presence of remaining crystalline germs which are not detected by X-ray diffraction. Quantitative phase analysis shows that these remaining crystallites are present in a ratio between 1 and 4%, and their size remains between 20 and 30 nm despite a long milling time of about 8 h. The impact of the change in tautomeric concentrations on the physical properties of lactulose in the amorphous state has been investigated from molecular dynamics simulations. It is suggested that chemical differences between lactulose tautomers could be at the origin of small structural differences detected by polarized neutron scattering.
Collapse
Affiliation(s)
- Frederic Ngono
- Universite de Lille, CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France.,Institut Laue Langevin , 71 Av. des Martyrs, CS 20156 , F-38042 Grenoble , France
| | - Gabriel J Cuello
- Institut Laue Langevin , 71 Av. des Martyrs, CS 20156 , F-38042 Grenoble , France
| | - Monica Jiménez-Ruiz
- Institut Laue Langevin , 71 Av. des Martyrs, CS 20156 , F-38042 Grenoble , France
| | - Jean-Francois Willart
- Universite de Lille, CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France
| | - Mathieu Guerain
- Universite de Lille, CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France
| | - Andrew R Wildes
- Institut Laue Langevin , 71 Av. des Martyrs, CS 20156 , F-38042 Grenoble , France
| | - Anne Stunault
- Institut Laue Langevin , 71 Av. des Martyrs, CS 20156 , F-38042 Grenoble , France
| | | | - Frederic Affouard
- Universite de Lille, CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France
| |
Collapse
|