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Agafonov M, Ivanov S, Terekhova I. Improvement of pharmacologically relevant properties of methotrexate by solid dispersion with Pluronic F127. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 124:112059. [PMID: 33947553 DOI: 10.1016/j.msec.2021.112059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/10/2021] [Accepted: 03/13/2021] [Indexed: 02/08/2023]
Abstract
Solid dispersion with Pluronic F127 was proposed as alternative approach to modify the pharmacologically relevant properties of methotrexate (MTX). Solid dispersion of MTX with Pluronic F127 was prepared by fusion method and characterized by powder X-ray diffraction, thermal analysis, scanning electron microscopy and FTIR spectroscopy with the aim to elucidate the physical state of the dispersed MTX and the nature of the interactions occurring between MTX and the carrier. Effect of Pluronic F127 on solubility, dissolution rate, membrane permeability, and pharmacokinetic parameters was revealed in vitro and in vivo. It was found that physical interactions of MTX with Pluronic F127 are predominant in the solid dispersion. The effect of Pluronic F127 on the MTX solubility and release rate of MTX from the solid dispersion is pH dependent. Apparent solubility of MTX released from the solid dispersion is increased in the acidic medium and remains unchanged in the alkaline medium. In comparison with the pristine MTX, the release of MTX from the solid dispersion is faster in the acidic medium and slower in the alkaline medium. Influence of Pluronic F127 on the membrane permeability of MTX is insignificant. Bioavailability of orally administrated solid dispersion in increased. Results from in vitro and in vivo studies suggested that the pharmacokinetic properties of MTX can be improved by solid dispersion with Pluronic F127.
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Affiliation(s)
- Mikhail Agafonov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya str., 153045 Ivanovo, Russian Federation
| | - Sergey Ivanov
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71, pr. Oktyabrya, 450054 Ufa, Russian Federation
| | - Irina Terekhova
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya str., 153045 Ivanovo, Russian Federation.
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De Lisi R, Giammona G, Lazzara G, Milioto S. Copolymers sensitive to temperature and pH in water and in water+oil mixtures: A DSC, ITC and volumetric study. J Colloid Interface Sci 2011; 354:749-57. [DOI: 10.1016/j.jcis.2010.11.075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 11/22/2010] [Accepted: 11/24/2010] [Indexed: 11/24/2022]
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Buscemi S, Lazzara G, Milioto S, Palumbo Piccionello A. Extended investigation of the aqueous self-assembling behavior of a newly designed fluorinated surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13368-13375. [PMID: 19689146 DOI: 10.1021/la9019487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The physicochemical behavior of the newly synthesized fluorinated 5-hydroxyamino-3-perfluoroheptyl-1,2,4-oxadiazin-6-one (PFHO) surfactant was investigated. Thermal analysis showed that the pure surfactant is thermally stable under an inert atmosphere to 135 degrees C, which is several degrees higher than the melting point (99 degrees C). PFHO is rather active at the water/air interface where it assumes a standing up configuration. It exhibits an enhanced self-assembling behavior; accordingly, the critical micellar concentrations at some temperatures are 2 orders of magnitude lower than those of a similar surfactant having the same phobicity, such as sodium perfluorooctanoate. Even in the dilute domains, PFHO forms large micelles, detected by dynamic light scattering studies, that are precursors of the gel occurring at rather low composition (only 2.0% w/w at 25 degrees C). Optical microscopy evidenced cylindrical aggregates in gel systems whereas differential scanning calorimetry and viscosity showed that the gels are stable over a wide temperature range to ca. 70 degrees C where they undergo a reversible gel --> fluid transition. Finally, percolation theory combined with data provided by the experimental studies enabled us to predict the PFHO gelation process correctly, in very good agreement with the experimental findings.
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Affiliation(s)
- S Buscemi
- Dipartimento di Chimica Organica E. Paternò, Università degli Studi di Palermo, Viale delle Scienze, Parco D'Orleans II, 90128 Palermo, Italy
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Thermodynamics of surfactants, block copolymers and their mixtures in water: the role of the isothermal calorimetry. Int J Mol Sci 2009; 10:2873-2895. [PMID: 19742173 PMCID: PMC2738900 DOI: 10.3390/ijms10072873] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 06/19/2009] [Accepted: 06/19/2009] [Indexed: 11/17/2022] Open
Abstract
The thermodynamics of conventional surfactants, block copolymers and their mixtures in water was described to the light of the enthalpy function. The two methodologies, i.e. the van’t Hoff approach and the isothermal calorimetry, used to determine the enthalpy of micellization of pure surfactants and block copolymers were described. The van’t Hoff method was critically discussed. The aqueous copolymer+surfactant mixtures were analyzed by means of the isothermal titration calorimetry and the enthalpy of transfer of the copolymer from the water to the aqueous surfactant solutions. Thermodynamic models were presented to show the procedure to extract straightforward molecular insights from the bulk properties.
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Tardajos G, Montoro T, Viñas MH, Palafox MA, Guerrero-Martínez A. On the Connection between the Complexation and Aggregation Thermodynamics of Oxyethylene Nonionic Surfactants. J Phys Chem B 2008; 112:15691-700. [DOI: 10.1021/jp806883x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gloria Tardajos
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, EUIT Forestales, Universidad Politécnica de Madrid, 28040 Madrid, Spain, EUIT Informática, Universidad Politécnica de Madrid, 28031 Madrid, Spain, and Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany
| | - Teresa Montoro
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, EUIT Forestales, Universidad Politécnica de Madrid, 28040 Madrid, Spain, EUIT Informática, Universidad Politécnica de Madrid, 28031 Madrid, Spain, and Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany
| | - Montserrat H. Viñas
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, EUIT Forestales, Universidad Politécnica de Madrid, 28040 Madrid, Spain, EUIT Informática, Universidad Politécnica de Madrid, 28031 Madrid, Spain, and Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany
| | - Mauricio A. Palafox
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, EUIT Forestales, Universidad Politécnica de Madrid, 28040 Madrid, Spain, EUIT Informática, Universidad Politécnica de Madrid, 28031 Madrid, Spain, and Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany
| | - Andrés Guerrero-Martínez
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, EUIT Forestales, Universidad Politécnica de Madrid, 28040 Madrid, Spain, EUIT Informática, Universidad Politécnica de Madrid, 28031 Madrid, Spain, and Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany
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Lazzara G, Milioto S. Copolymer−Cyclodextrin Inclusion Complexes in Water and in the Solid State. A Physico-Chemical Study. J Phys Chem B 2008; 112:11887-95. [DOI: 10.1021/jp8034924] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. Lazzara
- Dipartimento di Chimica Fisica “F. Accascina”, Università degli Studi di Palermo, Viale delle Scienze, Parco D’Orleans II, 90128 Palermo, Italy
| | - S. Milioto
- Dipartimento di Chimica Fisica “F. Accascina”, Università degli Studi di Palermo, Viale delle Scienze, Parco D’Orleans II, 90128 Palermo, Italy
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