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Queiroz LHS, Barros RS, de Sousa FF, Lage MR, Sarraguça MC, Ribeiro PRS. Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental-Theoretical Study. Mol Pharm 2024; 21:1272-1284. [PMID: 38361428 DOI: 10.1021/acs.molpharmaceut.3c00947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Rifampicin (RIF) is an antibiotic used to treat tuberculosis and leprosy. Even though RIF is a market-available drug, it has a low aqueous solubility, hindering its bioavailability. Among the strategies for bioavailability improvement of poorly soluble drugs, coamorphous systems have been revealed as an alternative in the increase of the aqueous solubility of drug systems and at the same time also increasing the amorphous state stability and dissolution rate when compared with the neat drug. In this work, a new coamorphous form from RIF and tromethamine (TRIS) was synthesized by slow evaporation. Structural, electronic, and thermodynamic properties and solvation effects, as well as drug-coformer intermolecular interactions, were studied through density functional theory (DFT) calculations. Powder X-ray diffraction (PXRD) data allowed us to verify the formation of a new coamorphous. In addition, the DFT study indicates a possible intermolecular interaction by hydrogen bonds between the available amino and carbonyl groups of RIF and the hydroxyl and amino groups of TRIS. The theoretical spectra obtained are in good agreement with the experimental data, suggesting the main interactions occurring in the formation of the coamorphous system. PXRD was used to study the physical stability of the coamorphous system under accelerated ICH conditions (40 °C and 75% RH), indicating that the material remained in an amorphous state up to 180 days. The thermogravimetry result of this material showed a good thermal stability up to 153 °C, and differential scanning calorimetry showed that the glass temperature (Tg) was at 70.0 °C. Solubility studies demonstrated an increase in the solubility of RIF by 5.5-fold when compared with its crystalline counterpart. Therefore, this new material presents critical parameters that can be considered in the development of new coamorphous formulations.
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Affiliation(s)
- Luís H S Queiroz
- NUPFARQ, Programa de Pós-Graduação em Ciência dos Materiais (PPGCM), Centro de Ciências de Imperatriz (CCIM), Universidade Federal do Maranhão (UFMA), Imperatriz, Maranhão 65.900-410, Brazil
| | - Ranna S Barros
- NUPFARQ, Programa de Pós-Graduação em Ciência dos Materiais (PPGCM), Centro de Ciências de Imperatriz (CCIM), Universidade Federal do Maranhão (UFMA), Imperatriz, Maranhão 65.900-410, Brazil
| | - Francisco F de Sousa
- Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará (UFPA), Belém, Pará 65.075-110, Brazil
| | - Mateus R Lage
- NUPFARQ, Programa de Pós-Graduação em Ciência dos Materiais (PPGCM), Centro de Ciências de Imperatriz (CCIM), Universidade Federal do Maranhão (UFMA), Imperatriz, Maranhão 65.900-410, Brazil
- Coordenação do Curso de Ciência e Tecnologia, Centro de Ciências de Balsas, Universidade Federal do Maranhão (UFMA), Balsas, Maranhão 65.800-000, Brazil
| | - Mafalda C Sarraguça
- LAQV, REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Faculty of Pharmacy, Porto University, Rua de Jorge Viterbo Ferreira, 228, Porto 4050-313, Portugal
| | - Paulo R S Ribeiro
- NUPFARQ, Programa de Pós-Graduação em Ciência dos Materiais (PPGCM), Centro de Ciências de Imperatriz (CCIM), Universidade Federal do Maranhão (UFMA), Imperatriz, Maranhão 65.900-410, Brazil
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Agieienko V, Neklyudov V, Buchner R. Typical at glance but interesting when analyzed in detail: A story of Tris hydration. J Chem Phys 2022; 157:224204. [PMID: 36546815 DOI: 10.1063/5.0128391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This paper provides results of dielectric relaxation (DR) spectroscopy of aqueous solutions of tris(hydroxymethyl)aminomethane (Tris) covering frequencies of 0.05 ≤ ν/GHz ≤89. The DR spectra can be well fit by a sum of Cole-Cole relaxation, assigned to the solute, and 2 Debye modes already observed for neat water. Analysis of the amplitudes reveals that Tris is hydrated by 7 H2Os up to its solubility limit. However, the rather high effective solute dipole moment of ≈12 D suggests that H2O dipoles in contact with Tris should reorient independently from it. Accordingly, an alternative description of the DR spectra with a superposition of 4 Debyerelaxations was attempted. In this model, the slowest mode at ∼4 GHz arises from solute reorientation and that at ∼8 GHz was assigned to dynamically retarded hydration water, whereas relaxations at ∼18 and ∼500 GHz are again those of (rather unperturbed) bulk water. Analysis of the solvent-related modes shows that Tris indeed slows down 7-8 H2O molecules. However, the solute-solvent interaction strength is rather weak, excluding the rotation of an alleged Tris-(7-8) H2O cluster as an entity. The now derived effective dipole moment of (6.3 ± 0.5) D for the bare Tris molecule allows speculations on its conformation. With the help of computational methods, we suggest that Tris dissolved in water most likely possesses an intramolecular H-bond between the nitrogen and hydrogen atoms of amino and hydroxyl groups, respectively. In addition, computational results indicate that the seven hydration H2Os found by DR bind directly to the Tris OH groups.
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Affiliation(s)
- V Agieienko
- Laboratory of Membrane and Catalytic Processes, Nanotechnology and Biotechnology Department, Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 24 Minina Str., 603950 Nizhny Novgorod, Russian Federation
| | - V Neklyudov
- Wolfson Department of Chemical Engineering, Technion-IIT, Haifa 32000, Israel
| | - R Buchner
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93040 Regensburg, Germany
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Zhu Y, Derami HG, Gupta P, Gupta R, Singamaneni S, Jun YS. Ionic surface propensity controls pH in nanopores. Chem 2022. [DOI: 10.1016/j.chempr.2022.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Guilger-Casagrande M, Germano-Costa T, Bilesky-José N, Pasquoto-Stigliani T, Carvalho L, Fraceto LF, de Lima R. Influence of the capping of biogenic silver nanoparticles on their toxicity and mechanism of action towards Sclerotinia sclerotiorum. J Nanobiotechnology 2021; 19:53. [PMID: 33627148 PMCID: PMC7903788 DOI: 10.1186/s12951-021-00797-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/08/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Biogenic nanoparticles possess a capping of biomolecules derived from the organism employed in the synthesis, which contributes to their stability and biological activity. These nanoparticles have been highlighted for the control of phytopathogens, so there is a need to understand their composition, mechanisms of action, and toxicity. This study aimed to investigate the importance of the capping and compare the effects of capped and uncapped biogenic silver nanoparticles synthesized using the filtrate of Trichoderma harzianum against the phytopathogenic fungus Sclerotinia sclerotiorum. Capping removal, investigation of the composition of the capping and physico-chemical characterization of the capped and uncapped nanoparticles were performed. The effects of the nanoparticles on S. sclerotiorum were evaluated in vitro. Cytotoxicity and genotoxicity of the nanoparticles on different cell lines and its effects on nontarget microorganisms were also investigated. RESULTS The capped and uncapped nanoparticles showed spherical morphology, with greater diameter of the uncapped ones. Functional groups of biomolecules, protein bands and the hydrolytic enzymes NAGase, β-1,3-glucanase, chitinase and acid protease from T. harzianum were detected in the capping. The capped nanoparticles showed great inhibitory potential against S. sclerotiorum, while the uncapped nanoparticles were ineffective. There was no difference in cytotoxicity comparing capped and uncapped nanoparticles, however higher genotoxicity of the uncapped nanoparticles was observed towards the cell lines. Regarding the effects on nontarget microorganisms, in the minimal inhibitory concentration assay only the capped nanoparticles inhibited microorganisms of agricultural importance, while in the molecular analysis of the soil microbiota there were major changes in the soils exposed to the uncapped nanoparticles. CONCLUSIONS The results suggest that the capping played an important role in controlling nanoparticle size and contributed to the biological activity of the nanoparticles against S. sclerotiorum. This study opens perspectives for investigations concerning the application of these nanoparticles for the control of phytopathogens.
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Affiliation(s)
- Mariana Guilger-Casagrande
- Laboratory for Evaluation of the Bioactivity and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo, Brazil
- Laboratory of Environmental Nanotechnology, São Paulo State University, Sorocaba, São Paulo, Brazil
| | - Taís Germano-Costa
- Laboratory for Evaluation of the Bioactivity and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo, Brazil
| | - Natália Bilesky-José
- Laboratory for Evaluation of the Bioactivity and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo, Brazil
| | - Tatiane Pasquoto-Stigliani
- Laboratory for Evaluation of the Bioactivity and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo, Brazil
| | - Lucas Carvalho
- Laboratory of Environmental Nanotechnology, São Paulo State University, Sorocaba, São Paulo, Brazil
| | - Leonardo F Fraceto
- Laboratory of Environmental Nanotechnology, São Paulo State University, Sorocaba, São Paulo, Brazil
| | - Renata de Lima
- Laboratory for Evaluation of the Bioactivity and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo, Brazil.
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Ludmerczki R, Malfatti L, Stagi L, Meloni M, Carbonaro CM, Casula MF, Bogdán D, Mura S, Mándity IM, Innocenzi P. Polymerization-Driven Photoluminescence in Alkanolamine-Based C-Dots. Chemistry 2021; 27:2543-2550. [PMID: 33196126 DOI: 10.1002/chem.202004465] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/03/2020] [Indexed: 01/06/2023]
Abstract
Carbonized polymer dots (CPDs), a peculiar type of carbon dots, show extremely high quantum yields, making them very attractive nanostructures for application in optics and biophotonics. The origin of the strong photoluminescence of CPDs resides in a complicated interplay of several radiative mechanisms. To understand the correlation between CPD processing and properties, the early stage formation of carbonized polymer dots has been studied. In the synthesis, citric acid monohydrate and 2-amino-2-(hydroxymethyl)propane-1,3-diol have been thermally degraded at 180 °C. The use of an oil bath instead of a more traditional hydrothermal reactor has allowed the CPD properties to be monitored at different reactions times. Transmission electron microscopy, time-resolved photoluminescence, nuclear magnetic resonance, infrared, and Raman spectroscopy have revealed the formation of polymeric species with amide and ester bonds. Quantum chemistry calculations have been employed to investigate the origin of CPD electronic transitions. At short reaction times, amorphous C-dots with 80 % quantum yield, have been obtained.
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Affiliation(s)
- Robert Ludmerczki
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Luca Malfatti
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Luigi Stagi
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Manuela Meloni
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Carlo Maria Carbonaro
- Department of Physics, University of Cagliari, sp 8, km 0.700, 09042, Monserrato, Italy
| | - Maria Francesca Casula
- DIMCM-Department of Mechanical, Chemical, and Materials Engineering, INSTM, University of Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Dóra Bogdán
- Department of Organic Chemistry, Semmelweis University, Hőgyes Endre St. 7, 1092, Budapest, Hungary.,MTA TTK Lendület Artificial Transporter Research Group, Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok krt. 2, 1117, Budapest, Hungary
| | - Stefania Mura
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - István M Mándity
- Department of Organic Chemistry, Semmelweis University, Hőgyes Endre St. 7, 1092, Budapest, Hungary.,MTA TTK Lendület Artificial Transporter Research Group, Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok krt. 2, 1117, Budapest, Hungary
| | - Plinio Innocenzi
- Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
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Li S, Li Q, Wang K, Tan X, Zhou M, Li B, Liu B, Zou G, Zou B. Pressure-Induced Phase Transition in Guanidinium Perchlorate: A Supramolecular Structure Directed by Hydrogen Bonding and Electrostatic Interactions. J Phys Chem B 2011; 115:11816-22. [DOI: 10.1021/jp207143f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shourui Li
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Qian Li
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Xiao Tan
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Mi Zhou
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Bing Li
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Bingbing Liu
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Guangtian Zou
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
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Wang K, Duan D, Zhou M, Li S, Cui T, Liu B, Liu J, Zou B, Zou G. Structural properties and halogen bonds of cyanuric chloride under high pressure. J Phys Chem B 2011; 115:4639-44. [PMID: 21452885 DOI: 10.1021/jp200966n] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The effects of high pressure on cyanuric chloride (C(3)N(3)Cl(3)), a remarkable crystal structure dominated by halogen bonds, have been studied by synchrotron X-ray diffraction and Raman spectroscopy in a diamond anvil cell. The results of high pressure experiments revealed that there was no obvious phase transition up to 30 GPa, indicating that halogen bonding is an effective noncovalent interaction to stabilize the crystal structure. Moreover, cyanuric chloride exhibited a high compressibility and a strong anisotropic compression, which can be explained by the layered crystal packing. Ab initio calculations were also performed to account for the high pressure Raman spectra and the high pressure behavior of halogen bonding.
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Affiliation(s)
- Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University, Changchun, China
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