1
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Abdesselem M, Pétri N, Kuhner R, Mousseau F, Rouffiac V, Gacoin T, Laplace-Builhé C, Alexandrou A, Bouzigues CI. Real-time in vivo ROS monitoring with luminescent nanoparticles reveals skin inflammation dynamics. BIOMEDICAL OPTICS EXPRESS 2023; 14:5392-5404. [PMID: 37854553 PMCID: PMC10581786 DOI: 10.1364/boe.501914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 10/20/2023]
Abstract
Reactive oxygen species (ROS) are key regulators in numerous pathological contexts, including cancer or inflammation. Their role is complex, which justifies the need for methods enabling their quantitative and time-resolved monitoring in vivo, in the perspective to profile tissues of individual patients. However, current ROS detection methods do not provide these features. Here, we propose a new method based on the imaging of lanthanide-ion nanoparticles (GdVO4:Eu), whose photoluminescence is modulated by the surrounding ROS concentration. We monitored their luminescence after intradermic injection in a mouse ear submitted to an inflammation-inducing topical stimulus. Based on this approach, we quantified the ROS concentration after inflammation induction and identified a two-step kinetics of ROS production, which may be attributed to the response of resident immune cells and their further recruitment at the inflammation locus.
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Affiliation(s)
- M Abdesselem
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
| | - N Pétri
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
| | - R Kuhner
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
| | - F Mousseau
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
| | - V Rouffiac
- Photon Imaging and Flow Cytometry, CNRS, INSERM, Gustave Roussy Cancer Campus, 114, rue Edouard Vaillant, 94805 Villejuif Cedex, France
| | - T Gacoin
- Laboratoire de Physique de la Matière Condensée, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, 91128 Palaiseau cedex, France
| | - C Laplace-Builhé
- Photon Imaging and Flow Cytometry, CNRS, INSERM, Gustave Roussy Cancer Campus, 114, rue Edouard Vaillant, 94805 Villejuif Cedex, France
| | - A Alexandrou
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
| | - C I Bouzigues
- Laboratory for Optics and Biosciences, Ecole polytechnique, Institut Polytechnique de Paris, CNRS, INSERM, 91128 Palaiseau cedex, France
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2
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Trallero J, Camacho M, Marín-García M, Álvarez-Marimon E, Benseny-Cases N, Barnadas-Rodríguez R. Properties and cellular uptake of photo-triggered mixed metallosurfactant vesicles intended for controlled CO delivery in gas therapy. Colloids Surf B Biointerfaces 2023; 228:113422. [PMID: 37356136 DOI: 10.1016/j.colsurfb.2023.113422] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
The scientific relevance of carbon monoxide has increased since it was discovered that it is a gasotransmitter involved in several biological processes. This fact stimulated research to find a secure and targeted delivery and lead to the synthesis of CO-releasing molecules. In this paper we present a vesicular CO delivery system triggered by light composed of a synthetized metallosurfactant (TCOL10) with two long carbon chains and a molybdenum-carbonyl complex. We studied the characteristics of mixed TCOL10/phosphatidylcholine metallosomes of different sizes. Vesicles from 80 to 800 nm in diameter are mainly unilamellar, do not disaggregate upon dilution, in the dark are physically and chemically stable at 4 °C for at least one month, and exhibit a lag phase of about 4 days before they show a spontaneous CO release at 37 °C. Internalization of metallosomes by cells was studied as function of the incubation time, and vesicle concentration and size. Results show that large vesicles are more efficiently internalized than the smaller ones in terms of the percentage of cells that show TCOL10 and the amount of drug that they take up. On balance, TCOL10 metallosomes constitute a promising and viable approach for efficient delivery of CO to biological systems.
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Affiliation(s)
- Jan Trallero
- Universitat Autònoma de Barcelona, Biophysics Unit/Center for Biophysical Studies, Department of Biochemistry and Molecular Biology, Faculty of Medicine, 08193 Cerdanyola del Vallès, Spain
| | - Mercedes Camacho
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau - Centre CERCA, Genomics of Complex Diseases, Barcelona, Spain
| | - Maribel Marín-García
- Universitat Autònoma de Barcelona, Biophysics Unit/Center for Biophysical Studies, Department of Biochemistry and Molecular Biology, Faculty of Medicine, 08193 Cerdanyola del Vallès, Spain
| | - Elena Álvarez-Marimon
- Universitat Autònoma de Barcelona, Biophysics Unit/Center for Biophysical Studies, Department of Biochemistry and Molecular Biology, Faculty of Medicine, 08193 Cerdanyola del Vallès, Spain
| | - Núria Benseny-Cases
- Universitat Autònoma de Barcelona, Biophysics Unit/Center for Biophysical Studies, Department of Biochemistry and Molecular Biology, Faculty of Medicine, 08193 Cerdanyola del Vallès, Spain; Consorcio para la Construcción Equipamiento y Explotacion del Laboratorio de Luz Sincrotron, ALBA Synchrotron Light Source, 08290 Cerdanyola del Vallès, Catalonia, Spain.
| | - Ramon Barnadas-Rodríguez
- Universitat Autònoma de Barcelona, Biophysics Unit/Center for Biophysical Studies, Department of Biochemistry and Molecular Biology, Faculty of Medicine, 08193 Cerdanyola del Vallès, Spain.
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3
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Macko P, Palosaari T, Whelan M. Extrapolating from acute to chronic toxicity in vitro. Toxicol In Vitro 2021; 76:105206. [PMID: 34186185 PMCID: PMC8434427 DOI: 10.1016/j.tiv.2021.105206] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/21/2021] [Accepted: 06/24/2021] [Indexed: 12/01/2022]
Abstract
Chemical safety assessment requires information on both chronic and acute effects of toxicants. Traditionally, such information has been provided by a set of animal studies conducted over different durations, ranging from a single dose with observation of effects over a few days, to repeat daily dosing and observations made over many months. With the advent of modern mechanistic approaches to toxicology, the role of in vitro studies within alternative approaches has never been more prominent. Typical in vitro experiments are conducted over short durations with measurements of response at a single time point, with a focus on providing effect and concentration-response information as input to hazard and risk assessment. This limits the usefulness of such data since potential chronic effects that cumulate over time are not usually considered. To address this, an experimental design is presented to characterise the toxicodynamics of a response not only in terms of concentration, but also as a function of time. Generation of concentration-time-effect responses allows both the extrapolation of points of departure from an acute to chronic exposure, and the determination of a chronicity index that provides a quantitative measure of a chemical's potential to cause cumulative effects over time. In addition, the approach provides a means to characterise the dynamics of key event relationships for the development of quantitative adverse outcome pathways.
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Affiliation(s)
- Peter Macko
- European Commission, Joint Research Centre (JRC), Ispra, Italy.
| | - Taina Palosaari
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Maurice Whelan
- European Commission, Joint Research Centre (JRC), Ispra, Italy
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4
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Lapuk SE, Mukhametzyanov TA, Schick C, Gerasimov AV. Crystallization kinetics and glass-forming ability of rapidly crystallizing drugs studied by Fast Scanning Calorimetry. Int J Pharm 2021; 599:120427. [PMID: 33662469 DOI: 10.1016/j.ijpharm.2021.120427] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/09/2021] [Accepted: 02/20/2021] [Indexed: 11/16/2022]
Abstract
The use of the amorphous forms of drugs is a modern approach for the enhancement of bioavailability. At the same time, the high cooling rate needed to obtain the metastable amorphous state often prevents its investigation using conventional laboratory methods such as differential scanning calorimetry, X-ray powder diffractometry. One of the ways to overcome this problem may be the application of Fast Scanning Calorimetry. This method allows direct determination of the critical cooling rate of the melt and kinetic parameters of the crystallization for bad glass formers. In the present work, the amorphous states of dopamine hydrochloride and atenolol were created using Fast Scanning Calorimetry for the first time. Critical cooling rates and glass transition temperatures of these drugs were determined. Based on the values of the kinetic fragility parameter, dopamine hydrochloride glass can be considered strong, while atenolol glass is moderately strong. Both model-based and model-free approaches were employed to determine the kinetic parameters of cold crystallization of dopamine and atenolol. The results were compared with the data from isothermal crystallization experiments. The Nakamura crystallization model provides the best description of the crystallization process and can be used to predict the long term stability of the amorphous forms of the drugs. The presented approaches may find applications in predicting the storage time and choosing the optimal storage conditions of the amorphous drugs prone to crystallization.
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Affiliation(s)
- S E Lapuk
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, 420008, Kremlevskaya, 18, Kazan, Russia
| | - T A Mukhametzyanov
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, 420008, Kremlevskaya, 18, Kazan, Russia
| | - C Schick
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, 420008, Kremlevskaya, 18, Kazan, Russia
| | - A V Gerasimov
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, 420008, Kremlevskaya, 18, Kazan, Russia.
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5
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Ellis CLC, Javaid H, Smith EC, Venkataraman D. Hybrid Perovskites with Larger Organic Cations Reveal Autocatalytic Degradation Kinetics and Increased Stability under Light. Inorg Chem 2020; 59:12176-12186. [DOI: 10.1021/acs.inorgchem.0c01133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christie L. C. Ellis
- University of Massachusetts Amherst, Department of Chemistry, 690 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Hamza Javaid
- University of Massachusetts Amherst, Department of Chemistry, 690 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Emily C. Smith
- University of Massachusetts Amherst, Department of Chemistry, 690 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - D. Venkataraman
- University of Massachusetts Amherst, Department of Chemistry, 690 North Pleasant Street, Amherst, Massachusetts 01003, United States
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6
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Lapuk S, Mukhametzyanov T, Schick C, Gerasimov A. Kinetic stability of amorphous dipyridamole: A fast scanning calorimetry investigation. Int J Pharm 2020; 574:118890. [DOI: 10.1016/j.ijpharm.2019.118890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 01/10/2023]
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7
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Yavari M, Ebrahimi S, Aghazadeh V, Ghashghaee M. Kinetics of different bioreactor systems with Acidithiobacillus ferrooxidans for ferrous iron oxidation. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01660-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Abstract
The relative performance of two biofilm-based airlift reactors using different kinds of packing materials and one fixed bed biofilm reactor with a homemade packing material of high specific area (~ 1000 m2/m3) was addressed. The bioreactors operated under ferrous iron loading rates in the range of 8–120 mol Fe(II)/m3 h. Acidithiobacillus ferrooxidans cells immobilized in the three bioreactors afforded the reactions for an extended period of 120 days of continuous operation at the dilution rates of 0.2, 0.4, 0.7, 1 and 1.2 h−1. The maximum ferrous iron oxidation rates achieved in this study at a hydraulic residence time of 1.2 h were about 91, 68 and 51 mol Fe(II)/m3 h for the fixed bed, airlift1, and airlft2 bioreactors. The performance data from the fixed-bed bioreactor offered a higher potential for ferrous iron oxidation because of fast biofilm development, the formation of a thick biofilm, and lower sensitivity to shear, which enhanced the startup time of the bioreactor and the higher reactor productivity. Proper kinetic models were also presented for both the startup period and the steady-state process.
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8
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Roduit B, Luyet CA, Hartmann M, Folly P, Sarbach A, Dejeaifve A, Dobson R, Schroeter N, Vorlet O, Dabros M, Baltensperger R. Continuous Monitoring of Shelf Lives of Materials by Application of Data Loggers with Implemented Kinetic Parameters. Molecules 2019; 24:molecules24122217. [PMID: 31200557 PMCID: PMC6631491 DOI: 10.3390/molecules24122217] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 11/29/2022] Open
Abstract
The evaluation of the shelf life of, for example, food, pharmaceutical materials, polymers, and energetic materials at room or daily climate fluctuation temperatures requires kinetic analysis in temperature ranges which are as similar as possible to those at which the products will be stored or transported in. A comparison of the results of the evaluation of the shelf life of a propellant and a vaccine calculated by advanced kinetics and simplified 0th and 1st order kinetic models is presented. The obtained simulations show that the application of simplified kinetics or the commonly used mean kinetic temperature approach may result in an imprecise estimation of the shelf life. The implementation of the kinetic parameters obtained from advanced kinetic analyses into programmable data loggers allows the continuous online evaluation and display on a smartphone of the current extent of the deterioration of materials. The proposed approach is universal and can be used for any goods, any methods of shelf life determination, and any type of data loggers. Presented in this study, the continuous evaluation of the shelf life of perishable goods based on the Internet of Things (IoT) paradigm helps in the optimal storage/shipment and results in a significant decrease of waste.
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Affiliation(s)
| | | | | | - Patrick Folly
- armasuisse, Science and Technology Centre, 3602 Thun, Switzerland.
| | | | - Alain Dejeaifve
- PB Clermont EURENCO Group, Rue de Clermont, 176-4480 Engis, Belgium.
| | - Rowan Dobson
- PB Clermont EURENCO Group, Rue de Clermont, 176-4480 Engis, Belgium.
| | - Nicolas Schroeter
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Olivier Vorlet
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Michal Dabros
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Richard Baltensperger
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
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9
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Bushuev MB, Krivopalov VP, Nikolaenkova EB, Vinogradova KA, Gatilov YV. Hysteretic spin crossover in isomeric iron(ii) complexes. Dalton Trans 2018; 47:9585-9591. [PMID: 29978158 DOI: 10.1039/c8dt02223b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two mononuclear iron(ii) complexes with isomeric N,N,N-tridentate pyrimidine-based ligands were synthesized. Both complexes show reproducible hysteretic spin crossover. Low spin state to high spin state switching is cooperative due to autocatalysis.
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Affiliation(s)
- Mark B Bushuev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
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10
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Zhao L, Kang L, Chen Y, Li G, Wang L, Hu C, Yang P. Spectral study on conformation switchable cationic calix[4]carbazole serving as curcumin container, stabilizer and sustained-delivery carrier. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:276-282. [PMID: 29258022 DOI: 10.1016/j.saa.2017.12.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/08/2017] [Accepted: 12/09/2017] [Indexed: 06/07/2023]
Abstract
A fluorescent 2,7-dimethoxy-substituted calix[4]carbazole (1) is facilely synthesized. The spectral behaviors of both the guest-induced switchable conformation of 1 and its abilities serving as the stabilizer and molecular carrier of curcumin are investigated. UV-vis, fluorescence and NMR spectral results show that upon binding to curcumin, the 1,3-alternate conformation of 1 is converted to be the cone one. The relative high association constant (6.4×106M-1) of 1 binding to curcumin enables it to stabilize the curcumin, to suppress its degradation, and to sustainably deliver it into the EYPC vesicles within 20h. Moreover, the cytotoxicity assay shows that 1 does not interfere the antiproliferative activities of curcumin. All these properties endow 1 the potential capability of serving as the molecular drug carrier. Our current result may pave the way looking for more efficient fluorescent calixcarbazoles and thereof spectral utilities.
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Affiliation(s)
- Liang Zhao
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China; Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Le Kang
- College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yan Chen
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China; Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Gang Li
- Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Lan Wang
- Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chun Hu
- Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Peng Yang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China; Key Laboratory of Structure-based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
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11
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Shete G, Modi SR, Bansal AK. Effect of Mannitol on Nucleation and Crystal Growth of Amorphous Flavonoids: Implications on the Formation of Nanocrystalline Solid Dispersion. J Pharm Sci 2015; 104:3789-3797. [PMID: 26183113 DOI: 10.1002/jps.24586] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/16/2015] [Accepted: 06/26/2015] [Indexed: 12/14/2022]
Abstract
In this work, we studied crystallization kinetics of amorphous hesperetin (HRN) and naringenin (NRN) alone, and in 1:1 proportion with mannitol at Tg + 15 K. Crystallization rate of NRN was found to be significantly higher than HRN. Mannitol accelerated crystallization of HRN as well as NRN. NRN exhibited higher crystallization rate than HRN, in presence of mannitol, as well. Finke-Watzky model was used to deconvolute the crystallization kinetics data into nucleation and crystal growth rate constant. HRN alone had 9.56 × 10(9) times faster nucleation rate and 1.88 times slower crystal growth than NRN alone. Mannitol increased nucleation and crystal growth rate of HRN as well as NRN. In presence of mannitol, HRN possessed 1.34 × 10(10) times faster nucleation rate and 1.70 times slower crystal growth rate than NRN. Differences in crystallization behavior of HRN and NRN were explained by their thermodynamic properties.
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Affiliation(s)
- Ganesh Shete
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Punjab 160 062, India
| | - Sameer R Modi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Punjab 160 062, India
| | - Arvind Kumar Bansal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Punjab 160 062, India.
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12
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Cui P, Yin Q, Guo Y, Gong J. Polymorphic Crystallization and Transformation of Candesartan Cilexetil. Ind Eng Chem Res 2012. [DOI: 10.1021/ie2024855] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Penglei Cui
- School of Chemical Engineering and
Technology, State Key Laboratory of Chemical Engineering, Tianjin
University, Tianjin 300072, People’s Republic of China
| | - Qiuxiang Yin
- School of Chemical Engineering and
Technology, State Key Laboratory of Chemical Engineering, Tianjin
University, Tianjin 300072, People’s Republic of China
| | - Yuhong Guo
- School of Chemical Engineering and
Technology, State Key Laboratory of Chemical Engineering, Tianjin
University, Tianjin 300072, People’s Republic of China
| | - Junbo Gong
- School of Chemical Engineering and
Technology, State Key Laboratory of Chemical Engineering, Tianjin
University, Tianjin 300072, People’s Republic of China
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13
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A curvilinear approach to the kinetic analysis of linoleate peroxidation in aqueous liposomes by 2,2′azobis(2-amidoinopropane) dihydrochloride. Chem Phys Lipids 2012; 165:682-8. [DOI: 10.1016/j.chemphyslip.2012.07.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 06/27/2012] [Accepted: 07/16/2012] [Indexed: 11/22/2022]
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14
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Implementing Quality by Design in Pharmaceutical Salt Selection: A Modeling Approach to Understanding Disproportionation. Pharm Res 2012; 30:203-17. [DOI: 10.1007/s11095-012-0863-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 08/09/2012] [Indexed: 10/28/2022]
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15
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Lobb KA, Kaye PT. 1
H NMR-based kinetic and mechanistic study of unusual skeletal rearrangements of a spirobornyl tosylate derivative. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1699] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Brits M, Liebenberg W, de Villiers MM. Characterization of polymorph transformations that decrease the stability of tablets containing the WHO essential drug mebendazole. J Pharm Sci 2010; 99:1138-51. [DOI: 10.1002/jps.21899] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Dimitrov I, Valchev I, Valcheva E. Topochemical kinetics of xylanase action on kraft pulp. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420500043697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Lo Nostro P, Giustini L, Fratini E, Ninham BW, Ridi F, Baglioni P. Threading, Growth, and Aggregation of Pseudopolyrotaxanes. J Phys Chem B 2008; 112:1071-81. [DOI: 10.1021/jp075380q] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierandrea Lo Nostro
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Luca Giustini
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Emiliano Fratini
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Barry W. Ninham
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Francesca Ridi
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Piero Baglioni
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
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19
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Khawam A, Flanagan DR. Solid-state kinetic models: basics and mathematical fundamentals. J Phys Chem B 2007; 110:17315-28. [PMID: 16942065 DOI: 10.1021/jp062746a] [Citation(s) in RCA: 494] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Many solid-state kinetic models have been developed in the past century. Some models were based on mechanistic grounds while others lacked theoretical justification and some were theoretically incorrect. Models currently used in solid-state kinetic studies are classified according to their mechanistic basis as nucleation, geometrical contraction, diffusion, and reaction order. This work summarizes commonly employed models and presents their mathematical development.
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Affiliation(s)
- Ammar Khawam
- Division of Pharmaceutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, USA
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Liu T, Simmons TL, Bohnsack DA, Mackay ME, Smith MR, Baker GL. Synthesis of Polymandelide: A Degradable Polylactide Derivative with Polystyrene-like Properties. Macromolecules 2007. [DOI: 10.1021/ma061839n] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tianqi Liu
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
| | - Tara L. Simmons
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
| | - David A. Bohnsack
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
| | - Michael E. Mackay
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
| | - Milton R. Smith
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
| | - Gregory L. Baker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226
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Skrdla PJ. A Collision Theory-Based Derivation of Semiempirical Equations for Modeling Dispersive Kinetics and Their Application to a Mixed-Phase Crystal Decomposition. J Phys Chem A 2006; 110:11494-500. [PMID: 17020262 DOI: 10.1021/jp063534g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In recent works, the author has shown the utility of new, semiempirical kinetic model equations for treating dispersive chemical processes ranging from slow (minute/hour time scale) solid-state phase transformations to ultrafast (femtosecond) reactions in the gas phase. These two fundamental models (one for homogeneous/deceleratory sigmoidal conversion kinetics and the other for heterogeneous/acceleratory sigmoidal kinetics; isothermal conditions), based on the assumption of a "Maxwell-Boltzmann-like" distribution of molecular activation energies, provide a novel, quantum-based interpretation of the kinetics. As an extension to previous work, it is shown here that the derivation of these dispersive kinetic equations is supported by classical collision theory (i.e., for gas-phase applications). Furthermore, the successful application of the approach to the kinetic modeling of the solid-state decomposition of a binary system, CO2.C2H2, is demonstrated. Finally, the models derived appear to explain some of the (solid-state) kinetic data collected using isoconversional techniques such as those often reported in the thermal analysis literature.
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Skrdla PJ, Robertson RT. Semiempirical Equations for Modeling Solid-State Kinetics Based on a Maxwell−Boltzmann Distribution of Activation Energies: Applications to a Polymorphic Transformation under Crystallization Slurry Conditions and to the Thermal Decomposition of AgMnO4 Crystals. J Phys Chem B 2005; 109:10611-9. [PMID: 16852288 DOI: 10.1021/jp045268h] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Many solid-state reactions and phase transformations performed under isothermal conditions give rise to asymmetric, sigmoidally shaped conversion-time (x-t) profiles. The mathematical treatment of such curves, as well as their physical interpretation, is often challenging. In this work, the functional form of a Maxwell-Boltzmann (M-B) distribution is used to describe the distribution of activation energies for the reagent solids, which, when coupled with an integrated first-order rate expression, yields a novel semiempirical equation that may offer better success in the modeling of solid-state kinetics. In this approach, the Arrhenius equation is used to relate the distribution of activation energies to a corresponding distribution of rate constants for the individual molecules in the reagent solids. This distribution of molecular rate constants is then correlated to the (observable) reaction time in the derivation of the model equation. In addition to providing a versatile treatment for asymmetric, sigmoidal reaction curves, another key advantage of our equation over other models is that the start time of conversion is uniquely defined at t = 0. We demonstrate the ability of our simple, two-parameter equation to successfully model the experimental x-t data for the polymorphic transformation of a pharmaceutical compound under crystallization slurry (i.e., heterogeneous) conditions. Additionally, we use a modification of this equation to model the kinetics of a historically significant, homogeneous solid-state reaction: the thermal decomposition of AgMnO4 crystals. The potential broad applicability of our statistical (i.e., dispersive) kinetic approach makes it a potentially attractive alternative to existing models/approaches.
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Affiliation(s)
- Peter J Skrdla
- Merck & Company, Inc., P.O. Box 2000, RY818-B221, Rahway, New Jersey 07065-0900, USA.
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Skrdla PJ. Use of Coupled Rate Equations To Describe Nucleation-and-Branching Rate-Limited Solid-State Processes. J Phys Chem A 2004. [DOI: 10.1021/jp0487758] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter J. Skrdla
- Merck & Co., Inc., P.O. Box 2000, RY818-B221, Rahway, New Jersey 07065-0900
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Abstract
The book "Chemistry of the Solid State", edited by W.E. Garner more than 50 years ago, contained a chapter (Chapter 10) by C.E.H. Bawn which dealt with the kinetics of the thermal decompositions of solids that are accompanied by some melting. Rate equations were derived and this model has become known as the Bawn model or as "Bawn kinetics". This kinetic model has proved particularly useful in pharmaceutical stability studies. The isothermal curves of extent of decomposition, alpha, against time for this model are sigmoidal and the problems of distinguishing this model from other sigmoidal models (Prout-Tompkins, Avrami-Erofeev) have been examined. Under programmed temperature conditions, distinguishability becomes even more difficult.
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Affiliation(s)
- Michael E Brown
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
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