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Natchimuthu V, Thomas S, Ramalingam M, Ravi S. Influence of perfluorocarbons on Carbamazepine and Benzodiazepine for a neuro-lung protective strategy. J Clin Neurosci 2017; 43:82-88. [PMID: 28528895 DOI: 10.1016/j.jocn.2017.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 04/22/2017] [Indexed: 11/29/2022]
Abstract
Lennox-Gastaut syndrome (LGS) is commonly characterized by a triad of features including multiple seizure types, intellectual disability or regression. LGS type of seizures is epilepsy which is due to abnormal vibrations occurring in seizures. During the time of such abnormal vibrations, both the seizures and the lungs suffer a lack in oxygen content to a considerable extent. This results in prolonged vibrations and loses of nervous control. As a neuro-lung protective strategy, a novel attempt has been made to enrich both seizures and lungs with oxygen content through the support of Perfluorodecalin (an excellent oxygen carrier) C10F18 (PFD) and Perfluorohexane C6F14 (PFH) along with an enhancement in the antiepileptic activity by the two chosen antiepileptic drugs (AEDs) Carbamazepine (CBZ) and Benzodiazepine (BDZ). Perfluorodecalin C10F18 (PFD) and Perfluorohexane C6F14 (PFH) emulsions were prepared by sonication process with combination of nonionic emulsifier, Lecithin (l-α-phosphatidylcholine) as a surfactant in Aqueous phase medium. These emulsions were mixed with Carbamazepine (CBZ) and Benzodiazepine (BDZ) drugs maintained at a temperature of about -20°C to 20°C and were set to slow evaporation process. The products are subjected to Optical microscope, Transmission electron microscopy (TEM) and Scanning Electron Microscope (SEM) - Energy dispersive X-ray Spectroscopy (EDS). Study reveals the co-existence of fluorine and drug ensuring the oxygen uptake by the drug. Morphology of TEM, Optical microscopic images and the particle diameter estimated through Image_J confirms this analysis.
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Affiliation(s)
- V Natchimuthu
- PG & Research Department of Physics, National College (Affiliated to Bharathidasan University), Tiruchirappalli, Tamilnadu 620 001, India.
| | - Sabu Thomas
- International and Interuniversity Centre for Nanoscience and Nanotechnology, School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686 560, India.
| | - Murugan Ramalingam
- Associé des Universités, Faculty of Medicine, University of Strasbourg, 67085 Strasbourg Cedex, France.
| | - S Ravi
- PG & Research Department of Physics, National College (Affiliated to Bharathidasan University), Tiruchirappalli, Tamilnadu 620 001, India.
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Salama IE, Jenkins CL, Davies A, Clark JN, Wilkes AR, Hall JE, Paul A. Volatile fluorinated nanoemulsions: A chemical route to controlled delivery of inhalation Anesthesia. J Colloid Interface Sci 2015; 440:78-83. [DOI: 10.1016/j.jcis.2014.10.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 10/13/2014] [Accepted: 10/16/2014] [Indexed: 10/24/2022]
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Matsuoka K, Yamashita R, Ichinose M, Kondo M, Yoshimura T. Solubilization of naphthalene and octafluoronaphthalene in ionic hydrocarbon and fluorocarbon surfactants. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.04.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jacoby J, Pasc A, Carteret C, Dupire F, Stébé M, Coupard V, Blin J. Ordered mesoporous materials containing Mucor Miehei Lipase as biocatalyst for transesterification reaction. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.04.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Schmitt J, Impéror-Clerc M, Michaux F, Blin JL, Stébé MJ, Pedersen JS, Meneau F. Formation of nanostructured silica materials templated with nonionic fluorinated surfactant followed by in situ SAXS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:2007-2023. [PMID: 23305390 DOI: 10.1021/la304648j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The formation of two-dimensional (2D)-hexagonal (p6m) silica-based hybrid materials from concentrated micellar solutions (10 wt %) of two nonionic fluorinated surfactants, R(7)(F)(EO)(8) and R(8)(F)(EO)(9), is investigated in situ using synchrotron time-resolved small angle X-ray scattering (SAXS). The two surfactants form direct micelles with different structures prior to the silica precursor addition as demonstrated by SAXS and SANS. R(8)(F)(EO)(9) gives spherical micelles and R(7)(F)(EO)(8) more complex ones, modeled here as short wormlike micelles. The in situ SAXS experiments reveal that both surfactants form well-ordered 2D-hexagonal hybrid materials after the addition of the silica precursor, in coexistence with an excess of surfactant micelles. The structures of both 2D-hexagonal phases are compared just after precipitation, and it is found that more robust and larger silica walls are formed for R(8)(F)(EO)(9) than for R(7)(F)(EO)(8). This could explain why only the material obtained with R(8)(F)(EO)(9) is stable upon washing, as observed previously. Moreover, it is proposed that in both cases, only a part of the micelles interact with the silica oligomers and undergo structural modifications before forming the 2D-hexagonal mesophase. The obtained results are finally discussed in the more general framework of the templating mechanism for nonionic surfactants.
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Affiliation(s)
- Julien Schmitt
- Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, F-91405 Orsay, France
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Blin JL, Impéror-Clerc M. Mechanism of self-assembly in the synthesis of silica mesoporous materials: in situ studies by X-ray and neutron scattering. Chem Soc Rev 2013; 42:4071-82. [DOI: 10.1039/c2cs35362h] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Banchathanakij R, Greffier O, Bécu L, Stébé MJ, Blin JL, Decruppe JP. Rheophysical Properties of Fluorinated Nonionic Micellar Phases. J Phys Chem B 2012; 116:1544-50. [DOI: 10.1021/jp2062139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. Banchathanakij
- Laboratoire de Physique des Milieux Denses, 1 Bd. D. F. Arago IPEC,
CP87811, 57078 Metz Cedex 3, France
| | - O. Greffier
- Laboratoire de Physique des Milieux Denses, 1 Bd. D. F. Arago IPEC,
CP87811, 57078 Metz Cedex 3, France
| | - L. Bécu
- Laboratoire de Physique des Milieux Denses, 1 Bd. D. F. Arago IPEC,
CP87811, 57078 Metz Cedex 3, France
| | - M. J. Stébé
- Equipe Physico-chimie des colloïdes,
Faculté des sciences, SRSMC, UMR 7565 CNRS Nancy Université, BP 70239, 54506 Vandoeuvre les Nancy
cedex, France
| | - J. L. Blin
- Equipe Physico-chimie des colloïdes,
Faculté des sciences, SRSMC, UMR 7565 CNRS Nancy Université, BP 70239, 54506 Vandoeuvre les Nancy
cedex, France
| | - Jean P. Decruppe
- Laboratoire de Physique des Milieux Denses, 1 Bd. D. F. Arago IPEC,
CP87811, 57078 Metz Cedex 3, France
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Michaux F, Blin JL, Teixeira J, Stébé MJ. Structural Investigation of Nonionic Fluorinated Micelles by SANS in Relation to Mesoporous Silica Materials. J Phys Chem B 2011; 116:261-8. [DOI: 10.1021/jp209853r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florentin Michaux
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565, Université Nancy-1/CNRS Faculté des Sciences, BP 70239, F-54506 Vandoeuvre-les-Nancy cedex, France
| | - Jean-Luc Blin
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565, Université Nancy-1/CNRS Faculté des Sciences, BP 70239, F-54506 Vandoeuvre-les-Nancy cedex, France
| | - José Teixeira
- Laboratoire Léon Brillouin (CEA/CNRS), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Marie José Stébé
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565, Université Nancy-1/CNRS Faculté des Sciences, BP 70239, F-54506 Vandoeuvre-les-Nancy cedex, France
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Fraker CA, Mendez AJ, Stabler CL. Complementary Methods for the Determination of Dissolved Oxygen Content in Perfluorocarbon Emulsions and Other Solutions. J Phys Chem B 2011; 115:10547-52. [DOI: 10.1021/jp204146n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher A. Fraker
- Department of Biomedical Engineering, ‡Department of Surgery, and §Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Diabetes Research Institute, Leonard M. Miller School of Medicine, University of Miami, 1450 NW 10th Ave, Miami, Florida 33136, United States
| | - Armando J. Mendez
- Department of Biomedical Engineering, ‡Department of Surgery, and §Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Diabetes Research Institute, Leonard M. Miller School of Medicine, University of Miami, 1450 NW 10th Ave, Miami, Florida 33136, United States
| | - Cherie L. Stabler
- Department of Biomedical Engineering, ‡Department of Surgery, and §Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Diabetes Research Institute, Leonard M. Miller School of Medicine, University of Miami, 1450 NW 10th Ave, Miami, Florida 33136, United States
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Preparation and characterization of porous silica templated by a nonionic fluorinated systems. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2009.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Michaux F, Zoumpanioti M, Papamentzelopoulou M, Stébé MJ, Blin JL, Xenakis A. Immobilization and activity of Rhizomucor miehei lipase. Effect of the matrix properties prepared from nonionic fluorinated surfactants. Process Biochem 2010. [DOI: 10.1016/j.procbio.2009.07.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Solubilization of n-alkylbenzene and n-perfluoroalkylbenzene in hydrogenated and fluorinated surfactants micelles. J Colloid Interface Sci 2009; 333:641-5. [DOI: 10.1016/j.jcis.2009.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 02/03/2009] [Accepted: 02/04/2009] [Indexed: 11/17/2022]
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Gentilini C, Evangelista F, Rudolf P, Franchi P, Lucarini M, Pasquato L. Water-soluble gold nanoparticles protected by fluorinated amphiphilic thiolates. J Am Chem Soc 2008; 130:15678-82. [PMID: 18950162 DOI: 10.1021/ja8058364] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The preparation and the properties of gold nanoparticles (Au NPs) protected by perfluorinated amphiphiles are described. The thiols were devised to form a perfluorinated region close to the gold surface and to have a hydrophilic portion in contact with the bulk solvent to impart solubility in water. The monolayer protected clusters were prepared, in an homogeneous phase using sodium thiolates because of the low nucleophilicity of the alpha-perfluorinated thiols, and fully characterized with (1)H, (19)F NMR spectrometry, IR and UV-vis absorption spectroscopies, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Au NPs with core diameters ranging from 1.6 to 2.9 nm, depending on the reaction conditions, were obtained. Water-soluble NPs (MPC-F8-PEGs) were obtained with the thiol HS-F8-PEG ending with a short poly(ethylene glycol) unit (PEG-OMe 550), whereas thiols with shorter PEG chains give rise to NPs insoluble in water. MPC-F8-PEGs undergo an exchange reaction with amphiphilic alkyl thiols. ESR investigations, using a hydrophobic radical probe, indicate that the MPC-F8-PEG monolayer shows a greater hydrophobicity compared to the analogous hydrogenated monolayer.
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Affiliation(s)
- Cristina Gentilini
- Department of Chemical Sciences and INSTM, Trieste Unit, University of Trieste, via L. Giorgieri 1, I-34127 Trieste, Italy
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Michaux F, Blin JL, Stébé MJ. Nonionic Fluorinated−Hydrogenated Surfactants for the Design of Mesoporous Silica Materials. J Phys Chem B 2008; 112:11950-9. [DOI: 10.1021/jp8035378] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- F. Michaux
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565 Université Henri Poincaré - Nancy 1/CNRS, Faculté des Sciences, BP 239, F-54506 Vandoeuvre-les-Nancy cedex
| | - J. L. Blin
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565 Université Henri Poincaré - Nancy 1/CNRS, Faculté des Sciences, BP 239, F-54506 Vandoeuvre-les-Nancy cedex
| | - M. J. Stébé
- Equipe Physico-chimie des Colloïdes, UMR SRSMC N° 7565 Université Henri Poincaré - Nancy 1/CNRS, Faculté des Sciences, BP 239, F-54506 Vandoeuvre-les-Nancy cedex
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Gentilini C, Boccalon M, Pasquato L. Straightforward Synthesis of Fluorinated Amphiphilic Thiols. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shrestha LK, Sharma SC, Sato T, Glatter O, Aramaki K. Small-angle X-ray scattering (SAXS) study on nonionic fluorinated micelles in aqueous system. J Colloid Interface Sci 2007; 316:815-24. [PMID: 17765914 DOI: 10.1016/j.jcis.2007.08.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2007] [Revised: 07/30/2007] [Accepted: 08/01/2007] [Indexed: 11/17/2022]
Abstract
We have investigated the self-organization structures of perfluoroalkyl sulfonamide ethoxylate, C(8)F(17)SO(2)N(C(3)H(7))(CH(2)CH(2)O)(10)H, a nonionic fluorinated surfactant in aqueous system by small-angle X-ray scattering (SAXS) technique. Structural modulation of the nonionic fluorinated micelle induced by temperature change, surfactant concentration, and the added fluorinated oils have been systematically studied. The SAXS data were analyzed by the indirect Fourier transformation (IFT), and the generalized indirect Fourier transformation (GIFT) depending on the volume fraction of the surfactant. Various plausible classical model calculations have been performed to confirm the consistency of the GIFT analysis of the SAXS data. Upon successive increase in temperature, the cylindrical micelles formed at lower temperatures undergo a continuous one-dimensional growth and ultimately near the cloud point an indication of flat planar like structural pattern is observed. The evolution in structure of particle near the demixing temperature may be due to onset of attractive interactions. The shape and size of the micelle is apparently unaffected by changing the surfactant concentration from 1 to 5 wt% at 25 degrees C. Nevertheless, addition of small amount of perfluoropolyether (PFPE) oil, of structure F(CF(2)CF(2)CF(2)O)(n)CF(2)CF(2)COOH (n approximately 21) modulate the micellar shape and size. Long cylindrical micelles eventually transform into globular like particles. The onset cylinder-to-sphere transition in the structure of micelles in the surfactant/water/oil system is probably due to amphiphilic nature of the oil, which tends to increase the spontaneous curvature. The lipophilic part of the oil tends to reside in the micellar core, whereas, the hydrophilic part goes close to the polar head group of the surfactant so that effective cross-sectional area per surfactant molecules increases and as a result spherical micelles tend to form. Perfluorodecalin (PFD) also decreases size of the micelles but its effect is poor compared to the PFPE oil.
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Affiliation(s)
- Lok Kumar Shrestha
- Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai 79-7, Hodogaya-ku, Yokohama 240-8501, Japan
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