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El Abed A, El Qebbaj SE, Guérin M, Kappenstein C, Dexpert H, Villain F. In situ EXAFS studies of Pt-Sn/Al2O3 catalysts prepared by a new procedure. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1997940054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Clause O, Bonneviot L, Che M, Verdaguer M, Villain F, Bazin D, Dexpert H. Contrôle des étapes d’adsorption électrostatique et de greffage du complexe bis (éthylénediamine) cuivre(II) sur un gel de silice. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1989861767] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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André P, Villain F. Free radical scavenging properties of mannitol and its role as a constituent of hyaluronic acid fillers: a literature review. Int J Cosmet Sci 2017; 39:355-360. [PMID: 28027572 DOI: 10.1111/ics.12386] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/21/2016] [Indexed: 12/01/2022]
Abstract
Mannitol has both hydrating and antioxidant properties that make it an ideal excipient for use with hyaluronic acid (HA) fillers. This review examines the role of reactive oxygen species in the ageing process and their effects on both endogenous HA and HA products developed for aesthetic use. Evidence is presented to show that the free radical scavenging properties of mannitol provide it with a two-fold mechanism of action when combined with HA fillers: reducing the inflammation and swelling associated with the injection procedure itself, and preventing the degradation of the injected HA by free radicals. Mannitol also has a long- and well-established safety profile in both the food and pharmaceutical industry. Having established the rationale for using mannitol in combination with an HA filler, the products using this strategy are then reviewed. The addition of mannitol to HA fillers is a viable and safe option for improving both short- and long-term HA aesthetic effects.
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Affiliation(s)
- P André
- Paris-Université Laser Skin Clinic, 157, rue de l'Université, 75007, Paris, France
| | - F Villain
- Merz Pharmaceuticals GmbH, 100 Eckenheimer Landstrasse, 60318, Frankfurt am Main, Germany
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Seredyuk M, Gaspar AB, Ksenofontov V, Galyametdinov Y, Verdaguer M, Villain F, Gütlich P. Spin-Crossover and Liquid Crystal Properties in 2D Cyanide-Bridged FeII−MI/II Metalorganic Frameworks. Inorg Chem 2010; 49:10022-31. [DOI: 10.1021/ic101304v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Seredyuk
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
| | - A. B. Gaspar
- Institut de Ciència Molecular (ICMOL)/Departament de Química Inorgànica, Universitat de València, Edifici de Instituts de Paterna, Apartat de Correus 22085, 46071 València, Spain
| | - V. Ksenofontov
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
| | - Y. Galyametdinov
- Kazan Physical Technical Institute, Russian Academy of Science, Sibirsky Tract 10/7, 420029, Kazan, Russia
| | - M. Verdaguer
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201, FR-CNRS 2769, Université Pierre et Marie Curie, 4 place Jussieu, case courrier 42, 75252 Paris Cedex 05, France
| | - F. Villain
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201, FR-CNRS 2769, Université Pierre et Marie Curie, 4 place Jussieu, case courrier 42, 75252 Paris Cedex 05, France
| | - P. Gütlich
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
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Mhamdi M, Marceau E, Khaddar-Zine S, Ghorbel A, Che M, Taarit YB, Villain F. Preparation of Co2+/ZSM5 Catalysts by Solid-State Reaction: Influence of the Precursor on Cobalt Speciation. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zpch.219.7.963.67087] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Co2+/ZSM5 catalysts (Co/Al = 1, overstoichiometric ratio) have been prepared by solid-state reaction at 500 °C in argon from H-ZSM5 and four Co(II) precursors: formate, nitrate, chloride and acetate. Co3O4 particles supported by the zeolite grains are the only cobalt-containing phases detected when formate is used. When cobalt nitrate is the precursor, Co3O4 particles appear to be independent from the grains. A fraction of cobalt has nevertheless migrated into the zeolite; this is linked with [Co(H2O)6](NO3)2 low melting point and wetting of the zeolite grains by the molten salt at the beginning of the thermal treatment. Catalysts prepared from cobalt chloride contain both nanometric Co3O4 particles on the support grains and cobalt ions inside the zeolitic channels. Ion exchange is possible, at least partly, due to the fact that unlike nitrate and formate, cobalt chloride has not decomposed before reaching the temperature at which the exchange process is activated. This process is chemically driven by the release of HCl in the gas phase. Finally, the major phase detected when cobalt acetate is the precursor is a poorly organized cobalt phyllosilicate surrounding zeolite grains. Acetate ions attack the zeolitic framework from outside during the solid-state reaction; cobalt ions are inserted in the silicate matrix and progressively migrate deeper in the grains upon thermal activation.
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Seredyuk M, Gaspar AB, Ksenofontov V, Verdaguer M, Villain F, Gütlich P. Thermal- and Light-Induced Spin Crossover in Novel 2D Fe(II) Metalorganic Frameworks {Fe(4-PhPy)2[MII(CN)x]y}·sH2O: Spectroscopic, Structural, and Magnetic Studies. Inorg Chem 2009; 48:6130-41. [DOI: 10.1021/ic900491r] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Seredyuk
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
| | - A. B. Gaspar
- Institut de Ciència Molecular (ICMOL)/Departament de Química Inorgànica, Universitat de València, Edifici de Instituts de Paterna, Apartat de Correus 22085, 46071 València, Spain
| | - V. Ksenofontov
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
| | - M. Verdaguer
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201, FR-CNRS 2769, Université Pierre et Marie Curie, 4 place Jussieu, case courrier 42, 75252 Paris Cedex 05, France
| | - F. Villain
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201, FR-CNRS 2769, Université Pierre et Marie Curie, 4 place Jussieu, case courrier 42, 75252 Paris Cedex 05, France
| | - P. Gütlich
- Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, D-55099 Mainz, Germany
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Seredyuk M, Gaspar AB, Ksenofontov V, Galyametdinov Y, Verdaguer M, Villain F, Gütlich P. One-Dimensional Iron(II) Compounds Exhibiting Spin Crossover and Liquid Crystalline Properties in the Room Temperature Region. Inorg Chem 2008; 47:10232-45. [DOI: 10.1021/ic8006266] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Humbert C, Busson B, Six C, Gayral A, Gruselle M, Villain F, Tadjeddine A. Sum-frequency generation as a vibrational and electronic probe of the electrochemical interface and thin films. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.02.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Herrera JM, Bachschmidt A, Villain F, Bleuzen A, Marvaud V, Wernsdorfer W, Verdaguer M. Mixed valency and magnetism in cyanometallates and Prussian blue analogues. Philos Trans A Math Phys Eng Sci 2008; 366:127-38. [PMID: 17875540 DOI: 10.1098/rsta.2007.2145] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Prussian blue (PB) is a well-known archetype of mixed valency systems. In magnetic PB analogues {CxAy[B(CN)6]z}.nH2O (C alkali cation, A and B transition metal ions) and other metallic cyanometallates {Cx(AL)y[B(CN)8]z}.nH2O (L ligand), the presence of two valency states in the solid (either A-B, or A-A' or B-B') is crucial to get original magnetic properties: tunable high Curie temperature magnets; photomagnetic magnets; or photomagnetic high-spin molecules. We focus on a few mixed valency pairs: V(II)/V(III)/V(IV); Cr(II)/Cr(III); Fe(II)-Fe(III); Co(II)-Co(III); Cu(I)-Cu(II); and Mo(IV)/Mo(V), and discuss: (i) the control of the degree of mixed valency during the synthesis, (ii) the importance of mixed valency on the local and long-range structure and on the local and macroscopic magnetization, and (iii) the crucial role of the cyanide ligand to get these original systems and properties.
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Affiliation(s)
- J M Herrera
- Laboratoire de chimie inorganique et matériaux moléculaires, CNRS Unit 7071, Université Pierre et Marie Curie, Paris, France
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Briois V, Vantelon D, Villain F, Couzinet B, Flank AM, Lagarde P. Combining two structural techniques on the micrometer scale: micro-XAS and micro-Raman spectroscopy. J Synchrotron Radiat 2007; 14:403-8. [PMID: 17717381 DOI: 10.1107/s0909049507028683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2006] [Accepted: 06/12/2007] [Indexed: 05/16/2023]
Abstract
X-ray absorption and Raman spectroscopies are complementary in the sense that both give very precise information about the local structure of a sample, both are not restricted to crystalline materials, and in both cases the volumes of the material probed are similar. The X-ray technique has the advantage of being element- and orbital-selective, and sensitive to orientational effects owing to polarization selection rules. In many cases, however, its analysis can present some ambiguity. Combining the two techniques on a micrometer scale could therefore be a very powerful method structurally. In this paper the experimental set-up developed at the LUCIA beamline and its application to a natural mineral are described.
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Affiliation(s)
- V Briois
- Synchrotron SOLEIL, BP 48, 91192 Gif sur Yvette, France
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Tõnsuaadu K, Gruselle M, Villain F, Thouvenot R, Peld M, Mikli V, Traksmaa R, Gredin P, Carrier X, Salles L. A new glance at ruthenium sorption mechanism on hydroxy, carbonate, and fluor apatites: Analytical and structural studies. J Colloid Interface Sci 2006; 304:283-91. [PMID: 17027813 DOI: 10.1016/j.jcis.2006.07.079] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 07/31/2006] [Accepted: 07/31/2006] [Indexed: 11/27/2022]
Abstract
The sorption mechanism of Ru3+ ions on hydroxy (HAp), carbonate (CO3HAp), and fluor apatites (FAp) has been studied in detail. Ru apatites were obtained by reaction of the apatites with RuCl3 in aqueous solution. The structure and composition of the ruthenium-modified apatites were studied by several techniques: elemental analysis, XRD, EXAFS, IR, NMR, SEM-EDS, TEM, and thermal analysis. The amount of Ru in the modified apatite varies from 7.8 to 10.5 wt% and is not related to the initial composition or the specific surface area of the apatite. The different characterization techniques show that in the Ru-modified apatites Ru is surrounded by six oxygen atoms and do not contain any chlorine. For Ru-HAp and Ru-CO3HAp the new phase is amorphous whereas it is crystalline for FAp. The catalytic oxidation ability is higher for Ru-HAp and Ru-CO3HAp compared to Ru-FAp apatite in the oxidation of benzylic alcohol.
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Affiliation(s)
- K Tõnsuaadu
- Tallinn University of Technology, Laboratory of Inorganic Materials, Ehitajate tee 5, 19086 Tallinn, Estonia.
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Briois V, Lützenkirchen-Hecht D, Villain F, Fonda E, Belin S, Griesebock B, Frahm R. Time-Resolved Study of the Oxidation of Ethanol by Cerium(IV) Using Combined Quick-XANES, UV−Vis, and Raman Spectroscopies. J Phys Chem A 2004; 109:320-9. [PMID: 16833350 DOI: 10.1021/jp046691t] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Time-resolved X-ray absorption spectroscopy (Quick-XANES) has been combined with UV-vis and Raman spectroscopies to study the in situ reduction of Ce4+ to Ce3+ in ethanolic solution with a time resolution of ca. 4-5 s. For this purpose, a cam-driven oscillating double-crystal monochromator with a channel-cut crystal was combined with two spectrometers for UV-vis and Raman spectroscopies in a specialized cell which allows one to fit the optical pathways for all three spectroscopies individually. The results show that high-quality results can be obtained simultaneously, thus giving a detailed insight into the mechanisms of the investigated chemical reaction. The continuous release of nitrate and ethanol ligands from the initial Ce4+ into the solution finally leads to a trivalent cerium species which is only coordinated with water molecules after about 1800 s of reaction time.
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Affiliation(s)
- V Briois
- LURE, Centre universitaire Paris-Sud, BP34, F-91898 Orsay Cedex, France
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El Fallah J, Boujana S, Dexpert H, Kiennemann A, Majerus J, Touret O, Villain F, Le Normand F. Redox Processes on Pure Ceria and on Rh/CeO2 Catalyst Monitored by X-Ray Absorption (Fast Acquisition Mode). ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100072a020] [Citation(s) in RCA: 165] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fernandez A, Caballero A, Gonzalez-Elipe AR, Herrmann JM, Dexpert H, Villain F. In Situ EXAFS Study of the Photocatalytic Reduction and Deposition of Gold on Colloidal Titania. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100010a047] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Delsarte S, Serin V, Flank AM, Villain F, Grange P. Structural Investigation of Mixed Nitrided Galloaluminophosphates “AlGaPON” by EELS, XAS, and XPS Spectroscopies. J SOLID STATE CHEM 2002. [DOI: 10.1006/jssc.2001.9389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Champion G, Escax V, Cartier Dit Moulin C, Bleuzen A, Villain F, Baudelet F, Dartyge E, Verdaguer M. Photoinduced ferrimagnetic systems in Prussian blue analogues C(I)xCo4[Fe(CN)6]y (C(I) = alkali cation). 4. Characterization of the ferrimagnetism of the photoinduced metastable state in Rb1.8Co4[Fe(CN)6]3.3-13H2O by K edges X-ray magnetic circular dichroism. J Am Chem Soc 2001; 123:12544-6. [PMID: 11741418 DOI: 10.1021/ja011297j] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In Part 2 of this work, the electronic and local structure of the photoinduced metastable magnetic state of the Prussian blue analogue Rb1.8Co4[Fe(CN)6]3.3-13H2O were characterized. To determine directly the relative orientation of the magnetic moments of Co(II) and Fe(III) ions in the metastable state, and the nature of the exchange interaction between them, we performed X-ray magnetic circular dichroism (XMCD) experiments at the cobalt and iron K edges. We present the first direct experimental evidence of the antiferromagnetic interaction between the cobalt and the iron ions, leading to the ferrimagnetism of the photoinduced metastable state.
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Affiliation(s)
- G Champion
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, Unité CNRS 7071, Case 42, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
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Mangeney C, Lacroix JC, Chane-Ching KI, Jouini M, Villain F, Ammar S, Jouini N, Lacaze PC. Conducting-polymer electrochemical switching as an easy means for control of the molecular properties of grafted transition metal complexes. Chemistry 2001; 7:5029-40. [PMID: 11775676 DOI: 10.1002/1521-3765(20011203)7:23<5029::aid-chem5029>3.0.co;2-#] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Copper(II) 3',4'-bis(N,N'-oxamato)terthiophene has been synthesized and electropolymerized. The copper(II)-complex centers are not affected by the polymerization process, which involves coupling between Calpha carbon atoms of the terthiophene units and leads to a new conjugated polymer consisting of polythiophene chains bearing bis(oxamato)-Cu(II) groups regioregularly grafted onto the polymer backbone. The polymer is stable with respect to polythiophene electroactivity, and no demetallation or modification of the Cu oxidation state occurs over a large potential range. In this material, the two moieties exhibit direct electronic interaction, which makes it possible to use the conductive polymer backbone as a molecular wire or a nanocontact capable of inputting to the bis(oxamato)-Cu(II) groups through the polythiophene-switching reaction. FTIR, XPS, and XAS spectroscopies have been used to study the effect of the state of the conducting polymer upon the properties of the copper(II) center (electron density, ligand field strength, size of cavity, force constants of some bonds). These properties can be controlled to some extent by the potential applied to this device. From the point of view of the copper(II) center, this effect is similar to the grafting of substituents with various electronic properties.
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Affiliation(s)
- C Mangeney
- Institut de Topologie et de Dynamique des Systèmes, Université Paris 7-Denis Diderot, France
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Maurin I, Barboux P, Lassailly Y, Boilot JP, Villain F, Dordor P. Charge-Carrier Localization on Mn Surface Sites in Granular LaMnO3+δ Samples. J SOLID STATE CHEM 2001. [DOI: 10.1006/jssc.2001.9204] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Noronha FB, Schmal M, Moraweck B, Delichère P, Brun M, Villain F, Fréty R. Characterization of Niobia-Supported Palladium−Cobalt Catalysts. J Phys Chem B 2000. [DOI: 10.1021/jp992777o] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - F. Villain
- LURE, Bâtiment 209d, Centre Universitaire Paris - Sud, BP 34, 91898 Orsay Cedex, France
| | - R. Fréty
- Laboratoire d'Application de la Chimie à l'Environnement, LACE/CNRS, 43 Bd du 11 novembre 1918, 69622 Villeurbanne Cedex, France
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Sourdille P, Santiago PY, Villain F, Yamamichi M, Tahi H, Parel JM, Ducournau Y. Reticulated hyaluronic acid implant in nonperforating trabecular surgery. J Cataract Refract Surg 1999; 25:332-9. [PMID: 10079437 DOI: 10.1016/s0886-3350(99)80080-7] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate experimentally and clinically the tolerance and efficacy of a reticulated hyaluronic acid implant in nonperforating trabecular surgery (NPTS). SETTING Bascom Palmer Eye Institute, Miami, Florida, USA, and Clinique Sourdille and Clinique Ophtalmologique Universitaire, Nantes, France. METHODS In experimental surgery, NPTS was performed with and without a hyaluronic acid implant in 25 rabbit eyes. In a pilot study, the results of NPTS with a hyaluronic acid implant in 72 human eyes were retrospectively analyzed in terms of visual acuity, intraocular pressure (IOP), external filtration, postoperative inflammation, and gonioscopy. Mean follow-up was 13.8 months (range 6 to 24 months). RESULTS In the experimental surgery, the rabbit eyes with the implant showed a different healing process than the eyes without the implant. The implant was slowly bioabsorbed and remnants were seen at the operative site (where the tissue was removed) up to day 56 postoperatively. This site was detectable at all histology study periods. Intraocular pressure reduction was longer in the implant group: greater than 5 months versus 3 weeks (P < .05). In the pilot study, visual acuity remained stable, IOP decreased from a mean preoperative level of 26.3 mm Hg +/- 5.22 (SD) to a mean postoperative level without treatment of 15.4 +/- 3.1 mm Hg (P < .0001). No external filtration was detected in 60 eyes, a slightly elevated conjunctiva was noted in 12 eyes. Postoperative inflammation (laser flare and cell measurements) was low. Gonioscopy consistently demonstrated the persistence of a decompression space behind the trabeculum. CONCLUSION Comparative experimental surgery results showed excellent tolerance and efficacy in the rabbit eyes with a hyaluronic acid implant. Clinical results, to be confirmed by a randomized comparative study, also showed excellent biocompatibility and encouraging efficacy.
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Duchesne B, Tahi H, Gautier S, Jallet V, Villain F, Parel JM. [Implantation of controlled-release 5-FU for the prevention of secondary cataract: preliminary study]. Bull Soc Belge Ophtalmol 1998; 268:69-72. [PMID: 9810085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
To assess the efficacy of a control drug release implant coated with 5-Fu placed in the capsular bag for the prevention of the secondary cataract.
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Tahi H, Duchesne B, Parel JM, Nose I, Denham D, Villain F, Lacombe E. [Keratoprosthesis by posterior fixation and mechanical biocompatibility: determination of intraocular pressure provoking aqueous humor leak and/or extrusion]. Bull Soc Belge Ophtalmol 1998; 268:115-20. [PMID: 9810092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The effect of a sudden increase in intraocular pressure (IOP) on Eye Bank eyes implanted with a posterior fixation keratoprosthesis PCL5 type (Lacombe) is evaluated. The IOP was artificially increased at a rate close to that observed in direct eye trauma. The critical pressure values causing aqueous humor leak and/or keratoprosthesis extrusion were compared to those found to blow up unoperated eyes. No statistical difference was found between operated and control eyes (6 pairs of eyes). This KPro type showed its efficacy for keratoprosthesis fixation.
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Affiliation(s)
- H Tahi
- CHU, Dept. d'Ophtalmologie, Faculté de Médecine, Université de Liège, Belgique
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Lamberti C, Bordiga S, Arduino D, Zecchina A, Geobaldo F, Spanó G, Genoni F, Petrini G, Carati A, Villain F, Vlaic G. Evidence of the Presence of Two Different Framework Ti(IV) Species in Ti−Silicalite-1 in Vacuo Conditions: an EXAFS and a Photoluminescence Study. J Phys Chem B 1998. [DOI: 10.1021/jp981225n] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - F. Geobaldo
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
| | | | | | | | - A. Carati
- EniTecnologie, Via F. Maritano 26, I-20097 S. Donato (Mi), Italy
| | - F. Villain
- LURE, Université Paris-Sud, 91405 Orsay Cedex, France
| | - G. Vlaic
- Dipartimento di Scienze Chimiche, Via Valerio 28, Trieste, and Sincrotrone Trieste SCpA, Padriciano 99, I-34012 Trieste, Italy
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Rysanek N, Le Bas G, Villain F, Tsoucaris G. Inclusion of the main pheromone component of Dacus oleae, 1,7-dioxaspiro[5,5]undecane, in beta-cyclodextrin. Acta Crystallogr C 1996; 52 ( Pt 11):2932-6. [PMID: 8962447 DOI: 10.1107/s0108270196005677] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The complex beta-cyclodextrin-1,7-dioxaspiro[5,5]undecane nonahydrate, C42H70O35.C9H16O2.9H2O, belongs to the class of beta-cyclodextrin dimeric-type complexes. The racemic guest molecule is present in a disordered position. Both enantiomers are located in two different regions inside the channel formed by the host dimers.
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Affiliation(s)
- N Rysanek
- ERS 128 CNRS, Centre pharmaceutique, Université Paris XI, Châtenay Malabry, France
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Villain F. A novel silicone intraocular lens concept. Vision Res 1995. [DOI: 10.1016/0042-6989(95)98775-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Selkti M, Lopez HP, Navaza J, Villain F, Rango CD. Molecular recognition by cyclodextrins: the x-ray structure of 6A-boc-L-phenylalanylamino-6A-deoxy-β-cyclodextrin. Supramol Chem 1995. [DOI: 10.1080/10610279508233952] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Caballero A, González-Elipe A, Fernández A, Herrmann JM, Dexpert H, Villain F. Experimental set-up for in-situ X-ray absorption spectroscopy analysis of photochemical reactions: the photocatalytic reduction of gold on titania. J Photochem Photobiol A Chem 1994. [DOI: 10.1016/1010-6030(93)03716-t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Caballero A, Villain F, Dexpert H, Lepeltier F, Didillon B, Lynch J. In situ EXAFS studies of modifications to supported metallic catalysts under reactive atmospheres. Catal Letters 1993. [DOI: 10.1007/bf00772592] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rysanek N, Le Bas G, Villain F, Tsoucaris G. Structure of the (1:1:1) complex 2a,2b,2c,2d,2e,2f,3a,3g,6a,6b,6c,6d,6e,6f,6g-pentadeca-O-methyl-β-cyclodextrin-1,7-dioxaspiro[5.5]undecane-methanol. Acta Crystallogr C 1992. [DOI: 10.1107/s0108270192000520] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Guyot-Sionnest NS, Villain F, Bazin D, Dexpert H, Le Peltier F, Lynch J, Bournonville JP. In situ high temperature and high pressure exafs studie of Pt/Al2O3 catalysts. Part I: Reduction and deactivation. Catal Letters 1991. [DOI: 10.1007/bf00764190] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Guyot-Sionnest NS, Villain F, Bazin D, Dexpert H, Le Peltier F, Lynch J. In situ high temperature and high pressure exafs studies of Pt/Al2O3 Catalysts. Part II: Carbon removal. Catal Letters 1991. [DOI: 10.1007/bf00764191] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rysanek N, Le Bas G, Villain F, Hadjoudis E, Moustakali-Mavridis I, Tsoucaris G. Chiral interaction and fine structural fit in cyclodextrin clathrates. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387083752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Tsoucaris G, Le Bas G, Rysanek N, Villain F. Conformational and enantiomeric discrimination in cyclodextrin inclusion compounds. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf00656407] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Arad Yellin R, Green BS, Knossow M, le Bas G, de Rango C, Tsoucaris G, Villain F. Chiral discrimination in molecular and crystalline systems. Acta Crystallogr A 1981. [DOI: 10.1107/s0108767381096797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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