101
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Signa É, Moisset V, Dubois M, Fratti C, Joly L, Fialon P, Puntous M, Pujol S, Roger I, Burtin Y, Bengue RM, Poirier F. L’enseignement de la transfusion : collaboration entre l’unité de sécurité transfusionnelle et d’hémovigilance et l’ifsi. Transfus Clin Biol 2010. [DOI: 10.1016/j.tracli.2010.09.065] [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: 11/28/2022]
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102
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Moisset V, Dubois M, Fratti C, Joly L, Signac E, Fialon P, Puntous M, Pujol S. Les actions « spot » de l’unité de sécurité transfusionnelle et d’hémovigilance au CHU de Bordeaux. Transfus Clin Biol 2010. [DOI: 10.1016/j.tracli.2010.09.019] [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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103
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Dubois M, Daenens K, Houthoofd S, Peetermans W, Fourneau I. Treatment of Mycotic Aneurysms with Involvement of the Abdominal Aorta: Single-centre Experience in 44 Consecutive Cases. Eur J Vasc Endovasc Surg 2010; 40:450-6. [DOI: 10.1016/j.ejvs.2010.07.017] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 07/24/2010] [Indexed: 02/06/2023]
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104
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Dubois M, Demoulin L, Charlier C, Singh G, Godefroy SB, Campbell K, Elliott CT, Delahaut P. Development of ELISAs for detecting domoic acid, okadaic acid, and saxitoxin and their applicability for the detection of marine toxins in samples collected in Belgium. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2010; 27:859-68. [PMID: 20486002 DOI: 10.1080/19440041003662881] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Okadaic acid, a diarrhetic shellfish poison, domoic acid, an amnesic shellfish poison, and saxitoxin, a paralytic shellfish poison, are three of the best-known marine biotoxins. The mouse bioassay is the method most widely used to detect many of these toxins in shellfish samples, but animal welfare concerns have prompted researchers to seek alternative methods of detection. In this study, three direct competitive enzyme-linked immunosorbent assays (ELISAs), each based on antibodies raised in rabbits against a conjugate of the analyte of interest, were developed for marine biotoxin detection in mussel, oyster, and scallop. One assay was for okadaic acid, one for saxitoxin, and one for domoic acid usually detected and quantified by high-performance liquid chromatography-ultraviolet light (HPLC-UV). All three compounds and a number of related toxins were extracted quickly and simply from the shellfish matrices with a 9 : 1 mixture of ethanol and water before analysis. The detection capabilities (CCbeta values) of the developed ELISAs were 150 microg kg(-1) for okadaic acid, 50 microg kg(-1) for domoic acid, and 5 microg kg(-1) or less for saxitoxin. The assays proved satisfactory when used over a 4-month period for the analysis of 110 real samples collected in Belgium.
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Affiliation(s)
- M Dubois
- Departement Sante, CERgroupe, B-6900 Marloie, Belgium.
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105
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106
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Walton KD, Dubois M, Llinás RR. Abnormal thalamocortical activity in patients with Complex Regional Pain Syndrome (CRPS) Type I. Pain 2010; 150:41-51. [DOI: 10.1016/j.pain.2010.02.023] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 01/19/2010] [Accepted: 02/12/2010] [Indexed: 11/26/2022]
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107
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Kahloula K, Slimani M, Dubois M, Bonnet J. D-cycloserine enhances spatial learning performances of rats chronically exposed to lead during the developmental period. African Journal of Neurological Sciences 2010. [DOI: 10.4314/ajns.v28i1.55141] [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: 11/17/2022]
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108
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Delahaut P, Pierret G, Ralet N, Dubois M, Gillard N. Multi-residue method for detecting coccidiostats at carry-over level in feed by HPLC–MS/MS. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2010; 27:801-9. [DOI: 10.1080/19440040903552408] [Citation(s) in RCA: 24] [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: 10/19/2022]
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109
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Zhang W, Spinelle L, Dubois M, Guérin K, Kharbache H, Masin F, Kharitonov A, Hamwi A, Brunet J, Varenne C, Pauly A, Thomas P, Himmel D, Mansot J. New synthesis methods for fluorinated carbon nanofibres and applications. J Fluor Chem 2010. [DOI: 10.1016/j.jfluchem.2010.02.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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110
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Dubois M, Roy V, Villier V, Gandolfo P, Joly F, Hilber P, Castel H. Age-related cognitive function and cerebral plasticity in miceafter chemotherapy: Important role of drug adjuvants. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e11082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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111
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Reffas A, Bernardet V, David B, Reinert L, Lehocine MB, Dubois M, Batisse N, Duclaux L. Carbons prepared from coffee grounds by H3PO4 activation: characterization and adsorption of methylene blue and Nylosan Red N-2RBL. J Hazard Mater 2010; 175:779-88. [PMID: 19942347 DOI: 10.1016/j.jhazmat.2009.10.076] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 10/16/2009] [Accepted: 10/20/2009] [Indexed: 05/23/2023]
Abstract
Activated carbons were prepared by the pyrolysis of coffee grounds impregnated by phosphoric acid at 450 degrees C for different impregnation ratios: 30, 60, 120 and 180 wt.%. Materials were characterized for their surface chemistry by elemental analysis, "Boehm titrations", point of zero charge measurements, Infrared spectroscopy, thermogravimetric analysis (TGA); as well as for their porous and morphological structure by Scanning Electron Microscopy (SEM) and nitrogen adsorption at 77K. The impregnation ratio was found to govern the porous structure of the prepared activated carbons. Low impregnation ratios (<120 wt.%) led to essentially microporous and acidic activated carbons whereas high impregnation ratios (>120 wt.%) yielded to essentially mesoporous carbons with specific surface areas as high as 925 m(2)g(-1), pore volume as large as 0.7 cm(3)g(-1), and neutral surface. The activated carbons prepared from coffee grounds were compared to a commercial activated carbon (S(BET) approximately 1400 m(2)g(-1)) for their adsorption isotherms of methylene blue and "Nylosan Red N-2RBL", a cationic and anionic (azo) dye respectively. The mesoporous structure of the material produced at 180 wt.% H(3)PO(4) ratio was found to be appropriate for an efficient sorption of the latter azo dye.
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Affiliation(s)
- A Reffas
- LCME, Polytech'Savoie, Université de Savoie, 73376 Le Bourget du Lac Cedex, France
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112
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Lecesne N, Alvès-Condé R, Coterreau E, De Oliveira F, Dubois M, Flambard JL, Franberg H, Gottwald T, Jardin P, Lassen J, Le Blanc F, Leroy R, Mattolat C, Olivier A, Pacquet JY, Pichard A, Rothe S, Saint-Laurent MG, Wendt K. GISELE: a resonant ionization laser ion source for the production of radioactive ions at GANIL. Rev Sci Instrum 2010; 81:02A910. [PMID: 20192407 DOI: 10.1063/1.3279301] [Citation(s) in RCA: 3] [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] [Indexed: 05/28/2023]
Abstract
SPIRAL2 is the new project under construction at GANIL to produce radioactive ion beams and in particular neutron rich ion beams. For the past 10 yr SPIRAL1 at GANIL has been delivering accelerated radioactive ion beams of gases. Both facilities now need to extend the range of radioactive ion beams produced to condensable elements. For that purpose, a resonant ionization laser ion source, funded by the French Research National Agency, is under development at GANIL, in collaboration with IPN Orsay, University of Mainz (Germany) and TRIUMF, Vancouver (Canada). A description of this project called GISELE (GANIL Ion Source using Electron Laser Excitation) is presented.
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Affiliation(s)
- N Lecesne
- GANIL, BP 55027, 14076 Caen Cedex 5, France.
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113
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Jardin P, Barué C, Bajeat O, Canet C, Clément E, Cornell JC, Delahaye P, Dubois M, Dupuis M, Flambard JL, Frånberg H, Frigot R, Leboucher C, Lecesne N, Lecomte P, Lehérissier P, Lemagnen F, Leroy R, Maunoury L, Méry A, De Oliveira F, Pichard A, Pacquet JY, Saint-Laurent MG, Thomas JC. Latest developments at GANIL for stable and radioactive ion beam production. Rev Sci Instrum 2010; 81:02A909. [PMID: 20192406 DOI: 10.1063/1.3267296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the frame of the SPIRAL II (Système de Production d'Ions Radioactifs Accélérés en Ligne Partie II) project, several developments of stable and radioactive ion production systems have been started up. In parallel, GANIL has the ambition to preserve the existing stable and radioactive beams and also to increase its range by offering new ones. In order to identify the best directions for this development, a new group called GANISOL has been formed. Its preliminary conclusions and the latest developments at GANIL are presented.
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Affiliation(s)
- P Jardin
- Grand Accélérateur National d'Ions Lourds, Bd H. Becquerel, BP 55027, 14076 Caen Cedex 5, France
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114
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Pichard A, Jardin P, Saint-Laurent MG, Frigot R, Bajeat O, Delahaye P, Dubois M, Frånberg-Delahaye H, Lecomte P, Lehérissier P, Leroy R, Lecesne N, Maunoury L, Méry A, Pacquet JY. Development of a surface ionization source for the SPIRAL 2 project. Rev Sci Instrum 2010; 81:02A908. [PMID: 20225406 DOI: 10.1063/1.3258498] [Citation(s) in RCA: 3] [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] [Indexed: 05/28/2023]
Abstract
Development of new radioactive beams, and thus of new target ion sources (TISs) for isotope-separator-on-line production systems are in progress at GANIL for the SPIRAL 2 project. The efficiency and time response measurements of each step in the production process are crucial to predict and maximize the available yields, in particular, for short lived isotopes. This paper presents a method for measuring these quantities that makes use of a stable alkali chopped beam of controlled intensity. This method was applied to surface ionization source test for high efficiency. Results of recent experiments are presented that include ionization efficiency measurements for Cs, Rb, K, Na, and Li with a graphite and rhenium ionizer and dwell time of these alkalis on graphite. The results enabled to design a first surface ionization source prototype which will be installed in the SPIRAL 2 TIS.
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Affiliation(s)
- A Pichard
- GANIL, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France.
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115
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Méry A, Jardin P, Alcántara-Núñez J, Saint-Laurent MG, Bajeat O, Delahaye P, Dubois M, Frånberg-Delahaye H, Lecomte P, Lehérissier P, Maunoury L, Pichard A, Pacquet JY, Thomas JC. Direct 1+ --> N+ conversion of stable alkali ions using an electron cyclotron resonance ion source. Rev Sci Instrum 2010; 81:02A904. [PMID: 20192402 DOI: 10.1063/1.3267782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The production of radioactive ions using the Isotope Separation On-Line method gives rise, in most cases, to singly charged ions. In order to perform experiments with postaccelerated radioactive ion beams, these ions have to be multicharged. We describe here a new compact design for a charge breeder that will be coupled to the production target of SPIRAL1 at GANIL. We present recent results obtained offline with stable alkali ions (Na, K, Rb, and Cs) on the SIRa test bench. Particularly, 1(+) to N(+) conversion efficiencies and conversion times are presented. Several points have been identified for the improvements of the present performances.
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Affiliation(s)
- A Méry
- GANIL, Bd Henri Becquerel, BP 55027, 14076 CAEN Cedex 5, France.
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116
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Arendt J, Schilling C, Peiffer M, Ginter S, Nahan AF, Lemos C, Dubois M, Thonon F, Jouan C, Gaspard O, Larcher ME, Gomez V, Pereira S, Geimer M. [Retrospective study--pregnancy after assisted medical reproduction from 2001 to 2009 at the Central Hospital of Luxembourg (first section)]. Bull Soc Sci Med Grand Duche Luxemb 2010:247-255. [PMID: 20882743] [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: 05/29/2023]
Abstract
Retrospective study on a nine year ART practice focusing on pregnancy outcomes and multiple pregnancies, their complications, the gestational duration, delivery options, the new born weights and health statements til the age of two. Post ART pregnancies seem to have an increased complication rate; multiple births are more frequent than with spontaneous conception. The first chapter deals with the entire group. The second chapter analyses several sub-groups according to the ART method employed. The results are compared to publications in PubMed and Medline.
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Affiliation(s)
- J Arendt
- Service de stérilité et de Médecine de Reproduction du Centre Hospitalier de Luxembourg
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117
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Zhang W, Dubois M, Guérin K, Bonnet P, Kharbache H, Masin F, Kharitonov AP, Hamwi A. Effect of curvature on C-F bonding in fluorinated carbons: from fullerene and derivatives to graphite. Phys Chem Chem Phys 2009; 12:1388-98. [PMID: 20119617 DOI: 10.1039/b914853a] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of the curvature of the carbon lattice is discussed taking into account NMR data on various fluorinated carbons including C(60) fullerenes, single, double and multiwall carbon nanotubes. Graphite fluorides and highly fluorinated fullerenes are used as limit model compounds for planar and spherical geometries, respectively. The curvature results in a weakening of the C-F bonding covalence. First of all, various highly fluorinated fullerenes with increasing F/C molar ratio were prepared by treatment with pure gaseous fluorine. A preliminary study using XRD, EPR and IR spectroscopy confirms that the highest fluorination level can be reached either at 133 or at 300 degrees C. In order to extract the correlation between fluorine and carbon atoms and the C-F bond length, specific sequences such as solid echo, two-dimensional (19)F -->(13)C cross polarization wide-line separation and inverse (19)F -->(13)C cross polarization were also used for fluorinated C(60).
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Affiliation(s)
- W Zhang
- Clermont Université, Université Blaise Pascal, Laboratoire des Matériaux Inorganiques, BP 10448, F-63000, Clermont-Ferrand, France
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118
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Crassous I, Groult H, Lantelme F, Devilliers D, Tressaud A, Labrugère C, Dubois M, Belhomme C, Colisson A, Morel B. Study of the fluorination of carbon anode in molten KF-2HF by XPS and NMR investigations. J Fluor Chem 2009. [DOI: 10.1016/j.jfluchem.2009.07.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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119
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Tonetti J, Vadcard L, Girard P, Dubois M, Merloz P, Troccaz J. Assessment of a percutaneous iliosacral screw insertion simulator. Orthop Traumatol Surg Res 2009; 95:471-7. [PMID: 19801213 DOI: 10.1016/j.otsr.2009.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 05/12/2009] [Accepted: 07/20/2009] [Indexed: 02/02/2023]
Abstract
BACKGROUND Navigational simulator use for specialized training purposes is rather uncommon in orthopaedic and trauma surgery. However, it reveals providing a valuable tool to train orthopaedic surgeons and help them to plan complex surgical procedures. PURPOSE This work's objective was to assess educational efficiency of a path simulator under fluoroscopic guidance applied to sacroiliac joint percutaneous screw fixation. MATERIALS AND METHODS We evaluated 23 surgeons' accuracy inserting a guide-wire in a human cadaver experiment, following a pre-established procedure. These medical trainees were defined in three prospective respects: novice or skilled; with or without theoretical knowledge; with or without surgical procedure familiarity. The screw insertion in the human cadaver was performed in two different settings: either without prior training for a first group (G1) or after simulator guidance in the second group (G2). Analysed criteria for each tested surgeon included the number of intraoperative X-rays taken in order to achieve the surgical procedure as well as an iatrogenic index reflecting the surgeon's ability to detect any hazardous trajectory at the time of performing said procedure. RESULTS An average number of 13 X-rays was required for wire implantation by the G1 group. G2 group, assisted by the simulator use, required an average of 10 X-rays. A substantial difference was especially observed within the novice sub-group (N), with an average of 12.75 X-rays for the G1 category and an average of 8.5 X-rays for the G2 category. In the second sub-group of operators devoid of procedural knowledge (P-), a significant difference was found, since 12 X-rays appeared on average required in the G1 group versus six in the G2 group. Finally, within the sub-group of operators with technical knowledge (T+), a significant difference also was found since an average of 16 X-rays was required in the G1 versus an average 10.8 X-rays in the G2 group. As far as the iatrogenic index is concerned, we were unable to observe any significant difference between the groups. DISCUSSION Despite some methodological variations, we were able to demonstrate the simulator's efficiency in familiarizing the operator with the use of a 2D imaging system as a first step facilitating the procedure conduct in the real 3D patient environment. Novice surgeons (N) having a good lumbosacral joint anatomy knowledge although devoid of specific surgical technique knowledge were the ones who most benefited from this guiding tool. Analysis of the training data collected during simulator's use helps orientating the prospective surgeon toward possession of not yet acquired learning points. This educational program can easily be extended to any other percutaneous technique requiring fluoroscopic control guidance. LEVEL OF EVIDENCE Level III prospective diagnostic study.
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Affiliation(s)
- J Tonetti
- Orthopaedic and Traumatology Department, Michallon Hospital, BP 217, 38043 Grenoble Cedex 09, France.
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120
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Le Van K, Groult H, Lantelme F, Dubois M, Avignant D, Tressaud A, Komaba S, Kumagai N, Sigrist S. Electrochemical formation of carbon nano-powders with various porosities in molten alkali carbonates. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.03.049] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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121
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Krestinin AV, Kharitonov AP, Shul’ga YM, Zhigalina OM, Knerel’man EI, Dubois M, Brzhezinskaya MM, Vinogradov AS, Preobrazhenskii AB, Zvereva GI, Kislov MB, Martynenko VM, Korobov II, Davydova GI, Zhigalina VG, Kiselev NA. Fabrication and characterization of fluorinated single-walled carbon nanotubes. ACTA ACUST UNITED AC 2009. [DOI: 10.1134/s1995078009010078] [Citation(s) in RCA: 21] [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: 11/22/2022]
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122
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Abstract
The aim of the present study was to evaluate the patulin risk stemming from the quality of apple juice produced by two small processing companies (fruit presses) located in the South of Belgium (Walloon region). A quantification method based on high-performance liquid chromatography with UV detection was developed and validated in-house. This method was then used to analyse 49 apple juice samples collected from two small apple presses. Patulin was detected in 32 samples and the contamination level was above the 50 µg/l legal limit for 18 samples. The incidence and contamination levels of patulin detected in our study were higher than in previous ones. The high patulin concentrations observed might be linked to the fact that clients of the presses were individual growers. It highlights the need for an efficient quality management system for reducing the patulin risk in the apple-processing sector. This work also points to the importance and necessity of campaigns aiming to raise public awareness of the patulin problem, among both transformers and home growers, in order to limit population exposure to patulin.
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Affiliation(s)
- N. Gillard
- CER Groupe, Division Hormonologie, rue du point du jour, 8-6900 Marloie, Belgium
| | - R. Agneessens
- Walloon Agricultural Research Center, rue de Serpont, 100-6800 Libramont, Belgium
| | - M. Dubois
- CER Groupe, Division Hormonologie, rue du point du jour, 8-6900 Marloie, Belgium
| | - Ph. Delahaut
- CER Groupe, Division Hormonologie, rue du point du jour, 8-6900 Marloie, Belgium
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123
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Mansuy JM, Martin-Blondel G, Abravanel F, Mengelle C, Miédougé M, Merviel C, Dubois M, Kamar N, Rostaing L, Peron JM, Alric L, Izopet J. Les hépatites E aiguës en Midi-Pyrénées de 2003 à 2007. Rev Med Interne 2008. [DOI: 10.1016/j.revmed.2008.10.129] [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: 10/21/2022]
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124
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Mansuy JM, Abravanel F, Miedouge M, Mengelle C, Merviel C, Dubois M, Kamar N, Rostaing L, Alric L, Moreau J, Peron JM, Izopet J. Acute hepatitis E in south-west France over a 5-year period. J Clin Virol 2008; 44:74-7. [PMID: 18993112 DOI: 10.1016/j.jcv.2008.09.010] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Accepted: 09/15/2008] [Indexed: 01/16/2023]
Abstract
BACKGROUND Hepatitis E was found in people living in industrialized countries who had not travelled to highly endemic areas. OBJECTIVES To study the cases of acute hepatitis E confirmed thanks to viral genomic detection over a 5 years period in south-west France. STUDY DESIGN 62 cases of hepatitis E were identified between 2003 and 2007. Their demographic, clinical, and virological features were analyzed. RESULTS Cases of acute hepatitis E occurred regularly throughout this period. No seasonal variation was found. Patients, usually male (sex ratio=1.95), were adults living in both urban and rural areas. Sixty (96.8%) patients had not travelled abroad during the 6 months before diagnosis. Clinical manifestations ranged from asymptomatic infection to severe hepatitis. HEV was genotyped in 55 specimens. All the patients who had not travelled abroad were infected with genotype 3. CONCLUSION The incidence of hepatitis E in south-west France was stable from 2003 to 2007, 96.8% of the cases were autochthonous. There was an age-related increase in the disease and patients tended to be men. The predominant genotype and subtype was 3f. However, contaminations pathways involved in hepatitis E in our area remain to clarify.
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Affiliation(s)
- J M Mansuy
- CHU Toulouse, Hôpital Purpan, Laboratoire de virologie, Institut fédératif de biologie de Purpan, F-31300, France
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125
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Dubois M, Grosse Y, Thome JP, Kremers P, Pfohl-Leszkowicz A. Metabolic activation and DNA-adducts detection as biomarkers of chlorinated pesticide exposures. Biomarkers 2008; 2:17-24. [DOI: 10.1080/135475097231922] [Citation(s) in RCA: 7] [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: 10/17/2022]
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126
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Dubois M, Brisou P, Fournier B, Guennoc B, Carsuzaa F. [Cutaneous Bipolaris spicifera infection in a patient on systemic corticosteroids]. Ann Dermatol Venereol 2008; 135:507-8. [PMID: 18598805 DOI: 10.1016/j.annder.2008.03.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 03/28/2008] [Indexed: 10/22/2022]
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Fleury M, Briot K, Jenn J, Dubois M, Roux C, Gauvain JB. Prefracture syndrome of the hip fracture: a case control study. Clin Exp Rheumatol 2008; 26:464-466. [PMID: 18578971] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND Hip fractures result from both bone fragility and trauma, more often a sideways fall. Spontaneous hip fractures have been described; in such cases, patients reported pain ("prefracture" syndrome) in the hip region for weeks before the fracture. OBJECTIVES To identify the proportion of patients who had a pain in the hip region before a hip fracture, to compare this proportion to the one observed in controls and to describe the characteristics of this pain. PATIENTS AND METHODS For a period of 6 months, each subject (>65 years) treated for hip fracture was prospectively recruited in an orthopaedic surgery department. Exclusion criteria were: alterations of cognitive functions (defined by a mini mental state <20), refusal, and fractures related to bone metastasis or multiple myeloma. Subjects were compared to sex-matched controls consulting in an acute care geriatrics unit. They were asked about the occurrence of pain in hip region before the fracture and its characteristics. RESULTS Thirty-eight patients (31 women, 7 men, mean age 83.1 [+/-7.6]) were included and were compared to 38 sex-matched controls (31 women, 7 men, mean age 82.7 [+/-6.9]). Among the 38 patients with hip fracture, 10 (26.3%) reported a pain in the hip region, compared with 2 (5.3%) in the control group (p=0.01). CONCLUSION A better recognition of "prefracture" pain in the elderly may allow adequate management and treatment of patients, in order to avoid a proportion of hip fractures.
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Affiliation(s)
- M Fleury
- Department of Acute Care Geriatrics, General Hospital, Orleans, France
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128
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Dubois M, Carrière D, Iyer R, Arunagirinathan M, Bellare J, Verbavatz JM, Zemb T. From dispersed nanodiscs to thin films of layered organic material via reversible swelling. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.05.051] [Citation(s) in RCA: 5] [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: 11/30/2022]
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129
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Cheema S, Lebovits A, Dubois M. (314) Is there a role for biofeedback in the management of acute postopoerative pain? The Journal of Pain 2008. [DOI: 10.1016/j.jpain.2008.01.237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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130
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Eléon C, Gaubert G, Jardin P, Saint-Laurent MG, Alcantara J, Alvès Condé R, Barué C, Boilley D, Cornell JC, Delahaye P, Dubois M, Jacquot B, Leherissier P, Leroy R, Lhersonneau G, Marie-Jeanne M, Maunoury L, Pacquet JY, Pellemoine F, Pierret C, Thomas JC, Villari ACC. Development of a 1+/N+ setup for the production of multicharged radioactive alkali ions in SPIRAL. Rev Sci Instrum 2008; 79:02A904. [PMID: 18315159 DOI: 10.1063/1.2819738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In the framework of the production of radioactive ion beams by the isotope separator online method, a new system has been developed at GANIL/SPIRAL I to produce multicharged alkali ions. The principle, referred to as the "direct 1+/N+ method," consists of a surface ionization source associated with a multicharged electron-cyclotron-resonance ion source without an intermediate mass separator. This new system has been tested online using a (48)Ca primary beam at 60.3 A MeV. The experimental evidence of the direct 1+/N+ process has been obtained for a potential difference between the two sources of 11 V and with a 1+/N+ charge breeding efficiency of 0.04% for (47)K(5+). This value is significantly lower than the value of 6% obtained for stable K ions with the standard 1+/N+ method. A possible explanation is given in the text.
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Affiliation(s)
- C Eléon
- GANIL CEA/DSN-CNRS/IN2P3, Bd H Becquerel, BP 55027, Caen Cedex 5, France.
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131
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Gaubert G, Barué C, Canet C, Cornell JC, Dubois M, Dupuis M, Eleon C, Flambard JL, Frigot R, Jardin P, Leboucher C, Lecesne N, Leherissier P, Lemagnen F, Leroy R, Pacquet JY. Status report of stable and radioactive ion beam production at GANIL. Rev Sci Instrum 2008; 79:02A309. [PMID: 18315099 DOI: 10.1063/1.2801677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
GANIL has been producing many stable and radioactive ion beams for nearly 25 years. Constant progresses have been made in terms of intensity, stability, and reliability. The intensity for some stable metallic beams now exceeds or approaches the p microA level at an energy up to 95 MeV/u, e.g., 1.14 p microA for (36)S (65% enriched) at 77 MeV/u, 0.35 p microA for (58)Ni (63% enriched) at 74 MeV/u. Some recent results with Magnesocene using the metallic ions from volatile compounds method should also make possible the production of metallic beams with an intensity greater than 1 p microA. This has still to be measured. The ISOL facility SPIRAL I has been in operation for almost six years. Up to now, 17 exotic He experiments have been done with 14 target/ion-source (TIS) units; 19 other experiments (with O, Ne, Ar, and Kr) have been achieved with 14 TISs. Statistics show a fairly good ratio of available beam time to scheduled beam time. The radioactive beams and available intensities are compiled in this report. Future developments on radioactive ion beam production are briefly presented, while more details will be discussed elsewhere at this conference.
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Affiliation(s)
- G Gaubert
- GANIL (Grand Accélérateur National d'Ions Lourds), Bvd Henry Becquerel, BP 55027, Caen Cedex 5, France.
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132
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Mueller P, Sulai IA, Villari ACC, Alcántara-Núñez JA, Alves-Condé R, Bailey K, Drake GWF, Dubois M, Eléon C, Gaubert G, Holt RJ, Janssens RVF, Lecesne N, Lu ZT, O'Connor TP, Saint-Laurent MG, Thomas JC, Wang LB. Nuclear charge radius of 8He. Phys Rev Lett 2007; 99:252501. [PMID: 18233516 DOI: 10.1103/physrevlett.99.252501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Indexed: 05/25/2023]
Abstract
The root-mean-square (rms) nuclear charge radius of 8He, the most neutron-rich of all particle-stable nuclei, has been determined for the first time to be 1.93(3) fm. In addition, the rms charge radius of 6He was measured to be 2.068(11) fm, in excellent agreement with a previous result. The significant reduction in charge radius from 6He to 8He is an indication of the change in the correlations of the excess neutrons and is consistent with the 8He neutron halo structure. The experiment was based on laser spectroscopy of individual helium atoms cooled and confined in a magneto-optical trap. Charge radii were extracted from the measured isotope shifts with the help of precision atomic theory calculations.
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Affiliation(s)
- P Mueller
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
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133
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Lepoutre S, Boyer D, Potdevin A, Dubois M, Briois V, Mahiou R. Structural investigations of sol–gel-derived LiYF4 and LiGdF4 powders. J SOLID STATE CHEM 2007. [DOI: 10.1016/j.jssc.2007.09.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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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134
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Perrier d’Hauterive S, Berndt S, Tsampalas M, Charlet-Renard C, Dubois M, Bourgain C, Hazout A, Foidart JM, Geenen V. Dialogue between Blastocyst hCG and Endometrial LH/hCG Receptor: Which Role in Implantation? Gynecol Obstet Invest 2007; 64:156-60. [DOI: 10.1159/000101740] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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135
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Aroti A, Leontidis E, Dubois M, Zemb T. Effects of monovalent anions of the hofmeister series on DPPC lipid bilayers Part I: swelling and in-plane equations of state. Biophys J 2007; 93:1580-90. [PMID: 17496051 PMCID: PMC1948043 DOI: 10.1529/biophysj.106.094482] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2006] [Accepted: 04/17/2007] [Indexed: 11/18/2022] Open
Abstract
Aiming to improve understanding of the mechanisms behind specific anion effects in biological systems we have studied the effects of sodium salts of simple monovalent anions belonging to the Hofmeister series on the bilayers of the zwitterionic lipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine using small-angle x-ray scattering and the osmotic stress technique. NaCl, NaBr, NaNO(3), NaI, and NaSCN were used in this investigation. The electrolytes were found to swell the bilayers and to increase the area per lipid headgroup at each value of the osmotic pressure, suggesting the association of anions with the bilayer-lipid interfaces. The effects follow the Hofmeister series with SCN(-) inducing the most pronounced changes. "Ion competition" experiments with mixed NaI/NaCl solutions at total salinity 0.1 and 0.5 M revealed that the effect of ions on the lipid equation-of-state is roughly linear at low concentrations, but strongly nonlinear at high concentrations. The experimental results are fitted in a companion article to provide "binding" or "partitioning" constants of anions in the lipid bilayers.
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Affiliation(s)
- A Aroti
- Department of Chemistry, University of Cyprus, Nicosia, Cyprus
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136
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Aroti A, Leontidis E, Dubois M, Zemb T, Brezesinski G. Monolayers, bilayers and micelles of zwitterionic lipids as model systems for the study of specific anion effects. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2007.03.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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137
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Yazami R, Hamwi A, Guérin K, Ozawa Y, Dubois M, Giraudet J, Masin F. Fluorinated carbon nanofibres for high energy and high power densities primary lithium batteries. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.04.013] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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138
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Abstract
Pacific Island people commonly eat taro (Colocasia esculenta var. Schott) as a staple food in their home islands and also like to consume this familiar food when living in New Zealand. Some of these foods are imported from the islands and some attempts are, currently, being made to grow these crops in New Zealand. The taro leaves in this experiment were grown in a greenhouse in the North Island of New Zealand. The soluble oxalate content of the raw leaves was 236.10 mg oxalate/100 g wet matter (WM). Soaking the raw leaves in water for 30 min marginally reduces the soluble oxalate content by leaching into the tap water. Soaking for 18 h results in a 26% reduction in the soluble oxalate content of the raw leaves. During the soaking treatments the insoluble oxalate (calcium oxalate) content of the leaves remained constant (mean 171.64 mg oxalate/100 g WM). Boiling the taro leaves resulted in a 36% loss of soluble oxalates, while the soluble oxalate content of baked tissue was very similar to the raw tissue. The mean insoluble oxalate content of the raw, boiled and baked tissue was 226.28 mg oxalate/100 g WM. Overall, boiling the taro leaves was an effective way of reducing the soluble oxalate content of the cooked tissue.
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Affiliation(s)
- G P Savage
- Food Group, ALSD, Lincoln University, Canterbury, New Zealand.
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139
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Leontidis E, Aroti A, Belloni L, Dubois M, Zemb T. Effects of monovalent anions of the hofmeister series on DPPC lipid bilayers Part II: modeling the perpendicular and lateral equation-of-state. Biophys J 2007; 93:1591-607. [PMID: 17496050 PMCID: PMC1948044 DOI: 10.1529/biophysj.107.109264] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [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: 11/18/2022] Open
Abstract
The effects of Hofmeister anions on the perpendicular and lateral equation-of-state (EOS) of the dipalmitoylphosphatidylcholine lamellar phase discussed in the companion article are here examined using appropriate free energy models for the intra- and interbilayer interactions. Minimizing the free energy with respect to the two basic geometrical parameters of the lamellar phase, which are the interbilayer water thickness, d(w), and the lipid headgroup area, a(L), provides the perpendicular (osmotic pressure balance) and lateral EOS. Standard models were used for the hydration, undulation, and Van der Waals attractive force between the bilayers in the presence of electrolytes whereas two alternative treatments of electrostatic interactions were used to obtain "binding" or "partitioning" constants of anions to the lipid bilayers both in the absence and in the presence of sodium binding. The computed binding constants depend on anion type and follow the Hofmeister series, but were found to increase with electrolyte concentration, implying that the local binding approximation cannot fit bilayer repulsion data. The partitioning model was also found inadequate at high electrolyte concentrations. The fitting attempts revealed two additional features worthy of future investigation. First, at maximum swelling in the presence of electrolytes the osmotic pressure of the bilayer system cannot be set equal to zero. Second, at high salt concentrations an additional repulsion appears to come into effect in the presence of strongly adsorbing anions such as I(-) or SCN(-). Both these phenomena may reflect an inconsistent treatment of the ion-surface interactions, which have an impact on the osmotic pressure. Alternatively, they may arise from bulk solution nonidealities that cannot be handled by the classical Poisson-Boltzmann formalism. The inability of current models to explain the "lateral" EOS by fitting the area per lipid headgroup as a function of salt type and concentration shows that current understanding of phospholipid-ion interactions is still very incomplete.
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Affiliation(s)
- E Leontidis
- Department of Chemistry, University of Cyprus, Nicosia, Cyprus.
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140
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Gaspard U, Dubois M. [Therapeutic progress in gynecology: functional approaches]. Rev Med Liege 2007; 62:423-7. [PMID: 17725217] [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: 05/16/2023]
Abstract
Over the last ten years, progress in evidence-based medicine coupled with technological breakthroughs and introduction of new drugs have deeply changed the management of our patients. In the field of hormone therapy, lower dosages of estrogens and new progestins have increased tolerance and non-contraceptive benefits of oral contraceptives, while lower-doses, new progestins, new routes of administration have optimized the benefit/risk balance for the treatment of menopause. About 500,000 cycles of IVF are performed worldwide each year, optimizing male and female fertility, with less multiple pregnancies, and use of new recombinant gonadotropin, LHRH agonists/antagonists, new ovarian tissue cryopreservation techniques, etc...
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Affiliation(s)
- U Gaspard
- Service de Gynécologie, CHU Sart Tilman et Notre-Dame des Bruyères, Liège, Belgique
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141
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Renoncourt A, Vlachy N, Bauduin P, Drechsler M, Touraud D, Verbavatz JM, Dubois M, Kunz W, Ninham BW. Specific alkali cation effects in the transition from micelles to vesicles through salt addition. Langmuir 2007; 23:2376-81. [PMID: 17243741 DOI: 10.1021/la062837z] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The transition of ionic micelles to vesicles with added salts is explored in this paper. The catanionic surfactant solution was comprised of sodium dodecylsulfate (SDS) and dodecyltrimethylammonium bromide (DTAB) with an excess of SDS. The micellar size increased with concentration for all salts. No anion specificity was found, probably because of the excess of SDS. However, when the cation of the added salt was varied, large differences were observed in the hydrodynamic radii of the aggregates. A classification of the cations according to their ability to increase the measured hydrodynamic radii follows a Hofmeister series. The change in aggregate size can be explained by modified counterion binding and dehydration of the surfactant headgroups.
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Affiliation(s)
- A Renoncourt
- Institute of Physical and Theoretical Chemistry, University of Regensburg, D-93040 Regensburg, Germany
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142
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Delorme N, Bardeau JF, Carrière D, Dubois M, Gourbil A, Mohwald H, Zemb T, Fery A. Experimental evidence of the electrostatic contribution to the bending rigidity of charged membranes. J Phys Chem B 2007; 111:2503-5. [PMID: 17315922 DOI: 10.1021/jp068252v] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [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
We address the issue of the origin of the bending rigidity of a charged membrane formed from amphiphilic molecules. Electrostatic effects are investigated by direct measurement of the force necessary to deform a catanionic membrane as function of the ionic strength of the medium by means of an atomic force microscope (AFM). Using continuum mechanical modeling of membrane deformation, we derive the bending rigidity of the catanionic membranes and monitor for the first time its decrease in response to increasing salt concentration.
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Affiliation(s)
- N Delorme
- Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany.
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143
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Dricot JF, Dubois M, Gaspard U, Salmon C, Herman P. [Image of the month. An intrauterine pregnancy after endometrial ablation]. Rev Med Liege 2007; 62:5-6. [PMID: 17343121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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144
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145
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Bobillier Chaumon ME, Dubois M, Retour D. L'acceptation des nouvelles technologies d'information: le cas des systèmes d'information en milieu bancaire. Psychologie du Travail et des Organisations 2006. [DOI: 10.1016/j.pto.2006.05.002] [Citation(s) in RCA: 13] [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: 11/30/2022]
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146
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Degée S, Dricot JF, Lamborelle S, Dubois M, Foidart JM, Nisolle M. [How I treat: an ectopic pregnancy]. Rev Med Liege 2006; 61:797-803. [PMID: 17313114] [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: 05/14/2023]
Abstract
Nowadays, the management of ectopic pregnancy should be codified as often as possible. Two types of treatment are possible. One surgical and the other medical. Our study is concerned with a series of 97 patients hospitalized for suspicion of ectopic pregnancy for whom the risk factors and treatment were analyzed. Our conclusion is that the medical treatment should be more frequently proposed and surgery should prefer the conservative treatment whenever it is still possible.
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Affiliation(s)
- S Degée
- Service Universitaire de Gynécologie Obstétrique, CHR Citadelle, Liège
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147
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Affiliation(s)
- M. Dubois
- a LCSM-URA CNRS N° 158, Université Henri Poincaré Nancy I , BP 239, 54506 , Vandoeuvre-lès-Nancy , France
| | - J. Ghanbaja
- a LCSM-URA CNRS N° 158, Université Henri Poincaré Nancy I , BP 239, 54506 , Vandoeuvre-lès-Nancy , France
| | - D. Billaud
- a LCSM-URA CNRS N° 158, Université Henri Poincaré Nancy I , BP 239, 54506 , Vandoeuvre-lès-Nancy , France
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148
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Perrier d'Hauterive S, Charlet-Renard C, Dubois M, Foidart JM, Geenen V. [What's new at the maternal-foetal interface: role of the hCG/LH-hCG receptor couple during embryo implantation]. Rev Med Liege 2006; 61:705-12. [PMID: 17209503] [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: 05/13/2023]
Abstract
Implantation of the embryo into the maternal endometrium represents a unique biological process, combining an immunological (tolerance of an allograft) and biological (adhesion of two epitheliums) paradox. The success of implantation depends on a receptive endometrium, a functionally normal blastocyst and a synchronized cross-talk between embryonic and maternal tissues. Though sexual steroids control the process, a cascade of growth factors or cytokines are the prime paracrine mediators of the dialogue at the maternal-embryonic interface. HCG is one of the molecules most precociously produced by the embryo and is the most specific marker of its presence. HCG is a luteotropic factor which relays the inadequate support provided by the reduced rates of LH, but also influences the pregnancy on a paracrine mode by a local action on implantation process, probably by interacting with its receptor, the LH/hCG-R that we have evidenced on endometrial epithelium. We demonstrate that embryo actively participate into its implantation, tolerance and placentation.
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Affiliation(s)
- S Perrier d'Hauterive
- Centre d'immunologie CHU, Département universitaire de Gynécologie et Obstétrique, CHR Citadelle, Liège, Belgique.
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149
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Dubois M, Naji A, Billaud D. Electrochemical Insertion of Lithium into Carbonaceous Materials Derived from Pyrolyzed Polyparaphehylene : Effects of the Pyrolysis Time. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008025468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Dubois
- a Laboratoire de Chimie du Solide Minéral-UMR 7555 , Université Henri Poincaré Nancy 1 , BP 239, 54506, Vandoeuvre-lès-Nancy , France
| | - A. Naji
- a Laboratoire de Chimie du Solide Minéral-UMR 7555 , Université Henri Poincaré Nancy 1 , BP 239, 54506, Vandoeuvre-lès-Nancy , France
| | - D. Billaud
- a Laboratoire de Chimie du Solide Minéral-UMR 7555 , Université Henri Poincaré Nancy 1 , BP 239, 54506, Vandoeuvre-lès-Nancy , France
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150
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Dubois M, Latil S, Scifo L, Grévin B, Rubio A. Scanning tunneling spectroscopy simulations of poly(3-dodecylthiophene) chains adsorbed on highly oriented pyrolytic graphite. J Chem Phys 2006; 125:34708. [PMID: 16863374 DOI: 10.1063/1.2216690] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on a hybrid scheme to perform efficient and accurate simulations of scanning tunneling spectroscopy (STS) of molecules weakly bonded to surfaces. Calculations are based on a tight binding (TB) technique, including a self-consistent calculation of the electronic structure of the molecule, to predict STS conductance spectra. The use of a local basis makes our model easily applicable to systems with several hundreds of atoms. We performed first-principles density-functional calculations to extract the geometrical and electronic properties of the system. In this way, we can include, in the TB scheme, the effects of structural relaxation upon adsorption on the electronic structure of the molecule. This approach is applied to the study of regioregular poly(3-dodecylthiophene) polymer chains adsorbed on highly oriented pyrolytic graphite. Results of spectroscopic calculations are discussed and compared with recently obtained experimental data.
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Affiliation(s)
- M Dubois
- UMR5819 (CEA-CNRS-Université Grenoble I), CEA/DRFMC/SPrAM/LEMOH, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
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