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Aguilar-Galindo F, Nguyen VTT, Singh R, Domaracka A, Huber BA, Díaz-Tendero S, Rousseau P, Maclot S. Unexpected and delayed fragmentation dynamics of the organometallic ferrocene induced by ion-collision. Phys Chem Chem Phys 2024; 26:7638-7646. [PMID: 38363201 DOI: 10.1039/d3cp05430f] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
We have investigated the fragmentation dynamics of the organometallic ferrocene molecule after interaction with multiply charged ions using multicoincidence mass spectrometry and quantum chemistry calculations. We observed unexpected fragmentation dynamics of the two-body breakup channels from ferrocene dications revealing a charge screening effect from the iron atom and delayed fragmentation dynamics. These observations are rationalized through the population of a specific long-lived excited state, where one positive charge is located on each cyclopentadienyl ring.
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Affiliation(s)
- F Aguilar-Galindo
- Department of Chemistry, Universidad Autónoma de Madrid, 28049, Madrid, Spain
- Institute for Advanced Research in Chemistry (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - V T T Nguyen
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - R Singh
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - A Domaracka
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - B A Huber
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - S Díaz-Tendero
- Department of Chemistry, Universidad Autónoma de Madrid, 28049, Madrid, Spain
- Institute for Advanced Research in Chemistry (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - P Rousseau
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - S Maclot
- Institut Lumière Matière UMR 5306, Université Claude Bernard Lyon 1, CNRS, Univ Lyon, 69100 Villeurbanne, France.
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Schwemmer P, Pederson R, Haecker K, Bocher P, Fort J, Mercker M, Jiguet F, Elts J, Marja R, Piha M, Rousseau P, Garthe S. Assessing potential conflicts between offshore wind farms and migration patterns of a threatened shorebird species. Anim Conserv 2022. [DOI: 10.1111/acv.12817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- P. Schwemmer
- Research and Technology Centre (FTZ) University of Kiel Büsum Germany
| | - R. Pederson
- Research and Technology Centre (FTZ) University of Kiel Büsum Germany
| | - K. Haecker
- Research and Technology Centre (FTZ) University of Kiel Büsum Germany
| | - P. Bocher
- Littoral Environnement et Sociétés Laboratory (LIENSs) La Rochelle University – CNRS La Rochelle France
| | - J. Fort
- Littoral Environnement et Sociétés Laboratory (LIENSs) La Rochelle University – CNRS La Rochelle France
| | - M. Mercker
- Bionum GmbH – Consultants in Biological Statistics Hamburg Germany
| | - F. Jiguet
- UMR7204 CESCO, Museum National D'Histoire Naturelle, CNRS, Sorbonne Université Paris France
| | - J. Elts
- Birdlife Estonia Tartu Estonia
| | - R. Marja
- Birdlife Estonia Tartu Estonia
- 'Lendület' Landscape and Conservation Ecology Institute of Ecology and Botany, Centre for Ecological Research Vácrátót Hungary
| | - M. Piha
- Natural Resources Institute Finland Helsinkiarkus Finland
- Finnish Museum of Natural History Helsinki Finland
| | - P. Rousseau
- National Nature Reserve of Moëze‐Oléron LPO Ligue pour la Protection des Oiseaux Saint‐Froult France
| | - S. Garthe
- Research and Technology Centre (FTZ) University of Kiel Büsum Germany
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3
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Deranque C, Rouffet A, Dejean M, Rousseau P. Reconstruction des pertes de substances du nez : algorithme décisionnel à propos de 229 cas. ANN CHIR PLAST ESTH 2022; 67:7-13. [DOI: 10.1016/j.anplas.2021.12.002] [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] [Received: 10/26/2021] [Revised: 11/22/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022]
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4
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Kim D, Theberge V, Provencher S, Yassa M, Kong I, Perera F, Lavertu S, Rousseau P, Lee J, Karam I, Schneider K, Chambers S, Levine M, Parpia S, Whelan T. OPAR: A Multicenter Phase II Randomized Trial of Fractionation Schedules for Once-a-Day Accelerated Partial Breast Irradiation (APBI). Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.047] [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: 10/20/2022]
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Med J, Sršeň Š, Slavíček P, Domaracka A, Indrajith S, Rousseau P, Fárník M, Fedor J, Kočišek J. Vibrationally Mediated Stabilization of Electrons in Nonpolar Matter. J Phys Chem Lett 2020; 11:2482-2489. [PMID: 32154726 DOI: 10.1021/acs.jpclett.0c00278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We explore solvation of electrons in nonpolar matter, here represented by butadiene clusters. Isolated butadiene supports only the existence of transient anions (resonances). Two-dimensional electron energy loss spectroscopy shows that the resonances lead to an efficient vibrational excitation of butadiene, which can result into the almost complete loss of energy of the interacting electron. Cluster-beam experiments show that molecular clusters of butadiene form stable anions, however only at sizes of more than 9 molecular units. We have calculated the distribution of electron affinities of clusters using classical and path integral molecular dynamics simulations. There is almost a continuous transition from the resonant to the bound anions with an increase in cluster size. The comparison of the classical and quantum dynamics reveals that the electron binding is strongly supported by molecular vibrations, brought about by nuclear zero-point motion and thermal agitation. We also inspected the structure of the solvated electron, finding it well localized.
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Affiliation(s)
- Jakub Med
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
| | - Štěpán Sršeň
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
| | - Petr Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - A Domaracka
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - S Indrajith
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - P Rousseau
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - M Fárník
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - J Fedor
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - J Kočišek
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
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Rouffet A, Marie D, Boucher S, Deranque C, Martin L, Rousseau P. Prise en charge des lésions cutanées de pseudoxanthome élastique en chirurgie plastique. Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.540] [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: 10/27/2022]
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7
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Gelis A, Colin D, Perrouin-Verbe B, Deboissezon X, Bensmail D, Casanova D, Rousseau P, Barrois B. French guidelines from PERSE, SoFCPRE and SOFMER for the medical and surgical management of pressure ulcers in persons with spinal cord injury. Ann Phys Rehabil Med 2018; 61:352-354. [DOI: 10.1016/j.rehab.2018.05.1318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/24/2018] [Accepted: 05/26/2018] [Indexed: 11/28/2022]
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Vimont T, Arnaud D, Rouffet A, Giot JP, Florczak AS, Rousseau P. Hübner's tarsomarginal grafts in eyelid reconstruction: 94 cases. J Stomatol Oral Maxillofac Surg 2018. [PMID: 29530736 DOI: 10.1016/j.jormas.2018.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Preserving the integrity of the eyelid margin in eyelid reconstruction remains a challenge for plastic surgeons. In 1976, Hübner described a technique to repair full-thickness eyelid defects using a tarsomarginal graft covered with a local flap. This simple technique addresses both functional and aesthetic requirements of eyelid reconstruction by using tissue from the contralateral eyelid. The aim of this study was to determine the appropriate role of this uncommon technique in eyelid reconstruction. METHOD In total, 94 tarsomarginal grafts were performed on 70 patients. Eight surgeons participated in this study. Data were retrospectively collected from patients' charts and all information regarding surgical indications, histology, defect size and topography, operative time, immediate result, and potential complications were recorded. RESULTS Only one of the patients suffered total necrosis. Partial wound dehiscence occurred in one case and partial necrosis occurred in 6 cases. No major sequelae were observed in the donor eyelids. In 100% of cases, eyelid margin integrity was otherwise preserved. Four patients required revision surgery for insufficient malignancy resection and 13 patients for long-term eyelid ectropion or scar retraction. CONCLUSION This simple and reliable technique ensured the closure of full-thickness eyelid defects covering up to 3/4 of the eyelid length. The procedure should be more widely used as it guarantees high-quality eyelid reconstruction.
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Affiliation(s)
- T Vimont
- Department of plastic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France.
| | - D Arnaud
- Department of plastic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France
| | - A Rouffet
- Department of plastic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France
| | - J-P Giot
- Department of plastic surgery, CHU Grenoble-Alpes, boulevard de la Chantourne, 38043 Grenoble cedex 9, France
| | - A S Florczak
- Department of plastic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France
| | - P Rousseau
- Department of plastic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France
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Jolicoeur M, David S, Rousseau P, Mondat M. Long-Term Follow-up for High-Dose-Rate Interstitial Brachytherapy and Lumpectomy as a Second Conservative Treatment for Local Recurrences of Breast Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.030] [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: 11/26/2022]
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Huguier V, Paulus E, Fradet J, Rousseau P, Bertheuil N. [Light sources usable by the plastic surgeon in the absence of photographic studio]. ANN CHIR PLAST ESTH 2017; 62:314-321. [PMID: 28285884 DOI: 10.1016/j.anplas.2017.02.003] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 02/08/2017] [Indexed: 11/19/2022]
Abstract
Medical photography is an important part of the medical file and is widely used in medical communication, especially in our discipline. His practice has to be the most standardized and reproducible as possible, which distinguishes it from artistic photography. Photography fix the light reflecting from a subject, so surgeon have to control of the light source in any environment. In the absence of dedicated studio, using external cobra or ring flashes with special diffusers allow the surgeon to have light sources adapted to the different conditions encountered in daily practice.
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Affiliation(s)
- V Huguier
- Service de chirurgie plastique, CHU, 2, rue de la Milétrie, CS 90577, 86021 Poitiers cedex, France.
| | - E Paulus
- Service de chirurgie plastique, CHU, 2, rue de la Milétrie, CS 90577, 86021 Poitiers cedex, France
| | - J Fradet
- Service de chirurgie plastique, CHU, 2, rue de la Milétrie, CS 90577, 86021 Poitiers cedex, France
| | - P Rousseau
- Service de chirurgie plastique, CHU, 4, rue Larrey, 49100 Angers, France
| | - N Bertheuil
- Service de chirurgie plastique, CHU, 16, boulevard de Bulgarie, 35200 Rennes, France
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Milosavljević AR, Rousseau P, Domaracka A, Huber BA, Giuliani A. Multiple electron capture from isolated protein poly-anions in collision with slow highly charged ions. Phys Chem Chem Phys 2017; 19:19691-19698. [DOI: 10.1039/c7cp02075a] [Citation(s) in RCA: 4] [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: 11/21/2022]
Abstract
Multiply charged ions very efficiently capture several electrons from trapped mass/charge selected protein poly-anions, producing dominantly charge-reduced proteins and small neutral losses.
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Affiliation(s)
- A. R. Milosavljević
- Synchrotron SOLEIL
- 91192 Gif-sur-Yvette
- France
- Institute of Physics Belgrade
- University of Belgrade
| | | | | | | | - A. Giuliani
- Synchrotron SOLEIL
- 91192 Gif-sur-Yvette
- France
- INRA
- U1008
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Castrovilli MC, Markush P, Bolognesi P, Rousseau P, Maclot S, Cartoni A, Delaunay R, Domaracka A, Kočišek J, Huber BA, Avaldi L. Fragmentation of pure and hydrated clusters of 5Br-uracil by low energy carbon ions: observation of hydrated fragments. Phys Chem Chem Phys 2017; 19:19807-19814. [DOI: 10.1039/c7cp02233f] [Citation(s) in RCA: 18] [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: 01/18/2023]
Abstract
The fragmentation of the isolated 5-bromouracil (5BrU) molecule and pure and nano-hydrated 5BrU clusters induced by low energy 12C4+ ions has been studied.
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Affiliation(s)
| | | | | | | | - S. Maclot
- Normandie Université
- ENSICAEN
- UNICAEN
- CEA
- CNRS
| | - A. Cartoni
- CNR-ISM
- Monterotondo Scalo
- Italy
- Dipartimento di Chimica
- Sapienza Università di Roma
| | | | | | - J. Kočišek
- Normandie Université
- ENSICAEN
- UNICAEN
- CEA
- CNRS
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Maclot S, Delaunay R, Piekarski DG, Domaracka A, Huber BA, Adoui L, Martín F, Alcamí M, Avaldi L, Bolognesi P, Díaz-Tendero S, Rousseau P. Determination of Energy-Transfer Distributions in Ionizing Ion-Molecule Collisions. Phys Rev Lett 2016; 117:073201. [PMID: 27563959 DOI: 10.1103/physrevlett.117.073201] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Indexed: 06/06/2023]
Abstract
The ionization and fragmentation of the nucleoside thymidine in the gas phase has been investigated by combining ion collision with state-selected photoionization experiments and quantum chemistry calculations. The comparison between the mass spectra measured in both types of experiments allows us to accurately determine the distribution of the energy deposited in the ionized molecule as a result of the collision. The relation of two experimental techniques and theory shows a strong correlation between the excited states of the ionized molecule with the computed dissociation pathways, as well as with charge localization or delocalization.
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Affiliation(s)
- S Maclot
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
| | - R Delaunay
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
| | - D G Piekarski
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - A Domaracka
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
| | - B A Huber
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
| | - L Adoui
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
| | - F Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencias (IMDEANanociencia), Cantoblanco 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - M Alcamí
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencias (IMDEANanociencia), Cantoblanco 28049 Madrid, Spain
| | - L Avaldi
- CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
| | - P Bolognesi
- CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
| | - S Díaz-Tendero
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - P Rousseau
- Normandie Université-CIMAP, UMR 6252 CEA/CNRS/ENSICAEN/UNICAEN, Boulevard Henri Becquerel, BP 5133-14070 Caen cedex 5, France
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Herard C, Arnaud D, Goga D, Rousseau P, Potier B. Rapid onset of squamous cell carcinoma in a thin skin graft donor site. Ann Dermatol Venereol 2016; 143:457-61. [PMID: 27083971 DOI: 10.1016/j.annder.2015.03.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 10/12/2014] [Revised: 01/26/2015] [Accepted: 03/31/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Squamous cell carcinomas are malignant tumours of epithelial origin that can appear on sites subjected to chronic inflammation after a period of several years. The rapid development of squamous cell carcinoma at the donor site for a thin skin graft is a rare and poorly understood situation. PATIENTS AND METHODS We report the case of a patient undergoing thin skin grafting to cover the area of removal of a vertex squamous cell carcinoma and in whom squamous cell carcinoma appeared at the donor site within 9 weeks. DISCUSSION In our case, we ruled out intraoperative contamination because two sets of surgical instruments were used. Given the number of cases reported in the literature, a chance event seems unlikely. The hypothesis of an acute inflammatory process caused by scarring of the thin skin graft site appears to us the most convincing. Development of cancer at the graft donor site may thus be added to the list of complications of thin skin grafting.
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Affiliation(s)
- C Herard
- Department of plastic, reconstructive and aesthetic surgery, hôpital Trousseau, CHU de Tours, avenue de la République, 37170 Chambray-Lès-Tours, France.
| | - D Arnaud
- Department of plastic, reconstructive and aesthetic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers, France
| | - D Goga
- Department of plastic, reconstructive and aesthetic surgery, hôpital Trousseau, CHU de Tours, avenue de la République, 37170 Chambray-Lès-Tours, France
| | - P Rousseau
- Department of plastic, reconstructive and aesthetic surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers, France
| | - B Potier
- Department of plastic, reconstructive and aesthetic surgery, polyclinique du Parc, 49300 Cholet, France
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15
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Bolognesi P, Kettunen JA, Cartoni A, Richter R, Tosic S, Maclot S, Rousseau P, Delaunay R, Avaldi L. Site- and state-selected photofragmentation of 2Br-pyrimidine. Phys Chem Chem Phys 2015; 17:24063-9. [PMID: 26314495 DOI: 10.1039/c5cp02601f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The fragmentation of the 2Br-pyrimidine molecule following direct valence photoionization or inner shell excitation has been studied by electron-ion coincidence experiments. 2Br-pyrimidine has been chosen as a model for the class of pyrimidinic building blocks of three nucleic acids and several radiosensitizers. It is known that the site- and state-localization of energy deposition, typical of inner shell excitation, results in the enhancement of the total ion yield as well as in changes in the relative intensity of the different fragmentation channels. Here we address the question of the origin of this selective fragmentation by using electron-ion coincidence techniques. The results show that the fragmentation is strongly selective in the final singly charged ion state, independently of the process that leads to the population of that state, and the dominant fragmentation patterns correlate with the nearest appearance potential.
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Affiliation(s)
- P Bolognesi
- CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma1, Monterotondo Scalo, Italy.
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Chen T, Gatchell M, Stockett MH, Delaunay R, Domaracka A, Micelotta ER, Tielens AGGM, Rousseau P, Adoui L, Huber BA, Schmidt HT, Cederquist H, Zettergren H. Formation of H2 from internally heated polycyclic aromatic hydrocarbons: excitation energy dependence. J Chem Phys 2015; 142:144305. [PMID: 25877576 DOI: 10.1063/1.4917021] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We have investigated the effectiveness of molecular hydrogen (H2) formation from Polycyclic Aromatic Hydrocarbons (PAHs) which are internally heated by collisions with keV ions. The present and earlier experimental results are analyzed in view of molecular structure calculations and a simple collision model. We estimate that H2 formation becomes important for internal PAH temperatures exceeding about 2200 K, regardless of the PAH size and the excitation agent. This suggests that keV ions may effectively induce such reactions, while they are unlikely due to, e.g., absorption of single photons with energies below the Lyman limit. The present analysis also suggests that H2 emission is correlated with multi-fragmentation processes, which means that the [PAH-2H](+) peak intensities in the mass spectra may not be used for estimating H2-formation rates.
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Affiliation(s)
- T Chen
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - M Gatchell
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - M H Stockett
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - R Delaunay
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen cedex 05, France
| | - A Domaracka
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen cedex 05, France
| | - E R Micelotta
- Université Paris Sud, Institut d'Astrophysique Spatiale, UMR 8617, 91405 Orsay, France
| | - A G G M Tielens
- Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands
| | - P Rousseau
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen cedex 05, France
| | - L Adoui
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen cedex 05, France
| | - B A Huber
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen cedex 05, France
| | - H T Schmidt
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - H Cederquist
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - H Zettergren
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
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Rousseau P. Silvia's blessing. Neurology 2015; 84:2379-80. [DOI: 10.1212/wnl.0000000000001664] [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: 11/15/2022] Open
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Chen T, Gatchell M, Stockett MH, Alexander JD, Zhang Y, Rousseau P, Domaracka A, Maclot S, Delaunay R, Adoui L, Huber BA, Schlathölter T, Schmidt HT, Cederquist H, Zettergren H. Absolute fragmentation cross sections in atom-molecule collisions: scaling laws for non-statistical fragmentation of polycyclic aromatic hydrocarbon molecules. J Chem Phys 2015; 140:224306. [PMID: 24929387 DOI: 10.1063/1.4881603] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We present scaling laws for absolute cross sections for non-statistical fragmentation in collisions between Polycyclic Aromatic Hydrocarbons (PAH/PAH(+)) and hydrogen or helium atoms with kinetic energies ranging from 50 eV to 10 keV. Further, we calculate the total fragmentation cross sections (including statistical fragmentation) for 110 eV PAH/PAH(+) + He collisions, and show that they compare well with experimental results. We demonstrate that non-statistical fragmentation becomes dominant for large PAHs and that it yields highly reactive fragments forming strong covalent bonds with atoms (H and N) and molecules (C6H5). Thus nonstatistical fragmentation may be an effective initial step in the formation of, e.g., Polycyclic Aromatic Nitrogen Heterocycles (PANHs). This relates to recent discussions on the evolution of PAHNs in space and the reactivities of defect graphene structures.
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Affiliation(s)
- T Chen
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - M Gatchell
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - M H Stockett
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - J D Alexander
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - Y Zhang
- Department of Mathematics, Faculty of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia
| | - P Rousseau
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - A Domaracka
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - S Maclot
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - R Delaunay
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - L Adoui
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - B A Huber
- CIMAP, UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Basse-Normandie, bd Henri Becquerel, BP 5133, F-14070 Caen Cedex 05, France
| | - T Schlathölter
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - H T Schmidt
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - H Cederquist
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
| | - H Zettergren
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden
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Marchand A, Rousseau P, Croue A, Vidaud D, Wolkenstein P, Martin L. Late diagnosis of neurofibromatosis type 1 in an 81-year-old patient. Clin Exp Dermatol 2015; 40:225-6. [DOI: 10.1111/ced.12403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2014] [Indexed: 11/28/2022]
Affiliation(s)
- A. Marchand
- Department of Dermatology; University Hospital of Angers; Angers France
| | - P. Rousseau
- Department of Plastic Surgery; University Hospital of Angers; Angers France
| | - A. Croue
- Department of Pathology; University Hospital of Angers; Angers France
| | - D. Vidaud
- Department of Molecular Genetics and Biochemistry; Beaujeon University Hospital; Clichy France
| | - P. Wolkenstein
- Department of Dermatology; University Hospital of Angers; Angers France
| | - L. Martin
- Department of Dermatology; University Hospital of Angers; Angers France
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Stockett MH, Gatchell M, Alexander JD, Bērziņš U, Chen T, Farid K, Johansson A, Kulyk K, Rousseau P, Støchkel K, Adoui L, Hvelplund P, Huber BA, Schmidt HT, Zettergren H, Cederquist H. Fragmentation of anthracene C14H10, acridine C13H9N and phenazine C12H8N2ions in collisions with atoms. Phys Chem Chem Phys 2014; 16:21980-7. [DOI: 10.1039/c4cp03293d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Puissant C, Abraham P, Durand S, Humeau-Heurtier A, Faure S, Rousseau P, Mahé G. [Endothelial function: role, assessment and limits]. J Mal Vasc 2013. [PMID: 24355615 DOI: 10.1016/j.jmv.2013.11.004.] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
For several years, detecting and preventing cardiovascular diseases have become a major issue. Different methods have been developed to evaluate endothelial function. Endothelial dysfunction is one of the first steps leading to atherosclerosis. This review presents an insight into endothelial function, the interests of its assessment and methods for studying endothelial function. To date, the vascular endothelium must be considered as a specific organ with its own functions that contribute to the homeostasis of the cardiovascular system. Endothelial dysfunction typically corresponds to a decrease of nitric oxide NO bioavailability. Biological or physico-chemical methods may be used to assess dysfunction. Biological methods allow measuring NO metabolites and pro-inflammatory and vasoconstrictor mediators released by the endothelium. The physico-chemical methods include intra-coronary injections, plethysmography, flow-mediated dilation (FMD), digital plethysmography and optical techniques using laser (laser Doppler single-point, laser Doppler imager, laser speckle contrast imaging) that can be coupled with provocation tests (iontophoresis, microdialysis, post-ischemic hyperemia, local heating). The principle of each technique and its use in clinical practice are discussed. Studying endothelial dysfunction is a particularly promising field because of new drugs being developed. Nevertheless, assessment methodology still needs further development to enable reliable, non-invasive, reproducible, and inexpensive ways to analyze endothelial dysfunction.
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Affiliation(s)
- C Puissant
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - P Abraham
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France; Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France
| | - S Durand
- EA 4334 motricity, interactions, and performance, LUNAM université, université du Maine, 72085 Le Mans cedex 9, France
| | - A Humeau-Heurtier
- Laboratoire d'ingénierie des systèmes automatisés (LISA), LUNAM université, université d'Angers, 49000 Angers, France
| | - S Faure
- Stress oxydant et pathologies métaboliques (SOPAM), Inserm U1063, LUNAM université, université d'Angers, 40045 Angers, France
| | - P Rousseau
- Département de chirurgie plastique, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - G Mahé
- Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France; Pôle imagerie médicale, centre hospitalier universitaire Pontchaillou, 2, avenue du Pr-Léon-Bernard, 35033 Rennes cedex 9, France.
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Puissant C, Abraham P, Durand S, Humeau-Heurtier A, Faure S, Rousseau P, Mahé G. [Endothelial function: role, assessment and limits]. ACTA ACUST UNITED AC 2013; 39:47-56. [PMID: 24355615 DOI: 10.1016/j.jmv.2013.11.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 10/24/2013] [Indexed: 12/16/2022]
Abstract
For several years, detecting and preventing cardiovascular diseases have become a major issue. Different methods have been developed to evaluate endothelial function. Endothelial dysfunction is one of the first steps leading to atherosclerosis. This review presents an insight into endothelial function, the interests of its assessment and methods for studying endothelial function. To date, the vascular endothelium must be considered as a specific organ with its own functions that contribute to the homeostasis of the cardiovascular system. Endothelial dysfunction typically corresponds to a decrease of nitric oxide NO bioavailability. Biological or physico-chemical methods may be used to assess dysfunction. Biological methods allow measuring NO metabolites and pro-inflammatory and vasoconstrictor mediators released by the endothelium. The physico-chemical methods include intra-coronary injections, plethysmography, flow-mediated dilation (FMD), digital plethysmography and optical techniques using laser (laser Doppler single-point, laser Doppler imager, laser speckle contrast imaging) that can be coupled with provocation tests (iontophoresis, microdialysis, post-ischemic hyperemia, local heating). The principle of each technique and its use in clinical practice are discussed. Studying endothelial dysfunction is a particularly promising field because of new drugs being developed. Nevertheless, assessment methodology still needs further development to enable reliable, non-invasive, reproducible, and inexpensive ways to analyze endothelial dysfunction.
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Affiliation(s)
- C Puissant
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - P Abraham
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France; Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France
| | - S Durand
- EA 4334 motricity, interactions, and performance, LUNAM université, université du Maine, 72085 Le Mans cedex 9, France
| | - A Humeau-Heurtier
- Laboratoire d'ingénierie des systèmes automatisés (LISA), LUNAM université, université d'Angers, 49000 Angers, France
| | - S Faure
- Stress oxydant et pathologies métaboliques (SOPAM), Inserm U1063, LUNAM université, université d'Angers, 40045 Angers, France
| | - P Rousseau
- Département de chirurgie plastique, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - G Mahé
- Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France; Pôle imagerie médicale, centre hospitalier universitaire Pontchaillou, 2, avenue du Pr-Léon-Bernard, 35033 Rennes cedex 9, France.
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Rousseau P, Arnaud D, Huguier V, Chemli H, Dhouib M, Bali D, Darsonval V. [Aesthetic reconstructive surgery of the lip]. ANN CHIR PLAST ESTH 2013; 58:601-27. [PMID: 24135286 DOI: 10.1016/j.anplas.2013.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 06/02/2013] [Indexed: 11/19/2022]
Abstract
Lip reconstruction can be performed with numerous surgical techniques. The aim was here to present these usual techniques and to focus on the details that can be used to obtain the most favourable results. The goal of this surgery, that represents a compromise between function and aesthetic, has to be kept in mind to prevent mistakes that decrease the quality of the result.
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Affiliation(s)
- P Rousseau
- Service de chirurgie plastique, esthétique et reconstructrice, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex 01, France.
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Huguier V, Dagrégorio G, Darsonval V, Arnaud D, Potier B, Rousseau P. [Cheek reconstruction]. ANN CHIR PLAST ESTH 2013; 58:457-514. [PMID: 24125779 DOI: 10.1016/j.anplas.2013.07.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 07/03/2013] [Indexed: 11/29/2022]
Abstract
We describe the different cheek reconstruction techniques with primary emphasis on the superficial layers. In addition to the clinical context, location and size of the lesion will be taken into account to choose the best method that will optimize the functional and aesthetic results while minimizing potential sequelae. Main evaluation criteria include absence of natural orifice deformation, scar location, skin cover quality and respect of volumes.
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Affiliation(s)
- V Huguier
- Service de chirurgie plastique, CHU, 2, rue de la Milétrie, 86021 Poitiers cedex, France.
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Arnaud D, Beuzeboc M, Huguier V, Darsonval V, Rousseau P. [Forehead and temple aesthetic reconstruction]. ANN CHIR PLAST ESTH 2013; 58:389-427. [PMID: 24041665 DOI: 10.1016/j.anplas.2013.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/24/2013] [Accepted: 06/02/2013] [Indexed: 10/26/2022]
Abstract
The purpose of this article is to address the techniques of reconstruction of the forehead and the temple trying to add an "aesthetic" dimension, as the fourth dimension introduced by Burget for the reconstructive surgery of the nose. Achieve "aesthetic" reconstruction is to have constant attention to details. This is how to choose the right indication depending on the age and the etiology of the defect. This is to place incisions to perfection. And it is to be humble and open oneself to criticism, always seeking to improve the quality of its results.
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Affiliation(s)
- D Arnaud
- Service de chirurgie plastique, reconstructrice et esthétique, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex 9, France.
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Baraër F, Darsonval V, Lejeune F, Bochot-Hermouet B, Rousseau P. [Eyebrow reconstruction]. ANN CHIR PLAST ESTH 2013; 58:428-36. [PMID: 23896574 DOI: 10.1016/j.anplas.2013.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/21/2013] [Accepted: 06/23/2013] [Indexed: 11/24/2022]
Abstract
The eyebrow is an essential anatomical area, from a social point of view, so its reconstruction, in case of skin defect, must be as meticulous as possible, with the less residual sequela. Capillary density extremely varies from one person to another and the different methods of restoration of this area should absolutely take this into consideration. We are going to review the various techniques of reconstruction, according to the sex and the surface to cover.
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Affiliation(s)
- F Baraër
- Service de chirurgie plastique, clinique Brétéché, 3, rue de la Béraudière, 44000 Nantes, France.
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Seitz F, Zettergren H, Rousseau P, Wang Y, Chen T, Gatchell M, Alexander JD, Stockett MH, Rangama J, Chesnel JY, Capron M, Poully JC, Domaracka A, Méry A, Maclot S, Vizcaino V, Schmidt HT, Adoui L, Alcamí M, Tielens AGGM, Martín F, Huber BA, Cederquist H. Ions colliding with clusters of fullerenes—Decay pathways and covalent bond formations. J Chem Phys 2013; 139:034309. [DOI: 10.1063/1.4812790] [Citation(s) in RCA: 19] [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: 01/13/2023] Open
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Zettergren H, Rousseau P, Wang Y, Seitz F, Chen T, Gatchell M, Alexander JD, Stockett MH, Rangama J, Chesnel JY, Capron M, Poully JC, Domaracka A, Méry A, Maclot S, Schmidt HT, Adoui L, Alcamí M, Tielens AGGM, Martín F, Huber BA, Cederquist H. Formations of dumbbell C118 and C119 inside clusters of C60 molecules by collision with α particles. Phys Rev Lett 2013; 110:185501. [PMID: 23683214 DOI: 10.1103/physrevlett.110.185501] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 05/26/2023]
Abstract
We report highly selective covalent bond modifications in collisions between keV alpha particles and van der Waals clusters of C(60) fullerenes. Surprisingly, C(119)(+) and C(118)(+) are the dominant molecular fusion products. We use molecular dynamics simulations to show that C(59)(+) and C(58)(+) ions--effectively produced in prompt knockout processes with He(2+)--react rapidly with C(60) to form dumbbell C(119)(+) and C(118)(+). Ion impact on molecular clusters in general is expected to lead to efficient secondary reactions of interest for astrophysics. These reactions are different from those induced by photons.
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Affiliation(s)
- H Zettergren
- Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden.
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Arnaud D, Potier B, Jeufroy C, Darsonval V, Rousseau P. [Schmid-Meyer fronto-temporal flap for nasal reconstruction]. ACTA ACUST UNITED AC 2012; 113:423-32. [PMID: 23153631 DOI: 10.1016/j.stomax.2012.10.002] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 05/10/2012] [Accepted: 10/09/2012] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Many surgical techniques have already been described to repair full thickness defects of the inferior part of the nose. The Schmid-Meyer fronto-temporal flap procedure, a little known technique, is based on the old principle of autonomization of a cutaneous flap and uses a tailor-made composite cartilaginous graft placed in the temporal region. This graft is progressively detached and allows mucosal/cartilaginous/and cutaneous nasal repair. Can this technique still be used for nasal full-thickness reconstruction? PATIENTS AND METHOD Nine cases of nasal reconstruction using this procedure were performed. The 4-steps of the operative technique were described and the results were analyzed retrospectively. RESULTS This procedure allows, for some specific indications, excellent reconstruction of the ala, the columella or the nasal tip. In eight cases out of nine, the result was judged good or very good by both patients and physicians. In 78%, the reconstruction was performed under local anesthesia. DISCUSSION The Schmid-Meyer flap procedure may still be used for full-thickness reconstruction of the lower third of the nose because it allows a high quality of nasal reconstruction and few scar sequels.
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Affiliation(s)
- D Arnaud
- Service de chirurgie plastique, reconstructrice et esthétique, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex 9, France.
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Huguier V, Rousseau P, Robiolle C, Darsonval V, Dagregorio G. [Eyelid, medial canthus and medial orbital wall reconstruction using a combination of Hübner and conchal grafts with two illustrative cases]. ANN CHIR PLAST ESTH 2012; 58:159-65. [PMID: 23063253 DOI: 10.1016/j.anplas.2012.08.007] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 08/30/2012] [Indexed: 10/27/2022]
Abstract
Post-ablative medial canthus and medial orbital wall reconstruction may involve various materials. Few articles present such reconstructions using cartilage homografts, and very few opt for conchal cartilage. In some cases of medial orbital wall excision, at least half of the eyelid must also be removed. We present two cases where we decided to use conchal cartilage to reconstruct the medial orbital wall and tarsomarginal Hübner grafts to reconstruct the eyelid. This combination offers several advantages: a very limited resorption, only one operative field and a reduced infection risk.
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Affiliation(s)
- V Huguier
- Service de chirurgie plastique, CHU de Poitiers, 2, rue de la Milétrie, BP 577, 86021 Poitiers cedex, France
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Lekieffre A, Rousseau P, Arnaud D, Potier B, Darsonval V. [Moldable titanium mesh for chest wall reconstruction, an elegant solution about a case report]. ANN CHIR PLAST ESTH 2012; 57:392-9. [PMID: 22575770 DOI: 10.1016/j.anplas.2012.04.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 04/01/2012] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Several surgical techniques are available for full thickness chest wall reconstruction. The choice has to be adapted to the size of the loss of tissue, its location, and must finally be accepted by the patient's. We propose a new and unpublished solution. CASE REPORT We have in our care a 54 years-old patient suffering from a previous loss of chest wall tissue measuring 7 cm(2) due to surgical treatment of mediastinal Hodgkin's disease with sternal and costal invasion. Because of the sequelae, the goal focused on aesthetic reconstruction. Heartbeat was visible under the skin due to a loss of secondary left breast tissue from an initial treatment with absorbable Vicryl(©) mesh followed by a local skin, and glandular flap. Our choice of reconstruction consisted of inserting a moldable titanium mesh followed by 200 g implants in each breast during the same operation. We did not experience any complications and the patient is satisfied with the results. DISCUSSION No example of reconstruction using only a moldable titanium mesh was found in the literature on chest wall reconstruction. Our elegant choice is innovative in our discipline. However, this reconstruction materiel is already part of therapy procedures in other specialized surgeries. CONCLUSION This case report illustrates the various facets of our speciality: bring a solution at once repair, aesthetic and unique according to the request of the patient. The use of a moldable titanium mesh allows the reconstruction of stable chest wall. The small size does not present any functional difficulties, but rather unsightly sequel.
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Affiliation(s)
- A Lekieffre
- Service de chirurgie plastique et reconstructrice, CHU de Poitiers, 2, rue de la Miléterie, 86000 Poitiers, France.
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Kao R, Rajagopalan A, Beckett A, Beckett A, Rex R, Shah S, Waddell J, Boitano M, Faidi S, Babatunde O, Lawson F, Grant A, Sudarshan M, Sudarshan M, Takashashi M, Waggott M, Lampron J, Post A, Beale E, Bobrovitz N, Zakrison T, Smith A, Bawazeer M, Evans C, Leeper T, Kagedan D, Grenier T, Rezendo-Neto J, Roberts D, Roberts D, Stark P, Berg R, Mehta S, Gardner P, Moore L, Vassilyadi M, Moore L, Moore L, Hoshizaki B, Rezende-Neto J, Slaba I, Ramesh A, Grigorovich A, Parry N, Pajak C, Rosenbloom B, Grunfeld A, van Heest R, Fernandes J, Doucet J, Schooler S, Ali J, Klassen B, Santana M, McFarlan A, Ball C, Blackmore C, Rezende-Neto J, Kidane B, Hicks C, Brennan M, Brennan M, Harrington A, Sorvari A, Stewart TC, Biegler N, Chaubey V, Tsang B, Benjamin S, Hogan A, Fraser J, Martin M, Bridge J, Faidi S, Waligora M, Hsiao M, Sharma S, Sankarankutty A, Mckee J, Mckee J, Mckee J, Snider C, Szpakowski J, Brown R, Shah S, Shiu M, Chen M, Bell N, Besserer F, Bell N, Trudeau MO, Alhabboubi M, Rezende-Neto J, Rizoli S, Hill A, Joseph B, Lawless B, Jiao X, Xenocostas A, Rui T, Parry N, Driman D, Martin C, Stewart TC, Walsh J, Parry N, Merritt N, Elster E, Tien H, Phillips L, Bratu I, Nascimento B, Pinto R, Callum J, Tien H, Rizoli S, McMullan J, McGlasson R, Mahomed N, Flannery J, Bir C, Baillie F, Coates A, Asiri S, Foster P, Baillie F, Bhandari M, Phillips L, Bratu I, Schuurman N, Oliver L, Nathens A, Yazdani A, Alhabboubi M, St. Louis E, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, St. Louis E, Alhabboubi M, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, Takada M, Sawano M, Ito H, Tsutsumi H, Keenan A, Waggott M, Hoshizaki B, Brien S, Gilchrist M, Janis J, Phelan H, Minei J, Santana M, Stelfox H, McCredie V, Leung E, Garcia G, Rizoli S, Nathens A, Dixon E, Niven D, Kirkpatrick A, Feliciano D, D’Amours S, Ball C, Ahmed N, Izadi H, McFarlan A, Nathens A, Pavenski K, Nathens A, Bridge J, Tallon J, Leeper W, Vogt K, Stewart TC, Gray D, Parry N, Ameer A, Alhabboubi M, Alzaid S, Deckelbaum D, Fata P, Khwaja K, Razek T, Deckelbaum D, Drudi L, Boulva K, Rodrigue N, Khwaja K, Chughtai T, Fata P, Razek T, Rizoli S, Carreiro P, Lisboa T, Winter P, Ribeiro E, Cunha-Melo J, Andrade M, Zygun D, Grendar J, Ball C, Robertson H, Ouellet JF, Cheatham M, Kirkpatrick A, Ball C, Ouellet JF, McBeth P, Kirkpatrick A, Dixon E, Groff P, Inaba K, Okoye O, Pasley J, Demetriades D, Al-Harthi F, Cheng A, Lalani A, Mikrogianakis A, Cayne S, Knittel-Keren D, Gomez M, Stelfox H, Turgeon A, Lapointe J, Bourgeois G, Karton C, Rousseau P, Hoshizaki B, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Rousseau P, Braga B, Faleiro R, Magaldi M, Cardoso G, Lozada W, Duarte L, Rizoli S, Ball C, Oddone-Paolucci E, Doig C, Kortbeek J, Gomez M, Fish J, Leach L, Leelapattana P, Fleming J, Bailey C, Nolan B, DeMestral C, McFarlan A, Zakirova R, Nathens A, Dabbs J, Duff D, Michalak A, Mitchell L, Nathens A, Singh M, Topolovec-Vranic J, Tymianski D, Yetman L, Canzian S, MacPhail I, Constable L, van Heest R, Tam A, Mahadevan P, Kim D, Bansal V, Casola G, Coimbra R, Gladwin C, Misra M, Kumar S, Gautam S, Sorvari A, Blackwood B, Coates A, Baillie F, Stelfox H, Nathens A, Wong C, Straus S, Haas B, Lenartowicz M, Parkovnick M, Parry N, Inaba K, Dixon E, Salim A, Pasley J, Kirkpatrick A, Ouellet JF, Niven D, Kirkpatrick A, Ball C, Neto C, Nogueira G, Fernandes M, Almeida T, de Abreu EMS, Rizoli S, Abrantes W, Taranto V, Parry N, Forbes T, Knight H, Keenan A, Yoxon H, Macpherson A, Bridge J, Topolovec-Vranic J, Mauceri J, Butorac E, Ahmed N, Holmes J, Gilliland J, Healy M, Tanner D, Polgar D, Fraser D, McBeth P, Crawford I, Tiruta C, Ball C, Kirkpatrick A, Roberts D, Ferri M, Bobrovitz N, Khandwala F, Stelfox H, Widder S, Mckee J, Hogan A, Benjamin S, Atkinson P, Benjamin S, Watson I, Hogan A, Benjamin S, Woodford S, Jaramillo DG, Nathens A, Alonazi N, Coates A, Baillie F, Zhang C, McFarlan A, Sorvari A, Chalklin K, Canzian S, Nathens A, DeMestral C, Hill A, Langer J, Nascimento B, Alababtain I, Fung SY, Passos E, Luz L, Brnjac E, Pinto R, Rizoli S, Widder S, Widder S, Widder S, Nathens A, Van Heest R, Constable L, Mancini F, Heidary B, Bell N, Appleton L, Hennecke P, Taunton J, Khwaja K, O’Connor M, Hameed M, Garraway N, Simons R, Evans D, Taulu T, Quinn L, Kuipers D, Rizoli S, Rogers C, Geerts W, Rhind S, Rizoli S, George K, Quinn L, Babcock C, Hameed M, Simons R, Caron N, Hameed M, Simons R, Prévost F, Razek T, Khwaja K, Sudarshan M, Razek T, Fata P, Deckelbaum D, Khwaja K, de Abreu EMS, Neto C, Almeida T, Pastore M, Taranto V, Fernandes M, Rizoli S, Nascimento B, Sankarankutty A, Pinto R, Callum J, Tremblay L, Tien H, Fowler R, Pinto R, Nathens A, Sadoun M, Harris J, Friese R, Kulvantunyou N, O’Keeffe T, Wynne J, Tang A, Green D, Rhee P, Trpkovski J, Blount V. Trauma Association of Canada Annual Scientific Meeting abstractsErythroopoietin resuscitated with normal saline, Ringer’s lactate and 7.5% hypertonic saline reduces small intestine injury in a hemorrhagic shock and resuscitation rat model.Analgesia in the management of pediatric trauma in the resuscitative phase: the role of the trauma centre.Multidisciplinary trauma team care in Kandahar, Afghanistan: current injury patterns and care practices.Does computed tomography for penetrating renal injury reduce renal exploration? An 8-year review at a Canadian level 1 trauma centre.The other side of pediatric trauma: violence and intent injury.Upregulation of activated protein C leads to factor V deficiency in early trauma coagulopathy.A provincial integrated model of improved care for patients following hip fracture.Sports concussion: an Olympic boxing model comparing sex with biomechanics and traumatic brain injury.A multifaceted quality improvement strategy to optimize monitoring and management of delirium in trauma patients: results of a clinician survey.Risk factors for severe all-terrain vehicle injuries in Alberta.Evaluating potential spatial access to trauma centre care by severely injured patients.Incidence of brain injury in facial fractures.Surgical outcomes and the acute care surgery service.The acute care general surgery population and prognostic factors for morbidity and mortality.Disaster preparedness of trauma.What would you like to know and how can we help you? Assessing the needs of regional trauma centres.Posttraumatic stress disorder screening for trauma patients at a level 1 trauma centre.Physical and finite element model reconstruction of a subdural hematoma event.Abdominal wall reconstruction in the trauma patient with an open abdomen.Development and pilot testing of a survey to measure patient and family experiences with injury care.Occult shock in trauma: What are Canadian traumatologists missing?Timeliness in obtaining emergent percutaneous procedures for the severely injured patient: How long is too long?97% of massive transfusion protocol activations do not include a complete hemorrhage panel.Trauma systems in Canada: What system components facilitate access to definitive care?The role of trauma team leaders in missed injuries: Does specialty matter?The adverse consequences of dabigatran among trauma and acute surgical patients.A descriptive study of bicycle helmet use in Montréal.Factor XIII, desmopressin and permissive hypotension enhance clot formation compared with normotensive resuscitation: uncontrolled hemorrhagic shock model.Negative pressure wound therapy for critically ill adults with open abdominal wounds: a systematic review.The “weekend warrior:” Fact or fiction for major trauma?Canadian injury preventon curriculum: a means to promote injury prevention.Penetrating splenic trauma: Safe for nonoperative management?The pediatric advanced trauma life support course: a national initiative.The effectiveness of a psycho-educational program among outpatients with burns or complex trauma.Trauma centre performance indicators for nonfatal outcomes: a scoping review.The evaluation of short track speed skating helmet performance.Complication rates as a trauma care performance indicator: a systematic review.Unplanned readmission following admission for traumatic injury: When, where and why?Reconstructions of concussive impacts in ice hockey.How does head CT correlate with ICP monitoring and impact monitoring discontinuation in trauma patients with a Marshall CT score of I–II?Impact of massive transfusion protocol and exclusion of plasma products from female donors on outcome of trauma patients in Calgary region of Alberta Health Services.Primary impact arthrodesis for a neglected open Weber B ankle fracture dislocation.Impact of depression on neuropsychological functioning in electrical injury patients.Predicting the need for tracheostomy in patients with cervical spinal cord injury.Predicting crumping during computed tomography imaging using base deficit.Feasibility of using telehomecare technology to support patients with an acquired brain injury and family care-givers.Program changes impact the outcomes of severely injured patients.Do trauma performance indicators accurately reflect changes in a maturing trauma program?One-stop falls prevention information for clinicians: a multidisciplinary interactive algorithm for the prevention of falls in older adults.Use of focused assessment with sonography for trauma (FAST) for combat casualties in forward facilities.Alberta All-terrain Vehicle Working Group: a call to action.Observations and potential role for the rural trauma team development course (RTTDC) in India.An electronic strategy to facilitate information-sharing among trauma team leaders.Development of quality indicators of trauma care by a consensus panel.An evaluation of a proactive geriatric trauma consultation service.Celebrity injury-related deaths: Is a gangster rapper really gangsta?Prevention of delirium in trauma patients: Are we giving thiamine prophylaxis a fair chance?Intra-abdominal injury in patients who sustain more than one gunshot wound to the abdomen: Should non-operative management be used?Retrospective review of blunt thoracic aortic injury management according to current treatment recommendations.Telemedicine for trauma resuscitation: developing a regional system to improve access to expert trauma care in Ontario.Comparing trauma quality indicator data between a pediatric and an adult trauma hospital.Using local injury data to influence injury prevention priorities.Systems saving lives: a structured review of pediatric trauma systems.What do students think of the St. Michael’s Hospital ThinkFirst Injury Prevention Strategy for Youth?An evidence-based method for targeting a shaken baby syndrome prevention media campaign.The virtual mentor: cost-effective, nurse-practitioner performed, telementored lung sonography with remote physician guidance.Quality indicators used by teaching versus nonteaching international trauma centres.Compliance to advanced trauma life support protocols in adult trauma patients in the acute setting.Closing the quality improvement loop: a collaborative approach.National Trauma Registry: “collecting” it all in New Brunswick.Does delay to initial reduction attempt affect success rates for anterior shoulder dislocation (pilot study)?Use of multidisciplinary, multi-site morbidity and mortality rounds in a provincial trauma system.Caring about trauma care: public awareness, knowledge and perceptions.Assessing the quality of admission dictation at a level 1 trauma centre.Trauma trends in older adults: a decade in review.Blunt splenic injury in patients with hereditary spherocytosis: a population-based analysis.Analysis of trauma team activation in severe head injury: an institutional experience.ROTEM results correlate with fresh frozen plasma transfusion in trauma patients.10-year trend of assault in Alberta.10-year trend in alcohol use in major trauma in Alberta.10-year trend in major trauma injury related to motorcycles compared with all-terrain vehicles in Alberta.Referral to a community program for youth injured by violence: a feasibility study.New impaired driving laws impact on the trauma population at level 1 and 3 trauma centres in British Columbia, Canada.A validation study of the mobile medical unit/polyclinic team training for the Vancouver 2010 Winter Games.Inferior vena cava filter use in major trauma: the Sunny-brook experience, 2000–2011.Relevance of cellular microparticles in trauma-induced coagulopathy: a systemic review.Improving quality through trauma centre collaboratives.Predictors of acute stress response in adult polytrauma patients following injury.Patterns of outdoor recreational injury in northern British Columbia.Risk factors for loss-to-follow up among trauma patients include functional, socio-economic, and geographic determinants: Would mandating opt-out consent strategies minimize these risks?Med-evacs and mortality rates for trauma from Inukjuak, Nunavik, Quebec.Review of open abdomens in McGill University Health Centre.Are surgical interventions for trauma associated with the development of posttraumatic retained hemothorax and empyema?A major step in understanding the mechanisms of traumatic coagulopathy: the possible role of thrombin activatable fibrinolysis inhibitor.Access to trauma centre care for patients with major trauma.Repeat head computed tomography in anticoagulated traumatic brain injury patients: still warranted.Improving trauma system governance. Can J Surg 2012. [DOI: 10.1503/cjs.006312] [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: 11/01/2022] Open
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Vanderijst JF, Debieve F, Doucet F, Emonts P, Haumont S, Hubinont C, Kirkpatrick C, Philips JC, Pintiaux A, Rousseau P, Senterre G, Vandeleene B, Féry F. [Screening strategy and diagnostic criteria for gestational diabetes. Proposals of the GGOLFB]. Rev Med Liege 2012; 67:179-185. [PMID: 22670444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
For nearly 50 years, the strategy of screening and the diagnostic criteria for gestational diabetes have been the subject of endless controversies. They differ between countries and from one center to another, mainly because of the lack of hard data allowing to define glycemic thresholds at which a therapeutic management is needed. Recently, a large observational study has demonstrated the existence of a robust relationship between maternal blood sugar and several fetomaternal perinatal complications. This relationship is linear, with no clear threshold that would define gestational diabetes unambiguously. Meanwhile, two randomized intervention trials have shown that the therapeutic management of mild gestational diabetes was associated with improved perinatal outcomes. Based on these data, the "International Association of Diabetes and Pregnancy Study Group" (IADPSG) released new recommendations on screening methods and diagnostic criteria for gestational diabetes. Although already endorsed by several international associations and implemented in some countries, these recommendations still raise questions and criticisms. This is why the "Groupement des Gynécologues Obstétriciens de Langue Française de Belgique" (GGOLFB) organized a meeting between diabetologists and gynecologists which allowed to reach a consensus on the strategy that we intend to implement in our respective centers. The purpose of this paper is to briefly overview the recent advances in gestational diabetes and more particularly to make our key conclusions known to the medical community. This will enable the standardization of the management of gestational diabetes in the French-speaking part of Belgium.
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Vanderijst JF, Debiève F, Doucet F, Emonts P, Haumont S, Hubinont C, Kirkpatrick C, Philips JC, Pintiaux A, Rousseau P, Senterre G, Vandeleene B, Féry F. [Screening strategy and diagnostic criteria for gestational diabetes. Proposals of the GGOLFB]. Rev Med Brux 2012; 33:97-104. [PMID: 22812055] [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: 06/01/2023]
Abstract
For nearly 50 years, the strategy of screening and the diagnostic criteria for gestational diabetes have been the subject of endless controversies. They differ between countries and from one center to another, mainly because of the lack of hard data allowing to define glycemic thresholds at which a therapeutic management is needed. Recently, a large observational study has demonstrated the existence of a robust relationship between maternal blood sugar and several fetomaternal perinatal complications. This relationship is linear, with no clear threshold that would define gestational diabetes unambiguously. Meanwhile, two randomized intervention trials have shown that the therapeutic management of mild gestational diabetes was associated with improved perinatal outcomes. Based on these data, the " International Association of Diabetes and Pregnancy Study Group "(IADPSG) released new recommendations on screening methods and diagnostic criteria for gestational diabetes. Although already endorsed by several international associations and implemented in some countries, these recommendations still raise questions and criticisms. This is why the "Groupement des Gynécologues Obstétriciens de Langue Française de Belgique " (GGOLFB) organized a meeting between diabetologists and gynecologists which allowed to reach a consensus on the strategy that we intend to implement in our respective centers. The purpose of this paper is to briefly overview the recent advances in gestational diabetes and more particularly to make our key conclusions known to the medical community. This will enable the standardization of the management of gestational diabetes in the French-speaking part of Belgium.
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Seitz F, Holm AIS, Zettergren H, Johansson HAB, Rosén S, Schmidt HT, Ławicki A, Rangama J, Rousseau P, Capron M, Maisonny R, Domaracka A, Adoui L, Méry A, Manil B, Huber BA, Cederquist H. Polycyclic aromatic hydrocarbon-isomer fragmentation pathways: Case study for pyrene and fluoranthene molecules and clusters. J Chem Phys 2011; 135:064302. [DOI: 10.1063/1.3622589] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rousseau P, Huguier V, Fernandez L, Potier B, Arnaud D, Darsonval V. [Conchal flap with a superior pedicle to reconstruct the middle or upper third of the auricle]. ANN CHIR PLAST ESTH 2011; 57:356-65. [PMID: 21684056 DOI: 10.1016/j.anplas.2011.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Accepted: 05/11/2011] [Indexed: 11/24/2022]
Abstract
The middle or upper third of the auricle can be reconstructed with a composite chondro-cutaneous peninsular flap of the conchal part of the auricle. This peninsular flap is based on the anastomotic network between the posterior auricular and the superficial temporal artery. The authors report their experience about 24 clinical cases. Most of the cases were partial auricular amputations for squamous cell carcinoma. The surgical procedure allows a hidden cartilaginous donor site, the concha, allowing in a single operation a color- and texture-matched reconstruction. This flap represents an alternative to more complex surgical procedures, and can easily be realised under local anaesthesia.
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Affiliation(s)
- P Rousseau
- Service de chirurgie plastique, esthétique et reconstructrice, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex 01, France.
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Whelan TJ, Olivotto I, Ackerman I, Chapman JW, Chua B, Nabid A, Vallis KA, White JR, Rousseau P, Fortin A, Pierce LJ, Manchul L, Craighead P, Nolan MC, Bowen J, McCready DR, Pritchard KI, Levine MN, Parulekar W. NCIC-CTG MA.20: An intergroup trial of regional nodal irradiation in early breast cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.18_suppl.lba1003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA1003 Background: Randomized trials have demonstrated that locoregional radiation after mastectomy reduces locoregional recurrence and improves overall survival (OS) in women with node positive breast cancer treated with adjuvant systemic therapy. MA.20 evaluated the addition of regional nodal irradiation (RNI) to whole breast irradiation (WBI) following breast conserving surgery (BCS). Methods: Women with high risk node-negative or node-positive breast cancer treated with BCS and adjuvant chemotherapy and/or endocrine therapy were stratified by positive nodes, axillary nodes removed, chemo- and endocrine therapy and randomized to WBI (50Gy in 25 fractions +/- boost irradiation) or WBI plus RNI (45Gy in 25 fractions) to the internal mammary, supraclavicular, and high axillary lymph nodes. The primary outcome was OS. The Data Safety Monitoring Committee approved the analysis plan for the protocol specified interim analysis of relapse patterns, survival and toxicity at 5 years. Upon review of the data, they recommended release of the results. Results: Between March 2000 to March 2007, 1,832 women were randomly assigned to WBI+RNI (916) or WBI (916). Median follow-up was 62 months. Characteristics of the study population were: mean age, 53.3 years; node negative, 10%; 1-3 positive nodes, 85%; > 4 positive nodes, 5%; adjuvant chemotherapy, 91%; and adjuvant endocrine therapy, 71%. WBI+RNI in comparison to WBI alone was associated with an improvement in isolated locoregional disease free survival (DFS; HR=.59, p=.02, 5 year risk: 96.8% and 94.5% respectively), distant DFS (HR=.64, p=.002, 5 year risk: 92.4% and 87.0% respectively), DFS (HR=.68, p=.003, 5 year risk: 89.7% and 84.0% respectively) and OS (HR=.76, p=.07, 5 year risk: 92.3% and 90.7% respectively). WBI+RNI in comparison to WBI was associated with an increase in grade 2 or greater pneumonitis (1.3% and 0.2% respectively, p=.01), and lymphedema (7.3% and 4.1% respectively, p=.004). Conclusions: The majority of women with node positive breast cancer are now managed by BCS followed by WBI and adjuvant systemic therapy. Results from MA.20 demonstrate that additional RNI reduces the risk of locoregional and distant recurrence, and improves DFS with a trend in improved OS.
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Affiliation(s)
- T. J. Whelan
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - I. Olivotto
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - I. Ackerman
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - J. W. Chapman
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - B. Chua
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - A. Nabid
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - K. A. Vallis
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - J. R. White
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - P. Rousseau
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - A. Fortin
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - L. J. Pierce
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - L. Manchul
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - P. Craighead
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - M. C. Nolan
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - J. Bowen
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - D. R. McCready
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - K. I. Pritchard
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - M. N. Levine
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
| | - W. Parulekar
- Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON, Canada; British Columbia Cancer Agency, Vancouver, BC, Canada; Toronto Sunnybrook Reg Cancer Center, Toronto, ON, Canada; NCIC Clinical Trials Group, Queen's University, Kingston, ON, Canada; Peter MacCallum Cancer Centre, Melbourne, Australia; Centre Hospitalier de Sherbrooke, Sherbrooke, QC, Canada; Oxford University, Oxford, England; Radiation Therapy Oncology Group and Medical College of Wisconsin, Milwaukee, WI; Centre Hopitalier
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Whelan TJ, Olivotto I, Ackerman I, Chapman JW, Chua B, Nabid A, Vallis KA, White JR, Rousseau P, Fortin A, Pierce LJ, Manchul L, Craighead P, Nolan MC, Bowen J, McCready DR, Pritchard KI, Levine MN, Parulekar W. NCIC CTG MA.20: An intergroup trial of regional nodal irradiation in early breast cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.lba1003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [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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Rousseau P, Zimmermann S, Schupp W, Schmelzeisen R, Otten JE. [Sensibility changes of the infraorbital nerve after primary surgery on patients with unilateral cleft lip according to J. Delaire]. ANN CHIR PLAST ESTH 2011; 57:260-6. [PMID: 21420775 DOI: 10.1016/j.anplas.2011.02.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 02/09/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The aim was to determine the overall sensibility changes in the area of the infraorbital nerve on patients with unilateral clefts lips and unilateral clefts lips and palate who had undergone primary surgical correction according to the principles of Delaire. PATIENTS AND METHOD Twenty patients (7-20years) with unilateral cleft lips (and palate) who had undergone surgery in infancy according to Delaire were included. Cutaneous sensibilities of the nasolabial fold and of the upper lip were tested using four cutaneous modalities. A tactil superficial sensibility light touch test, a two-point discrimination test (McKinnon-Dellon Disk-Criminator), and the determination of cold and warm detection thresholds (Quantitative Sensory Testing, Medoc Thermal Sensory Analyser). The possible difference of the sensibility between operated and controlateral sides of the face were compared. Results were finally compared to a control group of twenty healthy volunteers. RESULTS No significant difference could be found between the operated and non-operated side of the cleft group. There was also no difference between the cleft and the control group. Specific difference of perception between nasolabial fold and lip encountered in the literature were confirmed by the experiments. CONCLUSION The large subperiostal approach according to Delaire during the primary surgical procedure have not affected long term infraorbital sensibility of patients with unilateral complete cleft lip.
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Affiliation(s)
- P Rousseau
- Département de chirurgie orale, maxillofaciale et plastique de la face, Universitätsklinik für Zahn-, Mund-, und Kiefer- Chirurgie, Hugstetter Strasse 55, Freiburg, Germany
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Tran AT, Huet F, Ngo K, Rousseau P. Artefacts in electrochemical impedance measurement in electrolytic solutions due to the reference electrode. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.12.088] [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: 10/18/2022]
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Girault R, Rousseau P, Steyer JP, Bernet N, Béline F. Combination of batch experiments with continuous reactor data for ADM1 calibration: application to anaerobic digestion of pig slurry. Water Sci Technol 2011; 63:2575-2582. [PMID: 22049751 DOI: 10.2166/wst.2011.594] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Modelling anaerobic digestion processes is a key aspect of studying and optimizing digesters and related waste streams. However, for the satisfactory prediction of biogas production and effluent characteristics, some parameters have to be calibrated according to the characteristics of the substrates. This article describes a calibration procedure for the IWA 'Anaerobic Digestion Model no. 1' applied to the modelling of a digester for treatment of pig slurry. The most sensitive parameters were selected and calibrated combining results from a continuous digester and from batch trials run with the sludge sampled from the digester and the addition of specific substrates. According to the sensitivity analysis, acetoclastic methanogenesis, acetogenesis of propionate and acidogenesis of sugars were identified as the main sensitive steps in our case. The calibration procedure led us to modify slightly acetogenesis of propionate kinetic. However, acetoclastic methanogenesis and acidogenesis of sugars kinetics were significantly reduced by decreasing km and increasing Ks. Indeed, for instance, a decrease of km_ac from 8 to 7 day(-1) combined with an increase of Ks_ac from 0.15 to 1.5 kgCOD/m3 was necessary. After calibration, ADM1 provides an accurate simulation of the continuous reactor results.
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Affiliation(s)
- R Girault
- Cemagref, UR GERE, 17 avenue de Cucillé, CS 64427, F-35044 Rennes, France.
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Holm AIS, Zettergren H, Johansson HAB, Seitz F, Rosén S, Schmidt HT, Lawicki A, Rangama J, Rousseau P, Capron M, Maisonny R, Adoui L, Méry A, Manil B, Huber BA, Cederquist H. Ions colliding with cold polycyclic aromatic hydrocarbon clusters. Phys Rev Lett 2010; 105:213401. [PMID: 21231303 DOI: 10.1103/physrevlett.105.213401] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Indexed: 05/26/2023]
Abstract
We report the first experimental study of ions interacting with clusters of polycyclic aromatic hydrocarbon (PAH) molecules. Collisions between 11.25 keV 3He+ or 360 keV 129Xe20+ and weakly bound clusters of one of the smallest PAH molecules, anthracene, show that C14H10 clusters have much higher tendencies to fragment in ion collisions than other weakly bound clusters. The ionization is dominated by peripheral collisions in which the clusters, very surprisingly, are more strongly heated by Xe20+ collisions than by He+ collisions. The appearance size is k=15 for [C ₁₄H₁₀](k)2+.
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Affiliation(s)
- A I S Holm
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
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Potier B, Arnaud D, Paillocher N, Darsonval V, Rousseau P. [Primitive neuroendocrine cancer of the breast. Post-traumatic discovery of a man]. ANN CHIR PLAST ESTH 2010; 57:630-3. [PMID: 20952117 DOI: 10.1016/j.anplas.2010.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Accepted: 09/10/2010] [Indexed: 11/16/2022]
Abstract
We report a primitive neuroendocrine breast tumor (NET) in a male. This situation is uncommon by its mode of discovery. We have treated a 74-year-old man with a lesion in the left areola initially considered as an organized hematoma due to a severe trauma. The ablation was performed by direct access under local anesthesia. The analysis of the piece has showed a NET of the breast due to the positivity of the neuroendocrine, cytokeratin and hormone markers. No other NET lesion was found, excluding the secondary origin of the breast tumor. Complementary therapies associated mastectomy, lymphadenectomy, hormonotherapy. Male breast cancer is rare. NET are exceptional, only a dozen of male NET is reported. These tumors affect a specific population and have a better prognosis than infiltrating ductal carcinoma. In our case, no causal link can be demonstrated between trauma and tumor microenvironment necessary for the growth of quiescent cancer cells.
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Affiliation(s)
- B Potier
- Service de chirurgie plastique, reconstructrice et esthétique, CHU d'Angers, France.
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Rousseau P, Arnaud D, Potier B, Huguier V, Darsonval V. [The complete dorsum nasal island flap based on the superior alar artery]. ANN CHIR PLAST ESTH 2010; 57:267-72. [PMID: 20926171 DOI: 10.1016/j.anplas.2010.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 04/02/2010] [Accepted: 08/25/2010] [Indexed: 11/17/2022]
Abstract
The complete dorsal nasal aesthetic unit can be raised in a vascular island flap based on the superior alar artery, at the level of the nasalis muscle. This flap uses the vertical glabellar cutaneous laxity. It hides scars between the nasal aesthetics units and its distal rotation point allows a pure translation of the nasal skin without distortions encountered when using medial canthal rotation flaps. This local flap is reliable and had been successfully used for four patients without complications or secondary procedures. It allows large reconstructions for up to 25 mm defects leaving minimal scars. It represents an interesting alternative for the reconstruction of defects of the nasal tip or supra tip of the nose, and has also been used for alar reconstructions.
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Affiliation(s)
- P Rousseau
- Service de chirurgie plastique, esthétique et reconstructrice, CHU d'Angers, 4 rue Larrey, Angers cedex 01, France.
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Wang X, Bernard M, Deslouis C, Joiret S, Rousseau P. A new transfer function in electrochemistry: Dynamic coupling between Raman spectroscopy and electrochemical impedance spectroscopy. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.11.079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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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Matsuoka T, McGuffey C, Cummings PG, Horovitz Y, Dollar F, Chvykov V, Kalintchenko G, Rousseau P, Yanovsky V, Bulanov SS, Thomas AGR, Maksimchuk A, Krushelnick K. Stimulated Raman side scattering in laser wakefield acceleration. Phys Rev Lett 2010; 105:034801. [PMID: 20867770 DOI: 10.1103/physrevlett.105.034801] [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] [Received: 02/11/2010] [Indexed: 05/29/2023]
Abstract
Stimulated Raman side scattering of an ultrashort high power laser pulse is studied in experiments on laser wakefield acceleration. Experiments and simulations reveal that stimulated Raman side scattering occurs at the beginning of the interaction, that it contributes to the evolution of the pulse prior to wakefield formation, and also that it affects the quality of electron beams generated. The relativistic shift of the plasma frequency is measured.
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Affiliation(s)
- T Matsuoka
- Center for Ultrafast Optical Science and FOCUS Center, University of Michigan, Ann Arbor, Michigan 48109 USA
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Bouazaze H, Fransaer J, Huet F, Rousseau P, Vivier V. Electrolyte-resistance change due to an insulating sphere in contact with a disk electrode. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.10.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Biotteau E, Mahe G, Rousseau P, Leftheriotis G, Abraham P. Transcutaneous oxygen pressure measurements in diabetic and non-diabetic patients clinically suspected of severe limb ischemia: a matched paired retrospective analysis. INT ANGIOL 2009; 28:479-483. [PMID: 20087286] [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: 05/28/2023]
Abstract
AIM It was recently suggested that a 6 mmHg difference exists in both chest and foot transcutaneous oxygen pressure (TcPo2) between diabetic and non-diabetic volunteers apparently free from vascular disease. If a difference can also be found in diabetic and non-diabetic patients with clinically suspected critical limb ischemia (CLI), this may question the use of the same 30 mmHg threshold proposed by the "TASC" in the definition of CLI. We analyse whether a difference can be found for chest and foot TcPo2 respectively between diabetic and non-diabetic patients referred for clinically suspected CLI. METHODS A retrospective matched paired study was performed among 60 diabetic and 60 non-diabetic subjects with peripheral artery disease and suspected critical limb ischemia. Results are presented as median [25-75 centiles]. RESULTS Groups were comparable in terms of gender, age, height, systolic blood pressure and treatments (except for renin-angiotensin inhibitors). Chest-TcPo2 was 53 [43-57] mmHg in diabetic and 60[49-65] mmHg in non-diabetic patients (P<0.01). Foot-TcPo2 was 12[3-34] mmHg in diabetic and 15[3-36] mmHg in non-diabetic patients (Non significant). A multi-parametric step by step regression analysis showed that chest-TcPo2 was inversely associated with weight, then with diabetes and gender. CONCLUSIONS TcPo2 is lower at the chest but not at the foot level in diabetic than in non-diabetic patients with suspected CLI. Then, the "30 mmHg threshold" proposed in the definition of lower-limb CLI is likely applicable in both diabetic and non-diabetic patients.
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Affiliation(s)
- E Biotteau
- Department of Vascular Investigations, University Hospital, Angers, France
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Clavel S, Roy I, Carrier JF, Rousseau P, Fortin MA. Adjuvant regional irradiation after breast-conserving therapy for early stage breast cancer: a survey of canadian radiation oncologists. Clin Oncol (R Coll Radiol) 2009; 22:39-45. [PMID: 19945833 DOI: 10.1016/j.clon.2009.09.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Revised: 09/10/2009] [Accepted: 09/14/2009] [Indexed: 11/29/2022]
Abstract
AIMS To document the use of adjuvant regional irradiation after breast-conserving therapy for early stage breast cancer by Canadian radiation oncologists and to identify the factors influencing their clinical decisions. MATERIALS AND METHODS We conducted a survey to assess the above aims. In April 2008, a questionnaire was sent to 167 members of the Canadian and Quebec Associations of Radiation Oncologists with interest in breast cancer management. The answers were obtained through a dedicated website, which collected the raw data collected for analysis. RESULTS In total, 67 radiation oncologists completed the survey, corresponding to a 40% response rate. Most respondents were experienced and high-volume providers. We identified several areas of variation in the decision-making regarding regional lymph node irradiation after breast-conserving therapy. Regarding the decision to combine regional nodal irradiation with irradiation of the breast, the number of positive nodes after axillary dissection (1-3 vs > or =4) was a crucial determinant. For patients with between one and three positive nodes and a nodal ratio of 50%, most respondents added regional irradiation. Similarly, the same nodal ratio of 50% was the main factor for inclusion of the axillary nodal region in the radiation field. However, few radiation oncologists have chosen to include the internal mammary chain in their treatment plan. The number of positive lymph nodes, the nodal ratio, the number of lymph nodes removed and the presence of extracapsular extension were the primary self-reported factors that directed the decision to offer regional radiotherapy. CONCLUSIONS This survey showed that there is a wide variation of practices among radiation oncologists in Canada. These results support the need for treatment guidelines and provide guidance on which factors should be included in a decision-making algorithm.
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Affiliation(s)
- S Clavel
- Department of Radiation Oncology, Centre hospitalier de l'université de montréal (CHUM), Montréal, Québec, Canada.
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Rousseau P. Découverte d’un cancer pendant la grossesse: quand la grossesse s’interrompt ! Première partie: le rôle du gynécologue. PSYCHO-ONCOLOGIE 2009. [DOI: 10.1007/s11839-009-0131-3] [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: 10/20/2022]
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