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Clarke J, Neveu P, Khosla KE, Verhagen E, Vanner MR. Cavity Quantum Optomechanical Nonlinearities and Position Measurement beyond the Breakdown of the Linearized Approximation. Phys Rev Lett 2023; 131:053601. [PMID: 37595248 DOI: 10.1103/physrevlett.131.053601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 05/05/2023] [Accepted: 06/28/2023] [Indexed: 08/20/2023]
Abstract
Several optomechanics experiments are now entering the highly sought nonlinear regime where optomechanical interactions are large even for low light levels. Within this regime, new quantum phenomena and improved performance may be achieved; however, a corresponding theoretical formalism of cavity quantum optomechanics that captures the nonlinearities of both the radiation-pressure interaction and the cavity response is needed to unlock these capabilities. Here, we develop such a nonlinear cavity quantum optomechanical framework, which we then utilize to propose how position measurement can be performed beyond the breakdown of the linearized approximation. Our proposal utilizes optical general-dyne detection, ranging from single to dual homodyne, to obtain mechanical position information imprinted onto both the optical amplitude and phase quadratures and enables both pulsed and continuous modes of operation. These cavity optomechanical nonlinearities are now being confronted in a growing number of experiments, and our framework will allow a range of advances to be made in, e.g., quantum metrology, explorations of the standard quantum limit, and quantum measurement and control.
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Affiliation(s)
- J Clarke
- QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - P Neveu
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - K E Khosla
- QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - E Verhagen
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - M R Vanner
- QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
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Neveu P, Ouzaid I, Roumiguié M, Moschini M, Mathieu R, Verhoest G, Shariat S, Hermieu J, Xylinas E. Impact de la taille tumorale sur le pronostic des tumeurs de la voie excrétrice urinaire supérieure de bas risque. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.119] [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: 11/30/2022]
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Neveu P, Delpy J, Liu S, Banerjee C, Lugani J, Bretenaker F, Brion E, Goldfarb F. Generation of squeezed light vacuum enabled by coherent population trapping. Opt Express 2021; 29:10471-10479. [PMID: 33820181 DOI: 10.1364/oe.419495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
We demonstrate the possibility to generate squeezed vacuum states of light by four wave mixing (FWM) enabled coherent population trapping in a metastable helium cell at room temperature. Contrary to usual FWM far detuned schemes, we work at resonance with an atomic transition. We investigate the properties of such states and show that the noise variances of the squeezed and anti-squeezed quadratures cannot be explained by the simple presence of losses. A specific model allows us to demonstrate the role played by spontaneous emitted photons, which experience squeezing while propagation inside of the cell. This theoretical model, which takes into account both residual absorption and spontaneous emission, leads to an excellent agreement with the experimental data without any adjusted parameter.
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Hermieu N, Schoentgen N, Aoun R, Neveu P, Grassano Y, Egrot C, Kassem A, Xylinas E, Ouzaid I, Hermieu JF. [Surgical management of suburethral sling complications and functional outcomes]. Prog Urol 2020; 30:402-410. [PMID: 32409239 DOI: 10.1016/j.purol.2020.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/14/2020] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To identify various clinical presentation leading to the diagnosis of mid-urethral sling (MUS) complications and to analyze the functional outcomes after surgical management of these complications. METHOD Retrospective observational monocentric study of all patients treated by MUS section or removal, between December 2005 and October 2019, in a pelviperineology centre. RESULTS During this study, 96 patients were included. MUS complications surgically managed were vaginal mesh exposure (48 %), urethral mesh exposure (17 %), bladder mesh exposure (10 %); dysuria (30 %), pain (6 %), and infection (3 %). The mean time to diagnosis was 2 years. This diagnosis delay was caused by a non-specific and heterogeneous symptomatology. Surgical management consisted in MUS partial removal (79 %) and MUS simple section (21 %) with low perioperative morbidity. At three months follow-up, 36 patients (53 %) had stress urinary incontinence (SUI), including 13 (19 %) de novo (meaning no SUI before MUS section/removal) and 19 (28 %) had overactive bladder, including 9 (13 %) de novo. Half of the patients with SUI after MUS section/removal were able to be treated by a second MUS with a success rate of 83 % at 3 years. CONCLUSION Clinical presentation of MUS complications is heterogeneous. Surgical treatment was associated with low morbidity in our study. Post-operatively, half of the patients had SUI and a second MUS was a relevant treatment option after proper evaluation. LEVEL OF EVIDENCE 4.
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Affiliation(s)
- N Hermieu
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France; Université de Paris, Paris, France
| | - N Schoentgen
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France.
| | - R Aoun
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France
| | - P Neveu
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France; Université de Paris, Paris, France
| | - Y Grassano
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France
| | - C Egrot
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France
| | - A Kassem
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France
| | - E Xylinas
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France; Université de Paris, Paris, France
| | - I Ouzaid
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France; Université de Paris, Paris, France
| | - J F Hermieu
- Service de chirurgie urologique, centre hospitalier universitaire Bichat Claude-Bernard, 46, rue Henri-Huchard, 75018 Paris, France; Université de Paris, Paris, France
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Neveu P, Maynard MA, Bouchez R, Lugani J, Ghosh R, Bretenaker F, Goldfarb F, Brion E. Coherent Population Oscillation-Based Light Storage. Phys Rev Lett 2017; 118:073605. [PMID: 28256885 DOI: 10.1103/physrevlett.118.073605] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Indexed: 06/06/2023]
Abstract
We theoretically study the propagation and storage of a classical field in a Λ-type atomic medium using coherent population oscillations (CPOs). We show that the propagation eigenmodes strongly relate to the different CPO modes of the system. Light storage in such modes is discussed by introducing a "populariton" quantity, a mixture of populations and field, by analogy to the dark state polariton used in the context of electromagnetically induced transparency light storage protocol. As experimentally shown, this memory relies on populations and is then-by contrast with usual Raman coherence optical storage protocols-robust to dephasing effects.
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Affiliation(s)
- P Neveu
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - M-A Maynard
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - R Bouchez
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - J Lugani
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - R Ghosh
- Shiv Nadar University, Gautam Budh Nagar, Uttar Pradesh 201314, India
| | - F Bretenaker
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - F Goldfarb
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - E Brion
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 91405 Orsay, France
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Adam-Blondon AF, Alaux M, Pommier C, Cantu D, Cheng ZM, Cramer GR, Davies C, Delrot S, Deluc L, Di Gaspero G, Grimplet J, Fennell A, Londo JP, Kersey P, Mattivi F, Naithani S, Neveu P, Nikolski M, Pezzotti M, Reisch BI, Töpfer R, Vivier MA, Ware D, Quesneville H. Towards an open grapevine information system. Hortic Res 2016; 3:16056. [PMID: 27917288 PMCID: PMC5120350 DOI: 10.1038/hortres.2016.56] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/10/2016] [Accepted: 10/21/2016] [Indexed: 05/26/2023]
Abstract
Viticulture, like other fields of agriculture, is currently facing important challenges that will be addressed only through sustained, dedicated and coordinated research. Although the methods used in biology have evolved tremendously in recent years and now involve the routine production of large data sets of varied nature, in many domains of study, including grapevine research, there is a need to improve the findability, accessibility, interoperability and reusability (FAIR-ness) of these data. Considering the heterogeneous nature of the data produced, the transnational nature of the scientific community and the experience gained elsewhere, we have formed an open working group, in the framework of the International Grapevine Genome Program (www.vitaceae.org), to construct a coordinated federation of information systems holding grapevine data distributed around the world, providing an integrated set of interfaces supporting advanced data modeling, rich semantic integration and the next generation of data mining tools. To achieve this goal, it will be critical to develop, implement and adopt appropriate standards for data annotation and formatting. The development of this system, the GrapeIS, linking genotypes to phenotypes, and scientific research to agronomical and oeneological data, should provide new insights into grape biology, and allow the development of new varieties to meet the challenges of biotic and abiotic stress, environmental change, and consumer demand.
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Affiliation(s)
- A-F Adam-Blondon
- URGI, UR1164 INRA, Université Paris-Saclay, Versailles 78026, France
| | - M Alaux
- URGI, UR1164 INRA, Université Paris-Saclay, Versailles 78026, France
| | - C Pommier
- URGI, UR1164 INRA, Université Paris-Saclay, Versailles 78026, France
| | - D Cantu
- Department of Viticulture and Enology, University of California, Davis, CA 95616, USA
| | - Z-M Cheng
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA
| | - GR Cramer
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV 89557, USA
| | - C Davies
- CSIRO Agriculture and Food, Waite Campus, WIC West Building, PMB2, Glen Osmond, South Australia 5064, Australia
| | - S Delrot
- Université de Bordeaux, ISVV, EGFV, UMR 1287, F-33140 Villenave d’Ornon, France
| | - L Deluc
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
| | - G Di Gaspero
- Istituto di Genomica Applicata, Udine 33100, Italy
| | - J Grimplet
- Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja), Logroño 26006, Spain
| | - A Fennell
- Plant Science Department, South Dakota State University, BioSNTR, Brookings, SD 57007, USA
| | - JP Londo
- United States Department of Agriculture-Agricultural Research Service-Grape Genetics Research Unit, Geneva, NY 14456, USA
| | - P Kersey
- European Molecular Biology Laboratory, The European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - F Mattivi
- Dipartimento Qualità Alimentare e Nutrizione, Centro Ricerca ed Innovazione Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all'Adige, Italia
| | - S Naithani
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
| | - P Neveu
- UMR Mistea, INRA, Montpellier 34060, France
| | - M Nikolski
- University of Bordeaux, CBiB, Bordeaux 33000, France
- University of Bordeaux, CNRS/LaBRI, Talence 33405, France
| | - M Pezzotti
- Department of Biotechnology, Università degli Studi di Verona, Verona 37134, Italy
| | - BI Reisch
- Horticulture Section, School of Integrative Plant Science, Cornell University, Geneva, NY 14456, USA
| | - R Töpfer
- JKI Institute for Grapevine Breeding Geilweilerhof, Siebeldingen 76833, Germany
| | - MA Vivier
- Department of Viticulture and Oenology, Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, Matieland 7602, South Africa
| | - D Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- US Department of Agriculture-Agricultural Research Service, NEA Robert W. Holley Center for Agriculture and Health, Cornell University, Ithaca, NY 14853, USA
| | - H Quesneville
- URGI, UR1164 INRA, Université Paris-Saclay, Versailles 78026, France
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Lugani J, Banerjee C, Maynard MA, Neveu P, Xie W, Ghosh R, Bretenaker F, Goldfarb F. Phase-sensitive amplification via coherent population oscillations in metastable helium at room temperature. Opt Lett 2016; 41:4731-4734. [PMID: 28005879 DOI: 10.1364/ol.41.004731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this Letter, we report our experimental results on phase-sensitive amplification (PSA) in a nondegenerate signal-idler configuration using ultranarrow coherent population oscillations in metastable helium at room temperature. We achieved a high PSA gain of nearly 7 with a bandwidth of 200 kHz by using the system at resonance in a single-pass scheme. Further, the measured minimum gain is close to the ideal value, showing that we have a nearly pure PSA. This is also confirmed from our phase-to-phase transfer curves measurements, illustrating that we have a nearly perfect squeezer, which is interesting for a variety of applications.
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Thomas PA, Berbis J, Falcoz PE, Le Pimpec-Barthes F, Bernard A, Jougon J, Porte H, Alifano M, Dahan M, Alauzen M, Andro JF, Aubert M, Avaro JP, Azorin J, Bagan P, Bellenot F, Blin V, Boitet P, Bordigoni L, Borrelly J, Brichon PY, Cardot G, Carrie JM, Clement F, Corbi P, Debaert M, Debrueres B, Dubrez J, Ducrocq X, Dujon A, Dumont P, Fernoux P, Filaire M, Frassinetti E, Frey G, Gossot D, Grosdidier G, Guibert B, Hagry O, Jaillard S, Jarry JM, Kaczmarek D, Laborde Y, Lenot B, Levy F, Lombart L, Marcade E, Marcade JP, Marzelle J, Massard G, Mazeres F, Mensier E, Metois D, Michaud J, Paris E, Mondine P, Monteau M, Moreau JM, Mouroux J, Mugniot A, Mulsant P, Naffaa N, Neveu P, Pavy G, Peillon C, Pons F, Porte H, Regnard JF, Riquet M, Looyeh BS, Thomas P, Tiffet O, Tremblay B, Valla J, Velly JF, Wack B, Wagner JD, Woelffe D. National perioperative outcomes of pulmonary lobectomy for cancer: the influence of nutritional status. Eur J Cardiothorac Surg 2013; 45:652-9; discussion 659. [DOI: 10.1093/ejcts/ezt452] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Bernard O, Chachuat B, Hélias A, Le Dantec B, Sialve B, Steyer JP, Lardon L, Neveu P, Lambert S, Gallop J, Dixon M, Ratini P, Quintabà A, Frattesi S, Lema JM, Roca E, Ruiz G, Rodriguez J, Franco A, Vanrolleghem P, Zaher U, De Pauw DJW, De Neve K, Lievens K, Dochaine D, Schoefs O, Fibrianto H, Farina R, Alcaraz Gonzalez V, Gonzalez Alvarez V, Lemaire P, Martinez JA, Esandi F, Duclaud O, Lavigne JF. An integrated system to remote monitor and control anaerobic wastewater treatment plants through the internet. Water Sci Technol 2005; 52:457-64. [PMID: 16180464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The TELEMAC project brings new methodologies from the Information and Science Technologies field to the world of water treatment. TELEMAC offers an advanced remote management system which adapts to most of the anaerobic wastewater treatment plants that do not benefit from a local expert in wastewater treatment. The TELEMAC system takes advantage of new sensors to better monitor the process dynamics and to run automatic controllers that stabilise the treatment plant, meet the depollution requirements and provide a biogas quality suitable for cogeneration. If the automatic system detects a failure which cannot be solved automatically or locally by a technician, then an expert from the TELEMAC Control Centre is contacted via the internet and manages the problem.
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Affiliation(s)
- O Bernard
- COMORE, INRIA, BP93, 06902 Sophia-Antipolis Cedex, France.
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Abstract
Kinematics and structural analyses were used as basic data to elaborate a dynamic quadruped model that may represent an unspecialized mammal. Hedgehogs were filmed on a treadmill with a cinefluorographic system providing trajectories of skeletal elements during locomotion. Body parameters such as limb segments mass and length, and segments centre of mass were checked from cadavers. These biological parameters were compiled in order to build a virtual quadruped robot. The robot locomotor behaviour was compared with the actual hedgehog to improve the model and to disclose the necessary changes. Apart from use in robotics, the resulting model may be useful to simulate the locomotion of extinct mammals.
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Affiliation(s)
- P Neveu
- CNRS-UMR 8570, Laboratoire d'Anatomie Comparée, Muséum National d'Histoire Naturelle, 55, rue Buffon, 75005 Paris, France.
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Vila JP, Wagner V, Neveu P. Bayesian nonlinear model selection and neural networks: a conjugate prior approach. ACTA ACUST UNITED AC 2000; 11:265-78. [DOI: 10.1109/72.838999] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lehéricy S, van de Moortele PF, Lobel E, Paradis AL, Vidailhet M, Frouin V, Neveu P, Agid Y, Marsault C, Le Bihan D. Somatotopical organization of striatal activation during finger and toe movement: a 3-T functional magnetic resonance imaging study. Ann Neurol 1998; 44:398-404. [PMID: 9749610 DOI: 10.1002/ana.410440319] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The present study aimed at determining the distribution and somatotopical organization of striatal activation during performance of simple motor tasks. Ten right-handed healthy volunteers were studied by using a 3-T whole-body magnetic resonance unit and echo planar imaging. The tasks consisted of self-paced flexion/extension of the right fingers or toes. Motor activation was found mainly in the putamen posterior to the anterior commissure (10 of 10 subjects) and the globus pallidus (6 subjects), whereas the caudate nucleus was activated in only 3 subjects, and in a smaller area. Thus, performance of a simple motor task activated the sensorimotor territory of the basal ganglia. Within the putamen, there was a somatotopical organization of the foot and hand areas similar to that observed in nonhuman primates. These data suggest that functional magnetic resonance imaging can be used to study normal function of the basal ganglia and should therefore also allow investigation of patients with movement disorders.
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Affiliation(s)
- S Lehéricy
- Service Hospitalier Frédéric Joliot, Department of Medical Research, CEA, Orsay, France
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Baudy G, Neveu P. [Reception of the patient into the operating suite. A factor of importance for a quality anesthesia]. Soins Chir 1994:33-7. [PMID: 8009122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Klein F, Lemaire V, Sandi C, Vitiello S, Van der Logt J, Laurent PE, Neveu P, Le Moal M, Mormède P. Prolonged increase of corticosterone secretion by chronic social stress does not necessarily impair immune functions. Life Sci 1992; 50:723-31. [PMID: 1738299 DOI: 10.1016/0024-3205(92)90475-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The influence of a chronic social stress upon immunity was investigated in Wistar rats, submitted for four weeks to two different behavioral situations, balanced in a factorial design: housing with three females and membership rotation. The combination of these two factor led to adrenal enlargement (43.3%), thymus involution (39.5%) and increased basal corticosterone levels, all indices of activation of the hypothalamic-hypophysis-adrenal axis. However, neither natural killer cell activity, splenocyte reactivity to mitogen nor the rate of spontaneous development of antibodies against Mycoplasma pulmonis, a common pathogen of the respiratory tract, were changed in the endocrine activated animals. Analysis of the data on kinetics of stress at 1, 7 and 28 days after the initial mixing of the animals gave the same results. These data question the immunosuppressant activity usually conferred to corticosteroids, at least when adrenal hyperactivity is induced by chronic environmental stressors.
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Affiliation(s)
- F Klein
- Laboratoire de Psychobiologie des Comportements Adaptatifs INSERM U259-INRA, Université de Bordeaux II, France
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Lombardi P, Fournier M, Bernier J, Mansour S, Neveu P, Krzystyniak K. Evaluation of the immunomodulatory potential of diethyl dithiocarbamate derivatives. Int J Immunopharmacol 1991; 13:1073-84. [PMID: 1667650 DOI: 10.1016/0192-0561(91)90158-4] [Citation(s) in RCA: 18] [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: 12/28/2022]
Abstract
The cytotoxicity, immunotoxicity and immunomodulatory potential of four dithiocarbamate derivatives were assessed and compared with the effects of Immuthiol (diethyl dithiocarbamate, DE-DTC) in mice. Cellular stimulation and cell viability were examined after in vitro exposure of spleen lymphocytes to selected DTC analogues: N-methyl-D-glucamine dithiocarbamate (NMG-DTC), dimethyl dithiocarbamate (DM-DTC), dibuthyl dithiocarbamate (DB-DTC) and diisobuthyl dithiocarbamate (DIB-DTC). Lymphocyte activation by plant and bacterial mitogens: concanavalin A (Con A), phytohaemagglutinin (PHA), lipopolysaccharide (LPS) and allogeneic stimulation of cells in mixed lymphocyte reaction (MLR) were examined in vitro in the presence of 10(-4)-10(-9) g/ml DE-DTC and other selected DTC derivatives. No direct in vitro lymphoproliferative activity of DTC derivatives was observed, although a relatively stronger cytotoxicity with DE-DTC and DM-DTC was noted. In addition, the in vivo effects of DTC derivatives were examined by cytofluorometric profile of splenic and bone marrow cells as well as in mitogenic and allogenic responses, after i.v. exposures of animals to two subsequent (25 mg/kg b.w.) doses of the chemical. Less cytotoxic DIB-DTC, NMG-DTC and DB-DTC expressed weak in vivo immunostimulatory potential when compared with the effect of DE-DTC, whereas the effects of DM-DTC on alloantigenic and mitogenic lymphocyte stimulation were comparable with the known effects of DE-DTC. Cytofluorometric studies showed that the number of cytotoxic/suppressor T-cells (Ts) and helper T-cells (Th) in the cell was increased by DE-DTC and NMG-DTC only. In addition, DM-DTC appeared to affect the Ts/Th ratio. DE-DTC did not affect the B-cell subpopulation, whereas other derivatives induced marked modifications of the pre-B-cell subpopulations in bone marrow. Our data suggest that in vivo the immunostimulatory effect of DM-DTC could be accompanied with major changes in bone marrow B-cell frequency and alteration of spleen Ts/Th ratio.
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Affiliation(s)
- P Lombardi
- Département des Sciences Biologiques, Université du Québec à Montréal, Canada
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Tinturier F, Tondriaux A, Lobjoie E, Khoury A, Groshens A, Galy C, Neveu P, Ossart M. [Choice of an anesthetic technic for venous surgery of the lower limbs]. Phlebologie 1989; 42:59-68. [PMID: 2755983] [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: 01/02/2023]
Abstract
The introduction of new anesthetic drugs and the option of administering anesthesia to outpatients for venous surgery of the lower limbs have modified the anesthesiologist's strategy. In addition, the final decision depends on the number of attending physicians (family doctor, phlebologist, surgeon, anesthesiologist, and of course, on the patient). The essential elements which determine the choice are: the methods preferred by the anesthesiologist, the patient's wishes, the duration, type and painful nature of the procedure. All types of anesthetic protocols may be employed. General anesthesia is often preferable because of its flexible administration and local anesthesia because it is simple to administer. Loco-regional anesthetics can be substituted for local types of anesthesia in bilateral surgical procedures but these are difficult to administer on an outpatient basis. Development of new drugs such as propofol is tending to give general anesthesia in outpatients an important role once again.
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Affiliation(s)
- F Tinturier
- Département d'Anesthésie Réanimation B, C.H.R.U., Amiens
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Neveu P, Reix T, Pietri J. [Complicated iliac aneurysm disclosed by genital hemorrhage: rupture of an iliac aneurysm into the posterior vaginal pouch]. Ann Chir 1986; 40:481-3. [PMID: 3813449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Neveu P, Reix T, Pietri J. [Evaluation of the surgical risk in surgery of aneurysms of the abdominal aorta. Therapeutic deductions. Apropos of a retrospective study of 250 surgically treated aneurysms]. J Chir (Paris) 1986; 123:119-23. [PMID: 3700499] [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: 01/07/2023]
Abstract
A retrospective study of 250 patients operated upon for infrarenal abdominal aorta aneurysm provided data for evaluation of the surgical risk as a function of three developmental situations: asymptomatic aneurysms, aneurysms evolving by subacute symptomatology and ruptured aneurysms. Mortality varied as a function of group, being 3% for the asymptomatic group, 21% for evolving aneurysms and 69% for ruptured aneurysms. Perioperative mortality was related to age and cardiovascular risk factors. Various clinical and pathologic aspects as well as means of follow up review are discussed, allowing definition of therapy as a function of previous clinical status and evolution of the aneurysm.
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Neveu P, Pietri J. [Role of reconstructive surgery in post-traumatic occlusions of the renal artery. Apropos of a case]. J Chir (Paris) 1985; 122:567-71. [PMID: 4066806] [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: 01/08/2023]
Abstract
Post-traumatic thrombosis of the renal artery was detected in a patient with multiple injuries. Based on findings in this case and those reported in the literature, the difficulties of early diagnosis, the viability of the renal parenchyma and the hypertensive risk of revascularization are discussed and an attempt made to define the place of arterial surgery in post-traumatic thrombosis of renal artery.
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Neveu P, Reix T, Abet D, Moubarak E, Pietri J. [Ruptured aneurysms of the aorta. Analysis of a series of 75 cases]. J Chir (Paris) 1985; 122:437-41. [PMID: 4044704] [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: 01/08/2023]
Abstract
Rupture of an abdominal aorta aneurysm was treated in 75 patients between 1969 and 1984. Global mortality was 70%, and factors influencing mortality, and its causes, are analyzed in this series. The presence and course of hemorrhagic shock is the essential prognostic factor, as well as the type of rupture. Mortality as a function of the groups varied between 27 and 90%. Causes of early mortality were directly related to collapse and its severity, other types of fatal complication being related to the patients general condition. Prognosis is improved by early diagnosis and rapidity of operative treatment. This series represents, in fact, only 36% of the total aneurysms operated upon during the same period, and a preventive surgical attitude is the only means of improving overall prognosis.
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Catros A, Neveu P, Baudet D, Boirret D, Morelot JL, Niçaise A, Estable A. [Surgical treatment of unilateral paralysis of the 2 levator muscles]. Bull Soc Ophtalmol Fr 1985; 85:743-8. [PMID: 3833422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Abet D, Neveu P, Ringot PL, Burnay J, Vermynck JP, Moubarak E, Pietri J. [4 cases of pulmonary arteriovenous fistula disclosed by cerebrovascular accidents]. Ann Chir 1984; 38:197-202. [PMID: 6732141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ringot PL, Burnay J, Abet D, Neveu P, Moubarak E, Gamain J, Vermynck JP, Pietri J. [Iliocaval venous thrombosis. Clinical and paraclinical aspects and therapeutic approach, apropos of 58 cases]. J Chir (Paris) 1982; 119:571-5. [PMID: 7174750] [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: 01/23/2023]
Abstract
The authors report 58 cases of ilio-femoral and ilio-caval thrombosis and emphasise the considerable contribution of two vascular function tests: Doppler and occlusion rheoplethysmography, which now compensate for clinical deficiencies. Nevertheless, phlebography remains essential in defining management which is based upon age, general condition, and the site and type of thrombosis (floating or adherent clot). An outline therapeutic approach is suggested on the basis of these data.
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Abstract
In addition to centile curves for birth weight and height of single infants, the authors offer similar biometric references for twins derived from a large French data base. The aim of the work is to assist in discovering small-for-date twins. In the actual prenatal environment, the curves show a decrease in the evolution of these growth parameters in comparison with the single pregnancy standards as early as the 30th week of pregnancy.
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Horodniceanu C, Neveu P, Sagui M, Gruner M, Neuenschwander S, Montagne JP. [Echotomography in nephroblastoma and neuroblastoma of the lumbar fossa in childhood. Comparison with intravenous pyelography and computerized tomography (author's transl)]. Arch Fr Pediatr 1981; 38:345-350. [PMID: 6266363] [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: 05/21/2023]
Abstract
The respective values of intravenous pyelography, ultrasound examination and computerized tomography are compared with the findings at surgery and with histological data in 28 children with malignant tumors of the lumbar fossa. Ultrasound proved to be of significant value in assessing the extent of the tumor. At the present time, computerized tomography is only indicated when intravenous pyelography and ultrasound examination fail to provide adequate information.
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Abet D, Bertoux JP, Vermynck JP, Neveu P, Pietri J. [Indications and results of dorsal sympathectomy in vascular syndromes of the upper limb (author's transl)]. J Chir (Paris) 1979; 116:187-92. [PMID: 489680] [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: 12/15/2022]
Abstract
The authors report 50 cases of dorsal sympathectomy followed up on the cardiovascular surgery unit of the Amiens University Hospital over a period of six years. The authors then formulate a number of reflexions concerning the clinical findings, the therapeutic indications, and the way of assessing the results of this operation in vascular syndromes of the upper limb. This is a plea in favour of this operation as, in most cases, no other treatment is comparable.
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Neveu P, Marrel P, Marchandon AM, Pautet P. [Malignant catatonia. Treatment using hibernation]. Ann Med Psychol (Paris) 1973; 2:267-74. [PMID: 4201375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Mourad N, Zager R, Neveu P. Semiautomated enzymatic method for determining serum triglycerides by use of the Beckman "DSA 560". Clin Chem 1973; 19:116-8. [PMID: 4683354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Baron A, Michel G, Delorme R, Metaireau JP, Neveu P. [Spasmodic myopia]. Bull Soc Ophtalmol Fr 1967; 67:716-7. [PMID: 5622165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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