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Roupioz L, Briottet X, Adeline K, Al Bitar A, Barbon-Dubosc D, Barda-Chatain R, Barillot P, Bridier S, Carroll E, Cassante C, Cerbelaud A, Déliot P, Doublet P, Dupouy P, Gadal S, Guernouti S, De Guilhem De Lataillade A, Lemonsu A, Llorens R, Luhahe R, Michel A, Moussous A, Musy M, Nerry F, Poutier L, Rodler A, Riviere N, Riviere T, Roujean J, Roy A, Schilling A, Skokovic D, Sobrino J. Multi-source datasets acquired over Toulouse (France) in 2021 for urban microclimate studies during the CAMCATT/AI4GEO field campaign. Data Brief 2023; 48:109109. [PMID: 37122929 PMCID: PMC10139980 DOI: 10.1016/j.dib.2023.109109] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
The CAMCATT-AI4GEO extensive field experiment took place in Toulouse, a city in the southwest of France, from 14th to 25th June 2021 (with complementary measurements performed on the 6 September 2021). Its main objective was the acquisition of a new reference dataset on an urban site to support the development and validation of data products from the future thermal infrared (TIR) satellite missions such as TRISHNA (CNES/ISRO), LSTM (ESA) and SBG (NASA). With their high spatial (between 30-60m) and temporal (2-3 days) resolutions, the future TIR satellite data will allow a better investigation of the urban climate at the neighbourhood scale. However, in order to validate the future products of these missions such as LST, air temperature, comfort index and Urban Heat Island (UHI), there is a need to accurately characterise the organisation of the city in terms of 3D geometry, spectral optical properties and both land surface temperature and emissivity (LST and LSE) at several scales. In this context, the CAMCATT-AI4GEO field campaign provides a set of airborne VISNIR-SWIR (Visible Near InfraRed - ShortWave InfraRed) hyperspectral imagery, multispectral thermal infrared (TIR) imagery and 3D LiDAR acquisitions, together with a variety of ground data collected, for some of them, simultaneously to the flight. The ground dataset includes surface reflectance measured spectrally with ASD spectroradiometers and in six spectral bands spreading from shortwave to thermal infrared and for two viewing angles with a SOC410-DHR handheld reflectometer. It is completed with LST and LSE retrieved from thermal infrared radiance acquired in six spectral bands with CIMEL radiometers. It also includes meteorological data coming from four radio soundings (one of which was taken during the flight), data routinely collected at the Blagnac airport reference station as well as air temperature and humidity acquired using instrumented cars following two different itineraries. In addition, a link is provided to access the data routinely collected by the network of weather stations set up by Toulouse Metropole in the city and its surroundings. This data paper describes this new reference urban dataset which can be useful for many applications such as calibration/validation of at-surface radiance, LST and LSE data products as well as higher level products such as air temperature or comfort index. It also provides valuable opportunities for other applications in urban climate studies, such as supporting the validation of microclimate models.
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Bobisse S, Navarro Rodrigo B, Ngo QA, Chiffelle J, Genolet R, Michel A, Saugy D, Sauvage C, Tarussio D, Arnaud M, Guillaume P, Stevenson B, Bassani-Sternberg M, Tissot S, Rusakiewicz S, Schmidt J, Dangaj D, Kandalaft L, Coukos G, Harari A. 42P Tumor-reactive CD8+ T cells in ovarian and colon cancer in tumors and cell products. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Vialatte de Pémille C, Ray A, Michel A, Stefano F, Yim T, Bruel C, Zuber M. Prevalence and prospective evaluation of cognitive dysfunctions after SARS due to SARS-CoV-2 virus. The COgnitiVID study. Rev Neurol (Paris) 2022; 178:802-807. [PMID: 35610098 PMCID: PMC9123423 DOI: 10.1016/j.neurol.2022.03.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 03/03/2022] [Accepted: 03/21/2022] [Indexed: 01/08/2023]
Affiliation(s)
- C Vialatte de Pémille
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France; Université Paris Cité, Paris, France.
| | - A Ray
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France; Université Paris Cité, Paris, France
| | - A Michel
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - F Stefano
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - T Yim
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - C Bruel
- Intensive care unit, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - M Zuber
- Neurological department, groupe hospitalier Paris Saint-Joseph, Paris, France; Université Paris Cité, Paris, France
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Porro B, Michel A, Cousson-Gélie F. Influence de la précarité sociale et du soutien social perçu, sur le retour au travail des femmes ayant un cancer du sein, dans l’année suivant le début des traitements adjuvants. PSYCHO-ONCOLOGIE 2022. [DOI: 10.3166/pson-2022-0181] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
L’objectif est d’étudier les liens entre précarité sociale, soutien social perçu et retour au travail (RAT) dans la première année suivant le début des traitements adjuvants du cancer du sein. Soixante-huit patientes incluses au début des traitements adjuvants (T0) ont été suivies à 3 (T1) et 12 mois (T2). Le soutien informatif des amis à T0 favorise le RAT à T1. La précarité et le soutien négatif à T0 et T2 sont des freins au RAT à T2. La prise en charge du RAT doit être proposée et adaptée dès le début des traitements.
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Jiguet S, Bounor-Legaré V, Melis F, Michel A. Organic-Inorganic Hybrid Material Synthesis by on Line Coupling Twin Screw Extruder with a Microwave Oven. INT POLYM PROC 2022. [DOI: 10.1515/ipp-2005-0062] [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: 11/15/2022]
Abstract
Abstract
A new process for elaborating continuously organic-inorganic hybrid materials by reactive extrusion is presented. This synthesis consists in formulating a copolymer of ethylene and vinyl acetate (EVA)/tetrapropoxysilane (TPOS or Si(OC3H7)4)/catalyst blend by a corotating twin screw extruder followed by two successive reaction steps: on line microwave crosslinking reaction and hydrolysis-condensation reactions leading to a silica network cografted onto the organic matrix.
Extrusion feed rate (Q), temperature, microwave oven power (P), and microwave curing time (tmw) were studied. Crosslinking density was evaluated before and after hydrolysis-condensation reactions and compared with the previous results obtained in static conditions. These materials tailored by an on line process present a permanent elasticity at high temperature (up to 200 °C) and a certain optical transparency. This new approach offers the possibility to synthesize massive samples based on organic-inorganic hybrid material.
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Affiliation(s)
- S. Jiguet
- Laboratoire des Matériaux Polymères et des Biomatériaux , Université Claude Bernard Lyon 1 , Villeurbanne , France
| | - V. Bounor-Legaré
- Laboratoire des Matériaux Polymères et des Biomatériaux , Université Claude Bernard Lyon 1 , Villeurbanne , France
| | - F. Melis
- Laboratoire des Matériaux Polymères et des Biomatériaux , Université Claude Bernard Lyon 1 , Villeurbanne , France
| | - A. Michel
- Laboratoire des Matériaux Polymères et des Biomatériaux , Université Claude Bernard Lyon 1 , Villeurbanne , France
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Renaudineau E, Michel A, Morice S, Hudier L, Mieli S. Comparaison du risque hémorragique entre l’emploi de calciparine curative ou celui de tinzaparine chez 192 patients insuffisants rénaux sévères. Nephrol Ther 2021. [DOI: 10.1016/j.nephro.2021.07.294] [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: 11/24/2022]
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Michel A, Siebe I, Auwärter V, Regul D, Hermanns-Clausen M. [Aconitine poisoning due to confusion of aconite leaves with lovage]. Anaesthesist 2021; 70:633-638. [PMID: 34251482 DOI: 10.1007/s00101-021-01002-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/21/2021] [Accepted: 05/31/2021] [Indexed: 11/29/2022]
Abstract
Due to a mix-up an older couple (69 years and 71 years) ate a meal with herbs from their garden that contained leaves of monkshood (Aconitum napellus). The monkshood plants grew close to the herbs in their garden. Both patients developed the typical symptoms of aconitine poisoning with paresthesia, hypotension and bradycardia. Over the course of time both developed cardiac arrhythmia with ventricular extrasystoles and required monitoring on the intensive care unit (ICU). The husband was more severely affected and needed catecholamines for successful treatment of hypotension (70/40 mmHg) and bradycardia (45 bpm). The toxicological analysis of the patients' serum taken 3.5 h after ingestion led to the detection of 1.8 ng/ml and 2.0 ng/ml aconitine, respectively. The patients were discharged in good general condition after 1 and 2 days, respectively. Monkshood (Aconitum napellus) is one of the most toxic native plants that can also be found in gardens due to its popularity as an ornamental plant. All parts of the plant contain toxic diterpenoid alkaloids, such as aconitine. Aconitine causes persistent activation of the fast voltage-gated sodium channels resulting in severe cardiac and neurological toxicity. Treatment of aconitine-induced ventricular arrhythmias is challenging as they are often refractory to electrical cardioversion and antiarrhythmic drugs.
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Affiliation(s)
- A Michel
- Zentrum für Kinder- und Jugendmedizin, Vergiftungs-Informations-Zentrale, Universitätsklinikum Freiburg, Breisacher Straße 86b, 79110, Freiburg, Deutschland.
| | - I Siebe
- Bezirkskrankenhaus für Psychiatrie, Psychotherapie und Psychosomatische Medizin, Lohr am Main, Deutschland
| | - V Auwärter
- Forensische Toxikologie, Institut für Rechtsmedizin, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Deutschland
| | - D Regul
- Zentrum für Kinder- und Jugendmedizin, Vergiftungs-Informations-Zentrale, Universitätsklinikum Freiburg, Breisacher Straße 86b, 79110, Freiburg, Deutschland
| | - M Hermanns-Clausen
- Zentrum für Kinder- und Jugendmedizin, Vergiftungs-Informations-Zentrale, Universitätsklinikum Freiburg, Breisacher Straße 86b, 79110, Freiburg, Deutschland
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de-Souza R, Adams CR, de-Melo RC, Guidolin AF, Michel A, Coimbra JLM. Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions. BRAZ J BIOL 2021; 82:e242596. [PMID: 34133566 DOI: 10.1590/1519-6984.242596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 12/05/2020] [Indexed: 11/21/2022] Open
Abstract
Hops is a new culture in Brazil. Tissue culture can be an important technique for rapid hop propagation. This paper aims to characterize responses from different genotypes under different growth regulators through the interrelationship of response variables important to hop in vitro growth. Three genotypes were cultivated in six culture media with different combinations of growth regulators, BAP (6-benzylaminopurine), IAA (3-indolacetic acid) and GA3 (gibberellic acid). The means were compared by orthogonal contrasts and the interrelationship of the response variables was performed by path analysis. American genotypes showed favorable root development under the BAP + IAA combination, while the use of IAA improved shoot development. The origin of genotypes was important for defining the best protocol for in vitro cultivation. The path coefficient showed that the variable number of shoots has stronger direct effect on the number of nodal segments. Additionally, in tissue culture assays, the use of a covariable and proper error distribution significantly increased experimental accuracy.
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Affiliation(s)
- R de-Souza
- Universidade do Estado de Santa Catarina - UDESC, Centro de Ciências Agroveterinárias - CAV, Instituto de Melhoramento e Genética Molecular - IMEGEM, Departamento de Agronomia, Programa de Pós-graduação em Produção Vegetal, Lages, SC, Brasil
| | - C R Adams
- Universidade do Estado de Santa Catarina - UDESC, Centro de Ciências Agroveterinárias - CAV, Instituto de Melhoramento e Genética Molecular - IMEGEM, Departamento de Agronomia, Programa de Pós-graduação em Produção Vegetal, Lages, SC, Brasil
| | - R C de-Melo
- Universidade do Estado de Santa Catarina - UDESC, Centro de Ciências Agroveterinárias - CAV, Instituto de Melhoramento e Genética Molecular - IMEGEM, Departamento de Agronomia, Programa de Pós-graduação em Produção Vegetal, Lages, SC, Brasil
| | - A F Guidolin
- Universidade do Estado de Santa Catarina - UDESC, Centro de Ciências Agroveterinárias - CAV, Instituto de Melhoramento e Genética Molecular - IMEGEM, Departamento de Agronomia, Programa de Pós-graduação em Produção Vegetal, Lages, SC, Brasil
| | - A Michel
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul - IFRS, Laboratório de Cultura de Tecidos e Citogenética Vegetal, Sertão, RS, Brasil
| | - J L M Coimbra
- Universidade do Estado de Santa Catarina - UDESC, Centro de Ciências Agroveterinárias - CAV, Instituto de Melhoramento e Genética Molecular - IMEGEM, Departamento de Agronomia, Programa de Pós-graduação em Produção Vegetal, Lages, SC, Brasil
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Martin D, Besson C, Pache B, Michel A, Geinoz S, Gremeaux-Bader V, Larcinese A, Benaim C, Kayser B, Demartines N, Hübner M. Feasibility of a prehabilitation program before major abdominal surgery. Br J Surg 2021. [DOI: 10.1093/bjs/znab202.095] [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: 11/14/2022]
Abstract
Abstract
Objective
Prehabilitation programs claim to improve exercise capacity and postoperative outcomes. The study aim was to assess the feasibility of a prehabilitation program and its effects on fitness and clinical outcomes after major abdominal surgery.
Methods
In this prospective pilot study, patients were assigned to high-intensity physical exercise training with 3 training sessions per week for 3 weeks preoperatively. Feasibility of this intervention was assessed based on recruitment and adherence to the training program. Impact on fitness (VO2 AT) was evaluated and correlated with complications and length of stay (LOS).
Results
Of 980 eligible patients, 87 patients (8.9%) were approached for inclusion. Main obstacles to not approach patients were insufficient time (< 3 weeks) prior to scheduled surgery (n = 276, 28.2%) or screening failure (n = 312, 31.8%). Out of these 87 patients, 24 (28%) declined to participate, 43 (49%) met exclusion criteria and 20 (23%) were included. Six patients (30%) could not complete the prehabilitation program due to contra-indication for exercise training evidenced during the test (n = 3), lack of motivation (n = 2) and modification of the planned operating date (n = 1). VO2 AT increased from 9.8 to 11.5 ml/min/kg (p = 0.050). There were no correlations between the change in VO2 AT and postoperative complications (r = -0.133, p = 0.649) and LOS (r = -0.94, p = 0.750).
Conclusion
Prehabilitation programs are difficult to implement and many patients are either not eligible or not motivated. Future efforts should concentrate on those patients who are most likely to benefit from these time- and cost-intensive interventions.
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Affiliation(s)
- D Martin
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - C Besson
- Sports Medicine Center, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - B Pache
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - A Michel
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - S Geinoz
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - V Gremeaux-Bader
- Sports Medicine Center, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - A Larcinese
- Physiotherapy, Lausanne University Hospital, Lausanne, Switzerland
| | - C Benaim
- Department of Rheumatology, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - B Kayser
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - N Demartines
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - M Hübner
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
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Boas F, Nurili F, Bendet A, Cheleuitte-Nieves C, Basturk O, Askan G, Monette S, Michel A, Schook L, Solomon S, Kelsen D, Scherz A, Yarmohammadi H. 3:09 PM Abstract No. 191 Development of a transgenic pig model of pancreatic cancer. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.230] [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: 11/25/2022] Open
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Porro B, Michel A, Zinzindohoué C, Bertrand P, Monrigal E, Trentini F, Cousson-Gélie F. Prise en charge psychologique des femmes ayant un cancer du sein. Quelles différences interindividuelles sur le développement post-traumatique durant la première année suivant le diagnostic ? PSYCHO-ONCOLOGIE 2020. [DOI: 10.3166/pson-2019-0104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Objectif : Évaluer les différences interindividuelles relatives aux changements psychologiques positifs vécus, selon que les patientes bénéficient ou non d’un suivi psychologique.
Matériel et méthodes : Le PTGI a été administré, auprès de 68 patientes atteintes d’un cancer du sein (Mâge = 46,97 ; ET = 6,92), au début des traitements adjuvants (T0) puis 6 (T1) et 12 mois (T2) après.
Résultats : Les femmes ayant reçu un suivi psychologique rapportent, à T0 et T1, de plus hauts scores de PTG, relations aux autres, nouvelles opportunités par rapport à celles qui n’ont pas bénéficié d’un suivi.
Conclusion : Ces résultats confirment qu’une prise en charge psychologique du cancer du sein permet un meilleur ajustement à la maladie.
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Michel A, Vidal J, Brigaud E, Sokratous K, Blanc N. Dessine-moi une réalité plus belle : la réalité virtuelle vue par les patientes atteintes d’un cancer du sein. PSYCHO-ONCOLOGIE 2019. [DOI: 10.3166/pson-2019-0087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Une enquête réalisée auprès de 300 femmes atteintes d’un cancer du sein a permis d’examiner leur intérêt pour la réalité virtuelle (RV), les modalités d’immersion attendues ainsi que leurs attentes vis-à-vis de ce dispositif. Les résultats indiquent que la majorité des femmes (93 %) souhaiterait avoir recours à la RV durant leurs traitements, sachant que leurs préférences d’immersion portent sur un environnement naturel accompagné de musique et/ou de relaxation guidée. La RV est envisagée comme un outil pertinent pour s’évader, mieux accepter les soins et réguler leurs émotions. Pour faciliter l’immersion virtuelle, cette étude souligne combien il est important de connaître leurs aspirations personnelles pour leur offrir un soutien technologique individualisé.
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Shinozaki K, Monte S, Ferrarese S, Manfrin M, Bertaina ME, Anzalone A, Bisconti F, Bruno A, Diaz A, Eser J, Fenu F, Michel A, Vrabel M, Wiencke L. Cloud distribution evaluated by the WRF model during the EUSO-SPB1 flight. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201921005006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
EUSO-SPB1 was a balloon-borne mission of the JEM-EUSO (Joint Experiment Missions for Extreme Universe Space Observatory) Program aiming at the ultra-high energy cosmic ray (UHECR) observations from space. We operated the EUSO-SPB1 telescope consisting of 1 m2 Fresnel refractive optics and multi-anode photomultiplier tubes. With a total of 2304 channels, each performed the photon counting every 2.5 µs, allowing for spatiotemporal imaging of the air shower events in an ~ 11°× 11° field of view. EUSO-SPB1 was the first balloon-borne fluorescence detector with a potential to detect air shower events initiated by the EeV energy cosmic rays. On 24 April 2017 UTC, EUSO-SPB1 was launched on the NASA’s Super Pressure Balloon that flew at ~16 – 33 km flight height for ~12 days. Before the flight was terminated, ~27 hours of data acquired in the air shower detection mode were transmitted to the ground. In the present work, we aim at evaluating the role of the clouds during the operation of EUSO-SPB1. We employ the WRF (Weather Research and Forecasting) model to numerically simulate the cloud distribution below EUSO-SPB1. We discuss the key results of the WRF model and the impact of the clouds on the air shower measurement and the efficiency of the cosmic ray observation. The present work is a part of the collaborative effort to estimate the exposure for air shower detections.
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Pinon L, Montel L, Mesdjian O, Bernard M, Michel A, Ménager C, Fattaccioli J. Kinetically Enhanced Fabrication of Homogeneous Biomimetic and Functional Emulsion Droplets. Langmuir 2018; 34:15319-15326. [PMID: 30507132 DOI: 10.1021/acs.langmuir.8b02721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Characterized by a fluid and deformable interface, ligand-functionalized emulsion droplets are used as model probes to address biophysical, biological, and developmental questions. Functionalization protocols usually rely on the use of headgroup-modified phospholipids that are dissolved in the oil phase prior to emulsification, leading to a broad range of surface densities within a given droplet population. With the aim to coat particles homogeneously with biologically relevant lipids and proteins (streptavidin, immunoglobulins, etc.), we developed a reliable surface decoration protocol based on the use of polar cosolvents to dissolve the lipids in the aqueous phase after the droplet production. We show that the surface density of the lipids at the interface has a narrow normal distribution for droplets having the same size. We performed titration isotherms for lipids and biologically relevant proteins on these drops. Then, we studied the influence of the presence of surfactants in the medium on lipid insertion and compared the results for a range of polar cosolvents of increasing polarity. To assess both the generality and the biocompatibility of the method, we show that we can produce more sophisticated, monodisperse functional magnetic emulsions with a very high surface homogeneity. Using an oil denser than the surrounding culture medium, we show that IgG-coated droplets can be used as probes for phagocytosis experiments.
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Affiliation(s)
- L Pinon
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
- Institut Curie, PSL University, INSERM U932 , 26 rue d'Ulm , 75248 Paris Cedex 05 , France
| | - L Montel
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
| | - O Mesdjian
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
| | - M Bernard
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
- UMR 144, Institut Curie , 12 rue Lhomond , 75005 Paris , France
| | - A Michel
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux PHENIX , 4 place Jussieu , F-75005 Paris , France
| | - C Ménager
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux PHENIX , 4 place Jussieu , F-75005 Paris , France
| | - J Fattaccioli
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
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Hansmann Y, Jaulhac B, Kieffer P, Martinot M, Wurtz E, Dukic R, Michel A, Bonomi O, Boess G, de Martino S. Manifestations infectieuses systémiques post piqûres de tiques : étude étiologique et place des coinfections. Med Mal Infect 2018. [DOI: 10.1016/j.medmal.2018.04.049] [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: 10/14/2022]
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Junger A, Quinzio L, Michel A, Sciuk G, Fuchs C, Marquardt K, Hempelmann G, Benson M. Data Processing at the Anesthesia Workstation: from Data Entry to Data Presentation. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634450] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:Main requirements for an Anesthesia Information Management System (AIMS) are the supply of additional information for the anesthesiologist at his workstation and complete documentation of the anesthetic procedure. With the implementation of an AIMS (NarkoData) and effective user support, the quality of documentation and the information flow at the anesthesia workstation could be increased. Today, more than 20,000 anesthesia procedures are annually recorded with the AIMS at 112 decentralized workstations. The network for data entry and the presentation and evaluation of data, statistics and results directly available at the clinical workstation was made operational.
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Dudeck J, Junghans G, Marquardt K, Sebald P, Michel A, Prokosch HU. WING – Entering a New Phase of Electronic Data Processing at the Gießen University Hospital. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractAt the Gielßen University Hospital electronic data processing systems have been in routine use since 1975. In the early years developments were focused on ADT functions (admission/discharge/transfer) and laboratory systems. In the next decade additional systems were introduced supporting various functional departments. In the mid-eighties the need to stop the ongoing trend towards more and more separated standalone systems was realized and it was decided to launch a strategic evaluation and planning process which sets the foundation for an integrated hospital information system (HIS). The evaluation of the HELP system for its portability into the German hospital environment was the first step in this process. Despite its recognized capabilities in integrating decision support and communication technologies, and its powerful HIS development tools, the large differences between American and German hospital organization, influencing all existing HELP applications, and the incompatibility of the HELP tools with modern software standards were two important factors forcing the investigation of alternative solutions. With the HELP experience in mind, a HIS concept for the Gießen University Hospital was developed. This new concept centers on the idea of a centralized relational patient database on a highly reliable database server, and clinical front-end applications which might be running on various other computer systems (mainframes, departmental UNIX satellites or PCs in a LAN) integrated into a comprehensive open HIS network. The first step towards this integrated approach was performed with the implementation of ADT and results reporting functions on care units.
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Junger A, Quinzio L, Michel A, Sciuk G, Brammen D, Marquardt K, Hempelmann G, Benson M. An Anesthesia Information Management System (AIMS) as a Tool for Controlling Resource Management of Operating Rooms. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634318] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives: In our department, we have been using an Anesthesia Information Management System (AIMS) for five years. In this study, we tested to what extent data extracted from the AIMS could be suitable for the supervision and time-management of operating rooms.
Methods: From 1995 to 1999, all relevant data from 103,264 anesthetic procedures were routinely recorded online with the automatic anesthesia record keeping system NarkoData. The program is designed to record patient related time data, such as the beginning of anesthesia or surgical procedure, on a graphical anesthesia record sheet. The total number of minutes of surgery and anesthesia for each surgical subspecialty per hour/day and day of the year was calculated for each of the more than 40 ORs, amounting to a total of 112 workstations.
Results: It was possible to analyze the usage and the utilization of ORs at the hospital for each day of the year since 1997. In addition, annual and monthly evaluations are made available. It is possible to scrutinize data of OR usage from different points of view: queries on the usage of an individual OR, the usage of ORs on certain days or the usage of ORs by a certain surgical subspecialty may be formulated. These data has been used repeatedly in our hospital for decision making in OR management and planning. Conclusions: In assessing the results of our study, it should be considered that the system used is not a specialized OR management tool. Despite these restrictions, the system contains data which can be used for an exact and relevant presentation of OR utilization
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Junger A, Quinzio L, Fuchs C, Michel A, Sciuk G, Marquardt K, Dudeck J, Hempelmann G, Benson M. Influence of the Method of Data Collection on the Documentation of Blood-pressure Readings with an Anesthesia Information Management System (AIMS). Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:The influence of methods for record keeping on the documentation of vital signs was assessed for the Anesthesia Information Management System (AIMS) NarkoData. We compared manually entered blood-pressure readings with automatically collected data. These data were stored in a database and subsequently evaluated and analyzed. The data sets were split into two groups, ”manual“ and ”automatic“. We evaluated the effect of automatic data collection on the incidence of corrected data, data validity and data variation. Blood-pressure readings of 37,726 data sets were analyzed. We could assess that the method of documentation did influence the data quality. It could not be assessed whether the incorrectness of data during automatic data gathering was caused by artefacts or by the anesthesiologist.
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Kulikowski C, Bohne A, Ganser K, Haux R, Knaup P, Maier C, Michel A, Singer R, Wolff AC, Ammenwerth E. Medical Imaging Informatics and Medical Informatics: Opportunities and Constraints. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives:
The Yearbook of Medical Informatics is published annually by the International Medical Informatics Association (IMIA) and contains a selection of recent excellent papers on medical informatics research (http://www.yearbook.uni-hd.de). The 2002 Yearbook of Medical Informatics took as its theme the topic of Medical Imaging Informatics. In this paper, we will summarize the contributions of medical informatics researchers to the development of medical imaging informatics, discuss challenges and opportunities of imaging informatics, and present the lessons learned from the IMIA Yearbook 2002.
Results and Conclusions:
Medical informatics researchers have contributed to the development of medical imaging methods and systems since the inception of this field approximately 40 years ago. The Yearbook presents selected papers and reviews on this important topic.In addition, as usual, the Yearbook 2002 also contains a variety of papers and reviews on other subjects relevant to medical informatics, such as Bioinformatics, Computer-supported education, Health and clinical management, Health information systems, Knowledge processing and decision support, Patient records, and Signal processing.
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Riedel O, Ohlmeier C, Enders D, Elsässer A, Vizcaya D, Michel A, Eberhard S, Schlothauer N, Berg J, Garbe E. The contribution of comorbidities to mortality in hospitalized patients with heart failure. Clin Res Cardiol 2018; 107:487-497. [PMID: 29404680 DOI: 10.1007/s00392-018-1210-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 02/01/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND Heart failure (HF) with reduced ejection fraction (HFrEF) has a worse prognosis than HF with preserved EF (HFpEF). The study aimed to evaluate whether different comorbidity profiles of HFrEF- and HFpEF-patients or HF-specific mechanisms contribute to a greater extent to this difference. METHODS We linked data from two health insurances to data from a cardiology clinic hospital information system. Patients with a hospitalization with HF in 2005-2011, categorized as HFrEF (EF < 45%) or HFpEF (EF ≥ 45%), were propensity score (PS) matched to controls without HF on comorbidites and medication to assure similar comorbidity profiles of patients and their respective controls. The balance of the covariates in patients and controls was compared via the standardized difference (SDiff). Age-standardized 1-year mortality rates (MR) with 95% confidence intervals (CI) were calculated. RESULTS 777 HFrEF-patients (1135 HFpEF-patients) were PS-matched to 3446 (4832) controls. Balance between patients and controls was largely achieved with a SDiff < 0.1 on most variables considered. The age-standardized 1-year MRs per 1000 persons in HFrEF-patients and controls were 267.8 (95% CI 175.9-359.8) and 86.1 (95% CI 70.0-102.3). MRs in HFpEF-patients and controls were 166.2 (95% CI 101.5-230.9) and 61.5 (95% CI 52.9-70.1). Thus, differences in MRs between patients and their controls were higher for HFrEF (181.7) than for HFpEF (104.7). CONCLUSIONS Given the similar comorbidity profiles between HF-patients and controls, the higher difference in mortality rates between HFrEF-patients and controls points more to HF-specific mechanisms for these patients, whereas for HFpEF-patients a higher contribution of comorbidity is suggested by our results.
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Affiliation(s)
- Oliver Riedel
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Achterstrasse 30, 28359, Bremen, Germany.
| | - C Ohlmeier
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Achterstrasse 30, 28359, Bremen, Germany
- IGES Institut GmbH, Berlin, Germany
| | - D Enders
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Achterstrasse 30, 28359, Bremen, Germany
| | - A Elsässer
- Department of Cardiology, Klinikum Oldenburg, AöR, Oldenburg, Germany
| | - D Vizcaya
- Epidemiology, Bayer AG, Berlin, Germany
| | - A Michel
- Epidemiology, Bayer AG, Berlin, Germany
| | | | - N Schlothauer
- Hausarztpraxis Dr. Stephan Spiekermann&Partner im Gesundheitszentrum, Delmenhorst, Germany
| | - J Berg
- AOK Bremen/Bremerhaven, Bremerhaven, Germany
| | - E Garbe
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Achterstrasse 30, 28359, Bremen, Germany
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Escudier A, Mauvais FX, Bastard P, Boussard C, Jaoui A, Koskas V, Lecoq E, Michel A, Orcel MC, Truelle PE, Wohrer D, Piram M. Peau et fièvres récurrentes auto-inflammatoires. Arch Pediatr 2018; 25:150-162. [DOI: 10.1016/j.arcped.2017.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 09/01/2017] [Accepted: 12/10/2017] [Indexed: 11/28/2022]
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Michel A, Alamowitch N, Gourevitch R. [Long and short stays under ASPPI: Comparison of clinical and non-clinical data from 250 initial certificates]. Encephale 2017; 44:415-420. [PMID: 29089089 DOI: 10.1016/j.encep.2017.07.003] [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: 05/24/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND On July 5, 2011, France introduced a law permitting the involuntary admission of patients considered to be in "imminent danger" into psychiatric care without the consent of the family. This is known as "admission en soins psychiatriques pour péril imminent"(ASPPI). ASPPI authorizes all physicians to hospitalize a patient without his or her consent nor the consent of a third party. This differs from previous measures as only one certificate is needed. The law also requires involuntarily admitted patients to present themselves before a judge specialized in Liberties and Detentions (juge des libertés et des détentions), 12 days following their admission. Although there has been an increase in the number of ASPPI admissions when compared to other types of involuntary admission, patients admitted by ASPPI have been hospitalized for a shorter time than others. Some authors, however, have pointed out that decision criteria are frequently interpreted in a loose manner by physicians. This study was conducted at Sainte Anne hospital in Paris. OBJECTIVE This study tried to determine if there were different clinical and non-clinical characteristics associated with the length of hospitalization under ASPPI. METHODS This study analyzed all administrative files for patients admitted under ASPPI from January 1, 2015 to December 31, 2015. These files contained the medical certificates and the court orders. The sample was split into two groups: patients hospitalized for a shorter stay and who did not present themselves to the judge and patients hospitalized for a longer stay and who did present themselves to the judge. The certificates were analyzed with a criteria grid, which includes clinical and non-clinical items. Clinical items were taken from the French High Authority of Health (Haute Autorité de Santé) 2005 recommendations. These include suicidal risk, risk to others, drug abuse, delusions or hallucinations, mood disorder and lack of selfcare. Non-clinical items include other information found in the certificate and sociodemographic information found in the administrative file. RESULTS Among the 250 certificates analyzed, 172 (68.8%) were associated with a long stay and 78 (31.2%) with a short stay. A bivariate analysis found no significant differences between the two groups for non-clinical characteristics and for drug abuse and mood disorder. When no suicidal risk was present, the stay was short in 21% of the certificates and long for 79%. When a suicidal risk was present the stay was short in 43% of the certificates and long for 57% (P=0.0002). When a risk to others was present the stay was short for 19% of the certificates and long for 81% (P=0.003). When delusions and hallucinations were present the stay was short in 15% of the certificates and long in 85 % (P=5×10e-14). When a lack of selfcare was present the stay was short in 10% of the certificates and long for 90% (P=0.01). CONCLUSION This study identified two types of situations linked with the length of hospitalization for patients under ASPPI. In one situation, associated with a longer stay, we found acute psychiatric disorders exhibited by more delusions, hallucinations, drug abuse, and lack of selfcare. In the second situation, associated with a shorter stay, this study found more episodic situations with suicidal risk. This study suggests that some involuntary admissions could be avoided if physicians could monitor episodic situations in appropriate structures. Moreover the criteria grid we used in this study should be validated to further analyze the quality of the certificates in order to lead to more precise recommendations.
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Affiliation(s)
- A Michel
- Centre psychiatrique d'orientation et d'accueil, centre hospitalier de Sainte-Anne, 1, rue Cabanis, 75014 Paris, France.
| | - N Alamowitch
- Direction des usagers et des affaires juridiques, centre hospitalier de Sainte-Anne, 1, rue Cabanis, 75014 Paris, France
| | - R Gourevitch
- Centre psychiatrique d'orientation et d'accueil, centre hospitalier de Sainte-Anne, 1, rue Cabanis, 75014 Paris, France
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Michel A, Penna S, Becker E, Dejucq-Rainsford N, Vigneau C, Mazaud-Guittot S. Toxicité fœtale de l’ibuprofène et du paracétamol sur le développement rénal : étude sur culture organotypique de reins fœtaux humains. Nephrol Ther 2017. [DOI: 10.1016/j.nephro.2017.08.327] [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: 11/25/2022]
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Reschke C, Schelling E, Michel A, Remy-Wohlfender F, Meylan M. Factors Associated with Colostrum Quality and Effects on Serum Gamma Globulin Concentrations of Calves in Swiss Dairy Herds. J Vet Intern Med 2017; 31:1563-1571. [PMID: 28833573 PMCID: PMC5598880 DOI: 10.1111/jvim.14806] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/05/2017] [Accepted: 07/13/2017] [Indexed: 11/28/2022] Open
Abstract
Background Previous studies have shown a high prevalence of failure of passive transfer of immunity (FPT) in Swiss dairy calves. Objectives To investigate risk factors associated with poor colostrum quality and FPT on Swiss dairy farms. Animals Colostrum and serum samples from 373 dam‐calf pairs at 141 farms. Methods The gamma globulin (Gg) concentrations of the dams’ colostrum and the calves’ serum samples were determined by electrophoresis. Potential risk factors were assessed by logistic regression of questionnaire data. Results Prevalence values of 15.5% (95% confidence interval [CI], 12.0–19.6%) for low‐quality colostrum (<50 g Gg/L) in cows and 43.5% (95% CI, 38.4–48.8%) for FPT (serum Gg < 10 g/L) in calves were estimated. The main factors associated with low colostrum quality included colostrum leakage before or during parturition and a time lag > 6 hours between parturition and first milking. The results confirm that the occurrence of FPT in calves primarily was influenced by the quality of colostrum, the amount of ingested colostrum, and the time between birth and first feeding. Conclusions and Clinical Importance These results confirm a large potential for improvement in colostrum harvesting and colostrum feeding procedures in the study herds. Control for colostrum leaking intra‐partum, early colostrum milking, and ensuring that the calves ingest a sufficient volume of colostrum within the first hours of life are measures that can be readily implemented by farmers to decrease the incidence of FPT without additional workload.
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Affiliation(s)
- C Reschke
- Tierarzt Heimenschwand AG, Heimenschwand, Switzerland
| | - E Schelling
- Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - A Michel
- Tierarztpraxis Kiesen AG, Kiesen, Switzerland
| | | | - M Meylan
- Clinic for Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Mollier S, Descotes J, Pasquier D, Coquillat P, Michel A, Dalsoglio S, Rambeaud J. Pseudoneoplastic
Xanthogranulomatous
Pyelonephritis. Eur Urol 2017. [DOI: 10.1159/000475152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Michel A, Martin-Perez M, Ruigomez A, Garcia Rodriguez L. P3238Risk of first ischemic cerebrovascular event in a cohort of incident heart failure patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3238] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Murphy B, Michel A, LaDouceur E, Bell C, Lin M, Imai D. Ameloblastoma of the Jaw in Three Species of Rodent: a Domestic Brown Rat ( Rattus norvegicus ), Syrian Hamster ( Mesocricetus auratus ) and Amargosa Vole ( Microtus californicus scirpensis ). J Comp Pathol 2017; 157:145-149. [DOI: 10.1016/j.jcpa.2017.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/20/2017] [Accepted: 07/04/2017] [Indexed: 11/28/2022]
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Jenkins AO, Michel A, Rutten V. Original Mycobacterial Sin, a consequence of highly homologous antigens? Vet Microbiol 2017; 203:286-293. [PMID: 28619159 DOI: 10.1016/j.vetmic.2017.03.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 12/02/2016] [Revised: 03/22/2017] [Accepted: 03/24/2017] [Indexed: 10/19/2022]
Abstract
The role of antigens shared between Mycobacteria in in-vivo cross-reactive immune responses in host animals, have been reported to be responsible for reduced BCG vaccination efficacy as well reduced specificity of routine immunological diagnostic tests. This presents with significant disease control challenges in humans and animals. The present review highlights the results of previous studies on the effect of pre-sensitization to environmental mycobacteria on either pathogenic mycobacteria and/or M. bovis BCG, in experimental animals. It also takes an in-depth view into assessing the genetic similarities and relationships between atypical mycobacteria and Mycobacterium tuberculosis complex (MTBC) and how they might explain the immunological imprint of environmental mycobacteria in directing the hosts' immune response upon subsequent exposure to other classes of mycobacteria. The outcome of this review suggests that genetic closeness between particular atypical mycobacteria and MTBC usually indicate a higher level of homology for certain shared protective antigens. This ultimately results in a higher level of cross reactive immune responses as compared with other atypical mycobacteria that are further away genetically. This would explain the different effects of environmental mycobacteria on MTBC that have been reported in the different studies. In other words the direction of the host immune system in response to exposure to MTBC would depend on the type of environmental mycobacteria that was encountered in the initial exposure. We also explain these mycobacterial interactions in the context of the phenomenon of "Original Mycobacterial Sin". The effects of these inevitable mycobacterial interactions on field diagnosis and control by vaccination and how to circumvent them are discussed.
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Affiliation(s)
- A O Jenkins
- Division of Immunology, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands; Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa.
| | - A Michel
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa
| | - V Rutten
- Division of Immunology, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands; Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa
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Barrows M, Koeppel K, Michel A, Mitchell E. Mycobacterial Arthritis and Synovitis in Painted Reed Frogs (Hyperolius marmoratus). J Comp Pathol 2017; 156:275-280. [PMID: 28233523 DOI: 10.1016/j.jcpa.2017.01.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 12/14/2016] [Revised: 01/13/2017] [Accepted: 01/19/2017] [Indexed: 11/25/2022]
Abstract
Several species of atypical mycobacteria have been isolated from wild and captive amphibians. In captive anurans, cutaneous and visceral mycobacteriosis are common and can result in significant mortality, particularly when animals are immunocompromised. Mycobacterial arthritis and synovitis are reported rarely in amphibians. We describe 20 cases in painted reed frogs (Hyperolius marmoratus), which presented with cachexia, limb paresis or paralysis or 'spindly leg syndrome'. Histopathology revealed multifocal histiocytic to granulomatous synovitis affecting appendicular, rib or spinal intervertebral joints. Periarticular granulomata, granulomatous cellulitis and skeletal muscle atrophy, necrosis and degeneration were also present. In one case, granulomatous spinal osteomyelitis was recorded. Ziehl-Neelsen stains showed large numbers of acid-fast bacteria in macrophages and histiocytes. The mycobacterial isolates obtained from culture were identified as members of the Mycobacterium chelonae complex (either M. chelonae or Mycobacterium abscessus). This was confirmed by 5'-16S ribosomal ribonucleic acid (rRNA) sequencing. In 17 cases mycobacterial lesions were present only in the joints and skeleton, highlighting the importance of not ruling out mycobacterial infection on the basis of absence of cutaneous or visceral lesions.
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Affiliation(s)
- M Barrows
- Bristol Zoological Society, Clifton, Bristol, UK.
| | - K Koeppel
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - A Michel
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort
| | - E Mitchell
- National Zoological Gardens of South Africa, Pretoria, South Africa
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Alberts CJ, Michel A, Bruisten S, Snijder MB, Prins M, Waterboer T, Schim van der Loeff MF. High-risk human papillomavirus seroprevalence in men and women of six different ethnicities in Amsterdam, the Netherlands: The HELIUS study. ACTA ACUST UNITED AC 2017; 3:57-65. [PMID: 28720457 PMCID: PMC5883189 DOI: 10.1016/j.pvr.2017.01.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/09/2016] [Accepted: 01/30/2017] [Indexed: 12/17/2022]
Abstract
Background Ethnic variations in the (sero)prevalence of Human Papillomavirus (HPV) and HPV related diseases have been observed previously. We explored if high-risk HPV (hrHPV) seropositivity indeed differs among 6 ethnic groups in Amsterdam the Netherlands and assessed if hrHPV seroprevalence is higher among women than men within each ethnic group, both after adjustment for confounders. Methods From the multi-ethnic HEalthy Life In an Urban Setting (HELIUS) study in Amsterdam (the Netherlands) we randomly selected 4637 men and women aged 18–44 years with a Dutch, South-Asian Surinamese, African Surinamese, Ghanaian, Moroccan, or Turkish ethnicity. Blood samples were tested for HPV-16,−18,−31,−33,−45,−52, and −58 antibodies using a validated Luminex-based multiplex serology assay. We assessed the association of both ethnicity and gender with hrHPV seropositivity using logistic regression models with generalised estimating equations. Results The hrHPV seroprevalence in Dutch, South-Asian Surinamese, African Surinamese, Ghanaian, Moroccan, and Turkish participants was 18%, 12%, 23%, 19%, 17%, and 15% in men, and 30%, 22%, 34%, 31%, 14%, and 15% in women, respectively. HrHPV seroprevalence of non-Dutch men did not differ significantly from Dutch men. HrHPV seroprevalence was significantly higher among African Surinamese women, and significantly lower among Moroccan and Turkish women when compared to Dutch women. These differences were not significant anymore after adjustment for demographic, health, and sexual behavioural differences between ethnicities. HrHPV seroprevalence varied by age, age of sexual debut, and lifetime sexual partners among women but not among men. Seroprevalence of hrHPV was higher among women than among men, except in the Turkish group. Conclusion Among women hrHPV seroprevalence differed by ethnicity, yet among men no pronounced differences were observed across ethnicities. Women have a higher hrHPV seroprevalence than men, except in the Turkish group. Seroprevalence of hrHPV varies by ethnicity among women in Amsterdam. Among men no pronounced differences in hrHPV seroprevalence by ethnicity are observed. Differences by ethnicity in women are attributable to differences in sexual behaviour. HPV serology is not a useful indicator of sexual exposure among heterosexual men.
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Affiliation(s)
- C J Alberts
- Department of Infectious Diseases Research and Prevention, Public Health Service (GGD) of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, Division of Infectious Diseases, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center (AMC), Amsterdam, The Netherlands.
| | - A Michel
- Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - S Bruisten
- Department of Infectious Diseases Research and Prevention, Public Health Service (GGD) of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, Division of Infectious Diseases, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center (AMC), Amsterdam, The Netherlands.
| | - M B Snijder
- Department of Public Health, Academic Medical Center (AMC), Amsterdam, The Netherlands.
| | - M Prins
- Department of Infectious Diseases Research and Prevention, Public Health Service (GGD) of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, Division of Infectious Diseases, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center (AMC), Amsterdam, The Netherlands.
| | - T Waterboer
- Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - M F Schim van der Loeff
- Department of Infectious Diseases Research and Prevention, Public Health Service (GGD) of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, Division of Infectious Diseases, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center (AMC), Amsterdam, The Netherlands.
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Poncet D, Bocqueraz F, Moalic R, Mollier S, Michel A. Hypnoanalgésie pour la mise en place d’une bandelette sous-urétrale. Étude préliminaire : à propos de 8 patientes. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.172] [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: 11/29/2022]
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Legac E, Chastang C, Binet JL, Michel A, Debre P, Merle-Beral H. Proposals for a Phenotypic Classification of B-Chronic Lymphocytic Leukemia, Relationship with Prognostic Factors. Leuk Lymphoma 2016; 5 Suppl 1:53-8. [PMID: 27463480 DOI: 10.3109/10428199109103379] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Immunophenotypic analysis was performed in 53 cases of B chronic lymphocytic leukemia using a large panel of monoclonal antibodies recognizing B, T, activation and myeloid antigens. Our results showed four patterns of reactivity: (a) several molecules were constantly expressed: CD19, CD20, CD24, CD37, HLA-DR, mu heavy chain, CD5, CD23, B5, CD32; (b) one antigen, CD11b, was found in 50 to 80% of the cases; (c) some markers were detected in less than 50% of the cases: CD25, CD38, CD71, CD11a, c, CD14b-c; (d) CD2 and CD16 were never detected. From these results, a phenotypic classification in three groups has been proposed and these groups were correlated with the progression of the disease, mainly with the lymphocyte doubling time of less than one year. We hypothesized that the leukemia cells could be at various stages of differentiation and/or activation according to their expression of activation and myeloid markers.
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Affiliation(s)
- E Legac
- a Laboratoire d'Immunologie Cellulaire et Tissulaire, Paris, France
| | - C Chastang
- b Hôpital Pitié-Salpétrière, Département de Biostatistique et Informatique Médicale, Paris, France
| | - J L Binet
- c Hôpital Saint-Louis, Département d'Hématologie, Paris, France
| | - A Michel
- c Hôpital Saint-Louis, Département d'Hématologie, Paris, France
| | - P Debre
- a Laboratoire d'Immunologie Cellulaire et Tissulaire, Paris, France
| | - H Merle-Beral
- c Hôpital Saint-Louis, Département d'Hématologie, Paris, France
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Abstract
Historical evidence of tuberculosis (TB) affecting primarily captive rhinoceroses dates back almost two centuries. Although the causative Mycobacterium tuberculosis complex (MTC) species has not been determined in many cases, especially for those that occurred before bacterial culture techniques were available, the spectrum of documented reports illustrates the importance of TB as cause of morbidity and mortality in different rhinoceros species across continents. In more recent years, sporadic suspected or confirmed cases of TB caused by Mycobacterium bovis (M. bovis) have been reported in semi-free or free-ranging rhinoceroses in South Africa. However, the true risk TB may pose to the health and conservation of rhinoceros populations in the country's large conservation areas where M. bovis is endemic, which is unknown. Underlying the current knowledge gap is the lack of diagnostic tools available to detect infection in living animals. As documented in other wildlife species, TB could establish itself in a rhinoceros population but remain unrecognized for decades with detrimental implications for wildlife conservation at large and should such animals be moved to uninfected areas or facilities. This paper reviews the current state of knowledge regarding TB in rhinoceros including critical gaps that need to be addressed to effectively assess the threat that this disease may present to rhinoceros.
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Affiliation(s)
- M Miller
- DST/NRF Centre of Excellence for Biomedical TB Research/MRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - A Michel
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
| | - P van Helden
- DST/NRF Centre of Excellence for Biomedical TB Research/MRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - P Buss
- Veterinary Wildlife Services, South African National Parks, Kruger National Park, Skukuza, South Africa
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Colin JJ, Diot Y, Guerin P, Lamongie B, Berneau F, Michel A, Jaouen C, Abadias G. A load-lock compatible system for in situ electrical resistivity measurements during thin film growth. Rev Sci Instrum 2016; 87:023902. [PMID: 26931861 DOI: 10.1063/1.4940933] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An experimental setup designed for in situ electrical resistance measurement during thin film growth is described. The custom-built sample holder with a four-point probe arrangement can be loaded into a high-vacuum magnetron sputter-deposition chamber through a load-lock transfer system, allowing measurements on series of samples without venting the main chamber. Electrical contact is ensured with circular copper tracks inserted in a Teflon plate on a mounting holder station inside the deposition chamber. This configuration creates the possibility to measure thickness-dependent electrical resistance changes with sub-monolayer resolution and is compatible with use of sample rotation during growth. Examples are presented for metallic films with high adatom mobility growing in a Volmer-Weber mode (Ag and Pd) as well as for refractory metal (Mo) with low adatom mobility. Evidence for an amorphous-to-crystalline phase transition at a film thickness of 2.6 nm is reported during growth of Mo on an amorphous Si underlayer, supporting previous findings based on in situ wafer curvature measurements.
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Affiliation(s)
- J J Colin
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - Y Diot
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - Ph Guerin
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - B Lamongie
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - F Berneau
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - A Michel
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - C Jaouen
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
| | - G Abadias
- Département Physique et Mécanique des Matériaux, Institut Pprime, UPR 3346, CNRS-Université de Poitiers, SP2MI Téléport 2, F86962 Chasseneuil-Futuroscope Cedex, France
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Stewart S, Robertson AE, Wickramasinghe D, Draper MA, Michel A, Dorrance AE. Population Structure Among and Within Iowa, Missouri, Ohio, and South Dakota Populations of Phytophthora sojae. Plant Dis 2016; 100:367-379. [PMID: 30694137 DOI: 10.1094/pdis-04-15-0437-re] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phytophthora root and stem rot, caused by Phytophthora sojae, is an economically important disease of soybean throughout the Midwestern United States. This disease has been successfully managed with resistance (Rps) genes; however, pathogen populations throughout the Midwest have developed virulence to many Rps genes, including those that have not been deployed. To gain a better understanding of the processes that influence P. sojae evolution, the population genetic structure was compared among populations using one isolate collected from 17, 33, and 20 fields in Iowa, Ohio, and South Dakota, respectively, as well as multiple isolates from individual fields in Iowa, Ohio, and Missouri. Genotypic diversity was measured using 21 polymorphic microsatellite (simple-sequence repeat) markers. and pathotype diversity using 15 soybean differentials. For all but three of the populations with low sample size, there was a high level of pathotype diversity and a low to moderate level of genotypic diversity among the populations for both comparisons between states and within-field variation. None of the Rps-gene differentials were resistant to all of the isolates. There were 103 unique multilocus genotypes identified in this study and only 2 were identified from the same field. Although no clones were identified in more than one field, pairwise FST indicated that some gene flow within neighboring fields does occur but not across the region, including fields from neighboring states. These results suggest that there is a strong probability that each state may have their own or several regional populations, as well as provide further evidence of high diversity within this homothallic pathogen which may be due, in part, to limited gene flow, mutation, or outcrossing, and this likely affects the success of deployment of resistance.
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Affiliation(s)
- S Stewart
- Department Plant Pathology and Microbiology, Iowa State University, Ames 50011
| | - A E Robertson
- Department Plant Pathology and Microbiology, Iowa State University, Ames 50011
| | - D Wickramasinghe
- Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center (OARDC), Wooster 44691
| | - M A Draper
- Plant Science Department, South Dakota State University, Brookings 57007-1090
| | | | - A E Dorrance
- Department of Plant Pathology, The Ohio State University, OARDC
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Marmolino D, Foerch P, Atienzar FA, Staelens L, Michel A, Scheller D. Alpha synuclein dimers and oligomers are increased in overexpressing conditions in vitro and in vivo. Mol Cell Neurosci 2015; 71:92-101. [PMID: 26711807 DOI: 10.1016/j.mcn.2015.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 12/03/2015] [Accepted: 12/16/2015] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease is characterized by degeneration of dopaminergic neurons in the substantia nigra pars compacta along with the formation of intracellular fibrillar inclusions (Lewy bodies and Lewy neuritis), which are mainly composed of aggregated α-synuclein (ASYN). This latter is a 14 kDa protein that localizes to synaptic vesicles in nerve terminals and promotes soluble N-ethylmaleimide-sensitive factor attachment protein receptor complex assembly. We explored the monomeric and oligomeric state of ASYN in vitro in HEK293s and SH-SY5Y cell lines. In addition rats were injected in the substantia nigra with an Adeno associated virus carrying the human A53T mutation of ASYN (in vivo experiments). We show that human wild type ASYN as well as PD-linked mutations (A30P, E46K and A53T) in overexpressing conditions mostly exists in a monomeric state in equilibrium with dimeric forms. The monomer/dimer ratio is unaffected by PD-linked mutation. Furthermore, the A30P, E46K and A53T mutations overexpression strongly increased cell death compared to wild type ASYN. Taken together, our data suggest that ASYN dimers amount do not directly correlate to reduced cellular viability, suggesting a different role in protein function and induced pathology. Our data suggest that early ASYN neuro-pathogenic effects are probably mediated by other molecular processes than increased oligomerization alone.
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Affiliation(s)
- D Marmolino
- UCB Biopharma S.P.R.L., Neuroscience TA, Chemin du Foriest B-1420 Braine l'Alleud, Belgium.
| | - P Foerch
- UCB Biopharma S.P.R.L., Molecular Biology & Gene Expression, Discovery Research, Chemin du Foriest B-1420 Braine l'Alleud, Belgium
| | - F A Atienzar
- UCB Biopharma S.P.R.L., Non-Clinical Development, Chemin du Foriest B-1420 Braine l'Alleud, Belgium
| | - L Staelens
- UCB Biopharma S.P.R.L., Neuroscience TA, Chemin du Foriest B-1420 Braine l'Alleud, Belgium
| | - A Michel
- UCB Biopharma S.P.R.L., Neuroscience TA, Chemin du Foriest B-1420 Braine l'Alleud, Belgium
| | - D Scheller
- UCB Biopharma S.P.R.L., Neuroscience TA, Chemin du Foriest B-1420 Braine l'Alleud, Belgium
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Boss R, Cosandey A, Luini M, Artursson K, Bardiau M, Breitenwieser F, Hehenberger E, Lam T, Mansfeld M, Michel A, Mösslacher G, Naskova J, Nelson S, Podpečan O, Raemy A, Ryan E, Salat O, Zangerl P, Steiner A, Graber HU. Bovine Staphylococcus aureus: Subtyping, evolution, and zoonotic transfer. J Dairy Sci 2015; 99:515-28. [PMID: 26601578 DOI: 10.3168/jds.2015-9589] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [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: 03/18/2015] [Accepted: 08/27/2015] [Indexed: 11/19/2022]
Abstract
Staphylococcus aureus is globally one of the most important pathogens causing contagious mastitis in cattle. Previous studies using ribosomal spacer (RS)-PCR, however, demonstrated in Swiss cows that Staph. aureus isolated from bovine intramammary infections are genetically heterogeneous, with Staph. aureus genotype B (GTB) and GTC being the most prominent genotypes. Furthermore, Staph. aureus GTB was found to be contagious, whereas Staph. aureus GTC and all the remaining genotypes were involved in individual cow disease. In addition to RS-PCR, other methods for subtyping Staph. aureus are known, including spa typing and multilocus sequence typing (MLST). They are based on sequencing the spa and various housekeeping genes, respectively. The aim of the present study was to compare the 3 analytic methods using 456 strains of Staph. aureus isolated from milk of bovine intramammary infections and bulk tanks obtained from 12 European countries. Furthermore, the phylogeny of animal Staph. aureus was inferred and the zoonotic transfer of Staph. aureus between cattle and humans was studied. The analyzed strains could be grouped into 6 genotypic clusters, with CLB, CLC, and CLR being the most prominent ones. Comparing the 3 subtyping methods, RS-PCR showed the highest resolution, followed by spa typing and MLST. We found associations among the methods but in many cases they were unsatisfactory except for CLB and CLC. Cluster CLB was positive for clonal complex (CC)8 in 99% of the cases and typically positive for t2953; it is the cattle-adapted form of CC8. Cluster CLC was always positive for tbl 2645 and typically positive for CC705. For CLR and the remaining subtypes, links among the 3 methods were generally poor. Bovine Staph. aureus is highly clonal and a few clones predominate. Animal Staph. aureus always evolve from human strains, such that every human strain may be the ancestor of a novel animal-adapted strain. The zoonotic transfer of IMI- and milk-associated strains of Staph. aureus between cattle and humans seems to be very limited and different hosts are not considered as a source for mutual, spontaneous infections. Spillover events, however, may happen.
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Affiliation(s)
- R Boss
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland
| | - A Cosandey
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland; Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, P.O. Box 8466, 3001 Berne, Switzerland
| | - M Luini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Via Einstein, 26900 Lodi, Italy
| | - K Artursson
- Department of Bacteriology, National Veterinary Institute, SE-751 89 Uppsala, Sweden
| | - M Bardiau
- Bacteriology, Department of Infectious Diseases, Faculty of Veterinary Medicine, University of Liège, Avenue de Cureghem 6, 4000 Liège, Belgium
| | - F Breitenwieser
- Milchprüfring Baden-Württemberg e. V., Marie-Curie-Strasse 19, 73230 Kirchheim/Teck, Germany
| | - E Hehenberger
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, P.O. Box 8466, 3001 Berne, Switzerland
| | - Th Lam
- GD Animal Health, Arnsbergstraat 7, PO Box 9, 7400 AA Deventer, the Netherlands
| | - M Mansfeld
- Carinthian Institute for Veterinary Disease Control, Kirchengasse 43, 9020 Klagenfurt, Austria
| | - A Michel
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, P.O. Box 8466, 3001 Berne, Switzerland
| | - G Mösslacher
- Animal Health Organisation Upper Austria, Bahnhofplatz 1, 4021 Linz, Austria
| | - J Naskova
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland
| | - S Nelson
- Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, Ullevalsvn 72, PO Box 8146 Dep, N-0033 Oslo, Norway
| | - O Podpečan
- Ambulatory Clinic for Large Animals, University of Ljubljana, Veterinary Faculty, Gerbičeva ul. 60, 1000 Ljubljana, Slovenia
| | - A Raemy
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, P.O. Box 8466, 3001 Berne, Switzerland
| | - E Ryan
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - O Salat
- Veterinary Clinic of Haute Auvergne, Allauzier, 15100 Saint Flour, France
| | - P Zangerl
- Federal Institute for Alpine Dairying BAM, 6200 Jenbach, Austria
| | - A Steiner
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, P.O. Box 8466, 3001 Berne, Switzerland
| | - H U Graber
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland.
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Cosandey A, Boss R, Luini M, Artursson K, Bardiau M, Breitenwieser F, Hehenberger E, Lam T, Mansfeld M, Michel A, Mösslacher G, Naskova J, Nelson S, Podpečan O, Raemy A, Ryan E, Salat O, Zangerl P, Steiner A, Graber HU. Staphylococcus aureus genotype B and other genotypes isolated from cow milk in European countries. J Dairy Sci 2015; 99:529-40. [PMID: 26585469 DOI: 10.3168/jds.2015-9587] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [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: 03/18/2015] [Accepted: 09/14/2015] [Indexed: 11/19/2022]
Abstract
Staphylococcus aureus is globally one of the most important pathogens causing contagious mastitis in cattle. Previous studies, however, have demonstrated in Swiss cows that Staph. aureus isolated from bovine intramammary infection is genetically heterogeneous, with Staph. aureus genotype B (GTB) and GTC being the most prominent genotypes. In addition, Staph. aureus GTB was found to be contagious, whereas Staph. aureus GTC and all the remaining genotypes were involved in individual cow disease. The aim of this study was to subtype strains of Staph. aureus isolated from bovine mastitic milk and bulk tank milk to obtain a unified view of the presence of bovine staphylococcal subtypes in 12 European countries. A total of 456 strains of Staph. aureus were subjected to different typing methods: ribosomal spacer PCR, detection of enterotoxin genes, and detection of gene polymorphisms (lukE, coa). Major genotypes with their variants were combined into genotypic clusters (CL). This study revealed 5 major CL representing 76% of all strains and comprised CLB, CLC, CLF, CLI, and CLR. The clusters were characterized by the same genetic properties as the Swiss isolates, demonstrating high clonality of bovine Staph. aureus. Interestingly, CLB was situated in central Europe whereas the other CL were widely disseminated. The remaining 24% of the strains comprised 41 genotypes and variants, some of which (GTAM, GTBG) were restricted to certain countries; many others, however, were observed only once.
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Affiliation(s)
- A Cosandey
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland; Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, PO Box 8466, 3001 Berne, Switzerland
| | - R Boss
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland
| | - M Luini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Via Einstein, 26900 Lodi, Italy
| | - K Artursson
- Department of Bacteriology, National Veterinary Institute, SE-751 89 Uppsala, Sweden
| | - M Bardiau
- Bacteriology, Department of Infectious Diseases, Faculty of Veterinary Medicine, University of Liège, Avenue de Cureghem 6, 4000 Liège, Belgium
| | - F Breitenwieser
- Milchprüfring Baden-Württemberg e. V., Marie-Curie-Strasse 19, 73230 Kirchheim/Teck, Germany
| | - E Hehenberger
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, PO Box 8466, 3001 Berne, Switzerland
| | - Th Lam
- GD Animal Health, Arnsbergstraat 7, PO Box 9, 7400 AA Deventer, the Netherlands
| | - M Mansfeld
- Carinthian Institute for Veterinary Disease Control, Kirchengasse 43, 9020 Klagenfurt, Austria
| | - A Michel
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, PO Box 8466, 3001 Berne, Switzerland
| | - G Mösslacher
- Animal Health Organisation Upper Austria, Bahnhofplatz 1, 4021 Linz, Austria
| | - J Naskova
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland
| | - S Nelson
- Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, Ullevalsvn 72, PO Box 8146 Dep, N-0033 Oslo, Norway
| | - O Podpečan
- Ambulatory Clinic for Large Animals, University of Ljubljana, Veterinary Faculty, Gerbičeva ul. 60, 1000 Ljubljana, Slovenia
| | - A Raemy
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, PO Box 8466, 3001 Berne, Switzerland
| | - E Ryan
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - O Salat
- Veterinary Clinic of Haute Auvergne, Allauzier, 15100 Saint Flour, France
| | - P Zangerl
- Federal Institute for Alpine Dairying BAM, 6200 Jenbach, Austria
| | - A Steiner
- Clinic for Ruminants, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Berne, Bremgartenstrasse 109a, PO Box 8466, 3001 Berne, Switzerland
| | - H U Graber
- Agroscope, Institute for Food Sciences (IFS), Schwarzenburgstrasse 161, 3003 Berne, Switzerland.
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Michel A, Pladys A, Bayat S, Couchoud C, Vigneau C. État des lieux des patients dialysés en urgence en 2012 : quelle évolution depuis 2006 ? Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.006] [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]
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Martel-Laferrière V, Michel A, Schaefer S, Bindal S, Bichoupan K, Branch AD, Huprikar S, Schiano TD, Perumalswami PV. Clinical characteristics of human immunodeficiency virus patients being referred for liver transplant evaluation: a descriptive cohort study. Transpl Infect Dis 2015; 17:527-35. [PMID: 25929731 DOI: 10.1111/tid.12395] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/05/2015] [Indexed: 01/26/2023]
Abstract
BACKGROUND Liver transplantation (LT) is a treatment option for select human immunodeficiency virus (HIV)-infected patients with advanced liver disease. The aim of this study was to describe LT evaluation outcomes in HIV-infected patients. METHODS All HIV-infected patients referred for their first LT evaluation at the Mount Sinai Medical Center were included in this retrospective, descriptive cohort study. Multivariable logistic regression was used to identify factors independently associated with listing. RESULTS Between February 2000 and April 2012, 366 patients were evaluated for LT, with 66 (18.0%) listed for LT and 300 (82.0%) not listed. Fifty-one patients (13.9%) died before completing evaluation and 85 (23.2%) were too early for listing. Reasons patients were declined for listing were psychosocial (15.8%), HIV-related (10.4%), loss to follow-up (9.6%), surgical/medical (6.0%), liver-related (4.4%), patient choice (3.4%), and financial (1.6%). Listed patients were more likely to have hepatocellular carcinoma (HCC) (43.1% vs. 17.1%; P < 0.0001) and less likely to have hepatitis B (6.2% vs. 15.7%; P = 0.04) or a psychiatric history (19.7% vs. 35.2%; P = 0.02) than those not listed. In multivariable analysis, HCC (odds ratio [OR] 5.79; 95% confidence interval [95% CI]: 2.97-11.28), model for end-stage liver disease (MELD) score at referral (OR 1.06; 95% CI 1.01-1.11), and hepatitis B (OR 0.26; 95% CI 0.08-0.79) were associated with listing. CONCLUSION MELD score and HCC were positive predictors of listing in HIV-infected patients referred for LT evaluation and, therefore, timely referrals are vital in these patients. As MELD is a predictor for death while undergoing evaluation, rapid evaluation should be performed in HIV-infected patients with a higher MELD score.
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Affiliation(s)
- V Martel-Laferrière
- Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montréal, Quebec, Canada
| | - A Michel
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - S Schaefer
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - S Bindal
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - K Bichoupan
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - A D Branch
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - S Huprikar
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - T D Schiano
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - P V Perumalswami
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Allart-Vorelli P, Porro B, Baguet F, Michel A, Cousson-Gélie F. Haematological cancer and quality of life: a systematic literature review. Blood Cancer J 2015; 5:e305. [PMID: 25909835 PMCID: PMC4450328 DOI: 10.1038/bcj.2015.29] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 02/02/2015] [Indexed: 11/11/2022] Open
Abstract
The aim of this study is to examine the impact of haematological cancers on quality of life (QoL). A review of the international literature was conducted from the databases ‘PsycInfo' and 'Medline' using the keywords: 'haematological cancer', 'quality of life', 'physical', 'psychological', 'social', 'vocational', 'professional', 'economic', 'cognitive', and 'sexual'. Twenty-one reliable studies were analysed. Among these studies, 12 showed that haematological cancer altered overall QoL, 8 papers found a deterioration of physical dimension, 8 papers reported on functional and role dimensions, 11 papers reported on the psychological component and 9 on the social component. Moreover, one study and two manuscripts, respectively, reported deteriorated sexual and cognitive dimensions. Our review demonstrates that the different dimensions of QoL are deteriorated by haematological malignancies and, probably, by the side effects of treatment.
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Affiliation(s)
- P Allart-Vorelli
- Laboratory of Psychology 'Health and Quality of Life' EA 4139, University Bordeaux Segalen, Bordeaux, France
| | - B Porro
- Department of Psychology, Epsylon EA 4556 Laboratory 'Dynamics of Human Abilities and Health Behaviors', University Paul Valéry Montpellier 3, Montpellier, France
| | - F Baguet
- 1] Department of Psychology, Epsylon EA 4556 Laboratory 'Dynamics of Human Abilities and Health Behaviors', University Paul Valéry Montpellier 3, Montpellier, France [2] ICM, Institut Régional du Cancer de Montpellier, Epidaure Prevention Unit - Rue des Apothicaires, Montpellier Cedex 5, France
| | - A Michel
- 1] Department of Psychology, Epsylon EA 4556 Laboratory 'Dynamics of Human Abilities and Health Behaviors', University Paul Valéry Montpellier 3, Montpellier, France [2] MIS, Montpellier Institut du Sein - 25 rue de Clémentville, Montpellier, France
| | - F Cousson-Gélie
- 1] Department of Psychology, Epsylon EA 4556 Laboratory 'Dynamics of Human Abilities and Health Behaviors', University Paul Valéry Montpellier 3, Montpellier, France [2] ICM, Institut Régional du Cancer de Montpellier, Epidaure Prevention Unit - Rue des Apothicaires, Montpellier Cedex 5, France
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Tang Y, Choi J, Kim D, Tudtud-Hans L, Li J, Michel A, Baek H, Hurlow A, Wang C, Nguyen HB. Clinical predictors of adverse outcome in severe sepsis patients with lactate 2-4 mM admitted to the hospital. QJM 2015; 108:279-87. [PMID: 25193540 DOI: 10.1093/qjmed/hcu186] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Severe sepsis patients with initial lactate level 2-4 mM are commonly considered to have lower risk for mortality and adverse outcomes. AIM We aim to determine clinical variables that are associated with adverse outcome in these patients. DESIGN A retrospective cohort study. METHODS Severe sepsis patients with initial lactate ≥ 2 and < 4 mM admitted to our hospital were examined for any of the following primary outcomes: (i) in-hospital death, (ii) vasopressor requirement, (iii) use of mechanical ventilator, (iv) lactate ≥ 4.0 mM or (v) need care in the intensive care unit (ICU) within 48 h. RESULTS Five-hundred and thirty-five patients were enrolled, age 58.7 ± 19.3 years, 53.2% male. The most common sources of infection were urinary tract infection and pneumonia, 38.3 and 35.7%, respectively. One-hundred and twenty-four (23.2%) patients had at least one primary adverse outcome within 48 h, including in-hospital death 1.1%, vasopressor requirement 12.9%, use of mechanical ventilator 13.3%, increase lactate ≥ 4.0 mM in 5.6% patients and 21.5% of patients requiring ICU (including 13.8% of the patients admitted directly to ICU from the emergency department, and 7.7% initially admitted to the general medical ward but later required ICU transfer). Altered mentation, hypotension, tachypnea and elevated blood urea nitrogen at admission were associated with the primary outcome in multivariable logistic regression analysis, odds ratio 2.50 (95% confidence interval: 1.54, 4.06), 3.76 (2.31, 6.10), 1.97 (1.22, 3.17) and 1.78 (1.11, 2.83), respectively. CONCLUSIONS Our study suggests that clinicians should be cautious about the potential adverse outcomes in severe sepsis patients with initial lactate level between 2 and 4 mM and a presentation of altered mentation, hypotension, tachypnea and/or elevated blood urea nitrogen.
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Affiliation(s)
- Y Tang
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - J Choi
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - D Kim
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - L Tudtud-Hans
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - J Li
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - A Michel
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - H Baek
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - A Hurlow
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - C Wang
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
| | - H B Nguyen
- From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA From the Department of Medicine, Hospitalist Medicine, School of Medicine, Department of Emergency Medicine and Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA
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Sierau S, Resch L, Michel A, Horlich J, Dehmel S, Tsapos N, Binser M, Kurz-Adam M, White L. Definition und Beschreibung von Vernachlässigung im Kindes- und Jugendalter. Monatsschr Kinderheilkd 2014. [DOI: 10.1007/s00112-014-3143-4] [Citation(s) in RCA: 5] [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] [Indexed: 11/29/2022]
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Jori F, Mokospasetso M, Etter E, Munstermann S, Newman SH, Michel A. Preliminary assessment of bovine tuberculosis at the livestock/wildlife interface in two protected areas of northern Botswana. Transbound Emerg Dis 2014; 60 Suppl 1:28-36. [PMID: 24171846 DOI: 10.1111/tbed.12110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 04/05/2013] [Indexed: 11/29/2022]
Abstract
Protected areas of northern Botswana such as the Okavango Delta (OD) or Chobe National Park (CNP) are well-known hot spots for the conservation of African wildlife. However, their infection status regarding bovine tuberculosis (BTB) at the domestic/wildlife interface has never been investigated. To provide preliminary baseline data on the circulation of Mycobacterium bovis in those sites, we performed a cross-sectional survey on 130 buffalo in both protected areas (60 individuals from CNP and 70 from OD) and 818 cattle in their surrounding communal lands (369 in CNP and 449 in the OD). Whole-blood samples were tested using a commercial interferon-gamma assay (IFN-γ) with modifications. The apparent BTB prevalence in buffalo was nil in CNP and 0.7% 95% CI [0.2-1.9] in the OD, while the apparent BTB prevalence in cattle was 0.7% 95% CI [0.2-2.1] in the OD and 2.4% 95% CI [1.2-4.7] in CNP. True prevalence values calculated on the basis of the locally applicable IFN-γ test performance suggested that BTB prevalence was nil in both buffalo populations and in cattle from the OD interface, but reached 2.3% 95% CI [0.2-4.5] in cattle populations around CNP. The results of a questionnaire survey conducted among a sample of farmers living in the communities adjacent to each conservation area (97 and 38 persons in the OD and CNP, respectively) suggested a higher risk of the circulation of M. bovis at the wildlife/livestock interface of the CNP than at that of the OD. However, further comprehensive studies are needed to confirm the circulation of M. bovis and to monitor the inter-species and transboundary transmission of BTB in northern Botswana.
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Affiliation(s)
- F Jori
- AGIRs Research Unit, CIRAD, Montpellier, France; Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
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Gcebe N, Rutten V, Gey van Pittius NC, Michel A. Prevalence and distribution of non-tuberculous mycobacteria (NTM) in cattle, African buffaloes (Syncerus caffer) and their environments in South Africa. Transbound Emerg Dis 2014; 60 Suppl 1:74-84. [PMID: 24171852 DOI: 10.1111/tbed.12133] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [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: 07/06/2013] [Indexed: 11/29/2022]
Abstract
It has been hypothesized that a variety of non-tuberculous mycobacteria (NTM) species to which livestock and wildlife species are naturally exposed induce broadly cross-reactive anti-mycobacterial immune responses which interfere with current standard diagnostic assays. Non-tuberculous mycobacteria have also been implicated in Mycobacterium bovis-specific immune responsiveness, hence potentially the development of tuberculosis. Cattle and African buffaloes are both maintenance hosts of bovine tuberculosis (BTB) in South Africa, yet the effective diagnosis and control in these species may be hampered by adverse effects of NTM. As part of an investigation of the role of NTM in the immune responsiveness of cattle and African buffaloes to NTM, we conducted a countrywide survey to establish the prevalent NTM species and their distribution in the natural environments of these animals. A total of 1123 samples (water, soil, nasal and pharyngeal swabs) were collected for mycobacterium isolation. In addition, NTM isolated from tissue samples between 1991 and 2011 were included in the analysis. Mycobacteria were isolated from 56% of the samples from the countrywide survey. A total of 420 NTM isolates from soil, water, animal tissues and animal-derived swab samples were genotyped with the following results: 302 belonged to 40 known NTM species, 79 were found to be closely related to 23 known NTM species, and 38 isolates were found to be potentially novel species that are not currently listed in the RIDOM and NCBI BLAST databases. The four NTM species or closely related groups most frequently isolated in this survey included Mycobacterium terrae (11.2% of isolates), a group of mycobacteria closely related to Mycobacterium moriokaense (referred to as M. moriokaense-like) (8.1% of isolates), Mycobacterium nonchromogenicum (7.4% of isolates) and Mycobacterium vaccae/M. vanbaalenii (5.2% of isolates). The phylogenetic analysis of the M. moriokaense-like isolates, based on the 16S rRNA sequences, revealed at least eight clusters, possibly associated with eight different NTM species. Our findings provide account of NTM species diversity and associated prevalences in cattle and African buffaloes and their environments in South Africa. The identification of the most prevalent NTM species in this study will allow for a targeted investigation of their effects on host immune responses.
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Affiliation(s)
- N Gcebe
- Tuberculosis Laboratory, Agricultural Research Council - Onderstepoort Veterinary Institute, Onderstepoort, South Africa; Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
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Hlokwe TM, van Helden P, Michel A. Evaluation of the discriminatory power of variable number of tandem repeat typing of Mycobacterium bovis isolates from southern Africa. Transbound Emerg Dis 2014; 60 Suppl 1:111-20. [PMID: 24171856 DOI: 10.1111/tbed.12096] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 12/07/2012] [Indexed: 11/28/2022]
Abstract
The usefulness of variable number tandem repeat (VNTR) typing based on limited numbers of loci has previously proven inferior compared to IS6110-RFLP typing when applied to the study of the molecular epidemiology of bovine tuberculosis (BTB) in both livestock and wildlife in southern Africa. In this study, the discriminatory power of 29 published VNTR loci in the characterization of 131 Mycobacterium bovis strains isolated predominantly from wildlife and a smaller number from livestock in southern Africa was assessed. Allelic diversities calculated when loci were evaluated on a selected panel of 23 M. bovis isolates with identified varying degrees of genetic relatedness from different geographic origins as well as M. bovis BCG ranged from 0.00 to 0.63. Of the 29 loci tested, 13 were polymorphic (QUB 11a, QUB 11b, QUB 18, ETR-B and -C, Mtub 21, MIRU 16 and 26, ETR-E, QUB 26, MIRU 23, ETR-A, and Mtub 12). In addition, a comparative evaluation of the 13 loci on a panel of 65 isolates previously characterized by IS6110 restriction fragment length polymorphism (RFLP) typing and further evaluation on 41 isolates with no typing history from Kruger National Park (KNP) highlighted that M. bovis from epidemiologically unrelated cases of BTB in different geographic regions can be adequately distinguished. However, there is a need for improvement of the method to fully discriminate between the parental KNP strain and its clones to allow the detection of evolutionary events causing transmission between and within wildlife species.
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Affiliation(s)
- T M Hlokwe
- Tuberculosis Laboratory, Zoonotic Diseases Section, ARC-Onderstepoort Veterinary Institute, Onderstepoort, South Africa
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Stachon P, Peikert A, Michel A, Wolf D, Hoppe N, Dufner B, Bode C, Idzko M, Zirlik A. 530Extracellular ATP induces atherosclerosis and vascular inflammation via purinergic receptor 2 (P2Y2) in mice. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu093.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Bei elektrischer Anregung von Ammoniak unter Drucken bis zu 1 atm wurden im Bereich von 5200 bis 8500 A zwei neue, als „C“- und „D-Spektrum“ bezeichnete Bandensysteme beobachtet. Beide Spektren wurden sowohl im NH3 als auch im ND3 untersucht. Die Isotopieverschiebung ist groß. Für das C-Spektrum deuten die beobachteten Schwingungen auf einen Träger hin, der neben einem oder mehreren H-Atomen mindestens 2 N-Atome enthält.
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Affiliation(s)
- H. Schüler
- Forschungsstelle für Spektroskopie in der Max-Planck-Gesellschaft, Hechingen
| | - A. Michel
- Forschungsstelle für Spektroskopie in der Max-Planck-Gesellschaft, Hechingen
| | - A. E. Grün
- Hochspannungslaboratorium Hechingen, Abteilung des Max-Planck-Instituts für Physik der Stratosphäre
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Abstract
Das in einer Entladung durch strömenden Wasserdampf zwischen 2248 und 2600 Å von SCHÜLER und MICHEL 1 (siehe auch BÉNOIST 3) beobachtete Spektrum wurde mit größerer Dispersion photographiert, neu analysiert und dem Übergang C2 Σ+ → A2 Σ+ von OH zugeordnet. Der C2 Σ+-Term führt zu den Dissoziationsprodukten O- (2Puu) und H+(1Sg). Da allein das nullte und erste Schwingungsniveau beobachtet werden, lassen sich die Gleichgewichtskonstanten teilweise nur abschätzen.
Für C2Σ+ von OH ergibt sich:
Te ≈ 90 105 cm—1,
ωe = 0,167 cm—1,
ωe ≈ 2 339 cm—1,
re = 2,166 Å,
ωe xe≈ 32 cm-1,
De 45 093 cm—1 (5,589 eV),
Be = 4,207 cm—1,
D0 = 43 931 cm—1 (5,445 eV).
Ein im SCHUMANN-Gebiet zwischen 1700 und 1900 A liegendes neues Emissionsspektrum wird kurz diskutiert.
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Affiliation(s)
- A. Michel
- Aus der Forschungsstelle für Spektroskopie in der Max-Planck-Gesellschaft, Hechingen
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