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Lersch F, Zingg TJG, Knapp J, Stüber F, Hight D, Kaiser HA. [Processed EEG for personalized dosing of anesthetics during general anesthesia]. Anaesthesiologie 2023; 72:662-676. [PMID: 37552241 PMCID: PMC10457248 DOI: 10.1007/s00101-023-01313-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/26/2023] [Indexed: 08/09/2023]
Abstract
Electroencephalogram (EEG)-guided anesthesia is indispensable in modern operating rooms and has become established as the standard form of monitoring. Many anesthesiologists rely on processed EEG indices in the hope of averting anesthesia-related complications, such as intraoperative awareness, postoperative delirium and other cognitive complications in their patients. This educational review aims to provide information on the five most prevalent monitors used to guide depth of sedation during general anesthesia. This article elucidates the principles underpinning the application of these monitors where known, which are generally based on power in various EEG frequency bands and on the burst suppression pattern. Convinced that EEG-guided anesthesia has the potential of benefitting many surgical patients, it is felt that many basic principles and shortcomings of processed EEG indices need to be better understood in the clinical practice. After discussing the different monitors and clinically relevant data from the literature, the article gives a short practical guidance on how to critically interpret processed EEG information and troubleshooting of confounded indices in the context of clinical situations.
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Affiliation(s)
- F Lersch
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz
| | - T J G Zingg
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz
| | - J Knapp
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz
| | - F Stüber
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz
| | - D Hight
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz
| | - H A Kaiser
- Universitätsklinik für Anästhesiologie und Schmerzmedizin, Inselspital, Universitätsspital Bern, Universität Bern, Freiburgstrasse, 3010, Bern, Schweiz.
- Zentrum für Anästhesiologie und Intensivmedizin, Hirslanden Klinik Aarau, Hirslanden AG, Schänisweg, 5001, Aarau, Schweiz.
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2
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Knapp J, Levitin LV, Nyéki J, Ho AF, Cowan B, Saunders J, Brando M, Geibel C, Kliemt K, Krellner C. Electronuclear Transition into a Spatially Modulated Magnetic State in YbRh_{2}Si_{2}. Phys Rev Lett 2023; 130:126802. [PMID: 37027856 DOI: 10.1103/physrevlett.130.126802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 02/03/2023] [Indexed: 06/19/2023]
Abstract
The nature of the antiferromagnetic order in the heavy fermion metal YbRh_{2}Si_{2}, its quantum criticality, and superconductivity, which appears at low mK temperatures, remain open questions. We report measurements of the heat capacity over the wide temperature range 180 μK-80 mK, using current sensing noise thermometry. In zero magnetic field we observe a remarkably sharp heat capacity anomaly at 1.5 mK, which we identify as an electronuclear transition into a state with spatially modulated electronic magnetic order of maximum amplitude 0.1 μ_{B}. We also report results of measurements in magnetic fields in the range 0 to 70 mT, applied perpendicular to the c axis, which show eventual suppression of this order. These results demonstrate a coexistence of a large moment antiferromagnet with putative superconductivity.
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Affiliation(s)
- J Knapp
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - L V Levitin
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - J Nyéki
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - A F Ho
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - B Cowan
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - J Saunders
- Department of Physics, Royal Holloway University of London, TW20 0EX, Egham, United Kingdom
| | - M Brando
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - C Geibel
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - K Kliemt
- Physikalisches Institut, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - C Krellner
- Physikalisches Institut, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
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3
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Knapp J, Tavares de Sousa M, Lenz A, Herrmann J, Zhang S, Kording F, Hergert B, Adam G, Bannas P, Schoennagel BP. Fetal 4D flow MRI of the great thoracic vessels at 3 Tesla using Doppler-ultrasound gating: a feasibility study. Eur Radiol 2023; 33:1698-1706. [PMID: 36271920 PMCID: PMC9935734 DOI: 10.1007/s00330-022-09167-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/19/2022] [Accepted: 09/12/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To evaluate the feasibility of Doppler-ultrasound (DUS)-gated 4D flow MRI of the fetal great thoracic vessels at 3T in a clinical setting. METHODS Sixteen consecutive fetuses (range 30+4-38+5 weeks) with (n = 11) and without (n = 5) cardiovascular anomalies underwent 4D flow MRI of the great thoracic vessels at 3T. Direct fetal cardiac gating was obtained using a MR-compatible DUS device. 4D flow MRI-based visualisation and quantification of four target regions (ascending aorta (AAo), descending aorta (DAo), main pulmonary artery (MPA), and ductus arteriosus (DA)) were performed using dedicated software. RESULTS Fetal 4D flow MRI of the great thoracic vessels was successful in 12/16 fetuses (75%) by adopting clinical 4D flow MR protocols in combination with direct fetal cardiac DUS-gating. Four datasets were excluded due to artefacts by fetal movement or maternal breathing. 4D flow MRI-derived time-velocity curves revealed typical arterial blood flow patterns in the aorta. 4D flow quantification was achieved for the pre-defined target regions. Average velocity and flow volume were 21.1 ± 5.2 cm/s and 6.0 ± 3.1 mL/s in the AAo, 24.3 ± 6.7 cm/s and 8.4 ± 3.7 mL/s in the DAo, 21.9 ± 6.4 cm/s and 7.8 ± 4.2 mL/s in the MPA, and 23.4 ± 4.7 cm/s and 5.9 ± 3.6 mL/s in the DA, respectively. CONCLUSIONS Combination of DUS-gating of the fetal heart and 4D flow MRI allows comprehensive visualisation and quantification of haemodynamics in the fetal great thoracic vessels. DUS-gated fetal 4D flow MRI may provide a new diagnostic approach for prenatal assessment of blood flow haemodynamics. KEY POINTS • Fetal cardiac Doppler-ultrasound (DUS) gating and 4D flow MRI can be successfully combined. • DUS-gated fetal 4D flow MRI allowed visualisation and evaluation of streamline directionality, illustration of blood flow variations, and pulsatile arterial waveforms in the target vessels. • 4D flow MRI-based visualisation and quantification of the fetal great thoracic vessels were successful and flow metrics agreed with echocardiographic reference values.
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Affiliation(s)
- J. Knapp
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - M. Tavares de Sousa
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - A. Lenz
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - J. Herrmann
- Section of Pediatric Radiology, Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - S. Zhang
- Philips Healthcare, Röntgenstrasse 24, 22335 Hamburg, Germany
| | - F. Kording
- Northh Medical GmbH, Röntgenstrasse 24, 22335 Hamburg, Germany
| | - B. Hergert
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - G. Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - P. Bannas
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
| | - B. P. Schoennagel
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251 Hamburg, Germany
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Tuan L, Samarawickrema I, Goodwin B, Raman Srinivasan J, McLean M, Knapp J, Abbott T, Gilmayer G, Jones-Lewis N, George L, Pathak R. Characteristics and Long-term Outcomes of Patients With Left Ventricular Papillary Muscle Arrhythmias. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.151] [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: 10/16/2022]
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5
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Raman Srinivasan J, Chandh Raja D, Tuan L, Samarawickrema I, Jones-Lewis N, Gilmayer G, Knapp J, Abbott T, Goodwin B, George L, Pathak R. Relationship Between Abnormal Signal-averaged Electrocardiograms and Left Ventricular Ejection Fraction in Patients With Non-Ischaemic Cardiomyopathy. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.189] [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: 10/16/2022]
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6
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Tuan L, Samarawickrema I, Raman srinivasan J, Goodwin B, McLean M, Jones-Lewis N, Gilmayer G, Abbott T, George L, Knapp J, Pathak R. MRI Characteristics and Long-term Outcomes of Patients With Left Ventricular Papillary Muscle Arrhythmias Undergoing Catheter Ablation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.176] [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: 11/26/2022]
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7
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Tuan L, Samarawickrema I, Goodwin B, Raman srinivasan J, McLean M, Jones-Lewis N, George L, Gilmayer G, Abbott T, Knapp J, Pathak R. Ventricular Tachycardia Originating Near the His-Bundle: Electrocardiographic and Catheter Ablation Characteristics. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.206] [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: 11/16/2022]
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8
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Levy H, Domenico J, Zhang X, Moore C, Knapp J, Harmacek L, Mhlanga M. 641: Characterization of the cystic fibrosis transmembrane conductance regulator–associated lncRNAs in the innate immune response in cystic fibrosis. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02064-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Kaiser HA, Knapp J, Sleigh J, Avidan MS, Stüber F, Hight D. [The quantitative EEG in electroencephalogram-based brain monitoring during general anesthesia]. Anaesthesist 2021; 70:531-547. [PMID: 33970302 PMCID: PMC8108440 DOI: 10.1007/s00101-021-00960-5] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2021] [Indexed: 11/12/2022]
Abstract
The electroencephalogram (EEG) is increasingly being used in the clinical routine of anesthesia in German-speaking countries. In over 90% of patients the frontal EEG changes somewhat predictably in response to administration of the normally used anesthetic agents (propofol and volatile gasses). An adequate depth of anesthesia and appropriate concentrations of anesthetics in the brain generate mostly frontal oscillations between 8 and 12 Hz as well as slow delta waves between 0.5 and 4 Hz. The frontal EEG channel is well-suited for avoidance of insufficient depth of anesthesia and excessive administration of anesthetics. This article explains the clinical interpretation of the most important EEG patterns and the biophysical background. Also discussed are important limitations and pitfalls for the clinical routine, which the anesthetist should know in order to utilize the EEG as an admittedly incomplete but clinically extremely important parameter for the level of consciousness.
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Affiliation(s)
- H A Kaiser
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Inselspital, Universitätsspital Bern, Freiburgstr., 3010, Bern, Schweiz.
| | - J Knapp
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Inselspital, Universitätsspital Bern, Freiburgstr., 3010, Bern, Schweiz
| | - J Sleigh
- Department of Anaesthesia, Waikato Clinical School, University of Auckland, Hamilton, Neuseeland
| | - M S Avidan
- Department of Anesthesiology, Washington University School of Medicine, 660 S. Euclid Ave., MO 63110, St. Louis, USA
| | - F Stüber
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Inselspital, Universitätsspital Bern, Freiburgstr., 3010, Bern, Schweiz
| | - D Hight
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Inselspital, Universitätsspital Bern, Freiburgstr., 3010, Bern, Schweiz
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10
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Abstract
INTRODUCTION The aging homeless population currently makes up half the general homeless population. However, there are few homeless emergency shelters that can address their needs. This results in an overutilization of inpatient admissions and emergency room services. METHODS Homeless service staff from VA Palo Alto Health Care System partnered with a local homeless emergency housing provider, Compassion Residio Services Inc., to implement this new model of care for aging, medically fragile homeless Veterans. This emergency housing model utilizes practices done in geriatric settings. This model aimed to help decrease the utilization of emergency departments and inpatient admissions. RESULTS The average cost of emergency department visits and inpatient admissions was $127,314 per Veteran 6 months before admission. Six months after discharge, the average cost of treatment from emergency department visits and inpatient admissions was roughly $59,546 after discharge, a 53% decrease. Emergency department visits decreased from an average of 5.6 visits per Veteran 6 months before admission to 2.65 visits after 6 months discharge. The number of inpatient nights decreased from an average of 15 days per admission in the 6 months before the program to 13 days. Total admissions decreased by nearly half from 48 the previous 6 months to 25 after 6 months. DISCUSSION Overall, as residents settled into stable environments tailored around geriatric care, the utilization of emergency department visits and inpatient services decreased. Furthermore, the complexity (eg, cost per encounter) also decreased.
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11
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Pietsch U, Knapp J, Wenzel V, Lischke V, Albrecht R. [Automatic load-distributing band CPR (AutoPulse™) in prone position, feasible?]. Anaesthesist 2020; 70:247-249. [PMID: 32968843 PMCID: PMC7510768 DOI: 10.1007/s00101-020-00851-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Due to SARS-CoV‑2 respiratory failure, prone positioning of patients with respiratory and hemodynamic instability has become a frequent intervention in intensive care units (ICUs), and even in patients undergoing transfer in an ambulance or helicopter. It has become increasingly important how to perform safe and effective CPR in prone position, achieving both an optimal outcome for the patient and optimal protection of staff from infection. MATERIALS AND METHODS We conducted feasibility tests to assess the effects of CPR with an automatic load-distributing band (AutoPulse™) in prone position and discussed different aspects of mechanical chest compression (mCPR) in prone position. RESULTS In supine position, AutoPulse™ generated a constant pressure depth of 3cm at a frequency of 84/min. In prone position, AutoPulse™ generated a constant pressure depth of 2.6cm at a frequency of 84/min. CONCLUSION We found mCPR to be feasible in manikins in both prone and supine positions.
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Affiliation(s)
- U Pietsch
- Klinik für Anästhesie und Intensivmedizin, Kantonsspital, Rorschacher Str. 95, 9007, St. Gallen, Schweiz. .,Schweizer Rettungsflugwacht, Zürich, Schweiz.
| | - J Knapp
- Klinik für Anästhesiologie und Schmerztherapie, Universitätsspital Bern, Bern, Schweiz
| | - V Wenzel
- Klinik für Anästhesie und Intensivmedizin, Klinikum Friedrichshafen, Friedrichshafen, Deutschland
| | | | - R Albrecht
- Schweizer Rettungsflugwacht, Zürich, Schweiz
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12
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Trentzsch H, Flake F, Häske D, Hossfeld B, Knapp J, Gotthardt P. [Recommendations for therapy in pandemic times: Acting (and treating) correctly under pressure to act]. Notf Rett Med 2020; 23:382-384. [PMID: 32837304 PMCID: PMC7359438 DOI: 10.1007/s10049-020-00739-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- H. Trentzsch
- Institut für Notfallmedizin und Medizinmanagement (INM), Klinikum der Universität München, LMU München, Schillerstr. 53, 80336 München, Deutschland
| | - F. Flake
- Notfallvorsorge Oldenburg Nord, Malteser Hilfsdienst e. V., Oldenburg, Deutschland
| | - D. Häske
- Zentrum für öffentliches Gesundheitswesen und Versorgungsforschung Tübingen, Universitätsklinikum Tübingen, Tübingen, Deutschland
| | - B. Hossfeld
- Notfallmedizinisches Zentrum, Klinik für Anästhesiologie, Intensivmedizin, Notfallmedizin u. Schmerztherapie, Bundeswehrkrankenhaus Ulm, Ulm, Deutschland
| | - J. Knapp
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Universitätsspital Bern, Bern, Schweiz
| | - P. Gotthardt
- Klinikum Nürnberg – Klinik für Kardiologie – Zentrale Notaufnahme Süd, Breslauer Str. 201, 90471 Nürnberg, Deutschland
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13
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Wu Y, Weile J, Cote AG, Sun S, Knapp J, Verby M, Roth FP. A web application and service for imputing and visualizing missense variant effect maps. Bioinformatics 2020; 35:3191-3193. [PMID: 30649215 PMCID: PMC6735881 DOI: 10.1093/bioinformatics/btz012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/04/2018] [Accepted: 01/07/2019] [Indexed: 11/24/2022] Open
Abstract
Summary The promise of personalized genomic medicine depends on our ability to assess the functional impact of rare sequence variation. Multiplexed assays can experimentally measure the functional impact of missense variants on a massive scale. However, even after such assays, many missense variants remain poorly measured. Here we describe a software pipeline and application to impute missing information in experimentally determined variant effect maps. Availability and implementation http://impute.varianteffect.org source code: https://github.com/joewuca/imputation. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Yingzhou Wu
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Jochen Weile
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Atina G Cote
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Song Sun
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Jennifer Knapp
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Marta Verby
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
| | - Frederick P Roth
- Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada.,Center for Cancer Systems Biology, Dana Farber Cancer Institute, Boston, MA, USA.,Canadian Institute for Advanced Research, Toronto, ON, Canada
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14
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Tu THC, Knapp J, Harmacek L, Magallon R, Vestal B, Leach S, Danhorn T, Li L, Gillespie M, MacPhail K, Riley C, Barkes B, Elliott J, Arger N, Sommer A, Powers L, Werner B, Fingerlin T, Maier L, Koth L, Hamzeh N, O’Connor B. Altered CD4+ T cell Transcriptional and Epigenetic Programming Define Changes in Sarcoidosis Disease Phenotypes. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.224.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Abstract
Sarcoidosis is an inflammatory disease, which is characterized by granulomas in the lungs, extrapulmonary inflammation, and can cause death by lung fibrosis. It is known that CD4+ T cell lung population increases in Sarcoidosis. However, the immunopathology remains unclear and no biomarker has been identified. Here we use RNA-seq to examine gene expression in CD4+ T cells of differential Sarcoidosis phenotypes and healthy donors. Our data showed that BATF, a Tfh inducer/key factor in Th17 differentiation was up-regulated while BCL6, a Th17 repressor is down-regulated in RNA-seq. IRF4 and BCL6 were identified as potential transcriptional upstream regulators using IPA. IL-4 and fibrosis related genes were differentially expressed with altered disease phenotype, indicating that type 2 immune response may participate in disease phenotype progression for development of fibrosis. In addition, we used ChIP-seq and ATAC-seq to examine genome-wide epigenetic histone signatures and global chromatin accessibility associated with Sarcoidosis phenotypes. TF binding-site analysis of ATAC-seq peaks revealed an enrichment of BATF binding motifs, highlighting the utility of integrating epigenetic and transcriptional signatures to suggest molecular drivers of Sarcoidosis. Our findings identified several potential immune related biomarkers and molecular mechanisms that may drive disease progression.
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Affiliation(s)
| | | | | | | | | | | | | | - Lily Li
- 2Dept. of Medicine, National Jewish Health Hospital
| | | | | | | | | | - Jill Elliott
- 2Dept. of Medicine, National Jewish Health Hospital
| | | | | | | | | | | | - Lisa Maier
- 2Dept. of Medicine, National Jewish Health Hospital
| | | | | | - Brian O’Connor
- 1CGEH, National Jewish Health Hospital
- 5Dept. of Immunology & Microbiology, University of Colorado
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15
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Knapp J, Bernhard M, Haltmeier T, Bieler D, Hossfeld B, Kulla M. [Resuscitative endovascular balloon occlusion of the aorta : Option for incompressible trunk bleeding?]. Anaesthesist 2019; 67:280-292. [PMID: 29508015 DOI: 10.1007/s00101-018-0418-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hemorrhage is the single largest cause of avoidable death in trauma patients, whereby in civil emergency medicine in Europe most life-threatening hemorrhages occur in the abdomen and the pelvis. This is one reason why endovascular balloon occlusion of the aorta (EBOA), a procedure especially established in vascular surgery, is increasingly propagated for rapid bleeding control in these patients. This review article provides a comprehensive overview of the technique, indications, contraindications and complications of resuscitative endovascular balloon occlusion of the aorta (REBOA). Additionally, outcomes reported in in the currently available literature are summarized and discussed. From this practical and user-oriented consequences for future successful introduction of REBOA in the field of emergency medicine are deduced.
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Affiliation(s)
- J Knapp
- Universitätsklinik für Anästhesiologie und Schmerztherapie, Universitätsspital Bern, Freiburgstrasse 8, Bern, Schweiz.
| | - M Bernhard
- Zentrale Notaufnahme, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - T Haltmeier
- Universitätsklinik für Viszerale Chirurgie und Medizin, Universitätsspital Bern, Bern, Schweiz
| | - D Bieler
- Klinik für Unfallchirurgie und Orthopädie, Wiederherstellungs- und Handchirurgie, Verbrennungsmedizin, Bundeswehrzentralkrankenhaus Koblenz, Koblenz, Deutschland
| | - B Hossfeld
- Klinik für Anästhesiologie und Intensivmedizin/Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Ulm, Deutschland
| | - M Kulla
- Klinik für Anästhesiologie und Intensivmedizin/Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Ulm, Deutschland
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17
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Knapp J, Tsai T, Maxwell C, Apple J, Chewning J. PSIV-4 The effect of peptide product and ZnO on growth performance in nursery pigs fed different levels of crude protein diets. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Knapp
- Department of Animal Science, Division of Agriculture, University of Arkansas,Fayetteville, Wichita, KS, United States
| | - T Tsai
- Department of Animal Science, Division of Agriculture, University of Arkansas,Fayetteville, Fayetteville, AR, United States
| | - C Maxwell
- Department of Animal Science, Division of Agriculture, University of Arkansas,Fayetteville, Fayetteville, AR, United States
| | - J Apple
- Department of Animal Science, Division of Agriculture, University of Arkansas,Fayetteville, Fayetteville, AR, United States
| | - J Chewning
- Swine Research Services, Inc.,Springdale, AR, United States
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Knapp J, Zylla M, Schaper A, Michalski D, Hartwig S, Bernhard M. Energydrinks in der Notfallmedizin – verleihen nicht nur Flügel. Notf Rett Med 2018. [DOI: 10.1007/s10049-017-0386-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lier H, Bernhard M, Knapp J, Buschmann C, Bretschneider I, Hossfeld B. [Approaches to pre-hospital bleeding management : Current overview on civilian emergency medicine]. Anaesthesist 2018; 66:867-878. [PMID: 28785773 DOI: 10.1007/s00101-017-0350-0] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Severe bleeding is a typical result of traumatic injuries. Hemorrhage is responsible for almost 50% of deaths within the first 6 h after trauma. Appropriate bleeding control and coagulation therapy depends on an integrated concept of local hemostasis by primary pressure with the hands, compression, and tourniquets accompanied by prevention of hypothermia, acidosis and hypocalcemia. Additionally, permissive hypotension is accepted for suitable patients and tranexamic acid should be administered early. Multiple publications prove that prehospital transfusion of blood products (e. g. red blood cells and plasma) and coagulation factors (e. g. fibrinogen) is feasible and safe, but only required for <5% of polytrauma patients in the civilian setting.
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Affiliation(s)
- H Lier
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Köln (AöR), Kerpener Straße 62, 50937, Köln, Deutschland. .,Arbeitsgruppe "Taktische Medizin" des Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland.
| | - M Bernhard
- Zentrale Notaufnahme, Universitätsklinikum Leipzig, Leipzig, Deutschland.,Arbeitsgruppe "Trauma- und Schockraummanagement" des Arbeitskreis Notfallmedizin, Deutschen Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland
| | - J Knapp
- Klinik für Anästhesiologie und Schmerztherapie, Universitätsspital Bern, Bern, Schweiz.,Air Zermatt, Zermatt, Schweiz
| | - C Buschmann
- Institut für Rechtsmedizin, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - I Bretschneider
- Klinik für Anästhesiologie & Intensivmedizin, Bundeswehrkrankenhaus, Ulm, Deutschland
| | - B Hossfeld
- Klinik für Anästhesiologie & Intensivmedizin, Bundeswehrkrankenhaus, Ulm, Deutschland.,Arbeitsgruppe "Taktische Medizin" des Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland
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20
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Gotthardt P, Häske D, Hossfeld B, Knapp J. „Einfach und praktisch“. Notf Rett Med 2018. [DOI: 10.1007/s10049-017-0406-3] [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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21
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Aehling C, Weber NC, Zuurbier CJ, Preckel B, Galmbacher R, Stefan K, Hollmann MW, Popp E, Knapp J. Effects of combined helium pre/post-conditioning on the brain and heart in a rat resuscitation model. Acta Anaesthesiol Scand 2018; 62:63-74. [PMID: 29159800 DOI: 10.1111/aas.13041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 10/20/2017] [Accepted: 11/01/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND The noble gas helium induces cardio- and neuroprotection by pre- and post-conditioning. We investigated the effects of helium pre- and post-conditioning on the brain and heart in a rat resuscitation model. METHODS After approval by the Animal Care Committee, 96 Wistar rats underwent cardiac arrest for 6 min induced by ventricular fibrillation. Animals received 70% helium and 30% oxygen for 5 min before cardiac arrest and for 30 min after restoration of spontaneous circulation (ROSC). Control animals received 70% nitrogen and 30% oxygen. Hearts and brains were excised after 2, 4 h or 7 days. Neurological degeneration was evaluated using TUNEL and Nissl staining in the hippocampal CA-1 sector. Cognitive function after 7 days was detected with the tape removal test. Molecular targets were measured by infrared western blot. Data are shown as median [Interquartile range]. RESULTS Helium treatment resulted in significantly less apoptosis (TUNEL positive cells/100 pixel 73.5 [60.3-78.6] vs.78.2 [70.4-92.9] P = 0.023). Changes in Caveolin-3 expression in the membrane fraction and Hexokinase-II in the mitochondrial fraction were observed in the heart. Caveolin-1 expression of treated animals significantly differed from control animals in the membrane fraction of the heart and brain after ROSC. CONCLUSION Treatment with helium reduced apoptosis in our resuscitation model. Differential expression levels of Caveolin-1, Caveolin-3 and Hexokinase II in the heart were found after helium pre- and post-conditioning. No beneficial effects were seen on neurofunctional outcome.
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Affiliation(s)
- C. Aehling
- Department of Anesthesiology; Laboratory of Experimental Anesthesiology and Intensive Care; Academic Medical Center; Amsterdam The Netherlands
- Department of Anesthesiology; University Hospital of Heidelberg; Heidelberg Germany
| | - N. C. Weber
- Department of Anesthesiology; Laboratory of Experimental Anesthesiology and Intensive Care; Academic Medical Center; Amsterdam The Netherlands
| | - C. J. Zuurbier
- Department of Anesthesiology; Laboratory of Experimental Anesthesiology and Intensive Care; Academic Medical Center; Amsterdam The Netherlands
| | - B. Preckel
- Department of Anesthesiology; Laboratory of Experimental Anesthesiology and Intensive Care; Academic Medical Center; Amsterdam The Netherlands
| | - R. Galmbacher
- Department of Anesthesiology; University Hospital of Heidelberg; Heidelberg Germany
| | - K. Stefan
- Department of Anesthesiology; University Hospital of Heidelberg; Heidelberg Germany
| | - M. W. Hollmann
- Department of Anesthesiology; Laboratory of Experimental Anesthesiology and Intensive Care; Academic Medical Center; Amsterdam The Netherlands
| | - E. Popp
- Department of Anesthesiology; University Hospital of Heidelberg; Heidelberg Germany
| | - J. Knapp
- Department of Anesthesiology; University Hospital of Heidelberg; Heidelberg Germany
- Department of Anesthesiology and Pain Medicine; University Hospital of Bern; Bern Switzerland
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22
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Weile J, Sun S, Cote AG, Knapp J, Verby M, Mellor JC, Wu Y, Pons C, Wong C, van Lieshout N, Yang F, Tasan M, Tan G, Yang S, Fowler DM, Nussbaum R, Bloom JD, Vidal M, Hill DE, Aloy P, Roth FP. A framework for exhaustively mapping functional missense variants. Mol Syst Biol 2017; 13:957. [PMID: 29269382 PMCID: PMC5740498 DOI: 10.15252/msb.20177908] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [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] [Indexed: 01/10/2023] Open
Abstract
Although we now routinely sequence human genomes, we can confidently identify only a fraction of the sequence variants that have a functional impact. Here, we developed a deep mutational scanning framework that produces exhaustive maps for human missense variants by combining random codon mutagenesis and multiplexed functional variation assays with computational imputation and refinement. We applied this framework to four proteins corresponding to six human genes: UBE2I (encoding SUMO E2 conjugase), SUMO1 (small ubiquitin‐like modifier), TPK1 (thiamin pyrophosphokinase), and CALM1/2/3 (three genes encoding the protein calmodulin). The resulting maps recapitulate known protein features and confidently identify pathogenic variation. Assays potentially amenable to deep mutational scanning are already available for 57% of human disease genes, suggesting that DMS could ultimately map functional variation for all human disease genes.
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Affiliation(s)
- Jochen Weile
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada
| | - Song Sun
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada.,Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Atina G Cote
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Jennifer Knapp
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Marta Verby
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Joseph C Mellor
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,SeqWell Inc, Boston, MA, USA
| | - Yingzhou Wu
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada
| | - Carles Pons
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute for Science and Technology, Barcelona, Catalonia, Spain
| | - Cassandra Wong
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | | | - Fan Yang
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada
| | - Murat Tasan
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada
| | - Guihong Tan
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Shan Yang
- Invitae Corp., San Francisco, CA, USA
| | - Douglas M Fowler
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | | | | | - Marc Vidal
- Center for Cancer Systems Biology (CCSB), Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - David E Hill
- Center for Cancer Systems Biology (CCSB), Dana-Farber Cancer Institute, Boston, MA, USA
| | - Patrick Aloy
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute for Science and Technology, Barcelona, Catalonia, Spain.,Institució Catalana de Recerca I Estudis Avançats (ICREA), Barcelona, Catalonia, Spain
| | - Frederick P Roth
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada .,The Donnelly Centre, University of Toronto, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Computer Science, University of Toronto, Toronto, ON, Canada.,Canadian Institute for Advanced Research, Toronto, ON, Canada
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24
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Donovan H, Sereika S, Edwards R, Bender C, Given B, Hughes S, Klein S, Knapp J, Nolte S, Roberge M, Spring M, Wenzel L, Ward S. Effects of the WRITE Symptoms interventions on symptom and quality-of-life outcomes for women with recurrent ovarian cancer. GOG-259: An NRG Oncology/Gynecologic Oncology Group study. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.073] [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: 10/19/2022]
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25
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Veldhoen S, Weng A, Knapp J, Kunz A, Stab D, Wirth C, Segerer F, Hebestreit H, Malzahn U, Köstler H, Bley T. Die selbstnavigierte und kontrastmittelfreie funktionelle Lungen-MRT zur quantitativen Ventilationsanalyse bei Patienten mit cystischer Fibrose. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S Veldhoen
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - A Weng
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - J Knapp
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - A Kunz
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - D Stab
- University of Queensland, Centre of Advanced Imaging, Brisbane
| | - C Wirth
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - F Segerer
- Universitätsklinikum Würzburg, Kinderklinik und Poliklinik, Würzburg
| | - H Hebestreit
- Universitätsklinikum Würzburg, Kinderklinik und Poliklinik, Würzburg
| | - U Malzahn
- Universitätsklinikum Würzburg, Zentrale für Klinische Studien, Würzburg
| | - H Köstler
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
| | - T Bley
- Universitätsklinikum Würzburg, Institut für Diagnostische und Interventionelle Radiologie, Würzburg
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Becher MA, Grimm V, Knapp J, Horn J, Twiston-Davies G, Osborne JL. BEESCOUT: A model of bee scouting behaviour and a software tool for characterizing nectar/pollen landscapes for BEEHAVE. Ecol Modell 2016; 340:126-133. [PMID: 27890965 PMCID: PMC5070411 DOI: 10.1016/j.ecolmodel.2016.09.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BEESCOUT is a spatially explicit, individual-based model of scouting bees. It determines the detection probabilities of food sources. It can be linked to the honey bee model BEEHAVE to predict colony development.
Social bees are central place foragers collecting floral resources from the surrounding landscape, but little is known about the probability of a scouting bee finding a particular flower patch. We therefore developed a software tool, BEESCOUT, to theoretically examine how bees might explore a landscape and distribute their scouting activities over time and space. An image file can be imported, which is interpreted by the model as a “forage map” with certain colours representing certain crops or habitat types as specified by the user. BEESCOUT calculates the size and location of these potential food sources in that landscape relative to a bee colony. An individual-based model then determines the detection probabilities of the food patches by bees, based on parameter values gathered from the flight patterns of radar-tracked honeybees and bumblebees. Various “search modes” describe hypothetical search strategies for the long-range exploration of scouting bees. The resulting detection probabilities of forage patches can be used as input for the recently developed honeybee model BEEHAVE, to explore realistic scenarios of colony growth and death in response to different stressors. In example simulations, we find that detection probabilities for food sources close to the colony fit empirical data reasonably well. However, for food sources further away no empirical data are available to validate model output. The simulated detection probabilities depend largely on the bees’ search mode, and whether they exchange information about food source locations. Nevertheless, we show that landscape structure and connectivity of food sources can have a strong impact on the results. We believe that BEESCOUT is a valuable tool to better understand how landscape configurations and searching behaviour of bees affect detection probabilities of food sources. It can also guide the collection of relevant data and the design of experiments to close knowledge gaps, and provides a useful extension to the BEEHAVE honeybee model, enabling future users to explore how landscape structure and food availability affect the foraging decisions and patch visitation rates of the bees and, in consequence, to predict colony development and survival.
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Affiliation(s)
- M A Becher
- Environment & Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
| | - V Grimm
- UFZ, Helmholtz Centre for Environmental Research-UFZ, Permoserstr. 15, 04318 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - J Knapp
- Environment & Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
| | - J Horn
- UFZ, Helmholtz Centre for Environmental Research-UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - G Twiston-Davies
- Environment & Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
| | - J L Osborne
- Environment & Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
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Ogony JW, Hayes E, Knapp J, Lewis-Wambi J. Abstract 1900: MiR-222 accelerates the progression of inflammatory breast cancer by targeting tumor suppressor gene p27kip1 (CDKN1B). Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-1900] [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: 11/16/2022]
Abstract
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs about 18-22 nucleotides in length, whose main role is to regulate gene expression by altering mRNA stability and translation. MicroRNAs have been shown to play a role in many types of cancer, including breast cancer by targeting tumor suppressor genes such as p53, p27, PTEN, BRCA1, BRCA2 and many others. The goal of this study was to investigate the role of miRNAs in inflammatory breast cancer (IBC). IBC is the most aggressive and metastatic form of breast cancer, that is characterized by very rapid progression, poor prognosis, with a 5 year survival outcome of 30-40%. The mechanism that underlies the rapid progression of IBC is currently under intense investigation, and novel approaches are needed to better understand this disease. To understand the role that microRNAs might play in IBC, we conducted next generation sequencing of the miRNAs from two IBC cell line, SUM149 which is a triple negative IBC (ER-, PR-, HER2-), and SUM190 which is HER2 overexpressing, but ER and PR negative (ER-, PR-, HER2+). We found that 463 miRNAs were differentially expressed in the two cell lines, with 243 miRNAs being overexpressed in SUM149 compared to SUM190, while 220 miRNAs were overexpressed in SUM190. Notably, our qPCR analysis confirmed the raw read counts, showing that miR-155, miR-221, and miR-222 were overexpressed in SUM149 as compared to SUM190 cells by 15, 10, and 3 fold respectively. Furthermore, the inhibition of miR-222 in SUM149 resulted in significant reduction in cell proliferation, tumorsphere formation, and migration in these cells as compared to SUM190 cells. Our flow cytometry data showed that there was cell cycle arrest at the G1 phase in SUM149 cells due to miR-222 inhibition, while SUM190 cells showed little or no change. Additionally, Western blot and immunofluorescence analyses showed that the protein levels of p27, which is one of the targets of miR-222, significantly increased in SUM149 cells, but not in SUM190 cells when miR-222 inhibitor was used in these cells. These results suggest that miR-222 may accelerate the progression of some IBCs by targeting tumor suppressor genes, resulting in rapid cell proliferation, and may be a potential therapeutic target for triple negative inflammatory breast cancers.
Citation Format: Joshua Were Ogony, Erin Hayes, Jennifer Knapp, Joan Lewis-Wambi. MiR-222 accelerates the progression of inflammatory breast cancer by targeting tumor suppressor gene p27kip1 (CDKN1B). [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 1900.
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Affiliation(s)
| | - Erin Hayes
- University of Kansas Medical Center, Kansas City, KS
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Bauerschmitz GJ, Knapp J, Schmidt E, Olbrich T, Emons G, Gründker C. Inhibition SDF-1/CXCR4-induzierter Epithelial-mesenchymaler Transition (EMT) durch Kisspeptin-10. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0035-1570038] [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: 10/22/2022] Open
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Elsarraj H, Yan H, Knapp J, Tsimelzon A, Huang S, Godwin A, Hilsenbeck S, Edwards D, Behbod F. Abstract B01: B cell lymphoma 9 mediates a cross talk between the canonical Wnt and EGFR signaling in breast cancer. Mol Cancer Res 2016. [DOI: 10.1158/1557-3125.advbc15-b01] [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: 11/16/2022]
Abstract
Abstract
Human ductal carcinoma in situ (DCIS) are the most common type of non-invasive breast cancers. The five-year survival rate for women diagnosed with non-invasive DCIS is 98% while the five-year survival plummets to 83-27% for breast cancers that have become invasive and have spread to distant sites [also referred to as invasive ductal carcinoma (IDC)]. To study DCIS pathobiology and factors that promote their transition to IDC, we have developed a novel in vivo DCIS model, MIND (mouse-intraductal), that involves intraductal injection of epithelial cells derived from primary human DCIS biopsy and surgical samples thus mimicking the entire process of DCIS to IDC transition. As a complementary approach, we have utilized human DCIS/IDC tandem lesions, which are patient DCIS that show a transition to IDC within the same breast. Analysis of RNA and protein at distinct stages of in situ to IDC using both models showed B cell lymphoma-9 (BCL9) up-regulation to be associated with DCIS transition to IDC. BCL9 is a recently identified co-activator of Wnt-stimulated beta-catenin-mediated transcription. Our studies showed that in vivo silencing of BCL9 led to inhibition of DCIS invasion and reversal of EMT. We have also demonstrated a direct binding interaction between BCL9 and beta-catenin and showed suppression of beta-catenin-mediated transcription by BCL9 knockdown. Analysis of patient DCIS samples revealed a significant correlation between high nuclear BCL9 expression and pathologic characteristics associated with DCIS recurrence: Estrogen receptor (ER) negative and Ki67. Furthermore, analysis of the TCGA data showed BCL9 gene to be upregulated in 26% of breast cancers. This is a significant gene alteration when compared to HER2 (ERBB2) gene (19%) and estrogen receptor (ESR1) gene (8%) alterations in breast cancers. Interestingly, a significantly higher proportion of basal like invasive breast cancers compared to luminal breast cancers showed BCL9 amplification suggesting that BCL9 may predispose to the development of basal breast cancers. We have performed an RPPA analysis on our DCIS cell lines KD BCL9 vs. control. This analysis indicated that BCL9 KD showed down-regulation in a number of genes in the EGFR signaling pathway including p-EGFR, p-HER2, p-STAT3, and p-Src. Conclusion: BCL9 is a molecular driver of DCIS invasive progression. The molecular mechanism for BCL9's role in breast cancer progression is through the enhancement in the canonical Wnt and EGFR signaling.
Citation Format: Hanan Elsarraj, Hong Yan, Jennifer Knapp, Anna Tsimelzon, Shixia Huang, Andrew Godwin, Sue Hilsenbeck, Dean Edwards, Fariba Behbod. B cell lymphoma 9 mediates a cross talk between the canonical Wnt and EGFR signaling in breast cancer. [abstract]. In: Proceedings of the AACR Special Conference on Advances in Breast Cancer Research; Oct 17-20, 2015; Bellevue, WA. Philadelphia (PA): AACR; Mol Cancer Res 2016;14(2_Suppl):Abstract nr B01.
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Affiliation(s)
| | - Hong Yan
- 1University of Kansas, Kansas City, KS,
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Shogren KA, Abery B, Antosh A, Broussard R, Coppens B, Finn C, Goodman A, Harris C, Knapp J, Martinis J, Ne'eman A, Nelis T, Wehmeyer ML. Recommendations of the Self-Determination and Self-Advocacy Strand From the National Goals 2015 Conference. ACTA ACUST UNITED AC 2015. [DOI: 10.1352/2326-6988-3.4.205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Abstract
This article reports the recommendations of the Self-Determination and Self-Advocacy Strand from the National Goals 2015 conference. The recommendations provide direction on research goals to advance policy and practice related to self-advocacy and self-determination over the next 10 years. Seven recommendations and multiple subrecommendations were developed over a 2-day meeting by leaders in the field of intellectual and developmental disabilities. The recommended goals provide direction for research initiatives related to collective self-advocacy and personal self-determination. Implications for the field are discussed.
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Affiliation(s)
| | | | | | | | | | - Chester Finn
- Chester Finn, New York State Office for People With Developmental Disabilities
| | | | | | | | | | | | - Tia Nelis
- Tia Nelis, University of Illinois-Chicago and Self-Advocates Becoming Empowered; and
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Vuitton D, Demonmerot F, Knapp J, Richou C, Grenouillet F, Chauchet A, Vuitton L, Bresson-Hadni S, Millon L. Clinical epidemiology of human AE in Europe. Vet Parasitol 2015; 213:110-20. [DOI: 10.1016/j.vetpar.2015.07.036] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hayes EL, Knapp J, Lewis-Wambi J. Abstract 3993: MicroRNA analysis of aromatase inhibitor-resistant breast cancer cells reveals upregulation of a unique miRNA cluster on chromosome 14. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-3993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Estrogen signaling has been shown to play a large role in the development and progression of breast tumors that express the estrogen receptor (ERα). Thus, endocrine therapies that either inhibit ERα action (tamoxifen or fulvestrant) or inhibit estrogen synthesis (aromatase inhibitors) have been increasingly valuable for the management of ER+ breast cancer. A frequent obstacle, however, is acquired resistance to endocrine therapies, often characterized by aberrant ERα expression and heightened growth factor signaling. Another aspect of acquired endocrine resistance that is now being examined is the role of microRNA (miRNA). miRNAs are 18-22 base pair RNA molecules whose primary role is to inhibit expression of mRNA targets by inhibition of translation or by degradation of the mRNA. Here, we have conducted next generation sequencing of the miRNA from three breast cancer cell lines - one ER+ line that is estrogen-dependent and AI-sensitive (MCF-7), and two ER+ long-term estrogen deprived (LTED) models of AI resistance (MCF-7:5C and MCF-7:2A). We found that in LTED/AI-resistant MCF-7:5C and MCF-7:2A cells there were over 330 and 240 miRNAs differentially expressed, respectively, compared to AI-sensitive MCF-7 breast cancer cells. Initially, we used qPCR to validate the expression of miRNAs that that were differentially expressed in both LTED cell lines vs. MCF-7. Notably, LTED cell lines had upregulated miR-181a (> 4 to 8-fold) and downregulated miR-221/222 expression compared to MCF-7. Elevated miR-181a has been shown to be associated with more aggressive breast cancers whereas miR-221/222 play a role in tamoxifen resistance through targeting ERα. Further bioinformatic analysis also revealed that the LTED cells had very unique expression profiles compared to one another, indicating that they have adapted to an estrogen-depleted environment through potentially different mechanisms. In MCF-7:5C cells, which have lost expression of the progesterone receptor (PR), a miRNA cluster on chromosome 14 is upregulated. This upregulated cluster, which encodes miR-127, miR-654, miR-889 and others, has been shown to be associated with Luminal B (ER+/PR-) breast cancer, consistent with the hormone receptor status of the MCF-7:5C cells. The oncogenic, estrogen-responsive miR-17/92 cluster on chromosome 13 is upregulated in the MCF-7:2A cells and these miRNAs target proteins including PTEN, p21, and Bim. Overall, these findings reveal altered expression of miRNAs in AI-resistant breast cancer cells and they suggest that targeting these miRNAs might be an effective strategy to reverse AI resistance in breast cancer patients.
Citation Format: Erin L. Hayes, Jennifer Knapp, Joan Lewis-Wambi. MicroRNA analysis of aromatase inhibitor-resistant breast cancer cells reveals upregulation of a unique miRNA cluster on chromosome 14. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3993. doi:10.1158/1538-7445.AM2015-3993
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Affiliation(s)
- Erin L. Hayes
- University of Kansas Medical Center, Kansas City, KS
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Yao L, Li Y, Knapp J, Smith P. Exploration of molecular pathways mediating electric field-directed Schwann cell migration by RNA-seq. J Cell Physiol 2015; 230:1515-24. [PMID: 25557037 DOI: 10.1002/jcp.24897] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 12/15/2014] [Indexed: 01/03/2023]
Abstract
In peripheral nervous systems, Schwann cells wrap around axons of motor and sensory neurons to form the myelin sheath. Following spinal cord injury, Schwann cells regenerate and migrate to the lesion and are involved in the spinal cord regeneration process. Transplantation of Schwann cells into injured neural tissue results in enhanced spinal axonal regeneration. Effective directional migration of Schwann cells is critical in the neural regeneration process. In this study, we report that Schwann cells migrate anodally in an applied electric field (EF). The directedness and displacement of anodal migration increased significantly when the strength of the EF increased from 50 mV/mm to 200 mV/mm. The EF did not significantly affect the cell migration speed. To explore the genes and signaling pathways that regulate cell migration in EFs, we performed a comparative analysis of differential gene expression between cells stimulated with an EF (100 mV/mm) and those without using next-generation RNA sequencing, verified by RT-qPCR. Based on the cut-off criteria (FC > 1.2, q < 0.05), we identified 1,045 up-regulated and 1,636 down-regulated genes in control cells versus EF-stimulated cells. A Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis found that compared to the control group, 21 pathways are down-regulated, while 10 pathways are up-regulated. Differentially expressed genes participate in multiple cellular signaling pathways involved in the regulation of cell migration, including pathways of regulation of actin cytoskeleton, focal adhesion, and PI3K-Akt.
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Affiliation(s)
- Li Yao
- Department of Biological Sciences, Wichita State University, Wichita, Kansas
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Piarroux M, Gaudart J, Bresson-Hadni S, Bardonnet K, Faucher B, Grenouillet F, Knapp J, Dumortier J, Watelet J, Gerard A, Beytout J, Abergel A, Wallon M, Vuitton DA, Piarroux R, the FrancEchino network C. Landscape and climatic characteristics associated with human alveolar echinococcosis in France, 1982 to 2007. Euro Surveill 2015; 20. [DOI: 10.2807/1560-7917.es2015.20.18.21118] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- M Piarroux
- Aix-Marseille University, INSERM-IRD-AMU UMR 912, Marseille, France
| | - J Gaudart
- Aix-Marseille University, INSERM-IRD-AMU UMR 912, Marseille, France
| | - S Bresson-Hadni
- Franche-Comté University, CNRS UMR 6249, Besançon, France
- WHO Collaborating Centre for Prevention and Treatment of Human Echinococcosis, University Hospital Jean Minjoz, Department of digestive surgery, Besançon, France
| | - K Bardonnet
- WHO Collaborating Centre for Prevention and Treatment of Human Echinococcosis, University Hospital Jean Minjoz, Department of digestive surgery, Besançon, France
- University Hospital Jean Minjoz, Department of biochemistry, Besançon, France
| | - B Faucher
- Aix-Marseille University, UMR MD 3, Marseille, France
| | - F Grenouillet
- Centre National de Référence Echinococcose alvéolaire, Department of parasitology, CHRU Jean Minjoz Besançon, France
| | - J Knapp
- Centre National de Référence Echinococcose alvéolaire, Department of parasitology, CHRU Jean Minjoz Besançon, France
- WHO Collaborating Centre for Prevention and Treatment of Human Echinococcosis, University Hospital Jean Minjoz, Department of digestive surgery, Besançon, France
| | - J Dumortier
- University Hospital Edouard Herriot, Department of hepatogastroenterology, Hospices civils de Lyon, Lyon, France
| | - J Watelet
- University Hospital Brabois, Department of hepatogastroenterology, Nancy, France
| | - A Gerard
- University Hospital Brabois, Department of intensive care, Nancy, France
| | - J Beytout
- University Hospital G Montpied, Department of tropical medicine and infectious diseases, Clermont-Ferrand, France
| | - A Abergel
- University Hospital Estaing, Department of hepatogastroenterology, Clermont-Ferrand, France
| | - M Wallon
- University Hospital de la Croix Rousse, Institute of parasitology and medical mycology, Hospices civils de Lyon, Lyon, France
| | - D A Vuitton
- WHO Collaborating Centre for Prevention and Treatment of Human Echinococcosis, University Hospital Jean Minjoz, Department of digestive surgery, Besançon, France
- Franche-Comté University, CNRS UMR 6249, Besançon, France
| | - R Piarroux
- Aix-Marseille University, UMR MD 3, Marseille, France
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Knapp J, Bernhard M, Hofer S, Popp E, Weigand M. Update Intensivmedizin. Anaesthesist 2014; 63:429-38. [DOI: 10.1007/s00101-014-2321-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Umhang G, Knapp J, Hormaz V, Raoul F, Boué F. Using the genetics of Echinococcus multilocularis to trace the history of expansion from an endemic area. Infect Genet Evol 2014; 22:142-9. [PMID: 24468327 DOI: 10.1016/j.meegid.2014.01.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 01/07/2014] [Accepted: 01/15/2014] [Indexed: 11/28/2022]
Abstract
Alveolar echinococcosis, caused by the cestode Echinococcus multilocularis, is the most serious parasitic disease for humans in Europe, with a sylvatic life cycle generally between small rodents and red foxes. General expansion of the range of E. multilocularis has been observed across Europe over the last 15years. In France, a westward spread of the known endemic areas of the parasite was described recently. For genotyping, the microsatellite EmsB was used to trace expansion in five French areas. A total of 22 EmsB profiles were identified, with five similar to those previously described in other parts of Europe. An imbalance of genetic diversity was observed between the five areas which also revealed their interconnection with the presence of common profiles, notably the two main profiles both present in all regions except one in the North. These two findings are similar to those described at the European level, highlighting transmission of the parasite by a mainland-island system. A spatio-temporal scenario of the expansion of E. multilocularis can be proposed with spread from the French historical focus in eastern France to the Lorraine, the Champagne-Ardenne and finally the North, while simultaneously another expansion has occurred from the historical focus into the West. The colonization by the parasite into the West and North areas from the historical focus was probably due to the migration of foxes several decades ago. Recent detection of the parasite in new endemic "départements" may be due to more active research rather than a recent spread of the parasite. Regarding the numerous data obtained by the different EmsB analyses, principally across Europe, centralization of all the profiles described in a public databank appears necessary in order to obtain a precise understanding of transmission of the parasite from one country to another.
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Affiliation(s)
- G Umhang
- ANSES, Nancy Laboratory for Rabies and Wildlife, National Reference Laboratory for Echinococcus spp., Wildlife Eco-epidemiology and Surveillance Unit, 54220 Malzéville, France.
| | - J Knapp
- Chrono-environment Laboratory, UMR UFC/CNRS 6249 usc INRA, University of Franche-Comte, Place Leclerc, 25030 Besancon Cedex, France
| | - V Hormaz
- ANSES, Nancy Laboratory for Rabies and Wildlife, National Reference Laboratory for Echinococcus spp., Wildlife Eco-epidemiology and Surveillance Unit, 54220 Malzéville, France
| | - F Raoul
- Chrono-environment Laboratory, UMR UFC/CNRS 6249 usc INRA, University of Franche-Comte, Place Leclerc, 25030 Besancon Cedex, France
| | - F Boué
- ANSES, Nancy Laboratory for Rabies and Wildlife, National Reference Laboratory for Echinococcus spp., Wildlife Eco-epidemiology and Surveillance Unit, 54220 Malzéville, France
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Magwood AC, Malysewich MJ, Cealic I, Mundia MM, Knapp J, Baker MD. Endogenous levels of Rad51 and Brca2 are required for homologous recombination and regulated by homeostatic re-balancing. DNA Repair (Amst) 2013; 12:1122-33. [PMID: 24210700 DOI: 10.1016/j.dnarep.2013.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 10/15/2013] [Indexed: 12/17/2022]
Abstract
Stable expression of Rad51 siRNA was used to generate mouse hybridoma cell lines in which endogenous Rad51 levels were depleted by as much as 60%. Stable Rad51 knockdowns feature reduced homologous recombination responses. The relative ease with which stable Rad51 knockdowns were recovered was surprising, given the embryonic lethality of Rad51 ablation. Interestingly, Rad51-depleted hybridoma cell lines are characterized by reduced levels of p53 protein. Completely unexpected, was the finding that Rad51-depleted hybridoma cell lines are also reduced for the breast cancer susceptibility 2 (Brca2) protein. Additionally, hybridoma cell lines that are siRNA depleted for mouse Brca2 show a corresponding reduction in Rad51 and p53 proteins. Furthermore, cellular levels of Rad51, Brca2 and p53 can be elevated in these cell lines by ectopic expression of wild-type human Rad51 and wild-type human BRCA2. In marked contrast, hybridoma cell lines that are siRNA depleted for mouse p53 feature relatively normal Rad51 and Brca2 levels. These results suggest that cellular levels of Brca2 and Rad51 are mutually dependent on each other, and that low levels of these proteins provide selective pressure for reduction of p53, which permits cell growth.
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Affiliation(s)
- Alissa C Magwood
- Department of Molecular and Cellular Biology, College of Biological Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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Enemark HL, Al-Sabi MN, Knapp J, Staahl M, Chríel M. Detection of a high-endemic focus of Echinococcus multilocularis in red foxes in southern Denmark, January 2013. Euro Surveill 2013; 18:20420. [DOI: 10.2807/ese.18.10.20420-en] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- H L Enemark
- National Veterinary Institute, Technical University of Denmark, Frederiksberg, Denmark
| | - M N Al-Sabi
- National Veterinary Institute, Technical University of Denmark, Frederiksberg, Denmark
| | - J Knapp
- Laboratory of Chrono-environment, University of France-Comté, Besançon, France
| | - M Staahl
- National Veterinary Institute, Technical University of Denmark, Frederiksberg, Denmark
| | - M Chríel
- National Veterinary Institute, Technical University of Denmark, Frederiksberg, Denmark
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Abreu P, Aglietta M, Ahn EJ, Albuquerque IFM, Allard D, Allekotte I, Allen J, Allison P, Almeda A, Alvarez Castillo J, Alvarez-Muñiz J, Ambrosio M, Aminaei A, Anchordoqui L, Andringa S, Antičić T, Aramo C, Arganda E, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avenier M, Avila G, Bäcker T, Balzer M, Barber KB, Barbosa AF, Bardenet R, Barroso SLC, Baughman B, Bäuml J, Beatty JJ, Becker BR, Becker KH, Bellétoile A, Bellido JA, Benzvi S, Berat C, Bertou X, Biermann PL, Billoir P, Blanco F, Blanco M, Bleve C, Blümer H, Boháčová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brogueira P, Brown WC, Bruijn R, Buchholz P, Bueno A, Burton RE, Caballero-Mora KS, Caramete L, Caruso R, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Cheng SH, Chiavassa A, Chinellato JA, Chirinos Diaz J, Chudoba J, Clay RW, Coluccia MR, Conceição R, Contreras F, Cook H, Cooper MJ, Coppens J, Cordier A, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Dallier R, Dasso S, Daumiller K, Dawson BR, de Almeida RM, De Domenico M, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJM, de Mello Neto JRT, De Mitri I, de Souza V, de Vries KD, Decerprit G, del Peral L, del Río M, Deligny O, Dembinski H, Dhital N, Di Giulio C, Díaz Castro ML, Diep PN, Dobrigkeit C, Docters W, D'Olivo JC, Dong PN, Dorofeev A, dos Anjos JC, Dova MT, D'Urso D, Dutan I, Ebr J, Engel R, Erdmann M, Escobar CO, Espadanal J, Etchegoyen A, Facal San Luis P, Fajardo Tapia I, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferguson AP, Ferrero A, Fick B, Filevich A, Filipčič A, Fliescher S, Fracchiolla CE, Fraenkel ED, Fröhlich U, Fuchs B, Gaior R, Gamarra RF, Gambetta S, García B, Garcia-Gamez D, Garcia-Pinto D, Gascon A, Gemmeke H, Gesterling K, Ghia PL, Giaccari U, Giller M, Glass H, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gonçalves P, Gonzalez D, Gonzalez JG, Gookin B, Góra D, Gorgi A, Gouffon P, Gozzini SR, Grashorn E, Grebe S, Griffith N, Grigat M, Grillo AF, Guardincerri Y, Guarino F, Guedes GP, Guzman A, Hague JD, Hansen P, Harari D, Harmsma S, Harrison TA, Harton JL, Haungs A, Hebbeker T, Heck D, Herve AE, Hojvat C, Hollon N, Holmes VC, Homola P, Hörandel JR, Horneffer A, Horvath P, Hrabovský M, Huege T, Insolia A, Ionita F, Italiano A, Jarne C, Jiraskova S, Josebachuili M, Kadija K, Kampert KH, Karhan P, Kasper P, Kégl B, Keilhauer B, Keivani A, Kelley JL, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapp J, Koang DH, Kotera K, Krohm N, Krömer O, Kruppke-Hansen D, Kuehn F, Kuempel D, Kulbartz JK, Kunka N, La Rosa G, Lachaud C, Lauer R, Lautridou P, Le Coz S, Leão MSAB, Lebrun D, Lebrun P, Leigui de Oliveira MA, Lemiere A, Letessier-Selvon A, Lhenry-Yvon I, Link K, López R, Lopez Agüera A, Louedec K, Lozano Bahilo J, Lu L, Lucero A, Ludwig M, Lyberis H, Macolino C, Maldera S, Mandat D, Mantsch P, Mariazzi AG, Marin J, Marin V, Maris IC, Marquez Falcon HR, Marsella G, Martello D, Martin L, Martinez H, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, Medina-Tanco G, Melissas M, Melo D, Menichetti E, Menshikov A, Mertsch P, Meurer C, Mićanović S, Micheletti MI, Miller W, Miramonti L, Molina-Bueno L, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Moura CA, Mueller S, Muller MA, Müller G, Münchmeyer M, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Nelles A, Neuser J, Nhung PT, Niemietz L, Nierstenhoefer N, Nitz D, Nosek D, Nožka L, Nyklicek M, Oehlschläger J, Olinto A, Olmos-Gilbaja VM, Ortiz M, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Palmieri N, Parente G, Parizot E, Parra A, Parsons RD, Pastor S, Paul T, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petermann E, Petrera S, Petrinca P, Petrolini A, Petrov Y, Petrovic J, Pfendner C, Phan N, Piegaia R, Pierog T, Pieroni P, Pimenta M, Pirronello V, Platino M, Ponce VH, Pontz M, Privitera P, Prouza M, Quel EJ, Querchfeld S, Rautenberg J, Ravel O, Ravignani D, Revenu B, Ridky J, Riggi S, Risse M, Ristori P, Rivera H, Rizi V, Roberts J, Robledo C, Rodrigues de Carvalho W, Rodriguez G, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Rossler T, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Rühle C, Salamida F, Salazar H, Salesa Greus F, Salina G, Sánchez F, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar B, Sarkar S, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt A, Scholten O, Schoorlemmer H, Schovancova J, Schovánek P, Schröder F, Schulte S, Schuster D, Sciutto SJ, Scuderi M, Segreto A, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Sigl G, Silva Lopez HH, Smiałkowski A, Smída R, Snow GR, Sommers P, Sorokin J, Spinka H, Squartini R, Stanic S, Stapleton J, Stasielak J, Stephan M, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Suša T, Sutherland MS, Swain J, Szadkowski Z, Szuba M, Tamashiro A, Tapia A, Tartare M, Taşcău O, Tavera Ruiz CG, Tcaciuc R, Tegolo D, Thao NT, Thomas D, Tiffenberg J, Timmermans C, Tiwari DK, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Travnicek P, Tridapalli DB, Tristram G, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, Varela E, Vargas Cárdenas B, Vázquez JR, Vázquez RA, Veberič D, Verzi V, Vicha J, Videla M, Villaseñor L, Wahlberg H, Wahrlich P, Wainberg O, Walz D, Warner D, Watson AA, Weber M, Weidenhaupt K, Weindl A, Westerhoff S, Whelan BJ, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Will M, Williams C, Winchen T, Winnick MG, Wommer M, Wundheiler B, Yamamoto T, Yapici T, Younk P, Yuan G, Yushkov A, Zamorano B, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Zhu Y, Zimbres Silva M, Ziolkowski M. Measurement of the proton-air cross section at √s=57 TeV with the Pierre Auger Observatory. Phys Rev Lett 2012; 109:062002. [PMID: 23006259 DOI: 10.1103/physrevlett.109.062002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Indexed: 06/01/2023]
Abstract
We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505±22(stat)(-36)(+28)(syst)] mb is found.
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Affiliation(s)
- P Abreu
- LIP and Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal
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Knapp J, Staebler S, Bart J, Stien A, Yoccoz N, Drögemüller C, Gottstein B, Deplazes P. Echinococcus multilocularis in Svalbard, Norway: Microsatellite genotyping to investigate the origin of a highly focal contamination. Infection, Genetics and Evolution 2012; 12:1270-4. [DOI: 10.1016/j.meegid.2012.03.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 03/08/2012] [Accepted: 03/09/2012] [Indexed: 10/28/2022]
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Knapp J, Marx G, Weismüller K, Steinebach S, Lichtenstern C, Popp E, Mayer K, Brunkhorst FM, Weigand MA, Bernhard M. [Update: studies in intensive care medicine. Results of the last 12 months]. Anaesthesist 2012; 60:1041-56. [PMID: 22071875 PMCID: PMC7095879 DOI: 10.1007/s00101-011-1948-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Die Intensivmedizin spielt eine bedeutende Rolle sowohl für den medizinischen als auch den ökonomischen Erfolg eines Krankenhauses. Eine qualitativ hochwertige Intensivmedizin setzt die Kenntnis und die Umsetzung relevanter neuer klinischer Studien voraus. Die vorliegende Arbeit gibt einen Überblick über die wichtigsten intensivmedizinischen Publikationen des Jahres 2010 und der ersten Jahreshälfte von 2011 und ordnet diese im Hinblick auf die jeweilige klinische Relevanz ein. In den Jahren 2010 und 2011 sind zahlreiche randomisierte Studien veröffentlicht worden. Schwerpunkte waren die Therapie des Lungenversagens, die Analgosedierung und die Sepsistherapie.
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Affiliation(s)
- J Knapp
- Klinik für Anaesthesiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
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Abraham J, Abreu P, Aglietta M, Ahn EJ, Allard D, Allekotte I, Allen J, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anticić T, Anzalone A, Aramo C, Arganda E, Arisaka K, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Balzer M, Barber KB, Barbosa AF, Barroso SLC, Baughman B, Bauleo P, Beatty JJ, Becker BR, Becker KH, Bellétoile A, Bellido JA, Benzvi S, Berat C, Bergmann T, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blanco M, Bleve C, Blümer H, Bohácová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brogueira P, Brown WC, Bruijn R, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Caramete L, Caruso R, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chudoba J, Clay RW, Colombo E, Coluccia MR, Conceição R, Contreras F, Cook H, Cooper MJ, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Dallier R, Daumiller K, Dawson BR, de Almeida RM, De Domenico M, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJM, de Mello Neto JRT, De Mitri I, de Souza V, de Vries KD, Decerprit G, Del Peral L, Deligny O, Della Selva A, Delle Fratte C, Dembinski H, Di Giulio C, Diaz JC, Díaz Castro ML, Diep PN, Dobrigkeit C, D'Olivo JC, Dong PN, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Dutan I, Duvernois MA, Ebr J, Engel R, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrero A, Fick B, Filevich A, Filipcic A, Fleck I, Fliescher S, Fracchiolla CE, Fraenkel ED, Fröhlich U, Fulgione W, Gamarra RF, Gambetta S, García B, García Gámez D, Garcia-Pinto D, Garrido X, Gelmini G, Gemmeke H, Ghia PL, Giaccari U, Giller M, Glass H, Goggin LM, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gonçalves P, Gonzalez D, Gonzalez JG, Góra D, Gorgi A, Gouffon P, Gozzini SR, Grashorn E, Grebe S, Grigat M, Grillo AF, Guardincerri Y, Guarino F, Guedes GP, Hague JD, Halenka V, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hebbeker T, Heck D, Herve AE, Hojvat C, Holmes VC, Homola P, Hörandel JR, Horneffer A, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Jiraskova S, Kadija K, Kaducak M, Kampert KH, Karova T, Kasper P, Kégl B, Keilhauer B, Keivani A, Kelley J, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kruppke-Hansen D, Kuehn F, Kuempel D, Kulbartz K, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lautridou P, Leão MSAB, Lebrun D, Lebrun P, Lee J, Leigui de Oliveira MA, Lemiere A, Letessier-Selvon A, Lhenry-Yvon I, López R, Lopez Agüera A, Louedec K, Lozano Bahilo J, Lucero A, Ludwig M, Lyberis H, Maccarone MC, Macolino C, Maldera S, Mandat D, Mantsch P, Mariazzi AG, Marin V, Maris IC, Marquez Falcon HR, Marsella G, Martello D, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, McEwen M, Medina-Tanco G, Melissas M, Melo D, Menichetti E, Menshikov A, Meurer C, Micanović S, Micheletti MI, Miller W, Miramonti L, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Mueller S, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Nhung PT, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Nyklicek M, Oehlschläger J, Olinto A, Oliva P, Olmos-Gilbaja VM, Ortiz M, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Palmieri N, Parente G, Parizot E, Parlati S, Parra A, Parrisius J, Parsons RD, Pastor S, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petermann E, Petrera S, Petrinca P, Petrolini A, Petrov Y, Petrovic J, Pfendner C, Piegaia R, Pierog T, Pimenta M, Pirronello V, Platino M, Ponce VH, Pontz M, Privitera P, Prouza M, Quel EJ, Rautenberg J, Ravel O, Ravignani D, Redondo A, Revenu B, Rezende FAS, Ridky J, Riggi S, Risse M, Ristori P, Rivière C, Rizi V, Robledo C, Rodriguez G, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Rossler T, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar S, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schoorlemmer H, Schovancova J, Schovánek P, Schroeder F, Schulte S, Schüssler F, Schuster D, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Smiałkowski A, Smída R, Snow GR, Sommers P, Sorokin J, Spinka H, Squartini R, Stasielak J, Stephan M, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Susa T, Sutherland MS, Swain J, Szadkowski Z, Tamashiro A, Tamburro A, Tapia A, Tarutina T, Taşcău O, Tcaciuc R, Tcherniakhovski D, Tegolo D, Thao NT, Thomas D, Tiffenberg J, Timmermans C, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Travnicek P, Tridapalli DB, Tristram G, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, Vázquez JR, Vázquez RA, Veberic D, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wahrlich P, Wainberg O, Warner D, Watson AA, Westerhoff S, Whelan BJ, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Williams C, Winchen T, Winnick MG, Wundheiler B, Yamamoto T, Younk P, Yuan G, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Ziolkowski M. Measurement of the depth of maximum of extensive air showers above 10{18} eV. Phys Rev Lett 2010; 104:091101. [PMID: 20366976 DOI: 10.1103/physrevlett.104.091101] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Indexed: 05/29/2023]
Abstract
We describe the measurement of the depth of maximum, X{max}, of the longitudinal development of air showers induced by cosmic rays. Almost 4000 events above 10;{18} eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence with at least one surface detector station are selected for the analysis. The average shower maximum was found to evolve with energy at a rate of (106{-21}{+35}) g/cm{2}/decade below 10{18.24+/-0.05} eV, and (24+/-3) g/cm{2}/decade above this energy. The measured shower-to-shower fluctuations decrease from about 55 to 26 g/cm{2}. The interpretation of these results in terms of the cosmic ray mass composition is briefly discussed.
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Affiliation(s)
- J Abraham
- National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina
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Abstract
Aortic aneurysms are frequent in the elderly who often suffer from relevant co-morbidities. In Germany it is estimated that approximately 250,000 patients suffer from an aortic aneurysm. Due to the high risk of cardiac or pulmonary complications operative management poses a challenge to the anesthesiologist. Especially hemodynamic management during aortic cross-clamping requires anesthesiologic know-how and an anticipatory use of vasodilators and catecholamines. Furthermore, the anesthesiologist has to protect renal function. In order to avoid paraplegia due to spinal ischemia cerebrospinal fluid drainage may be necessary in patients with aneurysms of the thoracic aorta. In recent years endovascular repair of aortic aneurysms has been established in addition to conventional open surgery. As a consequence in some patients aortic surgery can be performed under regional or local anesthesia. In special cases thoracic endovascular repair requires a medicinal induction of heart arrest or the reduction of aortic blood flow by overpacing.
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Affiliation(s)
- J Knapp
- Klinik für Anaesthesiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland.
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Knapp J, Bernhard M, Hainer C, Sikinger M, Brenner T, Schlechtriemen T, Gries A. Besteht ein Zusammenhang zwischen der Einschätzung der Vitalgefährdung und der notfallmedizinischen Erfahrung des Notarztes? Anaesthesist 2008; 57:1069-74. [DOI: 10.1007/s00101-008-1454-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- J Knapp
- Sektion Notfallmedizin, Klinik für Anaesthesiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Deutschland.
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Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SLC, Baughman B, Bauleo P, Beatty JJ, Beau T, Becker BR, Becker KH, Bellido JA, Benzvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Bohácová M, Bonifazi C, Bonino R, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caramete L, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chudoba J, Chye J, Clark PDJ, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, Junior WJMDM, Neto JRTDM, De Mitri I, de Souza V, Del Peral L, Deligny O, Della Selva A, Fratte CD, Dembinski H, Di Giulio C, Diaz JC, Diep PN, Dobrigkeit C, D'Olivo JC, Dong PN, Dornic D, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Dutan I, Duvernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Luis PFS, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrer F, Ferrero A, Fick B, Filevich A, Filipcic A, Fleck I, Fracchiolla CE, Fulgione W, García B, Gámez DG, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Albarracin FG, Berisso MG, Gonçalves P, do Amaral MG, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo AF, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Halenka V, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker T, Hebrero G, Heck D, Hojvat C, Holmes VC, Homola P, Hörandel JR, Horneffer A, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Kaducak M, Kampert KH, Karova T, Kasper P, Kégl B, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kuempel D, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lebrun D, Lebrun P, Lee J, de Oliveira MAL, Letessier-Selvon A, Leuthold M, Lhenry-Yvon I, López R, Agüera AL, Bahilo JL, Lucero A, García RL, Maccarone MC, Macolino C, Maldera S, Mancarella G, Manceñido ME, Mandat D, Mantsch P, Mariazzi AG, Maris IC, Falcon HRM, Martello D, Martínez J, Bravo OM, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, McCauley T, McEwen M, McNeil RR, Medina MC, Medina-Tanco G, Melo D, Menichetti E, Menschikov A, Meurer C, Meyhandan R, Micheletti MI, Miele G, Miller W, Mollerach S, Monasor M, Ragaigne DM, Montanet F, Morales B, Morello C, Moreno JC, Morris C, Mostafá M, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Newman-Holmes C, Newton D, Nhung PT, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Oehlschläger J, Ohnuki T, Olinto A, Olmos-Gilbaja VM, Ortiz M, Ortolani F, Ostapchenko S, Otero L, Pacheco N, Selmi-Dei DP, Palatka M, Pallotta J, Parente G, Parizot E, Parlati S, Pastor S, Patel M, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petrera S, Petrinca P, Petrov Y, Pichel A, Piegaia R, Pierog T, Pimenta M, Pinto T, Pirronello V, Pisanti O, Platino M, Pochon J, Privitera P, Prouza M, Quel EJ, Rautenberg J, Redondo A, Reucroft S, Revenu B, Rezende FAS, Ridky J, Riggi S, Risse M, Rivière C, Rizi V, Roberts M, Robledo C, Rodriguez G, Martino JR, Rojo JR, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos EM, Sarazin F, Sarkar S, Sato R, Scherini V, Schieler H, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schovánek P, Schroeder F, Schulte S, Schüssler F, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Grande NSD, Smiałkowski A, Smída R, Smith AGK, Smith BE, Snow GR, Sokolsky P, Sommers P, Sorokin J, Spinka H, Squartini R, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Takahashi J, Tamashiro A, Tamburro A, Tarutina T, Taşcău O, Tcaciuc R, Thao NT, Thomas D, Ticona R, Tiffenberg J, Timmermans C, Tkaczyk W, Peixoto CJT, Tomé B, Tonachini A, Torres I, Travnicek P, Tripathi A, Tristram G, Tscherniakhovski D, Tuci V, Tueros M, Tunnicliffe V, Ulrich R, Unger M, Urban M, Galicia JFV, Valiño I, Valore L, van den Berg AM, van Elewyck V, Vázquez RA, Veberic D, Veiga A, Velarde A, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wahrlich P, Wainberg O, Walker P, Warner D, Watson AA, Westerhoff S, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Wileman C, Winnick MG, Wu H, Wundheiler B, Yamamoto T, Younk P, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Ziolkowski M. Observation of the suppression of the flux of cosmic rays above 4 x 10 (19) eV. Phys Rev Lett 2008; 101:061101. [PMID: 18764444 DOI: 10.1103/physrevlett.101.061101] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Indexed: 05/26/2023]
Abstract
The energy spectrum of cosmic rays above 2.5 x 10;{18} eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the particle flux, J proportional, variantE;{-gamma}, at energies between 4 x 10;{18} eV and 4 x 10;{19} eV is 2.69+/-0.02(stat)+/-0.06(syst), steepening to 4.2+/-0.4(stat)+/-0.06(syst) at higher energies. The hypothesis of a single power law is rejected with a significance greater than 6 standard deviations. The data are consistent with the prediction by Greisen and by Zatsepin and Kuz'min.
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Affiliation(s)
- J Abraham
- Universidad Tecnológica Nacional, FR-Mendoza, Argentina
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Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SLC, Bauleo P, Beatty JJ, Beau T, Becker BR, Becker KH, Bellido JA, BenZvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Bohácová M, Bonifazi C, Bonino R, Boratav M, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caramete L, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chye J, Clark PDJ, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJM, de Mello Neto JRT, DeMitri I, de Souza V, del Peral L, Deligny O, Della Selva A, Delle Fratte C, Dembinski H, Di Giulio C, Diaz JC, Dobrigkeit C, D'Olivo JC, Dornic D, Dorofeev A, dos Anjos JC, Dova MT, D'Urso D, Dutan I, DuVernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrer F, Ferry S, Fick B, Filevich A, Filipcic A, Fleck I, Fonte R, Fracchiolla CE, Fulgione W, García B, García Gámez D, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gómez Herrero R, Gonçalves P, Gonçalves do Amaral M, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo AF, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker T, Hebrero G, Heck D, Hojvat C, Holmes VC, Homola P, Hörandel J, Horneffer A, Horvat M, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Kaducak M, Kampert KH, Karova T, Kégl B, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kuempel D, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lebrun D, Lebrun P, Lee J, Leigui de Oliveira MA, Letessier-Selvon A, Leuthold M, Lhenry-Yvon I, López R, Lopez Agüera A, Lozano Bahilo J, Luna García R, Maccarone MC, Macolino C, Maldera S, Mancarella G, Manceñido ME, Mandat D, Mantsch P, Mariazzi AG, Maris IC, Marquez Falcon HR, Martello D, Martínez J, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, McCauley T, McEwen M, McNeil RR, Medina MC, Medina-Tanco G, Meli A, Melo D, Menichetti E, Menschikov A, Meurer C, Meyhandan R, Micheletti MI, Miele G, Miller W, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno JC, Morris C, Mostafá M, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Newman-Holmes C, Newton D, Nguyen Thi T, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Oehlschläger J, Ohnuki T, Olinto A, Olmos-Gilbaja VM, Ortiz M, Ortolani F, Ostapchenko S, Otero L, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Parente G, Parizot E, Parlati S, Pastor S, Patel M, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Petrera S, Petrinca P, Petrov Y, Pham Ngoc D, Pham Ngoc D, Pham Thi TN, Pichel A, Piegaia R, Pierog T, Pimenta M, Pinto T, Pirronello V, Pisanti O, Platino M, Pochon J, Privitera P, Prouza M, Quel EJ, Rautenberg J, Redondo A, Reucroft S, Revenu B, Rezende FAS, Ridky J, Riggi S, Risse M, Rivière C, Rizi V, Roberts M, Robledo C, Rodriguez G, Rodríguez Frías D, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Ros G, Rosado J, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos EM, Sarazin F, Sarkar S, Sato R, Scherini V, Schieler H, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schovánek P, Schüssler F, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Smetniansky De Grande N, Smiałkowski A, Smída R, Smith AGK, Smith BE, Snow GR, Sokolsky P, Sommers P, Sorokin J, Spinka H, Squartini R, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Takahashi J, Tamashiro A, Tamburro A, Taşcău O, Tcaciuc R, Thomas D, Ticona R, Tiffenberg J, Timmermans C, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Torres I, Torresi D, Travnicek P, Tripathi A, Tristram G, Tscherniakhovski D, Tueros M, Tunnicliffe V, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, van Elewyck V, Vázquez RA, Veberic D, Veiga A, Velarde A, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wainberg O, Walker P, Warner D, Watson AA, Westerhoff S, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Wileman C, Winnick MG, Wu H, Wundheiler B, Yamamoto T, Younk P, Zas E, Zavrtanik D, Zavrtanik M, Zech A, Zepeda A, Ziolkowski M. Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory. Phys Rev Lett 2008; 100:211101. [PMID: 18518595 DOI: 10.1103/physrevlett.100.211101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Indexed: 05/26/2023]
Abstract
The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth's crust. Tau leptons from nu(tau) charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic component. The data collected between 1 January 2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of nu(tau) at EeV energies. Assuming an E(nu)(-2) differential energy spectrum the limit set at 90% C.L. is E(nu)(2)dN(nu)(tau)/dE(nu)<1.3 x 10(-7) GeV cm(-2) s(-1) sr(-1) in the energy range 2 x 10(17) eV< E(nu)< 2 x 10(19) eV.
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Affiliation(s)
- J Abraham
- Centro de Investigaciones en Laseres y Aplicaciones, CITEFA and CONICET, Argentina
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Abstract
The granularity and interpretability of a fuzzy model are influenced by the method used to construct the rule base. Models obtained by a heuristic assessment of the underlying system are generally highly granular with interpretable rules, while models algorithmically generated from an analysis of training data consist of a large number of rules with small granularity. This paper presents a method for increasing the granularity of rules while satisfying a prescribed precision bound on the training data. The model is generated by a two-stage process. The first step iteratively refines the partitions of the input domains until a rule base is generated that satisfies the precision bound. In this step, the antecedents of the rules are obtained from decomposable partitions of the input domains and the consequents are generated using proximity techniques. A greedy merging algorithm is then applied to increase the granularity of the rules while preserving the precision bound. To enhance the representational capabilities of a rule and reduce the number of rules required, the rules constructed by the merging procedure have multi-dimensional antecedents. A model defined with rules of this form incorporates advantageous features of both clustering and proximity methods for rule generation. Experimental results demonstrate the ability of the algorithm to reduce the number of rules in a fuzzy model with both precise and imprecise training information.
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Affiliation(s)
- T Sudkamp
- Dept. of Comput. Sci., Wright State Univ., Dayton, OH, USA
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Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez C, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SLC, Bauleo P, Beatty J, Beau T, Becker BR, Becker KH, Bellido JA, BenZvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Boháčová M, Bonifazi C, Bonino R, Boratav M, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazón-Boado L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chye J, Clark PDJ, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Cronin J, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJM, de Mello Neto JRT, De Mitri I, de Souza V, del Peral L, Deligny O, Selva AD, Fratte CD, Dembinski H, Di Giulio C, Diaz JC, Dobrigkeit C, D'Olivo JC, Dornic D, Dorofeev A, Anjos JCD, Dova MT, D'Urso D, DuVernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Luis PFS, Falcke H, Farrar G, Fauth AC, Fazzini N, Fernández A, Ferrer F, Ferry S, Fick B, Filevich A, Filipčič A, Fleck I, Fonte R, Fracchiolla CE, Fulgione W, García B, García Gámez D, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Albarracin FG, Berisso MG, Herrero RG, Gonçalves P, do Amaral MG, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo A, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker T, Heck D, Hojvat C, Holmes VC, Homola P, Hörandel J, Horneffer A, Horvat M, Hrabovský M, Huege T, Iarlori M, Insolia A, Ionita F, Italiano A, Kaducak M, Kampert KH, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Kopmann A, Krieger A, Krömer O, Kümpel D, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lebrun D, LeBrun P, Lee J, de Oliveira MAL, Letessier-Selvon A, Leuthold M, Lhenry-Yvon I, López R, Lopez Agüera A, Bahilo JL, Maccarone MC, Macolino C, Maldera S, Malek M, Mancarella G, Manceñido ME, Mandat D, Mantsch P, Mariazzi AG, Maris IC, Martello D, Martínez J, Bravo OM, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, McCauley T, McEwen M, McNeil RR, Medina MC, Medina-Tanco G, Meli A, Melo D, Menichetti E, Menschikov A, Meurer C, Meyhandan R, Micheletti MI, Miele G, Miller W, Mollerach S, Monasor M, Ragaigne DM, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Nellen L, Newman-Holmes C, Newton D, Thi TN, Nierstenhöfer N, Nitz D, Nosek D, Nožka L, Oehlschläger J, Ohnuki T, Olinto A, Olmos-Gilbaja VM, Ortiz M, Ostapchenko S, Otero L, Selmi-Dei DP, Palatka M, Pallotta J, Parente G, Parizot E, Parlati S, Pastor S, Patel M, Paul T, Pavlidou V, Payet K, Pech M, Pȩkala J, Pelayo R, Pepe IM, Perrone L, Petrera S, Petrinca P, Petrov Y, Ngoc D, Ngoc D, Thi TNP, Pichel A, Piegaia R, Pierog T, Pimenta M, Pinto T, Pirronello V, Pisanti O, Platino M, Pochon J, Porter TA, Privitera P, Prouza M, Quel EJ, Rautenberg J, Reucroft S, Revenu B, Rezende FAS, Řídký J, Riggi S, Risse M, Rivière C, Rizi V, Roberts M, Robledo C, Rodriguez G, Frías DR, Martino JR, Rojo JR, Rodriguez-Cabo I, Ros G, Rosado J, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos EM, Sarazin F, Sarkar S, Sato R, Scherini V, Schieler H, Schmidt F, Schmidt T, Scholten O, Schovánek P, Schüssler F, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shellard RC, Sidelnik I, Siffert BB, Sigl G, De Grande NS, Smiałkowski A, šmída R, Smith AGK, Smith BE, Snow GR, Sokolsky P, Sommers P, Sorokin J, Spinka H, Squartini R, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Takahashi J, Tamashiro A, Tamburro A, Taşcău O, Tcaciuc R, Thomas D, Ticona R, Tiffenberg J, Timmermans C, Tkaczyk W, Peixoto CJT, Tomé B, Tonachini A, Torresi D, Travnicek P, Tripathi A, Tristram G, Tscherniakhovski D, Tueros M, Tunnicliffe V, Ulrich R, Unger M, Urban M, Galicia JFV, Valiño I, Valore L, van den Berg AM, van Elewyck V, Vázquez RA, Veberič D, Veiga A, Velarde A, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wainberg O, Waldenmaier T, Walker P, Warner D, Watson AA, Westerhoff S, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Wileman C, Winnick MG, Wu H, Wundheiler B, Xu J, Yamamoto T, Younk P, Zas E, Zavrtanik D, Zavrtanik M, Zech A, Zepeda A, Ziolkowski M. Correlation of the Highest-Energy Cosmic Rays with Nearby Extragalactic Objects. Science 2007; 318:938-43. [DOI: 10.1126/science.1151124] [Citation(s) in RCA: 560] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Knapp J, Bart JM, Glowatzki ML, Ito A, Gerard S, Maillard S, Piarroux R, Gottstein B. Assessment of use of microsatellite polymorphism analysis for improving spatial distribution tracking of echinococcus multilocularis. J Clin Microbiol 2007; 45:2943-50. [PMID: 17634311 PMCID: PMC2045259 DOI: 10.1128/jcm.02107-06] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Alveolar echinococcosis (AE)--caused by the cestode Echinococcus multilocularis--is a severe zoonotic disease found in temperate and arctic regions of the northern hemisphere. Even though the transmission patterns observed in different geographical areas are heterogeneous, the nuclear and mitochondrial targets usually used for the genotyping of E. multilocularis have shown only a marked genetic homogeneity in this species. We used microsatellite sequences, because of their high typing resolution, to explore the genetic diversity of E. multilocularis. Four microsatellite targets (EmsJ, EmsK, and EmsB, which were designed in our laboratory, and NAK1, selected from the literature) were tested on a panel of 76 E. multilocularis samples (larval and adult stages) obtained from Alaska, Canada, Europe, and Asia. Genetic diversity for each target was assessed by size polymorphism analysis. With the EmsJ and EmsK targets, two alleles were found for each locus, yielding two and three genotypes, respectively, discriminating European isolates from the other groups. With NAK1, five alleles were found, yielding seven genotypes, including those specific to Tibetan and Alaskan isolates. The EmsB target, a tandem repeated multilocus microsatellite, found 17 alleles showing a complex pattern. Hierarchical clustering analyses were performed with the EmsB findings, and 29 genotypes were identified. Due to its higher genetic polymorphism, EmsB exhibited a higher discriminatory power than the other targets. The complex EmsB pattern was able to discriminate isolates on a regional and sectoral level, while avoiding overdistinction. EmsB will be used to assess the putative emergence of E. multilocularis in Europe.
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Affiliation(s)
- J Knapp
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.
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50
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Maillard S, Benchikh-Elfegoun MC, Knapp J, Bart JM, Koskei P, Gottstein B, Piarroux R. Taxonomic position and geographical distribution of the common sheep G1 and camel G6 strains of Echinococcus granulosus in three African countries. Parasitol Res 2006; 100:495-503. [PMID: 17016727 DOI: 10.1007/s00436-006-0286-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2006] [Accepted: 07/11/2006] [Indexed: 10/24/2022]
Abstract
The taxonomic and phylogenetic status of Echinococcus granulosus strains are still controversial and under discussion. In the present study, we investigated the genetic polymorphism of E. granulosus isolates originating from three countries of Africa, including a region of Algeria, where the common G1 sheep and the camel G6 strains coexist sympatrically. Seventy-one hydatid cysts were collected from sheep, cattle, camels, and humans. Two mitochondrial markers (cox1 and nad1) were used for strain identification. Two nuclear markers (actII and hbx2) were used to study the possible occurrence of cross-fertilization. Despite the heterogeneity observed among the G1 isolates, they were all localized within one robust cluster. A second strong cluster was also observed containing all of the G6 isolates. Both strains appeared as two distinct groups, and no cases of interbreeding were found. Thus, the attribution of a species rank can be suggested. We also found the Tasmanian sheep G2 strain for the first time in Africa. Because of the slight variations observed between the common sheep and the Tasmanian sheep strains, further studies should be carried out to elucidate the epidemiological relevance of this genetic discrimination.
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Affiliation(s)
- S Maillard
- SERF, Santé Environnement Rural-Université de Franche-Comté, Parasitology Department, University of Franche-Comté, Besancon, France.
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