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Eriksson J, Denwood M, Nielsen SS, McEvoy F, Allberg C, Thuesen IS, Kortegaard H. Accuracy of three diagnostic tests to detect tooth resorption in unowned unsocialised cats in Denmark. J Small Anim Pract 2024. [PMID: 38234230 DOI: 10.1111/jsap.13703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 09/14/2023] [Accepted: 01/01/2024] [Indexed: 01/19/2024]
Abstract
OBJECTIVES To estimate the relative diagnostic sensitivity and specificity of oral clinical examination, full-mouth dental radiography, and cone-beam CT for the detection of tooth resorption in cats, and to estimate the prevalence of tooth resorption in unowned, unsocialised cats in Denmark. MATERIALS AND METHODS Cadavers of 144 adult cats underwent an oral examination, full-mouth dental radiography, and cone-beam CT. Sensitivity and specificity of the three tests, along with the true prevalence, overall and stratified by sex and tooth location, were estimated using latent class methods. RESULTS We found cone-beam CT to be the superior image modality, with a sensitivity of 99.5% and a specificity of 99.8%. Dental radiography had a sensitivity of 78.9% and a specificity of 100%, and oral clinical examination had a sensitivity of only 36.0% and specificity of 99.9%. We estimated the prevalence of tooth resorption among unowned unsocialised cats in Denmark to be 40% of adult individuals, and 6.1% of teeth. CLINICAL SIGNIFICANCE When dealing with tooth resorption, cone-beam CT can help the operator to find and treat affected teeth that could otherwise go undiagnosed. The prevalence of tooth resorption among unowned, unsocialised cats in Denmark does not appear to differ from other populations of cats.
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Affiliation(s)
- J Eriksson
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - M Denwood
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - S S Nielsen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - F McEvoy
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - C Allberg
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - I S Thuesen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - H Kortegaard
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
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2
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Eikemo R, Barimani M, Elvin-Nowak Y, Eriksson J, Vikström A, Nyman V, Backman-Enelius M, Jonas W. Intimate partner violence during pregnancy - Prevalence and associations with women's health: A cross-sectional study. Sex Reprod Healthc 2023; 36:100843. [PMID: 37062226 DOI: 10.1016/j.srhc.2023.100843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 03/15/2023] [Accepted: 03/28/2023] [Indexed: 04/18/2023]
Abstract
OBJECTIVE Intimate partner violence (IPV) against women occurs in all settings. Exposure to intimate partner violence, especially during pregnancy, is associated with serious adverse health outcomes and is recognized as a global health issue. AIM To describe the prevalence of physical, psychological, and sexual intimate partner violence among pregnant women in Sweden during current pregnancy, and to investigate potential associations between exposure and sociodemographic characteristics and health. METHODS Between October and December 2020, a cross-sectional survey study was conducted at 35 midwifery clinics in Stockholm, Sweden. RESULTS The questionnaire was answered by 3399 pregnant women. The results showed that 2.1% of the women reported exposure to intimate partner violence during pregnancy, with exposure to psychological violence being most common (1.8%), followed by exposure to physical violence (0.6%) and sexual violence (0.1%). Exposure to intimate partner violence was significantly associated with living situation and depressive symptoms, as well as education, country of birth, and employment status. CONCLUSION Exposure to intimate partner violence occurs even during pregnancy and it is crucial to identify pregnant women exposed to intimate partner violence in order to inform clinical practice and to provide adequate support. More research is needed to develop screening instruments to detect violence against pregnant women.
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Affiliation(s)
- R Eikemo
- Academic Primary Care Centre, Region Stockholm, Sweden; Department of Neurobiology, Care Sciences and Society, Division of Family Medicine and Primary Care, Karolinska Institute, Stockholm, Sweden.
| | - M Barimani
- Academic Primary Care Centre, Region Stockholm, Sweden; Department of Medical and Health Sciences, Linköping University, Sweden.
| | - Y Elvin-Nowak
- Academic Primary Care Centre, Region Stockholm, Sweden.
| | - J Eriksson
- Department of Environmental Medicine, Division of Biostatistics, Karolinska Institute, Stockholm, Sweden.
| | - A Vikström
- Department of Neurobiology, Care Sciences and Society, Division of Family Medicine and Primary Care, Karolinska Institute, Stockholm, Sweden.
| | - V Nyman
- Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden.
| | | | - W Jonas
- Departement of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.
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3
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Riva A, Eriksson J, Viola F, Sturla F, Votta E, Ebbers T, Carlhäll CJG, Dyverfeldt P. Impact of dobutamine stress on diastolic energetic efficiency of healthy left ventricle: an in vivo kinetic energy analysis. Front Cardiovasc Med 2023; 10:1103751. [PMID: 37025678 PMCID: PMC10071008 DOI: 10.3389/fcvm.2023.1103751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 02/28/2023] [Indexed: 04/08/2023] Open
Abstract
The total kinetic energy (KE) of blood can be decomposed into mean KE (MKE) and turbulent KE (TKE), which are associated with the phase-averaged fluid velocity field and the instantaneous velocity fluctuations, respectively. The aim of this study was to explore the effects of pharmacologically induced stress on MKE and TKE in the left ventricle (LV) in a cohort of healthy volunteers. 4D Flow MRI data were acquired in eleven subjects at rest and after dobutamine infusion, at a heart rate that was ∼60% higher than the one in rest conditions. MKE and TKE were computed as volume integrals over the whole LV and as data mapped to functional LV flow components, i.e., direct flow, retained inflow, delayed ejection flow and residual volume. Diastolic MKE and TKE increased under stress, in particular at peak early filling and peak atrial contraction. Augmented LV inotropy and cardiac frequency also caused an increase in direct flow and retained inflow MKE and TKE. However, the TKE/KE ratio remained comparable between rest and stress conditions, suggesting that LV intracavitary fluid dynamics can adapt to stress conditions without altering the TKE to KE balance of the normal left ventricle at rest.
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Affiliation(s)
- Alessandra Riva
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
- 3D and Computer Simulation Laboratory, IRCCS, Policlinico San Donato, San Donato Milanese, Italy
- Correspondence: Alessandra Riva
| | - Jonatan Eriksson
- Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden
- Department of Medical Radiation Physics and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Federica Viola
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Francesco Sturla
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
- 3D and Computer Simulation Laboratory, IRCCS, Policlinico San Donato, San Donato Milanese, Italy
| | - Emiliano Votta
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
- 3D and Computer Simulation Laboratory, IRCCS, Policlinico San Donato, San Donato Milanese, Italy
| | - Tino Ebbers
- Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Carl-Johan Gustav Carlhäll
- Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Physiology in Linköping, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Petter Dyverfeldt
- Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
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Eriksson J, Gonzalez V, Laxander K, Bergkvist L, Eriksson S. Preoperative MRI in women with newly diagnosed breast cancer: re-excision rates and additional findings. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01432-0] [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: 11/19/2022]
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Marcinkevicius B, Eriksson J, Hjalmarsson A, Conroy S, Ericsson G. Fuel ion ratio determination using the 14 MeV Tandem neutron spectrometer for JET DTE1 campaign discharges. Fusion Engineering and Design 2022. [DOI: 10.1016/j.fusengdes.2022.113259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nocente M, Kiptily V, Tardocchi M, Bonofiglo PJ, Craciunescu T, Molin AD, De La Luna E, Eriksson J, Garcia J, Ghani Z, Gorini G, Hägg L, Kazakov Y, Lerche E, Maggi CF, Mantica P, Marcer G, Maslov M, Putignano O, Rigamonti D, Salewski M, Sharapov S, Siren P, Stancar Z, Zohar A, Beaumont P, Crombe K, Ericsson G, Garcia-Munoz M, Keeling D, King D, Kirov K, Nave MFF, Ongena J, Patel A, Perez von Thun C. Fusion product measurements by nuclear diagnostics in the Joint European Torus deuterium-tritium 2 campaign (invited). Rev Sci Instrum 2022; 93:093520. [PMID: 36182523 DOI: 10.1063/5.0101767] [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: 06/03/2022] [Accepted: 08/20/2022] [Indexed: 06/16/2023]
Abstract
A new deuterium-tritium experimental, DTE2, campaign has been conducted at the Joint European Torus (JET) between August 2021 and late December 2021. Motivated by significant enhancements in the past decade at JET, such as the ITER-like wall and enhanced auxiliary heating power, the campaign achieved a new fusion energy world record and performed a broad range of fundamental experiments to inform ITER physics scenarios and operations. New capabilities in the area of fusion product measurements by nuclear diagnostics were available as a result of a decade long enhancement program. These have been tested for the first time in DTE2 and a concise overview is provided here. Confined alpha particle measurements by gamma-ray spectroscopy were successfully demonstrated, albeit with limitations at neutron rates higher than some 1017 n/s. High resolution neutron spectroscopy measurements with the magnetic proton recoil instrument were complemented by novel data from a set of synthetic diamond detectors, which enabled studies of the supra-thermal contributions to the neutron emission. In the area of escaping fast ion diagnostics, a lost fast ion detector and a set of Faraday cups made it possible to determine information on the velocity space and poloidal distribution of the lost alpha particles for the first time. This extensive set of data provides unique information for fundamental physics studies and validation of the numerical models, which are key to inform the physics and scenarios of ITER.
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Affiliation(s)
- M Nocente
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - V Kiptily
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - M Tardocchi
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - P J Bonofiglo
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA
| | - T Craciunescu
- Institute of Atomic Physics, Magurele-Bucharest 077125, Romania
| | - A Dal Molin
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - E De La Luna
- Laboratorio Nacional de Fusión, CIEMAT, Madrid 28040, Spain
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - J Garcia
- CEA, IRFM, Saint Paul lez Durance 13115, France
| | - Z Ghani
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - G Gorini
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - L Hägg
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - Y Kazakov
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - E Lerche
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - C F Maggi
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - P Mantica
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - G Marcer
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - M Maslov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - O Putignano
- Department of Physics, University of Milano-Bicocca, Milan 20126, Italy
| | - D Rigamonti
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - M Salewski
- Department of Physics, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
| | - S Sharapov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - P Siren
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - Z Stancar
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - A Zohar
- Jožef Stefan Institute, Ljubljana 1000, Slovenia
| | - P Beaumont
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - K Crombe
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - G Ericsson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
| | - M Garcia-Munoz
- Department of Atomic, Molecular and Nuclear Physics, University of Seville, Seville 41012, Spain
| | - D Keeling
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - D King
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - K Kirov
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - M F F Nave
- Instituto de Plasmas e Fusao Nuclear, IST, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - J Ongena
- Laboratory for Plasma Physics, LPP ERM/KMS, Brussels 1000, Belgium
| | - A Patel
- United Kingdom Atomic Energy Authority, Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - C Perez von Thun
- Institute of Plasma Physics and Laser Microfusion, Warsaw 01-497, Poland
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Fontan A, Lindgren L, Pedale T, Brorsson C, Bergström F, Eriksson J. A reduced level of consciousness affects non-conscious processes. Neuroimage 2021; 244:118571. [PMID: 34509624 DOI: 10.1016/j.neuroimage.2021.118571] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 11/28/2022] Open
Abstract
Being conscious is a profound aspect of human existence, and understanding its function and its inception is considered one of the truly grand scientific challenges. However, the nature of consciousness remains enigmatic, to a large part because "being conscious" can refer to both the content (phenomenology) and the level (arousal) of consciousness, and how these different aspects are related remains unclear. To empirically assess the relation between level and content of consciousness, we manipulated these two aspects by presenting stimuli consciously or non-consciously and by using Propofol sedation, while brain activity was measured using fMRI. We observed that sedation affected both conscious and non-conscious processes but at different hierarchical levels; while conscious processing was altered in higher-order regions (the intraparietal sulcus) and spared sensory areas, the opposite effect was observed for non-conscious processing. The observation that Propofol affected non-conscious processing calls for a reconsideration of what kind of information one can gain on "consciousness" from recording neural responses to sedation without considering both (content) conscious and (content) non-conscious processing.
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Affiliation(s)
- A Fontan
- Department of Integrative medical biology, Umeå Center for Functional Brain Imaging, Umeå University, Sweden
| | - L Lindgren
- Department of Nursing, Umeå University, Umeå, Sweden
| | - T Pedale
- Department of Integrative medical biology, Umeå Center for Functional Brain Imaging, Umeå University, Sweden
| | - C Brorsson
- Department of Anaesthesia and Intensive Care, Department of Surgery and Perioperative Sciences, Umeå University, Sweden
| | - F Bergström
- Faculty of Psychology and Educational Sciences, University of Coimbra, Portugal
| | - J Eriksson
- Department of Integrative medical biology, Umeå Center for Functional Brain Imaging, Umeå University, Sweden.
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8
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Kabadi NV, Simpson R, Adrian PJ, Bose A, Frenje JA, Gatu Johnson M, Lahmann B, Li CK, Parker CE, Séguin FH, Sutcliffe GD, Petrasso RD, Atzeni S, Eriksson J, Forrest C, Fess S, Glebov VY, Janezic R, Mannion OM, Rinderknecht HG, Rosenberg MJ, Stoeckl C, Kagan G, Hoppe M, Luo R, Schoff M, Shuldberg C, Sio HW, Sanchez J, Hopkins LB, Schlossberg D, Hahn K, Yeamans C. Thermal decoupling of deuterium and tritium during the inertial confinement fusion shock-convergence phase. Phys Rev E 2021; 104:L013201. [PMID: 34412205 DOI: 10.1103/physreve.104.l013201] [Citation(s) in RCA: 4] [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] [Received: 01/19/2021] [Accepted: 06/23/2021] [Indexed: 11/07/2022]
Abstract
A series of thin glass-shell shock-driven DT gas-filled capsule implosions was conducted at the OMEGA laser facility. These experiments generate conditions relevant to the central plasma during the shock-convergence phase of ablatively driven inertial confinement fusion (ICF) implosions. The spectral temperatures inferred from the DTn and DDn spectra are most consistent with a two-ion-temperature plasma, where the initial apparent temperature ratio, T_{T}/T_{D}, is 1.5. This is an experimental confirmation of the long-standing conjecture that plasma shocks couple energy directly proportional to the species mass in multi-ion plasmas. The apparent temperature ratio trend with equilibration time matches expected thermal equilibration described by hydrodynamic theory. This indicates that deuterium and tritium ions have different energy distributions for the time period surrounding shock convergence in ignition-relevant ICF implosions.
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Affiliation(s)
- N V Kabadi
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - R Simpson
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - P J Adrian
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - A Bose
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - J A Frenje
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - B Lahmann
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C K Li
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C E Parker
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - F H Séguin
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - G D Sutcliffe
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - R D Petrasso
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - S Atzeni
- Dipartimento SBAI, Universit'a degli Studi di Roma "La Sapienza," Via Antonio Scarpa 14, 00161, Roma, Italy
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, SE-752 37 Uppsala, Sweden
| | - C Forrest
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - S Fess
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - V Yu Glebov
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - R Janezic
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - O M Mannion
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - H G Rinderknecht
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - M J Rosenberg
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - C Stoeckl
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - G Kagan
- Centre for Inertial Fusion Studies, The Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom
| | - M Hoppe
- General Atomics, San Diego, California 92121, USA
| | - R Luo
- General Atomics, San Diego, California 92121, USA
| | - M Schoff
- General Atomics, San Diego, California 92121, USA
| | - C Shuldberg
- General Atomics, San Diego, California 92121, USA
| | - H W Sio
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Sanchez
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - L Berzak Hopkins
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D Schlossberg
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - K Hahn
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - C Yeamans
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Sahlberg A, Eriksson J, Conroy S, Ericsson G, Hägg L, Giacomelli L, Belli F. Forward modeling of pile-up events in liquid scintillator detectors for neutron emission spectroscopy. Rev Sci Instrum 2021; 92:083502. [PMID: 34470438 DOI: 10.1063/5.0052260] [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: 03/30/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
When using liquid scintillator detectors to measure the neutron emission spectrum from fusion plasmas, the problem of pile-up distortion can be significant. Because of the large neutron rates encountered in many fusion experiments, some pile-up distortion can remain even after applying traditional pile-up elimination methods, which alters the shape of the measured light-yield spectrum and influences the spectroscopic analysis. Particularly, pile-up events appear as a high-energy tail in the measured light-yield spectrum, which obfuscates the contribution that supra-thermal ions make to the energy spectrum. It is important to understand the behavior of such "fast ions" in fusion plasmas, and it is hence desirable to be able to measure their contribution to the neutron spectrum as accurately as possible. This paper presents a technique for incorporating distortion from undetected pile-up events into the analysis of the light-yield spectrum, hence compensating for pile-up distortion. The spectral contribution from undetected pile-up events is determined using Monte Carlo methods and is included in the spectroscopic study as a pile-up component. The method is applied to data from an NE213 scintillator detector at JET and validated by comparing with results from the time-of-flight spectrometer TOFOR, which is not susceptible to pile-up distortion. Based on the results, we conclude that the suggested analysis method helps counteract the problem of pile-up effects and improves the possibilities for extracting accurate fast-ion information from the light-yield spectrum.
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Affiliation(s)
- A Sahlberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - S Conroy
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - G Ericsson
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - L Hägg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - L Giacomelli
- Istituto per la Scienza e la Tecnologia dei Plasmi, Consiglio Nazionale delle Ricerche, 20125 Milano, Italy
| | - F Belli
- ENEA C. R. Frascati, Dipartimento FSN, via E. Fermi 45, 00044 Frascati (Roma), Italy
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Betancourt LH, Gil J, Sanchez A, Doma V, Kuras M, Murillo JR, Velasquez E, Çakır U, Kim Y, Sugihara Y, Parada IP, Szeitz B, Appelqvist R, Wieslander E, Welinder C, de Almeida NP, Woldmar N, Marko‐Varga M, Eriksson J, Pawłowski K, Baldetorp B, Ingvar C, Olsson H, Lundgren L, Lindberg H, Oskolas H, Lee B, Berge E, Sjögren M, Eriksson C, Kim D, Kwon HJ, Knudsen B, Rezeli M, Malm J, Hong R, Horvath P, Szász AM, Tímár J, Kárpáti S, Horvatovich P, Miliotis T, Nishimura T, Kato H, Steinfelder E, Oppermann M, Miller K, Florindi F, Zhou Q, Domont GB, Pizzatti L, Nogueira FCS, Szadai L, Németh IB, Ekedahl H, Fenyö D, Marko‐Varga G. The Human Melanoma Proteome Atlas-Complementing the melanoma transcriptome. Clin Transl Med 2021; 11:e451. [PMID: 34323402 PMCID: PMC8299047 DOI: 10.1002/ctm2.451] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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] [Received: 03/12/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/12/2022] Open
Abstract
The MM500 meta-study aims to establish a knowledge basis of the tumor proteome to serve as a complement to genome and transcriptome studies. Somatic mutations and their effect on the transcriptome have been extensively characterized in melanoma. However, the effects of these genetic changes on the proteomic landscape and the impact on cellular processes in melanoma remain poorly understood. In this study, the quantitative mass-spectrometry-based proteomic analysis is interfaced with pathological tumor characterization, and associated with clinical data. The melanoma proteome landscape, obtained by the analysis of 505 well-annotated melanoma tumor samples, is defined based on almost 16 000 proteins, including mutated proteoforms of driver genes. More than 50 million MS/MS spectra were analyzed, resulting in approximately 13,6 million peptide spectrum matches (PSMs). Altogether 13 176 protein-coding genes, represented by 366 172 peptides, in addition to 52 000 phosphorylation sites, and 4 400 acetylation sites were successfully annotated. This data covers 65% and 74% of the predicted and identified human proteome, respectively. A high degree of correlation (Pearson, up to 0.54) with the melanoma transcriptome of the TCGA repository, with an overlap of 12 751 gene products, was found. Mapping of the expressed proteins with quantitation, spatiotemporal localization, mutations, splice isoforms, and PTM variants was proven not to be predicted by genome sequencing alone. The melanoma tumor molecular map was complemented by analysis of blood protein expression, including data on proteins regulated after immunotherapy. By adding these key proteomic pillars, the MM500 study expands the knowledge on melanoma disease.
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11
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Betancourt LH, Gil J, Kim Y, Doma V, Çakır U, Sanchez A, Murillo JR, Kuras M, Parada IP, Sugihara Y, Appelqvist R, Wieslander E, Welinder C, Velasquez E, de Almeida NP, Woldmar N, Marko‐Varga M, Pawłowski K, Eriksson J, Szeitz B, Baldetorp B, Ingvar C, Olsson H, Lundgren L, Lindberg H, Oskolas H, Lee B, Berge E, Sjögren M, Eriksson C, Kim D, Kwon HJ, Knudsen B, Rezeli M, Hong R, Horvatovich P, Miliotis T, Nishimura T, Kato H, Steinfelder E, Oppermann M, Miller K, Florindi F, Zhou Q, Domont GB, Pizzatti L, Nogueira FCS, Horvath P, Szadai L, Tímár J, Kárpáti S, Szász AM, Malm J, Fenyö D, Ekedahl H, Németh IB, Marko‐Varga G. The human melanoma proteome atlas-Defining the molecular pathology. Clin Transl Med 2021; 11:e473. [PMID: 34323403 PMCID: PMC8255060 DOI: 10.1002/ctm2.473] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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] [Received: 03/12/2021] [Revised: 06/03/2021] [Accepted: 06/08/2021] [Indexed: 01/19/2023] Open
Abstract
The MM500 study is an initiative to map the protein levels in malignant melanoma tumor samples, focused on in-depth histopathology coupled to proteome characterization. The protein levels and localization were determined for a broad spectrum of diverse, surgically isolated melanoma tumors originating from multiple body locations. More than 15,500 proteoforms were identified by mass spectrometry, from which chromosomal and subcellular localization was annotated within both primary and metastatic melanoma. The data generated by global proteomic experiments covered 72% of the proteins identified in the recently reported high stringency blueprint of the human proteome. This study contributes to the NIH Cancer Moonshot initiative combining detailed histopathological presentation with the molecular characterization for 505 melanoma tumor samples, localized in 26 organs from 232 patients.
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12
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Järleblad H, Stagner L, Salewski M, Eriksson J, Benjamin S, Madsen B, Nocente M, Rasmussen J, Schmidt BS. Fast-ion orbit sensitivity of neutron emission spectroscopy diagnostics. Rev Sci Instrum 2021; 92:043526. [PMID: 34243421 DOI: 10.1063/5.0040696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/23/2021] [Indexed: 06/13/2023]
Abstract
Fast ions in fusion plasmas often leave characteristic signatures in the plasma neutron emission. Measurements of this emission are subject to the phase-space sensitivity of the diagnostic, which can be mapped using weight functions. In this paper, we present orbit weight functions for the TOFOR and NE213 neutron diagnostics at the Joint European Torus, mapping their phase-space sensitivity in 3D orbit space. Both diagnostics are highly sensitive to fast ions that spend a relatively large fraction of their orbit transit times inside the viewing cone of the diagnostic. For most neutron energies, TOFOR is found to be relatively sensitive to potato orbits and heavily localized counter-passing orbits, as well as trapped orbits whose "banana tips" are inside the viewing cone of TOFOR. For the NE213-scintillator, the sensitivity is found to be relatively high for stagnation orbits.
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Affiliation(s)
- H Järleblad
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - L Stagner
- General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA
| | - M Salewski
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, 751 20 Uppsala, Sweden
| | - S Benjamin
- Mathematical Sciences Institute, Australian National University, Canberra ACT 2601, Australia
| | - B Madsen
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - M Nocente
- Department of Physics, University of Milano-Bicocca, 20126 Milano, Italy
| | - J Rasmussen
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - B S Schmidt
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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13
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Eriksson B, Conroy S, Ericsson G, Eriksson J, Giacomelli L, Hjalmarsson A, Weiszflog M. New method for time alignment and time calibration of the TOFOR time-of-flight neutron spectrometer at JET. Rev Sci Instrum 2021; 92:033538. [PMID: 33820020 DOI: 10.1063/5.0041126] [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: 12/19/2020] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
The TOFOR time-of-flight (TOF) neutron spectrometer at the Joint European Torus (JET) is composed of 5 start (S1) and 32 stop (S2) scintillation detectors. Recently, the data acquisition system (DAQ) of TOFOR was upgraded to equip each of the 37 detectors with its own waveform digitizer to allow for correlated time and pulse height analysis of the acquired data. Due to varying cable lengths and different pulse processing pathways in the new DAQ system, the 160 (5 · 32) different TOF pairs of start-stop detectors must be time-aligned to enable the proper construction of a summed TOF spectrum. Given the time (energy) resolution required by the entire spectrometer system to measure different plasma neutron emission components, it is of importance to align the detector pairs to each other with sub-nanosecond precision. Previously, the alignment partially depended on using fusion neutron data from Ohmic heating phases of JET experimental pulses. The dependence on fusion neutron data in the time alignment process is, however, unsatisfactory as it involves data one would wish to include in an independent analysis for physics results. In this work, we describe a method of time-aligning the detector pairs by using gamma rays. Given the known geometry and response of TOFOR to gamma rays, the time alignment of the detector pairs is found by examining gamma events interacting in coincidence in both S1-S1 and S1-S2 detector combinations. Furthermore, a technique for separating neutron and gamma events in the different detector sets is presented. Finally, the time-aligned system is used to analyze neutron data from Ohmic phases for different plasma conditions and to estimate the Ohmic fuel ion temperature.
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Affiliation(s)
- B Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
| | - S Conroy
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
| | - G Ericsson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
| | - L Giacomelli
- Instituto de Fisica del Plasma "P. Caldirola," I-20126 Milano, Italy
| | - A Hjalmarsson
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
| | - M Weiszflog
- Department of Physics and Astronomy, Uppsala University, Uppsala SE-751 20, Sweden
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14
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Sanchez A, Kuras M, Murillo JR, Pla I, Pawlowski K, Szasz AM, Gil J, Nogueira FCS, Perez-Riverol Y, Eriksson J, Appelqvist R, Miliotis T, Kim Y, Baldetorp B, Ingvar C, Olsson H, Lundgren L, Ekedahl H, Horvatovich P, Sugihara Y, Welinder C, Wieslander E, Kwon HJ, Domont GB, Malm J, Rezeli M, Betancourt LH, Marko-Varga G. Novel functional proteins coded by the human genome discovered in metastases of melanoma patients. Cell Biol Toxicol 2020; 36:261-272. [PMID: 31599373 PMCID: PMC7320927 DOI: 10.1007/s10565-019-09494-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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] [Received: 05/21/2019] [Accepted: 09/02/2019] [Indexed: 12/18/2022]
Abstract
In the advanced stages, malignant melanoma (MM) has a very poor prognosis. Due to tremendous efforts in cancer research over the last 10 years, and the introduction of novel therapies such as targeted therapies and immunomodulators, the rather dark horizon of the median survival has dramatically changed from under 1 year to several years. With the advent of proteomics, deep-mining studies can reach low-abundant expression levels. The complexity of the proteome, however, still surpasses the dynamic range capabilities of current analytical techniques. Consequently, many predicted protein products with potential biological functions have not yet been verified in experimental proteomic data. This category of 'missing proteins' (MP) is comprised of all proteins that have been predicted but are currently unverified. As part of the initiative launched in 2016 in the USA, the European Cancer Moonshot Center has performed numerous deep proteomics analyses on samples from MM patients. In this study, nine MPs were clearly identified by mass spectrometry in MM metastases. Some MPs significantly correlated with proteins that possess identical PFAM structural domains; and other MPs were significantly associated with cancer-related proteins. This is the first study to our knowledge, where unknown and novel proteins have been annotated in metastatic melanoma tumour tissue.
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Affiliation(s)
- Aniel Sanchez
- Section for Clinical Chemistry, Department of Translational Medicine, Skåne University Hospital Malmö, Lund University, 205 02, Malmö, Sweden.
| | - Magdalena Kuras
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Jimmy Rodriguez Murillo
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Indira Pla
- Section for Clinical Chemistry, Department of Translational Medicine, Skåne University Hospital Malmö, Lund University, 205 02, Malmö, Sweden
| | - Krzysztof Pawlowski
- Section for Clinical Chemistry, Department of Translational Medicine, Skåne University Hospital Malmö, Lund University, 205 02, Malmö, Sweden
- Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - A Marcell Szasz
- Cancer Center, Semmelweis University, Budapest, 1083, Hungary
| | - Jeovanis Gil
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Fábio C S Nogueira
- Proteomics Unit, Department of Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Proteomics, LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Yasset Perez-Riverol
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, CB10 1SD Hinxton, Cambridge, UK
| | - Jonatan Eriksson
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Roger Appelqvist
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | | | - Yonghyo Kim
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Bo Baldetorp
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Christian Ingvar
- Department of Surgery, Clinical Sciences, Skåne University Hospital, Lund University, Lund, Sweden
| | - Håkan Olsson
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Lotta Lundgren
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Henrik Ekedahl
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Peter Horvatovich
- Department of Analytical Biochemistry, Faculty of Science and Engineering, University of Groningen, Groningen, The Netherlands
| | - Yutaka Sugihara
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Charlotte Welinder
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Elisabet Wieslander
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Ho Jeong Kwon
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Gilberto B Domont
- Proteomics Unit, Department of Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Johan Malm
- Section for Clinical Chemistry, Department of Translational Medicine, Skåne University Hospital Malmö, Lund University, 205 02, Malmö, Sweden
| | - Melinda Rezeli
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Lazaro Hiram Betancourt
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden.
| | - György Marko-Varga
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
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15
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Patten HW, Graves JP, Cooper WA, Eriksson J, Pfefferlé D. Identification of an Optimized Heating and Fast Ion Generation Scheme for the Wendelstein 7-X Stellarator. Phys Rev Lett 2020; 124:155001. [PMID: 32357043 DOI: 10.1103/physrevlett.124.155001] [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: 07/04/2019] [Revised: 12/24/2019] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
A Doppler shifted resonance minority species ion cyclotron range of frequency (ICRF) scheme for heating neutral beam ions has been identified and optimized for the Wendelstein 7-X stellarator. Compared with more conventional methods, the synergetic scheme increases the normalized core collisional power transfer to the background plasma, and induces larger concentrations of energetic ions. Simulations in the intricate 3D magnetic stellarator geometry reveal an energetic distribution function that is only weakly anisotropic, and is thus relevant to fast ion and alpha particle driven Alfvén eigenmode experimental preparation. Quasilinear theory and simulations of the Joint European Torus indicate that the excellent confinement properties are due to increased velocity diffusion from ICRF interaction along the magnetic field lines. Agreement is found between SCENIC simulations and Joint European Torus experimental measurements for the total neutron rate and the energy distribution of the fast ions.
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Affiliation(s)
- H W Patten
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland
| | - J P Graves
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland
| | - W A Cooper
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - D Pfefferlé
- University of Western Australia, 6009 Crawley, Australia
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16
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Betancourt LH, Szasz AM, Kuras M, Rodriguez Murillo J, Sugihara Y, Pla I, Horvath Z, Pawłowski K, Rezeli M, Miharada K, Gil J, Eriksson J, Appelqvist R, Miliotis T, Baldetorp B, Ingvar C, Olsson H, Lundgren L, Horvatovich P, Welinder C, Wieslander E, Kwon HJ, Malm J, Nemeth IB, Jönsson G, Fenyö D, Sanchez A, Marko-Varga G. The Hidden Story of Heterogeneous B-raf V600E Mutation Quantitative Protein Expression in Metastatic Melanoma-Association with Clinical Outcome and Tumor Phenotypes. Cancers (Basel) 2019; 11:E1981. [PMID: 31835364 PMCID: PMC6966659 DOI: 10.3390/cancers11121981] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/23/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
In comparison to other human cancer types, malignant melanoma exhibits the greatest amount of heterogeneity. After DNA-based detection of the BRAF V600E mutation in melanoma patients, targeted inhibitor treatment is the current recommendation. This approach, however, does not take the abundance of the therapeutic target, i.e., the B-raf V600E protein, into consideration. As shown by immunohistochemistry, the protein expression profiles of metastatic melanomas clearly reveal the existence of inter- and intra-tumor variability. Nevertheless, the technique is only semi-quantitative. To quantitate the mutant protein there is a fundamental need for more precise techniques that are aimed at defining the currently non-existent link between the levels of the target protein and subsequent drug efficacy. Using cutting-edge mass spectrometry combined with DNA and mRNA sequencing, the mutated B-raf protein within metastatic tumors was quantitated for the first time. B-raf V600E protein analysis revealed a subjacent layer of heterogeneity for mutation-positive metastatic melanomas. These were characterized into two distinct groups with different tumor morphologies, protein profiles and patient clinical outcomes. This study provides evidence that a higher level of expression in the mutated protein is associated with a more aggressive tumor progression. Our study design, comprised of surgical isolation of tumors, histopathological characterization, tissue biobanking, and protein analysis, may enable the eventual delineation of patient responders/non-responders and subsequent therapy for malignant melanoma.
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Affiliation(s)
- Lazaro Hiram Betancourt
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - A. Marcell Szasz
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
- Cancer Center, Semmelweis University, Budapest 1083, Hungary
| | - Magdalena Kuras
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden; (M.K.); (I.P.); (K.P.); (J.M.); (A.S.)
| | - Jimmy Rodriguez Murillo
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden; (J.R.M.); (Y.S.)
| | - Yutaka Sugihara
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden; (J.R.M.); (Y.S.)
| | - Indira Pla
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden; (M.K.); (I.P.); (K.P.); (J.M.); (A.S.)
| | - Zsolt Horvath
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - Krzysztof Pawłowski
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden; (M.K.); (I.P.); (K.P.); (J.M.); (A.S.)
- Department of Biochemistry and Microbiology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Melinda Rezeli
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - Kenichi Miharada
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, Sölvegatan 17, 221 84 Lund, Sweden;
| | - Jeovanis Gil
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - Jonatan Eriksson
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - Roger Appelqvist
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
| | - Tasso Miliotis
- Translational Science, Cardiovascular Renal and Metabolism, IMED Biotech Unit, AstraZeneca, 431 50 Gothenburg, Sweden;
| | - Bo Baldetorp
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - Christian Ingvar
- Department of Surgery, Clinical Sciences, Lund University, Skåne University Hospital, 222 42 Lund, Sweden;
| | - Håkan Olsson
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - Lotta Lundgren
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - Peter Horvatovich
- Department of Analytical Biochemistry, Faculty of Science and Engineering, University of Groningen, 9712 CP Groningen, The Netherlands;
| | - Charlotte Welinder
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - Elisabet Wieslander
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - Ho Jeong Kwon
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea;
| | - Johan Malm
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden; (M.K.); (I.P.); (K.P.); (J.M.); (A.S.)
| | - Istvan Balazs Nemeth
- Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary;
| | - Göran Jönsson
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden; (B.B.); (H.O.); (L.L.); (C.W.); (E.W.); (G.J.)
| | - David Fenyö
- Institute for Systems Genetics, NYU School of Medicine, 550 1st Ave, New York, NY 10016, USA;
| | - Aniel Sanchez
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden; (M.K.); (I.P.); (K.P.); (J.M.); (A.S.)
| | - György Marko-Varga
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical, Engineering, Lund University, BMC D13, 221 84 Lund, Sweden; (L.H.B.); (Z.H.); (M.R.); (J.G.); (J.E.); (R.A.); (G.M.-V.)
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17
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Eriksson J, Norlén O, Ögren M, Garmo H, Ihre-Lundgren C, Hellman P. Primary small intestinal neuroendocrine tumors are highly prevalent and often multiple before metastatic disease develops. Scand J Surg 2019; 110:44-50. [PMID: 31587594 DOI: 10.1177/1457496919874484] [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: 02/05/2023]
Abstract
BACKGROUND Small intestinal neuroendocrine tumors are the most common of small bowel malignancies with a clinical incidence of about 1 per 100,000 persons per year. There has been a threefold increase in the incidence of small intestinal neuroendocrine tumor during later decades, but there are no studies that clarify whether this is due to a true higher incidence or if the rise is a mere product of, for instance, improved diagnostic modalities. The aim of this study was to investigate the incidence of clinical as well as subclinical small intestinal neuroendocrine tumors found at autopsy as well as describing the frequency of concomitant malignancies in patients with small intestinal neuroendocrine tumor. MATERIALS AND METHODS An autopsy registry from the Malmö county population from 1970 to 1982 with an 87% autopsy rate was used. The clinical autopsy reports for patients coded for the existence of "carcinoid tumor" were scrutinized for the presence of small intestinal neuroendocrine tumor, metastatic disease, and concomitant malignancies. Details of patients with clinically diagnosed small intestinal neuroendocrine tumor during this time period were gathered from the Swedish Cancer Registry. RESULTS The mean annual incidence of small intestinal neuroendocrine tumor during this period was 5.33 per 100,000 individuals, and the mean annual prevalence was 581 per 100,000. The cause of death in the majority of cases was not due to small intestinal neuroendocrine tumor. In total, 48% of the people with small intestinal neuroendocrine tumor had at least one other malignancy, most commonly colorectal cancer. CONCLUSION Most small intestinal neuroendocrine tumors are subclinical, and persons living with them will often die due to other causes. There was a high rate of multiple primary tumors (40%), suggesting that multiple tumors seem to arise before the advent of metastatic disease. Moreover, a comparably high rate of associated colorectal carcinoma was found.
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Affiliation(s)
- J Eriksson
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - O Norlén
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - M Ögren
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - H Garmo
- Division of Cancer Studies, Cancer Epidemiology Group, Research Oncology, King's College London, London, UK.,Regional Oncologic Centre, Uppsala University, Uppsala, Sweden
| | - C Ihre-Lundgren
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - P Hellman
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
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18
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Gil J, Betancourt LH, Pla I, Sanchez A, Appelqvist R, Miliotis T, Kuras M, Oskolas H, Kim Y, Horvath Z, Eriksson J, Berge E, Burestedt E, Jönsson G, Baldetorp B, Ingvar C, Olsson H, Lundgren L, Horvatovich P, Murillo JR, Sugihara Y, Welinder C, Wieslander E, Lee B, Lindberg H, Pawłowski K, Kwon HJ, Doma V, Timar J, Karpati S, Szasz AM, Németh IB, Nishimura T, Corthals G, Rezeli M, Knudsen B, Malm J, Marko-Varga G. Clinical protein science in translational medicine targeting malignant melanoma. Cell Biol Toxicol 2019; 35:293-332. [PMID: 30900145 PMCID: PMC6757020 DOI: 10.1007/s10565-019-09468-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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] [Received: 12/04/2018] [Accepted: 02/13/2019] [Indexed: 02/06/2023]
Abstract
Melanoma of the skin is the sixth most common type of cancer in Europe and accounts for 3.4% of all diagnosed cancers. More alarming is the degree of recurrence that occurs with approximately 20% of patients lethally relapsing following treatment. Malignant melanoma is a highly aggressive skin cancer and metastases rapidly extend to the regional lymph nodes (stage 3) and to distal organs (stage 4). Targeted oncotherapy is one of the standard treatment for progressive stage 4 melanoma, and BRAF inhibitors (e.g. vemurafenib, dabrafenib) combined with MEK inhibitor (e.g. trametinib) can effectively counter BRAFV600E-mutated melanomas. Compared to conventional chemotherapy, targeted BRAFV600E inhibition achieves a significantly higher response rate. After a period of cancer control, however, most responsive patients develop resistance to the therapy and lethal progression. The many underlying factors potentially causing resistance to BRAF inhibitors have been extensively studied. Nevertheless, the remaining unsolved clinical questions necessitate alternative research approaches to address the molecular mechanisms underlying metastatic and treatment-resistant melanoma. In broader terms, proteomics can address clinical questions far beyond the reach of genomics, by measuring, i.e. the relative abundance of protein products, post-translational modifications (PTMs), protein localisation, turnover, protein interactions and protein function. More specifically, proteomic analysis of body fluids and tissues in a given medical and clinical setting can aid in the identification of cancer biomarkers and novel therapeutic targets. Achieving this goal requires the development of a robust and reproducible clinical proteomic platform that encompasses automated biobanking of patient samples, tissue sectioning and histological examination, efficient protein extraction, enzymatic digestion, mass spectrometry-based quantitative protein analysis by label-free or labelling technologies and/or enrichment of peptides with specific PTMs. By combining data from, e.g. phosphoproteomics and acetylomics, the protein expression profiles of different melanoma stages can provide a solid framework for understanding the biology and progression of the disease. When complemented by proteogenomics, customised protein sequence databases generated from patient-specific genomic and transcriptomic data aid in interpreting clinical proteomic biomarker data to provide a deeper and more comprehensive molecular characterisation of cellular functions underlying disease progression. In parallel to a streamlined, patient-centric, clinical proteomic pipeline, mass spectrometry-based imaging can aid in interrogating the spatial distribution of drugs and drug metabolites within tissues at single-cell resolution. These developments are an important advancement in studying drug action and efficacy in vivo and will aid in the development of more effective and safer strategies for the treatment of melanoma. A collaborative effort of gargantuan proportions between academia and healthcare professionals has led to the initiation, establishment and development of a cutting-edge cancer research centre with a specialisation in melanoma and lung cancer. The primary research focus of the European Cancer Moonshot Lund Center is to understand the impact that drugs have on cancer at an individualised and personalised level. Simultaneously, the centre increases awareness of the relentless battle against cancer and attracts global interest in the exceptional research performed at the centre.
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Affiliation(s)
- Jeovanis Gil
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden.
| | - Lazaro Hiram Betancourt
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden.
| | - Indira Pla
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02, Malmö, Sweden
| | - Aniel Sanchez
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02, Malmö, Sweden
| | - Roger Appelqvist
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Tasso Miliotis
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Translational Science, Cardiovascular Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Magdalena Kuras
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Henriette Oskolas
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Yonghyo Kim
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Zsolt Horvath
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Jonatan Eriksson
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Ethan Berge
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Elisabeth Burestedt
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Göran Jönsson
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Bo Baldetorp
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Christian Ingvar
- Department of Surgery, Clinical Sciences, Lund University, SUS, Lund, Sweden
| | - Håkan Olsson
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Lotta Lundgren
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
- Department of Haematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Peter Horvatovich
- Department of Analytical Biochemistry, Faculty of Science and Engineering, University of Groningen, Groningen, The Netherlands
| | - Jimmy Rodriguez Murillo
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Yutaka Sugihara
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Charlotte Welinder
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Elisabet Wieslander
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
| | - Boram Lee
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Henrik Lindberg
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Krzysztof Pawłowski
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Department of Experimental Design and Bioinformatics, Faculty of Agriculture and Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Ho Jeong Kwon
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Chemical Genomics Global Research Lab, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Viktoria Doma
- Second Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Jozsef Timar
- Second Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Sarolta Karpati
- Department of Dermatology, Semmelweis University, Budapest, Hungary
| | - A Marcell Szasz
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, 221 85, Lund, Sweden
- Cancer Center, Semmelweis University, Budapest, 1083, Hungary
- MTA-TTK Momentum Oncology Biomarker Research Group, Hungarian Academy of Sciences, Budapest, 1117, Hungary
| | - István Balázs Németh
- Department of Dermatology and Allergology, University of Szeged, Szeged, H-6720, Hungary
| | - Toshihide Nishimura
- Clinical Translational Medicine Informatics, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishishinjiku Shinjiku-ku, Tokyo, Japan
| | - Garry Corthals
- Van't Hoff Institute of Molecular Sciences, 1090 GS, Amsterdam, The Netherlands
| | - Melinda Rezeli
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
| | - Beatrice Knudsen
- Biomedical Sciences and Pathology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Johan Malm
- Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02, Malmö, Sweden
| | - György Marko-Varga
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84, Lund, Sweden
- Chemical Genomics Global Research Lab, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishishinjiku Shinjiku-ku, Tokyo, Japan
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19
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Arora GP, Åkerlund M, Brøns C, Moen GH, Wasenius NS, Sommer C, Jenum AK, Almgren P, Thaman RG, Orho-Melander M, Eriksson J, Qvigstad E, Birkeland K, Berntorp K, Vaag AA, Groop L, Prasad RB. Phenotypic and genotypic differences between Indian and Scandinavian women with gestational diabetes mellitus. J Intern Med 2019; 286:192-206. [PMID: 30919529 DOI: 10.1111/joim.12903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Gestational diabetes mellitus (GDM) is a transient form of diabetes characterized by impaired insulin secretion and action during pregnancy. Population-based differences in prevalence exist which could be explained by phenotypic and genetic differences. The aim of this study was to examine these differences in pregnant women from Punjab, India and Scandinavia. METHODS Eighty-five GDM/T2D loci in European and/or Indian populations from previous studies were assessed for association with GDM based on Swedish GDM criteria in 4018 Punjabi Indian and 507 Swedish pregnant women. Selected loci were replicated in Scandinavian cohorts, Radiel (N = 398, Finnish) and STORK/STORK-G (N = 780, Norwegian). RESULTS Punjabi Indian women had higher GDM prevalence, lower insulin secretion and better insulin sensitivity than Swedish women. There were significant frequency differences of GDM/T2D risk alleles between both populations. rs7178572 at HMG20A, previously associated with GDM in South Indian and European women, was replicated in North Indian women. The T2D risk SNP rs11605924 in the CRY2 gene was associated with increased GDM risk in Scandinavian but decreased GDM risk in Punjabi Indian women. No other overlap was seen between GDM loci in both populations. CONCLUSIONS Gestational diabetes mellitus is more common in Indian than Swedish women, which partially can be attributed to differences in insulin secretion and action. There was marked heterogeneity in the GDM phenotypes between the populations which could only partially be explained by genetic differences.
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Affiliation(s)
- G P Arora
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden.,Deep Hospital, Ludhiana, Punjab, India
| | - M Åkerlund
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden
| | - C Brøns
- Department of Endocrinology (Diabetes and Metabolism), Rigshospitalet, Copenhagen, Denmark
| | - G-H Moen
- Department of Endocrinology Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - N S Wasenius
- Folkhälsan Research Center, Biomedicum Helsinki, Helsinki, Finland.,Department of General Practice and Primary Health Care, Diabetes and Obesity Research Program Research Programs Unit, University of Helsinki, Helsinki, Finland
| | - C Sommer
- Department of Endocrinology Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - A K Jenum
- Department of General Practice, Institute of Health and Society, University of Oslo, Oslo, Norway
| | - P Almgren
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden
| | | | - M Orho-Melander
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden
| | - J Eriksson
- Department of General Practice and Primary Health Care, Diabetes and Obesity Research Program Research Programs Unit, University of Helsinki, Helsinki, Finland
| | - E Qvigstad
- Department of Endocrinology Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.,Section of Specialized Endocrinology, Department of Endocrinology, Oslo University Hospital, Oslo, Norway
| | - K Birkeland
- Department of Endocrinology Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - K Berntorp
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden.,Department of Endocrinology, Skåne University Hospital, Malmö, Sweden
| | - A A Vaag
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden.,Department of Endocrinology (Diabetes and Metabolism), Rigshospitalet, Copenhagen, Denmark.,Cardiovascular, Renal and Metabolism (CVRM) Translational Medicine Unit, Early Clinical development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - L Groop
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden.,Finnish Institute of Molecular Medicine (FIMM), Helsinki University, Helsinki, Finland
| | - R B Prasad
- Department of Clinical Sciences, Clinical Research Centre, Lund University, Malmö, Sweden
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20
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Nichol K, Kudla I, Young V, Eriksson J, Budd D, Holness DL. Testing the joint health and safety committee assessment tool in the education sector. Arch Environ Occup Health 2019; 75:209-215. [PMID: 30990391 DOI: 10.1080/19338244.2019.1594662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Joint Health and Safety Committee (JHSC) effectiveness has been identified as an area of concern for Ontario's education sector. The JHSC Assessment Tool has been previously tested in hospitals with positive results. This study assessed the feasibility and usability of the JHSC Assessment Tool in the education sector. Members of multi-workplace JHSCs from Ontario school boards used the tool to assess their committees' effectiveness before, during and after a committee meeting with usability testing conducted pre and post meeting. Results suggested that the JHSC Assessment Tool was feasible to use during a regular JHSC meeting, groups were able to come to consensus on the majority of items, and usability scores were high overall. Participant feedback provided insight that informed the development of a version relevant to multi-workplace committees.
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Affiliation(s)
- K Nichol
- VHA Home HealthCare, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Research Expertise in Occupational Disease, Toronto, Ontario, Canada
- Lawerence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada
| | - I Kudla
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Research Expertise in Occupational Disease, Toronto, Ontario, Canada
- St. Michael's Hospital, Occupational Health Clinic, Toronto, Ontario, Canada
| | - V Young
- Elementary Teachers' Federation of Ontario, Toronto, Ontario, Canada
| | - J Eriksson
- Collaborative Academic Practice, University Health Network, Toronto, Ontario, Canada
| | - D Budd
- Centre for Research Expertise in Occupational Disease, Toronto, Ontario, Canada
- Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - D L Holness
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Research Expertise in Occupational Disease, Toronto, Ontario, Canada
- Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Division of Occupational Medicine, Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada
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21
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Betancourt LH, Pawłowski K, Eriksson J, Szasz AM, Mitra S, Pla I, Welinder C, Ekedahl H, Broberg P, Appelqvist R, Yakovleva M, Sugihara Y, Miharada K, Ingvar C, Lundgren L, Baldetorp B, Olsson H, Rezeli M, Wieslander E, Horvatovich P, Malm J, Jönsson G, Marko-Varga G. Improved survival prognostication of node-positive malignant melanoma patients utilizing shotgun proteomics guided by histopathological characterization and genomic data. Sci Rep 2019; 9:5154. [PMID: 30914758 PMCID: PMC6435712 DOI: 10.1038/s41598-019-41625-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 03/13/2019] [Indexed: 12/18/2022] Open
Abstract
Metastatic melanoma is one of the most common deadly cancers, and robust biomarkers are still needed, e.g. to predict survival and treatment efficiency. Here, protein expression analysis of one hundred eleven melanoma lymph node metastases using high resolution mass spectrometry is coupled with in-depth histopathology analysis, clinical data and genomics profiles. This broad view of protein expression allowed to identify novel candidate protein markers that improved prediction of survival in melanoma patients. Some of the prognostic proteins have not been reported in the context of melanoma before, and few of them exhibit unexpected relationship to survival, which likely reflects the limitations of current knowledge on melanoma and shows the potential of proteomics in clinical cancer research.
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Affiliation(s)
| | - Krzysztof Pawłowski
- Lund University, Lund, Sweden.
- Warsaw University of Life Sciences SGGW, Warszawa, Poland.
| | | | - A Marcell Szasz
- Lund University, Lund, Sweden
- National Koranyi Institute of Pulmonology, Budapest, Hungary
- Semmelweis University, Budapest, Hungary
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Peter Horvatovich
- Lund University, Lund, Sweden
- University of Groningen, Groningen, The Netherlands
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22
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Morais E, Wang X, Luttropp K, Nicholson M, Varga S, Eriksson J, Wong J, Drury R, Kothari S, Walia A. PO-152 Epidemiological trends of HPV-related head and neck cancer in males: a systematic literature review. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30318-4] [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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23
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Eriksson M, von Oelreich E, Brattström O, Eriksson J, Larsson E, Oldner A. Effect of preadmission beta-blockade on mortality in multiple trauma. BJS Open 2018; 2:392-399. [PMID: 30511040 PMCID: PMC6253788 DOI: 10.1002/bjs5.83] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/24/2018] [Accepted: 05/03/2018] [Indexed: 11/08/2022] Open
Abstract
Background High levels of circulating catecholamines after multiple trauma have been associated with increased morbidity and mortality. Beta‐adrenergic receptor antagonist (beta‐blocker) therapy has emerged as a potential treatment option, but the effect of preinjury beta‐blockade on trauma‐induced mortality is unclear. The aim of this study was to assess whether preinjury beta‐blocker therapy is associated with reduced mortality after multiple trauma. Methods Severely injured patients, aged at least 50 years, admitted to a level one trauma centre over a 10‐year interval were linked to national and local registries of co‐morbidities, prescription drug use and level of education. The association between preinjury beta‐blocker use and 30‐day mortality was explored using logistic regression analysis. Results Some 1376 patients were included; 338 (24·6 per cent) were receiving beta‐blockers at the time of trauma. Beta‐blocker users had an increased crude 30‐day mortality rate compared with that for non‐users: 32·8 versus 19·7 per cent respectively (P < 0·001). After adjustment for baseline imbalances and injury‐related factors, there was no association between preinjury beta‐blocker use and mortality (OR 1·09, 95 per cent c.i. 0·70 to 1·70). Separate analyses of individuals with or without severe head injury did not significantly change this association. There was no significant difference in the rate of shock between beta‐blocker users and non‐users. Conclusion Pretrauma beta‐blockade is not associated with 30‐day mortality beyond the effects of age, co‐morbidity and injury severity.
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Affiliation(s)
- M Eriksson
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
| | - E von Oelreich
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
| | - O Brattström
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
| | - J Eriksson
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
| | - E Larsson
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
| | - A Oldner
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Solna Stockholm Sweden.,Section of Anaesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm Sweden
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24
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Rinke A, Neary M, Eriksson J, Hunger M, Doan T, Karli D, Arnold R. Health-related quality of life (HRQoL) for octreotide long-acting (oct l-a) vs. placebo (PBO) in patients (pts) with metastatic midgut neuroendocrine tumors (mmNETs) in the phase IIIb PROMID trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy293.004] [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: 11/13/2022] Open
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25
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Giacomelli L, Belli F, Binda F, Conroy SW, Eriksson J, Milocco A, Popovicev S, Syme DB. Neutron emission spectroscopy of D plasmas at JET with a compact liquid scintillating neutron spectrometer. Rev Sci Instrum 2018; 89:10I113. [PMID: 30399806 DOI: 10.1063/1.5038549] [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: 05/03/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Neutron emission spectroscopy is a diagnostic technique that allows for energy measurements of neutrons born in nuclear reactions. The JET tokamak fusion experiment (Culham, UK) has a special role in this respect as advanced spectrometers for 2.5 MeV and 14 MeV neutrons have been developed here for the first time for measurements of the neutron emission spectrum from D and DT plasmas with unprecedented accuracy. Twin liquid scintillating neutron spectrometers were built and calibrated at the Physikalisch-Technische Bundesanstalt (PTB) (Braunschweig, Germany) and installed on JET in the recent years with tangential-equatorial (KM12) and vertical-radial (KM13) view lines, with the latter only recently operational. This article reports on the performance of KM12 and on the development of the data analysis methods in order to extract physics information upon D ions kinematics in JET auxiliary-heated D plasmas from 2.5 MeV neutron measurements. The comparison of these results with the correspondents from other JET neutron spectrometers is also presented: their agreement allows for JET unique capability of multi-lines of sight neutron spectroscopy and for benchmarking other 14 MeV neutron spectrometers installed on the same lines of sight in preparation for the DT experimental campaign at JET.
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Affiliation(s)
- L Giacomelli
- Istituto di Fisica del Plasma "P. Caldirola," CNR, Milano, Italy
| | - F Belli
- Dipartimento FSN, ENEA CR Frascati, Roma, Italy
| | - F Binda
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - S W Conroy
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - A Milocco
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano, Italy
| | - S Popovicev
- CCFE, Culham Science Centre, Abingdon, United Kingdom
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Moilanen A, Lindqvist J, Björkman M, Riikonen R, Nicorici D, Mattila E, Abbineni C, Jaleel M, Eriksson J, Kallio P. ODM-207: A novel BET bromodomain inhibitor with antitumor activity in nonclinical models of ER+ breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy268.015] [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: 11/13/2022] Open
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Ekman U, Fordell H, Eriksson J, Lenfeldt N, Wåhlin A, Eklund A, Malm J. Increase of frontal neuronal activity in chronic neglect after training in virtual reality. Acta Neurol Scand 2018; 138:284-292. [PMID: 29770439 DOI: 10.1111/ane.12955] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2018] [Indexed: 10/16/2022]
Abstract
OBJECTIVES A third of patients with stroke acquire spatial neglect associated with poor rehabilitation outcome. New effective rehabilitation interventions are needed. Scanning training combined with multisensory stimulation to enhance the rehabilitation effect is suggested. In accordance, we have designed a virtual-reality based scanning training that combines visual, audio and sensori-motor stimulation called RehAtt® . Effects were shown in behavioural tests and activity of daily living. Here, we use fMRI to evaluate the change in brain activity during Posner's Cuing Task (attention task) after RehAtt® intervention, in patients with chronic neglect. METHODS Twelve patients (mean age = 72.7 years, SD = 6.1) with chronic neglect (persistent symptoms >6 months) performed the interventions 3 times/wk during 5 weeks, in total 15 hours. Training effects on brain activity were evaluated using fMRI task-evoked responses during the Posner's cuing task before and after the intervention. RESULTS Patients improved their performance in the Posner fMRI task. In addition, patients increased their task-evoked brain activity after the VR interventions in an extended network including pre-frontal and temporal cortex during attentional cueing, but showed no training effects during target presentations. CONCLUSIONS The current pilot study demonstrates that a novel multisensory VR intervention has the potential to benefit patients with chronic neglect in respect of behaviour and brain changes. Specifically, the fMRI results show that strategic processes (top-down control during attentional cuing) were enhanced by the intervention. The findings increase knowledge of the plasticity processes underlying positive rehabilitation effects from RehAtt® in chronic neglect.
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Affiliation(s)
- U. Ekman
- Department of Integrative Medical Biology; Umeå University; Umeå Sweden
- Umeå Center for Functional Brain Imaging; Umeå University; Umeå Sweden
- Department of Neurobiology, Care Sciences and Society; Karolinska Institutet; Stockholm Sweden
| | - H. Fordell
- Department of Pharmacology and Clinical Neuroscience; Umeå University; Umeå Sweden
| | - J. Eriksson
- Department of Integrative Medical Biology; Umeå University; Umeå Sweden
- Umeå Center for Functional Brain Imaging; Umeå University; Umeå Sweden
| | - N. Lenfeldt
- Department of Pharmacology and Clinical Neuroscience; Umeå University; Umeå Sweden
| | - A. Wåhlin
- Department of Radiation Sciences; Biomedical Engineering; Umeå University; Umeå Sweden
| | - A. Eklund
- Umeå Center for Functional Brain Imaging; Umeå University; Umeå Sweden
- Department of Radiation Sciences; Biomedical Engineering; Umeå University; Umeå Sweden
| | - J. Malm
- Department of Pharmacology and Clinical Neuroscience; Umeå University; Umeå Sweden
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Halldorsdottir HD, Eriksson J, Persson BP, Herwald H, Lindbom L, Weitzberg E, Oldner A. Heparin-binding protein as a biomarker of post-injury sepsis in trauma patients. Acta Anaesthesiol Scand 2018; 62:962-973. [PMID: 29569247 DOI: 10.1111/aas.13107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 01/01/2018] [Accepted: 02/13/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Heparin-binding protein (HBP) is a neutrophil-derived protein advocated as a biomarker in sepsis. We evaluated plasma HBP as a predictor of post-injury sepsis in trauma patients. METHODS Ninety-seven trauma patients were studied during the first week of intensive care. Injury-related data were collected and clinical parameters registered daily. Plasma HBP was sampled on day 1, 3 and 5 after trauma and evaluated for associations with injury-related parameters and sepsis. The predictive properties of HBP were compared to C-reactive protein (CRP) and white blood cell count (WBC). RESULTS Median Injury Severity Score was 33, one-third of the trauma patients received massive transfusion and a quarter was in shock on arrival. Overall 30-day mortality was 8%. Plasma HBP was significantly higher in severely injured patients and associated with shock on arrival, massive transfusions and organ failure. Septic patients had higher levels of HBP only on day 5. When evaluated for prediction of onset of sepsis during the two following days after plasma sampling by receiver operating characteristic (ROC) analyses, areas under the curves were non-significant for all time points. Similar patterns were seen for CRP and WBC. CONCLUSION In trauma patients, HBP levels are related to severity of injury and organ dysfunction. Heparin-binding protein was weakly associated with sepsis and only at the later stage of the observation period of 1 week. Moreover, HBP showed poor discriminatory properties as an early biomarker of post-injury sepsis. Trauma-induced inflammation during the post-injury phase may blunt the sepsis-predictive performance of HBP.
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Affiliation(s)
- H. D. Halldorsdottir
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
- Department of Perioperative Medicine, and Intensive Care; Karolinska University Hospital; Solna, Stockholm Sweden
| | - J. Eriksson
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
- Department of Perioperative Medicine, and Intensive Care; Karolinska University Hospital; Solna, Stockholm Sweden
| | - B. P. Persson
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
- Department of Perioperative Medicine, and Intensive Care; Karolinska University Hospital; Solna, Stockholm Sweden
| | - H. Herwald
- Department of Cell and Molecular Biology; Lund University; Lund Sweden
| | - L. Lindbom
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
| | - E. Weitzberg
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
- Department of Perioperative Medicine, and Intensive Care; Karolinska University Hospital; Solna, Stockholm Sweden
| | - A. Oldner
- Department of Physiology and Pharmacology; Section of Anaesthesiology and Intensive Care Medicine; Karolinska Institutet; Stockholm Sweden
- Department of Perioperative Medicine, and Intensive Care; Karolinska University Hospital; Solna, Stockholm Sweden
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Eriksson J, Garmo JEH, Ihre-Lundgren C, Hellman P. Prognostic factors for death after surgery for small intestinal neuroendocrine tumours. BJS Open 2018; 2:345-352. [PMID: 30263986 PMCID: PMC6156160 DOI: 10.1002/bjs5.76] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/23/2018] [Indexed: 01/01/2023] Open
Abstract
Background Neuroendocrine tumours of the small intestine (SI-NETs) are rare gastrointestinal neoplasms with an annual incidence of about one per 100 000. Patients with apparently similar tumours have variable outcomes. The aim of this study was to identify postoperative prognostic factors identifiable after initial surgery. Methods This was a nested case-control study of patients with SI-NETs who were treated between 1961 and 2001. Data were retrieved from the Swedish Cancer Registry. Patients who died from the SI-NET and corresponding controls (who outlived cases by at least 1 month), matched by age at diagnosis and calendar period, were included. Sex, postoperative symptoms, postoperative 5-hydroxyindoleacetic acid (5-HIAA) values, European Neuroendocrine Tumor Society (ENETS) stage, insufficiency of the tricuspid valve, radical secondary surgery and secondary malignancy were studied as potential prognostic factors. Results In total, 1122 patients were included (561 cases, 561 controls). Postoperative factors of prognostic importance included hormone-related symptoms, stage IV disease, raised levels of 5-HIAA, insufficiency of the tricuspid valve, secondary surgery not being macroscopically radical and a second malignancy. Conclusion Stage and symptomatic disease are important prognostic factors in SI-NET.
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Affiliation(s)
- J Eriksson
- Department of Surgical Sciences Uppsala University Uppsala Sweden
| | - J E H Garmo
- Regional Oncological Centre Uppsala University Uppsala Sweden.,Cancer Epidemiology Unit, Division of Cancer Studies King's College London London UK
| | - C Ihre-Lundgren
- Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
| | - P Hellman
- Department of Surgical Sciences Uppsala University Uppsala Sweden
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Stoll VM, Loudon M, Eriksson J, Bissell MM, Dyverfeldt P, Ebbers T, Myerson SG, Neubauer S, Carlhäll CJ, Hess AT. Test-retest variability of left ventricular 4D flow cardiovascular magnetic resonance measurements in healthy subjects. J Cardiovasc Magn Reson 2018; 20:15. [PMID: 29499706 PMCID: PMC5833126 DOI: 10.1186/s12968-018-0432-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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] [Received: 07/06/2017] [Accepted: 01/29/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Quantification and visualisation of left ventricular (LV) blood flow is afforded by three-dimensional, time resolved phase contrast cardiovascular magnetic resonance (CMR 4D flow). However, few data exist upon the repeatability and variability of these parameters in a healthy population. We aimed to assess the repeatability and variability over time of LV 4D CMR flow measurements. METHODS Forty five controls underwent CMR 4D flow data acquisition. Of these, 10 underwent a second scan within the same visit (scan-rescan), 25 returned for a second visit (interval scan; median interval 52 days, IQR 28-57 days). The LV-end diastolic volume (EDV) was divided into four flow components: 1) Direct flow: inflow that passes directly to ejection; 2) Retained inflow: inflow that enters and resides within the LV; 3) Delayed ejection flow: starts within the LV and is ejected and 4) Residual volume: blood that resides within the LV for > 2 cardiac cycles. Each flow components' volume was related to the EDV (volume-ratio). The kinetic energy at end-diastole (ED) was measured and divided by the components' volume. RESULTS The dominant flow component in all 45 controls was the direct flow (volume ratio 38 ± 4%) followed by the residual volume (30 ± 4%), then delayed ejection flow (16 ± 3%) and retained inflow (16 ± 4%). The kinetic energy at ED for each component was direct flow (7.8 ± 3.0 microJ/ml), retained inflow (4.1 ± 2.0 microJ/ml), delayed ejection flow (6.3 ± 2.3 microJ/ml) and the residual volume (1.2 ± 0.5 microJ/ml). The coefficients of variation for the scan-rescan ranged from 2.5%-9.2% for the flow components' volume ratio and between 13.5%-17.7% for the kinetic energy. The interval scan results showed higher coefficients of variation with values from 6.2-16.1% for the flow components' volume ratio and 16.9-29.0% for the kinetic energy of the flow components. CONCLUSION LV flow components' volume and their associated kinetic energy values are repeatable and stable within a population over time. However, the variability of these measurements in individuals over time is greater than can be attributed to sources of error in the data acquisition and analysis, suggesting that additional physiological factors may influence LV flow measurements.
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Affiliation(s)
- Victoria M. Stoll
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | - Margaret Loudon
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | - Jonatan Eriksson
- Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Malenka M. Bissell
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | - Petter Dyverfeldt
- Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Tino Ebbers
- Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Saul G. Myerson
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | - Stefan Neubauer
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | | | - Aaron T. Hess
- University of Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
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Salewski M, Nocente M, Jacobsen AS, Binda F, Cazzaniga C, Eriksson J, Geiger B, Gorini G, Hellesen C, Kiptily VG, Koskela T, Korsholm SB, Kurki-Suonio T, Leipold F, Moseev D, Nielsen SK, Rasmussen J, Schneider PA, Sharapov SE, Stejner M, Tardocchi M, JET Contributors, ASDEX Upgrade Team, EUROfusion MST1 Team. Bayesian Integrated Data Analysis of Fast-Ion Measurements by Velocity-Space Tomography. Fusion Science and Technology 2018. [DOI: 10.1080/15361055.2017.1380482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. Salewski
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | - M. Nocente
- University of Milano Bicocca, Department of Physics, Milano, Italy
- Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Milano, Italy
| | | | - F. Binda
- Uppsala University, Department of Physics and Astronomy, Uppsala, Sweden
| | - C. Cazzaniga
- ISIS Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, United Kingdom
| | - J. Eriksson
- Uppsala University, Department of Physics and Astronomy, Uppsala, Sweden
| | - B. Geiger
- Max-Planck-Institut für Plasmaphysik, Garching, Germany
| | - G. Gorini
- University of Milano Bicocca, Department of Physics, Milano, Italy
- Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Milano, Italy
| | - C. Hellesen
- Uppsala University, Department of Physics and Astronomy, Uppsala, Sweden
| | - V. G. Kiptily
- CCFE, Culham Science Centre, Abingdon, Oxon, United Kingdom
| | - T. Koskela
- Aalto University, Department of Applied Physics, Aalto, Finland
- NERSC, Lawrence Berkeley National Laboratory, Berkeley, California
| | - S. B. Korsholm
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | - T. Kurki-Suonio
- Aalto University, Department of Applied Physics, Aalto, Finland
| | - F. Leipold
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | - D. Moseev
- Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
| | - S. K. Nielsen
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | - J. Rasmussen
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | | | - S. E. Sharapov
- CCFE, Culham Science Centre, Abingdon, Oxon, United Kingdom
| | - M. Stejner
- Technical University of Denmark, Department of Physics, Kgs. Lyngby, Denmark
| | - M. Tardocchi
- Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Milano, Italy
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Touceda-González M, Prieto-Fernández Á, Renella G, Giagnoni L, Sessitsch A, Brader G, Kumpiene J, Dimitriou I, Eriksson J, Friesl-Hanl W, Galazka R, Janssen J, Mench M, Müller I, Neu S, Puschenreiter M, Siebielec G, Vangronsveld J, Kidd PS. Microbial community structure and activity in trace element-contaminated soils phytomanaged by Gentle Remediation Options (GRO). Environ Pollut 2017; 231:237-251. [PMID: 28802993 DOI: 10.1016/j.envpol.2017.07.097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 07/28/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
Gentle remediation options (GRO) are based on the combined use of plants, associated microorganisms and soil amendments, which can potentially restore soil functions and quality. We studied the effects of three GRO (aided-phytostabilisation, in situ stabilisation and phytoexclusion, and aided-phytoextraction) on the soil microbial biomass and respiration, the activities of hydrolase enzymes involved in the biogeochemical cycles of C, N, P, and S, and bacterial community structure of trace element contaminated soils (TECS) from six field trials across Europe. Community structure was studied using denaturing gradient gel electrophoresis (DGGE) fingerprinting of Bacteria, α- and β-Proteobacteria, Actinobacteria and Streptomycetaceae, and sequencing of DGGE bands characteristic of specific treatments. The number of copies of genes involved in ammonia oxidation and denitrification were determined by qPCR. Phytomanagement increased soil microbial biomass at three sites and respiration at the Biogeco site (France). Enzyme activities were consistently higher in treated soils compared to untreated soils at the Biogeco site. At this site, microbial biomass increased from 696 to 2352 mg ATP kg-1 soil, respiration increased from 7.4 to 40.1 mg C-CO2 kg-1 soil d-1, and enzyme activities were 2-11-fold higher in treated soils compared to untreated soil. Phytomanagement induced shifts in the bacterial community structure at both, the total community and functional group levels, and generally increased the number of copies of genes involved in the N cycle (nirK, nirS, nosZ, and amoA). The influence of the main soil physico-chemical properties and trace element availability were assessed and eventual site-specific effects elucidated. Overall, our results demonstrate that phytomanagement of TECS influences soil biological activity in the long term.
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Affiliation(s)
- M Touceda-González
- Instituto de Investigaciones Agrobiológicas de Galicia (IIAG), Consejo Superior de Investigaciones Científicas (CSIC), Aptdo. 122, Santiago de Compostela 15780, Spain.
| | - Á Prieto-Fernández
- Instituto de Investigaciones Agrobiológicas de Galicia (IIAG), Consejo Superior de Investigaciones Científicas (CSIC), Aptdo. 122, Santiago de Compostela 15780, Spain
| | - G Renella
- University of Florence, Department of Agrifood Production and Environmental Sciences, P.le delle Cascine 18, I-50144 Florence, Italy
| | - L Giagnoni
- University of Florence, Department of Agrifood Production and Environmental Sciences, P.le delle Cascine 18, I-50144 Florence, Italy
| | - A Sessitsch
- AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, 3430 Tulln, Austria
| | - G Brader
- AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, 3430 Tulln, Austria
| | - J Kumpiene
- Luleå University of Technology, Waste Science & Technology, SE-97187 Luleå, Sweden
| | - I Dimitriou
- Swedish University of Agriculture Sciences, Department of Crop Production Ecology, SE-750 07 Uppsala, Sweden
| | - J Eriksson
- Swedish University of Agriculture Sciences, Department of Soil and Environment, SE-750 07 Uppsala, 17, Sweden
| | - W Friesl-Hanl
- AIT Austrian Institute of Technology GmbH, Center for Energy, 3430 Tulln, Austria
| | - R Galazka
- Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Pulawy, Poland
| | - J Janssen
- Hasselt University, Centre for Environmental Sciences, 23 Agoralaan building D, B-3590 Diepenbeek, Belgium
| | - M Mench
- BIOGECO, INRA, Univ. Bordeaux, 33615 Pessac, France
| | - I Müller
- Saxon State Office for Environment, Agriculture and Geology, Pillnitzer Platz 3, 01326 Dresden Pillnitz, Germany
| | - S Neu
- Saxon State Office for Environment, Agriculture and Geology, Pillnitzer Platz 3, 01326 Dresden Pillnitz, Germany
| | - M Puschenreiter
- University of Natural Resources and Life Sciences Vienna - BOKU, Department of Forest and Soil Sciences, 3430 Tulln, Austria
| | - G Siebielec
- Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Pulawy, Poland
| | - J Vangronsveld
- Hasselt University, Centre for Environmental Sciences, 23 Agoralaan building D, B-3590 Diepenbeek, Belgium
| | - P S Kidd
- Instituto de Investigaciones Agrobiológicas de Galicia (IIAG), Consejo Superior de Investigaciones Científicas (CSIC), Aptdo. 122, Santiago de Compostela 15780, Spain
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Zajac J, Eriksson J, Alehagen U, Ebbers T, Bolger AF, Carlhäll CJ. Mechanical dyssynchrony alters left ventricular flow energetics in failing hearts with LBBB: a 4D flow CMR pilot study. Int J Cardiovasc Imaging 2017; 34:587-596. [PMID: 29098524 PMCID: PMC5859696 DOI: 10.1007/s10554-017-1261-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/19/2017] [Indexed: 11/23/2022]
Abstract
The impact of left bundle branch block (LBBB) related mechanical dyssynchrony on left ventricular (LV) diastolic function remains unclear. 4D flow cardiovascular magnetic resonance (CMR) has provided reliable markers of LV dysfunction: reduced volume and kinetic energy (KE) of the portion of LV inflow which passes directly to outflow (Direct Flow) has been demonstrated in failing hearts compared to normal hearts. We sought to investigate the impact of mechanical dyssynchrony on diastolic function by comparing 4D flow in myopathic LVs with and without LBBB. CMR data were acquired at 3 T in 22 heart failure patients; 11 with LBBB and 11 without LBBB matched according to several demographic and clinical parameters. An established 4D flow analysis method was used to separate the LV end-diastolic (ED) volume into functional flow components based on the blood’s timing and route through the heart cavities. While the Direct Flow volume was not different between the groups, the KE possessed at ED was lower in LBBB patients (P = 0.018). Direct Flow entering the LV during early diastolic filling possessed less KE at ED in LBBB patients compared to non-LBBB patients, whereas no intergroup difference was observed during late filling. Pre-systolic KE of LV Direct Flow was reduced in patients with LBBB compared to matched patients with normal conduction. These intriguing findings propose that 4D flow specific measures can serve as markers of LV mechanical dyssynchrony in heart failure patients, and could possibly be investigated as predictors of response to cardiac resynchronization therapy.
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Affiliation(s)
- Jakub Zajac
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden. .,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden. .,Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
| | - Jonatan Eriksson
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Urban Alehagen
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Tino Ebbers
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Ann F Bolger
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Carl-Johan Carlhäll
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.,Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
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Stenius-Ayoade A, Haaramo P, Kautiainen H, Sunikka S, Gissler M, Wahlbeck K, Eriksson J. Morbidity and housing 10-years after shelter use, a study of homeless men in Helsinki, 2004-2010. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.419] [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: 11/13/2022] Open
Affiliation(s)
| | - P Haaramo
- National Institute for Health and Welfare, Helsinki, Finland
| | | | - S Sunikka
- Kriminaalihuollon tukisäätiö, Helsinki, Finland
| | - M Gissler
- National Institute for Health and Welfare, Helsinki, Finland
| | - K Wahlbeck
- The Finnish Association for Mental Health, Helsinki, Finland
| | - J Eriksson
- National Institute for Health and Welfare, Helsinki, Finland
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Eriksson J. Demand-oriented and supply-oriented cost accounting systems complement each other in a regional healthcare system. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.361] [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
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Ongena J, Kazakov Y, Baranov Y, Hellesen C, Eriksson J, Johnson T, Kiptily V, Mantsinen M, Nocente M, Bilato R, Cardinali A, Castaldo C, Crombé K, Czarnecka A, Dumont R, Faustin J, Giacomelli L, Goloborodko V, Graves J, Jacquet P, Krawczyk N, Lerche E, Meneses L, Nave M, Patten H, Schneider M, Van Eester D, Weisen H, Wright J. Synergetic heating of D-NBI ions in the vicinity of the mode conversion layer in H-D plasmas in JET with the ITER like wall. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715702006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Stoll V, Hess A, Eriksson J, Bissell M, Dyverfeldt P, Ebbers T, Myerson S, Carlhall C, Neubauer S. 22244D flow components and kinetic energy: novel imaging biomarkers in heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.2224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jacobsen AS, Binda F, Cazzaniga C, Eriksson J, Hjalmarsson A, Nocente M, Salewski M, Tardini G. Velocity-space sensitivities of neutron emission spectrometers at the tokamaks JET and ASDEX Upgrade in deuterium plasmas. Rev Sci Instrum 2017; 88:073506. [PMID: 28764505 DOI: 10.1063/1.4991651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Future fusion reactors are foreseen to be heated by the energetic alpha particles produced in fusion reactions. For this to happen, it is important that the energetic ions are sufficiently confined. In present day fusion experiments, energetic ions are primarily produced using external heating systems such as neutral beam injection and ion cyclotron resonance heating. In order to diagnose these fast ions, several different fast-ion diagnostics have been developed and implemented in the various experiments around the world. The velocity-space sensitivities of fast-ion diagnostics are given by so-called weight functions. Here instrument-specific weight functions are derived for neutron emission spectrometry detectors at the tokamaks JET and ASDEX Upgrade for the 2.45 MeV neutrons produced in deuterium-deuterium reactions in deuterium plasmas. Using these, it is possible to directly determine which part of velocity space each detector observes.
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Affiliation(s)
- A S Jacobsen
- Max-Planck-Institut für Plasmaphysik, Garching, Germany
| | - F Binda
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - C Cazzaniga
- ISIS Facility, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot OX11 0QX, United Kingdom
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - A Hjalmarsson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - M Nocente
- Dipartimento di Fisca "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano, Italy
| | - M Salewski
- Department of Physics, Technical University of Denmark, Kongens Lyngby, Denmark
| | - G Tardini
- Max-Planck-Institut für Plasmaphysik, Garching, Germany
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Eriksson J, Zajac J, Alehagen U, Bolger AF, Ebbers T, Carlhäll CJ. Left ventricular hemodynamic forces as a marker of mechanical dyssynchrony in heart failure patients with left bundle branch block. Sci Rep 2017; 7:2971. [PMID: 28592851 PMCID: PMC5462838 DOI: 10.1038/s41598-017-03089-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 12/15/2016] [Accepted: 04/21/2017] [Indexed: 11/12/2022] Open
Abstract
Left bundle branch block (LBBB) causes left ventricular (LV) dyssynchrony which is often associated with heart failure. A significant proportion of heart failure patients do not demonstrate clinical improvement despite cardiac resynchronization therapy (CRT). How LBBB-related effects on LV diastolic function may contribute to those therapeutic failures has not been clarified. We hypothesized that LV hemodynamic forces calculated from 4D flow MRI could serve as a marker of diastolic mechanical dyssynchrony in LBBB hearts. MRI data were acquired in heart failure patients with LBBB or matched patients without LBBB. LV pressure gradients were calculated from the Navier-Stokes equations. Integration of the pressure gradients over the LV volume rendered the hemodynamic forces. The findings demonstrate that the LV filling forces are more orthogonal to the main LV flow direction in heart failure patients with LBBB compared to those without LBBB during early but not late diastole. The greater the conduction abnormality the greater the discordance of LV filling force with the predominant LV flow direction (r2 = 0.49). Such unique flow-specific measures of mechanical dyssynchrony may serve as an additional tool for considering the risks imposed by conduction abnormalities in heart failure patients and prove to be useful in predicting response to CRT.
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Affiliation(s)
- Jonatan Eriksson
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Jakub Zajac
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Urban Alehagen
- Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Ann F Bolger
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Department of Medicine, University of California, San Francisco, California, USA
| | - Tino Ebbers
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.,Division of Media and Information Technology, Department of Science and Technology/Swedish e-Science Research Centre (SeRC), Linköping University, Linköping, Sweden
| | - Carl-Johan Carlhäll
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden. .,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden. .,Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
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40
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Stoll V, Hess A, Eriksson J, Bissell M, Dyverfeldt P, Ebbers T, Myerson S, Carlhall CJ, Neubauer S. 112 Evaluation of patients with left ventricular thrombus using intra-cardiac blood visualisation with 4d flow. Heart 2017. [DOI: 10.1136/heartjnl-2017-311726.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Eriksson J, Andersson S, Appelqvist R, Wieslander E, Truedsson M, Bugge M, Malm J, Dahlbäck M, Andersson B, Fehniger TE, Marko-Varga G. Merging clinical chemistry biomarker data with a COPD database - building a clinical infrastructure for proteomic studies. Proteome Sci 2017; 15:8. [PMID: 28439209 PMCID: PMC5401459 DOI: 10.1186/s12953-017-0116-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 04/14/2017] [Indexed: 12/29/2022] Open
Abstract
Background Data from biological samples and medical evaluations plays an essential part in clinical decision making. This data is equally important in clinical studies and it is critical to have an infrastructure that ensures that its quality is preserved throughout its entire lifetime. We are running a 5-year longitudinal clinical study, KOL-Örestad, with the objective to identify new COPD (Chronic Obstructive Pulmonary Disease) biomarkers in blood. In the study, clinical data and blood samples are collected from both private and public health-care institutions and stored at our research center in databases and biobanks, respectively. The blood is analyzed by Mass Spectrometry and the results from this analysis then linked to the clinical data. Method We built an infrastructure that allows us to efficiently collect and analyze the data. We chose to use REDCap as the EDC (Electronic Data Capture) tool for the study due to its short setup-time, ease of use, and flexibility. REDCap allows users to easily design data collection modules based on existing templates. In addition, it provides two functions that allow users to import batches of data; through a web API (Application Programming Interface) as well as by uploading CSV-files (Comma Separated Values). Results We created a software, DART (Data Rapid Translation), that translates our biomarker data into a format that fits REDCap's CSV-templates. In addition, DART is configurable to work with many other data formats as well. We use DART to import our clinical chemistry data to the REDCap database. Conclusion We have shown that a powerful and internationally adopted EDC tool such as REDCap can be extended so that it can be used efficiently in proteomic studies. In our study, we accomplish this by using DART to translate our clinical chemistry data to a format that fits the templates of REDCap.
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Affiliation(s)
- Jonatan Eriksson
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden
| | | | - Roger Appelqvist
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden
| | - Elisabet Wieslander
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden
| | | | - May Bugge
- Örestadskliniken, 217 67, Eddagatan 4, 217 67 Malmö, Sweden
| | - Johan Malm
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Section for Clinical Chemistry, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, 205 02 Malmö, Sweden
| | - Magnus Dahlbäck
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden
| | - Bo Andersson
- Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden
| | - Thomas E Fehniger
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden
| | - György Marko-Varga
- Centre of Excellence in Biological and Medical Mass Spectrometry, Biomedical Centre D13, Lund University, 221 84 Lund, Sweden.,Clinical Protein Science & Imaging, Biomedical Centre, Department of Biomedical Engineering, Lund University, BMC D13, 221 84 Lund, Sweden.,First Department of Surgery, Tokyo Medical University, 6-7-1 Nishishinjiku Shinjiku-ku, Tokyo, 160-0023 Japan
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Cibis M, Bustamante M, Eriksson J, Carlhäll CJ, Ebbers T. Creating hemodynamic atlases of cardiac 4D flow MRI. J Magn Reson Imaging 2017; 46:1389-1399. [PMID: 28295788 PMCID: PMC5655727 DOI: 10.1002/jmri.25691] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/14/2017] [Indexed: 01/22/2023] Open
Abstract
Purpose Hemodynamic atlases can add to the pathophysiological understanding of cardiac diseases. This study proposes a method to create hemodynamic atlases using 4D Flow magnetic resonance imaging (MRI). The method is demonstrated for kinetic energy (KE) and helicity density (Hd). Materials and Methods Thirteen healthy subjects underwent 4D Flow MRI at 3T. Phase‐contrast magnetic resonance cardioangiographies (PC‐MRCAs) and an average heart were created and segmented. The PC‐MRCAs, KE, and Hd were nonrigidly registered to the average heart to create atlases. The method was compared with 1) rigid, 2) affine registration of the PC‐MRCAs, and 3) affine registration of segmentations. The peak and mean KE and Hd before and after registration were calculated to evaluate interpolation error due to nonrigid registration. Results The segmentations deformed using nonrigid registration overlapped (median: 92.3%) more than rigid (23.1%, P < 0.001), and affine registration of PC‐MRCAs (38.5%, P < 0.001) and affine registration of segmentations (61.5%, P < 0.001). The peak KE was 4.9 mJ using the proposed method and affine registration of segmentations (P = 0.91), 3.5 mJ using rigid registration (P < 0.001), and 4.2 mJ using affine registration of the PC‐MRCAs (P < 0.001). The mean KE was 1.1 mJ using the proposed method, 0.8 mJ using rigid registration (P < 0.001), 0.9 mJ using affine registration of the PC‐MRCAs (P < 0.001), and 1.0 mJ using affine registration of segmentations (P = 0.028). The interpolation error was 5.2 ± 2.6% at mid‐systole, 2.8 ± 3.8% at early diastole for peak KE; 9.6 ± 9.3% at mid‐systole, 4.0 ± 4.6% at early diastole, and 4.9 ± 4.6% at late diastole for peak Hd. The mean KE and Hd were not affected by interpolation. Conclusion Hemodynamic atlases can be obtained with minimal user interaction using nonrigid registration of 4D Flow MRI. Level of Evidence: 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2017;46:1389–1399.
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Affiliation(s)
- Merih Cibis
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Mariana Bustamante
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Jonatan Eriksson
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Carl-Johan Carlhäll
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.,Division of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Tino Ebbers
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
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43
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Zajac J, Eriksson J, Dyverfeldt P, Alehagen U, Ebbers T, Bolger A, Carlhall CJ. Left ventricular kinetic energy as a marker of mechanical dyssynchrony in failing hearts with LBBB: a 4D flow CMR study. J Cardiovasc Magn Reson 2016. [PMCID: PMC5032271 DOI: 10.1186/1532-429x-18-s1-o91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Erixon H, Eriksson J, Bolger A, Ebbers T, Karlsson L, Carlhall CJ. 4D flow CMR detects progressive improvement in ventricular function following cardioversion of atrial fibrillation. J Cardiovasc Magn Reson 2016. [PMCID: PMC5032125 DOI: 10.1186/1532-429x-18-s1-o89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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45
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Stoll V, Hess AT, Eriksson J, Dyverfeldt P, Ebbers T, Myerson SG, Carlhall CJ, Neubauer S. The kinetic energies of left ventricular 4D flow components correlate with established markers of prognosis and represent novel imaging biomarkers in both ischaemic and dilated cardiomyopathy. J Cardiovasc Magn Reson 2016. [PMCID: PMC5032302 DOI: 10.1186/1532-429x-18-s1-o68] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Eriksson J, Bolger AF, Ebbers T, Carlhäll CJ. Assessment of left ventricular hemodynamic forces in healthy subjects and patients with dilated cardiomyopathy using 4D flow MRI. Physiol Rep 2016; 4:4/3/e12685. [PMID: 26841965 PMCID: PMC4758930 DOI: 10.14814/phy2.12685] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [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: 11/24/2022] Open
Abstract
We hypothesized that the direction of global left ventricular (LV) hemodynamic forces during diastolic filling are concordant with the main flow axes in normal LVs, but that this pattern would be altered in dilated and dysfunctional LVs. Therefore, we aimed to assess the LV hemodynamic filling forces in a group of healthy subjects and compare them to the results from a group of patients with dilated cardiomyopathy (DCM). Ten healthy subjects and 10 DCM patients were enrolled. Morphological short‐ (SAx) and long‐axis (LAx) images and 4D flow MRI data were acquired at 1.5T. The LV pressure gradients were computed from the 4D flow data using the Navier–Stokes equations. By integrating the pressure gradients over the LV volume at each time frame, the magnitude and direction of the global hemodynamic force was calculated over the cardiac cycle. The hemodynamic forces acting in the SAx‐ and LAx‐directions were used to calculate the “SAx‐max/LAx‐max”‐ratio for the early (E‐wave) and late (A‐wave) diastolic filling. In the LAx‐plane, the temporal progression of the hemodynamic force followed a consistent pattern in the healthy subjects. The “SAx‐max/LAx‐max”‐ratio was significantly larger at both E‐wave (0.53 ± 0.15 vs. 0.23 ± 0.12, P < 0.0001) and A‐wave (0.44 ± 0.21 vs. 0.26 ± 0.09, P < 0.03) in the DCM patients compared to the healthy subjects. 4D flow MRI data allow quantification of LV hemodynamic forces acting on the LV myocardial wall. The LV hemodynamic filling forces showed a similar temporal progression among healthy subjects, whereas DCM patients had forces that were more heterogeneous in their direction and magnitude during diastole.
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Affiliation(s)
- Jonatan Eriksson
- Divsion of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Ann F Bolger
- Divsion of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden Department of Medicine, University of California, San Francisco, California
| | - Tino Ebbers
- Divsion of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden Division of Media and Information Technology, Department of Science and Technology/Swedish e-Science Research Centre (SeRC), Linköping University, Linköping, Sweden
| | - Carl-Johan Carlhäll
- Divsion of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
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47
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Svalbring E, Fredriksson A, Eriksson J, Dyverfeldt P, Ebbers T, Bolger AF, Engvall J, Carlhäll CJ. Altered Diastolic Flow Patterns and Kinetic Energy in Subtle Left Ventricular Remodeling and Dysfunction Detected by 4D Flow MRI. PLoS One 2016; 11:e0161391. [PMID: 27532640 PMCID: PMC4988651 DOI: 10.1371/journal.pone.0161391] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 08/04/2016] [Indexed: 01/24/2023] Open
Abstract
AIMS 4D flow magnetic resonance imaging (MRI) allows quantitative assessment of left ventricular (LV) function according to characteristics of the dynamic flow in the chamber. Marked abnormalities in flow components' volume and kinetic energy (KE) have previously been demonstrated in moderately dilated and depressed LV's compared to healthy subjects. We hypothesized that these 4D flow-based measures would detect even subtle LV dysfunction and remodeling. METHODS AND RESULTS We acquired 4D flow and morphological MRI data from 26 patients with chronic ischemic heart disease with New York Heart Association (NYHA) class I and II and with no to mild LV systolic dysfunction and remodeling, and from 10 healthy controls. A previously validated method was used to separate the LV end-diastolic volume (LVEDV) into functional components: direct flow, which passes directly to ejection, and non-ejecting flow, which remains in the LV for at least 1 cycle. The direct flow and non-ejecting flow proportions of end-diastolic volume and KE were assessed. The proportions of direct flow volume and KE fell with increasing LVEDV-index (LVEDVI) and LVESV-index (LVESVI) (direct flow volume r = -0.64 and r = -0.74, both P<0.001; direct flow KE r = -0.48, P = 0.013, and r = -0.56, P = 0.003). The proportions of non-ejecting flow volume and KE rose with increasing LVEDVI and LVESVI (non-ejecting flow volume: r = 0.67 and r = 0.76, both P<0.001; non-ejecting flow KE: r = 0.53, P = 0.005 and r = 0.52, P = 0.006). The proportion of direct flow volume correlated moderately to LVEF (r = 0.68, P < 0.001) and was higher in a sub-group of patients with LVEDVI >74 ml/m2 compared to patients with LVEDVI <74 ml/m2 and controls (both P<0.05). CONCLUSION Direct flow volume and KE proportions diminish with increased LV volumes, while non-ejecting flow proportions increase. A decrease in direct flow volume and KE at end-diastole proposes that alterations in these novel 4D flow-specific markers may detect LV dysfunction even in subtle or subclinical LV remodeling.
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Affiliation(s)
- Emil Svalbring
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Alexandru Fredriksson
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Jonatan Eriksson
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Petter Dyverfeldt
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Tino Ebbers
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Ann F Bolger
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Department of Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Jan Engvall
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
- Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Carl-Johan Carlhäll
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
- Department of Clinical Physiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
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48
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Helgesson A, Johansson UB, Walther-Stenmark K, Eriksson J, Strömgren M, Karlsson R. Coordinated care planning for elderly patients using videoconferencing. J Telemed Telecare 2016; 11:85-92. [PMID: 15829052 DOI: 10.1258/1357633053499868] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We studied the transfer of information during coordinated care planning between a university hospital and a local health care centre/social welfare department about 35 km away. During a seven-month study period, 10 sessions were conducted by videoconferencing and seven sessions were conducted by face-to-face conferencing. Videoconferencing reduced the time required for each coordinated care-planning session from an average of 60 to 45 min. There was also an increase in the number of participating professional categories. Travel time for the staff in the face-to-face group was 60–180 min each. Use of a care-planning report during the sessions resulted in improved quality of documentation, which contributed to better care following discharge. The technical problems that occurred did not detract from the beneficial experience of participating. Interviews with next of kin showed that they had been able to influence the content of the care during the care-planning sessions. Videoconferencing proved useful in coordinated care planning. It resulted in time saved due to reduced travel time, participation by more staff categories and an enhancement of the documentation quality.
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49
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Bjerg A, Ekerljung L, Eriksson J, Näslund J, Sjölander S, Rönmark E, Dahl Å, Holmberg K, Wennergren G, Torén K, Borres MP, Lötvall J, Lundbäck B. Increase in pollen sensitization in Swedish adults and protective effect of keeping animals in childhood. Clin Exp Allergy 2016; 46:1328-36. [PMID: 27159904 DOI: 10.1111/cea.12757] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 04/26/2016] [Accepted: 04/29/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND To date, most studies of the 'allergy epidemic' have been based on self-reported data. There is still limited knowledge on time trends in allergic sensitization, especially among adults. OBJECTIVE To study allergic sensitization, its risk factors and time trends in prevalence. METHODS Within West Sweden Asthma Study (WSAS), a population-based sample of 788 adults (17-60 years) underwent skin prick tests (SPTs) for 11 aeroallergens 2009-2012. Specific IgE was analysed in 750 of the participants. Those aged 20-46 years (n = 379) were compared with the European Community Respiratory Health Survey sample aged 20-46 year from the same area (n = 591) in 1991-1992. RESULTS Among those aged 20-46 years, the prevalence of positive SPT to pollen increased, timothy from 17.1% to 29.0% (P < 0.001) and birch from 15.6% to 23.7% (P = 0.002) between 1991-1992 and 2009-2012. Measurements of specific IgE confirmed these increases. Prevalence of sensitization to all other tested allergens was unchanged. In the full WSAS sample aged 17-60 years, any positive SPT was seen in 41.9%, and the dominating sensitizers were pollen (34.3%), animals (22.8%) and mites (12.6%). Pollen sensitization was strongly associated with rhinitis, whereas indoor allergens were more associated with asthma. Growing up with livestock or furred pets decreased the risk of sensitization, adjusted odds ratio 0.53 (0.28-0.995) and 0.68 (0.47-0.98), respectively. CONCLUSION Pollen sensitization has increased in Swedish adults since the early 1990s, while the prevalence of sensitization to other allergens has remained unchanged. This is one plausible explanation for the increase in rhinitis 1990-2008 in Swedish adults, during which time the prevalence of asthma, which is more associated with perennial allergens, was stable. Contact with animals in childhood seems to reduce the risk of sensitization well into adulthood. One major factor contributing to the rise in pollen allergy is a significant increase in levels of birch and grass pollen over the past three decades.
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Affiliation(s)
- A Bjerg
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden. .,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.
| | - L Ekerljung
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden
| | - J Eriksson
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden
| | - J Näslund
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden
| | - S Sjölander
- ImmunoDiagnostics, ThermoFisher Scientific, Uppsala, Sweden
| | - E Rönmark
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden.,Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, the OLIN Unit, Umeå, Sweden
| | - Å Dahl
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - K Holmberg
- Department of Otorhinolaryngology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - G Wennergren
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden.,Department of Pediatrics, Gothenburg University, Gothenburg, Sweden
| | - K Torén
- Department of Public Health and Community Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - M P Borres
- Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.,Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - J Lötvall
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden
| | - B Lundbäck
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Gothenburg University, Göteborg, Sweden
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Saevarsdottir S, Klareskog L, Hansson M, Eriksson J, Johannesson M, Holmdahl R, Skriner K, Serre G, Mathsson-Alm L, van Vollenhoven R, van der Woude D, Allaart R, Alfredsson L, McInnes I, Rönnelid J, Askling J. SAT0085 Do Specific Acpas or Other Autoantibodies Measured by A Novel Assay Predict Response To Methotrexate Monotherapy in Patients with Early Dmard-Naïve Ra? Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4451] [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: 11/04/2022]
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