1
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Jacobsson A, Johansson G, Gorbatov OI, Ležaić M, Sanyal B, Blügel S, Etz C. Efficient parameterisation of non-collinear energy landscapes in itinerant magnets. Sci Rep 2022; 12:18987. [PMID: 36347896 PMCID: PMC9643378 DOI: 10.1038/s41598-022-20311-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/01/2022] [Indexed: 11/09/2022] Open
Abstract
Magnetic exchange interactions determine the magnetic groundstate, as well as magnetic excitations of materials and are thus essential to the emerging and fast evolving fields of spintronics and magnonics. The magnetic force theorem has been used extensively for studying magnetic exchange interactions. However, short-ranged interactions in itinerant magnetic systems are poorly described by this method and numerous strategies have been developed over the years to overcome this deficiency. The present study supplies a fully self-consistent method for systematic investigations of exchange interactions beyond the standard Heisenberg model. In order to better describe finite deviations from the magnetic ground state, an extended Heisenberg model, including multi-spin interactions, is suggested. Using cross-validation analysis, we show that this extended Heisenberg model gives a superior description for non-collinear magnetic configurations. This parameterisation method allows us to describe many different itinerant magnetic systems and can be useful for high-throughput calculations.
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2
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Fredén E, Knutsson J, Johansson G. PO-1489 Residual setup error of the pelvic lymph nodes after prostate based IGRT of prostate cancer patients. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03453-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Lideståhl A, Johansson G, Siegbahn A, Lind P. PO-1788 Estimated risk of radiation-induced cancer after thymoma treatments with proton- or x-ray beams. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08239-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Agustí A, Chang CWS, Quijandría F, Johansson G, Wilson CM, Sabín C. Tripartite Genuine Non-Gaussian Entanglement in Three-Mode Spontaneous Parametric Down-Conversion. Phys Rev Lett 2020; 125:020502. [PMID: 32701323 DOI: 10.1103/physrevlett.125.020502] [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: 01/31/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
We show that the states generated by a three-mode spontaneous parametric down-conversion (SPDC) interaction Hamiltonian possess tripartite entanglement of a different nature to other paradigmatic three-mode entangled states generated by the combination of two-mode SPDC interactions. While two-mode SPDC generates Gaussian states whose entanglement can be characterized by standard criteria based on two-mode quantum correlations, these criteria fail to capture the entanglement generated by three-mode SPDC. We use criteria built from three-mode correlation functions to show that the class of states recently generated in a superconducting-circuit implementation of three-mode SPDC ideally have tripartite entanglement, contrary to recent claims in the literature. These criteria are suitable for triple SPDC but we show that they fail to detect tripartite entanglement in other states which are known to possess it, which illustrates the existence of two fundamentally different notions of tripartite entanglement in three-mode continuous-variable systems.
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Affiliation(s)
- A Agustí
- Instituto de Física Fundamental, CSIC, Serrano, 113-bis, 28006 Madrid, Spain
| | - C W Sandbo Chang
- Institute for Quantum Computing and Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - F Quijandría
- Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - G Johansson
- Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - C M Wilson
- Institute for Quantum Computing and Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - C Sabín
- Instituto de Física Fundamental, CSIC, Serrano, 113-bis, 28006 Madrid, Spain
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5
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Schneider BH, Bengtsson A, Svensson IM, Aref T, Johansson G, Bylander J, Delsing P. Observation of Broadband Entanglement in Microwave Radiation from a Single Time-Varying Boundary Condition. Phys Rev Lett 2020; 124:140503. [PMID: 32338986 DOI: 10.1103/physrevlett.124.140503] [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: 09/22/2018] [Revised: 02/28/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
Entangled pairs of microwave photons are commonly produced in the narrow frequency band of a resonator, which represents a modified vacuum density of states. We generate and investigate the entanglement of a stream of photon pairs, generated in a semi-infinite broadband transmission line, terminated by a superconducting quantum interference device (SQUID). A weak pump signal modulates the SQUID inductance, resulting in a single time-varying boundary condition, and we detect all four quadratures of the microwave radiation emitted at two different frequencies separated by 0.7 GHz. Power calibration is done in situ, and we find positive logarithmic negativity and two-mode squeezing below the vacuum in the observed radiation, indicating entanglement.
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Affiliation(s)
- B H Schneider
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - A Bengtsson
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - I M Svensson
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - T Aref
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - G Johansson
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Jonas Bylander
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - P Delsing
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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6
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Loera-Valencia R, Cedazo-Minguez A, Kenigsberg PA, Page G, Duarte AI, Giusti P, Zusso M, Robert P, Frisoni GB, Cattaneo A, Zille M, Boltze J, Cartier N, Buee L, Johansson G, Winblad B. Current and emerging avenues for Alzheimer's disease drug targets. J Intern Med 2019; 286:398-437. [PMID: 31286586 DOI: 10.1111/joim.12959] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [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: 12/18/2022]
Abstract
Alzheimer's disease (AD), the most frequent cause of dementia, is escalating as a global epidemic, and so far, there is neither cure nor treatment to alter its progression. The most important feature of the disease is neuronal death and loss of cognitive functions, caused probably from several pathological processes in the brain. The main neuropathological features of AD are widely described as amyloid beta (Aβ) plaques and neurofibrillary tangles of the aggregated protein tau, which contribute to the disease. Nevertheless, AD brains suffer from a variety of alterations in function, such as energy metabolism, inflammation and synaptic activity. The latest decades have seen an explosion of genes and molecules that can be employed as targets aiming to improve brain physiology, which can result in preventive strategies for AD. Moreover, therapeutics using these targets can help AD brains to sustain function during the development of AD pathology. Here, we review broadly recent information for potential targets that can modify AD through diverse pharmacological and nonpharmacological approaches including gene therapy. We propose that AD could be tackled not only using combination therapies including Aβ and tau, but also considering insulin and cholesterol metabolism, vascular function, synaptic plasticity, epigenetics, neurovascular junction and blood-brain barrier targets that have been studied recently. We also make a case for the role of gut microbiota in AD. Our hope is to promote the continuing research of diverse targets affecting AD and promote diverse targeting as a near-future strategy.
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Affiliation(s)
- R Loera-Valencia
- Division of Neurogeriatrics, Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Solna, Sweden
| | - A Cedazo-Minguez
- Division of Neurogeriatrics, Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Solna, Sweden
| | | | - G Page
- Neurovascular Unit and Cognitive impairments - EA3808, University of Poitiers, Poitiers, France
| | - A I Duarte
- CNC- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - P Giusti
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Padova, Italy
| | - M Zusso
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Padova, Italy
| | - P Robert
- CoBTeK - lab, CHU Nice University Côte d'Azur, Nice, France
| | - G B Frisoni
- University Hospitals and University of Geneva, Geneva, Switzerland
| | - A Cattaneo
- University Hospitals and University of Geneva, Geneva, Switzerland
| | - M Zille
- Institute of Experimental and Clinical Pharmacology and Toxicology, Lübeck, Germany
| | - J Boltze
- School of Life Sciences, The University of Warwick, Coventry, UK
| | - N Cartier
- Preclinical research platform, INSERM U1169/MIRCen Commissariat à l'énergie atomique, Fontenay aux Roses, France.,Université Paris-Sud, Orsay, France
| | - L Buee
- Alzheimer & Tauopathies, LabEx DISTALZ, CHU-Lille, Inserm, Univ. Lille, Lille, France
| | - G Johansson
- Division of Neurogeriatrics, Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Solna, Sweden
| | - B Winblad
- Division of Neurogeriatrics, Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Solna, Sweden.,Theme Aging, Karolinska University Hospital, Stockholm, Sweden
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7
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Affiliation(s)
- B Winblad
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, Solna, Sweden.,Theme Aging, Karolinska University Hospital, Stockholm, Sweden
| | - M Ankarcrona
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, Solna, Sweden
| | - G Johansson
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, Solna, Sweden
| | - P Novak
- Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia.,AXON Neuroscience CRM Services SE, Bratislava, Slovakia
| | - E Peter Thelin
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.,Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - H Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.,UK Dementia Research Institute at UCL, London, UK.,Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
| | - K Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
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8
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Zetterberg H, Winblad B, Bernick C, Yaffe K, Majdan M, Johansson G, Newcombe V, Nyberg L, Sharp D, Tenovuo O, Blennow K. Head trauma in sports - clinical characteristics, epidemiology and biomarkers. J Intern Med 2019; 285:624-634. [PMID: 30481401 DOI: 10.1111/joim.12863] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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: 01/18/2023]
Abstract
Traumatic brain injury (TBI) is clinically divided into a spectrum of severities, with mild TBI being the least severe form and a frequent occurrence in contact sports, such as ice hockey, American football, rugby, horse riding and boxing. Mild TBI is caused by blunt nonpenetrating head trauma that causes movement of the brain and stretching and tearing of axons, with diffuse axonal injury being a central pathogenic mechanism. Mild TBI is in principle synonymous with concussion; both have similar criteria in which the most important elements are acute alteration or loss of consciousness and/or post-traumatic amnesia following head trauma and no apparent brain changes on standard neuroimaging. Symptoms in mild TBI are highly variable and there are no validated imaging or fluid biomarkers to determine whether or not a patient with a normal computerized tomography scan of the brain has neuronal damage. Mild TBI typically resolves within a few weeks but 10-15% of concussion patients develop postconcussive syndrome. Repetitive mild TBI, which is frequent in contact sports, is a risk factor for a complicated recovery process. This overview paper discusses the relationships between repetitive head impacts in contact sports, mild TBI and chronic neurological symptoms. What are these conditions, how common are they, how are they linked and can they be objectified using imaging or fluid-based biomarkers? It gives an update on the current state of research on these questions with a specific focus on clinical characteristics, epidemiology and biomarkers.
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Affiliation(s)
- H Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.,UK Dementia Research Institute at UCL, London, UK.,Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
| | - B Winblad
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, Huddinge, Sweden.,Department of Geriatric Medicine, Karolinska University Hospital, Huddinge, Sweden
| | - C Bernick
- Neurological Institute, Cleveland Clinic, Las Vegas, NV, USA
| | - K Yaffe
- Department of Psychiatry, University of California, San Francisco, San Francisco, CA, USA.,San Francisco Veterans Affairs Health Care System, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA.,Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - M Majdan
- Department of Public Health, Faculty of Health Sciences and Social Work, Trnava University, Trnava, Slovakia
| | - G Johansson
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, Huddinge, Sweden.,Department of Geriatric Medicine, Karolinska University Hospital, Huddinge, Sweden
| | - V Newcombe
- Division of Anaesthesia, University of Cambridge, Addenbrookes Hospital, Cambridge, Cambs, UK
| | - L Nyberg
- Centre for Functional Brain Imaging, Umeå University, Umeå, Sweden
| | - D Sharp
- Division of Brain Sciences, Department of Medicine, Imperial College London, London, UK
| | - O Tenovuo
- Turku Brain Injury Centre, Turku University Hospital, Turku, Finland.,Department of Neurology, University of Turku, Turku, Finland
| | - K Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
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9
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Björk A, Ribom E, Johansson G, Scragg R, Mellström D, Grundberg E, Ohlsson C, Karlsson M, Ljunggren Ö, Kindmark A. Variations in the vitamin D receptor gene are not associated with measures of muscle strength, physical performance, or falls in elderly men. Data from MrOS Sweden. J Steroid Biochem Mol Biol 2019; 187:160-165. [PMID: 30476589 DOI: 10.1016/j.jsbmb.2018.11.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 11/17/2018] [Accepted: 11/23/2018] [Indexed: 01/07/2023]
Abstract
The vitamin D receptor (VDR) has been proposed as a candidate gene for several musculoskeletal phenotypes. However, previous results on the associations between genetic variants of the VDR with muscle strength and falls have been contradictory. The MrOS Sweden survey, a prospective population-based cohort study of 3014 elderly men (mean age 75 years, range 69-81) offered the opportunity to further investigate these associations. At baseline, data were collected on muscle strength and also the prevalence of falls during the previous 12 months. Genetic association analysis was performed for 7 Single Nucleotide Polymorphisms (SNPs), covering the genetic region surrounding the VDR gene in 2924 men with available samples of DNA. Genetic variations in the VDR were not associated with five different measurements of muscle strength or physical performance (hand grip strength right and left, 6 m walking test (easy and narrow) and timed-stands test). However, one of the 7 SNPs of the gene for the VDR receptor, rs7136534, was associated with prevalence of falls (33.6% of the AA, 14.6% of the AG and 16.5% of the GG allele). In conclusion, VDR genetic variants are not related to muscle strength or physical performance in elderly Swedish men. The role of the rs7136534 SNP for the occurrence of falls is not clear.
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Affiliation(s)
- A Björk
- Department of Medical Sciences, Endocrinology and Mineral Metabolism, Uppsala University, Uppsala, Sweden.
| | - E Ribom
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - G Johansson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - R Scragg
- Section of Epidemiology & Biostatistics, School of Population Health, University of Auckland, Auckland, New Zealand
| | - D Mellström
- Geriatric Medicine, Department of Internal Medicine and Clinical, Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - E Grundberg
- Department of Human Genetics, McGill University and Genome Quebec Innovation Centre, McGill University, Montreal, Quebec, Canada
| | - C Ohlsson
- Center for Bone and Arthritis Research at the Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - M Karlsson
- Department of Clinical Sciences and Orthopedic Surgery, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Ö Ljunggren
- Department of Medical Sciences, Endocrinology and Mineral Metabolism, Uppsala University, Uppsala, Sweden
| | - A Kindmark
- Department of Medical Sciences, Endocrinology and Mineral Metabolism, Uppsala University, Uppsala, Sweden
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10
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Ewe M, Lydell M, Månsson J, Johansson G, Hildingh C. Dietary advice on prescription: experiences with a weight reduction programme. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky218.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Ewe
- Department of Public Health and Community Medicine, Primary Health Care, Sahlgrenska Academy, Gothenburg, Sweden
| | - M Lydell
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
| | - J Månsson
- Department of Public Health and Community Medicine, Primary Health Care, Sahlgrenska Academy, Gothenburg, Sweden
| | - G Johansson
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
| | - C Hildingh
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
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11
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Svensson IM, Pierre M, Simoen M, Wustmann W, Krantz P, Bengtsson A, Johansson G, Bylander J, Shumeiko V, Delsing P. Microwave photon generation in a doubly tunable superconducting resonator. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/969/1/012146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Johansson G, Brännström T, Andersson U, Golovleva I, Melin B. P10.15 Molecular Classification of Malignant Glioma. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.333] [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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13
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Banefelt J, Hallberg S, Fox KM, Mesterton J, Paoli CJ, Johansson G, Levin LÅ, Sobocki P, Gandra SR. Work productivity loss and indirect costs associated with new cardiovascular events in high-risk patients with hyperlipidemia: estimates from population-based register data in Sweden. Eur J Health Econ 2016; 17:1117-1124. [PMID: 26607457 PMCID: PMC5080301 DOI: 10.1007/s10198-015-0749-y] [Citation(s) in RCA: 18] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 11/11/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES To estimate productivity loss and associated indirect costs in high-risk patients treated for hyperlipidemia who experience cardiovascular (CV) events. METHODS Retrospective population-based cohort study conducted using Swedish medical records linked to national registers. Patients were included based on prescriptions of lipid-lowering therapy between 1 January 2006 and 31 December 2011 and followed until 31 December 2012 for identification of CV events and estimation of work productivity loss (sick leave and disability pension) and indirect costs. Patients were stratified into two cohorts based on CV risk level: history of major cardiovascular disease (CVD) and coronary heart disease (CHD) risk equivalent. Propensity score matching was applied to compare patients with new events (cases) to patients without new events (controls). The incremental effect of CV events was estimated using a difference-in-differences design, comparing productivity loss among cases and controls during the year before and the year after the cases' event. RESULTS The incremental effect on indirect costs was largest in the CHD risk equivalent cohort (n = 2946) at €3119 (P value <0.01). The corresponding figure in the major CVD history cohort (n = 4508) was €2210 (P value <0.01). There was substantial variation in productivity loss depending on the type of event. Transient ischemic attack and revascularization had no significant effect on indirect costs. Myocardial infarction (€3465), unstable angina (€2733) and, most notably, ischemic stroke (€6784) yielded substantial incremental cost estimates (P values <0.01). CONCLUSIONS Indirect costs related to work productivity losses of CV events are substantial in Swedish high-risk patients treated for hyperlipidemia and vary considerably by type of event.
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Affiliation(s)
- J Banefelt
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden.
| | - S Hallberg
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden
| | - K M Fox
- Strategic Healthcare Solutions, LLC, Baltimore, MD, USA
| | - J Mesterton
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
| | | | - G Johansson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - L-Å Levin
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - P Sobocki
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
- IMS Health, Stockholm, Sweden
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14
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Johansson G, Jansen C, Tol MVD, Ariely R, Bergman G, Uhde M, Sobocki P, Benhaddi H. P140 Comorbidities of swedish patients diagnosed with chronic obstructive pulmonary disease (COPD) and/or asthma. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.283] [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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15
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Ludvigsson ML, Peolsson A, Peterson G, Dedering Å, Johansson G, Bernfort L. Cost-effectiveness of neck-specific exercise in the treatment of chronic whiplash associated disorders. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.math.2016.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Naqvi G, Johansson G, Yip G, Rehm A, Carrothers A, Stöhr K. Mechanisms, patterns and outcomes of paediatric polytrauma in a UK major trauma centre. Ann R Coll Surg Engl 2016; 99:39-45. [PMID: 27490985 DOI: 10.1308/rcsann.2016.0222] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction Paediatric trauma is a significant burden to healthcare worldwide and accounts for a large proportion of deaths in the UK. Methods This retrospective study examined the epidemiological data from a major trauma centre in the UK between January 2012 and December 2014, reviewing all cases of moderate to severe trauma in children. Patients were included if aged ≤16 years and if they had an abbreviated injury scale score of ≥2 in one or more body region. Results A total of 213 patients were included in the study, with a mean age of 7.8 years (standard deviation [SD]: 5.2 years). The most common cause of injury was vehicle related incidents (46%). The median length of hospital stay was 5 days (interquartile range [IQR]: 4-10 days). Approximately half (52%) of the patients had to stay in the intensive care unit, for a median of 1 day (IQR: 0-2 days). The mortality rate was 6.6%. The mean injury severity score was 19 (SD: 10). Pearson's correlation coefficient showed a positive correlation for injury severity score with length of stay in hospital (p<0.001). Conclusions There is significant variation in mechanism of injury, severity and pattern of paediatric trauma across age groups. A multidisciplinary team approach is imperative, and patients should be managed in specialist centres to optimise their care and eventual functional recovery. Head injury remained the most common, with significant mortality in all age groups. Rib fractures and pelvic fractures should be considered a marker for the severity of injury, and should alert doctors to look for other associated injuries.
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Affiliation(s)
- G Naqvi
- Cambridge University Hospitals NHS Foundation Trust , UK
| | | | - G Yip
- Cambridge University Hospitals NHS Foundation Trust , UK
| | - A Rehm
- Cambridge University Hospitals NHS Foundation Trust , UK
| | - A Carrothers
- Cambridge University Hospitals NHS Foundation Trust , UK
| | - K Stöhr
- Cambridge University Hospitals NHS Foundation Trust , UK
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17
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Affiliation(s)
- J Johansson
- Department of Neurobiology, Care Sciences and Society (NVS), Center for Alzheimer Research, Karolinska Institutet, Huddinge, Sweden
| | - L Olson
- Department of Neuroscience, Retzius Laboratory, Karolinska Institutet, Stockholm, Sweden
| | - J Andersson
- Department of Medicine, Center for Infectious Medicine (CIM), Karolinska Institutet, Stockholm, Sweden
| | - G Johansson
- Department of Neurobiology, Care Sciences and Society (NVS), Center for Alzheimer Research, Karolinska Institutet, Huddinge, Sweden
| | - B Winblad
- Department of Neurobiology, Care Sciences and Society (NVS), Center for Alzheimer Research, Karolinska Institutet, Huddinge, Sweden
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18
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Abstract
Monocular perception of absolute distances in near space (<2 m) is discussed and studied experimentally. Stimulus change in time and sensory co-action (visual plus kinestethic) are in the theoretical analysis regarded as essential. Therefore movement parallax due to voluntary head movements has been introduced, in the experiments, as a hypothetical main cue, and perspective pattern transformation as a probably important side cue together with accommodation. (In ‘natural’ monocular perception these cues, in combination, are always available in near-space perception.) Under these experimental conditions all subjects exhibited approximately adequate (veridical) distance perception. This positive result, which diverges from the commonly accepted views about absolute-distance information, is tentatively regarded as an effect of the combination of cues and of methodological improvements introduced in the experiments. The result is taken as an indication of the fruitfulness of Gibson's conception of perceptual systems.
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Affiliation(s)
- G Johansson
- Department of Psychology, University of Uppsala, Uppsala, Sweden
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19
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Blomgren L, Zethraeus N, Johansson G, Jönsson B, Bergqvist D. Cost consequences of preoperative duplex examination before varicose vein surgery: a randomized clinical trial. Phlebology 2016. [DOI: 10.1258/026835506777304728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objectives: To investigate the cost consequences of the addition of a duplex scan to the routine clinical examination prior to surgery for varicose veins (VV). Methods: Cost data are based on a prospective study, which randomized 293 VV patients for surgery either with or without a preoperative duplex scan. Costs are collected during a two-year follow-up time and include direct costs for primary surgery and reoperation. Results: The mean cost for the primary operation was SEK 12,827 (€1410) in the duplex group and SEK 9856 (€1083) in the control group ( P<0.001). A significant part of this increase was due to more extensive primary surgery. Costs for redo surgery decreased by SEK 1131 (€124) ( P = 0.011). The mean net cost increase because of duplex is estimated to be SEK 1840 (€202) ( P<0.003). Conclusion: The savings in costs for redo surgery did not offset the costs for preoperative duplex examination before VV surgery during a two-year follow-up period.
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Affiliation(s)
- L Blomgren
- Department of Surgery, Capio St Göran's Hospital, Stockholm, Sweden
| | - N Zethraeus
- Stockholm School of Economics, Centre for Health Economics, Stockholm, Sweden
| | - G Johansson
- Department of Surgery, Capio St Göran's Hospital, Stockholm, Sweden
| | - B Jönsson
- Stockholm School of Economics, Centre for Health Economics, Stockholm, Sweden
| | - D Bergqvist
- Department of Surgery, University Hospital, Uppsala, Sweden
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20
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Hallberg S, Gandra SR, Fox KM, Mesterton J, Banefelt J, Johansson G, Levin LÅ, Sobocki P. Healthcare costs associated with cardiovascular events in patients with hyperlipidemia or prior cardiovascular events: estimates from Swedish population-based register data. Eur J Health Econ 2016; 17:591-601. [PMID: 26077550 PMCID: PMC4869759 DOI: 10.1007/s10198-015-0702-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 02/04/2015] [Accepted: 05/27/2015] [Indexed: 05/25/2023]
Abstract
OBJECTIVES To estimate healthcare costs of new cardiovascular (CV) events (myocardial infarction, unstable angina, revascularization, ischemic stroke, transient ischemic attack, heart failure) in patients with hyperlipidemia or prior CV events. METHODS A retrospective population-based cohort study was conducted using Swedish national registers and electronic medical records. Patients with hyperlipidemia or prior CV events were stratified into three cohorts based on CV risk level: history of major cardiovascular disease (CVD), coronary heart disease (CHD) risk-equivalent, and low/unknown risk. Propensity score matching was applied to compare patients with new events to patients without new events for estimation of incremental costs of any event and by event type. RESULTS A CV event resulted in increased costs over 3 years of follow-up, with the majority of costs occurring in the 1st year following the event. The mean incremental cost of patients with a history of major CVD (n = 6881) was €8588 during the 1st year following the event. This was similar to that of CHD risk-equivalent patients (n = 3226; €6663) and patients at low/unknown risk (n = 2497; €8346). Ischemic stroke resulted in the highest 1st-year cost for patients with a history of major CVD and CHD risk-equivalent patients (€10,194 and €9823, respectively); transient ischemic attack in the lowest (€3917 and €4140). Incremental costs remained elevated in all cohorts during all three follow-up years, with costs being highest in the major CVD history cohort. CONCLUSIONS Healthcare costs of CV events are substantial and vary considerably by event type. Incremental costs remain elevated for several years after an event.
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Affiliation(s)
- S Hallberg
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden.
| | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Baltimore, MD, USA
| | - J Mesterton
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
| | - J Banefelt
- Quantify Research, Hantverkargatan 8, 112 21, Stockholm, Sweden
| | - G Johansson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - L-Å Levin
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - P Sobocki
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
- IMS Health, Stockholm, Sweden
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21
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Hallberg S, Banefelt J, Fox KM, Mesterton J, Johansson G, Levin LÅ, Sobocki P, Gandra SR. Lipid-lowering treatment patterns in patients with new cardiovascular events - estimates from population-based register data in Sweden. Int J Clin Pract 2016; 70:222-8. [PMID: 26799539 PMCID: PMC4819716 DOI: 10.1111/ijcp.12769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVES The aim of this study was to assess treatment patterns of lipid-lowering therapy (LLT) in patients with hyperlipidaemia or prior cardiovascular (CV) events who experience new CV events. METHODS A retrospective population-based cohort study was conducted using Swedish medical records and registers. Patients were included in the study based on a prescription of LLT or CV event history and followed up for up to 7 years for identification of new CV events and assessment of LLT treatment patterns. Patients were stratified into three cohorts based on CV risk level. All outcomes were assessed during the year following index (the date of first new CV event). Adherence was defined as medication possession ratio (MPR) > 0.80. Persistence was defined as no gaps > 60 days in supply of drug used at index. RESULTS Of patients with major cardiovascular disease (CVD) history (n = 6881), 49% were not on LLT at index. Corresponding data for CV risk equivalent and low/unknown CV risk patients were 37% (n = 3226) and 38% (n = 2497) respectively. MPR for patients on LLT at index was similar across cohorts (0.74-0.75). The proportions of adherent (60-63%) and persistent patients (56-57%) were also similar across cohorts. Dose escalation from dose at index was seen within all cohorts and 2-3% of patients switched to a different LLT after index while 5-6% of patients augmented treatment by adding another LLT. CONCLUSIONS Almost 50% of patients with major CVD history were not on any LLT, indicating a potential therapeutic gap. Medication adherence and persistence among patients on LLT were suboptimal.
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Affiliation(s)
| | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Baltimore, MD, USA
| | - J Mesterton
- Quantify Research, Stockholm, Sweden
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
| | - G Johansson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - L-Å Levin
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - P Sobocki
- LIME/Medical Management Centre, Karolinska Institute, Stockholm, Sweden
- IMS Health, Stockholm, Sweden
| | - S R Gandra
- Amgen Inc., Thousand Oaks, CA, United States
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Elomaa E, Lehtovaara R, Johansson G, Kukkola L. Local somatostatin of the brain, an agent in the genesis of focal epilepsy? Monogr Neural Sci 2015; 5:30-1. [PMID: 6119610 DOI: 10.1159/000387480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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23
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Grimminger P, Frystyk J, Blankenstein O, Hauffa BP, Johansson G, Muller Kobold AC, Kratzsch J, Cavalier E, Piazza A, Wüster C, Monaghan P, Droste M, de Rijke YB, Bidlingmaier M. Inter-laboratory comparison of IGF-I concentrations measured by an automated immunoassay: Results from a multicentre study across Europe. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1549077] [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: 10/23/2022]
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24
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Pourkabirian A, Gustafsson MV, Johansson G, Clarke J, Delsing P. Nonequilibrium probing of two-level charge fluctuators using the step response of a single-electron transistor. Phys Rev Lett 2014; 113:256801. [PMID: 25554902 DOI: 10.1103/physrevlett.113.256801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 06/04/2023]
Abstract
We report a new method to study two-level fluctuators (TLFs) by measuring the offset charge induced after applying a sudden step voltage to the gate electrode of a single-electron transistor. The offset charge is measured for more than 20 h for samples made on three different substrates. We find that the offset charge drift follows a logarithmic increase over 4 orders of magnitude in time and that the logarithmic slope increases linearly with the step voltage. The charge drift is independent of temperature, ruling out thermally activated TLFs and demonstrating that the charge fluctuations involve tunneling. These observations are in agreement with expectations for an ensemble of TLFs driven out of equilibrium. From our model, we extract the density of TLFs assuming either a volume density or a surface density.
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Affiliation(s)
- A Pourkabirian
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - M V Gustafsson
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - G Johansson
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - J Clarke
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden and Department of Physics, University of California, Berkeley, California 94720, USA
| | - P Delsing
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden
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25
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Johansson G, Söderfeldt B, Östberg AL. Young adults' views on the relevance of three measures for oral health-related quality of life. Int J Dent Hyg 2014; 13:184-91. [DOI: 10.1111/idh.12107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2014] [Indexed: 11/29/2022]
Affiliation(s)
- G Johansson
- School of Social and Health Sciences; Halmstad University; Halmstad Sweden
- Department of Periodontology and Oral Public Health; Faculty of Odontology; Malmö University; Malmö Sweden
| | - B Söderfeldt
- Department of Periodontology and Oral Public Health; Faculty of Odontology; Malmö University; Malmö Sweden
| | - A-L Östberg
- Department of Behavioural and Community Dentistry; Institution of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Public Dental Service; Region Västra Götaland; Götaland Sweden
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26
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Hallberg S, Banefelt J, Mesterton J, Gandra SR, Fox KM, Johansson G, Levin LÅ, Sobocki P. Health Care Costs Associated With Cardiovascular Events In Patients With Hyperlipidemia - Estimates From Population-Based Register Data In Sweden. Value Health 2014; 17:A492. [PMID: 27201468 DOI: 10.1016/j.jval.2014.08.1455] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Monkton, MD, USA
| | | | - L Å Levin
- Linköping University, Linköping, Sweden
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27
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Hallberg S, Banefelt J, Fox KM, Mesterton J, Johansson G, Levin LÅ, Sobocki P, Gandra SR. Treatment Patterns in Hyperlipidemia Patients With New Cardiovascular Events - Estimates From Population-Based Register Data in Sweden. Value Health 2014; 17:A501. [PMID: 27201519 DOI: 10.1016/j.jval.2014.08.1507] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Monkton, MD, USA
| | | | | | - L Å Levin
- Linköping University, Linköping, Sweden
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28
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Banefelt J, Hallberg S, Fox KM, Mesterton J, Paoli CJ, Johansson G, Levin LÅ, Sobocki P, Gandra SR. Work Productivity Loss and Indirect Costs Associated with New Cardiovascular Events in High-Risk Patients with Hyperlipidemia - Estimates from Population-Based Register Data in Sweden. Value Health 2014; 17:A327-A328. [PMID: 27200553 DOI: 10.1016/j.jval.2014.08.596] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Monkton, MD, USA
| | | | | | | | - L Å Levin
- Linköping University, Linköping, Sweden
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29
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Banefelt J, Hallberg S, Gandra SR, Mesterton J, Fox KM, Paoli CJ, Johansson G, Levin LÅ, Sobocki P. Burden Of Hyperlipidemia Resulting From Productivity Loss - Estimates From Population-Based Register Data In Sweden. Value Health 2014; 17:A491-A492. [PMID: 27201458 DOI: 10.1016/j.jval.2014.08.1454] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Monkton, MD, USA
| | | | | | - L Å Levin
- Linköping University, Linköping, Sweden
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30
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Mesterton J, Hallberg S, Gandra SR, Banefelt J, Fox KM, Johansson G, Levin LÅ, Sobocki P. Ldl-C Goal Attainment In Patients With Hyperlipidemia - Estimates From Population-Based Register Data In Sweden. Value Health 2014; 17:A497. [PMID: 27201495 DOI: 10.1016/j.jval.2014.08.1486] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | | | - K M Fox
- Strategic Healthcare Solutions, LLC, Monkton, MD, USA
| | | | - L Å Levin
- Linköping University, Linköping, Sweden
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31
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Sabale U, Bodegård J, Sundström J, Svennblad B, Östgren CJ, Nilsson P, Johansson G, Henriksson M. Association of Changes In Body Weight With Health Care Costs Among Patients With Newly-Diagnosed Type-2 Diabetes In Sweden. Value Health 2014; 17:A338. [PMID: 27200610 DOI: 10.1016/j.jval.2014.08.660] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- U Sabale
- AstraZeneca Nordic-Baltic, Södertälje, Sweden
| | - J Bodegård
- AstraZeneca Nordic-Baltic, Södertälje, Sweden
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32
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Khalid JM, Mushnikov V, Vattulainen P, Johansson G, Korhonen P, Hoti F. Patients With COPD who Initiate Roflumilast in Sweden. Value Health 2014; 17:A590. [PMID: 27202016 DOI: 10.1016/j.jval.2014.08.2022] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- J M Khalid
- Takeda Development Centre Europe, Ltd., London, UK
| | | | | | | | | | - F Hoti
- EPID Research, Espoo, Finland
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33
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Felicetti S, Sanz M, Lamata L, Romero G, Johansson G, Delsing P, Solano E. Dynamical Casimir effect entangles artificial atoms. Phys Rev Lett 2014; 113:093602. [PMID: 25215982 DOI: 10.1103/physrevlett.113.093602] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Indexed: 06/03/2023]
Abstract
We show that the physics underlying the dynamical Casimir effect may generate multipartite quantum correlations. To achieve it, we propose a circuit quantum electrodynamics scenario involving superconducting quantum interference devices, cavities, and superconducting qubits, also called artificial atoms. Our results predict the generation of highly entangled states for two and three superconducting qubits in different geometric configurations with realistic parameters. This proposal paves the way for a scalable method of multipartite entanglement generation in cavity networks through dynamical Casimir physics.
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Affiliation(s)
- S Felicetti
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - M Sanz
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - L Lamata
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - G Romero
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - G Johansson
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - P Delsing
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - E Solano
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain and IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36, 48011 Bilbao, Spain
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Svenmarker S, Häggmark S, Johansson G, Axelsson B, Wiklund U, Haney M. Regional changes in cerebral blood flow oxygenation can indicate global changes in cerebral blood flow during coronary artery occlusion in juvenile pigs. Physiol Meas 2014; 35:1439-50. [PMID: 24901340 DOI: 10.1088/0967-3334/35/7/1439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Near infrared spectroscopy (NIRS) is a widely employed method for assessment of regional cerebral oxygenation (RcStO2). RcStO2 values are expected to vary with changes in the relative amount of oxyhaemoglobin. The present experimental study aimed to assess the response of RcStO2 to controlled alterations of carotid blood flow (CQ). Landrace pigs were anesthetized followed by surgical preparation. Cyclic variations in cardiac output were accomplished by intermittently occluding the main stem of the left coronary artery. A flow measurement probe for assessing CQ was placed around the left carotid artery. One NIRS probe was placed on the left ipsilateral forehead to assess regional cerebral oximetry. Simultaneous registration of CQ and RcStO2 was conducted. There was a strong correlation for variation in CQ and RcStO2 signal values. Based on coherence analysis the fraction of power of the RcStO2 that was coherent with the CQ signal reached 0.84 ± 0.12 (P < 0.05) for frequencies lower than 0.1 Hz. The agreement of the sample-to-sample co-variation, as assessed by the Pearson correlation coefficient, was 0.83 ± 0.08 (P < 0.05). One explanatory component for variations in cerebral oxygenation verified by NIRS should be attributed to variations in the cerebral blood flow.
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Affiliation(s)
- S Svenmarker
- Department of Surgical and Perioperative Sciences, Heart Centre, Umeå University, SE-901 85 Umeå, Sweden
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35
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Abstract
Abstract
The structure of zinc chloride complexes with different ratios of chloride to zinc, formed in concentrated ZnCl2 aqueous solutions, were determined from large-angle X-ray scattering using concentrations of the chloride complexes estimated by complementary Raman spectroscopic measurements. The highest chloro complex, [ZnCl4]2-, is tetrahedral with a Zn-Cl bond length of 2.294(4) Å. The trichloro complex, [ZnCl3]-, which coordinates one water molecule, is pyramidal with the Cl-Zn-Cl angle 111°. The Zn-Cl and the Zn-H2O bonds are 2.282(4) and 1.9 Å, respectively. The two lower complexes, [ZnCl2] and [ZnCl]+ , cannot be separated by Raman spectra. The average Zn-Cl distance in these complexes is 2.24 Å, and the average Zn-H2O distance is 1.9 Å. In [Zn(H2O)6]2+ the Zn-H2O distance is 2.15 Å.
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Affiliation(s)
- M. Maeda
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan
| | - T. Ito
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan
| | - M. Hori
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan
| | - G. Johansson
- Department of Inorganic Chemistry, Royal Institute of Technology, S-100 44 Stockholm, Sweden
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36
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Kálmán E, Serke I, Pálinkás G, Johansson G, Kabisch G, Maeda M, Ohtaki H. Complex Formation in an Aqueous ZnBr2 Solution Based on Electron Diffraction, X-ray Scattering and Raman Spectra. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/zna-1983-0220] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Electron and X-ray scattering as well as Raman spectra of as aqueous solution of ZnBr2 with a Br-/Zn++ ratio of 3:1 have been studied. The existence of hexaaquo, di-, tri-and tetra-bromo complexes in solution has been established by all three methods. Octahedral hexaaquo and tetrahedral Zn(H2O)4-n Brn complexes with n=2, 3, 4 are consistent with electron and X-ray structure functions. The inner sphere type complexes have interatomic distances of 2.2 Å for Zn++ -H2O, 2.4 Å for Zn++ -Br-, 3.93 Å for Br--Br- and 2.91 Å for W-W interactions with average numbers of contacts 2.4, 2.22, 1.33 and 1.1 respectively.
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Affiliation(s)
- E. Kálmán
- Central Research Institute for Chemistry, Budapest
| | - I. Serke
- Central Research Institute for Chemistry, Budapest
| | - G. Pálinkás
- Central Research Institute for Chemistry, Budapest
| | | | - G. Kabisch
- Arbeitsstelle der Sächsischen Akademie, Freiberg
| | - M. Maeda
- Tokyo Institute of Technology, Japan
| | - H. Ohtaki
- Tokyo Institute of Technology, Japan
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37
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Sathyamoorthy SR, Tornberg L, Kockum AF, Baragiola BQ, Combes J, Wilson CM, Stace TM, Johansson G. Quantum nondemolition detection of a propagating microwave photon. Phys Rev Lett 2014; 112:093601. [PMID: 24655250 DOI: 10.1103/physrevlett.112.093601] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Indexed: 05/27/2023]
Abstract
The ability to nondestructively detect the presence of a single, traveling photon has been a long-standing goal in optics, with applications in quantum information and measurement. Realizing such a detector is complicated by the fact that photon-photon interactions are typically very weak. At microwave frequencies, very strong effective photon-photon interactions in a waveguide have recently been demonstrated. Here we show how this type of interaction can be used to realize a quantum nondemolition measurement of a single propagating microwave photon. The scheme we propose uses a chain of solid-state three-level systems (transmons) cascaded through circulators which suppress photon backscattering. Our theoretical analysis shows that microwave-photon detection with fidelity around 90% can be realized with existing technologies.
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Affiliation(s)
- Sankar R Sathyamoorthy
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Gothenburg, Sweden
| | - L Tornberg
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Gothenburg, Sweden
| | - Anton F Kockum
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Gothenburg, Sweden
| | - Ben Q Baragiola
- Center for Quantum Information and Control, University of New Mexico, Albuquerque, New Mexico 87131-0001, USA
| | - Joshua Combes
- Center for Quantum Information and Control, University of New Mexico, Albuquerque, New Mexico 87131-0001, USA
| | - C M Wilson
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Gothenburg, Sweden and Institute for Quantum Computing and Electrical and Computer Engineering Department, University of Waterloo, Waterloo N2 L 3G1, Canada
| | - Thomas M Stace
- Centre for Engineered Quantum Systems, School of Physical Sciences, University of Queensland, Saint Lucia, Queensland 4072, Australia
| | - G Johansson
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Gothenburg, Sweden
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Kivipelto M, Mangialasche F, Solomon A, Johansson G, Lannfelt L, Fratiglioni L, Winblad B. 9th Key symposium introduction: updating Alzheimer's disease diagnosis implications for prevention and treatment. J Intern Med 2014; 275:202-3. [PMID: 24605804 DOI: 10.1111/joim.12193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M Kivipelto
- Karolinska Institutet Alzheimer Disease Research Center (KI-ADRC), Stockholm, Sweden; Department of Neurology, University of Eastern Finland, Kuopio, Finland; Aging Research Center, Karolinska Institutet and Stockholm University, Sweden
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de Graaf SE, Leppäkangas J, Adamyan A, Danilov AV, Lindström T, Fogelström M, Bauch T, Johansson G, Kubatkin SE. Charge qubit coupled to an intense microwave electromagnetic field in a superconducting Nb device: evidence for photon-assisted quasiparticle tunneling. Phys Rev Lett 2013; 111:137002. [PMID: 24116809 DOI: 10.1103/physrevlett.111.137002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Indexed: 06/02/2023]
Abstract
We study a superconducting charge qubit coupled to an intensive electromagnetic field and probe changes in the resonance frequency of the formed dressed states. At large driving strengths, exceeding the qubit energy-level splitting, this reveals the well known Landau-Zener-Stückelberg interference structure of a longitudinally driven two-level system. For even stronger drives, we observe a significant change in the Landau-Zener-Stückelberg pattern and contrast. We attribute this to photon-assisted quasiparticle tunneling in the qubit. This results in the recovery of the qubit parity, eliminating effects of quasiparticle poisoning, and leads to an enhanced interferometric response. The interference pattern becomes robust to quasiparticle poisoning and has a good potential for accurate charge sensing.
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Affiliation(s)
- S E de Graaf
- Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-41296 Goteborg, Sweden
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Groen JP, Ristè D, Tornberg L, Cramer J, de Groot PC, Picot T, Johansson G, DiCarlo L. Partial-measurement backaction and nonclassical weak values in a superconducting circuit. Phys Rev Lett 2013; 111:090506. [PMID: 24033014 DOI: 10.1103/physrevlett.111.090506] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 06/29/2013] [Indexed: 06/02/2023]
Abstract
We realize indirect partial measurement of a transmon qubit in circuit quantum electrodynamics by interaction with an ancilla qubit and projective ancilla measurement with a dedicated readout resonator. Accurate control of the interaction and ancilla measurement basis allows tailoring the measurement strength and operator. The tradeoff between measurement strength and qubit backaction is characterized through the distortion of a qubit Rabi oscillation imposed by ancilla measurement in different bases. Combining partial and projective qubit measurements, we provide the solid-state demonstration of the correspondence between a nonclassical weak value and the violation of a Leggett-Garg inequality.
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Affiliation(s)
- J P Groen
- Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands
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Bodegard J, Sundström J, Svennblad B, Östgren CJ, Nilsson PM, Johansson G. Changes in body mass index following newly diagnosed type 2 diabetes and risk of cardiovascular mortality: a cohort study of 8486 primary-care patients. Diabetes Metab 2013; 39:306-13. [PMID: 23871502 DOI: 10.1016/j.diabet.2013.05.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 04/25/2013] [Accepted: 05/09/2013] [Indexed: 10/26/2022]
Abstract
AIMS Elevated body mass index (BMI) is associated with an increased risk of type 2 diabetes and cardiovascular disease (CVD). This study explored the association between BMI changes in the first 18 months of newly diagnosed type 2 diabetes and the risk of long-term CVD mortality. METHODS A total of 8486 patients with newly diagnosed type 2 diabetes and no previous history of CVD or cancer were identified from 84 primary-care centres in Sweden. During the first year after diagnosis, patients were grouped according to BMI change: 'Increase', or ≥+1 BMI unit; 'unchanged', or between +1 and-1 BMI unit; and 'decrease', or ≤-1 BMI unit. Associations between BMI change and CVD mortality, defined as death from stroke, myocardial infarction or sudden death, were estimated using adjusted Cox proportional hazards models (NCT 01121315). RESULTS Baseline mean age was 60.0 years and mean BMI was 30.2kg/m(2). Patients were followed for up to 9 years (median: 4.6 years). During the first 18 months, 53.4% had no change in their BMI, while 32.2% decreased and 14.4% increased. Compared with patients with unchanged BMI, those with an increased BMI had higher risks of CVD mortality (hazard ratio: 1.63, 95% CI: 1.11-2.39) and all-cause mortality (1.33, 1.01-1.76). BMI decreases had no association with these risks compared with unchanged BMI: 1.06 (0.76-1.48) and 1.06 (0.85-1.33), respectively. CONCLUSION Increased BMI within the first 18 months of type 2 diabetes diagnosis was associated with an increased long-term risk of CVD mortality. However, BMI decrease did not lower the long-term risk of mortality.
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Affiliation(s)
- J Bodegard
- Department of Medicine, AstraZeneca AB, Karlebyhus, 151 85 Södertälje, Sweden.
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Nilsson C, Nopp A, Wickman M, Johansson G, Lilja G. Treatment of life-threatening food allergy. Clin Transl Allergy 2013. [PMCID: PMC3723487 DOI: 10.1186/2045-7022-3-s3-o8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Sundström B, Johansson G, Johansson I, Wållberg-Jonsson S. AB0187 Cardiovascular risk factors among patients with ankylosing spondylitis in comparison to the general population. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.187] [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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Larsson K, Janson C, Lisspers K, Jørgensen L, Stratelis G, Telg G, Ställberg B, Johansson G. Combination of budesonide/formoterol more effective than fluticasone/salmeterol in preventing exacerbations in chronic obstructive pulmonary disease: the PATHOS study. J Intern Med 2013; 273:584-94. [PMID: 23495860 DOI: 10.1111/joim.12067] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Combinations of inhaled corticosteroids (ICSs) and long-acting β2 -agonists (LABAs) are recommended for patients with moderate and severe chronic obstructive pulmonary disease (COPD). However, it is not known whether different fixed combinations are equally effective. The aim of this study was to investigate exacerbation rates in primary care patients with COPD treated with budesonide/formoterol compared with fluticasone/salmeterol. METHODS Patients with physician-diagnosed COPD and a record of postdiagnosis treatment with a fixed combination of budesonide/formoterol or fluticasone/salmeterol were included. Data from primary care medical records were linked to those from Swedish national hospital, drug and cause of death registers. Pairwise (1 : 1) propensity score matching was carried out at the index date (first prescription) by prescribed fixed ICS/LABA combination. Exacerbations were defined as hospitalizations, emergency visits and collection of oral steroids or antibiotics for COPD. Yearly event rates were compared using Poisson regression. RESULTS Matching of 9893 patients (7155 budesonide/formoterol and 2738 fluticasone/salmeterol) yielded two cohorts of 2734 patients, comprising 19 170 patient-years. The exacerbation rates were 0.80 and 1.09 per patient-year in the budesonide/formoterol and fluticasone/salmeterol groups, respectively (difference of 26.6%; P < 0.0001); yearly rates for COPD-related hospitalizations were 0.15 and 0.21, respectively (difference of 29.1%; P < 0.0001). All other healthcare outcomes were also significantly reduced with budesonide/formoterol versus fluticasone/salmeterol. CONCLUSIONS Long-term treatment with fixed combination budesonide/formoterol was associated with fewer healthcare utilization-defined exacerbations than fluticasone/salmeterol in patients with moderate and severe COPD.
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Affiliation(s)
- K Larsson
- Unit of Lung and Allergy Research, National Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Östgren CJ, Sundström J, Svennblad B, Lohm L, Nilsson PM, Johansson G. Associations of HbA1c and educational level with risk of cardiovascular events in 32,871 drug-treated patients with Type 2 diabetes: a cohort study in primary care. Diabet Med 2013; 30:e170-7. [PMID: 23350893 PMCID: PMC3654570 DOI: 10.1111/dme.12145] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/22/2013] [Indexed: 12/25/2022]
Abstract
AIMS To explore the association of HbA1c and educational level with risk of cardiovascular events and mortality in patients with Type 2 diabetes. METHODS A cohort of 32 871 patients with Type 2 diabetes aged 35 years and older identified by extracting data from electronic patient records for all patients who had a diagnosis of Type 2 diabetes and had glucose-lowering agents prescribed between 1999 and 2009 at 84 primary care centres in Sweden. Associations of mean HbA1c levels and educational level with risks of cardiovascular events and all-cause mortality were analysed. RESULTS The associations of HbA1c with risk of all-cause and cardiovascular mortality were J-shaped, with the lowest risk observed for cardiovascular mortality at an HbA1c level of 51 mmol/mol (6.8%) for subjects on oral agents and 56 mmol/mol (7.3%) in insulin-treated patients. The lowest risk observed for all-cause mortality was at an HbA1c level of 51 mmol/mol (6.8%) for subjects on oral agents and 56 mmol/mol (7.3%) in insulin-treated patients. There was an increased risk for cardiovascular death [hazard ratio 1.6 (1.2-2.1), P = 0.0008] at the lowest HbA1c decile for subjects in the low education category. For subjects with higher education there was no evident J curve for cardiovascular death [hazard ratio 1.2 (0.8-1.6), P = 0.3873]. CONCLUSIONS Our results lend support to the recent American Diabetes Association/ European Association for the Study of Diabetes position statement that emphasizes the importance of additional factors, including the propensity for hypoglycaemia, which should influence HbA1c targets and treatment choices for individual patients. (Clinical Trials Registry No; NCT 01121315).
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Affiliation(s)
- C J Östgren
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
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Knochenhauer M, Mankamo T, Hellström P, Johansson G. Protection against dependent failures, analysis of dependencies and derivation of CCF data. KERNTECHNIK 2013. [DOI: 10.3139/124.100384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The article describes a number of activities that were part of a major Nordic co-operation project which was recently performed, and which aimed at providing state-of-the-art guidance on the handling of dependent failures in nuclear power plants, both in operation and safety management, and as a part of plant PSA:s. This includes a rather wide scope of activities ranging from reviewing and describing available sources of data on CCF and CCF modelling techniques to the analysis of the efficiency of various protective measures against dependent failures in safety related equipment. A set of guidance documents was issued. The project also included a number of data analysis pilot applications, where CCF events in the ICDE database were analysed applying the impact vector method for several types of safety critical components.
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Affiliation(s)
| | - T. Mankamo
- Avaplan Oy, Itainen rantatie 17B, FI-02230 Espoo, Finland. E-mail:
| | - P. Hellström
- RELCON AB, Box 1288, SE-17225 Sundbyberg, Sweden. E-mail:
| | - G. Johansson
- ES-Konsult AB, Svetsarvägen 7, SE-17141 Solna, Sweden. E-mail:
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Friis N, Lee AR, Truong K, Sabín C, Solano E, Johansson G, Fuentes I. Relativistic quantum teleportation with superconducting circuits. Phys Rev Lett 2013; 110:113602. [PMID: 25166531 DOI: 10.1103/physrevlett.110.113602] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Indexed: 06/03/2023]
Abstract
We study the effects of relativistic motion on quantum teleportation and propose a realizable experiment where our results can be tested. We compute bounds on the optimal fidelity of teleportation when one of the observers undergoes nonuniform motion for a finite time. The upper bound to the optimal fidelity is degraded due to the observer's motion. However, we discuss how this degradation can be corrected. These effects are observable for experimental parameters that are within reach of cutting-edge superconducting technology.
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Affiliation(s)
- N Friis
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - A R Lee
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - K Truong
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - C Sabín
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - E Solano
- Departamento de Química Física, Universidad del País Vasco UPV/EHU, Apartado 644, 48080 Bilbao, Spain and IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36, 48011 Bilbao, Spain
| | - G Johansson
- Microtechnology and Nanoscience, MC2, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - I Fuentes
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
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Rydenfalt C, Johansson G, Odenrick P, Akerman K, Larsson PA. Compliance with the WHO Surgical Safety Checklist: deviations and possible improvements. Int J Qual Health Care 2013; 25:182-7. [DOI: 10.1093/intqhc/mzt004] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zamora-Ros R, Knaze V, Luján-Barroso L, Kuhnle GGC, Mulligan AA, Touillaud M, Slimani N, Romieu I, Powell N, Tumino R, Peeters PHM, de Magistris MS, Ricceri F, Sonestedt E, Drake I, Hjartåker A, Skie G, Mouw T, Wark PA, Romaguera D, Bueno-de-Mesquita HB, Ros M, Molina E, Sieri S, Quirós JR, Huerta JM, Tjønneland A, Halkjær J, Masala G, Teucher B, Kaas R, Travis RC, Dilis V, Benetou V, Trichopoulou A, Amiano P, Ardanaz E, Boeing H, Förster J, Clavel-Chapelon F, Fagherazzi G, Perquier F, Johansson G, Johansson I, Cassidy A, Overvad K, González CA. Dietary intakes and food sources of phytoestrogens in the European Prospective Investigation into Cancer and Nutrition (EPIC) 24-hour dietary recall cohort. Eur J Clin Nutr 2012; 66:932-41. [PMID: 22510793 DOI: 10.1038/ejcn.2012.36] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 01/26/2012] [Accepted: 01/26/2012] [Indexed: 01/18/2023]
Abstract
BACKGROUND/OBJECTIVES Phytoestrogens are estradiol-like natural compounds found in plants that have been associated with protective effects against chronic diseases, including some cancers, cardiovascular diseases and osteoporosis. The purpose of this study was to estimate the dietary intake of phytoestrogens, identify their food sources and their association with lifestyle factors in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. SUBJECTS/METHODS Single 24-hour dietary recalls were collected from 36,037 individuals from 10 European countries, aged 35-74 years using a standardized computerized interview programe (EPIC-Soft). An ad hoc food composition database on phytoestrogens (isoflavones, lignans, coumestans, enterolignans and equol) was compiled using data from available databases, in order to obtain and describe phytoestrogen intakes and their food sources across 27 redefined EPIC centres. RESULTS Mean total phytoestrogen intake was the highest in the UK health-conscious group (24.9 mg/day in men and 21.1 mg/day in women) whereas lowest in Greece (1.3 mg/day) in men and Spain-Granada (1.0 mg/day) in women. Northern European countries had higher intakes than southern countries. The main phytoestrogen contributors were isoflavones in both UK centres and lignans in the other EPIC cohorts. Age, body mass index, educational level, smoking status and physical activity were related to increased intakes of lignans, enterolignans and equol, but not to total phytoestrogen, isoflavone or coumestan intakes. In the UK cohorts, the major food sources of phytoestrogens were soy products. In the other EPIC cohorts the dietary sources were more distributed, among fruits, vegetables, soy products, cereal products, non-alcoholic and alcoholic beverages. CONCLUSIONS There was a high variability in the dietary intake of total and phytoestrogen subclasses and their food sources across European regions.
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Affiliation(s)
- R Zamora-Ros
- Unit of Nutrition, Environment and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO-IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain.
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Blind PJ, Kral J, Wang W, Kralova I, Abrahamsson P, Johansson G, Winsö O. Microdialysis in Early Detection of Temporary Pancreatic Ischemia in a Porcine Model. Eur Surg Res 2012; 49:113-20. [DOI: 10.1159/000343806] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 09/30/2012] [Indexed: 01/21/2023]
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