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Friborg J, Jensen K, Eriksen JG, Samsøe E, Maare C, Farhadi M, Sibolt P, Nielsen M, Andersen M, Holm AIS, Skyt P, Smulders B, Johansen J, Overgaard J, Grau C, Hansen CR. Considerations for study design in the DAHANCA 35 trial of protons versus photons for head and neck cancer. Radiother Oncol 2024; 190:109958. [PMID: 37871751 DOI: 10.1016/j.radonc.2023.109958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 08/10/2023] [Accepted: 09/26/2023] [Indexed: 10/25/2023]
Abstract
Proton radiotherapy offers a dosimetric advantage compared to photon therapy in sparing normal tissue, but the clinical evidence for toxicity reductions in the treatment of head and neck cancer is limited. The Danish Head and Neck Cancer Group (DAHANCA) has initiated the DAHANCA 35 randomised trial to clarify the value of proton therapy (NCT04607694). The DAHANCA 35 trial is performed in an enriched population of patients selected by an anticipated benefit of proton therapy to reduce the risk of late dysphagia or xerostomia based on normal tissue complication probability (NTCP) modelling. We present our considerations on the trial design and a test of the selection procedure conducted before initiating the randomised study.
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Affiliation(s)
- J Friborg
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark; Department of Oncology, Rigshospitalet, Denmark. %
| | - K Jensen
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark
| | - J G Eriksen
- Department of Oncology, Aarhus University Hospital, Denmark; Aarhus University Hospital, Department of Experimental Clinical Oncology, Denmark
| | - E Samsøe
- Department of Oncology, Zealand University Hospital Næstved, Denmark
| | - C Maare
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Denmark
| | - M Farhadi
- Department of Oncology, Zealand University Hospital Næstved, Denmark
| | - P Sibolt
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Denmark
| | - M Nielsen
- Department of Oncology, Aalborg University Hospital, Denmark
| | - M Andersen
- Department of Oncology, Aalborg University Hospital, Denmark
| | - A I S Holm
- Department of Oncology, Aarhus University Hospital, Denmark
| | - P Skyt
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark
| | - B Smulders
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark; Department of Oncology, Rigshospitalet, Denmark
| | - J Johansen
- Department of Oncology, Odense University Hospital, Denmark
| | - J Overgaard
- Aarhus University Hospital, Department of Experimental Clinical Oncology, Denmark
| | - C Grau
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark
| | - C R Hansen
- Danish Center of Particle Therapy, Aarhus University Hospital, Denmark; Department of Oncology, Odense University Hospital, Denmark; Institute of Clinical Research, University of Southern Denmark, Denmark
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2
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Andersen M. Machine learning speeds up search for surface structure. Nat Comput Sci 2023; 3:1009-1010. [PMID: 38177731 DOI: 10.1038/s43588-023-00575-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Affiliation(s)
- Mie Andersen
- Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.
- Center for Interstellar Catalysis, Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark.
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3
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Højsager FD, Andersen M, Juul A, Nielsen F, Möller S, Christensen HT, Grøntved A, Grandjean P, Jensen TK. Retraction notice to "Prenatal and early postnatal exposure to perfluoroalkyl substances and bone mineral content and density in the odense child cohort" [Environ. Int. 167 (2022) 107417]. Environ Int 2023; 181:108275. [PMID: 37903696 DOI: 10.1016/j.envint.2023.108275] [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: 11/01/2023]
Affiliation(s)
- F D Højsager
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark.
| | - M Andersen
- Department of Endocrinology and Metabolism, Odense University, Denmark; Institute of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Denmark
| | - A Juul
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Denmark
| | - F Nielsen
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark
| | - S Möller
- Odense Patient data Explorative Network (OPEN), Odense, Denmark
| | - H T Christensen
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - A Grøntved
- Exercise Epidemiology, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; Centre of Research in Childhood Health, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - P Grandjean
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark; Depertment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, USA
| | - T K Jensen
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark; Odense Patient data Explorative Network (OPEN), Odense, Denmark; Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
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4
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Dietz AG, Weikop P, Hauglund N, Andersen M, Petersen NC, Rose L, Hirase H, Nedergaard M. Local extracellular K + in cortex regulates norepinephrine levels, network state, and behavioral output. Proc Natl Acad Sci U S A 2023; 120:e2305071120. [PMID: 37774097 PMCID: PMC10556678 DOI: 10.1073/pnas.2305071120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/08/2023] [Indexed: 10/01/2023] Open
Abstract
Extracellular potassium concentration ([K+]e) is known to increase as a function of arousal. [K+]e is also a potent modulator of transmitter release. Yet, it is not known whether [K+]e is involved in the neuromodulator release associated with behavioral transitions. We here show that manipulating [K+]e controls the local release of monoaminergic neuromodulators, including norepinephrine (NE), serotonin, and dopamine. Imposing a [K+]e increase is adequate to boost local NE levels, and conversely, lowering [K+]e can attenuate local NE. Electroencephalography analysis and behavioral assays revealed that manipulation of cortical [K+]e was sufficient to alter the sleep-wake cycle and behavior of mice. These observations point to the concept that NE levels in the cortex are not solely determined by subcortical release, but that local [K+]e dynamics have a strong impact on cortical NE. Thus, cortical [K+]e is an underappreciated regulator of behavioral transitions.
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Affiliation(s)
- Andrea Grostøl Dietz
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Pia Weikop
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Natalie Hauglund
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Mie Andersen
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Nicolas Caesar Petersen
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Laura Rose
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY14642
| | - Maiken Nedergaard
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of CopenhagenDK-2200, Copenhagen N, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY14642
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5
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Andersen M, Tsopanidou A, Radovanovic T, Compere VN, Hauglund N, Nedergaard M, Kjaerby C. Using Fiber Photometry in Mice to Estimate Fluorescent Biosensor Levels During Sleep. Bio Protoc 2023; 13:e4734. [PMID: 37575397 PMCID: PMC10415158 DOI: 10.21769/bioprotoc.4734] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/12/2023] [Accepted: 05/12/2023] [Indexed: 08/15/2023] Open
Abstract
Sleep is not homogenous but contains a highly diverse microstructural composition influenced by neuromodulators. Prior methods used to measure neuromodulator levels in vivo have been limited by low time resolution or technical difficulties in achieving recordings in a freely moving setting, which is essential for natural sleep. In this protocol, we demonstrate the combination of electroencephalographic (EEG)/electromyographic (EMG) recordings with fiber photometric measurements of fluorescent biosensors for neuromodulators in freely moving mice. This allows for real-time assessment of extracellular neuromodulator levels during distinct phases of sleep with a high temporal resolution.
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Affiliation(s)
- Mie Andersen
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
| | - Anastasia Tsopanidou
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
| | - Tessa Radovanovic
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
| | - Viviane Noelani Compere
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
| | - Natalie Hauglund
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
| | - Maiken Nedergaard
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
- Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA
| | - Celia Kjaerby
- Center for Translational Neuromedicine, University of Copenhagen, Noerre Alle 14, 2200 Copenhagen, Denmark
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Andersen M, Slavensky AM. Descriptors for binding energies at clusters: The case of nanosilicates as models of interstellar dust grains. J Chem Phys 2023; 159:044711. [PMID: 37503852 DOI: 10.1063/5.0156311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
Binding energies of radicals and molecules at dust grain surfaces are important parameters for understanding and modeling the chemical inventory of interstellar gas clouds. While first-principles methods can reliably be used to compute such binding energies, the complex structure and varying sizes and stoichiometries of realistic dust grains make a complete characterization of all adsorption sites exposed by their surfaces challenging. Here, we focus on nanoclusters composed of Mg-rich silicates as models of interstellar dust grains and two adsorbates of particular astrochemical relevance; H and CO. We employ a compressed sensing method to identify descriptors for the binding energies, which are expressed as analytical functions of intrinsic properties of the clusters, obtainable through a single first-principles calculation of the cluster. The descriptors are identified based on a diverse training dataset of binding energies at low-energy structures of nanosilicate clusters, where the latter structures were obtained using a first-principles-based global optimization method. The composition of the descriptors reveals how electronic, electrostatic, and geometric properties of the nanosilicates control the binding energies and demonstrates distinct physical origins of the bond formation for H and CO. The predictive performance of the descriptors is found to be limited by cluster reconstruction, e.g., breaking of internal metal-oxygen bonds, upon the adsorption event, and strategies to account for this phenomenon are discussed. The identified descriptors and the computed datasets of stable nanosilicate clusters along with their binding energies are expected to find use in astrochemical models of reaction networks occurring at silicate grain surfaces.
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Affiliation(s)
- Mie Andersen
- Aarhus Institute of Advanced Studies, Aarhus University, Aarhus C DK-8000, Denmark
- Center for Interstellar Catalysis, Department of Physics and Astronomy, Aarhus University, Aarhus C DK-8000, Denmark
| | - Andreas Møller Slavensky
- Center for Interstellar Catalysis, Department of Physics and Astronomy, Aarhus University, Aarhus C DK-8000, Denmark
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7
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Andersen M, Bangsgaard KO, Heaf JG, Ottesen JT. Analytical solution of phosphate kinetics for hemodialysis. J Math Biol 2023; 87:11. [PMID: 37332042 DOI: 10.1007/s00285-023-01942-4] [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: 09/29/2022] [Revised: 05/22/2023] [Accepted: 05/28/2023] [Indexed: 06/20/2023]
Abstract
Chronic kidney diseases imply an ongoing need to remove toxins, with hemodialysis as the preferred treatment modality. We derive analytical expressions for phosphate clearance during dialysis, the single pass (SP) model corresponding to a standard clinical hemodialysis and the multi pass (MP) model, where dialysate is recycled and therefore makes a smaller clinical setting possible such as a transportable dialysis suitcase. For both cases we show that the convective contribution to the dialysate is negligible for the phosphate kinetics and derive simpler expressions. The SP and MP models are calibrated to clinical data of ten patients showing consistency between the models and provide estimates of the kinetic parameters. Immediately after dialysis a rebound effect is observed. We derive a simple formula describing this effect which is valid both posterior to SP or MP dialysis. The analytical formulas provide explanations to observations of previous clinical studies.
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Affiliation(s)
- M Andersen
- IMFUFA, Centre for Mathematical Modeling, Human Health and Disease, Roskilde University, Roskilde, Denmark.
| | - K O Bangsgaard
- DTU Compute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - J G Heaf
- Department of Nephrology, University Hospital of Zealand, Roskilde, Denmark
| | - J T Ottesen
- IMFUFA, Centre for Mathematical Modeling, Human Health and Disease, Roskilde University, Roskilde, Denmark
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8
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Kjaerby C, Andersen M, Hauglund N, Untiet V, Dall C, Ding F, Hirase H, Nedergaard M. Reply to: 'Do all norepinephrine surges disrupt sleep?'. Nat Neurosci 2023:10.1038/s41593-023-01314-7. [PMID: 37081298 DOI: 10.1038/s41593-023-01314-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/20/2023] [Indexed: 04/22/2023]
Affiliation(s)
- Celia Kjaerby
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark.
| | - Mie Andersen
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark
| | - Natalie Hauglund
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark
| | - Verena Untiet
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark
| | - Camilla Dall
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark
| | - Fengfei Ding
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA
| | - Hajime Hirase
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA
| | - Maiken Nedergaard
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark.
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA.
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9
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Untiet V, Beinlich FRM, Kusk P, Kang N, Ladrón-de-Guevara A, Song W, Kjaerby C, Andersen M, Hauglund N, Bojarowska Z, Sigurdsson B, Deng S, Hirase H, Petersen NC, Verkhratsky A, Nedergaard M. Astrocytic chloride is brain state dependent and modulates inhibitory neurotransmission in mice. Nat Commun 2023; 14:1871. [PMID: 37015909 PMCID: PMC10073105 DOI: 10.1038/s41467-023-37433-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/15/2023] [Indexed: 04/06/2023] Open
Abstract
Information transfer within neuronal circuits depends on the balance and recurrent activity of excitatory and inhibitory neurotransmission. Chloride (Cl-) is the major central nervous system (CNS) anion mediating inhibitory neurotransmission. Astrocytes are key homoeostatic glial cells populating the CNS, although the role of these cells in regulating excitatory-inhibitory balance remains unexplored. Here we show that astrocytes act as a dynamic Cl- reservoir regulating Cl- homoeostasis in the CNS. We found that intracellular chloride concentration ([Cl-]i) in astrocytes is high and stable during sleep. In awake mice astrocytic [Cl-]i is lower and exhibits large fluctuation in response to both sensory input and motor activity. Optogenetic manipulation of astrocytic [Cl-]i directly modulates neuronal activity during locomotion or whisker stimulation. Astrocytes thus serve as a dynamic source of extracellular Cl- available for GABAergic transmission in awake mice, which represents a mechanism for modulation of the inhibitory tone during sustained neuronal activity.
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Affiliation(s)
- Verena Untiet
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark.
| | - Felix R M Beinlich
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Peter Kusk
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Ning Kang
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Antonio Ladrón-de-Guevara
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, 14642, USA
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Wei Song
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Celia Kjaerby
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Mie Andersen
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Natalie Hauglund
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Zuzanna Bojarowska
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Björn Sigurdsson
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Saiyue Deng
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P.R. China
| | - Hajime Hirase
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Nicolas C Petersen
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Alexei Verkhratsky
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark.
- Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Rd, Manchester, M13 9PL, UK.
- Achucarro Centre for Neuroscience, IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009, Bilbao, Spain.
| | - Maiken Nedergaard
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, University of Copenhagen, 2200, Copenhagen, Denmark.
- Division of Glial Disease and Therapeutics, Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, 14642, USA.
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Kyllesbech C, Trier N, Mughal F, Hansen P, Holmström M, El Fassi D, Hasselbalch H, Skov V, Kjær L, Andersen M, Ciplys E, Slibinskas R, Frederiksen J, Højrup P, Houen G. Antibodies to calnexin and mutated calreticulin are common in human sera. Curr Res Transl Med 2023; 71:103380. [PMID: 36738659 DOI: 10.1016/j.retram.2023.103380] [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: 09/15/2022] [Revised: 01/12/2023] [Accepted: 01/24/2023] [Indexed: 01/30/2023]
Abstract
PURPOSE OF THE STUDY Calreticulin is an endoplasmic reticulum chaperone protein, which is involved in protein folding and in peptide loading of major histocompatibility complex class I molecules together with its homolog calnexin. Mutated calreticulin is associated with a group of hemopoietic disorders, especially myeloproliferative neoplasms. Currently only the cellular immune response to mutated calreticulin has been described, although preliminary findings have indicated that antibodies to mutated calreticulin are not specific for myeloproliferative disorders. These findings have prompted us to characterize the humoral immune response to mutated calreticulin and its chaperone homologue calnexin. PATIENTS AND METHODS We analyzed sera from myeloproliferative neoplasm patients, healthy donors and relapsing-remitting multiple sclerosis patients for the occurrence of autoantibodies to wild type and mutated calreticulin forms and to calnexin by enzyme-linked immunosorbent assay. RESULTS Antibodies to mutated calreticulin and calnexin were present at similar levels in serum samples of myeloproliferative neoplasm and multiple sclerosis patients as well as healthy donors. Moreover, a high correlation between antibodies to mutated calreticulin and calnexin was seen for all patient and control groups. Epitope binding studies indicated that cross-reactive antibodies bound to a three-dimensional epitope encompassing a short linear sequence in the C-terminal of mutated calreticulin and calnexin. CONCLUSION Collectively, these findings indicate that calreticulin mutations may be common and not necessarily lead to onset of myeloproliferative neoplasm, possibly due to elimination of cells with mutations. This, in turn, may suggest that additional molecular changes may be required for development of myeloproliferative neoplasm.
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Affiliation(s)
- C Kyllesbech
- Department of Neurology, Valdemar Hansens vej 23, Rigshospitalet, Glostrup, Denmark; Institute of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, Odense M, Denmark
| | - N Trier
- Department of Neurology, Valdemar Hansens vej 23, Rigshospitalet, Glostrup, Denmark
| | - F Mughal
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, Copenhagen Ø, Denmark
| | - P Hansen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, Copenhagen Ø, Denmark
| | - M Holmström
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Borgmester Ib Juuls Vej 25C, Copenhagen University Hospital, Herlev, Denmark; Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, Copenhagen, Denmark
| | - D El Fassi
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen N, Denmark
| | - H Hasselbalch
- Department of Hematology, Zealand University Hospital Roskilde, Sygehusvej 10, Roskilde, Denmark
| | - V Skov
- Department of Hematology, Zealand University Hospital Roskilde, Sygehusvej 10, Roskilde, Denmark
| | - L Kjær
- Department of Hematology, Zealand University Hospital Roskilde, Sygehusvej 10, Roskilde, Denmark
| | - M Andersen
- Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, Copenhagen, Denmark
| | - E Ciplys
- Institute of Biotechnology, University of Vilnius, Sauletékio al. 7, Vilnius, Lithuania
| | - R Slibinskas
- Institute of Biotechnology, University of Vilnius, Sauletékio al. 7, Vilnius, Lithuania
| | - J Frederiksen
- Department of Neurology, Valdemar Hansens vej 23, Rigshospitalet, Glostrup, Denmark
| | - P Højrup
- Institute of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, Odense M, Denmark
| | - G Houen
- Department of Neurology, Valdemar Hansens vej 23, Rigshospitalet, Glostrup, Denmark; Institute of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, Odense M, Denmark.
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11
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Gao H, Belova V, La Porta F, Cingolani JS, Andersen M, Saedi M, Konovalov OV, Jankowski M, Heenen HH, Groot IMN, Renaud G, Reuter K. Graphene at Liquid Copper Catalysts: Atomic-Scale Agreement of Experimental and First-Principles Adsorption Height. Adv Sci (Weinh) 2022; 9:e2204684. [PMID: 36351774 PMCID: PMC9798965 DOI: 10.1002/advs.202204684] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Liquid metal catalysts have recently attracted attention for synthesizing high-quality 2D materials facilitated via the catalysts' perfectly smooth surface. However, the microscopic catalytic processes occurring at the surface are still largely unclear because liquid metals escape the accessibility of traditional experimental and computational surface science approaches. Hence, numerous controversies are found regarding different applications, with graphene (Gr) growth on liquid copper (Cu) as a prominent prototype. In this work, novel in situ and in silico techniques are employed to achieve an atomic-level characterization of the graphene adsorption height above liquid Cu, reaching quantitative agreement within 0.1 Å between experiment and theory. The results are obtained via in situ synchrotron X-ray reflectivity (XRR) measurements over wide-range q-vectors and large-scale molecular dynamics simulations based on efficient machine-learning (ML) potentials trained to first-principles density functional theory (DFT) data. The computational insight is demonstrated to be robust against inherent DFT errors and reveals the nature of graphene binding to be highly comparable at liquid Cu and solid Cu(111). Transporting the predictive first-principles quality via ML potentials to the scales required for liquid metal catalysis thus provides a powerful approach to reach microscopic understanding, analogous to the established computational approaches for catalysis at solid surfaces.
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Affiliation(s)
- Hao Gao
- Fritz‐Haber‐Institut der Max‐Planck‐GesellschaftFaradayweg 4–614195BerlinGermany
| | - Valentina Belova
- The European Synchrotron‐ ESRF71 Avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Francesco La Porta
- The European Synchrotron‐ ESRF71 Avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Juan Santiago Cingolani
- Chair for Theoretical Chemistry and Catalysis Research CenterTechnische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Mie Andersen
- Aarhus Institute of Advanced Studies & Center for Interstellar CatalysisDepartment of Physics and AstronomyAarhus UniversityAarhus CDK‐8000Denmark
| | - Mehdi Saedi
- Leiden Institute of ChemistryLeiden UniversityP.O. Box 9502RA Leiden2300The Netherlands
| | - Oleg V. Konovalov
- The European Synchrotron‐ ESRF71 Avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Maciej Jankowski
- The European Synchrotron‐ ESRF71 Avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Hendrik H. Heenen
- Fritz‐Haber‐Institut der Max‐Planck‐GesellschaftFaradayweg 4–614195BerlinGermany
| | - Irene M. N. Groot
- Leiden Institute of ChemistryLeiden UniversityP.O. Box 9502RA Leiden2300The Netherlands
| | - Gilles Renaud
- Université Grenoble AlpesCEA, IRIG/MEM/NRSGrenoble38000France
| | - Karsten Reuter
- Fritz‐Haber‐Institut der Max‐Planck‐GesellschaftFaradayweg 4–614195BerlinGermany
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12
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Højsager FD, Andersen M, Juul A, Nielsen F, Möller S, Christensen HT, Grøntved A, Grandjean P, Jensen TK. Prenatal and early postnatal exposure to perfluoroalkyl substances and bone mineral content and density in the Odense child cohort. Environ Int 2022; 167:107417. [PMID: 35914335 DOI: 10.1016/j.envint.2022.107417] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 11/17/2021] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Exposure to perfluoroalkyl substances (PFAS) has been associated with lower bone mineral density (BMD) in animal and human studies, but prospective data from children are limited. OBJECTIVES To determine associations between prenatal and early postnatal PFAS exposure and BMD at age 7 years. METHODS In the Odense Child Cohort, Denmark, pregnant women were recruited in 2010-2012, and their children were invited for subsequent health examinations. At 12 weeks of gestation the pregnant women delivered a serum sample, and at age 18 months serum was obtained from the child to measure perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA) and perfluorodecanoic acid (PFDA) by LC-MS/MS. At age 7 years DXA scans were performed to measure bone mineral content (BMC) and BMD Z-score. PFAS in pregnancy (n = 924) and/or at age 18 months (n = 511) were regressed against DXA measurements, adjusted for maternal education, child height Z-score, sex (for BMC) and for postnatal exposure, additionally duration of total breastfeeding. We additionally performed structural equation models determining combined effects of pre-and postnatal PFAS exposures. RESULTS Higher prenatal and early postnatal serum concentrations of all measured PFAS were associated with lower BMC and BMD Z-scores at age 7 years, all estimates were negative although not all significant. For each doubling of prenatal or 18-month exposure to PFDA, BMD Z-scores were lowered by -0.07 (95 % CI -0.10; -0.03) and -0.14 (-0.25; -0.03), respectively after adjustment. Pre- and postnatal PFAS were correlated, but structural equation models suggested that associations with BMD were stronger for 18-month than prenatal PFAS exposure. DISCUSSION Bone density is established in childhood, and a reduction in BMD during early childhood may have long-term implication for peak bone mass and lifelong bone health. Future studies of the impact of PFAS exposure on fracture incidence will help elucidate the clinical relevance.
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Affiliation(s)
- F D Højsager
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark.
| | - M Andersen
- Department of Endocrinology and Metabolism, Odense University, Denmark; Institute of Clinical Research, Faculty of Health Sciences, University of Southern Denmark
| | - A Juul
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Denmark
| | - F Nielsen
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark
| | - S Möller
- Odense Patient data Explorative Network (OPEN), Odense, Denmark
| | - H T Christensen
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - A Grøntved
- Exercise Epidemiology, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; Centre of Research in Childhood Health, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - P Grandjean
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark; Depertment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, USA
| | - T K Jensen
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 17A, 5000 Odense, Denmark; Odense Patient data Explorative Network (OPEN), Odense, Denmark; Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
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13
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Boix V, Xu W, D’Acunto G, Stubbe J, Gallo T, Døvre Strømsheim M, Zhu S, Scardamaglia M, Shavorskiy A, Reuter K, Andersen M, Knudsen J. Graphene as an Adsorption Template for Studying Double Bond Activation in Catalysis. J Phys Chem C Nanomater Interfaces 2022; 126:14116-14124. [PMID: 36060283 PMCID: PMC9425632 DOI: 10.1021/acs.jpcc.2c02293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Hydrogenated graphene (H-Gr) is an extensively studied system not only because of its capabilities as a simplified model system for hydrocarbon chemistry but also because hydrogenation is a compelling method for Gr functionalization. However, knowledge of how H-Gr interacts with molecules at higher pressures and ambient conditions is lacking. Here we present experimental and theoretical evidence that room temperature O2 exposure at millibar pressures leads to preferential removal of H dimers on H-functionalized graphene, leaving H clusters on the surface. Our density functional theory (DFT) analysis shows that the removal of H dimers is the result of water or hydrogen peroxide formation. For water formation, we show that the two H atoms in the dimer motif attack one end of the physisorbed O2 molecule. Moreover, by comparing the reaction pathways in a vacuum with the ones on free-standing graphene and on the graphene/Ir(111) system, we find that the main role of graphene is to arrange the H atoms in geometrical positions, which facilitates the activation of the O=O double bond.
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Affiliation(s)
- Virginia Boix
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Sölvegatan 14, 22362 Lund, Sweden
- NanoLund, Lund University, Professorsgatan 1, 22362 Lund, Sweden
| | - Wenbin Xu
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
- Chair
for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85748 Garching, Germany
| | - Giulio D’Acunto
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Sölvegatan 14, 22362 Lund, Sweden
- NanoLund, Lund University, Professorsgatan 1, 22362 Lund, Sweden
| | - Johannes Stubbe
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Sölvegatan 14, 22362 Lund, Sweden
| | - Tamires Gallo
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Sölvegatan 14, 22362 Lund, Sweden
| | - Marie Døvre Strømsheim
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, Trondheim 7034, Norway
| | - Suyun Zhu
- MAX IV Laboratory, Lund University, Fotongatan 2, 22484 Lund, Sweden
| | | | - Andrey Shavorskiy
- MAX IV Laboratory, Lund University, Fotongatan 2, 22484 Lund, Sweden
| | - Karsten Reuter
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Mie Andersen
- Aarhus Institute
of Advanced Studies, Aarhus University, Aarhus C DK-8000, Denmark
- Department
of Physics and Astronomy - Center for Interstellar Catalysis, Aarhus University, Aarhus C DK-8000, Denmark
| | - Jan Knudsen
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Sölvegatan 14, 22362 Lund, Sweden
- NanoLund, Lund University, Professorsgatan 1, 22362 Lund, Sweden
- MAX IV Laboratory, Lund University, Fotongatan 2, 22484 Lund, Sweden
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14
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Proietti M, Romiti GF, Vitolo M, Harrison SL, Lane DA, Fauchier L, Marin F, Näbauer M, Potpara TS, Dan GA, Maggioni AP, Cesari M, Boriani G, Lip GYH, Ekmekçiu U, Paparisto V, Tase M, Gjergo H, Dragoti J, Goda A, Ciutea M, Ahadi N, el Husseini Z, Raepers M, Leroy J, Haushan P, Jourdan A, Lepiece C, Desteghe L, Vijgen J, Koopman P, Van Genechten G, Heidbuchel H, Boussy T, De Coninck M, Van Eeckhoutte H, Bouckaert N, Friart A, Boreux J, Arend C, Evrard P, Stefan L, Hoffer E, Herzet J, Massoz M, Celentano C, Sprynger M, Pierard L, Melon P, Van Hauwaert B, Kuppens C, Faes D, Van Lier D, Van Dorpe A, Gerardy A, Deceuninck O, Xhaet O, Dormal F, Ballant E, Blommaert D, Yakova D, Hristov M, Yncheva T, Stancheva N, Tisheva S, Tokmakova M, Nikolov F, Gencheva D, Shalganov T, Kunev B, Stoyanov M, Marchov D, Gelev V, Traykov V, Kisheva A, Tsvyatkov H, Shtereva R, Bakalska-Georgieva S, Slavcheva S, Yotov Y, Kubíčková M, Marni Joensen A, Gammelmark A, Hvilsted Rasmussen L, Dinesen P, Riahi S, Krogh Venø S, Sorensen B, Korsgaard A, Andersen K, Fragtrup Hellum C, Svenningsen A, Nyvad O, Wiggers P, May O, Aarup A, Graversen B, Jensen L, Andersen M, Svejgaard M, Vester S, Hansen S, Lynggaard V, Ciudad M, Vettus R, Muda P, Maestre A, Castaño S, Cheggour S, Poulard J, Mouquet V, Leparrée S, Bouet J, Taieb J, Doucy A, Duquenne H, Furber A, Dupuis J, Rautureau J, Font M, Damiano P, Lacrimini M, Abalea J, Boismal S, Menez T, Mansourati J, Range G, Gorka H, Laure C, Vassalière C, Elbaz N, Lellouche N, Djouadi K, Roubille F, Dietz D, Davy J, Granier M, Winum P, Leperchois-Jacquey C, Kassim H, Marijon E, Le Heuzey J, Fedida J, Maupain C, Himbert C, Gandjbakhch E, Hidden-Lucet F, Duthoit G, Badenco N, Chastre T, Waintraub X, Oudihat M, Lacoste J, Stephan C, Bader H, Delarche N, Giry L, Arnaud D, Lopez C, Boury F, Brunello I, Lefèvre M, Mingam R, Haissaguerre M, Le Bidan M, Pavin D, Le Moal V, Leclercq C, Piot O, Beitar T, Martel I, Schmid A, Sadki N, Romeyer-Bouchard C, Da Costa A, Arnault I, Boyer M, Piat C, Fauchier L, Lozance N, Nastevska S, Doneva A, Fortomaroska Milevska B, Sheshoski B, Petroska K, Taneska N, Bakrecheski N, Lazarovska K, Jovevska S, Ristovski V, Antovski A, Lazarova E, Kotlar I, Taleski J, Poposka L, Kedev S, Zlatanovik N, Jordanova S, Bajraktarova Proseva T, Doncovska S, Maisuradze D, Esakia A, Sagirashvili E, Lartsuliani K, Natelashvili N, Gumberidze N, Gvenetadze R, Etsadashvili K, Gotonelia N, Kuridze N, Papiashvili G, Menabde I, Glöggler S, Napp A, Lebherz C, Romero H, Schmitz K, Berger M, Zink M, Köster S, Sachse J, Vonderhagen E, Soiron G, Mischke K, Reith R, Schneider M, Rieker W, Boscher D, Taschareck A, Beer A, Oster D, Ritter O, Adamczewski J, Walter S, Frommhold A, Luckner E, Richter J, Schellner M, Landgraf S, Bartholome S, Naumann R, Schoeler J, Westermeier D, William F, Wilhelm K, Maerkl M, Oekinghaus R, Denart M, Kriete M, Tebbe U, Scheibner T, Gruber M, Gerlach A, Beckendorf C, Anneken L, Arnold M, Lengerer S, Bal Z, Uecker C, Förtsch H, Fechner S, Mages V, Martens E, Methe H, Schmidt T, Schaeffer B, Hoffmann B, Moser J, Heitmann K, Willems S, Willems S, Klaus C, Lange I, Durak M, Esen E, Mibach F, Mibach H, Utech A, Gabelmann M, Stumm R, Ländle V, Gartner C, Goerg C, Kaul N, Messer S, Burkhardt D, Sander C, Orthen R, Kaes S, Baumer A, Dodos F, Barth A, Schaeffer G, Gaertner J, Winkler J, Fahrig A, Aring J, Wenzel I, Steiner S, Kliesch A, Kratz E, Winter K, Schneider P, Haag A, Mutscher I, Bosch R, Taggeselle J, Meixner S, Schnabel A, Shamalla A, Hötz H, Korinth A, Rheinert C, Mehltretter G, Schön B, Schön N, Starflinger A, Englmann E, Baytok G, Laschinger T, Ritscher G, Gerth A, Dechering D, Eckardt L, Kuhlmann M, Proskynitopoulos N, Brunn J, Foth K, Axthelm C, Hohensee H, Eberhard K, Turbanisch S, Hassler N, Koestler A, Stenzel G, Kschiwan D, Schwefer M, Neiner S, Hettwer S, Haeussler-Schuchardt M, Degenhardt R, Sennhenn S, Steiner S, Brendel M, Stoehr A, Widjaja W, Loehndorf S, Logemann A, Hoskamp J, Grundt J, Block M, Ulrych R, Reithmeier A, Panagopoulos V, Martignani C, Bernucci D, Fantecchi E, Diemberger I, Ziacchi M, Biffi M, Cimaglia P, Frisoni J, Boriani G, Giannini I, Boni S, Fumagalli S, Pupo S, Di Chiara A, Mirone P, Fantecchi E, Boriani G, Pesce F, Zoccali C, Malavasi VL, Mussagaliyeva A, Ahyt B, Salihova Z, Koshum-Bayeva K, Kerimkulova A, Bairamukova A, Mirrakhimov E, Lurina B, Zuzans R, Jegere S, Mintale I, Kupics K, Jubele K, Erglis A, Kalejs O, Vanhear K, Burg M, Cachia M, Abela E, Warwicker S, Tabone T, Xuereb R, Asanovic D, Drakalovic D, Vukmirovic M, Pavlovic N, Music L, Bulatovic N, Boskovic A, Uiterwaal H, Bijsterveld N, De Groot J, Neefs J, van den Berg N, Piersma F, Wilde A, Hagens V, Van Es J, Van Opstal J, Van Rennes B, Verheij H, Breukers W, Tjeerdsma G, Nijmeijer R, Wegink D, Binnema R, Said S, Erküner Ö, Philippens S, van Doorn W, Crijns H, Szili-Torok T, Bhagwandien R, Janse P, Muskens A, van Eck M, Gevers R, van der Ven N, Duygun A, Rahel B, Meeder J, Vold A, Holst Hansen C, Engset I, Atar D, Dyduch-Fejklowicz B, Koba E, Cichocka M, Sokal A, Kubicius A, Pruchniewicz E, Kowalik-Sztylc A, Czapla W, Mróz I, Kozlowski M, Pawlowski T, Tendera M, Winiarska-Filipek A, Fidyk A, Slowikowski A, Haberka M, Lachor-Broda M, Biedron M, Gasior Z, Kołodziej M, Janion M, Gorczyca-Michta I, Wozakowska-Kaplon B, Stasiak M, Jakubowski P, Ciurus T, Drozdz J, Simiera M, Zajac P, Wcislo T, Zycinski P, Kasprzak J, Olejnik A, Harc-Dyl E, Miarka J, Pasieka M, Ziemińska-Łuć M, Bujak W, Śliwiński A, Grech A, Morka J, Petrykowska K, Prasał M, Hordyński G, Feusette P, Lipski P, Wester A, Streb W, Romanek J, Woźniak P, Chlebuś M, Szafarz P, Stanik W, Zakrzewski M, Kaźmierczak J, Przybylska A, Skorek E, Błaszczyk H, Stępień M, Szabowski S, Krysiak W, Szymańska M, Karasiński J, Blicharz J, Skura M, Hałas K, Michalczyk L, Orski Z, Krzyżanowski K, Skrobowski A, Zieliński L, Tomaszewska-Kiecana M, Dłużniewski M, Kiliszek M, Peller M, Budnik M, Balsam P, Opolski G, Tymińska A, Ozierański K, Wancerz A, Borowiec A, Majos E, Dabrowski R, Szwed H, Musialik-Lydka A, Leopold-Jadczyk A, Jedrzejczyk-Patej E, Koziel M, Lenarczyk R, Mazurek M, Kalarus Z, Krzemien-Wolska K, Starosta P, Nowalany-Kozielska E, Orzechowska A, Szpot M, Staszel M, Almeida S, Pereira H, Brandão Alves L, Miranda R, Ribeiro L, Costa F, Morgado F, Carmo P, Galvao Santos P, Bernardo R, Adragão P, Ferreira da Silva G, Peres M, Alves M, Leal M, Cordeiro A, Magalhães P, Fontes P, Leão S, Delgado A, Costa A, Marmelo B, Rodrigues B, Moreira D, Santos J, Santos L, Terchet A, Darabantiu D, Mercea S, Turcin Halka V, Pop Moldovan A, Gabor A, Doka B, Catanescu G, Rus H, Oboroceanu L, Bobescu E, Popescu R, Dan A, Buzea A, Daha I, Dan G, Neuhoff I, Baluta M, Ploesteanu R, Dumitrache N, Vintila M, Daraban A, Japie C, Badila E, Tewelde H, Hostiuc M, Frunza S, Tintea E, Bartos D, Ciobanu A, Popescu I, Toma N, Gherghinescu C, Cretu D, Patrascu N, Stoicescu C, Udroiu C, Bicescu G, Vintila V, Vinereanu D, Cinteza M, Rimbas R, Grecu M, Cozma A, Boros F, Ille M, Tica O, Tor R, Corina A, Jeewooth A, Maria B, Georgiana C, Natalia C, Alin D, Dinu-Andrei D, Livia M, Daniela R, Larisa R, Umaar S, Tamara T, Ioachim Popescu M, Nistor D, Sus I, Coborosanu O, Alina-Ramona N, Dan R, Petrescu L, Ionescu G, Popescu I, Vacarescu C, Goanta E, Mangea M, Ionac A, Mornos C, Cozma D, Pescariu S, Solodovnicova E, Soldatova I, Shutova J, Tjuleneva L, Zubova T, Uskov V, Obukhov D, Rusanova G, Soldatova I, Isakova N, Odinsova S, Arhipova T, Kazakevich E, Serdechnaya E, Zavyalova O, Novikova T, Riabaia I, Zhigalov S, Drozdova E, Luchkina I, Monogarova Y, Hegya D, Rodionova L, Rodionova L, Nevzorova V, Soldatova I, Lusanova O, Arandjelovic A, Toncev D, Milanov M, Sekularac N, Zdravkovic M, Hinic S, Dimkovic S, Acimovic T, Saric J, Polovina M, Potpara T, Vujisic-Tesic B, Nedeljkovic M, Zlatar M, Asanin M, Vasic V, Popovic Z, Djikic D, Sipic M, Peric V, Dejanovic B, Milosevic N, Stevanovic A, Andric A, Pencic B, Pavlovic-Kleut M, Celic V, Pavlovic M, Petrovic M, Vuleta M, Petrovic N, Simovic S, Savovic Z, Milanov S, Davidovic G, Iric-Cupic V, Simonovic D, Stojanovic M, Stojanovic S, Mitic V, Ilic V, Petrovic D, Deljanin Ilic M, Ilic S, Stoickov V, Markovic S, Kovacevic S, García Fernandez A, Perez Cabeza A, Anguita M, Tercedor Sanchez L, Mau E, Loayssa J, Ayarra M, Carpintero M, Roldán Rabadan I, Leal M, Gil Ortega M, Tello Montoliu A, Orenes Piñero E, Manzano Fernández S, Marín F, Romero Aniorte A, Veliz Martínez A, Quintana Giner M, Ballesteros G, Palacio M, Alcalde O, García-Bolao I, Bertomeu Gonzalez V, Otero-Raviña F, García Seara J, Gonzalez Juanatey J, Dayal N, Maziarski P, Gentil-Baron P, Shah D, Koç M, Onrat E, Dural IE, Yilmaz K, Özin B, Tan Kurklu S, Atmaca Y, Canpolat U, Tokgozoglu L, Dolu AK, Demirtas B, Sahin D, Ozcan Celebi O, Diker E, Gagirci G, Turk UO, Ari H, Polat N, Toprak N, Sucu M, Akin Serdar O, Taha Alper A, Kepez A, Yuksel Y, Uzunselvi A, Yuksel S, Sahin M, Kayapinar O, Ozcan T, Kaya H, Yilmaz MB, Kutlu M, Demir M, Gibbs C, Kaminskiene S, Bryce M, Skinner A, Belcher G, Hunt J, Stancombe L, Holbrook B, Peters C, Tettersell S, Shantsila A, Lane D, Senoo K, Proietti M, Russell K, Domingos P, Hussain S, Partridge J, Haynes R, Bahadur S, Brown R, McMahon S, Y H Lip G, McDonald J, Balachandran K, Singh R, Garg S, Desai H, Davies K, Goddard W, Galasko G, Rahman I, Chua Y, Payne O, Preston S, Brennan O, Pedley L, Whiteside C, Dickinson C, Brown J, Jones K, Benham L, Brady R, Buchanan L, Ashton A, Crowther H, Fairlamb H, Thornthwaite S, Relph C, McSkeane A, Poultney U, Kelsall N, Rice P, Wilson T, Wrigley M, Kaba R, Patel T, Young E, Law J, Runnett C, Thomas H, McKie H, Fuller J, Pick S, Sharp A, Hunt A, Thorpe K, Hardman C, Cusack E, Adams L, Hough M, Keenan S, Bowring A, Watts J, Zaman J, Goffin K, Nutt H, Beerachee Y, Featherstone J, Mills C, Pearson J, Stephenson L, Grant S, Wilson A, Hawksworth C, Alam I, Robinson M, Ryan S, Egdell R, Gibson E, Holland M, Leonard D, Mishra B, Ahmad S, Randall H, Hill J, Reid L, George M, McKinley S, Brockway L, Milligan W, Sobolewska J, Muir J, Tuckis L, Winstanley L, Jacob P, Kaye S, Morby L, Jan A, Sewell T, Boos C, Wadams B, Cope C, Jefferey P, Andrews N, Getty A, Suttling A, Turner C, Hudson K, Austin R, Howe S, Iqbal R, Gandhi N, Brophy K, Mirza P, Willard E, Collins S, Ndlovu N, Subkovas E, Karthikeyan V, Waggett L, Wood A, Bolger A, Stockport J, Evans L, Harman E, Starling J, Williams L, Saul V, Sinha M, Bell L, Tudgay S, Kemp S, Brown J, Frost L, Ingram T, Loughlin A, Adams C, Adams M, Hurford F, Owen C, Miller C, Donaldson D, Tivenan H, Button H, Nasser A, Jhagra O, Stidolph B, Brown C, Livingstone C, Duffy M, Madgwick P, Roberts P, Greenwood E, Fletcher L, Beveridge M, Earles S, McKenzie D, Beacock D, Dayer M, Seddon M, Greenwell D, Luxton F, Venn F, Mills H, Rewbury J, James K, Roberts K, Tonks L, Felmeden D, Taggu W, Summerhayes A, Hughes D, Sutton J, Felmeden L, Khan M, Walker E, Norris L, O’Donohoe L, Mozid A, Dymond H, Lloyd-Jones H, Saunders G, Simmons D, Coles D, Cotterill D, Beech S, Kidd S, Wrigley B, Petkar S, Smallwood A, Jones R, Radford E, Milgate S, Metherell S, Cottam V, Buckley C, Broadley A, Wood D, Allison J, Rennie K, Balian L, Howard L, Pippard L, Board S, Pitt-Kerby T. Epidemiology and impact of frailty in patients with atrial fibrillation in Europe. Age Ageing 2022; 51:6670566. [PMID: 35997262 DOI: 10.1093/ageing/afac192] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [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: 03/17/2022] [Revised: 06/08/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Frailty is a medical syndrome characterised by reduced physiological reserve and increased vulnerability to stressors. Data regarding the relationship between frailty and atrial fibrillation (AF) are still inconsistent. OBJECTIVES We aim to perform a comprehensive evaluation of frailty in a large European cohort of AF patients. METHODS A 40-item frailty index (FI) was built according to the accumulation of deficits model in the AF patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. Association of baseline characteristics, clinical management, quality of life, healthcare resources use and risk of outcomes with frailty was examined. RESULTS Among 10,177 patients [mean age (standard deviation) 69.0 (11.4) years, 4,103 (40.3%) females], 6,066 (59.6%) were pre-frail and 2,172 (21.3%) were frail, whereas only 1,939 (19.1%) were considered robust. Baseline thromboembolic and bleeding risks were independently associated with increasing FI. Frail patients with AF were less likely to be treated with oral anticoagulants (OACs) (odds ratio 0.70, 95% confidence interval 0.55-0.89), especially with non-vitamin K antagonist OACs and managed with a rhythm control strategy, compared with robust patients. Increasing frailty was associated with a higher risk for all outcomes examined, with a non-linear exponential relationship. The use of OAC was associated with a lower risk of outcomes, except in patients with very/extremely high frailty. CONCLUSIONS In this large cohort of AF patients, there was a high burden of frailty, influencing clinical management and risk of adverse outcomes. The clinical benefit of OAC is maintained in patients with high frailty, but not in very high/extremely frail ones.
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Affiliation(s)
- Marco Proietti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giulio Francesco Romiti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Translational and Precision Medicine, Sapienza - University of Rome, Italy
| | - Marco Vitolo
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy.,Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Stephanie L Harrison
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - Deirdre A Lane
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Laurent Fauchier
- Service de Cardiologie, Centre Hospitalier Universitaire Trousseau, Tours, France
| | - Francisco Marin
- Department of Cardiology, Hospital Universitario Virgen de la Arrixaca, IMIB-Arrixaca, University of Murcia, CIBER-CV, Murcia, Spain
| | - Michael Näbauer
- Department of Cardiology, Ludwig-Maximilians-University, Munich, Germany
| | - Tatjana S Potpara
- School of Medicine, University of Belgrade, Belgrade, Serbia.,Clinical Center of Serbia, Belgrade, Serbia
| | - Gheorghe-Andrei Dan
- University of Medicine, 'Carol Davila', Colentina University Hospital, Bucharest, Romania
| | - Aldo P Maggioni
- ANMCO Research Center, Heart Care Foundation, Florence, Italy
| | - Matteo Cesari
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Xu W, Reuter K, Andersen M. Predicting binding motifs of complex adsorbates using machine learning with a physics-inspired graph representation. Nat Comput Sci 2022; 2:443-450. [PMID: 38177870 DOI: 10.1038/s43588-022-00280-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/17/2022] [Indexed: 01/06/2024]
Abstract
Computational screening in heterogeneous catalysis relies increasingly on machine learning models for predicting key input parameters due to the high cost of computing these directly using first-principles methods. This becomes especially relevant when considering complex materials spaces such as alloys, or complex reaction mechanisms with adsorbates that may exhibit bi- or higher-dentate adsorption motifs. Here we present a data-efficient approach to the prediction of binding motifs and associated adsorption enthalpies of complex adsorbates at transition metals and their alloys based on a customized Wasserstein Weisfeiler-Lehman graph kernel and Gaussian process regression. The model shows good predictive performance, not only for the elemental transition metals on which it was trained, but also for an alloy based on these transition metals. Furthermore, incorporation of minimal new training data allows for predicting an out-of-domain transition metal. We believe the model may be useful in active learning approaches, for which we present an ensemble uncertainty estimation approach.
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Affiliation(s)
- Wenbin Xu
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Garching, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Karsten Reuter
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Mie Andersen
- Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.
- Department of Physics and Astronomy-Center for Interstellar Catalysis, Aarhus University, Aarhus, Denmark.
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Deimel M, Prats H, Seibt M, Reuter K, Andersen M. Selectivity Trends and Role of Adsorbate–Adsorbate Interactions in CO Hydrogenation on Rhodium Catalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Deimel
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Hector Prats
- Department of Chemical Engineering, University College London, Roberts Building, Torrington Place, London WC1E 7JE, UK
| | - Michael Seibt
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Karsten Reuter
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Mie Andersen
- Aarhus Institute of Advanced Studies, Aarhus University, 8000 Aarhus C, Denmark
- Center for Interstellar Catalysis, Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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17
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Andersen M, Lund TK, Jensen THL, Iversen M, Perch M, Baslund B. POS0008 THE UTILITY OF TRANS-BRONCHIAL LUNG BIOPSIES TO GUIDE THE TREATMENT IN PATIENTS WITH RHEUMATIC INFLAMMATORY DISEASES: A RETROSPECTIVE CROSS-SECTIONAL STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundRheumatic inflammatory disease associated interstitial lung disease (R-ILD) is associated with significant mortality and morbidity1. On a patient-to-patient level, imaging which is a cornerstone in diagnosing R-ILD may not be sufficent to determine the underlying cause of the imaging pathology or the degree of reversibilty. Furthermore the precense of co-morbidity and diffential diagnoses such as infections or malignacy needs to be taken into account when dertemining the therapeutic strategy. The role of transbronchial lung biopsies (TBB) in the diagnostic workup of R-ILD is unclear and TBB is not generally recommended2-4.ObjectivesThe study objective was to examine the utility of TBB to guide treatment in a population of patients with R-ILD reffered for bronchoscopy.MethodsAll patients from the Department of Rheumatology, Rigshospitalet, Copenhagen, Denmark referred for a TBB on the suspicion of R-ILD, from 2002 to 2016 were identified.Patient demographics as well as smoking status, previous lung disease, pulmonary function test, CTD-diagnosis, imaging results and immunomodulatory therapy pre- and post-bronchoscopy were obtained.Histology findings were used to dichotomize patients into a high inflammatory group or a low inflammatory group. The high inflammation group primarily consisted of non-specific interstitial pneumonia (NSIP), organizing pneumonia (OP), lymphocytic infiltrating pneumonia (LIP) and granulomatous inflammation whereas the low inflammation group primarily consisted of histological findings of usual interstitial pneumonitis (UIP) and biopsies describing fibrosis and/or sparse unspecific inflammation. Therapeutic consequence was defined as intensification of therapy. Differences in treatment intensification were calculated using a binominal logistic regression model. Differences in treatment intensification were calculated using a binominal logistic regression model adjusted for age, gender, smoking status, previous lung disease, diffusion capacity, rheumatologic diagnose, c-reactive protein level prior to TBB. Covariates with P>0.1 were excluded by a stepwise ‘backwards’ elimination.Results96 patients had TBB performed. Biopsies from 55 patients were categorized as high-inflammatory and 41 as low-inflammatory, respectively. In the high inflammatory group thirty-eight (69%) had their therapy intensified compared to 6 (14%) in the low-inflammatory group (P <0.001). TBB inflammation type was the only covariate that was significantly associated with treatment intensification.No procedure related complications were registered.ConclusionTBB findings can guide treatment strategy in R-ILD patients with suspected activity in the pulmonary disease. TBB appears safe and could be considered as part of the diagnostic workup in patients with inflammatory rheumatic diseases where clinical features, bloodsamples, imaging and/or pulmonary function test do not provide suffcient information to guide the therapeutic strategy.References[1]Mathai SC, Danoff SK. Management of interstitial lung disease associated with connective tissue disease. BMJ. 2016;352:h6819. doi: 10.1136/bmj.h6819 [doi].[2]Sebastiani M, Faverio P, Manfredi A, Cassone G, Vacchi C, Stainer A, et al. Interstitial Pneumonia with Autoimmune Features: Why Rheumatologist-Pulmonologist Collaboration Is Essential. Biomedicines. 2020;9(1). Epub 2020/12/31. doi: 10.3390/biomedicines9010017. PubMed PMID: 33375368; PubMed Central PMCID: PMCPMC7824155.[3]Mochimaru H, Kawamoto M, Enomoto T, Saitoh Y, Abe S, Nei T, et al. Transbronchial biopsy is clinically useful in classifying patients with interstitial pneumonia associated with polymyositis and dermatomyositis. Respirology. 2008;13(6):863-70.[4]Morell F, Reyes L, Domenech G, De GJ, Majo J, Ferrer J. [Diagnoses and diagnostic procedures in 500 consecutive patients with clinical suspicion of interstitial lung disease]. Arch Bronconeumol. 2008;44(4):185-91.Disclosure of InterestsMartin Andersen Employee of: Novo Nordisk A/S: 2010-2015, Thomas K. Lund: None declared, Thomas H. L. Jensen: None declared, Martin Iversen: None declared, Michael Perch Speakers bureau: Mallinckrodt, Novartis, GSK, PulmonX, Consultant of: Ambu, PulmonX, Takeda, Grant/research support from: Roche, Bo Baslund: None declared
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Andersen M, Stockmarr A, Leffers H, Troldborg A, Voss A, Kristensen S, Deleuran B, Dreyer L, Johnsen L, Colic A, Jacobsen S. POS0761 TIME-DEPENDENT ANALYSES OF CLINICAL MANIFESTATIONS OF SYSTEMIC LUPUS ERYTHEMATOSUS IDENTIFY PATIENTS AT HIGH RISK OF INCIDENT PROTEINURIA. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundNephritis (LN) in systemic lupus erythematosus (SLE) is still a major determinant of poor prognosis[1].The vast majority of LN occurs in proximity to the SLE diagnosis[2]. Identification of individuals at high risk, especially early onset SLE, is therefore warranted. Inclusion of risk factors prior to the SLE diagnosis may thus be of importance to enable sufficient risk factor profiling. SLE-patients seem to cluster according to clinical and serological phenotypes suggesting distinct disease trajectories[3-5].ObjectivesTo determine if incident proteinuria associated with the debut age of non-renal SLE characteristics.MethodsData of SLE patients from six Danish centers were obtained from the Danbio-database from 2017 – 2020. The occurrence and timing of proteinuria was compared with first time onset of any non-renal manifestations as defined by the 1997 American College of Rheumatology Classification Criteria. Cox-regression models were used to identify risk factors for incident proteinuria. Time from first occurring non-renal manifestation to incident proteinuria or censoring defined time at risk. Covariates were eliminated if p >0.01 in a ‘backwards’ manner. After the model reduction process p-values <0.05 were considered statistically significant.Results586 SLE patients, mainly white (94%) women (88%), mean age at inclusion of 34.6 years (standard deviation, SD = 0.6 years) and observed for a mean of 14.9 years (SD =0.5 years), were recruited. The cumulative prevalence of proteinuria was 40%. Male gender hazard ratio, HR = 1.35 (range 0.77-2.35), p=0.009, lymphopenia HR = 1.77 (range 1.24-2.52), p=0.005 were associated with incident proteinuria. In contrast, patients with discoid rash had lower risk of incident proteinuria HR 0.42 (range 0.21-0.83), p=0.01. Male patients with lymphopenia had the highest risk of proteinuria with a one-, 5- and 10-year risk of proteinuria ranging from 9-27%, 34-75% and 51-89 %, depending on the age at presentation (debut at 20, 30, 40 or 50 years). The corresponding risk-profiles for women with lymphopenia were 3-9%, 8-34% and 12-58%, respectively, as illustrated in Figure 1.ConclusionThe occurrences of lymphopenia and discoid rash were oppositely associated with risk of incident proteinuria and the risk effects varied according to gender and patient age at onset of these manifestations. Thus, the risk of proteinuria may not be constant but could vary according to presentation of non-renal manifestations that may call for a differentiated clinical follow-up. Based on these findings, we suggest that the debut age of known prognostic factors, even prior to the SLE diagnosis should be considered when designing prognostic statistical models.References[1]Faurschou, M., et al., Prognostic factors in lupus nephritis: diagnostic and therapeutic delay increases the risk of terminal renal failure. J Rheumatol, 2006. 33(8): p. 1563-9.[2]Hanly, J.G., et al., The frequency and outcome of lupus nephritis: results from an international inception cohort study. Rheumatology (Oxford), 2016. 55(2): p. 252-62.[3]Diaz-Gallo, L.M., et al., Four Systemic Lupus Erythematosus Subgroups, Defined by Autoantibodies Status, Differ Regarding HLA-DRB1 Genotype Associations and Immunological and Clinical Manifestations. ACR Open Rheumatol, 2022. 4(1): p. 27-39.[4]Jacobsen, S., et al., A multicentre study of 513 Danish patients with systemic lupus erythematosus. II. Disease mortality and clinical factors of prognostic value. Clin Rheumatol, 1998. 17(6): p. 478-84.[5]Leffers, H.C.B., et al., Smoking associates with distinct clinical phenotypes in patients with systemic lupus erythematosus: a nationwide Danish cross-sectional study. Lupus Sci Med, 2021. 8(1).Disclosure of InterestsMartin Andersen Employee of: Novo Nordisk A/S: 2010-2014, Anders Stockmarr: None declared, Henrik Leffers: None declared, Anne Troldborg: None declared, Anne Voss: None declared, Salome Kristensen: None declared, Bent Deleuran: None declared, Lene Dreyer Speakers bureau: Speakers bureau: Eli Lilly, Galderma and Janssen, Grant/research support from: Grant from BMS outside the present work, Laura Johnsen: None declared, Ada Colic: None declared, Søren Jacobsen: None declared
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Skovsgaard Itenov K, Søe N, Bartels EM, Bliddal H, Andersen M. AB0103 SITE SPECIFICITY OF RHEUMATOID ARTHRITIS INFLAMMATION: A SECONDARY ANALYSIS OF BIOPSIES FROM RADIAL AND ULNAR ASPECTS OF MCP JOINTS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.5196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundUlnar drift is a common complication of Rheumatoid Arthritis (RA) (1,2). There is no clear consensus regarding the etiology of the hand deformity. Observations from corrective hand surgery and other studies have noted more pronounced inflammation in the radial site of the MCP-joints (3,4). This could partly explain the pathophysiology behind the ulnar deviation.ObjectivesTo determine if there is more pronounced inflammation, measured by increased CD-68 expression (5) and Krenn-synovitis score (6), at the radial side of the MCP joints when compared to the ulnar side, in patients with verified RA.MethodsWe included RA patients from a previous study who had biopsies taken from the most affected joints based on clinical examination and ultrasound (7). Twenty-nine PIP-, MCP- and wrist-joints were biopsied. Biopsies from the MCP-joints were taken from the dorso-ulnar and dorso-radial concavity. Inflammation was graded by the Krenn-synovitis score (0-9) and the density of CD-68-positive cells (%). The difference between radial and ulnar joint inflammation was calculated by paired t-test. P-value <0.05 was considered statistically significant.ResultsIn 8 patients biopsies were taken from both the ulnar and the radial site of the same MCP-joint. The mean difference in inflammation on the radial and ulnar site of MCP-joints was based on differences in CD-68 density: 0,67% (95%-CI -4,77 to 6,10; P = 0,77) (Figure 1) and Krenn-score: 0,83 (95%-CI -1,31 to 2,98; P = 0,36), respectively.Figure 1.Paired data on CD-68 percentage in radial and ulnar sitesConclusionThere was no difference in concentration of inflammatory cells or overall synovial pathology between the radial and ulnar site of MCP-joints in RA patients. The impression of a more pronounced inflamed synovium on the radial site of MCP joints, as observed during surgery, does not seem to arise from an immunological preference, but rather to be linked to a larger synovial volume.References[1]Wise KS: The anatomy of the metacarpo-phalangeal joints, with observations of the aetiology of ulnar drift. J. Bone Joint Surg. Br. 1975; 57:485–90[2]Johnsson PM, Eberhardt K: Hand deformities are important signs of disease severity in patients with early rheumatoid arthritis. Rheumatology 2009; 48:1398–1401[3]Philpott H.T. Synovial tissue perivascular edema is associated with altered gait patterns in patients with knee osteoarthritis, Osteoarthritis and Cartilage. 2022; 30(1): 42-51[4]Tan AL, Tanner SF, Conaghan PG, et al.: Role of metacarpophalangeal joint anatomic factors in the distribution of synovitis and bone erosion in early rheumatoid arthritis. Arthritis Rheum. 2003; 48:1214–22[5]Zhang X.-P: Addition of Fibroblast-Stromal Cell Markers to Immune Synovium Pathotypes Better Predicts Radiographic Progression at 1 Year in Active Rheumatoid Arthritis, Frontiers in Immunology 2021; 12: 778480[6]Krenn V, Morawietz L, Burmester G-R, et al.: Synovitis score: discrimination between chronic low-grade and high-grade synovitis. Histopathology 2006; 49:358–364[7]Andersen M, Ellegaard K, Hebsgaard JB, et al.: Ultrasound colour Doppler is associated with synovial pathology in biopsies from hand joints in rheumatoid arthritis patients: a cross-sectional study. Ann. Rheum. Dis. 2014; 73:678–683AcknowledgementsThe authors would like to thank the study participants as well as Inger Wätjen, Eva Littrup Andersen, Mette Okkels, Jette Møller Frøsig and Suzi Høeg Madsen for technical assistance. I have no acknowledgements to declare.Disclosure of InterestsKatrine Skovsgaard Itenov: None declared, Niels Søe: None declared, Else Marie Bartels: None declared, Henning Bliddal: None declared, Martin Andersen Grant/research support from: The primary study was supported by unrestricted grants from Novo Nordisk, Employee of: Was employed at Novo Nordisk A/S during the conduction of the study.
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Kristensen M, Sørensen B, Alsner J, Hansen C, Zukauskaite R, Hinsby E, Maare C, Johansen J, Primdahl H, Christensen C, Andersen M, Lilja-Fischer J, Tramm T, Overgaard J, Eriksen J. OC-0435 Loco-regional failure is associated with the stem cell marker SLC3A2, volume and HPV/p16 in HNSCC. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02571-3] [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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Nielsen S, Lyhne N, Andersen M, Johansen J, Godballe C, Primdahl H, Kjærgaard T, Overgaard J. OC-0434 Unknown Primary Head and Neck SCC: a phase-4 population-based cohort study from DAHANCA. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02570-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Grånäs E, Schröder UA, Arman MA, Andersen M, Gerber T, Schulte K, Andersen JN, Michely T, Hammer B, Knudsen J. Water Chemistry beneath Graphene: Condensation of a Dense OH-H 2O Phase under Graphene. J Phys Chem C Nanomater Interfaces 2022; 126:4347-4354. [PMID: 35299819 PMCID: PMC8919254 DOI: 10.1021/acs.jpcc.1c10289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/12/2022] [Indexed: 06/14/2023]
Abstract
Room temperature oxygen hydrogenation below graphene flakes supported by Ir(111) is investigated through a combination of X-ray photoelectron spectroscopy, scanning tunneling microscopy, and density functional theory calculations using an evolutionary search algorithm. We demonstrate how the graphene cover and its doping level can be used to trap and characterize dense mixed O-OH-H2O phases that otherwise would not exist. Our study of these graphene-stabilized phases and their response to oxygen or hydrogen exposure reveals that additional oxygen can be dissolved into them at room temperature creating mixed O-OH-H2O phases with an increased areal coverage underneath graphene. In contrast, additional hydrogen exposure converts the mixed O-OH-H2O phases back to pure OH-H2O with a reduced areal coverage underneath graphene.
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Affiliation(s)
- Elin Grånäs
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
- Deutsches
Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
| | | | - Mohammad A. Arman
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Mie Andersen
- Aarhus
Institute of Advanced Studies, Aarhus University, Aarhus C, DK-8000 Denmark
- Department
of Physics and Astronomy - Center for Interstellar Catalysis, Aarhus University, Aarhus C, DK-8000 Denmark
| | - Timm Gerber
- II.
Physikalisches Institut, Universität
zu Köln, 50937 Köln, Germany
| | - Karina Schulte
- MAX
IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
| | - Jesper N. Andersen
- MAX
IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Thomas Michely
- II.
Physikalisches Institut, Universität
zu Köln, 50937 Köln, Germany
| | - Bjørk Hammer
- Aarhus
Institute of Advanced Studies, Aarhus University, Aarhus C, DK-8000 Denmark
- Department
of Physics and Astronomy - Center for Interstellar Catalysis, Aarhus University, Aarhus C, DK-8000 Denmark
| | - Jan Knudsen
- MAX
IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
- Division
of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
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23
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Hansen C, Friborg J, Skyt P, Smulders B, Sibolt P, Nielsen M, Samsøe E, Petersen J, Johansen J, Zukauskaite R, Andersen E, Andersen M, Farhadi M, Eriksen J, Overgaard J, Grau C, Jensen K. Photon-proton dose plan comparison in the pilot phase of the randomized clinical DAHANCA 35 trial. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00106-5] [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: 11/25/2022] Open
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24
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Sabaté M, Vidal X, Ballarin E, Rottenkolber M, Schmiedl S, Grave B, Huerta C, Martin-Merino E, Montero D, Leon-Muñoz LM, Gasse C, Moore N, Droz C, Lassalle R, Aakjær M, Andersen M, De Bruin ML, Souverein P, Klungel OH, Gardarsdottir H, Ibáñez L. Adherence to Direct Oral Anticoagulants in Patients With Non-Valvular Atrial Fibrillation: A Cross-National Comparison in Six European Countries (2008-2015). Front Pharmacol 2021; 12:682890. [PMID: 34803665 PMCID: PMC8596153 DOI: 10.3389/fphar.2021.682890] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/03/2021] [Indexed: 11/13/2022] Open
Abstract
Aims: To describe and compare the adherence to different direct oral anticoagulants (DOACs) in eight European databases representing six countries. Methods: Longitudinal drug utilization study of new users (≥18 years) of DOACs (dabigatran, rivaroxaban, apixaban) with a diagnosis of non-valvular atrial fibrillation (2008-2015). Adherence was examined by estimating persistence, switching, and discontinuation rates at 12 months. Primary non-adherence was estimated in BIFAP and SIDIAP databases. Results: The highest persistence rate was seen for apixaban in the CPRD database (81%) and the lowest for dabigatran in the Mondriaan database (22%). The switching rate for all DOACs ranged from 2.4 to 13.1% (Mondriaan and EGB databases, respectively). Dabigatran had the highest switching rate from 5.0 to 20.0% (Mondriaan and EGB databases, respectively). The discontinuation rate for all DOACs ranged from 16.0 to 63.9% (CPRD and Bavarian CD databases, respectively). Dabigatran had the highest rate of discontinuers, except in the Bavarian CD and AOK NORDWEST databases, ranging from 23.2 to 64.6% (CPRD and Mondriaan databases, respectively). Combined primary non-adherence for examined DOACs was 11.1% in BIFAP and 14.0% in SIDIAP. There were differences in population coverage and in the type of drug data source among the databases. Conclusion: Despite the differences in the characteristics of the databases and in demographic and baseline characteristics of the included population that could explain some of the observed discrepancies, we can observe a similar pattern throughout the databases. Apixaban was the DOAC with the highest persistence. Dabigatran had the highest proportion of discontinuers and switchers at 12 months in most databases (EMA/2015/27/PH).
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Affiliation(s)
- M Sabaté
- Fundació Institut Català de Farmacologia (FICF), Barcelona, Spain.,Department of Clinical Pharmacology, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Department of Pharmacology, Toxicology and Therapeutics, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - X Vidal
- Fundació Institut Català de Farmacologia (FICF), Barcelona, Spain.,Department of Clinical Pharmacology, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Department of Pharmacology, Toxicology and Therapeutics, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - E Ballarin
- Fundació Institut Català de Farmacologia (FICF), Barcelona, Spain.,Department of Clinical Pharmacology, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - M Rottenkolber
- Diabetes Research Group, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - S Schmiedl
- Department of Clinical Pharmacology, School of Medicine, Faculty of Health, Witten/Herdecke University, Witten, Germany.,Philipp Klee-Institute for Clinical Pharmacology, Helios University Hospital Wuppertal, Wuppertal, Germany
| | - B Grave
- AOK NORDWEST, Dortmund, Germany
| | - C Huerta
- Pharmacoepidemiology and Pharmacovigilance Division, Spanish Agency of Medicines and Medical Devices (AEMPS), Madrid, Spain
| | - E Martin-Merino
- Pharmacoepidemiology and Pharmacovigilance Division, Spanish Agency of Medicines and Medical Devices (AEMPS), Madrid, Spain
| | - D Montero
- Pharmacoepidemiology and Pharmacovigilance Division, Spanish Agency of Medicines and Medical Devices (AEMPS), Madrid, Spain
| | - L M Leon-Muñoz
- Pharmacoepidemiology and Pharmacovigilance Division, Spanish Agency of Medicines and Medical Devices (AEMPS), Madrid, Spain
| | - C Gasse
- Aarhus University, Aarhus, Denmark
| | - N Moore
- Bordeaux PharmacoEpi, INSERM CIC1401, Université de Bordeaux, CHU de Bordeaux, Bordeaux, France
| | - C Droz
- Bordeaux PharmacoEpi, INSERM CIC1401, Université de Bordeaux, CHU de Bordeaux, Bordeaux, France
| | - R Lassalle
- Bordeaux PharmacoEpi, INSERM CIC1401, Université de Bordeaux, CHU de Bordeaux, Bordeaux, France
| | - M Aakjær
- Pharmacovigilance Research Centre, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M Andersen
- Pharmacovigilance Research Centre, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M L De Bruin
- Copenhagen Centre for Regulatory Science (CORS), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - P Souverein
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Universiteit Utrecht, David de Wiedgebouw, Utrecht, Netherlands
| | - O H Klungel
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Universiteit Utrecht, David de Wiedgebouw, Utrecht, Netherlands.,Julius Center, University Medical Center Utrecht, Utrecht, Netherlands
| | - H Gardarsdottir
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Universiteit Utrecht, David de Wiedgebouw, Utrecht, Netherlands.,Department of Clinical Pharmacy, University Medical Center Utrecht, Utrecht, Netherlands.,Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland
| | - L Ibáñez
- Fundació Institut Català de Farmacologia (FICF), Barcelona, Spain.,Department of Clinical Pharmacology, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Department of Pharmacology, Toxicology and Therapeutics, Universitat Autònoma de Barcelona, Barcelona, Spain
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25
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Lassen P, Huang S, Su J, O’Sullivan B, Waldron J, Andersen M, Primdahl H, Johansen J, Andrup Kristensen C, Andersen E, Eriksen J, Rønn Hansen C, Alsner J, Lilja-Fisher J, Bratman S, Ringash J, Kim J, Hope A, Spreafico A, de Almeida J, Xu W, Overgaard J. PH-0051 Outcomes after definitive (C)RT in HPV+ OPC: Largescale comparison of two population-based cohorts. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07233-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Jankowski M, Saedi M, La Porta F, Manikas AC, Tsakonas C, Cingolani JS, Andersen M, de Voogd M, van Baarle GJC, Reuter K, Galiotis C, Renaud G, Konovalov OV, Groot IMN. Correction to Real-Time Multiscale Monitoring and Tailoring of Graphene Growth on Liquid Copper. ACS Nano 2021; 15:12455. [PMID: 34240597 PMCID: PMC11027589 DOI: 10.1021/acsnano.1c05447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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27
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Jankowski M, Saedi M, La Porta F, Manikas AC, Tsakonas C, Cingolani JS, Andersen M, de Voogd M, van Baarle GJC, Reuter K, Galiotis C, Renaud G, Konovalov OV, Groot IMN. Real-Time Multiscale Monitoring and Tailoring of Graphene Growth on Liquid Copper. ACS Nano 2021; 15:9638-9648. [PMID: 34060320 PMCID: PMC8291761 DOI: 10.1021/acsnano.0c10377] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 05/27/2021] [Indexed: 05/25/2023]
Abstract
The synthesis of large, defect-free two-dimensional materials (2DMs) such as graphene is a major challenge toward industrial applications. Chemical vapor deposition (CVD) on liquid metal catalysts (LMCats) is a recently developed process for the fast synthesis of high-quality single crystals of 2DMs. However, up to now, the lack of in situ techniques enabling direct feedback on the growth has limited our understanding of the process dynamics and primarily led to empirical growth recipes. Thus, an in situ multiscale monitoring of the 2DMs structure, coupled with a real-time control of the growth parameters, is necessary for efficient synthesis. Here we report real-time monitoring of graphene growth on liquid copper (at 1370 K under atmospheric pressure CVD conditions) via four complementary in situ methods: synchrotron X-ray diffraction and reflectivity, Raman spectroscopy, and radiation-mode optical microscopy. This has allowed us to control graphene growth parameters such as shape, dispersion, and the hexagonal supra-organization with very high accuracy. Furthermore, the switch from continuous polycrystalline film to the growth of millimeter-sized defect-free single crystals could also be accomplished. The presented results have far-reaching consequences for studying and tailoring 2D material formation processes on LMCats under CVD growth conditions. Finally, the experimental observations are supported by multiscale modeling that has thrown light into the underlying mechanisms of graphene growth.
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Affiliation(s)
- Maciej Jankowski
- Université
Grenoble Alpes, CEA, IRIG/MEM/NRS, 38000 Grenoble, France
- ESRF-The
European Synchrotron, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Mehdi Saedi
- Leiden
Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Francesco La Porta
- ESRF-The
European Synchrotron, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Anastasios C. Manikas
- FORTH/ICE-HT
and Department of Chemical Engineering, University of Patras, Patras 26504, Greece
| | - Christos Tsakonas
- FORTH/ICE-HT
and Department of Chemical Engineering, University of Patras, Patras 26504, Greece
| | - Juan S. Cingolani
- Chair
for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Mie Andersen
- Chair
for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Marc de Voogd
- Leiden Probe
Microscopy (LPM), Kenauweg
21, 2331 BA Leiden, The Netherlands
| | | | - Karsten Reuter
- Chair
for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Costas Galiotis
- FORTH/ICE-HT
and Department of Chemical Engineering, University of Patras, Patras 26504, Greece
| | - Gilles Renaud
- Université
Grenoble Alpes, CEA, IRIG/MEM/NRS, 38000 Grenoble, France
| | - Oleg V. Konovalov
- ESRF-The
European Synchrotron, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Irene M. N. Groot
- Leiden
Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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28
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Abstract
Heterogeneous catalysts are rather complex materials that come in many classes (e.g., metals, oxides, carbides) and shapes. At the same time, the interaction of the catalyst surface with even a relatively simple gas-phase environment such as syngas (CO and H2) may already produce a wide variety of reaction intermediates ranging from atoms to complex molecules. The starting point for creating predictive maps of, e.g., surface coverages or chemical activities of potential catalyst materials is the reliable prediction of adsorption enthalpies of all of these intermediates. For simple systems, direct density functional theory (DFT) calculations are currently the method of choice. However, a wider exploration of complex materials and reaction networks generally requires enthalpy predictions at lower computational cost.The use of machine learning (ML) and related techniques to make accurate and low-cost predictions of quantum-mechanical calculations has gained increasing attention lately. The employed approaches span from physically motivated models over hybrid physics-ΔML approaches to complete black-box methods such as deep neural networks. In recent works we have explored the possibilities for using a compressed sensing method (Sure Independence Screening and Sparsifying Operator, SISSO) to identify sparse (low-dimensional) descriptors for the prediction of adsorption enthalpies at various active-site motifs of metals and oxides. We start from a set of physically motivated primary features such as atomic acid/base properties, coordination numbers, or band moments and let the data and the compressed sensing method find the best algebraic combination of these features. Here we take this work as a starting point to categorize and compare recent ML-based approaches with a particular focus on model sparsity, data efficiency, and the level of physical insight that one can obtain from the model.Looking ahead, while many works to date have focused only on the mere prediction of databases of, e.g., adsorption enthalpies, there is also an emerging interest in our field to start using ML predictions to answer fundamental science questions about the functioning of heterogeneous catalysts or perhaps even to design better catalysts than we know today. This task is significantly simplified in works that make use of scaling-relation-based models (volcano curves), where the model outcome is determined by only one or two adsorption enthalpies and which consequently become the sole target for ML-based high-throughput screening or design. However, the availability of cheap ML energetics also allows going beyond scaling relations. On the basis of our own work in this direction, we will discuss the additional physical insight that can be achieved by integrating ML-based predictions with traditional catalysis modeling techniques from thermal and electrocatalysis, such as the computational hydrogen electrode and microkinetic modeling, as well as the challenges that lie ahead.
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Affiliation(s)
- Mie Andersen
- Aarhus Institute of Advanced Studies, Aarhus University, DK-8000 Aarhus C, Denmark
- Department of Physics and Astronomy - Center for Interstellar Catalysis, Aarhus University, DK-8000 Aarhus C, Denmark
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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29
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Affiliation(s)
- Wenbin Xu
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Mie Andersen
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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30
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Deimel M, Reuter K, Andersen M. Active Site Representation in First-Principles Microkinetic Models: Data-Enhanced Computational Screening for Improved Methanation Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04045] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Deimel
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Mie Andersen
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
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31
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Jensen K, Vogelius I, Andersen M, Overgaard J, Eriksen J, Farhadi M, Andersen E, Johansen J, Friborg J. PO-0798: Early mortality after radical radiotherapy in head and neck cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00815-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Kaplan L, Hansen C, Jensen K, Friborg J, Samsøe E, Johansen J, Andersen M, Smulders B, Andersen E, Nielsen M, Eriksen J, Petersen J, Elstrøm U, Holm A, Skyt P, Vestergaard A, Lorenzen E, Nielsen M, Marseguerra R, Morthorst M, Grau C, Korreman S. OC-0107: Quantitative metrics to analyze variations and support best practices in head and neck dose plans. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00133-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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33
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Hansen C, Van den Bosch L, Van der Laan H, Friborg J, Jensen K, Samsøe E, Johnsen L, Zukauskaite R, Grau C, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen C, Andersen M, Eriksen J, Langendijk J, Overgaard J, Van der Schaaf A. OC-0575: Type 4 validation of dysphagia NTCP model for selection of HNC patients to the RCT, DAHANCA35. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Goldeman C, Andersen M, Al-Robai A, Buchholtz T, Svane N, Ozgür B, Holst B, Shusta E, Hall VJ, Saaby L, Hyttel P, Brodin B. Human induced pluripotent stem cells (BIONi010-C) generate tight cell monolayers with blood-brain barrier traits and functional expression of large neutral amino acid transporter 1 (SLC7A5). Eur J Pharm Sci 2020; 156:105577. [PMID: 33011235 DOI: 10.1016/j.ejps.2020.105577] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/02/2020] [Accepted: 09/22/2020] [Indexed: 12/25/2022]
Abstract
The barrier properties of the brain capillary endothelium, the blood-brain barrier (BBB) restricts uptake of most small and all large molecule drug compounds to the CNS. There is a need for predictive human in vitro models of the BBB to enable studies of brain drug delivery. Here, we investigated whether human induced pluripotent stem cell (hiPSC) line (BIONi010-C) could be differentiated to brain capillary endothelial- like cells (BCEC) and evaluated their potential use in drug delivery studies. BIONi010-C hIPSCs were differentiated according to established protocols. BCEC monolayers displayed transendothelial electrical resistance (TEER) values of 5,829±354 Ω∙cm2, a Papp,mannitol of 1.09±0.15 ∙ 10-6 cm∙s-1 and a Papp,diazepam of 85.7 ± 5.9 ∙ 10-6 cm ∙s-1. The Pdiazepam/Pmannitol ratio of ~80, indicated a large dynamic passive permeability range. Monolayers maintained their integrity after medium exchange. Claudin-5, Occludin, Zonulae Occludens 1 and VE-Cadherin were expressed at the cell-cell contact zones. Efflux transporters were present at the mRNA level, but functional efflux of substrates was not detected. Transferrin-receptor (TFR), Low density lipoprotein receptor-related protein 1 (LRP1) and Basigin receptors were expressed at the mRNA-level. The presence and localization of TFR and LRP1 were verified at the protein level. A wide range of BBB-expressed solute carriers (SLC's) were detected at the mRNA level. The presence and localization of SLC transporters GLUT1 and LAT1 was verified at the protein level. Functional studies revealed transport of the LAT1 substrate [3H]-L-Leucine and the LRP1 substrate angiopep-2. In conclusion, we have demonstrated that BIONi010-C-derived BCEC monolayers exhibited, BBB properties including barrier tightness and integrity, a high dynamic range, expression of some of the BBB receptor and transporter expression, as well as functional transport of LAT1 and LRP1 substrates. This suggests that BIONi010-C-derived BCEC monolayers may be useful for studying the roles of LAT-1 and LRP1 in brain drug delivery.
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Affiliation(s)
- C Goldeman
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M Andersen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A Al-Robai
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - T Buchholtz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - N Svane
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B Ozgür
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B Holst
- Bioneer A/S, Hørsholm, Denmark
| | - E Shusta
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - V J Hall
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - L Saaby
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Bioneer A/S, Hørsholm, Denmark
| | - P Hyttel
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B Brodin
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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35
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Auer A, Andersen M, Wernig EM, Hörmann NG, Buller N, Reuter K, Kunze-Liebhäuser J. Self-activation of copper electrodes during CO electro-oxidation in alkaline electrolyte. Nat Catal 2020. [DOI: 10.1038/s41929-020-00505-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Cingolani JS, Deimel M, Köcher S, Scheurer C, Reuter K, Andersen M. Interface between graphene and liquid Cu from molecular dynamics simulations. J Chem Phys 2020; 153:074702. [PMID: 32828114 DOI: 10.1063/5.0020126] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Controllable synthesis of defect-free graphene is crucial for applications since the properties of graphene are highly sensitive to any deviations from the crystalline lattice. We focus here on the emerging use of liquid Cu catalysts, which have high potential for fast and efficient industrial-scale production of high-quality graphene. The interface between graphene and liquid Cu is studied using force field and ab initio molecular dynamics, revealing a complete or partial embedding of finite-sized flakes. By analyzing flakes of different sizes, we find that the size-dependence of the embedding can be rationalized based on the energy cost of embedding vs bending the graphene flake. The embedding itself is driven by the formation of covalent bonds between the under-coordinated edge C atoms and the liquid Cu surface, which is accompanied by a significant charge transfer. In contrast, the central flake atoms are located around or slightly above 3 Å from the liquid Cu surface and exhibit weak van der Waals-bonding and much lower charge transfer. The structural and electronic properties of the embedded state revealed in our work provide the atomic-scale information needed to develop effective models to explain the special growth observed in experiments where various interesting phenomena such as flake self-assembly and rotational alignment, high growth speeds, and low defect densities in the final graphene product have been observed.
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Affiliation(s)
- Juan Santiago Cingolani
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Martin Deimel
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Simone Köcher
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Christoph Scheurer
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Mie Andersen
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
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37
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Jensen KH, Vogelius I, Kristensen CA, Andersen E, Overgaard J, Eriksen JG, Primdahl H, Johansen J, Farhadi M, Andersen M, Friborg J. Early Mortality after Radical Radiotherapy in Head and Neck Cancer - A Nationwide Analysis from the Danish Head and Neck Cancer Group (DAHANCA) Database. Clin Oncol (R Coll Radiol) 2020; 33:57-63. [PMID: 32698963 DOI: 10.1016/j.clon.2020.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/08/2020] [Accepted: 07/02/2020] [Indexed: 12/18/2022]
Abstract
AIMS Curative-intent radiotherapy (RT) or chemoradiation (CRT) of squamous cell carcinoma of the head and neck (HNSCC) produces high survival rates, but is associated with substantial toxicity. However, there are no commonly accepted quality metrics for early mortality in radiation oncology. To assess the applicability of early mortality as a clinical quality indicator, this study investigated the temporal distribution, risk factors and trends of 90- and 180-day overall and non-cancer mortality in a nationwide cohort of HNSCC patients treated with RT/CRT. MATERIALS AND METHODS Information on all HNSCC patients treated with curative-intent RT/CRT in Denmark between 2000 and 2017 was obtained from the national Danish Head and Neck Cancer Group clinical database. Deaths in patients with residual or recurrent disease after RT/CRT were classified as cancer-related. Possible risk factors were investigated using logistic regression analysis. RESULTS Data from 11 419 patients were extracted. In total, 90- and 180-day mortality risks were 3.1% and 7.1%, respectively. There was a uniform temporal distribution of 180-day mortality. In multivariable analysis, increasing age, stage, performance status, earlier treatment year and hypopharyngeal cancer were significantly associated with an increased risk (P < 0.05). Risk factor estimates were comparable for 90- versus 180-day mortality as well as for overall versus non-cancer mortality. Between 2000 and 2017 there was a significant decrease in 180-day mortality, which was driven by a reduction in cancer-related events. CONCLUSION The distribution of 180-day overall and non-cancer mortality did not indicate a well-defined early high-risk period. Moreover, risk factor estimates were highly similar across risk periods and groups. Taken together, our findings question the applicability of early mortality as a standard metric for treatment-associated toxicity.
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Affiliation(s)
- K H Jensen
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
| | - I Vogelius
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - C A Kristensen
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - E Andersen
- Department of Oncology, Herlev Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - J Overgaard
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - J G Eriksen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - H Primdahl
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - J Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - M Farhadi
- Department of Oncology, Zealand University Hospital, Zealand, Denmark
| | - M Andersen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - J Friborg
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
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Glintborg B, Hendricks O, Colic A, Lindegaard HM, Ahmed R, Loft AG, Kollerup G, Andersen M, Grydehøj J, Raun J, Thorgrimsen T, Mortensen K, Uhrenholt L, Jensen D, Ruge I, Kalisz M, Danebod K, Lomborg N, Steen Krogh N, Hetland ML. SAT0130 TREAT-TO-TARGET STRATEGY OF >8.000 PATIENTS WITH EARLY RHEUMATOID ARTHRITIS: DOES SMOKING AFFECT ACHIEVEMENT OF REMISSION ON METHOTREXATE AND TIME TO START OF FIRST BIOLOGIC? RESULTS FROM THE NATIONWIDE DANISH DANBIO REGISTRY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Smoking is a known risk factor for rheumatoid arthritis (RA). It is largely unknown whether smoking has any impact on disease activity and treatment outcomes (e.g. achieving remission on methotrexate and time to first biological disease modifying anti-rheumatic treatments (bDMARD)) in early RA with a modern treat-to-target strategy.Objectives:To explore if smoking was associated with treatment outcomes in newly diagnosed patients with RA starting first conventional synthetic (cs)DMARDs in routine care.Methods:Observational cohort study. Adult patients with RA starting first csDMARD during year 2010-2018 were identified in the Danish nationwide quality registry, DANBIO. Smoking status (current/never/previous) upon start of csDMARD (=baseline), disease activity, 1-year treatment outcomes and bDMARD treatment were retrieved from DANBIO. Data were censored Oct 2019.Impact of smoking status was explored for the following outcomes: 1) median baseline disease activity baseline, 2) remission at 1-year (logistic regression analyses), 3) time to first bDMARD (Cox-regression analyses). Regression analyses were adjusted for gender and age.Results:Among 9515 patients, 8647 (91%) had available smoking status (Current 23%/never 50%/previous 27%) and were included. Baseline disease activity was independent of smoking status (Table 1). First line csDMARD was methotrexate in 91% of patients. Compared to never smokers, the current smokers were more often men, younger and sero-positive for IgM-RF and anti-CCP.Table 1.Patient characteristics and disease activity at baseline and 1 year stratified by smoking status. Numbers are medians (IQR) unless otherwise stated.Smoking statusCurrentNeverPreviousBaselinePatient numbers, N200743082332Age, yrs58 (49-66)61 (48-71)62 (52-70)Female, %627163IgM-RF positive, %715465Anti-CCP positive, %715365DAS284.4 (3.4-5.3)4.4 (3.4-5.3)4.3 (3.3-5.3)CDAI18.7 (11.7-27.3)18.4 (10.9-27.4)18.5 (10.4-27.6)VAS patient global, mm60 (35-81)55 (30-77)55 (31-78)1 yearPatient number, N179338372053DAS282.6 (1.9-3.7)2.3 (1.7-3.4)2.5 (1.8-3.4)CDAI6.4 (2.8-12.5)4.9 (1.8-10.3)5.4 (2-10.8)DAS28-remission, %495753CDAI-remission, %273533VAS patient global, mm37 (14-67)29 (10-57)30 (11-58)DAS28-response: DAS28(CRP)≤2.6; CDAI-remission: CDAI≤2.8Never and previous smokers had higher odds of remission at 1 year’s follow-up compared to current smokers. In adjusted Cox regression analyses, baseline smoking was associated with shorter time to start of first bDMARD (Table 2).Table 2.Impact of baseline smoking status on treatment outcomesComparisonOdds Ratio (95% CI)pDAS28-remission 1 yr, yes vs. no*Never vs. current smoker1.43 (1.27;1.62)<0.001Previous vs. current1.14 (0.99;1.30)0.07CDAI remission 1 yr, yes vs. no*Never vs. current1.53 (1.34;1.75)<0.001Previous vs. current1.29 (1.11;1.50)<0.001ComparisonHazard Ratio (95% CI)pStart of bDMARD duringfollow-up**Never vs current smoker0.85 (0.76;0.96)0.006Previous vs. current1.05 (0.93;1.19)0.4*Logistic regression analyses (adjusted for gender and age)** Cox regression analyses (adjusted for gender and age)Conclusion:In this observational study of >8000 patients with RA starting a first csDMARD, current smoking was associated with lower odds of achieving remission on methotrexate and higher chance of having started bMDARD compared to never smokers. Seropositivity may be an intermediate variable. Further analyses are planned to study impact of comorbidities and other confounding factors.Acknowledgments :Thank you to all patients and departments who contribute to the DANBIO registryDisclosure of Interests: :Bente Glintborg Grant/research support from: Grants from Pfizer, Biogen and Abbvie, Oliver Hendricks Grant/research support from: Pfizer, MSD, Ada Colic Consultant of: Advisory board Sanofi, Hanne Merete Lindegaard: None declared, Rabiah Ahmed: None declared, Anne Gitte Loft Grant/research support from: Novartis, Consultant of: AbbVie, MSD, Novartis, Pfizer and UCB, Speakers bureau: AbbVie, MSD, Novartis, Pfizer and UCB, Gina Kollerup Speakers bureau: Eli Lilly, Marlene Andersen: None declared, Jolanta Grydehøj: None declared, Johnny Raun: None declared, Toke Thorgrimsen: None declared, Kasper Mortensen: None declared, Line Uhrenholt Speakers bureau: Abbvie, Eli Lilly and Novartis (not related to the submitted work), Dorte Jensen: None declared, Iben Ruge Grant/research support from: Novo Nordisk Foundation, Maren Kalisz: None declared, Kamilla Danebod: None declared, Niels Lomborg: None declared, Niels Steen Krogh: None declared, Merete L. Hetland Grant/research support from: BMS, MSD, AbbVie, Roche, Novartis, Biogen and Pfizer, Consultant of: Eli Lilly, Speakers bureau: Orion Pharma, Biogen, Pfizer, CellTrion, Merck and Samsung Bioepis
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Fernandes GL, Araujo P, Tufik S, Andersen M. 0270 Somnolence Profiles in Mice Submitted to Acute and Chronic Sleep Deprivation. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Sleepiness is a behavioral marker of homeostatic sleep regulation and is related to several negative outcomes with interindividual variation, which may amount to central sleep mechanisms. However, there is a lack of evidence linking progressive sleep need and sleepiness with factors of individual variability, which could be tested by acute and chronic sleep deprivation. Thus, the study objective was to investigate the development of sleepiness in sleep deprived mice.
Methods
C57BL/6J male mice (n=340) were distributed in 5 sleep deprivation groups, 5 sleep rebound groups and 10 control groups. Animals underwent acute total sleep deprivation for 3, 6, 9 or 12 hours or chronic sleep deprivation for 6 hours for 5 consecutive days. Sleep rebound groups had the opportunity to sleep for 1, 2, 3, 4 hours after acute sleep deprivation or 24 hours after chronic sleep deprivation. During the protocol, sleep attempts were counted as a sleepiness index. After euthanasia, blood was collected for corticosterone assessment.
Results
Using the average group sleep attempts, it was possible to differentiate between sleepy (mean>group average) and resistant to sleepiness animals (mean<group average). Frequency of resistant mice was 65%, 56%, 56% and 53% for 3, 6, 9 and 12 hours of acute sleep deprivation, respectively, and 74% in chronic sleep deprivation. 52% of the sleepiness variance might be explained by individual variation during chronic sleep deprivation and 68% of sleepiness variance during acute sleep deprivation was attributed to extended wakefulness. A normal corticosterone zenith was observed at the start of the dark phase, independent of sleep deprivation.
Conclusion
Different degrees of sleepiness in sleep deprived mice were verified. Sleep deprivation per se was the main factor explaining sleepiness during acute sleep deprivation whereas in chronic deprivation individual variation was more relevant.
Support
This work was financially supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (#2017/18455-5), Coordenação de Aperfeiçoamento de Pessoal Nível Superior (CAPES) - grant code 001, ConselhoNacional de Desenvolvimento Científico e Tecnológico (CNPq) (#169040/2017–8)and Associação Fundo de Incentivo à Pesquisa (AFIP).
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Affiliation(s)
- G L Fernandes
- Universidade Federal de Sao Paulo, São Paulo, BRAZIL
| | - P Araujo
- Escola de Ciências Médicas da Santa Casa de São Paulo, Sao Paulo, BRAZIL
| | - S Tufik
- Universidade Federal de Sao Paulo, São Paulo, BRAZIL
| | - M Andersen
- Universidade Federal de Sao Paulo, São Paulo, BRAZIL
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Lucchesi LM, Tempaku PF, Smith AA, Togeiro S, Hachul H, Andersen M, Tufik S, Poyares D. 1126 Relationship Between Headache and Sleep: A Longitudinal Study from the Population of Sao Paulo City (Brazil). Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1120] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
The complaint of nocturnal awakening with headache (NAH), was prevalent (8.4%) in the São Paulo population and was associated with sleep disturbances, as demonstrated in a study conducted in 2007 (EPISONO). Indeed, this relationship between sleep and headache is well documented in the literature. Objective: To assess the incidence and evolution of NAH and to associate sleep-related variables in an eight-year prospective study.
Methods
From 1042 volunteers enrolled in the baseline, 712 agreed to participate in the follow-up. Questionnaires and scales were applied and polysomnography and actigraphy performed. The complaint of NAH was analyzed according to a frequency questionnaire and separated into frequent or occasional.
Results
At follow-up, 110 volunteers reported NAH, of which 82 were the same as those from the baseline, but only 38 had frequent complaints. Comparing with volunteers whose headache has become occasional, we have as a difference the insomnia severity index which is significantly higher in the group with frequent NAH (8.40 ± 5.10 vs 11.20±6.40 p:0.03) and worse sleep quality as measured by the Pittsburgh questionnaire (7.25±3.60 vs 10.25±4.60 p:0.002). In addition, these volunteers had higher anxiety (10.40±9.30 vs 12.00± 10:00 p: 0.008) and depression (10.60±9.90 vs 12:00±9.90 p:0.005) from Beck’s questionnaires and greater fatigue (4.85±3.10 vs 9.75±5.55 p:0.001). The associations of NAH with insomnia, nightmares, and bruxism observed in the baseline continued, but no difference was observed between those who had frequent or occasional complaints at follow-up.
Conclusion
Our study showed that NAH was highly prevalent in the Sao Paulo population in both the baseline and follow-up studies, but this frequency had a reduction in follow-up. Volunteers who persisted with the frequent complaint showed greater severity of insomnia, higher anxiety and depression and greater fatigue.
Support
Associação Fundo de Incentivo à Pesquisa (AFIP) and São Paulo Research Foundation (FAPESP)
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Affiliation(s)
- L M Lucchesi
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - P F Tempaku
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - A A Smith
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - S Togeiro
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - H Hachul
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - M Andersen
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - S Tufik
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
| | - D Poyares
- Universidade Federal de Sao Paulo, Sao Paulo, BRAZIL
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Vacquié-Garcia J, Lydersen C, Marques TA, Andersen M, Kovacs KM. First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The Svalbard Archipelago (Norway) is experiencing rapid declines in the seasonal duration and extent of sea-ice cover, and local tidewater glaciers are melting. These environmental changes represent a threat to ice-associated species in the region, including white whales Delphinapterus leucas. However, no estimates of stock size or trends are available for this stock. An aerial survey was conducted during the summer of 2018, covering the coastlines of all major islands in Svalbard, as well fjords and open ocean areas. A total count was attempted for the coastlines, while coverage of the fjords and open ocean areas was designed as distance-sampling line transects. In total, 265 white whales were detected in 22 groups along the 4965 km of coastline coverage. No whales were observed on fjord (1481 km) or open ocean transects (535 km). After correcting for surface availability using behavioural data from the same area (in summer) and making adjustments for small areas not flown during the survey, the stock size was estimated to be 549 individuals (95% CI: 436%%CONV_ERR%%723). This estimate is surprisingly low given that this species is one of the most frequently observed cetaceans in the area, but it confirms suspicions based on difficulties in finding animals when operating white whale tagging programmes over the past decade. This first population estimate is important in the context of the rapid environmental change taking place in the Arctic and for providing a baseline for comparison with future estimates.
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Affiliation(s)
| | - C Lydersen
- Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway
| | - TA Marques
- Centre for Research into Ecological & Environmental Modelling (Scottish Oceans Institute), Buchanan Gardens, St Andrews, KY16 9LY, UK
- Departamento de Biologia Animal, Centro de Estatística e Aplicações da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - M Andersen
- Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway
| | - KM Kovacs
- Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway
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Ramoju S, Andersen M, Poddalgoda D, Nong A, Karyakina N, Shilnikova N, Krishnan K, Krewski D. Derivation of whole blood biomonitoring equivalents for lithium for the interpretation of biomonitoring data. Regul Toxicol Pharmacol 2020; 111:104581. [PMID: 31935483 DOI: 10.1016/j.yrtph.2020.104581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/28/2019] [Accepted: 01/10/2020] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Lithium salts have numerous industrial uses and are also used in the treatment of bipolar disorders. The main source of lithium exposure to the general population is drinking water and foods. Lithium is nephrotoxic at higher doses. Thus, oral exposure guidelines for lithium have been derived, including ICH's permitted daily exposure (PDE = 0.008 mg lithium/kg-bw/day) adopted by Health Canada and the United States Environmental Protection Agency's (U.S. EPA) provisional peer reviewed toxicity value (PPRTV = 0.002 mg lithium/kg-bw/day), both based on human data. OBJECTIVE To derive whole blood biomonitoring equivalents (BEs) associated with PDE and PPRTV to interpret population-level biomonitoring data in health risk context. METHOD A simple kinetic relationship based on plasma clearance value (0.5 L/kg-bw/day) and the oral absorption fraction (100%) was used to derive blood BEs for PDE and PPRTV. RESULTS This analysis resulted in BE values in plasma and whole blood of 16 and 10 μg/L, respectively, based on the PDE values developed by the Health Canada and of 4.2 and 2.7 μg/L, respectively, based on the PPRTV developed by U.S. EPA. CONCLUSION The derived BE values can be used to interpret population-level biomonitoring data.
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Affiliation(s)
- S Ramoju
- Risk Sciences International, Ottawa, ON, Canada.
| | - M Andersen
- Risk Sciences International, Ottawa, ON, Canada
| | | | - A Nong
- Health Canada, Ottawa, ON, Canada
| | - N Karyakina
- Risk Sciences International, Ottawa, ON, Canada; University of Ottawa, Ottawa, ON, Canada
| | - N Shilnikova
- Risk Sciences International, Ottawa, ON, Canada; University of Ottawa, Ottawa, ON, Canada
| | - K Krishnan
- Risk Sciences International, Ottawa, ON, Canada.
| | - D Krewski
- Risk Sciences International, Ottawa, ON, Canada; University of Ottawa, Ottawa, ON, Canada
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Morelhão PK, Pinto RZ, Gobbi C, Franco MR, Frange C, Damato T, Grande G, Christofaro D, Tufik S, Andersen M. Can sleep quality predict low back pain intensity over time? A longitudinal study with older adults. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.509] [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: 11/27/2022]
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Bezerra A, Andersen M, Pires G, Banzoli C, Polesel D, Tufik S, Hachul H. Progestagen-based contraceptives and subjective sleep reports in premenopausal women. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.101] [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: 11/25/2022]
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GODOY L, Palombini L, Andersen M, Poyares D, Tufik S. Inspiratory flow limitation in normal and uars patients in a general population sample. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.360] [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: 10/25/2022]
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Andersen M, Frederiksen HW, Ahmadi M, Kruse A, Nørredam M. Health assessment of newly arrived refugees to the Municipality of Copenhagen, Denmark. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Research data on the health status of newly arrived refugees is sparse. Newly arrived refugees and family reunified in The Municipality of Copenhagen has since 2016 been offered a general health assessment. These assessments are conducted by clinicians with expertise in refugee and migrant health from the Section of Immigrant Health. This study describes the sociodemographic characteristics and the burden of disease in this population.
Methods
In this cross-sectional study the population consists of adult patients examined January 2017 to February 2019. Clinicians performed the health assessment including a questionnaire regarding sociodemographics, medical history, symptoms, traumatic events during/before migration, a clinical examination and blood samples.
Results
The population had an equal presentation of males (N = 81) and females (N = 79) primarily from Syria (33%) and Iran (29%). The median age was 31,5 years (SD = 10,9). 67% had ≥8 years of schooling, while 11% had a maximum of 2 years. More than half had experienced war and 50% persecution. 76% suffered from Vitamin D deficiency, 31% of B12 deficiency and 12% of anemia. Few suffered from infectious and somatic diseases, yet many experiences symptoms such as pain (53%) and headaches (54%). 33% presented with symptoms of PTSD.
Conclusions
A high frequency of micronutrition deficiency was prevalent in the refugee group. Furthermore, many suffered from physical symptoms while very few had serious somatic issues. Numerous traumatic experiences were reported and 33% presented with symptoms of PTSD. The data is presumably a reflection of the healthy migrant bias.
Key messages
Despite refugees presumably being tested pre-entry and at holding level, they still suffer several health issues when granted asylum. Many newly arrived refugees suffer from micronutrition deficiency. These conditions are easily treated and could enhance the overall health of the individual.
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Affiliation(s)
- M Andersen
- Section of Immigrant Medicine, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark
| | - H Winther Frederiksen
- Section of Immigrant Medicine, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark
| | - M Ahmadi
- Section of Immigrant Medicine, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark
| | - A Kruse
- Section of Immigrant Medicine, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark
| | - M Nørredam
- Danish Research Centre for Migration, Ethnicity and Health, University of Copenhagen, Copenhagen, Denmark
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Hansen CR, Friborg J, Jensen K, Samsøe E, Johnsen L, Zukauskaite R, Grau C, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen CA, Andersen M, Eriksen JG, Overgaard J. NTCP model validation method for DAHANCA patient selection of protons versus photons in head and neck cancer radiotherapy. Acta Oncol 2019; 58:1410-1415. [PMID: 31432744 DOI: 10.1080/0284186x.2019.1654129] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Introduction: Prediction models using logistic regression may perform poorly in external patient cohorts. However, there is a need to standardize and validate models for clinical use. The purpose of this project was to describe a method for validation of external NTCP models used for patient selection in the randomized trial of protons versus photons in head and neck cancer radiotherapy, DAHANCA 35. Material and methods: Organs at risk of 588 patients treated primarily with IMRT in the randomized controlled DAHANCA19 trial were retrospectively contoured according to recent international recommendations. Dose metrics were extracted using MatLab and all clinical parameters were retrieved from the DAHANCA database. The model proposed by Christianen et al. to predict physician-rated dysphagia was validated through the closed testing, where change of the model intercept, slope and individual beta's were tested for significant prediction improvements. Results: Six months prevalence of dysphagia in the validation cohort was 33%. The closed testing procedure for physician-rated dysphagia showed that the Christianen et al. model needed an intercept refitting for the best match for the Danish patients. The intercept update increased the risk of dysphagia for the validation cohort by 7.9 ± 2.5% point. For the raw model performance, the Brier score (mean squared residual) was 0.467, which improved significantly with a new intercept to 0.415. Conclusions: The previously published Dutch dysphagia model needed an intercept update to match the Danish patient cohort. The implementation of a closed testing procedure on the current validation cohort allows quick and efficient validation of external NTCP models for patient selection in the future.
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Affiliation(s)
- C. R. Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Institute of Medical Physics, School of Physics, The University of Sydney, Sydney, Australia
| | - J. Friborg
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - K. Jensen
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - E. Samsøe
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - L. Johnsen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - R. Zukauskaite
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - C. Grau
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - C. Maare
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - J. Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - H. Primdahl
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Å. Bratland
- The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | | | - M Andersen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - J. G. Eriksen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - J. Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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Lassen P, Huang S, Su J, O’Sullivan B, Waldron J, Andersen M, Primdahl H, Johansen J, Kristensen C, Andersen E, Alsner J, Lilja-Fischer J, Bratman S, Spreafico A, de Almeida J, Xu W, Overgaard J. Treatment Outcomes and Survival Following Primary (chemo) Radiotherapy in HPV+ Oropharynx Cancer: A Largescale Comparison of Two Institutions. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Slavkovic K, Nault E, Jusselme T, Andersen M. Life-Cycle Assessment as a decision-support tool for early phases of urban planning: evaluating applicability through a comparative approach. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1755-1315/323/1/012030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
While ambitious environmental objectives are being set for new constructions in Switzerland, the assessment of urban-scale projects and comparison of their performance to national targets are made possible by a growing number of life-cycle assessment (LCA) tools. However, previous research emphasizes the lack of existing tools to support the decision-making process at the early design stage, characterized by a low level of project details. This paper presents a comparison between three LCA tools. The first, stemming from a research and development project (SETUP), is an exploration tool relying on a database of urban-level scenarios and their environmental performance, able to convert district targets (e.g. 2000-Watt society objectives) into specific sub-targets at the building or component levels. The other two are online LCA tools currently available to practitioners (Sméo and Calculation tool for 2000-Watt-society-sites RH II ), that allow assessing the project and verifying its compliance with a given target. Each tool was applied to a low-carbon case study, the blueFactory district in Fribourg (Switzerland), in two hypothetical contexts corresponding to the schematic and detailed project development phases, characterized by different levels of details. When used for the assessment of a project at a more advanced development stage with a high resolution of detail, findings indicate that Smeo and RH II provide similar environmental performance results. However, in early planning stages, SETUP shows better abilities to support decision-making by providing ranges of results and highlighting uncertainties and the influence of design parameters that have not yet been fixed.
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Meyer MK, Andersen M, Ring T, Andersen GN, Ehlers LH, Rasmussen C, Stensballe A. Personalized rheumatic medicine through dose reduction reduces the cost of biological treatment – a retrospective intervention analysis. Scand J Rheumatol 2019; 48:398-407. [DOI: 10.1080/03009742.2019.1585940] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- MK Meyer
- Department of Rheumatology, North Denmark Regional Hospital, Hjoerring, Denmark
- Center for Clinical Science, Aalborg University, Aalborg, Denmark
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
- Center for Clinical Research, North Denmark Regional Hospital, Hjoerring, Denmark
- The DANBIO Registry and Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Centre of Head and Orthopedics, Rigshospitalet, Glostrup, Denmark
| | - M Andersen
- Department of Rheumatology, North Denmark Regional Hospital, Hjoerring, Denmark
- Center for Clinical Science, Aalborg University, Aalborg, Denmark
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - T Ring
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Health Economics and Management, Aalborg University, Aalborg, Denmark
| | - GN Andersen
- Department of Rheumatology, North Denmark Regional Hospital, Hjoerring, Denmark
- Center for Clinical Science, Aalborg University, Aalborg, Denmark
- Center for Clinical Research, North Denmark Regional Hospital, Hjoerring, Denmark
| | - LH Ehlers
- Department of Health Economics and Management, Aalborg University, Aalborg, Denmark
| | - C Rasmussen
- Department of Rheumatology, North Denmark Regional Hospital, Hjoerring, Denmark
- Center for Clinical Science, Aalborg University, Aalborg, Denmark
- The DANBIO Registry and Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Centre of Head and Orthopedics, Rigshospitalet, Glostrup, Denmark
- Department of Health Economics and Management, Aalborg University, Aalborg, Denmark
| | - A Stensballe
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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