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Simon M, Indermaur M, Schenk D, Voumard B, Zderic I, Mischler D, Pretterklieber M, Zysset P. Homogenized finite element analysis of distal tibia sections: Achievements and limitations. Bone Rep 2024; 21:101752. [PMID: 38590390 PMCID: PMC10999809 DOI: 10.1016/j.bonr.2024.101752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/04/2024] [Accepted: 03/20/2024] [Indexed: 04/10/2024] Open
Abstract
High-resolution peripheral quantitative computed tomography (HR-pQCT) based micro-finite element (μFE) analysis allows accurate prediction of stiffness and ultimate load of standardised (∼1 cm) distal radius and tibia sections. An alternative homogenized finite element method (hFE) was recently validated to compute the ultimate load of larger (∼2 cm) distal radius sections that include Colles' fracture sites. Since the mechanical integrity of the weight-bearing distal tibia is gaining clinical interest, it has been shown that the same properties can be used to predict the strength of both distal segments of the radius and the tibia. Despite the capacity of hFE to predict structural properties of distal segments of the radius and the tibia, the limitations of such homogenization scheme remain unclear. Therefore, the objective of this study is to build a complete mechanical data set of the compressive behavior of distal segments of the tibia and to compare quantitatively the structural properties with the hFE predictions. As a further aim, it is intended to verify whether hFE is also able to capture the post-yield strain localisation or fracture zones in such a bone section, despite the absence of strain softening in the constitutive model. Twenty-five fresh-frozen distal parts of tibias of human donors were used in this study. Sections were cut corresponding to an in-house triple-stack protocol HR-pQCT scan, lapped, and scanned using micro computed tomography (μCT). The sections were tested in compression until failure, unloaded and scanned again in μCT. Volumetric bone mineral density (vBMD) and bone mineral content (BMC) were correlated to compression test results. hFE analysis was performed in order to compare computational predictions (stiffness, yield load and plastic deformation field pattern) with the compressive experiment. Namely, strain localization was assessed based on digital volume correlation (DVC) results and qualitatively compared to hFE predictions by comparing mid-slices patterns. Bone mineral content (BMC) showed a good correlation with stiffness (R2 = 0.92) and yield (R2 = 0.88). Structural parameters also showed good agreement between the experiment and hFE for both stiffness (R2 = 0.96, slope = 1.05 with 95 % CI [0.97, 1.14]) and yield (R2 = 0.95, slope = 1.04 [0.94, 1.13]). The qualitative comparison between hFE and DVC strain localization patterns allowed the classification of the samples into 3 categories: bad (15 sections), semi (8), and good agreement (2). The good correlations between BMC or hFE and experiment for structural parameters were similar to those obtained previously for the distal part of the radius. The failure zones determined by hFE corresponded to registration only in 8 % of the cases. We attribute these discrepancies to local elastic/plastic buckling effects that are not captured by the continuum-based FE approach exempt from strain softening. A way to improve strain localization hFE prediction would be to use longer distal segments with intact cortical shells, as done for the radius. To conclude, the used hFE scheme captures the elastic and yield response of the tibia sections reliably but not the subsequent failure process.
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Affiliation(s)
- Mathieu Simon
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Michael Indermaur
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Denis Schenk
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Benjamin Voumard
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Ivan Zderic
- AO Research Institute Davos, Davos, Switzerland
| | | | - Michael Pretterklieber
- Division of macroscopical and clinical Anatomy, Medical University of Graz, Graz, Austria
| | - Philippe Zysset
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
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Bouchard PA, Parent-Racine G, Paradis-Gagnon C, Simon M, Lacasse Y, Lellouche F, Maltais F. Clinical implementation of automated O 2 titration in a tertiary care hospital. Respir Care 2024:respcare.11331. [PMID: 38490735 DOI: 10.4187/respcare.11331] [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: 06/29/2023] [Accepted: 03/13/2024] [Indexed: 03/17/2024]
Abstract
Background: When treating acute respiratory failure, both hypoxemia and hyperoxemia should be avoided. SpO2 should be monitored closely and O2 flows adjusted accordingly. Achieving this goal might be easier with automated O2 titration compared to manual titration of fixed-flow O2 We evaluated the feasibility of using an automated O2 titration device in subjects treated for acute hypoxemic respiratory failure in a tertiary care hospital.Methods: Healthcare workers received education and training about oxygen therapy and were familiarized with an automated O2 titration device (FreeO2, Oxynov, Quebec City, Canada). A coordinator was available from 8 am to 5 pm during week days to provide technical assistance. The ability of the device to maintain SpO2 within the prescribed therapeutic window was recorded. Basic clinical information was recorded.Results: Subjects were enrolled from November 2020 to August 2022. We trained 508 healthcare workers on use of automated O2 titration which was finally used on 872 occasions in 763 subjects, distributed on the respiratory, COVID-19 and thoracic surgery wards and the emergency room. Clinical information could be retrieved for 609 (80%) subjects who were on the system for a median of 3 days (interquartile range: 2 to 6 days) representing 2567 subject-days of clinical experience with the device. In the 82 (14%) subjects for whom this information was available, the system maintained SpO2 within the prescribed targets 89% of the time. Ninety-six subjects experienced clinical deterioration as defined by the need to be transferred to the intensive care unit and/or requirement of high nasal flow oxygen but none of these events were judged to be related to the O2 device.Conclusions: Automated O2 titration could be successfully implemented in hospitalized subjects with hypoxemic respiratory failure from various causes. This experience should foster further improvement of the device and recommendations for an optimized utilization.
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Affiliation(s)
- Pierre-Alexandre Bouchard
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - Geneviève Parent-Racine
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - Cassiopée Paradis-Gagnon
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - Mathieu Simon
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - Yves Lacasse
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - François Lellouche
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada
| | - François Maltais
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Québec, QC, Canada.
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Colard-Thomas J, Manceron C, Duflos C, Herman F, Simon M, Maria ATJ, Faillie JL, Viala M, Palassin P. Comparison of clinical safety between standard versus extended interval dosing of immune checkpoint inhibitors: a real-world retrospective cohort study. ESMO Open 2023; 8:102070. [PMID: 37988951 PMCID: PMC10774961 DOI: 10.1016/j.esmoop.2023.102070] [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: 06/13/2023] [Revised: 10/15/2023] [Accepted: 10/21/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Extended interval dosing (ED) for inhibitors of programmed cell death protein 1 (anti-PD-1) (nivolumab, pembrolizumab) or its ligand (anti-PD-L1) (durvalumab) were recently approved based on pharmacokinetic model results that predicted a benefit-risk profile comparable with the standard dosing (SD) regimen. However, safety data in real-world condition of use are lacking. The objective was to compare the incidence and the risk factors of serious immune-related adverse events (irAEs) and any-grade irAEs between the SD and ED regimens in patients treated with anti-PD-1 or anti-PD-L1. MATERIALS AND METHODS IrAEs were assessed from medical records in all new users of nivolumab, pembrolizumab, or durvalumab between 1 January 2019 and 31 December 2020 across two oncology centers in France. The incidence of irAEs was compared between both dosing regimens using Cox proportional hazards models adjusting for the main available confounders. RESULTS Among 686 patients included, 63% were new users of an SD regimen, 14% of ED regimen, and 23% started with SD and switched to ED regimen during follow-up. Overall, 34.6% of patients experienced at least one irAE of any grade and 11.4% presented at least one serious grade ≥3 irAE. No statistical difference was found between the SD and ED regimen on the risk of grade ≥3 irAEs [adjusted hazard ratio (HR) 1.40, 95% confidence interval (CI) 0.71-2.76] but our results suggest an increased risk of any-grade irAEs with the ED regimen (adjusted HR 1.46, 95% CI 1.00-2.12, P = 0.048). IrAEs resolved without sequelae in 46.4% of cases, and they were fatal for three patients (0.4%). Autoimmune pre-existing condition was confirmed as a risk factor for grade ≥3 irAEs (HR 2.56, 95% CI 1.53-4.27) and for all-grade irAEs (HR 1.60, 95% CI 1.17-2.20). CONCLUSIONS In a real-world setting, according to the regimen chosen by the oncologist based on clinical characteristics, we did not observe an increase in grade ≥3 irAE incidence between the SD and ED regimens.
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Affiliation(s)
- J Colard-Thomas
- Department of Medical Oncology, Montpellier Cancer Institute, Univ Montpellier, Montpellier, France.
| | - C Manceron
- Department of Medical Pharmacology and Toxicology, CHU Montpellier, University of Montpellier, Montpellier, France
| | - C Duflos
- Department of Medical Information, Public Health Unit, CHU Montpellier, Univ Montpellier, Montpellier, France
| | - F Herman
- Department of Medical Information, Public Health Unit, CHU Montpellier, Univ Montpellier, Montpellier, France
| | - M Simon
- Department of UPCO, CHU Montpellier, Univ Montpellier, Montpellier, France
| | - A T J Maria
- Internal Medicine & Immuno-Oncology (MedI(2)O), Institute for Regenerative Medicine and Biotherapy (IRMB), Saint Eloi Hospital, Montpellier University Hospital, Montpellier, France; University of Montpellier, IRMB, Inserm U1183, Montpellier, France
| | - J-L Faillie
- Department of Medical Pharmacology and Toxicology, CHU Montpellier, University of Montpellier, Montpellier, France; University of Montpellier, IDESP INSERM, Montpellier, France
| | - M Viala
- Department of Medical Oncology, Montpellier Cancer Institute, Univ Montpellier, Montpellier, France
| | - P Palassin
- Department of Medical Pharmacology and Toxicology, CHU Montpellier, University of Montpellier, Montpellier, France
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Žitnik M, Hrast M, Mihelič A, Bučar K, Turnšek J, Püttner R, Goldsztejn G, Marchenko T, Guillemin R, Journel L, Travnikova O, Ismail I, Piancastelli MN, Simon M, Ceolin D, Kavčič M. Auger Shake-Up Assisted Electron Recapture. Phys Rev Lett 2023; 131:203001. [PMID: 38039460 DOI: 10.1103/physrevlett.131.203001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/06/2023] [Accepted: 10/16/2023] [Indexed: 12/03/2023]
Abstract
The presence of doubly excited states (DESs) above the core-hole ionization threshold nontrivially modulates the x-ray absorption because the participator Auger decay couples DESs to the underlying low-energy core-hole continuum. We show that coupling also affects the high-energy continuum populated by the spectator Auger decay of DESs. For the K-L_{23}^{2} Auger decay of the 1s^{-1}3p^{-1}4s^{2}^{1}P state in argon, the competing nonresonant path is assigned to the recapture of the 1s photoelectron caused by emission of the fast electron from the shake-up K-L_{23}^{2} decay of the 1s^{-1} ion.
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Affiliation(s)
- M Žitnik
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 31, SI-1000 Ljubljana, Slovenia
| | - M Hrast
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - A Mihelič
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 31, SI-1000 Ljubljana, Slovenia
| | - K Bučar
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 31, SI-1000 Ljubljana, Slovenia
| | - J Turnšek
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 31, SI-1000 Ljubljana, Slovenia
| | - R Püttner
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany
| | - G Goldsztejn
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - T Marchenko
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - R Guillemin
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - L Journel
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - O Travnikova
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - I Ismail
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - M N Piancastelli
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - M Simon
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France
| | - D Ceolin
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - M Kavčič
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 31, SI-1000 Ljubljana, Slovenia
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Guillemin R, Inhester L, Ilchen M, Mazza T, Boll R, Weber T, Eckart S, Grychtol P, Rennhack N, Marchenko T, Velasquez N, Travnikova O, Ismail I, Niskanen J, Kukk E, Trinter F, Gisselbrecht M, Feifel R, Sansone G, Rolles D, Martins M, Meyer M, Simon M, Santra R, Pfeifer T, Jahnke T, Piancastelli MN. Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser. Struct Dyn 2023; 10:054302. [PMID: 37799711 PMCID: PMC10550338 DOI: 10.1063/4.0000197] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023]
Abstract
Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms.
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Affiliation(s)
- R. Guillemin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - L. Inhester
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - T. Mazza
- European XFEL, 22869 Schenefeld, Germany
| | - R. Boll
- European XFEL, 22869 Schenefeld, Germany
| | - Th. Weber
- Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720, USA
| | - S. Eckart
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt am Main, Germany
| | | | | | - T. Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - N. Velasquez
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - O. Travnikova
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - I. Ismail
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - J. Niskanen
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - E. Kukk
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | | | | | - R. Feifel
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - G. Sansone
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - D. Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - M. Martins
- Institut für Experimentalphysik, Universität Hamburg, 22761 Hamburg, Germany
| | - M. Meyer
- European XFEL, 22869 Schenefeld, Germany
| | - M. Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | | | - T. Pfeifer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - T. Jahnke
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M. N. Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
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6
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Marcuzzi D, Toigo V, Boldrin M, Chitarin G, Dal Bello S, Grando L, Luchetta A, Pasqualotto R, Pavei M, Serianni G, Zanotto L, Agnello R, Agostinetti P, Agostini M, Aprile D, Barbisan M, Battistella M, Berton G, Bigi M, Brombin M, Candela V, Candeloro V, Canton A, Casagrande R, Cavallini C, Cavazzana R, Cordaro L, Cruz N, Dalla Palma M, Dan M, De Lorenzi A, Delogu R, De Muri M, De Nardi M, Denizeau S, Fadone M, Fellin F, Ferro A, Gaio E, Gasparrini C, Gnesotto F, Jain P, La Rosa A, Lopez-Bruna D, Lorenzini R, Maistrello A, Manduchi G, Manfrin S, Marconato N, Mario I, Martini G, Milazzo R, Patton T, Peruzzo S, Pilan N, Pimazzoni A, Poggi C, Pomaro N, Pouradier-Duteil B, Recchia M, Rigoni-Garola A, Rizzetto D, Rizzolo A, Santoro F, Sartori E, Segalini B, Shepherd A, Siragusa M, Sonato P, Sottocornola A, Spada E, Spagnolo S, Spolaore M, Taliercio C, Tinti P, Tomsič P, Trevisan L, Ugoletti M, Valente M, Valisa M, Veronese F, Vignando M, Zaccaria P, Zagorski R, Zaniol B, Zaupa M, Zuin M, Cavenago M, Boilson D, Rotti C, Decamps H, Geli F, Sharma A, Veltri P, Zacks J, Simon M, Paolucci F, Garbuglia A, Gutierrez D, Masiello A, Mico G, Labate C, Readman P, Bragulat E, Bailly-Maitre L, Gomez G, Kouzmenko G, Albajar F, Kashiwagi M, Tobari H, Kojima A, Murayama M, Hatakeyama S, Oshita E, Maejima T, Shibata N, Yamashita Y, Watanabe K, Singh N, Singh M, Dhola H, Fantz U, Heinemann B, Wimmer C, Wünderlich D, Tsumori K, Croci G, Gorini G, Muraro A, Rebai M, Tardocchi M, Giacomelli L, Rigamonti D, Taccogna F, Bruno D, Rutigliano M, Longo S, Deambrosis S, Miorin E, Montagner F, Tonti A, Panin F. Lessons learned after three years of SPIDER operation and the first MITICA integrated tests. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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de Moura CEV, Laurent J, Bozek J, Briant M, Çarçabal P, Cubaynes D, Shafizadeh N, Simon M, Soep B, Püttner R, Goldsztejn G. Experimental and theoretical study of resonant core-hole spectroscopies of gas-phase free-base phthalocyanine. Phys Chem Chem Phys 2023. [PMID: 37252735 DOI: 10.1039/d3cp01746j] [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: 05/31/2023]
Abstract
We studied N 1s-1 inner-shell processes of the free base Phthalocyanine molecule, H2Pc, in the gas-phase. This complex organic molecule contains three different nitrogen sites defined by their covalent bonds. We identify the contribution of each site in ionized, core-shell excited or relaxed electronic states by the use of different theoretical methods. In particular, we present resonant Auger spectra along with a tentative new theoretical approach based on multiconfiguration self-consistent field calculations to simulate them. These calculations may pave the road towards resonant Auger spectroscopy in complex molecules.
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Affiliation(s)
- C E V de Moura
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
| | - J Laurent
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - J Bozek
- LOrme des Merisiers, Synchrotron SOLEIL, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - M Briant
- CEA, CNRS, NIMBE, Université Paris Saclay, 91191, Gif-Sur-Yvette Cedex, France
| | - P Çarçabal
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - D Cubaynes
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - N Shafizadeh
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, F-75005 Paris Cedex 05, France
| | - B Soep
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - R Püttner
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
| | - G Goldsztejn
- Université Paris-Saclay, Institut des Sciences Moléculaires d'Orsay ISMO, UMR CNRS 8214 F-91405, Orsay, France.
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8
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Vela-Peréz I, Ota F, Mhamdi A, Tamura Y, Rist J, Melzer N, Uerken S, Nalin G, Anders N, You D, Kircher M, Janke C, Waitz M, Trinter F, Guillemin R, Piancastelli MN, Simon M, Davis VT, Williams JB, Dörner R, Hatada K, Yamazaki K, Fehre K, Demekhin PV, Ueda K, Schöffler MS, Jahnke T. High-energy molecular-frame photoelectron angular distributions: a molecular bond-length ruler. Phys Chem Chem Phys 2023; 25:13784-13791. [PMID: 37159272 DOI: 10.1039/d2cp05942h] [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: 05/10/2023]
Abstract
We present a study on molecular-frame photoelectron angular distributions (MFPADs) of small molecules using circularly polarized synchrotron light. We find that the main forward-scattering peaks of the MFPADs are slightly tilted with respect to the molecular axis. This tilt angle is directly connected to the molecular bond length by a simple, universal formula. We apply the derived formula to several examples of MFPADs of C 1s and O 1s photoelectrons of CO, which have been measured experimentally or obtained by means of ab initio modeling. In addition, we discuss the influence of the back-scattering contribution that is superimposed over the analyzed forward-scattering peak in the case of homo-nuclear diatomic molecules such as N2.
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Affiliation(s)
- I Vela-Peréz
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - F Ota
- Department of Physics, University of Toyama, Toyama 930-8555, Gofuku 3190, Japan
| | - A Mhamdi
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
| | - Y Tamura
- Department of Physics, University of Toyama, Toyama 930-8555, Gofuku 3190, Japan
| | - J Rist
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - N Melzer
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - S Uerken
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - G Nalin
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - N Anders
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - D You
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - M Kircher
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - C Janke
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - M Waitz
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - F Trinter
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - R Guillemin
- Sorbonne Université CNRS, Laboratoire de Chimie Physique-Matiere et Rayonnement, LCPMR, F-75005, Paris, France
| | - M N Piancastelli
- Sorbonne Université CNRS, Laboratoire de Chimie Physique-Matiere et Rayonnement, LCPMR, F-75005, Paris, France
| | - M Simon
- Sorbonne Université CNRS, Laboratoire de Chimie Physique-Matiere et Rayonnement, LCPMR, F-75005, Paris, France
| | - V T Davis
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - J B Williams
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - R Dörner
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - K Hatada
- Department of Physics, University of Toyama, Toyama 930-8555, Gofuku 3190, Japan
| | - K Yamazaki
- RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - K Fehre
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - Ph V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
- Department of Chemistry, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - M S Schöffler
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - T Jahnke
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany.
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Ståhl F, Almqvist H, Kolloch J, Aspelin Å, Gontu V, Hummel E, van Vlimmeren M, Simon M, Thran A, Holmberg Å, Mazya MV, Söderman M, Delgado AF. Dual-Layer Detector Cone-Beam CT Angiography for Stroke Assessment: First-in-Human Results (the Next Generation X-ray Imaging System Trial). AJNR Am J Neuroradiol 2023; 44:523-529. [PMID: 37055159 PMCID: PMC10171384 DOI: 10.3174/ajnr.a7835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 02/27/2023] [Indexed: 04/15/2023]
Abstract
BACKGROUND AND PURPOSE In patients with stroke, IV cone-beam CTA in the angiography suite could be an alternative to CTA to shorten the door-to-thrombectomy time. However, image quality in cone-beam CTA is typically limited by artifacts. This study evaluated a prototype dual-layer detector cone-beam CT angiography versus CTA in patients with stroke. MATERIALS AND METHODS A prospective, single-center trial enrolled consecutive patients with ischemic or hemorrhagic stroke on initial CT. Intracranial arterial segment vessel conspicuity and artifact presence were evaluated on dual-layer cone-beam CTA 70-keV virtual monoenergetic images and CTA. Eleven predetermined vessel segments were matched for every patient. Twelve patients were necessary to show noninferiority to CTA. Noninferiority was determined by the exact binomial test; the 1-sided lower performance boundary was prospectively set to 80% (98.75% CI). RESULTS Twenty-one patients had matched image sets (mean age, 72 years). After excluding examinations with movement or contrast media injection issues, all readers individually considered dual-layer cone-beam CT angiography noninferior to CTA (CI boundary, 93%, 84%, 80%, respectively) when evaluating arteries relevant in candidates for intracranial thrombectomy. Artifacts were more prevalent compared with CTA. The majority assessment rated each individual segment except M1 as having noninferior conspicuity compared with CTA. CONCLUSIONS In a single-center stroke setting, dual-layer detector cone-beam CTA virtual monoenergetic images are noninferior to CTA under certain conditions. Notably, the prototype is hampered by a long scan time and is not capable of contrast media bolus tracking. After excluding examinations with such scan issues, readers considered dual-layer detector cone-beam CTA noninferior to CTA, despite more artifacts.
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Affiliation(s)
- F Ståhl
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
| | - H Almqvist
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
| | - J Kolloch
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
| | - Å Aspelin
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
| | - V Gontu
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
| | - E Hummel
- Image Guided Therapy (E.H., M.v.V.), Phillips Healthcare, Best, the Netherlands
| | - M van Vlimmeren
- Image Guided Therapy (E.H., M.v.V.), Phillips Healthcare, Best, the Netherlands
| | - M Simon
- Philips Research Hamburg (M. Simon, A.T.), Hamburg, Germany
| | - A Thran
- Philips Research Hamburg (M. Simon, A.T.), Hamburg, Germany
| | - Å Holmberg
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
| | - M V Mazya
- Neurology (M.V.M.), Karolinska University Hospital, Stockholm, Sweden
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
| | - M Söderman
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
| | - A F Delgado
- From the Departments of Neuroradiology (F.S., H.A., J.K., Å.A., V.G., Å.H., M. Söderman, A.F.D.)
- Department of Clinical Neuroscience (F.S., H.A., V.G., M.V.M., M. Söderman, A.F.D.) Karolinska Institutet, Stockholm, Sweden
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Deville M, Fedorowicz R, Grandjean F, Simon M, Charlier C. Synthetic Cathinones in Belgium: Two Case Reports with Different Outcomes Observed in the Emergency Room. J Anal Toxicol 2023; 46:e291-e295. [PMID: 36453752 DOI: 10.1093/jat/bkac092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 11/03/2022] [Accepted: 11/30/2022] [Indexed: 12/03/2022] Open
Abstract
We herein report two cases of cathinone intoxication. The first case is about a drug addict who was admitted to the emergency room after the injection of an unknown compound. He presented with tachycardia, palpitations, mydriasis, dyspnea, dizziness, headache and nausea. After leaving the hospital against medical advice, he returned the next day with police escort, presenting aggressiveness and agitation signs. One month later, he returned one more time for sleeping disorders, hallucinations and anxiety. He was finally transferred for his 21st detoxification treatment. The second case concerns a man who was wandering the streets and tried to escape when police officers called him. He confessed to snorting of N-ethylpentedrone and was admitted with severe agitation including delusion of persecution, tachycardia, mydriasis and fever. Because of renal failure, rhabdomyolysis and metabolic acidosis, he was transferred to the intensive care unit where he manifested worsening of the symptoms, turning into coma. He was intubated for 3 days before a complete resolution of the symptoms. A screening was performed by high-resolution mass spectrometry followed by quantifications made by high-performance liquid chromatography coupled with a diode array detector. In the first case, alpha-pyrrolidinohexiophenone was identified only during the first two admissions. However, as plenty of other psychotropic substances were also found, the cathinone alone could not be held directly responsible for the symptoms. In the second case, more than 2,000 ng/mL of N-ethylpentedrone was found without any decrease in the next 17 h, underlining the long half-life of this compound. Unlike the first case, symptoms could be clearly attributed to the cathinone. In conclusion, cathinones can be found on the Belgian illicit drug market, with various routes of administration and clinical consequences. In these two case reports, some common points were observed initially. However, one patient was finally able to leave the hospital without any treatment, whereas the other would most likely have died without intensive care.
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Affiliation(s)
- M Deville
- Laboratory of Clinical and Forensic Toxicology, CHU Liege, Avenue de l'Hôpital,1, Liege B-4000, Belgium
| | - R Fedorowicz
- Intensive Care Unit, Vivalia, South Luxembourg Clinic, Rue des Déportés 137, Arlon B-6700, Belgium
| | - F Grandjean
- Laboratory of Clinical Biology, South Luxembourg Clinic, Rue des Déportés 137, Arlon B-6700, Belgium
| | - M Simon
- Intensive Care Unit, Vivalia, South Luxembourg Clinic, Rue des Déportés 137, Arlon B-6700, Belgium
| | - C Charlier
- Laboratory of Clinical and Forensic Toxicology, CHU Liege, Avenue de l'Hôpital,1, Liege B-4000, Belgium
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11
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Briot J, Arbey E, Bernard D, Simon M, Mechin M. 204 Is the proteasome activity involved in filaggrin breakdown? J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Simon M, Kuschel LP, von Hoff K, Hernáiz Driever P, Hain EG, Koch A, Capper D, Schulz M, Thomale U, Euskirchen P. P04.03.B Rapid DNA methylation-based classification of pediatric brain tumors from ultrasonic aspirate specimens. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.118] [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
Cavitating ultrasonic aspirator (CUSA) devices are commonly used in neurosurgical procedures to carefully debulk tumor from adjacent healthy brain tissue. Here, we explore the feasibility of using ultrasonic minced tumor tissue to classify otherwise discarded sample material by DNA methylation according to the respective World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS) using low pass nanopore whole genome sequencing.
Material and Methods
21 ultrasonic aspirated specimens from patients undergoing surgery in the department of pediatric neurosurgery at the Charité-Universitätsmedizin Berlin with either newly diagnosed cerebral lesions or pre-treated lesions were processed by nanopore sequencing to generate copy number profiles and ad-hoc random forest classification. Results were compared to microarray-based routine profiling. Tumor purity was assessed.
Results
In 19/21 (90.5 %) samples the minimum amount of 1,000 CpG sites were sequenced. In 20/21 (95.2 %) cases copy number variation profiles could be generated and matched microarray derived copy number profiles, allowing for identification of diagnostically or therapeutically relevant pathognomonic alterations. 12/17 (70.6 %) samples were concordantly classified to the corresponding microarray-based diagnosis by routine neuropathological workup. Applying recently defined thresholds for nanopore-based classification resulted in sensitivity of 64.7 % and specificity of 100 %.
Conclusion
CUSA referred sample material of pediatric brain tumors allows for methylation-based classification according to the respective WHO classification of CNS tumors with acceptable sensitivity and high specificity. Hereby, a promising opportunity for accurate classification of pediatric brain tumors by a time- and cost-efficient advanced molecular technique is offered using otherwise discarded tumor tissue.
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Affiliation(s)
- M Simon
- Charité Universitätsmedizin Berlin - Department of Pediatric Oncology and Hematology , Berlin , Germany
| | - L P Kuschel
- Charité Universitätsmedizin Berlin - Department of Neurology with Experimental Neurology , Berlin , Germany
| | - K von Hoff
- Charité Universitätsmedizin Berlin - Department of Pediatric Oncology and Hematology , Berlin , Germany
| | - P Hernáiz Driever
- Charité Universitätsmedizin Berlin - Department of Pediatric Oncology and Hematology , Berlin , Germany
| | - E G Hain
- Charité Universitätsmedizin Berlin - Department of Neuropathology , Berlin , Germany
| | - A Koch
- Charité Universitätsmedizin Berlin - Department of Neuropathology , Berlin , Germany
| | - D Capper
- Charité Universitätsmedizin Berlin - Department of Neuropathology , Berlin , Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - M Schulz
- Charité Universitätsmedizin Berlin - Department of Pediatric Neurosurgery , Berlin , Germany
| | - U Thomale
- Charité Universitätsmedizin Berlin - Department of Pediatric Neurosurgery , Berlin , Germany
| | - P Euskirchen
- Charité Universitätsmedizin Berlin - Department of Neurology with Experimental Neurology , Berlin , Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ) , Heidelberg , Germany
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13
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Koulentianos D, Carravetta V, Couto RC, Andersson J, Hult Roos A, Squibb RJ, Wallner M, Eland JHD, Simon M, Ågren H, Feifel R. Formation and relaxation of K −2 and K −2V double-core-hole states in n-butane. J Chem Phys 2022; 157:044306. [DOI: 10.1063/1.5135388] [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
Using a magnetic bottle multi-electron time-of-flight spectrometer in combination with synchrotron radiation, double-core-hole pre-edge and continuum states involving the K-shell of the carbon atoms in n-butane ( n-C4H10) have been identified, where the ejected core electron(s) and the emitted Auger electrons from the decay of such states have been detected in coincidence. An assignment of the main observed spectral features is based on the results of multi-configurational self-consistent field (MCSCF) calculations for the excitation energies and static exchange (STEX) calculations for energies and intensities. MCSCF results have been analyzed in terms of static and dynamic electron relaxation as well as electron correlation contributions to double-core-hole state ionization potentials. The analysis of applicability of the STEX method, which implements the one-particle picture toward the complete basis set limit, is motivated by the fact that it scales well toward large species. We find that combining the MCSCF and STEX techniques is a viable approach to analyze double-core-hole spectra.
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Affiliation(s)
- D. Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Cedex 05, F-75005 Paris, France
| | - V. Carravetta
- Institute of Chemical Physical Processes - CNR, via Moruzzi 1, 56124 Pisa, Italy
| | - R. C. Couto
- Department of Chemistry-Ångström, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - J. Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - A. Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - M. Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - J. H. D. Eland
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - M. Simon
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Cedex 05, F-75005 Paris, France
| | - H. Ågren
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
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Ballinger TJ, Djuric Z, Sardesai S, Hovey K, Andrews C, Braskey TM, Rohan TE, Saquib N, Shadyab AH, Simon M, Wactawski-Wende J, Wallace R, Kato I. Proton Pump Inhibitor Use and Obesity-Associated Cancers in the Women's Health Initiative. Cancer Epidemiol Biomarkers Prev 2022. [PMID: 35775214 DOI: 10.1158/1055-9965.epi-22-0475] [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: 11/16/2022] Open
Abstract
PURPOSE Proton pump inhibitors (PPIs) inhibit fatty acid synthase (FAS), a critical enzyme in lipogenesis, energy balance, and cancer cell survival. We aimed to evaluate the association of PPI use with incidence of common obesity- related cancers in women: postmenopausal breast, colorectal, and endometrial cancers. METHODS Our study included 124,931 postmenopausal who were enrolled in the Women's Health Initiative (WHI) observational study and clinical trials, and had responded to a year 3 follow-up assessment. We examined prescription and over the counter use of PPI and/or histamine 2 receptor antagonists (H2RA) at baseline and year 3, to isolate potential effects of FAS inhibition by PPI rather than simply acid suppression. Incident cancer cases were physician-adjudicated. Cox proportional hazard regression models were used to estimate multivariable hazard ratios (HR) and 95% confidence intervals (CI) for associations between PPI and/or H2RA use and cancer incidence after year 3. RESULTS There were 7956 PPI ever users (with or without H2RA use) and 9398 H2RA only users. PPI or H2RA use was not associated with risk of breast cancer (n=9186 cases), compared to women who did not use either agent (HR 1.01, 95% CI 0.93-1.10 and HR 0.95 95% CI 0.87-1.03, respectively). The incidence of colorectal cancer (n=2280) was significantly lower in PPI users (HR 0.75, 95% CI 0.61-0.92), but not in H2RA users (HR 1.13, 95% CI 0.97-1.31). This association was strengthened with increasing duration (p=0.006) and potency (p=0.005) of PPI use and held regardless of BMI or NSAID use. PPI or H2RA use was not associated with endometrial cancer (n=1231) (HR 0.81, 95% CI 0.61-1.07 and HR 1.13, 95% CI 0.91-1.40, respectively), but showed a trend in decreased risk with increasing PPI potency (P=0.048). CONCLUSIONS Among postmenopausal women, PPI use, but not H2RA use, demonstrated an inverse, dose-responsive association with colorectal cancer incidence. This was consistent with preclinical data that FAS inhibition prevents colon cancer progression and supports further investigation of this commonly used medication as a cancer preventive agent. PPI use was not associated with incidence of breast or endometrial cancer.
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Nyarondi P, Péterfalvi Á, Szennai M, Németh N, Tényi T, Czéh B, Simon M. Mentalizing abilities and serum lipid levels in adult MDD patients with childhood maltreatment – preliminary results. Eur Psychiatry 2022. [PMCID: PMC9567023 DOI: 10.1192/j.eurpsy.2022.393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Childhood maltreatment (CM) contributes to negative mental and physical health outcomes including major depressive disorder (MDD), and an elevated risk for cardiovascular disease (CDV) in adults. Also, childhood maltreatment can be related to mentalizing deficits in MDD. Cardio-metabolic diseases often coincide with MDD and worsen its course and outcome. Little is known on the interplay of these factors.
Objectives
We examined MDD patients with and without CM to explore the effects of CM on serum lipid and lipoprotein levels and assessed their mentalizing abilities. Self-oriented mentalizing was operationalized as emotional self-awareness/alexithymia, other-oriented mentalizing was defined as theory of mind (ToM).
Methods
MDD patients (N=42) and healthy controls (n=20) matched in age, sex, and lifestyle were investigated. Total cholesterol, triglycerides, high- and low-density lipoproteins (HDL-C and LDL-C), body mass index, and exercise in a typical week were measured. Beck Depression Inventory, Childhood Trauma Questionnaire, Toronto Alexithymia scale, and the Reading the mind in the Eyes Test were used to assess clinical symptoms, mentalizing abilities and CM.
Results
After controlling for depressive symptom severity, demographic and lifestyle variables, CM was found to be a strong predictor of serum lipid alterations. Mentalizing deficits correlated with CM. Serum triglycerides, HDL-C were significant predictors of ToM performance (P<0.05, and P=0.005) and alexithymia (P< 0.05, and P< 0.05) in the MDD group.
Conclusions
Several, inter-correlated pathways may mediate the undesirable effects of CM on the course and outcome of MDD. According to our preliminary results, diminished self-awareness and ToM can be possible mediating factors.
Disclosure
This work was financially supported by the Hungarian Brain Research Program (2017-1.2.1-NKP-2017-00002)
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Simon M, Nagy S, Kürtös Z, Perlaki G, Gálber M, Czéh B. MDD patients with early life stress deactivate the frontostriatal network during facial emotion recognition paradigm: A functional MRI study. Eur Psychiatry 2022. [PMCID: PMC9567503 DOI: 10.1192/j.eurpsy.2022.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Early life stress (ELS) is a significant risk factor for major depressive disorder (MDD) in adults. Functional magnetic resonance imaging (fMRI) studies using face emotion processing paradigms have found altered blood-oxygen-level-dependent (BOLD) responses in the cortico-limbic network both in individuals exposed to ELS and in patients with MDD. Thus, early life stress may have a long-lasting impact on brain areas responsible for the processing of socio-affective
cues.
Objectives
By applying a facial emotion recognition (FER) fMRI paradigm, we examined the long-term effect of childhood adversity on brain activity in MDD patients with and without ELS.
Methods
MDD patients without ELS (MDD, N=19), those with ELS (MDD+ELS, N=21), and healthy controls (HC, N=21) matched for age, sex, and intelligence quotient underwent fMRI scanning while performing a block design FER task with faces expressing negative emotions. The severity of ELS was assessed with the 28-item Childhood Trauma Questionnaire.
Results
Both MDD and MDD+ELS patients were slightly impaired in recognizing sad faces. Statistical analysis of brain activity found that MDD+ELS patients had significantly reduced negative BOLD responses in the right anterior paracingulate gyrus, subcallosal cortex accumbens compared to HCs. Moreover, the MDD+ELS group had a significantly increased negative BOLD signal in the right postcentral and precentral gyri relative to the HC group. MDD+ELS patients had reduced negative BOLD response in their anterior paracingulate gyrus compared to the MDD group.
Conclusions
Our results support that adult MDD patients with significant ELS are impaired in facial emotion recognition and they display functional alterations in the frontostriatal circuits.
Disclosure
This work was financially supported by the Hungarian Brain Research Program (2017-1.2.1-NKP-2017-00002)
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Simon M, Lefèvre G, Dubois R, Terriou L. Transformation de variants lymphoïdes de syndrome hyperéosinophilique en lymphome angio-immunoblastique. Rev Med Interne 2022. [DOI: 10.1016/j.revmed.2022.03.249] [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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Kocher A, Simon M, Dwyer AA, Blatter C, Bogdanovic J, Künzler-Heule P, Villiger P, Dan D, Distler O, Walker U, Nicca D. OP0212-HPR PATIENT ASSESSMENT CHRONIC ILLNESS CARE (PACIC) AND ITS ASSOCIATIONS WITH QUALITY OF LIFE AMONG SWISS PATIENTS WITH SYSTEMIC SCLEROSIS – A MIXED METHODS STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.595] [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
BackgroundVariable disease presentation and symptom burden in patients living with systemic sclerosis (SSc) require a chronic care approach including competent, coordinated, multidisciplinary collaboration as well as self-management support targeting individual patient needs. The Chronic Care Model (CCM) is a longstanding and widely adopted model guiding chronic illness management.1 Little is known about how CCM elements are implemented in SSc care or how patients’ care experiences relate to health-related quality of life (HRQoL).ObjectivesFirst, to describe current SSc care in Switzerland according to the CCM from the patient perspective and examine relationships with HRQoL. Second, to explain these results by patients’ illness and care experiences.MethodsWe employed an explanatory sequential mixed methods design (Figure 1). First, we conducted a cross-sectional quantitative survey (n=101 Swiss patients) using the Patient Assessment of Chronic Illness Care (PACIC-20)2 and Systemic Sclerosis Quality of Life (SScQoL)3 questionnaires. Because PACIC has not been used in the context of SSc, we used the Mokken model to test the construct validity of the PACIC scale and its subscales. After excluding five problematic items, H coefficients were ‘strong’ for the subscales and the global scale (0.52) suggesting a robust unidimensional scale.Figure 1.Schematic of the explanatory, sequential mixed methods designNext, we used data from individual patient interviews (n=4) and one patient focus group (n=4) to further explore care experiences of people living with SSc with a focus on the PACIC dimensions.ResultsThe mean overall PACIC-15 score was 3.0 / 5.0 (95% CI: 2.8–3.2, n= 100), indicating care was ‘never’ to ‘generally not’ aligned with the CCM. Lowest subscale scores related to ‘goal setting/tailoring’ (mean = 2.5, 95% CI: 2.2–2.7) and ‘problem solving/contextual counselling’ (mean = 2.9, 95% CI: 2.7–3.2) (Table 1). No significant associations were identified between the mean PACIC-15 and SScQoL scores.Table 1.Summary of scores (n=101) for the 15-item PACIC scale (adapted version of the original 20-item scale)PACIC mean scores (95% CI)PACIC 15-item mean score3.0 (2.8–3.2)1: Patient activation(mean of items 1–3)3.4 (3.1–3.6)2: Delivery system design/ Decision Support(items 4–6)3.2 (3.0–3.4)3: Goal setting/ Tailoring(items 7–9)2.5 (2.2–2.7)4: Problem solving/ Contextual Counselling(items 12–15)2.9 (2.7–3.2)5: Follow-up/ Coordination(items 19–20)3.3 (3.0–3.5)Note: CI=Confidence interval; PACIC=Patient Assessment of Chronic Illness CareInterviews revealed patients frequently encounter major shortcomings in care including experiencing organized care with limited participation, not knowing which strategies are effective or harmful and feeling left alone with disease and psychosocial consequences. Patients often responded to challenges by dealing with the illness in tailored measure, taking over complex coordination of care and relying on an accessible and trustworthy team.ConclusionThe low PACIC mean overall score is comparable to findings in patients with common chronic diseases. Key elements of the CCM have yet to be systematically implemented in Swiss SSc management. Identified gaps in care related to lack of shared decision-making, goal-setting and individual counselling –aspects that are essential for supporting patient self-management skills. Furthermore, there appears to be a lack of complex care coordination tailored to individual patient needs.References[1]Wagner EH. Chronic disease management: what will it take to improve care for chronic illness? Eff Clin Pract 1998;1(1):2-4.[2]Glasgow RE, Wagner EH, Schaefer J, et al. Development and validation of the Patient Assessment of Chronic Illness Care (PACIC). Med Care 2005;43(5):436-44.[3]Ndosi M, Alcacer-Pitarch B, Allanore Y, et al. Common measure of quality of life for people with systemic sclerosis across seven European countries: a cross-sectional study. Ann Rheum Dis 2018;77(7):1032-38.AcknowledgementsWe wish to thank the participating patients, the Swiss Scleroderma patient association, and the focus group participants for their generosity and collaboration.Disclosure of InterestsAgnes Kocher Consultant of: Pfizer, Grant/research support from: Boehringer Ingelheim, Swiss Nursing Science Foundation, Swiss League Against Rheumatism, University of Basel, Michael Simon: None declared, Andrew A. Dwyer Grant/research support from: Boston College, U.S. National Institutes of Health (U.S.A.), Catherine Blatter: None declared, Jasmina Bogdanovic: None declared, Patrizia Künzler-Heule: None declared, Peter Villiger: None declared, Diana Dan: None declared, Oliver Distler Speakers bureau: Bayer, Boehringer Ingelheim, Janssen, Medscape, Consultant of: Abbvie, Acceleron, Alcimed, Amgen, AnaMar, Arxx, AstraZeneca, Baecon, Blade, Bayer, Boehringer Ingelheim, Corbus, CSL Behring, 4P Science, Galapagos, Glenmark, Horizon, Inventiva, Kymera, Lupin, Miltenyi Biotec, Mitsubishi Tanabe, MSD, Novartis, Prometheus, Roivant, Sanofi and Topadur., Grant/research support from: Kymera, Mitsubishi Tanabe, Boehringer Ingelheim, Ulrich Walker: None declared, Dunja Nicca: None declared
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Papp J, Simon M, Csiki E, Kovács Á. PO-1834 Cone beam CT verification of mask based immobilization of stereotactic radiotherapy treatments. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03797-5] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kolaitis N, Chen H, Calabrese D, Kumar K, Obata J, Bach C, Golden J, Simon M, Kukreja J, Hays S, Leard L, Singer J, De Marco T. The Lung Allocation Score Remains Inequitable for Patients with PAH, Even After the 2015 Revision. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.339] [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: 11/27/2022] Open
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Goldsztejn G, Guillemin R, Marchenko T, Travnikova O, Céolin D, Journel L, Simon M, Piancastelli MN, Püttner R. Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase. Phys Chem Chem Phys 2022; 24:6590-6604. [PMID: 35234229 DOI: 10.1039/d1cp05662j] [Citation(s) in RCA: 2] [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: 11/21/2022]
Abstract
Auger decay after photoexcitation or photoemission of an electron from a deep inner shell in the hard X-ray regime can be rather complex, implying a multitude of phenomena such as multiple-step cascades, post-collision interaction (PCI), and electronic state-lifetime interference. Furthermore, in a molecule nuclear motion can also be triggered. Here we discuss a comprehensive theoretical method which allows us to analyze in great detail Auger spectra measured around an inner-shell ionization threshold. HCl photoexcited or photoionized around the deep Cl 1s threshold is chosen as a showcase. Our method allows calculating Auger cross sections considering the nature of the ground, intermediate and final states (bound or dissociative), and the evolution of the relaxation process, including both electron and nuclear dynamics. In particular, we show that we can understand and reproduce a so-called experimental 2D-map, consisting of a series of resonant Auger spectra measured at different photon energies, therefore obtaining a detailed picture of all above-mentioned dynamical phenomena at once.
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Affiliation(s)
- G Goldsztejn
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France.
| | - R Guillemin
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - T Marchenko
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - O Travnikova
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - D Céolin
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - L Journel
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - M Simon
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
| | - M N Piancastelli
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France. .,Department of Physics and Astronomy, Uppsala University, SE-751 20 Uppsala, Sweden
| | - R Püttner
- Fachbereich Physik, Freie Universität Berlin, D-14195 Berlin, Germany.
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Dusart A, Mertens B, Van Hoeck E, Simon M, Goscinny S, Collin S. Occurrence of (suspected) genotoxic flavoring substances in Belgian alcohol-free beers. Food Chem 2022; 369:130917. [PMID: 34464835 DOI: 10.1016/j.foodchem.2021.130917] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/11/2021] [Accepted: 08/17/2021] [Indexed: 11/04/2022]
Abstract
The regulatory landscape of flavorings is evolving, thereby putting pressure on control laboratories to develop analytical methods for a wide range of compounds in various types of food and drinks. In order to improve the monitoring of flavoring substances, a versatile and accurate analytical method using the solvent-assisted flavor evaporation (SAFE) technique coupled to GC-MS(SIM) was developed and validated. Focus was put on authorized flavoring substances requiring specific attention due to a genotoxic concern based on information from European risks assessment reports. Thirty-seven (suspected) genotoxic flavoring substances were analyzed in a selection of ten alcohol-free beers. Five suspected genotoxic compounds (i.e. 1-(2-furyl)-2-propanone, 2-acetylfuran, 2-acetyl-5-methylfuran, 2-acetyl-3,5-dimethylfuran, hex-2-eno-1,4-lactone) as well as two confirmed genotoxic flavoring substances (p-mentha-1,8-dien-7-al, 2,4-pentanedione) were identified and quantified among the selected samples. Low concentrations and natural occurrences of the identified compounds suggested that these were not added as such but rather originated from heat-treatments or from plant-based extracts.
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Affiliation(s)
- A Dusart
- Department of Chemical and Physical Health Risks, Sciensano, Rue Juliette Wytsman 14, 1050 Ixelles, Belgium.
| | - B Mertens
- Department of Chemical and Physical Health Risks, Sciensano, Rue Juliette Wytsman 14, 1050 Ixelles, Belgium
| | - E Van Hoeck
- Department of Chemical and Physical Health Risks, Sciensano, Rue Juliette Wytsman 14, 1050 Ixelles, Belgium
| | - M Simon
- Unité de Brasserie et des Industries Alimentaires, Louvain Institute of Biomolecular Science and Technology (LIBST), Faculté des Bioingénieurs, Université catholique de Louvain, Croix du Sud 2, Box L7.05.07, 1348 Louvain-la-Neuve, Belgium
| | - S Goscinny
- Department of Chemical and Physical Health Risks, Sciensano, Rue Juliette Wytsman 14, 1050 Ixelles, Belgium
| | - S Collin
- Unité de Brasserie et des Industries Alimentaires, Louvain Institute of Biomolecular Science and Technology (LIBST), Faculté des Bioingénieurs, Université catholique de Louvain, Croix du Sud 2, Box L7.05.07, 1348 Louvain-la-Neuve, Belgium
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Abstract
BACKGROUND Humidification of inspiratory gases is mandatory in all mechanically ventilated patients in ICUs, either with heated humidifiers (HHs) or with heat and moisture exchangers (HMEs). In patients with COVID-19, the choice of the humidification device may have relevant impact on patients' management as demonstrated in recent studies. We reported data from 2 ICUs using either HME or HH. METHODS Data from patients with COVID-19 requiring invasive mechanical ventilation during the first wave in 2 ICUs in Québec City were reviewed. In one ICU, HMEs were used, whereas heated-wire HHs were used in the other ICU. We compared ventilator settings and arterial blood gases at day one after adjustment of ventilator settings. Episodes of endotracheal tube occlusions (ETOs) or subocclusions and a strategy to limit the risk of under-humidification were reported. On a bench test, we measured humidity with psychrometry with HH at different ambient temperature and evaluated the relation with heater plate temperature. RESULTS We reported data from 20 subjects positive for SARS-Cov-2, including 6 in the ICU using HME and 14 in the ICU using HH. In the HME group, PaCO2 was higher (48 vs 42 mm Hg) despite higher minute ventilation (171 vs 145 mL/kg/min predicted body weight [PBW]). We also reported 3 ETOs occurring in the ICU using HH. The hygrometric bench study reported a strong correlation between heater plate temperatures of the HH and humidity delivered. After implementation of measures to avoid under-humidification, including heater plate temperature monitoring, no more ETOs occurred. CONCLUSIONS The choice of the humidification device used in subjects with COVID-19 had a relevant impact on ventilation efficiency (increased CO2 removal with lower dead space) and on complications related to low humidity, including ETOs that may be present with heated-wire HHs when used with high ambient temperatures.
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Affiliation(s)
- Carole-Anne Lavoie-Bérard
- département d'anesthésiologie et de soins intensifs, division de soins intensifs, Université Laval, Québec City, Canada
| | - Jean-Claude Lefebvre
- département d'anesthésiologie et de soins intensifs, division de soins intensifs, Université Laval, Québec City, Canada
| | - Pierre-Alexandre Bouchard
- centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec City, Canada
| | - Mathieu Simon
- centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec City, Canada
| | - François Lellouche
- centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec City, Canada.
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Simon M, Indermaur M, Schenk D, Hosseinitabatabaei S, Willie BM, Zysset P. Fabric-elasticity relationships of tibial trabecular bone are similar in osteogenesis imperfecta and healthy individuals. Bone 2022; 155:116282. [PMID: 34896360 DOI: 10.1016/j.bone.2021.116282] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/28/2021] [Accepted: 11/30/2021] [Indexed: 11/02/2022]
Abstract
Osteogenesis Imperfecta (OI) is an inherited form of bone fragility characterised by impaired synthesis of type I collagen, altered trabecular bone architecture and reduced bone mass. High resolution peripheral computed tomography (HR-pQCT) is a powerful method to investigate bone morphology at peripheral sites including the weight-bearing distal tibia. The resulting 3D reconstructions can be used as a basis of micro-finite element (FE) or homogenized finite element (hFE) models for bone strength estimation. The hFE scheme uses homogenized local bone volume fraction (BV/TV) and anisotropy information (fabric) to compute healthy bone strength within a reasonable computation time using fabric-elasticity relationships. However, it is unclear if these relationships quantified previously for healthy controls are valid for trabecular bone from OI patients. Thus, the aim of this study is to investigate fabric-elasticity relationships in OI trabecular bone compared to healthy controls. In the present study, the morphology of distal tibiae from 50 adults with OI were compared to 120 healthy controls using second generation HR-pQCT. Six cubic regions of interest (ROIs) were selected per individual in a common anatomical region. A first matching between OI and healthy control group was performed by selecting similar individuals to obtain identical mean and median age and sex distribution. It allowed us to perform a first morphometric analysis and compare the outcome with literature. Then, stiffness tensors of the ROIs were computed using μFE and multiple linear regressions were performed with the Zysset-Curnier orthotropic fabric-elasticity model. An initial fit was performed on both the OI group and the healthy control group using all extracted ROIs. Then, data was filtered according to a fixed threshold for a defined coefficient of variation (CV) assessing ROI heterogeneity and additional linear regressions were performed on these filtered data sets. These full and filtered data were in turn compared with previous results from μCT reconstructions obtained in other anatomical locations. Finally, the ROIs of both groups were matched according to their BV/TV and degree of anisotropy (DA). Linear regressions were performed using these matched data to detect statistical differences between the two groups. Compared to healthy controls, we found the OI samples to have significantly lower BV/TV and trabecular number (Tb.N.), significantly higher CV, trabecular separation (Tb.Sp.) and trabecular separation standard deviation (Tb.Sp.SD), but no differences in trabecular thickness (Tb.Th.). These results are in agreement with previous studies. The stiffnesses of highly heterogeneous ROIs were randomly lower with respect to the fabric-elasticity relationships, which reflects the limit of validity of the computational homogenisation methodology. This limitation does not challenge the fabric-elasticity relationship, which extrapolation to heterogeneous ROIs is probably reasonable but can simply not be evaluated with the employed homogenisation methodology. Moreover, due to their low BV/TV, the potential (unknown) errors on these heterogeneous ROIs would have negligible influence on whole bone stiffness in comparison to homogeneous ROIs which are orders of magnitude stiffer. The filtering of highly heterogeneous ROIs removed these low stiffness ROIs and led to similar correlation coefficients for both OI and healthy groups. Finally, the BV/TV and DA matched data revealed no significant differences in fabric-elasticity parameters between OI and healthy individuals. Moreover, the filtering step did not exclude a particular OI type. Compared to previous studies, the stiffness constants from the 61 μm resolution HR-pQCT ROIs were lower than for the 36 μm resolution μCT ROIs. In conclusion, OI trabecular bone of the distal tibia was shown to be significantly more heterogeneous and have a lower BV/TV than healthy controls. Despite the reduced linear regression parameters found for HR-pQCT images, the fabric-elasticity relationships between OI and healthy individuals are similar when the trabecular bone ROIs are sufficiently homogeneous to perform the computational stiffness analysis. Accordingly, the elastic properties used for FEA of healthy bones are also valid for OI bones.
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Affiliation(s)
- Mathieu Simon
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
| | - Michael Indermaur
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Denis Schenk
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Seyedmahdi Hosseinitabatabaei
- Research Centre, Shriners Hospital for Children, Montreal, Canada; Department of Pediatric Surgery, McGill University, Montreal, Canada; Department of Biomedical Engineering, McGill University, Montreal, Canada
| | - Bettina M Willie
- Research Centre, Shriners Hospital for Children, Montreal, Canada; Department of Pediatric Surgery, McGill University, Montreal, Canada; Department of Biomedical Engineering, McGill University, Montreal, Canada
| | - Philippe Zysset
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
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Ortner M, Goldhardt O, Diehl-Schmid J, Yakushev I, Lanz K, Hedderich DM, Manuilova E, Simon M, Weinberger JP, Grimmer T. Elecsys Cerebrospinal Fluid Assays Accurately Distinguish Alzheimer's Disease from Frontotemporal Lobar Degeneration. J Prev Alzheimers Dis 2022; 9:491-498. [PMID: 35841250 DOI: 10.14283/jpad.2022.27] [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] [Indexed: 06/15/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) and frontotemporal lobar degeneration (FTLD) are heterogeneous in their clinical presentation and underlying pathology, but they often have overlapping features. Diagnostic accuracy is critical for guiding patient management. Cerebrospinal fluid (CSF) diagnostic assays for the differentiation of AD and FTLD may increase diagnostic accuracy. OBJECTIVES In this study, we aimed to understand the potential role of CSF biomarkers and biomarker ratios, measured using Elecsys® CSF immunoassays (Roche Diagnostics International Ltd, Rotkreuz, Switzerland), in the differential diagnosis of AD and FTLD. DESIGN This study was conducted at a single center in Munich, Germany between July 2019 and July 2020. Patient CSF samples were retrospectively collected from the study center biobank. PARTICIPANTS A total of 130 patients with cognitive impairment were included in the study; 86 patients were diagnosed with AD and 44 with FTLD (behavioral variant frontotemporal dementia, semantic variant of primary progressive aphasia, and non-fluent variant of primary progressive aphasia), based on core clinical criteria and a non-CSF biomarker, a typical pattern of regional hypometabolism on [18F] fluorodeoxyglucose positron emission tomography. MEASUREMENTS Patient CSF biomarker concentrations were measured using Elecsys CSF immunoassays. Receiver operating characteristic analyses were conducted to determine areas under the curve (AUCs) for CSF biomarker performance. Sensitivity and specificity analyses were conducted to evaluate the performance of established cut-offs (Aβ42 ≤1000 pg/mL, pTau181/Aβ42 ratio >0.024, and tTau/Aβ42 ratio >0.28) and optimized cut-offs based on Youden's index. RESULTS AUC-based performance was similarly good for the pTau181/Aβ42 ratio (AUC=0.841; 95% CI: 0.759-0.923), pTau181/Aβ40 ratio (AUC=0.837; 95% CI: 0.754-0.919), Aβ42/Aβ40 ratio (AUC=0.829; 95% CI: 0.746-0.912), tTau/Aβ42 ratio (AUC=0.822; 95% CI: 0.736-0.908), pTau181/Aβ42/Aβ40 ratio (AUC=0.817; 95% CI: 0.734-0.901), and Aβ42 (AUC=0.812; 95% CI: 0.722-0.902). Performance was slightly lower for the tTau/Aβ42/Aβ40 ratio (AUC=0.799; 95% CI: 0.713-0.885), pTau181 alone (AUC=0.793; 95% CI: 0.707-0.880), tTau/Aβ40 ratio (AUC=0.751; 95% CI: 0.657-0.844), and tTau alone (AUC=0.706; 95% CI: 0.613-0.799). The highest qualitative performance was observed with the pTau181/Aβ42 ratio with an established cut-off value of >0.024 and optimized cut-off value of >0.022: sensitivity and specificity values were 0.892 and 0.773, respectively. CONCLUSIONS Elecsys CSF immunoassays demonstrate good diagnostic accuracy in differentiating patients with AD from those with FTLD. These immunoassays have the potential to support clinical decision making, i.e. in diagnosing patients with FTLD by excluding patients with amyloid positivity, which is indicative of underlying AD.
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Affiliation(s)
- M Ortner
- Dr Marion Ortner, MD, Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Ismaninger Str. 22, 81675 Munich, Germany; Telephone: +49 89 41404275; Fax: +49 89 41404923;
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Mai V, Trahan S, Pagé S, Simon M, Labbé C. Severe hyponatremia due to paraneoplastic syndrome of inappropriate antidiuretic hormone secretion in non-small cell lung carcinoma transforming to small cell lung carcinoma during treatment with immune checkpoint inhibitor. Current Problems in Cancer: Case Reports 2021. [DOI: 10.1016/j.cpccr.2021.100125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Lang S, Loibl M, Gläsner J, Simon M, Rupp M, Grad S, Neumann C, Alt V, Gessner A, Hanses F. Vertebral osteomyelitis is characterised by increased RANK/OPG and RANKL/OPG expression ratios in vertebral bodies and intervertebral discs. Eur Cell Mater 2021; 42:438-451. [PMID: 34846723 DOI: 10.22203/ecm.v042a27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Vertebral osteomyelitis (VO) is an infection of the spine mainly caused by bacterial pathogens. The pathogenesis leading to destruction of intervertebral discs (IVDs) and adjacent vertebral bodies (VBs) is poorly described. The present study aimed at investigating the connection between infection and bone/disc metabolism in VO patients. 14 patients with VO (infection group) and 14 patients with burst fractures of the spine (fracture group; control) were included prospectively. Tissue biopsies from affected IVDs and adjacent VBs were analysed by RT-qPCR for mRNA-expression levels of 18 target genes including chemokines, adipokines and genes involved in bone metabolism. Most importantly, the receptor activator of NF-κB/osteoprotegerin (RANK/OPG) expression ratio was drastically elevated in both VBs and IVDs of the infection group. In parallel, expression of genes of the prostaglandin-E2-dependent prostanoid system was induced. Such genes regulate tissue degradation processes via the triad OPG/RANK/RANKL as well as via the chemokines IL-8 and CCL-20, whose expression was also found to be increased upon infection. The gene expression of the adipokine leptin, which promotes inflammatory tissue degradation, was higher in IVD tissue of the infection group, whereas the transcription of omentin and resistin genes, whose functions are largely unknown in the context of infectious diseases, was lower in infected VBs. In summary, similar expression patterns of pro-inflammatory cytokines and pro-osteoclastogenic factors were identified in VBs and IVDs of patients suffering from VO. This suggests that common immuno-metabolic pathways are involved in the mechanisms leading to tissue degradation in VBs and IVDs during VO.
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Affiliation(s)
| | - M Loibl
- Department of Trauma Surgery, University Hospital Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg,
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Clement E, Jebbawi R, Oukhrib A, Labie H, Fruchon S, c Turrin, Blanzat M, Poupot R, Simon M. 218 Evaluation of an anti-inflammatory dendrimer to topically treat psoriasis. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cadau S, Gault M, Berthelemy N, Gauché D, Pons C, Leprince C, Andre-Frei V, Simon M, Pain S. 112 A new 3D skin model colonized with bacteria for a better understanding of Atopic Dermatitis. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.115] [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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Li X, Inhester L, Robatjazi SJ, Erk B, Boll R, Hanasaki K, Toyota K, Hao Y, Bomme C, Rudek B, Foucar L, Southworth SH, Lehmann CS, Kraessig B, Marchenko T, Simon M, Ueda K, Ferguson KR, Bucher M, Gorkhover T, Carron S, Alonso-Mori R, Koglin JE, Correa J, Williams GJ, Boutet S, Young L, Bostedt C, Son SK, Santra R, Rolles D, Rudenko A. Pulse Energy and Pulse Duration Effects in the Ionization and Fragmentation of Iodomethane by Ultraintense Hard X Rays. Phys Rev Lett 2021; 127:093202. [PMID: 34506178 DOI: 10.1103/physrevlett.127.093202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 01/24/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
The interaction of intense femtosecond x-ray pulses with molecules sensitively depends on the interplay between multiple photoabsorptions, Auger decay, charge rearrangement, and nuclear motion. Here, we report on a combined experimental and theoretical study of the ionization and fragmentation of iodomethane (CH_{3}I) by ultraintense (∼10^{19} W/cm^{2}) x-ray pulses at 8.3 keV, demonstrating how these dynamics depend on the x-ray pulse energy and duration. We show that the timing of multiple ionization steps leading to a particular reaction product and, thus, the product's final kinetic energy, is determined by the pulse duration rather than the pulse energy or intensity. While the overall degree of ionization is mainly defined by the pulse energy, our measurement reveals that the yield of the fragments with the highest charge states is enhanced for short pulse durations, in contrast to earlier observations for atoms and small molecules in the soft x-ray domain. We attribute this effect to a decreased charge transfer efficiency at larger internuclear separations, which are reached during longer pulses.
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Affiliation(s)
- X Li
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
| | - L Inhester
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - S J Robatjazi
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
| | - B Erk
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - R Boll
- Max Planck Institute for Nuclear Physics, Heidelberg, Germany
- European XFEL, Schenefeld, Germany
| | - K Hanasaki
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - K Toyota
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - Y Hao
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
- Institute of Theoretical Physics and Department of Physics, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - C Bomme
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - B Rudek
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
| | - L Foucar
- Max Planck Institute for Medical Research, Heidelberg, Germany
| | - S H Southworth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
| | - C S Lehmann
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Fachbereich Chemie, Philipps-Universität Marburg, Marburg, Germany
| | - B Kraessig
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
| | - T Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, Paris, France
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, Paris, France
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - K R Ferguson
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - M Bucher
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - T Gorkhover
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Berlin, Germany
| | - S Carron
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - R Alonso-Mori
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - J E Koglin
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - J Correa
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - G J Williams
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
- NSLS-II, Brookhaven National Laboratory, Upton New York, USA
| | - S Boutet
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - L Young
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Department of Physics and James Franck Institute, The University of Chicago, Chicago, Illinois, USA
| | - C Bostedt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Paul Scherrer Institut, Villigen-PSI, Villigen, Switzerland
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - S-K Son
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - R Santra
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
- Department of Physics, Universität Hamburg, Hamburg, Germany
| | - D Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - A Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
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Toigo V, Marcuzzi D, Serianni G, Boldrin M, Chitarin G, Bello SD, Grando L, Luchetta A, Pasqualotto R, Zaccaria P, Zanotto L, Agnello R, Agostinetti P, Agostini M, Antoni V, Aprile D, Barbisan M, Battistella M, Berton G, Bigi M, Brombin M, Candeloro V, Canton A, Casagrande R, Cavallini C, Cavazzana R, Cordaro L, Cruz N, Palma MD, Dan M, De Lorenzi A, Delogu R, De Muri M, Denizeau S, Fadone M, Fellin F, Ferro A, Gaio E, Gasparini F, Gasparrini C, Gnesotto F, Jain P, Krastev P, Lopez-Bruna D, Lorenzini R, Maistrello A, Manduchi G, Manfrin S, Marconato N, Martines E, Martini G, Martini S, Milazzo R, Patton T, Pavei M, Peruzzo S, Pilan N, Pimazzoni A, Poggi C, Pomaro N, Pouradier-Duteil B, Recchia M, Rigoni-Garola A, Rizzolo A, Sartori E, Shepherd A, Siragusa M, Sonato P, Sottocornola A, Spada E, Spagnolo S, Spolaore M, Taliercio C, Terranova D, Tinti P, Tomsič P, Trevisan L, Ugoletti M, Valente M, Vignando M, Zagorski R, Zamengo A, Zaniol B, Zaupa M, Zuin M, Cavenago M, Boilson D, Rotti C, Veltri P, Decamps H, Dremel M, Graceffa J, Geli F, Urbani M, Zacks J, Bonicelli T, Paolucci F, Garbuglia A, Agarici G, Gomez G, Gutierrez D, Kouzmenko G, Labate C, Masiello A, Mico G, Moreno JF, Pilard V, Rousseau A, Simon M, Kashiwagi M, Tobari H, Watanabe K, Maejima T, Kojima A, Oshita E, Yamashita Y, Konno S, Singh M, Chakraborty A, Patel H, Singh N, Fantz U, Bonomo F, Cristofaro S, Heinemann B, Kraus W, Wimmer C, Wünderlich D, Fubiani G, Tsumori K, Croci G, Gorini G, McCormack O, Muraro A, Rebai M, Tardocchi M, Giacomelli L, Rigamonti D, Taccogna F, Bruno D, Rutigliano M, D'Arienzo M, Tonti A, Panin F. On the road to ITER NBIs: SPIDER improvement after first operation and MITICA construction progress. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Liang K, Landsittel D, Li Y, Hope L, Ruffalo L, Peat-Fircak J, Avolio J, Biswas P, Roth E, Simon M, Moreland L. POS0678 DOES SILDENAFIL IMPROVE ENDOTHELIAL DYSFUNCTION IN RHEUMATOID ARTHRITIS? – A PILOT CLINICAL TRIAL. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.4069] [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:Rheumatoid arthritis (RA) is independently associated with an increased risk of cardiovascular disease (CVD). One of the early stages of atherosclerosis is endothelial dysfunction, which is increased in RA. Using drugs to target endothelial dysfunction is a promising novel strategy for CVD prevention in RA. Sildenafil has been shown to improve endothelial function in diabetics, who have similar increased CVD risk. Our hypothesis was that sildenafil use may be a novel primary CVD prevention strategy in RA.Objectives:To determine if sildenafil use in RA patients improves endothelial dysfunction (as measured by brachial artery flow-mediated dilation [FMD] and peripheral arterial tone [PAT]), as well as serum inflammatory and atherosclerosis biomarkers.Methods:This NIH-funded study was a phase II, randomized double-blind placebo-controlled crossover efficacy trial of 25 RA patients, with no known history of CVD, but at least one traditional CVD risk factor. Patients were randomized 1:1 to receive either sildenafil or placebo for 3 months, then after a 2-week washout, crossed over to each respective group for an additional 3 months. Vascular studies (FMD and PAT) and serum atherosclerosis biomarkers (e-Selectin, ICAM-1, VCAM-1) were performed at baseline, 3 months pre- and post-washout, and 6 months. Adverse events were collected. Given the cross-over design, analyses included a random effects model for within-subject comparisons of sildenafil versus placebo periods, adjusting for the baseline (FMD or EndoPAT) within that period and a term for treatment order. All tests were 2-sided with α=0.05.Results:A total of 233 subjects were assessed for eligibility, with 25 subjects being randomized after written informed consent. A total of 13 subjects were randomized to placebo first, and 12 to sildenafil first. Baseline characteristics were similar between those randomized to Placebo vs. Sildenafil first. Mean age was 62.0+/-10.9 years; 84% were female; and 92% were white. A total of 6 adverse events experienced in 3 subjects occurred. The primary endpoint (increase in %FMD in Sildenafil period vs. Placebo period) was not significant (p=0.19). However, note the study was powered at 80% to detect an effect size of 0.37 for change in %FMD or biomarker with a sample size of 60, not 25. However, sildenafil use was associated with a significant increase (improvement) by 0.200 units of PAT ratio (p=0.003) compared with placebo, adjusted by treatment order and baseline PAT ratio (within the given treatment period). Exploratory linear mixed models comparing e-Selectin, ICAM-1, and VCAM-1 between Sildenafil vs. Placebo periods, adjusted for treatment order and the baseline biomarker level, did not show any significant differences except for ICAM-1 (55.3 units higher in Sildenafil vs. Placebo periods, p=0.011).Conclusion:In this pilot trial of 25 RA subjects, sildenafil use was associated with a significant increase (improvement) in endothelial function as measured by PAT. However, there was no significant difference in FMD. The study is limited due to the small sample size, which was impacted by slow recruitment as well as the COVID-19 pandemic. Future larger studies are required to assess whether other PDE5 inhibitors may improve endothelial dysfunction in RA and other autoimmune disease patients at high risk of CVD.References:[1]Maradit-Kremers H, Crowson CS, Nicola PJ, et al. Increased unrecognized coronary heart disease and sudden deaths in rheumatoid arthritis: a population-based cohort study. Arthritis Rheum 2005;52:402-11.[2]Peters MJ, van Halm VP, Voskuyl AE, et al. Does rheumatoid arthritis equal diabetes mellitus as an independent risk factor for cardiovascular disease? A prospective study. Arthritis Rheum 2009;61:1571-9.[3]Deyoung L, Chung E, Kovac JR, et al. Daily use of sildenafil improves endothelial function in men with type 2 diabetes. J Andrology 2012;33:176-80.Disclosure of Interests:None declared
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Simon M, Morell-Dubois S, Venturelli G, Launay D. Atteinte digestive diagnostiquée par une vidéocapsule au cours d’une granulomatose éosinophilique avec polyangéite. Rev Med Interne 2021. [DOI: 10.1016/j.revmed.2021.03.181] [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: 10/21/2022]
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Koulentianos D, Carniato S, Püttner R, Martins JB, Travnikova O, Marchenko T, Journel L, Guillemin R, Ismail I, Céolin D, Piancastelli MN, Feifel R, Simon M. The O K -2V spectrum of CO: the influence of the second core-hole. Phys Chem Chem Phys 2021; 23:10780-10790. [PMID: 33908498 DOI: 10.1039/d1cp00607j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using synchrotron radiation in the tender X-ray regime, a photoelectron spectrum showing the formation of single site double-core-hole pre-edge states, involving the K shell of the O atom in CO, has been recorded by means of high-resolution electron spectroscopy. The experimentally observed structures have been simulated, interpreted and assigned, employing state-of-the-art ab initio quantum chemical calculations, on the basis of a theoretical model, accounting for their so-called direct or conjugate character. Features appearing above the double ionization threshold have been reproduced by taking into account the strong mixing between multi-excited and continuum states. The shift of the σ* resonance below the double ionization threshold, in combination with the non-negligible contributions of multi-excited configurations in the final states reached, gives rise to a series of avoided crossings between the different potential energy curves.
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Affiliation(s)
- D Koulentianos
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
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Garry J, Kolaitis N, Kime N, Kronmal R, Chikinala M, Thenappan T, Grinnan D, Horn E, Hemnes A, Simon M, Bull T, De Marco T. The Relationship between Anticoagulation and Mortality in Pulmonary Arterial Hypertension: The Pulmonary Hypertension Association Registry (PHAR). J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.347] [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: 11/27/2022] Open
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Pan K, Nelson R, Mullooly M, Simon M, Mortimer J, Rohan T, Wactawski-Wende J, Lane D, Manson J, Chlebowski R, Kruper L. Ductal carcinoma in situ (DCIS) and breast cancer-specific and all-cause mortality among postmenopausal women in the Women’s Health Initiative. Breast 2021. [DOI: 10.1016/s0960-9776(21)00224-1] [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: 11/27/2022] Open
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Moreau J, Hammoudi N, Marthey L, Trang-Poisson C, Nachury M, Altwegg R, Grimaud JC, Orempuller S, Hébuterne X, Aubourg A, Baudry C, Seksik P, Roblin X, Nahon S, Savoye G, Mesnard B, Stefanescu C, Simon M, Coffin B, Fumery M, Carbonnel F, Peyrin-Biroulet L, Desseaux K, Allez M. Impact of an Education Programme on IBD Patients' Skills: Results of a Randomised Controlled Multicentre Study [ECIPE]. J Crohns Colitis 2021; 15:432-440. [PMID: 32969469 DOI: 10.1093/ecco-jcc/jjaa195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Better patient knowledge on inflammatory bowel disease [IBD] could improve outcome and quality of life. The aim of this study was to assess if an education programme improves IBD patients' skills as regards their disease. METHODS The GETAID group conducted a prospective multicentre randomised controlled study. IBD patients were included at diagnosis, or after a significant event in the disease course. Patients were randomised between 'educated' or control groups for 6 months. Education was performed by trained health care professionals. A psycho-pedagogic score [ECIPE] was evaluated by a 'blinded' physician at baseline and after 6 and 12 months [M6 and M12]. The primary endpoint was the increase of ECIPE score at M6 of more than 20%. RESULTS A total of 263 patients were included in 19 centres (male:40%; median age:30.8; Crohn's disease [CD]:73%). Of these, 133 patients were randomised into the educated group and 130 into the control group. The median relative increase in ECIPE score at M6 was higher in the educated group as compared with the control group (16.7% [0-42.1%] vs 7% [0-18.8%], respectively, p = 0.0008). The primary endpoint was met in 46% vs 24% of the patients in the educated and control groups, respectively [p = 0.0003]. A total of 92 patients met the primary endpoint. In multivariate analysis, predictors of an increase of at least 20% of the ECIPE score were randomisation in the educated group (odds ratio [OR] = 2.59) and no previous surgery [OR = 1.92]. CONCLUSIONS These findings support the set-up of education programmes in centres involved in the management of IBD patients.
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Affiliation(s)
- J Moreau
- Gastroenterology Department, Hôpital Rangueil, Toulouse, France
| | - N Hammoudi
- Gastroenterology Department, APHP, Hôpital Saint-Louis, INSERM UMRS 1160, Université Paris Diderot, Sorbonne Paris-Cité University, Paris, France
| | - L Marthey
- Gastroenterology Department, Hôpital du Kremlin-Bicetre, Kremlin Bicetre, France
| | | | - M Nachury
- CHU Lille, Maladies de l'appareil digestif, Lille, France
| | - R Altwegg
- Gastroenterology Department, Hôpital St-Eloi, Montpellier, France
| | - J C Grimaud
- Gastroenterology Department, Hôpital Nord, Marseille, France
| | - S Orempuller
- Gastroenterology Department, Hôpital Rangueil, Toulouse, France
| | - X Hébuterne
- Gastroenterology Department, Hôpital Archet, Nice, France
| | - A Aubourg
- Gastroenterology Department, Hôpital Trousseau, Tours, France
| | - C Baudry
- Gastroenterology Department, APHP, Hôpital Saint-Louis, INSERM UMRS 1160, Université Paris Diderot, Sorbonne Paris-Cité University, Paris, France
| | - P Seksik
- Department of Gastroenterology, Centre de recherche Saint-Antoine, Sorbonne Université, APHP, Hôpital Saint-Antoine, Paris, France
| | - X Roblin
- Gastroenterology Department, Hôpital de St-Etienne, St-Etienne, France
| | - S Nahon
- Gastroenterology Department, Hôpital de Montfermeil, Montfermeil, France
| | - G Savoye
- Gastroenterology Department, Hôpital Charles Nicolle, Rouen, France
| | - B Mesnard
- Gastroenterology Department, Hôpital Dron, Tourcoing, France
| | - C Stefanescu
- Gastroenterology Department, Hôpital Beaujon, Clichy, France
| | - M Simon
- Gastroenterology Department, Institut Mutualiste Monsouris, Paris, France
| | - B Coffin
- Gastroenterology Department, Hôpital Louis Mourier, Colombes, France
| | - M Fumery
- Gastroenterology Department, Hôpital Nord, Amiens, France
| | - F Carbonnel
- Gastroenterology Department, Hôpital du Kremlin-Bicetre, Kremlin Bicetre, France
| | - L Peyrin-Biroulet
- Department of Gastroenterology, University Hospital of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - K Desseaux
- SBIM, Hôpital Saint-Louis, Paris, France
| | - M Allez
- Gastroenterology Department, APHP, Hôpital Saint-Louis, INSERM UMRS 1160, Université Paris Diderot, Sorbonne Paris-Cité University, Paris, France
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Berthelot S, Breton M, Guertin JR, Archambault PM, Berger Pelletier E, Blouin D, Borgundvaag B, Duhoux A, Harvey Labbé L, Laberge M, Lachapelle P, Lapointe-Shaw L, Layani G, Lefebvre G, Mallet M, Matthews D, McBrien K, McLeod S, Mercier E, Messier A, Moore L, Morris J, Morris K, Ovens H, Pageau P, Paquette JS, Perry J, Schull M, Simon M, Simonyan D, Stelfox HT, Talbot D, Vaillancourt S. A Value-Based Comparison of the Management of Ambulatory Respiratory Diseases in Walk-in Clinics, Primary Care Practices, and Emergency Departments: Protocol for a Multicenter Prospective Cohort Study. JMIR Res Protoc 2021; 10:e25619. [PMID: 33616548 PMCID: PMC7939947 DOI: 10.2196/25619] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND In Canada, 30%-60% of patients presenting to emergency departments are ambulatory. This category has been labeled as a source of emergency department overuse. Acting on the presumption that primary care practices and walk-in clinics offer equivalent care at a lower cost, governments have invested massively in improving access to these alternative settings in the hope that patients would present there instead when possible, thereby reducing the load on emergency departments. Data in support of this approach remain scarce and equivocal. OBJECTIVE The aim of this study is to compare the value of care received in emergency departments, walk-in clinics, and primary care practices by ambulatory patients with upper respiratory tract infection, sinusitis, otitis media, tonsillitis, pharyngitis, bronchitis, influenza-like illness, pneumonia, acute asthma, or acute exacerbation of chronic obstructive pulmonary disease. METHODS A multicenter prospective cohort study will be performed in Ontario and Québec. In phase 1, a time-driven activity-based costing method will be applied at each of the 15 study sites. This method uses time as a cost driver to allocate direct costs (eg, medication), consumable expenditures (eg, needles), overhead costs (eg, building maintenance), and physician charges to patient care. Thus, the cost of a care episode will be proportional to the time spent receiving the care. At the end of this phase, a list of care process costs will be generated and used to calculate the cost of each consultation during phase 2, in which a prospective cohort of patients will be monitored to compare the care received in each setting. Patients aged 18 years and older, ambulatory throughout the care episode, and discharged to home with one of the aforementioned targeted diagnoses will be considered. The estimated sample size is 1485 patients. The 3 types of care settings will be compared on the basis of primary outcomes in terms of the proportion of return visits to any site 3 and 7 days after the initial visit and the mean cost of care. The secondary outcomes measured will include scores on patient-reported outcome and experience measures and mean costs borne wholly by patients. We will use multilevel generalized linear models to compare the care settings and an overlap weights approach to adjust for confounding factors related to age, sex, gender, ethnicity, comorbidities, registration with a family physician, socioeconomic status, and severity of illness. RESULTS Phase 1 will begin in 2021 and phase 2, in 2023. The results will be available in 2025. CONCLUSIONS The end point of our program will be for deciders, patients, and care providers to be able to determine the most appropriate care setting for the management of ambulatory emergency respiratory conditions, based on the quality and cost of care associated with each alternative. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/25619.
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Affiliation(s)
- Simon Berthelot
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Department of Family and Emergency Medicine, Université Laval, Québec, QC, Canada
| | - Mylaine Breton
- Department of Community Health sciences, Université de Sherbrooke, Campus de Longueuil, Longueuil, QC, Canada
- Centre de recherche Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, Longueuil, QC, Canada
| | - Jason Robert Guertin
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Department of Social and Preventive Medicine, Université Laval, Québec, QC, Canada
| | - Patrick Michel Archambault
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Department of Family and Emergency Medicine, Université Laval, Québec, QC, Canada
- VITAM - Centre de recherche en santé durable, Québec, QC, Canada
- Centre de recherche du Centre intégré de santé et de services sociaux de Chaudière-Appalaches, Lévis, QC, Canada
| | - Elyse Berger Pelletier
- Ministère de la santé et des services sociaux, Gouvernement du Québec, Québec, QC, Canada
| | - Danielle Blouin
- Department of Emergency Medicine, Queen's University, Kingston, ON, Canada
| | - Bjug Borgundvaag
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
- Schwartz/Reisman Emergency Medicine Institute, Sinai Health System, Toronto, ON, Canada
| | - Arnaud Duhoux
- Faculty of Nursing, Université de Montréal, Montréal, QC, Canada
| | - Laurie Harvey Labbé
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Maude Laberge
- Operations and Decision Systems Department, Faculty of Administrative Sciences, Université Laval, Québec, QC, Canada
| | - Philippe Lachapelle
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | | | - Géraldine Layani
- Department of Family and Emergency Medicine, Université de Montréal, Montréal, QC, Canada
| | - Gabrielle Lefebvre
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Myriam Mallet
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Deborah Matthews
- Ministry of Health and Long Term Care, Government of Ontario, Toronto, ON, Canada
| | - Kerry McBrien
- Departments of Family Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Shelley McLeod
- Schwartz/Reisman Emergency Medicine Institute, Sinai Health System, Toronto, ON, Canada
- Division of Emergency Medicine, Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
| | - Eric Mercier
- Department of Family and Emergency Medicine, Université Laval, Québec, QC, Canada
| | - Alexandre Messier
- Department of Family and Emergency Medicine, Université de Montréal, Montréal, QC, Canada
| | - Lynne Moore
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Department of Social and Preventive Medicine, Université Laval, Québec, QC, Canada
| | - Judy Morris
- Department of Family and Emergency Medicine, Université de Montréal, Montréal, QC, Canada
- Hôpital du Sacré-Coeur-de-Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de Montréal, Montréal, QC, Canada
| | - Kathleen Morris
- Canadian Institute for Health Information, Ottawa, ON, Canada
| | - Howard Ovens
- Schwartz/Reisman Emergency Medicine Institute, Sinai Health System, Toronto, ON, Canada
| | - Paul Pageau
- Department of Emergency Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Jean-Sébastien Paquette
- Department of Family and Emergency Medicine, Université Laval, Québec, QC, Canada
- VITAM - Centre de recherche en santé durable, Québec, QC, Canada
- Laboratoire ARIMED, GMF-U de Saint-Charles-Borromée, Québec, QC, Canada
| | - Jeffrey Perry
- Department of Emergency Medicine, University of Ottawa, Ottawa, ON, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Michael Schull
- Department of Emergency Medicine, Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
| | - Mathieu Simon
- Institut universitaire de cardiologie et de pneumologie de Québec, Québec, QC, Canada
| | - David Simonyan
- Axe Santé des populations et Pratiques optimales en santé, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Henry Thomas Stelfox
- Department of Critical Care Medicine, Medicine and Community Health Sciences, O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Denis Talbot
- Department of Social and Preventive Medicine, Université Laval, Québec, QC, Canada
| | - Samuel Vaillancourt
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Emergency Medicine, St Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
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Simon M, Csiki E, Papp J, Solymosi D, Kovács Á. PO-1661: Treatment setup errors in cranial SRT patients with non-invasive immobilization technique. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01679-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Traylor J, Simon M, Tsai S, Feinglass J. Patient and Hospital Characteristics Associated with Minimally Invasive Hysterectomy. Evidence from 143 Illinois Hospitals, 2016-2018. J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.375] [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: 10/23/2022]
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Albérola G, Froment C, Simon M. La filaggrine-2 est un composant des enveloppes cornées : une explication du peeling skin syndrome de type 6. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.08.024] [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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Alioli C, Cau L, Yang H, Gairin M, Goudounèche D, Simon M, Méchin M. L’extinction de PAD1 altère la barrière épidermique et perturbe la nucléophagie kératinocytaire. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fatima S, Lambert W, Nouraie S, Simon M, Pacella J. Bedside ultrasound assessments of jugular venous compliance to track central venous pressure change during the treatment of decompensated heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1220] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Accurate volume status assessment is crucial for the treatment of acute decompensated heart failure (ADHF). Volume status assessment by physical exam is inaccurate, necessitating invasive measurement with right heart catheterization (RHC), which carries safety, pragmatic (scheduling, holding anticoagulants, etc) and financial burdens. Therefore, a reliable, non-invasive, cost-effective alternative is desired. Previously, we developed an ultrasound (US) based technique to measure internal jugular vein (IJV) compliance during RHC which was used for single time point central venous pressure (CVP) predictions. We now aim to apply this technique to track acute changes in CVP during diuresis for ADHF in patients with an in-dwelling pulmonary artery catheter.
Purpose
The objective of our study was to devise a rapid, portable and reliable alternative to RHC to track acute volume changes during treatment of ADHF.
Methods
We used an observational, prospective study design and recruited 15 patients from the CCU between 7/19–12/19 being treated for ADHF (systolic or diastolic) with IV diuretics +/−inotropic agents who underwent PA catheter insertion for continuous CVP monitoring. 13 of 15 patients received milrinone infusions. US images of the IJV were obtained at end expiration and during the strain phase of Valsalva at multiple 2–3 hr intervals. Change in IJV cross sectional area (ImageJ) was used as a measure of IJV compliance. Patients unable to perform the Valsalva maneuver and on mechanical circulatory support were excluded.
Results
Calculated % change in CSA of IJV was plotted against CVP. An inverse relationship was observed between CVP and % change in CSA of IJV. The data was fit with an inverse exponential regression shown in Figure 1 (R2=0.36, root mean square error = 3.19). Fivefold cross validation showed a stable model for predicting CVP based CSA (R2=0.34, root mean square error = 3.26)
Conclusion
Serial portable US assessment of IJV compliance can act a surrogate measure of CVP and,therefore, can provide reliable information on acute hemodynamic changes in ADHF.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Fatima
- University of Pittsburgh Medical Center, McKeesport, United States of America
| | - W Lambert
- University of Connecticut, Farmington, United States of America
| | - S Nouraie
- University of Pittsburgh, Pulmonology and Critical Care, Pittsburgh, United States of America
| | - M Simon
- University of Pittsburgh, Cardiology, Pittsburgh, United States of America
| | - J Pacella
- University of Pittsburgh, Cardiology, Pittsburgh, United States of America
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Chantalat L, Simon M, Fourgeaud C, Vignes S. [Puffy hand syndrome: A little-known diagnosis]. Rev Med Interne 2020; 41:700-703. [PMID: 32674894 DOI: 10.1016/j.revmed.2020.05.020] [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: 02/05/2020] [Revised: 05/05/2020] [Accepted: 05/21/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Puffy hand syndrome is a rare complication of intravenous drug addiction. Diagnosis is based on the patient's history and clinical examination. OBSERVATIONS A woman and two men, aged 42, 39 and 36 years old, are described. All had a history of intravenous drug use of heroin and oral buprenorphine misuse. Puffy hand syndrome appeared during drug addiction (n = 2) or after its withdrawal (n = 1). It was associated with acrocyanosis (n = 1) or injection scars (n = 1). Upper limb ultrasonography showed sequelae of venous (n = 3) or arterial (n = 1) thrombosis. An upper limb lymphoscintigraphy in one patient showed decreased radionuclide uptake of axillary lymph node and subdermal reflux tracer in the forearm. Treatment was based on low-stretch bandages to reduce the volume and then elastic compression sleeve for long-term stabilization. CONCLUSION Puffy hand syndrome seen in intravenous drug addicts is poorly understood. It is a chronic complication despite the cessation of drug use. This syndrome has to become more widely known because its management is mandatory, although symptomatic.
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Affiliation(s)
- L Chantalat
- Unité de Lymphologie, Site constitutif du Centre national de référence des maladies vasculaires rares (lymphœdèmes primaires), Hôpital Cognacq-Jay, 15 rue Eugène Millon, 75015 Paris, France
| | - M Simon
- Unité de Lymphologie, Site constitutif du Centre national de référence des maladies vasculaires rares (lymphœdèmes primaires), Hôpital Cognacq-Jay, 15 rue Eugène Millon, 75015 Paris, France
| | - C Fourgeaud
- Unité de Lymphologie, Site constitutif du Centre national de référence des maladies vasculaires rares (lymphœdèmes primaires), Hôpital Cognacq-Jay, 15 rue Eugène Millon, 75015 Paris, France
| | - S Vignes
- Unité de Lymphologie, Site constitutif du Centre national de référence des maladies vasculaires rares (lymphœdèmes primaires), Hôpital Cognacq-Jay, 15 rue Eugène Millon, 75015 Paris, France.
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Abdenur JE, Sowa M, Simon M, Steenari M, Skaar J, Eftekharian S, Chang R, Ferdinandusse S, Pitt J. Medical nutrition therapy in patients with HIBCH and ECHS1 defects: Clinical and biochemical response to low valine diet. Mol Genet Metab Rep 2020; 24:100617. [PMID: 32642440 PMCID: PMC7334802 DOI: 10.1016/j.ymgmr.2020.100617] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/13/2020] [Accepted: 06/14/2020] [Indexed: 01/30/2023] Open
Affiliation(s)
- J E Abdenur
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA.,Department of Pediatrics, University of California Irvine, Orange, CA. USA
| | - M Sowa
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA
| | - M Simon
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA
| | - M Steenari
- Division of Neurology, CHOC Children's. Orange, CA, USA.,Department of Pediatrics, University of California Irvine, Orange, CA. USA
| | - J Skaar
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA
| | - S Eftekharian
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA
| | - R Chang
- Division of Metabolic Disorders, CHOC Children's, Orange, CA, USA.,Department of Pediatrics, University of California Irvine, Orange, CA. USA
| | - S Ferdinandusse
- Departments of Clinical Chemistry and Pediatrics, Laboratory Genetic Metabolic Diseases, Amsterdam, the Netherlands
| | - J Pitt
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, AU, Australia
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Santillan MR, Savage K, Porter M, Parker R, Simon M, Kimball A. 430 Crohn's disease prevalence prior to and following hidradenitis suppurativa diagnosis. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kjellsson L, Nanda KD, Rubensson JE, Doumy G, Southworth SH, Ho PJ, March AM, Al Haddad A, Kumagai Y, Tu MF, Schaller RD, Debnath T, Bin Mohd Yusof MS, Arnold C, Schlotter WF, Moeller S, Coslovich G, Koralek JD, Minitti MP, Vidal ML, Simon M, Santra R, Loh ZH, Coriani S, Krylov AI, Young L. Resonant Inelastic X-Ray Scattering Reveals Hidden Local Transitions of the Aqueous OH Radical. Phys Rev Lett 2020; 124:236001. [PMID: 32603165 DOI: 10.1103/physrevlett.124.236001] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/01/2020] [Accepted: 05/22/2020] [Indexed: 05/06/2023]
Abstract
Resonant inelastic x-ray scattering (RIXS) provides remarkable opportunities to interrogate ultrafast dynamics in liquids. Here we use RIXS to study the fundamentally and practically important hydroxyl radical in liquid water, OH(aq). Impulsive ionization of pure liquid water produced a short-lived population of OH(aq), which was probed using femtosecond x-rays from an x-ray free-electron laser. We find that RIXS reveals localized electronic transitions that are masked in the ultraviolet absorption spectrum by strong charge-transfer transitions-thus providing a means to investigate the evolving electronic structure and reactivity of the hydroxyl radical in aqueous and heterogeneous environments. First-principles calculations provide interpretation of the main spectral features.
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Affiliation(s)
- L Kjellsson
- Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden
| | - K D Nanda
- Department of Chemistry, University of Southern California, Los Angeles, California 90007, USA
| | - J-E Rubensson
- Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden
| | - G Doumy
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - S H Southworth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - P J Ho
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A M March
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A Al Haddad
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Y Kumagai
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M-F Tu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - R D Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
| | - T Debnath
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 639798
| | - M S Bin Mohd Yusof
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 639798
| | - C Arnold
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
- Department of Physics, Universität Hamburg, 20146 Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, 22607 Hamburg, Germany
| | - W F Schlotter
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Moeller
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - G Coslovich
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J D Koralek
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M P Minitti
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M L Vidal
- DTU Chemistry-Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - M Simon
- Sorbonne Université and CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 75252 Paris Cedex 05, France
| | - R Santra
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
- Department of Physics, Universität Hamburg, 20146 Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, 22607 Hamburg, Germany
| | - Z-H Loh
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 639798
| | - S Coriani
- DTU Chemistry-Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - A I Krylov
- Department of Chemistry, University of Southern California, Los Angeles, California 90007, USA
| | - L Young
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Department of Physics and James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
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Lutter C, Tischer T, Hotfield T, Frank L, Enz A, Simon M, Schoffl V. Current Trends in Sport Climbing Injuries after the Inclusion into the Olympic Program. Analysis of 633 Injuries within the years 2017/18. Muscles Ligaments Tendons J 2020. [DOI: 10.32098/mltj.02.2020.06] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C. Lutter
- Department of Orthopedics, University Medical Center, Rostock, Germany
| | - T. Tischer
- Department of Orthopedics, University Medical Center, Rostock, Germany
| | - T. Hotfield
- Department of Orthopedics, University Medical Center, Erlangen, Germany
| | - L. Frank
- Department of Trauma Surgery, Friedrich Alexander University Erlangen-Nuremberg, Germany
| | - A. Enz
- Department of Orthopedics, University Medical Center, Rostock, Germany
| | - M. Simon
- Department of Sports Orthopedics, Sports Medicine, Sports Traumatology, Klinikum Bamberg, Germany
| | - V. Schoffl
- Department of Trauma Surgery, Friedrich Alexander University Erlangen-Nuremberg, Germany
- Department of Sports Orthopedics, Sports Medicine, Sports Traumatology, Klinikum Bamberg, Germany
- Section of Wilderness Medicine, Department of Emergency Medicine, University of Colorado School of Medicine, Denver, USA
- School of Clinical and Applied Sciences, Leeds Becket University, Leeds, UK
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Kocher A, Simon M, Chizzolini C, Distler O, Dwyer AA, Villiger P, Walker U, Nicca D. SAT0652-HPR CHRONIC DISEASE MANAGEMENT AND HEALTH TECHNOLOGY READINESS OF PATIENTS WITH SYSTEMIC SCLEROSIS IN SWITZERLAND – A CROSS-SECTIONAL STUDY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3232] [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
Background:People living with systemic sclerosis (SSc) often lack access to coordinated, specialized care and self-management support from qualified healthcare professionals. Such gaps lead to significant unmet health needs and inability to get preventive services. The Chronic Care Model (CCM) has been used to guide disease management across a wide range of chronic conditions. The CCM often uses e-health technologies to address self-management problems, connect patients with clinicians and reduce patient travel requirements.Objectives:To evaluate current SSc care practice patterns and elicit patient health technology readiness to define relevant aspects and resources needed to improve SSc chronic disease management.Methods:We employed a cross-sectional survey using the 20-item Patient Assessment of Chronic Illness Care (PACIC) instrument to assess how aspects of SSc care align with key components of the CCM.1Six items drawn from the ‘5A’ (ask, advise, agree, assist, and arrange) model of behavioural counselling were included (all 26 items scored on 5-point scale, 1=never to 5=always). Acceptance of health technology was evaluated by adapting and combining questionnaires from Vanhoof2and Halwas3. German and French speaking SSc patients (>18 years) were recruited from university/cantonal hospitals and the Swiss scleroderma patients’ association. Participants completed anonymous paper/online questionnaires. Data were analysed descriptively.Results:Of 101 SSc patients, most were female (76%), spoke German (78%) and had a median age of 60 years (IQR: 50-68). Median disease duration was 8 years (IQR: 5-15), spanning a range of severity (31% limited SSc, 36% diffuse SSc, 3% overlap syndrome). One-quarter (25%) did not know their disease subset.The mean overall PACIC score was relatively low (2.91±0.95) indicating that care was ‘never’ to ‘generally not’ aligned with the CCM. Lowest mean subscale scores related to Follow-up/ Coordination (2.64±1.02), Goal setting (2.68±1.07) and Problem-solving/Contextual Counselling (2.94±1.22). The single items ‘Given a copy of my treatment plan’ (1.99±1.38) and ‘Encouraged to attend programs in the community’ (1.89±1.16) were given the lowest ratings. The ‘5A’ summary score was 2.84±0.97.In terms of technology readiness, 43% completed the survey online. Most participants owned a smartphone (81%), laptop (63%) and/or desktop computer (46%). The overwhelming majority of patients (91%) reported using the Internet in the last year – primarily for communication (e.g. emails, text messages). Participants indicated relatively little experience with e-health applications and participating in SSc online forums or self-help groups.Conclusion:To improve chronic disease management of SSc patients in Switzerland, current care practices warrant reengineering taking CCM components into account. Specific unmet needs relate to self-management support, help patients set individualized goals, and coordinate continuous care. Web-based technologies incorporating user-centred design principles may be a reasonable option for improving care.References:[1]Glasgow, RE, et al. Development and validation of the Patient Assessment of Chronic Illness Care (PACIC).Med Care2005; 43(5): 436-44[2]Vanhoof, JM, et al. Technology Experience of Solid Organ Transplant Patients and Their Overall Willingness to Use Interactive Health Technology. J Nurs Scholarsh2018; 50(2): 151-62[3]Halwas, N, et al. eHealth literacy, Internet and eHealth service usage: a survey among cancer patients and their relatives. J Cancer Res Clin Oncol2017; 143(11): 2291-99Disclosure of Interests:Agnes Kocher Grant/research support from: Sandoz to support the development of an eLearning module for patients with rheumatic diseases., Michael Simon: None declared, Carlo Chizzolini Consultant of: Boehringer Ingelheim, Roche, Oliver Distler Grant/research support from: Grants/Research support from Actelion, Bayer, Boehringer Ingelheim, Competitive Drug Development International Ltd. and Mitsubishi Tanabe; he also holds the issued Patent on mir-29 for the treatment of systemic sclerosis (US8247389, EP2331143)., Consultant of: Consultancy fees from Actelion, Acceleron Pharma, AnaMar, Bayer, Baecon Discovery, Blade Therapeutics, Boehringer, CSL Behring, Catenion, ChemomAb, Curzion Pharmaceuticals, Ergonex, Galapagos NV, GSK, Glenmark Pharmaceuticals, Inventiva, Italfarmaco, iQvia, medac, Medscape, Mitsubishi Tanabe Pharma, MSD, Roche, Sanofi and UCB, Speakers bureau: Speaker fees from Actelion, Bayer, Boehringer Ingelheim, Medscape, Pfizer and Roche, Andrew A. Dwyer: None declared, Peter Villiger Consultant of: MSD, Abbvie, Roche, Pfizer, Sanofi, Speakers bureau: Roche, MSD, Pfizer, Ulrich Walker Grant/research support from: Ulrich Walker has received an unrestricted research grant from Abbvie, Consultant of: Ulrich Walker has act as a consultant for Abbvie, Actelion, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, MSD, Novartis, Pfizer, Phadia, Roche, Sandoz, Sanofi, and ThermoFisher, Paid instructor for: Abbvie, Novartis, and Roche, Speakers bureau: Abbvie, Actelion, Bristol-Myers Squibb, Celgene, MSD, Novartis, Pfizer, Phadia, Roche, Sandoz, and ThermoFisher, Dunja Nicca: None declared
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Kocher A, Ndosi M, Hoeper K, Simon M, Nicca D. THU0623-HPR REVISION AND VALIDATION OF THE GERMAN VERSION OF THE SYSTEMIC SCLEROSIS QUALITY OF LIFE QUESTIONNAIRE (SSCQOL) WITH MOKKEN SCALE ANALYSIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1156] [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:The Systemic Sclerosis Quality of Life Questionnaire (SScQoL) has been validated in six European languages.1Previous adaptation into German revealed issues with the dichotomous response structure in 10 items necessitating a review of the tool and further psychometric testing with patients in German speaking countries.Objectives:The aim of this study was to assess the German version of the SScQoL, extend the response structure and test its construct validity using Mokken scale analysis.Methods:This was a mixed methods study involving cognitive debriefing and survey methods. The expert committee extended the response structure of the 10 items from dichotomous to polytomous (4-point) responses: ‘always’, ‘usually’, ‘sometimes’ and ‘never’. In cognitive debriefing, a small convenience sample of patients with SSc completed the new version while ‘thinking aloud’ and commented on relevance of the items and the response structure.Results:In cognitive debriefing, six patients with SSc completed the new German SScQoL and reported problems with the remaining dichotomous items. These were subsequently converted into polytomous 4-point response structure by the expert committee.Conclusion:The German SScQoL has been revised into polytomous item structure and shown to be a valid and reliable measure of health-related quality of life in SSc. Further cross-cultural validity tests are required to assess its measurement equivalence with other SScQoL versions and thus enable multinational comparisons.References:[1]Ndosi M, Alcacer-Pitarch B, Allanore Y et al. Common measure of quality of life for people with systemic sclerosis across seven European countries: a cross-sectional study. Ann Rheum Dis, 2018; 77: 1032-1038Table 1.Mokken scale analysis of the revised German SScQoLSubscale (items)Scalability (H)Standard errorFunction (6)0.6640.048Emotional (13)0.6520.060Sleep (2)0.7980.061Social (6)0.6920.053Pain (2)0.9600.029Global scale (29)0.6230.062Table legend: scalabilityH≥ 0.50 = strong, 0.49 to 0.40 = moderate, 0.39 to 0.30 = weak, while values of < 0.30 are not considered as unidimensional.Disclosure of Interests:Agnes Kocher Grant/research support from: Sandoz to support the development of an eLearning module for patients with rheumatic diseases., Mwidimi Ndosi Grant/research support from: Bristol Myers Squibb, Consultant of: Janssen, Pfizer, Kirsten Hoeper Consultant of: AbbVie, Celgene,, Speakers bureau: Abbvie, Chugai, Novartis, Lilly, Celgene, Sandoz Hexal, Michael Simon: None declared, Dunja Nicca: None declared
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