404 results on '"Markus Weber"'
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2. <scp>INEOS</scp> Phenol Cumene Chemistry (Case Study)
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Ralf Bonmann, Manfred Weber, and Markus Weber
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- 2023
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3. Effect of Dopants and Gas-Phase Composition on Ionization Behavior and Efficiency in Dielectric Barrier Discharge Ionization
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Markus Weber, Jan-Christoph Wolf, and Christoph Haisch
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Structural Biology ,Spectroscopy - Published
- 2023
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4. Cannabinoids to Improve Health-Related Quality of Life in Patients with Neurological or Oncological Disease: A Meta-Analysis
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Vera Belgers, Jantine G. Röttgering, Linda Douw, Martin Klein, Johannes C.F. Ket, Peter M. van de Ven, Thomas Würdinger, Myra E. van Linde, Johanna M. Niers, Markus Weber, Marcel G. Olde Rikkert, Jose Lopez-Sendon, Oscar Arrieta, Kristina B. Svendsen, Marcos H.N. Chagas, Carlos M.O. de Almeida, Mathilde C.M. Kouwenhoven, and Philip C. de Witt Hamer
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Pharmacology ,All institutes and research themes of the Radboud University Medical Center ,Alzheimer`s disease Donders Center for Medical Neuroscience [Radboudumc 1] ,Complementary and alternative medicine ,Pharmacology (medical) - Abstract
Contains fulltext : 291174.pdf (Publisher’s version ) (Open Access) Background: Cannabinoids have been suggested to alleviate frequently experienced symptoms of reduced mental well-being such as anxiety and depression. Mental well-being is an important subdomain of health-related quality of life (HRQoL). Reducing symptoms and maintaining HRQoL are particularly important in malignant primary brain tumor patients, as treatment options are often noncurative and prognosis remains poor. These patients frequently report unprescribed cannabinoid use, presumably for symptom relieve. As studies on brain tumor patients specifically are lacking, we performed a meta-analysis of the current evidence on cannabinoid efficacy on HRQoL and mental well-being in oncological and neurological patients. Methods: We performed a systematic PubMed, PsychINFO, Embase, and Web of Science search according to PRISMA guidelines on August 2 and 3, 2021. We included randomized controlled trials (RCTs) that assessed the effects of tetrahydrocannabinol (THC) or cannabidiol (CBD) on general HRQoL and mental well-being. Pooled effect sizes were calculated using Hedges g. Risk of bias of included studies was assessed using Cochrane's Risk of Bias tool. Results: We included 17 studies: 4 in oncology and 13 in central nervous system (CNS) disease. Meta-analysis showed no effect of cannabinoids on general HRQoL (g=-0.02 confidence interval [95% CI -0.11 to 0.06]; p=0.57) or mental well-being (g=-0.02 [95% CI -0.16 to 0.13]; p=0.81). Conclusions: RCTs in patients with cancer or CNS disease showed no effect of cannabinoids on HRQoL or mental well-being. However, studies were clinically heterogeneous and since many glioma patients currently frequently use cannabinoids, future studies are necessary to evaluate its value in this specific population. 01 februari 2023
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- 2023
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5. An industrial data-spaces framework for resilient manufacturing value chains
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Kosmas Alexopoulos, Markus Weber, Thomas Trautner, Martin Manns, Nikolaos Nikolakis, Matthias Weigold, and Bernd Engel
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General Earth and Planetary Sciences ,General Environmental Science - Published
- 2023
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6. Global Climate
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Robert J. H. Dunn, Freya Aldred, Nadine Gobron, John B. Miller, Kate M. Willett, Melanie Ades, Robert Adler, R. P. Allan, John Anderson, Orlane Anneville, Yasuyuki Aono, Anthony Argüez, Carlo Arosio, John A. Augustine, Cesar Azorin-Molina, Jonathan Barichivich, Aman Basu, Hylke E. Beck, Nicolas Bellouin, Angela Benedetti, Kevin Blagrave, Stephen Blenkinsop, Olivier Bock, Xavier Bodin, Michael G. Bosilovich, Olivier Boucher, Gerald Bove, Dennis Buechler, Stefan A. Buehler, Laura Carrea, Kai-Lan Chang, Hanne H. Christiansen, John R. Christy, Eui-Seok Chung, Laura M. Ciasto, Melanie Coldewey-Egbers, Owen R. Cooper, Richard C. Cornes, Curt Covey, Thomas Cropper, Molly Crotwell, Diego Cusicanqui, Sean M. Davis, Richard A. M. de Jeu, Doug Degenstein, Reynald Delaloye, Markus G. Donat, Wouter A. Dorigo, Imke Durre, Geoff S. Dutton, Gregory Duveiller, James W. Elkins, Thomas W. Estilow, Nava Fedaeff, David Fereday, Vitali E. Fioletov, Johannes Flemming, Michael J. Foster, Stacey M. Frith, Lucien Froidevaux, Martin Füllekrug, Judith Garforth, Jay Garg, Matthew Gentry, Steven Goodman, Qiqi Gou, Nikolay Granin, Mauro Guglielmin, Sebastian Hahn, Leopold Haimberger, Brad D. Hall, Ian Harris, Debbie L. Hemming, Martin Hirschi, Shu-pen (Ben) Ho, Robert Holzworth, Filip Hrbáček, Daan Hubert, Petra Hulsman, Dale F. Hurst, Antje Inness, Ketil Isaksen, Viju O. John, Philip D. Jones, Robert Junod, Andreas Kääb, Johannes W. Kaiser, Viktor Kaufmann, Andreas Kellerer-Pirklbauer, Elizabeth C. Kent, Richard Kidd, Hyungiun Kim, Zak Kipling, Akash Koppa, Jan Henning L’Abée-Lund, Xin Lan, Kathleen O. Lantz, David Lavers, Norman G. Loeb, Diego Loyola, Remi Madelon, Hilmar J. Malmquist, Wlodzimierz Marszelewski, Michael Mayer, Matthew F. McCabe, Tim R. McVicar, Carl A. Mears, Annette Menzel, Christopher J. Merchant, Diego G. Miralles, Stephen A. Montzka, Colin Morice, Leander Mösinger, Jens Mühle, Julien P. Nicolas, Jeannette Noetzli, Tiina Nõges, Ben Noll, John O’Keefe, Tim J. Osborn, Taejin Park, Cecile Pellet, Maury S. Pelto, Sarah E. Perkins-Kirkpatrick, Coda Phillips, Stephen Po-Chedley, Lorenzo Polvani, Wolfgang Preimesberger, Colin Price, Merja Pulkkanen, Dominik G. Rains, William J. Randel, Samuel Rémy, Lucrezia Ricciardulli, Andrew D. Richardson, David A. Robinson, Matthew Rodell, Nemesio J. Rodríguez-Fernández, Karen H. Rosenlof, Chris Roth, Alexei Rozanov, This Rutishäuser, Ahira Sánchez-Lugo, Parnchai Sawaengphokhai, Verena Schenzinger, Robert W. Schlegel, Udo Schneider, Sapna Sharma, Lei Shi, Adrian J. Simmons, Carolina Siso, Sharon L. Smith, Brian J. Soden, Viktoria Sofieva, Tim H. Sparks, Paul W. Stackhouse, Ryan Stauffer, Wolfgang Steinbrecht, Andrea K. Steiner, Kenton Stewart, Pietro Stradiotti, Dimitri A. Streletskiy, Hagen Telg, Stephen J. Thackeray, Emmanuel Thibert, Michael Todt, Daisuke Tokuda, Kleareti Tourpali, Mari R. Tye, Ronald van der A, Robin van der Schalie, Gerard van der Schrier, Mendy van der Vliet, Guido R. van der Werf, Arnold. van Vliet, Jean-Paul Vernier, Isaac J. Vimont, Katrina Virts, Sebastiàn Vivero, Holger Vömel, Russell S. Vose, Ray H. J. Wang, Markus Weber, David Wiese, Jeanette D. Wild, Earle Williams, Takmeng Wong, R. I. Woolway, Xungang Yin, Ye Yuan, Lin Zhao, Xinjia Zhou, Jerry R. Ziemke, Markus Ziese, Ruxandra M. Zotta, Natural Environment Research Council (UK), European Commission, Department of Energy (US)an), Estonian Research Council, National Research Foundation of Korea, European Research Council, King Abdullah University of Science and Technology, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Fundación BBVA, Royal Society (UK), and NASA Astrobiology Institute (US)
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Atmospheric Science - Abstract
© Copyright 2022. Sociedad Meteorológica Estadounidense (AMS). Para obtener permiso para reutilizar cualquier parte de este Trabajo, comuníquese con permisos@ametsoc. org . Cualquier uso del material en este Trabajo que se determine como "uso justo" según la Sección 107 de la Ley de derechos de autor de EE. UU. (17 Código de EE. UU. § 107) o que cumpla las condiciones especificadas en la Sección 108 de la Ley de derechos de autor de EE. ) no requiere el permiso de la AMS. La republicación, la reproducción sistemática, la publicación en forma electrónica, como en un sitio web o en una base de datos de búsqueda, u otros usos de este material, excepto los exentos de la declaración anterior, requieren un permiso por escrito o una licencia de la AMS. Todas las publicaciones periódicas y monográficas de AMS están registradas en el Centro de Autorización de Derechos de Autor (https://www.copyright.com ). Se proporcionan detalles adicionales en la declaración de política de derechos de autor de AMS, disponible en el sitio web de AMS ( https://www.ametsoc.org/PUBSCopyrightPolicy ) ., In 2021, both social and economic activities began to return towards the levels preceding the COVID-19 pandemic for some parts of the globe, with others still experiencing restrictions. Meanwhile, the climate has continued to respond to the ongoing increase in greenhouse gases and resulting warming. La Niña, a phenomenon which tends to depress global temperatures while changing rainfall patterns in many regions, prevailed for all but two months of the year. Despite this, 2021 was one of the six-warmest years on record as measured by global mean surface temperature with an anomaly of between +0.21° and +0.28°C above the 1991–2020 climatology., Lake surface water temperatures from satellite data have been generated within the GloboLakes project funded by the UK National Environment Research Council (NE/J023345/2), with extensions funded by the EU Copernicus Climate Change Service (C3S) programme...
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- 2022
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7. Cervical Spinal Cord Gray Matter Area is Associated with Motor Unit Number Index in Spinal Muscular Atrophy (S33.008)
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Maria Janina Wendebourg, Eva Kesenheimer, Claudia Weidensteiner, Laura Sander, Matthias Weigel, Tanja Haas, Dirk Fischer, Christoph Neuwirth, Nathalie Braun, Markus Weber, Cristina Granziera, Michael Sinnreich, Oliver Bieri, and Regina Schlaeger
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- 2023
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8. Cervical Spinal Cord Gray Matter Atrophy as an Emerging Imaging Marker in Spinal Muscular Atrophy (P2-8.014)
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Eva Kesenheimer, Maria Janina Wendebourg, Claudia Weidensteiner, Laura Sander, Matthias Weigel, Tanja Haas, Dirk Fischer, Christoph Neuwirth, Nathalie Braun, Markus Weber, Cristina Granziera, Michael Sinnreich, Oliver Bieri, and Regina Schlaeger
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- 2023
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9. Risikomanagement in der orthopädischen Chirurgie
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Matthias Meyer, Tobias Kappenschneider, Joachim Grifka, and Markus Weber
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Orthopedics and Sports Medicine - Published
- 2022
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10. Anwendungen und Geschäftsmodelle mit Gaia-X/Applications and business models with Gaia-X – EuProGiant – From use case to business case with Gaia-X in the Industrie 4.0 domain
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Markus Weber, Benjamin Brockhaus, Felix Hoffmann, Heiko Ranzau, Matthias Weigold, Stefan Dumss, Clemens Schwaiger, and Friedrich Bleicher
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Control and Systems Engineering ,Automotive Engineering - Abstract
Derzeit entwickelt eine Vielzahl von geförderten Konsortien Anwendungsfälle im Gaia-X-Kontext. Sie sind charakterisiert durch den Nutzen des unternehmensübergreifenden Datenaustauschs. Dennoch wird ein Großteil der Vorhaben keiner bewussten Kosten-Nutzen-Analyse unterzogen. Bestehende Vorgehensmodelle für datenbasierte Geschäftsmodelle berücksichtigen die Interoperabilität nicht. Es fehlt eine ganzheitliche Beschreibung, wie Anwendungsfälle in wettbewerbsfähige Geschäftsmodelle überführt werden. Currently, a number of funded consortia are developing use cases in the Gaia-X context. They are characterised by the benefits of cross-company data exchange. Nevertheless, the majority of the projects are not subjected to a conscious cost-benefit analysis. Existing process models for data-based business models do not take interoperability into account. There is no holistic description of how use cases are transformed into competitive business models.
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- 2022
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11. Gaseous emissions of a heavy-duty engine fueled with polyoxymethylene dimethyl ethers (OME) in transient cold-start operation and methods for after-treatment system heating
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Alexander D. Gelner, Genny A. Pang, Markus Weber, Christoph Haisch, Harald A. Beck, Christian Pastoetter, Martin Härtl, Malte Jaensch, and Georg Wachtmeister
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Cold-start emissions of the sustainable alternative diesel fuel OME are predominantly NOx, formaldehyde, formic acid and unburned OME. Electrical heating in combination with fuel dosing is an effective method for after-treatment system heating.
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- 2022
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12. Avascular necrosis of the femoral head: three-dimensional measurement of drilling precision reveals high accuracy and no difference between fluoroscopically controlled core decompression and cancellous bone grafting
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Michael Woerner, Korbinian Voelkl, Felix Ferner, Markus Weber, Tobias Renkawitz, Joachim Grifka, and Benjamin Craiovan
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Orthopedics and Sports Medicine ,Surgery ,General Medicine - Published
- 2023
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13. Inguinal hernia treatment in Switzerland: inpatient vs. outpatient setting — HerStAmb Study (prospective observational two-centre comparative study)
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Michal Ziga, Laurin Burla, Adrienne Imhof, Thomas Gürtler, and Markus Weber
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Surgery - Abstract
Since 01/2018, AVOS (ambulant vor stationär = outpatient to inpatient) regulation has been progressively implemented in hernia surgery in Switzerland. The aim of this prospective, observational, two-centre comparative study was to compare the outcome of outpatient and inpatient post-operative care in terms of AVOS by examining the re-admission rate, complication rate and quality of life in patients with primary unilateral inguinal hernia repair.The study ran between 01/2019 and 04/2020 and included 237 patients with a primary unilateral inguinal hernia. Treatment setting was decided according to AVOS guidelines. Primary endpoint was re-admission rate within 6 weeks postoperatively. Secondary endpoints were the complication rate and patient outcome (quality of life) at 6 weeks follow-up postoperatively, as measured by the Short Form 36 Health Survey Questionnaire (SF-36).Complications occurred in 11 (14%) inpatient patients, but none required re-admitting for revision until follow-up at 6 weeks after discharge. In the outpatient group, there were 27 (17%) complications reported, while 6 (4%) of these patients crossed over to the inpatient group immediately after surgery. None of the other complications required re-admission until follow-up at 6 weeks. No significant relationship between treatment setting and number of complications/re-admission rate (p=0.458, p=0.061) was observed. The mean outcome (SF-36) between the treatment groups was not significantly different (p=0.16-0.856).In terms of AVOS selection criteria in Switzerland, primary unilateral inguinal hernia can be safely treated in both treatment settings. Re-admission rates, complications and quality of life do not significantly differ. Day surgery in terms of AVOS might be as effective and efficient, both from the patient's perspective and that of the institution.NCT05234242.
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- 2023
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14. Effects of structured intraoperative briefings on patient outcomes: multicentre before-and-after study
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Guido Beldi, Sandra Keller, Eliane Timm-Holzer, Gian Andrea Prevost, Markus Weber, Simon Wrann, Nicolas Demartines, Norbert K. Semmer, Daniel Candinas, Franziska Tschan, Martin Hübner, Jasmin Zimmermann, Jonas Marschall, Simon Andreas Huber, and Vanessa Banz
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Male ,Reoperation ,medicine.medical_specialty ,Time Factors ,610 Medicine & health ,030230 surgery ,law.invention ,Intraoperative Period ,03 medical and health sciences ,0302 clinical medicine ,Primary outcome ,Randomized controlled trial ,360 Social problems & social services ,law ,Humans ,Medicine ,030212 general & internal medicine ,Patient Care Team ,Surgical team ,300 Social sciences, sociology & anthropology ,business.industry ,General surgery ,Odds ratio ,Length of Stay ,Middle Aged ,3. Good health ,Treatment Outcome ,Controlled Before-After Studies ,Surgical Procedures, Operative ,Propensity score matching ,Female ,Surgery ,Before and after study ,150 Psychology ,business ,Hospital stay - Abstract
Operations require collaboration between surgeons, anaesthetia professionals, and nurses. The aim of this study was to determine whether intraoperative briefings influence patient outcomes.In a before-and-after controlled trial (9 months baseline; 9 months intervention), intraoperative briefings were introduced in four general surgery centres between 2015 and 2018. During the operation, the responsible surgeon (most senior surgeon present) briefed the surgical team using the StOP? protocol about: progress of the operation (Status), next steps (Objectives), possible problems (Problems), and encouraged asking questions (?). Differences between baseline and intervention were analysed regarding surgical-site infections (primary outcome), mortality, unplanned reoperations, and duration of hospital stay (secondary outcomes), using inverse probability of treatment (IPT) weighting based on propensity scores.In total, 8256 patients underwent surgery in the study. Endpoint data were available for 7745 patients (93.8 per cent). IPT-weighted and adjusted intention-to-treat analyses showed no differences in surgical-site infections between baseline and intervention (9.8 versus 9.6 per cent respectively; adjusted difference (AD) -0.15 (95 per cent c.i. -1.45 to 1.14) per cent; odds ratio (OR) 0.92, 95 per cent c.i. 0.83 to 1.15; P = 0.797), but there were reductions in mortality (1.6 versus 1.1 per cent; AD -0.54 (-1.04 to -0.03) per cent; OR 0.60, 0.39 to 0.92; P = 0.018), unplanned reoperations (6.4 versus 4.8 per cent; AD -1.66 (-2.69 to -0.62) per cent; OR 0.72, 0.59 to 0.89; P = 0.002), and fewer prolonged hospital stays (21.6 versus 19.8 per cent; AD -1.82 (-3.48 to -0.15) per cent; OR 0.87, 0.77 to 0.98; P = 0.024).Short intraoperative briefings improve patient outcomes and should be performed routinely.Outcomes of surgery depend on patient characteristics and surgeon expertise, but also on teamwork, notably communication. The present study introduces the StOP? protocol, in which the surgeon informs the team about the current status (St), objectives regarding next steps (O), and potential problems (P), and encourages the team to ask questions and raise concerns (?). The results suggest an effect of the StOP? intervention on patient mortality, risk of unplanned reoperation, and duration of hospital stay, but not on surgical-site infections. The study is promising regarding the effect of structured intraoperative communication on important patient outcomes. The study compared patient outcomes at baseline and after implementation of the StOP? protocol, which enhances exchange of structured information within the interdisciplinary surgical team during the course of the operation. The intention-to-treat analyses in this multicentre before-and-after study of 8256 patients undergoing general surgery showed no differences between baseline and intervention for surgical-site infections, but revealed reduced mortality and unplanned reoperations, and fewer prolonged hospital stays during the intervention period.
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- 2021
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15. Large-scale Analyses of CAV1 and CAV2 Suggest Their Expression is Higher in Post-mortem ALS Brain Tissue and Affects Survival
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Brett N Adey, Johnathan Cooper-Knock, Ahmad Al Khleifat, Isabella Fogh, Philip van Damme, Philippe Corcia, Philippe Couratier, Orla Hardiman, Russell McLaughlin, Marc Gotkine, Vivian Drory, Vincenzo Silani, Nicola Ticozzi, Jan H. Veldink, Leonard H. van den Berg, Mamede de Carvalho, Susana Pinto, Jesus S. Mora Pardina, Monica Povedano, Peter M. Andersen, Markus Weber, Nazli A. Başak, Christopher E Shaw, Pamela J. Shaw, Karen E. Morrison, John E. Landers, Jonathan D. Glass, Patrick Vourc’h, Richard JB Dobson, Gerome Breen, Ammar Al-Chalabi, Ashley R Jones, and Alfredo Iacoangeli
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Neurologi ,Settore MED/08 - Anatomia Patologica ,ALS (Amyotrophic lateral sclerosis) ,AMYOTROPHIC-LATERAL-SCLEROSIS ,survival analysis ,Cellular and Molecular Neuroscience ,enhancer variant ,CAV1 and CAV2 ,CAVEOLIN-1 ,Science & Technology ,neurodegeneration ,Neurosciences ,IDENTIFY ,Cav ,caveolin ,differential expression analysis (DEA) ,Amyotrophic lateral sclerosis ,Neurology ,Marcadors genètics ,Genetic markers ,Settore MED/26 - Neurologia ,Neurosciences & Neurology ,Life Sciences & Biomedicine ,ASSOCIATION ANALYSES ,Esclerosi lateral amiotròfica ,Neurovetenskaper - Abstract
Introduction: Caveolin-1 and Caveolin-2 (CAV1 and CAV2) are proteins associated with intercellular neurotrophic signalling. There is converging evidence that CAV1 and CAV2 (CAV1/2) genes have a role in amyotrophic lateral sclerosis (ALS). Disease-associated variants have been identified within CAV1/2 enhancers, which reduce gene expression and lead to disruption of membrane lipid rafts.Methods: Using large ALS whole-genome sequencing and post-mortem RNA sequencing datasets (5,987 and 365 tissue samples, respectively), and iPSC-derived motor neurons from 55 individuals, we investigated the role of CAV1/2 expression and enhancer variants in the ALS phenotype.Results: We report a differential expression analysis between ALS cases and controls for CAV1 and CAV2 genes across various post-mortem brain tissues and three independent datasets. CAV1 and CAV2 expression was consistently higher in ALS patients compared to controls, with significant results across the primary motor cortex, lateral motor cortex, and cerebellum. We also identify increased survival among carriers of CAV1/2 enhancer mutations compared to non-carriers within Project MinE and slower progression as measured by the ALSFRS. Carriers showed a median increase in survival of 345 days.Discussion: These results add to an increasing body of evidence linking CAV1 and CAV2 genes to ALS. We propose that carriers of CAV1/2 enhancer mutations may be conceptualised as an ALS subtype who present a less severe ALS phenotype with a longer survival duration and slower progression. Upregulation of CAV1/2 genes in ALS cases may indicate a causal pathway or a compensatory mechanism. Given prior research supporting the beneficial role of CAV1/2 expression in ALS patients, we consider a compensatory mechanism to better fit the available evidence, although further investigation into the biological pathways associated with CAV1/2 is needed to support this conclusion.
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- 2022
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16. Global Climate
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Robert J. H. Dunn, F. Aldred, Nadine Gobron, John B. Miller, Kate M. Willett, M. Ades, Robert Adler, Richard, P. Allan, Rob Allan, J. Anderson, Anthony Argüez, C. Arosio, John A. Augustine, C. Azorin-Molina, J. Barichivich, H. E. Beck, Andreas Becker, Nicolas Bellouin, Angela Benedetti, David I. Berry, Stephen Blenkinsop, Olivier Bock, X. Bodin, Michael G. Bosilovich, Olivier Boucher, S. A. Buehler, B. Calmettes, Laura Carrea, Laura Castia, Hanne H. Christiansen, John R. Christy, E.-S. Chung, Melanie Coldewey-Egbers, Owen R. Cooper, Richard C. Cornes, Curt Covey, J.-F. Cretaux, M. Crotwell, Sean M. Davis, Richard A. M. de Jeu, Doug Degenstein, R. Delaloye, Larry Di Girolamo, Markus G. Donat, Wouter A. Dorigo, Imke Durre, Geoff S. Dutton, Gregory Duveiller, James W. Elkins, Vitali E. Fioletov, Johannes Flemming, Michael J. Foster, Stacey M. Frith, Lucien Froidevaux, J. Garforth, Matthew Gentry, S. K. Gupta, S. Hahn, Leopold Haimberger, Brad D. Hall, Ian Harris, D. L. Hemming, M. Hirschi, Shu-pen (Ben) Ho, F. Hrbacek, Daan Hubert, Dale F. Hurst, Antje Inness, K. Isaksen, Viju O. John, Philip D. Jones, Robert Junod, J. W. Kaiser, V. Kaufmann, A. Kellerer-Pirklbauer, Elizabeth C. Kent, R. Kidd, Hyungjun Kim, Z. Kipling, A. Koppa, B. M. Kraemer, D. P. Kratz, Xin Lan, Kathleen O. Lantz, D. Lavers, Norman G. Loeb, Diego Loyola, R. Madelon, Michael Mayer, M. F. McCabe, Tim R. McVicar, Carl A. Mears, Christopher J. Merchant, Diego G. Miralles, L. Moesinger, Stephen A. Montzka, Colin Morice, L. Mösinger, Jens Mühle, Julien P. Nicolas, Jeannette Noetzli, Ben Noll, J. O’Keefe, Tim J. Osborn, T. Park, A. J. Pasik, C. Pellet, Maury S. Pelto, S. E. Perkins-Kirkpatrick, G. Petron, Coda Phillips, S. Po-Chedley, L. Polvani, W. Preimesberger, D. G. Rains, W. J. Randel, Nick A. Rayner, Samuel Rémy, L. Ricciardulli, A. D. Richardson, David A. Robinson, Matthew Rodell, N. J. Rodríguez-Fernández, K.H. Rosenlof, C. Roth, A. Rozanov, T. Rutishäuser, Ahira Sánchez-Lugo, P. Sawaengphokhai, T. Scanlon, Verena Schenzinger, R. W. Schlegel, S. Sharma, Lei Shi, Adrian J. Simmons, Carolina Siso, Sharon L. Smith, B. J. Soden, Viktoria Sofieva, T. H. Sparks, Paul W. Stackhouse, Wolfgang Steinbrecht, Martin Stengel, Dimitri A. Streletskiy, Sunny Sun-Mack, P. Tans, S. J. Thackeray, E. Thibert, D. Tokuda, Kleareti Tourpali, Mari R. Tye, Ronald van der A, Robin van der Schalie, Gerard van der Schrier, M. van der Vliet, Guido R. van der Werf, A. Vance, Jean-Paul Vernier, Isaac J. Vimont, Holger Vömel, Russell S. Vose, Ray Wang, Markus Weber, David Wiese, Anne C. Wilber, Jeanette D. Wild, Takmeng Wong, R. Iestyn Woolway, Xinjia Zhou, Xungang Yin, Guangyu Zhao, Lin Zhao, Jerry R. Ziemke, Markus Ziese, and R. M. Zotta
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Atmospheric Science ,Index (economics) ,010504 meteorology & atmospheric sciences ,Global climate ,0207 environmental engineering ,02 engineering and technology ,Annual report ,State (functional analysis) ,01 natural sciences ,13. Climate action ,Climatology ,Environmental monitoring ,Environmental science ,020701 environmental engineering ,0105 earth and related environmental sciences - Abstract
Global Climate is one chapter from the State of the Climate in 2019 annual report and is avail- able from https://doi.org/10.1175/BAMS-D-20-0104.1 Compiled by NOAA’s National Centers for Environmental Information, State of the Climate in 2019 is based on contributions from scien- tists from around the world. It provides a detailed update on global climate indicators, notable weather events, and other data collected by environmental monitoring stations and instru- ments located on land, water, ice, and in space. The full report is available from https://doi.org/10.1175/2020BAMSStateoftheClimate.1.
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- 2021
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17. Kinematic pelvic tilt during gait alters functional cup position in total hip arthroplasty
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Joachim Grifka, Sebastian Dendorfer, Markus Weber, Matthias Meyer, Franz Suess, Tobias Renkawitz, and Seth A Jerabek
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Male ,Pelvic tilt ,component position, gait analysis, kinematics, pelvic tilt, total hip arthroplasty ,Arthroplasty, Replacement, Hip ,0206 medical engineering ,610 Medizin ,02 engineering and technology ,Kinematics ,03 medical and health sciences ,0302 clinical medicine ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Prospective Studies ,Range of Motion, Articular ,Pelvic Bones ,Gait ,Pelvis ,030203 arthritis & rheumatology ,Orthodontics ,ddc:610 ,business.industry ,Acetabulum ,020601 biomedical engineering ,Biomechanical Phenomena ,medicine.anatomical_structure ,Gait analysis ,Cup position ,Female ,business ,Range of motion ,Total hip arthroplasty - Abstract
Static pelvic tilt impacts functional cup position in total hip arthroplasty (THA). In the current study we investigated the effect of kinematic pelvic changes on cup position. In the course of a prospective controlled trial postoperative 3D-computed tomography (CT) and gait analysis before and 6 and 12 months after THA were obtained in 60 patients. Kinematic pelvic motion during gait was measured using Anybody Modeling System. By fusion with 3D-CT, the impact of kinematic pelvic tilt alterations on cup anteversion and inclination was calculated. Furthermore, risk factors correlating with high pelvic mobility were evaluated. During gait a high pelvic range of motion up to 15.6° exceeding 5° in 61.7% (37/60) of patients before THA was found. After surgery, the pelvis tilted posteriorly by a mean of 4.0 ± 6.6° (p < .001). The pelvic anteflexion led to a mean decrease of −1.9 ± 2.2° (p < .001) for cup inclination and −15.1 ± 6.1° (p < .001) for anteversion in relation to the anterior pelvic plane (APP). Kinematic pelvic changes resulted in a further change up to 2.3° for inclination and up to 12.3° for anteversion. In relation to the preoperative situation differences in postoperative cup position ranged from −4.4 to 4.6° for inclination and from −7.8 to 17.9° for anteversion, respectively. Female sex (p < .001) and normal body weight (p < .001) correlated with high alterations in pelvic tilt. Kinematic pelvic changes highly impact cup anteversion in THA. Surgeons using the APP as reference should aim for a higher anteversion of about 15° due to the functional anteflexion of the pelvis during gait.
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- 2021
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18. Die bayerischen Gletscher, die verbliebenen Eisreserven Deutschlands
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Markus Weber, Anja Wendt, Wilfried Hagg, and Christoph Mayer
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Environmental sciences ,05 social sciences ,0507 social and economic geography ,GE1-350 ,Oceanography ,050703 geography - Abstract
Gletscher gibt es in Deutschland nur in dem sehr kleinen Alpenanteil und dort nur an wenigen, für die Eismassen günstigen Stellen. Diese Gletscher sind vermutlich keine Relikte der letzten Eiszeit, sondern Reste der kühleren Phasen der letzten Jahrhunderte. Trotzdem ging von diesen verbliebenen Eisreserven seit dem Beginn der touristischen Erschließung der Alpen eine große Faszination aus, da sie teilweise vom Tal aus zu sehen, oder verhältnismäßig leicht zu erreichen waren. Selbst heute noch kann man auf dem nördlichen Schneeferner den einzigen Gletscherskilift in Deutschland erleben, wenngleich auch dort die Gletscherflächen erheblich zurückgegangen sind. Die frühe Aufmerksamkeit führte auch dazu, dass es viele historische Dokumente über diese Gletscher gibt und so zumindest ihre Veränderung seit dem Ende der kleinen Eiszeit gut dokumentiert ist. Heute sind fast alle der bayerischen Gletscher am Rande ihrer Existenz und es ist nur eine Frage der Zeit, bis der deutsche Alpenraum eisfrei wird. Wir versuchen mit diesem Beitrag die Entwicklung der Gletscher seit den ersten Untersuchungen zu dokumentieren.
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- 2021
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19. HELIOS/SICRIT/mass spectrometry for analysis of aerosols in engine exhaust
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Christoph Haisch, Anastasios Kontses, Miikka Dal Maso, Klemens M. Thaler, Zissis Samaras, Panu Karjalainen, Sanna Saarikoski, Andreas Vohburger, Minna Aurela, Markus Weber, Reinhard Niessner, Hilkka Timonen, Zisimos Toumasatos, Joni Kalliokoski, Genny A. Pang, Sampsa Martikainen, Jorma Keskinen, Pauli Simonen, Lorenza Gilardi, Tampere University, and Physics
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Nuclear engineering ,Environmental Chemistry ,Environmental science ,General Materials Science ,HeliOS ,Current (fluid) ,Mass spectrometry ,114 Physical sciences ,complex mixtures ,Pollution - Abstract
Current legislations typically characterize systems of aerosols, such as from vehicle exhaust, primarily by number concentration and size distributions. While potential health threats have a dependence on the particle size, the chemical composition of particles, including the volatile and semi-volatile components adsorbed onto nonvolatile particle cores present at roadside and urban settings, is important in understanding the impact of exhaust particles on health. To date, the only tools suitable for an online in-depth chemical aerosol characterization are aerosol mass spectrometers, which are typically composed of complex and cost intensive instrumentation. We present a new analytical system, which combines a novel inexpensive infrared-radiation-based evaporation system (HELIOS) with a commercially available highly efficient atmospheric ionization source (SICRIT) connected to a rather low-price ion-trap mass spectrometer. Our inexpensive, robust and mobile aerosol characterization HELIOS/SICRIT/Mass Spectrometry system enables highly sensitive chemical analysis of particle-associated volatile substances. We validate the HELIOS/SICRIT/Mass Spectrometry system in laboratory experiments with coated particles generated under controlled conditions, and show that the system is capable of identification of combustion-generated polycyclic aromatic hydrocarbons and relative quantification of individual chemical species adsorbed on particle surfaces. We then employ our system to analyze real-world vehicle engine exhaust aerosol and show through time-resolved measurements with high time resolution (
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- 2021
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20. Infizierte Endoprothese des Rheumatikers
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Joachim Grifka, Matthias Meyer, and Markus Weber
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musculoskeletal diseases ,030203 arthritis & rheumatology ,medicine.medical_specialty ,business.industry ,Joint replacement ,medicine.medical_treatment ,Medical laboratory ,Periprosthetic ,medicine.disease ,Prosthesis ,Rheumatology ,03 medical and health sciences ,Chronic infection ,0302 clinical medicine ,Internal medicine ,Orthopedic surgery ,medicine ,030212 general & internal medicine ,Intensive care medicine ,business ,Rheumatism - Abstract
Infections are a severe complication after an artificial joint replacement. The clinical symptoms are highly variable, particularly in patients with inflammatory rheumatic diseases, which often makes the diagnosis difficult. In addition to clinical and laboratory findings, joint puncture is an essential component of the diagnostics and enables the identification of pathogens. Treatment of periprosthetic infections in patients with rheumatism should be an interdisciplinary cooperation between surgeons, rheumatologists and specialists for infectious diseases. The two essential pillars of treatment are surgical intervention and antibiotics. For acute joint infections an attempt at preservation of the artificial joint can be carried out, whereas for chronic infection situations only replacement of the prosthesis is possible as a curative treatment. In order to reduce the probability of occurrence of a joint infection, modifiable risk factors should be preoperatively identified and specifically treated.
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- 2021
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21. Mixed‐Metal Monophosphate Tungsten Bronzes Containing Rhodium and Iridium
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Alexander Karbstein, Werner Mader, Robert Glaum, Markus Weber, Jörg Daniels, Dominic Lahr, Stephan Andreas Schunk, Wilfried Assenmacher, and Frank Rosowski
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Inorganic Chemistry ,Solid-state chemistry ,chemistry ,Mixed metal ,ddc:540 ,Inorganic chemistry ,chemistry.chemical_element ,Iridium ,Tungsten ,Solid state structure ,Rhodium - Abstract
Solution combustion synthesis followed by annealing in air led to the MPTB‐related phosphates (Rh1/6W5/6O3)8(PO2)4, (Ir1/6W5/6O3)8(PO2)4 (a=5.258(2) Å, b=6.538(3) Å, c=17.322(8) Å), (Rh1/9W8/9O3)12(PO2)4 and (Rh2/21W19/21O3)14(PO2)4. Single‐crystals of the mixed‐metal (Rh,W)‐MPTBs at m=4 and at m=7 were grown by chemical vapor transport (CVT). Their crystal structures have been refined from X‐ray single‐crystal data {(Rh,W)‐MPTB at m=4: P212121, Z=1, a=5.2232(3) Å, b=6.4966(3) Å, c=17.3819(9) Å, R1=0.032, wR2=0.075 for 1714 unique reflections, 1524 with Fo>4σ(Fo), 66 variables, 1 constraint, composition from refinement (Rh0.15W0.85O3)8(PO2)4; (Rh,W)‐MPTB at m=7: P21/n, Z=1, a=5.2510(4) Å, b=6.4949(5) Å, c=26.685(2) Å, β=90.30(1)°, R1=0.060, wR2=0.163 for 2074 unique reflections, 1894 with Fo>4σ(Fo), 100 variables, comp. from ref. (Rh0.07W0.93O3)14(PO2)4}. These structure refinements show unexpected distribution of Rh and W over the available metal sites. Further characterization (powder reflectance and magnetic measurements) of the (Rh,W)‐MPTB at m=4 and at m=7 suggest for both phases a homogeneity range with respect to the Rh/W ratio and the presence of small amounts of W5+ besides Rh3+ and W6+. Results of the ligand field analysis for the reference material Rh(PO3)3, which is containing the octahedral chromophore [RhIIIO6], are reported (Δo=23200 cm−1, B=490 cm−1).
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- 2021
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22. Chemoradiotherapy after curative surgery for locally advanced pancreatic cancer: A 20-year single center experience
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Markus Weber, P. Weibel, Matea Pavic, N. Lombriser, and S. Gutknecht
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Adult ,Male ,medicine.medical_specialty ,FOLFIRINOX ,medicine.medical_treatment ,Adenocarcinoma ,Single Center ,03 medical and health sciences ,Pancreatectomy ,0302 clinical medicine ,Pancreatic cancer ,medicine ,Adjuvant therapy ,Humans ,030212 general & internal medicine ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Retrospective cohort study ,Chemoradiotherapy, Adjuvant ,Middle Aged ,Prognosis ,medicine.disease ,Gemcitabine ,Surgery ,Pancreatic Neoplasms ,Survival Rate ,Radiation therapy ,Oncology ,030220 oncology & carcinogenesis ,Female ,business ,Chemoradiotherapy ,Follow-Up Studies ,medicine.drug - Abstract
Introduction Pancreatic adenocarcinoma (PAC) is a highly malignant tumor with relevant morbidity and mortality. The role of adjuvant chemoradiotherapy (CRT) for primarily resected tumors remains controversial. We aimed to assess the outcome of patients treated at our institution with postoperative CRT for PAC. Methods We present a retrospective case series of patients with pancreatic adenocarcinoma at a single center in Switzerland. These patients were treated by primary surgery followed by adjuvant CRT between 1995 and 2015. The results were compared with published data. Results Median follow-up for the 60 patients was 33 months (range 19.9–193.9); median overall survival (OS) for patients undergoing a resection followed by combined CRT was 25.5 months. Overall, disease-free survival (DFS) was 15.2 months. A local recurrence occurred in 14 patients (23.3%) after a median time of 8.8 months, and in 43 patients (71.7%) distant metastasis was demonstrated with a median time to metastasis of 10.6 months. Conclusion This retrospective study represents one of the sole reviews of outcome data after adjuvant CRT in resected PAC in Europe within the past years. OS was comparable to that of other institutional outcome data published previously but inferior when compared to most recent published results with an intense chemotherapy. However, not all patients are suitable to undergo such an intense chemotherapy with modified FOLFIRINOX after the extensive surgery for the PAC – these patients could benefit from adding adjuvant CRT to a less intensive chemotherapy with gemcitabine to enhance the benefit regarding locoregional recurrence-free survival.
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- 2021
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23. EuProGigant – A Concept Towards an Industrial System Architecture for Data-Driven Production Systems
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Clemens Schwaiger, Friedrich Bleicher, Markus Weber, Manfred Grafinger, Stefan Dumss, Clemens Sulz, Patrick Rosenberger, and Matthias Weigold
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Computer science ,Industrial systems ,Systems engineering ,General Earth and Planetary Sciences ,Production (economics) ,Architecture ,General Environmental Science ,Data-driven - Published
- 2021
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24. Intraoperative Bestimmung der Beckenkippung und Pfannenposition in der Hüftendoprothetik – Relevanz der Navigation und Robotik
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Tobias Renkawitz, Matthias Meyer, Florian Völlner, and Markus Weber
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Pelvic tilt ,030222 orthopedics ,3d positioning ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Kinematics ,Prosthesis ,03 medical and health sciences ,0302 clinical medicine ,Robotic systems ,Stereotaxy ,Orthopedic surgery ,Medicine ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,business ,Nuclear medicine ,Preoperative imaging - Abstract
The optimal 3D positioning of the prosthesis components is of great importance for the stability and function of a total hip endoprosthesis. Pelvic tilt has a particular influence on the position of the implant. In order to use intraoperatively the knowledge on pelvic kinematics gained through preoperative imaging procedures and movement analyses, "image-based" and "image-free" robotic and navigation procedures are available. With the "image-based" procedures, a 3D CT scan serves as the surgeon's basis for operative planning. The "image-free" procedures are based on the principles of stereotaxy. In the future, information about static and dynamic pelvic tilt will be conntected with navigation and robotic systems for total hip arthroplasty. Along with intraoperative data a patientindividual optimized implant position can be achieved.
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- 2020
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25. Identification and Preclinical Development of a 2,5,6-Trisubstituted Fluorinated Pyridine Derivative as a Radioligand for the Positron Emission Tomography Imaging of Cannabinoid Type 2 Receptors
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Francesco Spinelli, Pal Pacher, Kenneth Atz, Dieter Muri, Linjing Mu, Hazem Ahmed, Adrienne Müller Herde, Christoph Ullmer, Martin Binder, Thomas Johannes Woltering, Hans Iding, Luca Gobbi, Julian Kretz, Ahmed Haider, Markus Weber, Markus Bürkler, Uwe Grether, Roger Schibli, Simon M. Ametamey, Michael Honer, Andreas Brink, Claudia Keller, Irene Knuesel, Christian Bartelmus, University of Zurich, and Ametamey, Simon M
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Male ,Fluorine Radioisotopes ,Biodistribution ,Cannabinoid receptor ,Pyridines ,medicine.medical_treatment ,610 Medicine & health ,Ligands ,Tritium ,01 natural sciences ,Receptor, Cannabinoid, CB2 ,Structure-Activity Relationship ,03 medical and health sciences ,Drug Discovery ,Radioligand ,medicine ,Animals ,Humans ,Rats, Wistar ,Receptor ,030304 developmental biology ,0303 health sciences ,Molecular Structure ,medicine.diagnostic_test ,Chemistry ,3002 Drug Discovery ,Radiochemistry ,Brain ,10181 Clinic for Nuclear Medicine ,In vitro ,0104 chemical sciences ,Molecular Docking Simulation ,010404 medicinal & biomolecular chemistry ,Spinal Cord ,Positron emission tomography ,Positron-Emission Tomography ,1313 Molecular Medicine ,Molecular Medicine ,lipids (amino acids, peptides, and proteins) ,Cannabinoid ,Radiopharmaceuticals ,Spleen ,Ex vivo - Abstract
Despite the broad implications of the cannabinoid type 2 receptor (CB2) in neuroinflammatory processes, a suitable CB2-targeted probe is currently lacking in clinical routine. In this work, we synthesized 15 fluorinated pyridine derivatives and tested their binding affinities toward CB2 and CB1. With a sub-nanomolar affinity (Ki for CB2) of 0.8 nM and a remarkable selectivity factor of >12,000 over CB1, RoSMA-18-d6 exhibited outstanding in vitro performance characteristics and was radiofluorinated with an average radiochemical yield of 10.6 ± 3.8% (n = 16) and molar activities ranging from 52 to 65 GBq/μmol (radiochemical purity > 99%). [18F]RoSMA-18-d6 showed exceptional CB2 attributes as demonstrated by in vitro autoradiography, ex vivo biodistribution, and positron emission tomography (PET). Further, [18F]RoSMA-18-d6 was used to detect CB2 upregulation on postmortem human ALS spinal cord tissues. Overall, these results suggest that [18F]RoSMA-18-d6 is a promising CB2 PET radioligand for clinical translation.
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- 2020
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26. TRICALS: creating a highway toward a cure
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Leonard H. van den Berg, Philip Van Damme, Caroline Ingre, Philippe Corcia, Ruben P A van Eijk, Christopher J McDermott, Evy Reviers, Orla Hardiman, Adriano Chiò, Mònica Povedano, Kit C.B. Roes, Tessa Kliest, Ammar Al-Chalabi, Markus Weber, and Michael A van Es
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Medical education ,Patient Selection ,Clinical study design ,Amyotrophic Lateral Sclerosis ,biomarkers ,Treatment research ,Patient advocacy ,Clinical trial design ,Clinical trial ,03 medical and health sciences ,Preclinical research ,Treatment Outcome ,0302 clinical medicine ,Neurology ,Drug development ,guidelines ,preclinical ,Humans ,Effective treatment ,Neurology (clinical) ,Psychology ,030217 neurology & neurosurgery - Abstract
A change in our current approach toward drug development is required to improve the likelihood of finding effective treatment for patients with amyotrophic lateral sclerosis (ALS). The aim of the Treatment Research Initiative to Cure ALS (TRICALS) is to extend the collective effort with industry and consolidate drug development paths. TRICALS has begun a series of meetings on how to best move the field forward collaboratively, thereby addressing five major topics in ALS clinical trials: (1) preclinical research, (2) biomarker development, (3) eligibility criteria, (4) efficacy endpoints and (5) innovative trial design. There is an appetite for ongoing discussions of these major topics in clinical trials between representatives from academia, patient advocacy groups, industry partners and funding bodies. Industry is open to fundamentally change drug development for ALS and shorten the time to effective therapy for patients by implementing promising innovations in biomarker development, trial design, and patient selection. There is however, a pressing need from all stakeholders for regulatory discussions and amendments of current guidelines to successfully adopt innovation in future clinical development lines. ispartof: AMYOTROPHIC LATERAL SCLEROSIS AND FRONTOTEMPORAL DEGENERATION vol:21 issue:7-8 pages:496-501 ispartof: location:England status: published
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- 2020
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27. Phenol
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Manfred Weber, Markus Weber, and Volker Weber
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- 2020
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28. Characterising ALS disease progression according to El Escorial and Gold Coast criteria
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Adriaan D de Jongh, Nathalie Braun, Markus Weber, Michael A van Es, Pegah Masrori, Jan H Veldink, Philip van Damme, Leonard H van den Berg, and Ruben P A van Eijk
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Psychiatry and Mental health ,Belgium ,Amyotrophic Lateral Sclerosis ,Disease Progression ,Humans ,Surgery ,Neurology (clinical) ,Ghana ,Netherlands - Abstract
BackgroundThe Gold Coast criteria (GCC) have been proposed as a means of selecting patients for amyotrophic lateral sclerosis (ALS) clinical trials. We aimed to characterise disease progression according to the GCC.MethodsData from population-based ALS registries from the Netherlands and Belgium were analysed. The GCC additionally define ALS as lower motor neuron (LMN) dysfunction in ≥2 body regions without upper motor neuron dysfunction. Therefore, the revised El Escorial criteria (rEEC) were supplemented with a ‘Gold Coast ALS’ category for patients with only LMN dysfunction in ≥2 body regions. We assessed survival time, ALS Functional Rating Scale (ALSFRS-R) progression rates and between-patient variability per diagnostic category.ResultsWe included 5957 ALS patients, of whom 600 (10.1%) fulfilled the GCC but not the rEEC, and 95 (1.6%) fulfilled only the rEEC. ALSFRS-R progression rates were similar for the rEEC (0.84 points/month) and GCC (0.81 points/month) with similar variability (standard deviation of 0.59 vs. 0.60) and median survival time (17.8 vs.18.7 months). Survival time and average progression rates varied (pConclusionsThe GCC broaden the definition of ALS, allowing more patients to participate in trials, while minimally impacting population heterogeneity. Given the large variability per diagnostic category, selecting only specific categories for trials may not result in a more homogeneous study population.
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- 2022
29. No impact of sex on surgical site infections in abdominal surgery: a multi-center study
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Simone Nora Zwicky, Severin Gloor, Franziska Tschan, Daniel Candinas, Nicolas Demartines, Markus Weber, and Guido Beldi
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Male ,Reoperation ,Laparotomy ,Risk Factors ,Humans ,Surgical Wound Infection ,610 Medicine & health ,Surgery ,Length of Stay - Abstract
Objective Male sex is controversially discussed as a risk factor for surgical site infections (SSI). The aim of the present study was to evaluate the impact of sex on SSI in abdominal surgery under elimination of relevant confounders. Methods Clinicopathological data of 6603 patients undergoing abdominal surgery from a multi-center prospective database of four Swiss hospitals including patients between 2015 and 2018 were assessed. Patients were stratified according to postoperative SSI and risk factors for SSI were identified using univariate and multivariate analysis. Results In 649 of 6603 patients, SSI was reported (9.8%). SSI was significantly associated with reoperation (22.7% vs. 3.4%, p p 75th percentile (57.0% vs. 17.9%, p p = 0.01). In multivariate analysis including multiple confounders’ such as comorbidities and perioperative factors, there was no association between male sex and risk of SSI (odds ratio (OR) 1.1 [CI 0.8–1.4]). Independent risk factors for SSI in multivariate analysis were BMI ≥ 30 kg/m2 (OR 1.8 [CI 1.3–2.3]), duration of surgery > 75th percentile (OR 2.3 [1.8–2.9]), high contamination level (OR 1.3 [1.0–1.6]), laparotomy (OR 1.3 [1.0–1.7]), previous laparotomy (OR 1.4 [1.1–1.7]), blood transfusion (OR 1.7 [1.2–2.4]), cancer (OR 1.3 [1.0–1.8] and malnutrition (OR 2.5 [1.8–3.4]). Conclusion Under elimination of relevant confounders, there is no significant correlation between sex and risk of SSI after abdominal surgery.
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- 2022
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30. The corticomotoneuronal system in amyotrophic lateral sclerosis
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Markus Weber
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- 2021
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31. Long-term outcomes of transplant kidneys donated after circulatory death
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Amélie K Müller, Eva Breuer, Kerstin Hübel, Kuno Lehmann, Pietro Cippà, Thomas Schachtner, Christian Oberkofler, Thomas Müller, Markus Weber, Philipp Dutkowski, Pierre-Alain Clavien, Olivier de Rougemont, and University of Zurich
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Death ,Transplantation ,Brain Death ,Tissue and Organ Procurement ,Nephrology ,Graft Survival ,Humans ,610 Medicine & health ,10035 Clinic for Nephrology ,Kidney ,Tissue Donors ,10217 Clinic for Visceral and Transplantation Surgery ,Retrospective Studies - Abstract
Background Donation after circulatory death (DCD) represents up to 40% of used kidney grafts. While studies have shown similar outcomes compared with donation after brain death (DBD) in the short term and mid-term, no data on long-term outcomes exist. Methods We retrospectively analysed patients transplanted at our institution between January 1985 and March 2000. All DCD recipients were matched one-to-one with patients transplanted with DBD grafts during this period according to sex, age and year of transplantation and followed up until December 2020. During this period, 1133 kidney transplantations were performed, of which 122 were with a DCD graft. Results The median graft survival after 35 years of follow-up was 23 years [277 months {95% confidence interval (CI) 182–372}] in DBD recipients and 24.5 years [289 months (95% CI 245–333)] in DCD recipients (P = 0.65; hazard ratio 0.91). Delayed graft function occurred in 47 patients in the DCD group compared with 23 in the DBD group (P < 0.001), albeit without a significant long-term outcome difference in graft or patient survival. We could not show any difference in graft function in terms of creatinine levels (133 versus 119 µmol/L), proteinuria (370 versus 240 mg/24 h) and glomerular filtration rate slope (–0.6 versus –0.3 mL/min/year) between the two groups for graft survival >20 years. Conclusions This is the first study to show similar graft survival and function in DCD kidneys compared with DBD kidneys after 35 years of follow-up. DCD grafts are a valuable resource and can be utilized in the same way as DBD grafts.
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- 2021
32. Loss of nucleoporin Nup50 is a risk factor for amyotrophic lateral sclerosis
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Jan H. Veldink, Edor Kabashi, Sylvie Dirrig-Grosch, Peter M Andersen, Najwa Ouali Alami, Luc Dupuis, Kirsten Sieverding, Axel Freischmidt, Natalia Mora, Albert C. Ludolph, Tobias M. Boeckers, Markus Margelisch, Philippe Couratier, Francesco Roselli, François Muratet, Andreas Sommacal, Chantal Sellier, Géraldine Lautrette, Erik Storkebaum, Markus Weber, Nick H.M. van Bakel, Stéphane Dieterlé, Stéphanie Millecamps, Kristel R. van Eijk, Jochen H. Weishaupt, Alberto Catanese, Kathrin Muller, Salim Megat, Xhuljana Mingaj, Christoph Neuwirth, Jason Sanogo, Hortense de Calbiac, and Deniz Yilmazer-Hanke
- Subjects
Genetics ,BCS1L ,RNA splicing ,Gene expression ,medicine ,RNA-binding protein ,Genome-wide association study ,Nucleoporin ,Amyotrophic lateral sclerosis ,Biology ,medicine.disease ,Gene - Abstract
The genetic basis of amyotrophic lateral sclerosis (ALS) is still incompletely understood. Using two independent genetic strategies, we show here that a large part of ALS heritability lies in genes expressed in inhibitory and excitatory neurons, especially at splicing sites regulated by a defined set of RNA binding proteins including TDP-43 and FUS. We conducted a transcriptome wide association study (TWAS) and identified 59 loci associated with ALS, including 14 previously identified genes, some of them not previously reaching significance in genome wide association studies. Among the 45 novel genes, several genes are involved in pathways known to be affected in ALS such as mitochondrial metabolism (including ATP5H, ATP5D, BCS1L), proteostasis (including COPS7A, G2E3, TMEM175, USP35) or gene expression and RNA metabolism (including ARID1B, ATXN3, PTBP2, TAF10). Interestingly, decreased expression of NUP50, a constrained gene encoding a nuclear pore basket protein, was associated with ALS in TWAS (Zscore = −4, FDR = 0.034). 11 potentially pathogenic variants (CADD score > 20) in 23 patients were identified in the NUP50 gene, most of them in the region of the protein mediating interaction with Importin alpha, and including 2 frameshift mutations. In cells from two patients carrying NUP50 variants, we showed decreased levels of NUP50 protein. Importantly, knocking down Nup50 led to increased neuronal death associated with p62 and nucleoporin inclusions in cultured neurons, and motor defects in Drosophila and zebrafish models. In all, our study identifies alterations in splicing in neurons as a critical pathogenic process in ALS, uncovers several new loci potentially contributing to ALS missing heritability, and provides genetic evidence linking nuclear pore defects to ALS.
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- 2021
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33. Genome-wide identification of the genetic basis of amyotrophic lateral sclerosis
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Sai Zhang, Johnathan Cooper-Knock, Annika K. Weimer, Minyi Shi, Tobias Moll, Jack N.G. Marshall, Calum Harvey, Helia Ghahremani Nezhad, John Franklin, Cleide dos Santos Souza, Ke Ning, Cheng Wang, Jingjing Li, Allison A. Dilliott, Sali Farhan, Eran Elhaik, Iris Pasniceanu, Matthew R. Livesey, Chen Eitan, Eran Hornstein, Kevin P. Kenna, Jan H. Veldink, Laura Ferraiuolo, Pamela J. Shaw, Michael P. Snyder, Ian Blair, Naomi R. Wray, Matthew Kiernan, Miguel Mitne Neto, Adriano Chio, Ruben Cauchi, Wim Robberecht, Philip van Damme, Philippe Corcia, Philippe Couratier, Orla Hardiman, Russell McLaughin, Marc Gotkine, Vivian Drory, Nicola Ticozzi, Vincenzo Silani, Leonard H. van den Berg, Mamede de Carvalho, Jesus S. Mora Pardina, Monica Povedano, Peter Andersen, Markus Weber, Nazli A. Başak, Ammar Al-Chalabi, Chris Shaw, Karen E. Morrison, John E. Landers, Jonathan D. Glass, and Project MinE ALS Sequencing Consortium
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Motor Neurons ,Cell Death ,General Neuroscience ,Amyotrophic Lateral Sclerosis ,Induced Pluripotent Stem Cells ,Cytoskeletal Proteins ,Amyotrophic lateral sclerosis -- Diagnosis ,Genes ,Machine learning ,Genetics ,Humans ,Epigenetics ,Nervous system -- Degeneration ,Adaptor Proteins, Signal Transducing ,Genome-Wide Association Study - Abstract
Amyotrophic lateral sclerosis (ALS) is a complex disease that leads to motor neuron death. Despite heritability estimates of 52%, genome-wide association studies (GWASs) have discovered relatively few loci. We developed a machine learning approach called RefMap, which integrates functional genomics with GWAS summary statistics for gene discovery. With transcriptomic and epigenetic profiling of motor neurons derived from induced pluripotent stem cells (iPSCs), RefMap identified 690 ALS-associated genes that represent a 5-fold increase in recovered heritability. Extensive conservation, transcriptome, network, and rare variant analyses demonstrated the functional significance of candidate genes in healthy and diseased motor neurons and brain tissues. Genetic convergence between common and rare variation highlighted KANK1 as a new ALS gene. Reproducing KANK1 patient mutations in human neurons led to neurotoxicity and demonstrated that TDP-43 mislocalization, a hallmark pathology of ALS, is downstream of axonal dysfunction. RefMap can be readily applied to other complex diseases., peer-reviewed
- Published
- 2021
34. Diskrepanz zwischen radiographischer und tatsächlicher Pfannenstellung bei der Hüft-TEP-Versorgung
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Joachim Grifka, Timo Schwarz, Markus Weber, Tobias Renkawitz, Felix Greimel, Franziska Leiss, and Jens Schaumburger
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Gynecology ,030222 orthopedics ,03 medical and health sciences ,medicine.medical_specialty ,0302 clinical medicine ,business.industry ,medicine ,Orthopedics and Sports Medicine ,business ,030218 nuclear medicine & medical imaging - Abstract
In der postoperativen Rontgenkontrolle nach Huft-TEP-Implantation erfolgt durch die Bestimmung der Komponentenstellung eine objektivierbare Qualitatskontrolle. Die Pfannenposition wird hierbei durch die Steilheit und die Drehung nach vorne beschrieben. Zwischen den radiographisch gemessenen Werten und der tatsachlichen (anatomischen) Pfannenstellung besteht jedoch eine Diskrepanz, die zu Fehlinterpretationen fuhren kann. Um die Diskrepanz zwischen tatsachlicher und radiographisch vermessener Pfannenstellung bildlich darzustellen, wurde in dem Video ein Pfannenhalter verwendet, an dem die Drehung nach vorne und die Pfannensteilheit winkelgenau eingestellt werden kann. Hierdurch kann die Pfannenposition (Anteversion und Inklination) in der radiographischen und anatomischen Definition naher erlautert werden. Der Zuschauer soll einen Eindruck bekommen, ab wann die radiologisch gemessenen Werte nur mit groser Vorsicht zu betrachten sind. In dem Video zeigt sich in der simulierten Rontgen- und Bildsequenz, dass bei gleichbleibender tatsachlicher Pfannensteilheit am Modell mit zunehmender Anteversion uber 20° die Inklination radiographisch flacher gemessen wird. Alleiniges Betrachten der radiographischen Winkelwerte der Anteversion und Inklination kann zu Fehlinterpretationen der tatsachlichen Pfannenstellung fuhren. In bildlicher Darstellung zeigen wir, dass eine unterschiedliche Pfannensteilheit und -drehung anhand der radiographischen Messwerte nicht sicher erkannt werden kann. Die wahre Pfannenposition in der anatomischen Definition lasst sich aus der radiographischen Position errechnen. Hierzu mussen jedoch beide Pfannenwerte (rad. Anteversion und rad. Inklination) berucksichtigt werden.
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- 2019
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35. Structure–Activity Relationship Studies of Pyridine-Based Ligands and Identification of a Fluorinated Derivative for Positron Emission Tomography Imaging of Cannabinoid Type 2 Receptors
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Christian Bartelmus, Markus Bürkler, Uwe Grether, Christoph Ullmer, Julian Kretz, Irene Knuesel, Ahmed Haider, Roger Schibli, Luca Gobbi, Hazem Ahmed, Linjing Mu, Markus Weber, Adrienne Müller Herde, Kenneth Atz, Michael Honer, Wolfgang Guba, Claudia Keller, Simon M. Ametamey, Jürgen Fingerle, and Andreas Brink
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Male ,Fluorine Radioisotopes ,Protein Conformation ,Pyridines ,Stereochemistry ,medicine.medical_treatment ,Neuroimaging ,Ligands ,Receptor, Cannabinoid, CB2 ,Mice ,Structure-Activity Relationship ,chemistry.chemical_compound ,Drug Discovery ,Pyridine ,Cyclic AMP ,medicine ,Animals ,Humans ,Structure–activity relationship ,Rats, Wistar ,Receptor ,Radiochemistry ,Molecular Structure ,medicine.diagnostic_test ,Brain ,Rats ,Mice, Inbred C57BL ,chemistry ,Positron emission tomography ,Positron-Emission Tomography ,Hepatocytes ,Molecular Medicine ,lipids (amino acids, peptides, and proteins) ,Cannabinoid ,Radiopharmaceuticals ,Derivative (chemistry) - Abstract
The cannabinoid type 2 (CB2) receptor has emerged as a valuable target for therapy and imaging of immune-mediated pathologies. With the aim to find a suitable radiofluorinated analogue of the previously reported CB2 positron emission tomography (PET) radioligand [
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- 2019
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36. HIGH SPEED SYNCHRONOUS RELUCTANCE DRIVES FOR MOTOR SPINDLES
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Markus Weber and Matthias Weigold
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Centrifugal force ,Electric motor ,Test bench ,Materials science ,Rotor (electric) ,business.industry ,Magnetic reluctance ,Mechanical Engineering ,Structural engineering ,Industrial and Manufacturing Engineering ,Clamping ,law.invention ,law ,Transversal (combinatorics) ,Automotive Engineering ,Electrical and Electronic Engineering ,Constant (mathematics) ,business - Abstract
This article presents a new design for setting up high speed synchronous reluctance motors (SynRM) in motor spindle applications for up to 30,000 rpm. The transversal laminated SynRM rotor package is supported by thin steel sheets and a shaft nut to exert a constant axial clamping force. Both, numerical and practical investigations are carried out using FEM-analysis and a test bench for centrifugal force load tests. The objective is to find out at which speed the elastic deformation changes into the plastic deformation. The beginning of plastic deformation is a failure criterion in electric motor construction.
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- 2019
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37. Misfolded SOD1 inclusions in patients with mutations in C9orf72 and other ALS/FTD-associated genes
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Peter M. Andersen, Thomas Brännström, Karin S. Graffmo, Martin Nielsen, Stefan L. Marklund, Markus Weber, Bente Pakkenberg, and Karin Forsberg
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Male ,amyotrophic lateral sclerosis ,Pathology ,Neurology ,Neurologi ,animal diseases ,chemistry.chemical_compound ,0302 clinical medicine ,C9orf72 ,KIF5A ,Amyotrophic lateral sclerosis ,Inclusion Bodies ,Motor Neurons ,Medulla Oblongata ,0303 health sciences ,Superoxide ,Motor Cortex ,Middle Aged ,superoxide dismutase-1 ,Psychiatry and Mental health ,neuronal inclusions ,Frontotemporal Dementia ,Female ,Neurovetenskaper ,Adult ,medicine.medical_specialty ,SOD1 ,03 medical and health sciences ,medicine ,Humans ,In patient ,Neurodegeneration ,Proteostasis Deficiencies ,Gene ,Aged ,030304 developmental biology ,business.industry ,Neurosciences ,nutritional and metabolic diseases ,medicine.disease ,nervous system diseases ,Genes ,nervous system ,chemistry ,Mutation ,Surgery ,Neurology (clinical) ,business ,030217 neurology & neurosurgery - Abstract
ObjectiveA hallmark of amyotrophic lateral sclerosis (ALS) caused by mutations in superoxide dismutase-1 (SOD1) are inclusions containing SOD1 in motor neurons. Here, we searched for SOD1-positive inclusions in 29 patients carrying ALS-linked mutations in six other genes.MethodsA panel of antibodies that specifically recognise misfolded SOD1 species were used for immunohistochemical investigations of autopsy tissue.ResultsThe 18 patients with hexanucleotide-repeat-expansions in C9orf72 had inclusions of misfolded wild type (WT) SOD1WT in spinal motor neurons. Similar inclusions were occasionally observed in medulla oblongata and in the motor cortex and frontal lobe. Patients with mutations in FUS, KIF5A, NEK1, ALSIN or VAPB, carried similar SOD1WT inclusions. Minute amounts of misSOD1WT inclusions were detected in 2 of 20 patients deceased from non-neurological causes and in 4 of 10 patients with other neurodegenerative diseases. Comparison was made with 17 patients with 9 different SOD1 mutations. Morphologically, the inclusions in patients with mutations in C9orf72HRE, FUS, KIF5A, NEK1, VAPB and ALSIN resembled inclusions in patients carrying the wildtype-like SOD1D90A mutation, whereas patients carrying unstable SOD1 mutations (A4V, V5M, D76Y, D83G, D101G, G114A, G127X, L144F) had larger skein-like SOD1-positive inclusions.Conclusions and relevanceAbundant inclusions containing misfolded SOD1WT are found in spinal and cortical motor neurons in patients carrying mutations in six ALS-causing genes other than SOD1. This suggests that misfolding of SOD1WT can be part of a common downstream event that may be pathogenic. The new anti-SOD1 therapeutics in development may have applications for a broader range of patients.
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- 2019
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38. Motor Unit Number Index (MUNIX) of hand muscles is a disease biomarker for adult spinal muscular atrophy
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René Günther, Andreas Hermann, Daniel Petzold, Christoph Neuwirth, Jan C. Koch, Paul Lingor, Nathalie Braun, Robert Untucht, and Markus Weber
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innervation [Hand] ,Adult ,Male ,Recruitment, Neurophysiological ,physiology [Hand] ,medicine.medical_specialty ,physiopathology [Muscular Atrophy, Spinal] ,050105 experimental psychology ,Muscular Atrophy, Spinal ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,Physiology (medical) ,medicine ,Humans ,0501 psychology and cognitive sciences ,ddc:610 ,Amyotrophic lateral sclerosis ,Muscle, Skeletal ,Aged ,Denervation ,physiology [Muscle, Skeletal] ,Hand muscles ,business.industry ,05 social sciences ,Motor unit number ,Spinal muscular atrophy ,Middle Aged ,innervation [Muscle, Skeletal] ,Hand ,medicine.disease ,SMA ,Sensory Systems ,Pathophysiology ,3. Good health ,physiology [Recruitment, Neurophysiological] ,Neurology ,Biomarker (medicine) ,Female ,Neurology (clinical) ,business ,diagnosis [Muscular Atrophy, Spinal] ,030217 neurology & neurosurgery - Abstract
Objective There is still insufficient knowledge about natural history in adult spinal muscular atrophy, thus valid markers for treatment and disease monitoring are urgently needed. Methods We studied hand muscle innervation pattern of 38 adult genetically confirmed 5q spinal muscular atrophy (SMA) patients by the motor unit number index (MUNIX) method. Data were compared to healthy controls and amyotrophic lateral sclerosis (ALS) patients and systematically correlated to typical disease-relevant scores and other clinical as well as demographic characteristics. Results Denervation of hand muscles in adult SMA was not evenly distributed. By calculation of the MUNIX ratios, we identified a specific hand muscle wasting pattern for SMA which is different to the split hand in ALS. Furthermore, MUNIX parameters strongly correlated with established disease course parameters independent of disease stages. Conclusion We found a pathophysiological remarkable denervation pattern of hand muscles, a ‘reversed split hand’. MUNIX of single hand muscles correlated well with disease severity and thus represents an easily available biomarker for adult SMA. Significance Our data show the power of the MUNIX method as a biomarker for upcoming questions in adult SMA.
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- 2019
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39. Pelvic tilt impacts cup orientation on CT: how accurate is the gold standard?
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Max Thieme, Moritz Kaiser, Achim Benditz, Markus Weber, Matthias König, and Tobias Renkawitz
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Pelvic tilt ,Cup orientation ,Arthroplasty, Replacement, Hip ,Computed tomography ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Prospective Studies ,030222 orthopedics ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,business.industry ,Acetabulum ,General Medicine ,Anterior pelvic plane ,Gold standard (test) ,Cup position ,Tomography ,Hip Prosthesis ,business ,Nuclear medicine ,Tomography, X-Ray Computed ,Total hip arthroplasty - Abstract
Background Computed tomography (CT) is the gold standard for the accurate measurement of cup inclination and anteversion in total hip arthroplasty (THA). However, functional cup position strongly depends on the tilt of the pelvis and thus pelvic tilt in the supine position on the CT table harbors the risk of misinterpretation. Purpose To evaluate the influence of pelvic tilt on cup measurements in postoperative CT scans. Material and Methods This is a secondary outcome analysis of a prospective study. In 123 patients undergoing THA, anatomic cup inclination and anteversion as measured on postoperative 3D-CT scans were compared between: (i) the anterior pelvic plane (APP) resembling neutral pelvic tilt; and (ii) the coronal plane representing the standard planes on CT. Furthermore, the effect of the variation on cup positions within Lewinnek’s safe zone in relation to the applied reference plane was assessed. Results Mean pelvic tilt in supine position was –3.5° ± 5.6°. This resulted in a mean difference for anteversion between APP und coronal plane of 2.1° ± 3.7° and of 2.1° ± 1.9° for cup inclination, respectively. The change varied up to 20.2° for cup inclination and up 12.2° for cup anteversion. The overall conversion rate for inclination and/or anteversion regarding Lewinnek’s safe zone was high at 23.6% (29/123). Conclusion Pelvic tilt affects cup orientation on CT scans depending on the applied reference plane. Standard CT planes should be corrected regarding pelvic tilt before measurements to avoid errors in measurement.
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- 2021
40. Rhabdomyolyse inexpliquée
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Sandra Hunziker, Katrin Frauenknecht, Markus Weber, and Lars C. Huber
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- 2021
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41. Unklare Rhabdomyolyse
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Sandra Hunziker, Katrin Frauenknecht, Markus Weber, and Lars C. Huber
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- 2021
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42. Plug-and-play laser ablation-mass spectrometry for molecular imaging by means of dielectric barrier discharge ionization
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Elias Lützen, Markus Weber, Sabrina K. I. Funke, Uwe Karst, Jan-Christoph Wolf, Christoph Haisch, and Valérie A. Brückel
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Laser ablation ,Capillary action ,Chemistry ,010401 analytical chemistry ,Analytical chemistry ,02 engineering and technology ,Dielectric barrier discharge ,021001 nanoscience & nanotechnology ,Mass spectrometry ,01 natural sciences ,Biochemistry ,Mass spectrometry imaging ,Mass Spectrometry ,0104 chemical sciences ,Analytical Chemistry ,Molecular Imaging ,Capillary Plasma ,Ionization ,Environmental Chemistry ,Sample preparation ,Laser Therapy ,0210 nano-technology ,Spectroscopy - Abstract
The plug-and-play hyphenation of UV-laser ablation (LA) and mass spectrometry is presented, using dielectric barrier discharge ionization (DBDI). The DBDI source employed here is characterized by its unique geometry, being directly mounted onto the inlet capillary of a mass spectrometer. In the literature, this particular kind of DBDI source is also referred to as active capillary plasma ionization. It has been commercialized as soft ionization by chemical reaction in transfer (SICRIT) and will be addressed as DBDI in this study. LA-DBDI-MS was used for the direct, molecule-specific and spatially resolved analysis of various solid samples, such as coffee beans and pain killer tablets without extensive sample preparation. The combination of fast washout UV-laser ablation and the principle of the DBDI source used here allowed for highly efficient soft ionization as well as high spatial resolution down to 10 μm for molecular imaging.
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- 2021
43. Hospital Frailty Risk Score predicts adverse events in revision total hip and knee arthroplasty
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Günther Maderbacher, Markus Weber, Matthias Meyer, Timo Schwarz, Tobias Renkawitz, and Joachim Grifka
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Reoperation ,medicine.medical_specialty ,Arthroplasty, Replacement, Hip ,medicine.medical_treatment ,Total hip replacement ,610 Medizin ,Logistic regression ,03 medical and health sciences ,Postoperative Complications ,Revision arthroplasty ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Retrospective analysis ,Humans ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,Risk factor ,Arthroplasty, Replacement, Knee ,Adverse effect ,Retrospective Studies ,Outcome ,Original Paper ,030222 orthopedics ,ddc:610 ,Framingham Risk Score ,Frailty ,business.industry ,Arthroplasty ,Hospitals ,Adverse events ,Orthopedic surgery ,Surgery ,HFRS ,business ,HFRS, Revision arthroplasty, Adverse events, Outcome, Frailty - Abstract
Introduction The Hospital Frailty Risk Score (HFRS) is a validated risk stratification model referring to the cumulative deficits model of frailty. The purpose of this study was to evaluate the HFRS as a predictor of 90-day readmission and complications after revision total hip (rTHA) and knee (rTKA) arthroplasty. Methods In a retrospective analysis of 565 patients who had undergone rTHA or rTKA between 2011 and 2019, the HFRS was calculated for each patient. Rates of adverse events were compared between patients with low and intermediate or high frailty risk. Multivariable logistic regression models were used to assess the relationship between the HFRS and post-operative adverse events. Results Patients with intermediate or high frailty risk showed higher rates of readmission (30days: 23.8% vs. 9.9%, p = 0.006; 90days: 26.2% vs. 13.0%, p < 0.018), surgical complications (28.6% vs. 7.8%, p < 0.001), medical complications (11.9% vs. 1.0%, p < 0.001), other complications (28.6% vs. 2.3%, p < 0.001), Clavien-Dindo grade IV complications (14.3% vs. 4.8%, p = 0.009), and transfusion (33.3% vs. 6.1%, p < 0.001). Multivariable logistic regression analyses revealed a high HFRS as independent risk factor for surgical complications (OR = 3.45, 95% CI 1.45-8.18, p = 0.005), medical complications (OR = 7.29, 95% CI 1.72-30.97, p = 0.007), and other complications (OR = 14.15, 95% CI 5.16-38.77, p < 0.001). Conclusion The HFRS predicts adverse events after rTHA and rTKA. As it derives from routinely collected data, the HFRS could be implemented automated in hospital information systems to facilitate identification of at-risk patients.
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- 2021
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44. Impact of malnutrition and vitamin deficiency in geriatric patients undergoing orthopedic surgery
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Matthias Meyer, Franziska Leiss, Felix Greimel, Tobias Renkawitz, Joachim Grifka, Günther Maderbacher, and Markus Weber
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Orthopedic surgery ,Aged, 80 and over ,Male ,Reoperation ,ddc:610 ,Malnutrition ,610 Medizin ,Avitaminosis ,Patient Readmission ,Postoperative Complications ,Risk Factors ,Humans ,Female ,Orthopedic Procedures ,RD701-811 ,Research Article ,Aged ,Retrospective Studies - Abstract
Background and purpose — There is growing evidence that hypoproteinemia is an important risk factor for adverse events after surgery. Less is known about the impact of vitamin deficiency on postoperative outcome. Therefore we evaluated the prevalence and impact of malnutrition and vitamin deficiency in geriatric patients undergoing elective orthopedic surgery. Patients and methods — In a retrospective analysis of 599 geriatric patients who had undergone elective orthopedic surgery in 2018 and 2019, hypoproteinemia, and deficiency of vitamin D, vitamin B12, and folate were assessed. Reoperation rates, readmission rates, complication rates, and transfusion rates were compared between malnourished patients and patients with normal parameters. Multivariable logistic regression models were used to assess the relationship between malnutrition and postoperative adverse events, controlling for confounding factors such as age, sex, diabetes mellitus, and frailty. Results — Patients with malnutrition showed a higher rate of reoperation (13% vs. 5.5%; p = 0.01) and exhibited more wound-healing disorders (7.4% vs. 1.3%, p = 0.001) as well as Clavien–Dindo IV° complications (7.4% vs. 2.4%; p = 0.03). Deficiency of vitamin D led to a higher rate of falls (8.4% vs. 2.9%, p = 0.006). Deficiency of vitamin B12 and folate did not affect postoperative adverse events. Although correlated to frailty (p = 0.004), multivariable regression analysis identified malnutrition as independent risk factor for reoperation (OR 2.6, 95% CI 1.1–6.2) and wound healing disorders (OR 7.1, CI 1.9–26). Interpretation — Malnutrition is common among geriatric patients undergoing elective orthopedic surgery and represents an independent risk factor for postoperative adverse events.
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- 2021
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45. Postoperative delirium is a risk factor for complications and poor outcome after total hip and knee arthroplasty
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Günther Maderbacher, Tobias Renkawitz, Matthias Meyer, Markus Weber, J. Götz, Tobias Kappenschneider, Joachim Grifka, and Lukas Parik
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musculoskeletal diseases ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Arthroplasty, Replacement, Hip ,MEDLINE ,Total hip replacement ,610 Medizin ,Outcome (game theory) ,Postoperative Complications ,Risk Factors ,Health care ,medicine ,Humans ,Orthopedics and Sports Medicine ,Postoperative delirium ,Patient Reported Outcome Measures ,Postoperative Period ,Risk factor ,Arthroplasty, Replacement, Knee ,Aged ,Retrospective Studies ,Orthopedic surgery ,Aged, 80 and over ,ddc:610 ,business.industry ,Delirium ,General Medicine ,musculoskeletal system ,Arthroplasty ,surgical procedures, operative ,Demographic change ,Emergency medicine ,Surgery ,Female ,sense organs ,business ,RD701-811 ,Research Article - Abstract
Background and purpose ��� Improving health care and demographic change have resulted in a steady increase in geriatric patients undergoing total hip (THA) and knee (TKA) arthroplasty. Postoperative delirium (POD) is a frequent and severe complication after major surgery. Therefore, we analyzed the impact of POD on outcome after THA and TKA. Patients and methods ��� In a consecutive series of 10,140 patients who had undergone elective THA or TKA between 2011 and 2020, rates of reoperation within 90 days, readmission within 90 days, complications, and responder rate as defined by the OMERACT-OARSI criteria were compared between patients with and without POD. Multivariable logistic regression models were used to assess the relationship between POD and other postoperative complications. Results ��� Patients with POD showed higher rates of reoperation (12% vs. 5%), readmission (15% vs. 5%), surgical complications (7% vs. 2%), non-surgical complications (8% vs. 4%), Clavien���Dindo IV�� complications (10% vs. 2%) and transfusion (14% vs. 2%). POD led to lower responder rate (76% vs. 87%) 1 year after total joint replacement. All previous comparisons statistically significant. Multivariable logistic regression analyses revealed POD as an independent risk factor for reoperation (OR = 2; CI 1���3), readmission (OR = 2; CI 2���4) and Clavien���Dindo IV�� complications (OR = 3; CI 2���5). Interpretation ��� POD is a serious problem in elective joint replacement. Affected patients suffer more complications and show poor patient-reported outcome 1 year postoperatively. Systematic prevention strategies and standardized therapy protocols are mandatory to avoid burden to patients and healthcare providers.
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- 2021
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46. Pros and cons of navigated versus conventional total knee arthroplasty—a retrospective analysis of over 2400 patients
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Matthias Meyer, Joachim Grifka, Tobias Renkawitz, Markus Weber, Achim Benditz, and Florian Völlner
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musculoskeletal diseases ,medicine.medical_specialty ,WOMAC ,Complications ,Knee Joint ,medicine.medical_treatment ,610 Medizin ,Periprosthetic ,Osteoarthritis ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Orthopedics and Sports Medicine ,Knee Arthroplasty ,Arthroplasty, Replacement, Knee ,Retrospective Studies ,Alignment ,Outcome ,030222 orthopedics ,ddc:610 ,business.industry ,Retrospective cohort study ,Responder ,030229 sport sciences ,General Medicine ,Osteoarthritis, Knee ,medicine.disease ,Arthroplasty ,Navigation ,Surgery ,Treatment Outcome ,Surgery, Computer-Assisted ,Total knee arthroplasty ,Orthopedic surgery ,Cohort ,Total knee arthroplasty · Navigation · Alignment · Outcome · Complications · Responder ,business ,Complication - Abstract
Introduction Because of the ongoing discussion of imageless navigation in total knee arthroplasty (TKA), its advantages and disadvantages were evaluated in a large patient cohort. Methods This retrospective analysis included 2464 patients who had undergone TKA at a high-volume university arthroplasty center between 2012 and 2017. Navigated and conventional TKA were compared regarding postoperative mechanical axis, surgery duration, complication rates, one-year postoperative patient-reported outcome measures (PROMs) (WOMAC and EQ-5D indices), and responder rates as defined by the criteria of the Outcome Measures in Rheumatology and Osteoarthritis Research Society International consensus (OMERACT-OARSI). Results Both navigated (1.8 ± 1.6°) and conventional TKA (2.1 ± 1.6°, p = 0.002) enabled the exact reconstruction of mechanical axis. Surgery duration was six minutes longer for navigated TKA than for conventional TKA (p p = 0.39), joint infection (p = 0.42 and thromboembolic events (p = 0.03). Periprosthetic fractures occurred more frequently during conventional TKA (p = 0.001). One-year PROMs showed excellent improvement in both groups. The WOMAC index was statistically higher for navigated TKA than for conventional TKA (74.7 ± 19.0 vs. 71.7 ± 20.7, p = 0.014), but the increase was not clinically relevant. Both groups had a similarly high EQ-5D index (0.23 ± 0.24 vs. 0.26 ± 0.25, p = 0.11) and responder rate (86.5% [256/296] vs. 85.9% [981/1142], p = 0.92). Conclusion Both methods enable accurate postoperative leg alignment with low complication rates and equally successful PROMs and responder rates one year postoperatively. Level of evidence III. Retrospective cohort study.
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- 2021
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47. Radiologie der Gewalt
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Isabella Klasinc, Tanja Germerott, Ina Clasen, Mathies Breithaupt, Alexander Bornik, Martin Stenzel, Heinz-Peter Schlemmer, Kathrin Ogris, L. Oesterhelweg, Anna Heger, Ignaz Reicht, Roman Bux, Reinhard B. Dettmeyer, Sarah Heinze, Lena Maier-Hein, Clara-Sophie Schwarz, Sabine Schmid, Silke Grabherr, Thomas Widek, Markus Weber, Martin Urschler, David Simons, Marco Nolden, Axel Heinemann, Richard Dirnhofer, Kathrin Yen, Reingard Riener-Hofer, Katarzyna Michaud, Michael Tsokos, Thorsten Schwark, Michael T. Mund, Diana Nabers, Michael Pfeifer, Martine Schaul, Britta Gahr, Markus Große Perdekamp, Michael Pfleiderer, Philip Glemser, Caspar J. Goch, Eva Hassler, Martin Grassberger, Hansjürgen Bratzke, Paul Klinguer, Hubert Mara, Eva Scheurer, Astrid Krauskopf, Stefanie Ritz-Timme, and Pia Genet
- Subjects
Radiation therapy ,business.industry ,medicine.medical_treatment ,Medical imaging ,Medicine ,business ,Nuclear medicine - Published
- 2021
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48. Genome-wide study of DNA methylation in Amyotrophic Lateral Sclerosis identifies differentially methylated loci and implicates metabolic, inflammatory and cholesterol pathways
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Orla Hardiman, Karen E. Morrison, Johnathan Cooper-Knock, Susan Mathers, Matthieu Moisse, Kevin P. Kenna, Michal Zabari, Ruben J. Cauchi, Jonathan Mill, Maurizio Grassano, Paul J. Hop, de Carvalho M, Allan F. McRae, John Landers, Heiko Runz, Basak An, Lerner Y, Mònica Povedano, Drory, Patrick Vourc'h, Philippe Couratier, van Rheenen W, Jan H. Veldink, Denis Baird, Antonia Ratti, Van Damme P, Garth A. Nicholson, Andrea Calvo, van Vugt Jj, Nicola Ticozzi, Eilis Hannon, Antonio Canosa, Silani, Matthew C. Kiernan, Ian P. Blair, Guy A. Rouleau, Mitne Neto M, Kelly L. Williams, Christopher Shaw, Emma Walker, Markus Weber, Frederik J. Steyn, Anjali K. Henders, Peter M. Andersen, Marta F. Nabais, Henk-Jan Westeneng, Dominic B. Rowe, Ramona A. J. Zwamborn, Salas T, Susana Pinto, Shyuan T. Ngo, van den Berg Lh, Sarah Furlong, Adriano Chiò, Mora Pardina Js, Marc Gotkine, Leanne Wallace, Al Khleifat A, Naomi R. Wray, Tian Lin, Roger Pamphlett, Ellen A. Tsai, Alfredo Iacoangeli, Gijs H.P. Tazelaar, Robert D. Henderson, van Es Ma, Pamela J. Shaw, Annelot M. Dekker, Ammar Al-Chalabi, Pamela A. McCombe, Maura Brunetti, Merrilee Needham, Philippe Corcia, Karen A. Mather, Gemma Shireby, Jay P. Ross, Russell L. McLaughlin, Pasterkamp Rj, van Eijk Kr, Patrick A. Dion, Cristina Moglia, Perminder S. Sachdev, and Fleur C. Garton
- Subjects
Genetics ,Genome-wide association study ,Disease ,Biology ,medicine.disease ,Genome ,Blood cell ,medicine.anatomical_structure ,White blood cell ,DNA methylation ,Brain MEND Consortium ,medicine ,BIOS Consortium ,Amyotrophic lateral sclerosis ,Gene - Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with an estimated heritability of around 50%. DNA methylation patterns can serve as biomarkers of (past) exposures and disease progression, as well as providing a potential mechanism that mediates genetic or environmental risk. Here, we present a blood-based epigenome-wide association study (EWAS) meta-analysis in 10,462 samples (7,344 ALS patients and 3,118 controls), representing the largest case-control study of DNA methylation for any disease to date. We identified a total of 45 differentially methylated positions (DMPs) annotated to 42 genes, which are enriched for pathways and traits related to metabolism, cholesterol biosynthesis, and immunity. We show that DNA-methylation-based proxies for HDL-cholesterol, BMI, white blood cell (WBC) proportions and alcohol intake were independently associated with ALS. Integration of these results with our latest GWAS showed that cholesterol biosynthesis was causally related to ALS. Finally, we found that DNA methylation levels at several DMPs and blood cell proportion estimates derived from DNA methylation data, are associated with survival rate in patients, and could represent indicators of underlying disease processes.
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- 2021
49. Interdisciplinary approach in emergency revascularization and treatment for acute mesenteric ischemia
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Nicolas Attigah, Markus Weber, Hans Bruijnen, Anja-Rebeka Domenghino, Annelies Schnider, Igor Schwegler, Stefan Gutknecht, and Alicja Zientara
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medicine.medical_specialty ,Emergency Medical Services ,medicine.medical_treatment ,lcsh:Surgery ,Physical examination ,Bowel resection ,030204 cardiovascular system & hematology ,Revascularization ,Acute mesenteric ischemia ,03 medical and health sciences ,0302 clinical medicine ,Mesenteric Artery, Superior ,medicine.artery ,Clinical endpoint ,Medicine ,Humans ,Superior mesenteric artery ,Iliac-mesenteric bypass ,Retrospective Studies ,Patient Care Team ,Intestinal ischemia ,medicine.diagnostic_test ,business.industry ,Mesenteric revascularization ,General Medicine ,Explorative laparotomy ,lcsh:RD1-811 ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Treatment Outcome ,Mesenteric ischemia ,030220 oncology & carcinogenesis ,Mesenteric Ischemia ,Acute Disease ,Thrombembolectomy of superior mesenteric artery ,business ,Vascular Surgical Procedures ,Artery ,Research Article - Abstract
Background Mesenteric ischemia is associated with poor outcome and high overall mortality. The aim was to analyze an interdisciplinary treatment approach of vascular and visceral specialists focusing on the in-hospital outcome and follow-up in patients with acute and acute-on-chronic mesenteric ischemia. Methods From 2010 until 2017, 26 consecutive patients with acute or acute on chronic mesenteric ischemia were treated by an interdisciplinary team. Data were prospectively collected and retrospectively evaluated. Throughout the initial examination, the extent of bowel resection was determined by the visceral surgeon and the appropriate mode of revascularization by the vascular surgeon. The routine follow-up included clinical examination and ultrasound- or CT-imaging for patency assessment and overall survival as primary endpoint of the study. Results Out of 26 patients, 18 (69.2%) were rendered for open repair. Ten patients (38.5%) received reconstruction of the superior mesenteric artery with an iliac-mesenteric bypass. Seven patients (26.9%) underwent thrombembolectomy of the mesenteric artery. One patient received an infra-diaphragmatic aorto-celiac-mesenteric bypass. Out of the 8 patients, who were not suitable for open revascularization, 2 patients (7.7%) were treated endovascularly and 6 (23.1%) underwent explorative laparotomy. The in-hospital mortality was 23% (n = 6). The mean survival of the revascularized group (n = 20) was 51.8 months (95% CI 39.1–64.5) compared to 15.7 months in the non-revascularized group (n = 6) (95% CI − 4.8–36.1; p = 0.08). The median follow-up was 64.6 months. Primary patency in the 16 patients after open and 2 after interventional revascularization was 100% and 89.9% in the follow-up. Conclusion The interdisciplinary treatment of mesenteric ischemia improves survival if carried out in time. Hereby open revascularization measures are advantageous as they allow bowel assessment, resection, and revascularization in a one-stop fashion especially in advanced cases.
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- 2020
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50. Numerical analysis of a MEMS sensor's deformation behavior considering dynamic moisture conditions
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Peter Filipp Fuchs, Tao Qi, Markus Weber, Thomas Antretter, and Mahesh Yalagach
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010302 applied physics ,Microelectromechanical systems ,Materials science ,Moisture ,business.industry ,020208 electrical & electronic engineering ,Composite number ,Automotive industry ,Mechanical engineering ,02 engineering and technology ,Deformation (meteorology) ,01 natural sciences ,Capacitance ,Thermal expansion ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronics ,business - Abstract
Micro Electro Mechanical Semiconductors (MEMS) functionalities have been continuously extended during the last years, and they are applied in a wide range of industrial sectors, including the automotive, consumer electronics, and Internet of Things (IoT) markets. These MEMS sensor packages are a multi-materials composite system. The composite materials involved in MEMS sensor packages show significant effects like thermal expansion and hygroscopic swelling when exposed to environmental loads like temperature and moisture. Due to these effects, the MEMS sensing performance is affected. To understand the effects on sensing performance and mechanical behavior, an advanced simulation approach, “hygro-thermo-mechanical simulation,” needs to be accounted for. This approach considers not only the dynamic changes in temperature and moisture loads but also generalized solubility, which is a function of both temperature and saturated mass concentration. This numerical model helps in optimizing and understanding the sensing performance of the MEMS sensor packages.
- Published
- 2020
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