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Kraus J, Meingast L, Hald J, Beil SB, Biskupek J, Ritterhoff CL, Gsänger S, Eisenkolb J, Meyer B, Kaiser U, Maultzsch J, von Delius M. Simultaneous Inside and Outside Functionalization of Single-Walled Carbon Nanotubes. Angew Chem Int Ed Engl 2024; 63:e202402417. [PMID: 38489608 DOI: 10.1002/anie.202402417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 03/17/2024]
Abstract
Functionalizing single-walled carbon nanotubes (SWCNTs) in a robust way that does not affect the sp2 carbon framework is a considerable research challenge. Here we describe how triiodide salts of positively charged macrocycles can be used not only to functionalize SWCNTs from the outside, but simultaneously from the inside. We employed disulfide exchange in aqueous solvent to maximize the solvophobic effect and therefore achieve a high degree of macrocycle immobilization. Characterization by Raman spectroscopy, EDX-STEM and HR-TEM clearly showed that serendipitously this wet-chemical functionalization procedure also led to the encapsulation of polyiodide chains inside the nanotubes. The resulting three-shell composite materials are redox-active and experience an intriguing interplay of electrostatic, solvophobic and mechanical effects that could be of interest for applications in energy storage.
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Affiliation(s)
- Jan Kraus
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Laura Meingast
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058, Erlangen, Germany
| | - Janina Hald
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sebastian B Beil
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Johannes Biskupek
- Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Christian L Ritterhoff
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer Chemistry Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Sebastian Gsänger
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer Chemistry Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Jasmin Eisenkolb
- Department of Chemistry and Pharmacy and Center of Advanced Materials and Processes (ZMP), Friedrich-Alexander-Universität Erlangen-Nürnberg, Dr.-Mack-Str. 81, 90762, Fürth, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer Chemistry Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Ute Kaiser
- Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Janina Maultzsch
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058, Erlangen, Germany
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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Santos TM, Lordano S, Mayer RA, Volpe L, Rodrigues GM, Meyer B, Westfahl H, Freitas RO. Synchrotron infrared nanospectroscopy in fourth-generation storage rings. J Synchrotron Radiat 2024; 31:547-556. [PMID: 38630437 DOI: 10.1107/s1600577524002364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/12/2024] [Indexed: 05/08/2024]
Abstract
Fourth-generation synchrotron storage rings represent a significant milestone in synchrotron technology, offering outstandingly bright and tightly focused X-ray beams for a wide range of scientific applications. However, due to their inherently tight magnetic lattices, these storage rings have posed critical challenges for accessing lower-energy radiation, such as infrared (IR) and THz. Here the first-ever IR beamline to be installed and to operate at a fourth-generation synchrotron storage ring is introduced. This work encompasses several notable advancements, including a thorough examination of the new IR source at Sirius, a detailed description of the radiation extraction scheme, and the successful validation of our optical concept through both measurements and simulations. This optimal optical setup has enabled us to achieve an exceptionally wide frequency range for our nanospectroscopy experiments. Through the utilization of synchrotron IR nanospectroscopy on biological and hard matter samples, the practicality and effectiveness of this beamline has been successfully demonstrated. The advantages of fourth-generation synchrotron IR sources, which can now operate with unparalleled stability as a result of the stringent requirements for producing low-emittance X-rays, are emphasized.
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Affiliation(s)
- Thiago M Santos
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Sérgio Lordano
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Rafael A Mayer
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Lucas Volpe
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Gustavo M Rodrigues
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Bernd Meyer
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Harry Westfahl
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Raul O Freitas
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
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Ryba A, Özdemir Z, Nissimov N, Hönikl L, Neidert N, Jakobs M, Kalasauskas D, Krigers A, Thomé C, Freyschlag CF, Ringel F, Unterberg A, Dao Trong P, Beck J, Heiland DH, Meyer B, Vajkoczy P, Onken J, Stummer W, Suero Molina E, Gempt J, Westphal M, Schüller U, Mohme M. Insights from a Multicenter Study on Adult H3 K27M-Mutated Glioma: Surgical Resection's Limited Influence on Overall Survival, ATRX as Molecular Prognosticator. Neuro Oncol 2024:noae061. [PMID: 38507506 DOI: 10.1093/neuonc/noae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND H3 K27M-mutated gliomas were first described as a new grade 4 entity in the 2016 WHO classification. Current studies have focused on its typical appearance in children and young adults, increasing the need to better understand the prognostic factors and impact of surgery on adults. Here, we report a multicentric study of this entity in adults. METHODS We included molecularly confirmed H3 K27M-mutated glioma cases in patients >18 years diagnosed between 2016 and 2022. Clinical, radiological, and surgical features were analyzed. Univariate and multivariate analyses were performed to identify prognostic factors. RESULTS Among 70 patients with a mean age of 36.1 years, the median overall survival (OS) was 13.6 + 14 months. Gross-total resection was achieved in 14.3% of patients, whereas 30% had a subtotal resection and 54.3% a biopsy.Tumors located in telencephalon/diencephalon/myelencephalon were associated with a poorer OS, while a location in the mesencephalon/metencephalon showed a significantly longer OS (8.7 vs. 25.0 months, p=0.007). Preoperative Karnofsky Performance Score (KPS) < 80 showed a reduced OS (4.2 vs. 18 months, p=0.02). Furthermore, ATRX loss, found in 25.7%, was independently associated with an increased OS (31 vs. 8.3 months, p=0.0029). Notably, patients undergoing resection showed no survival benefit over biopsy (12 vs. 11 months, p=0.4006). CONCLUSION The present study describes surgical features of H3 K27M-mutated glioma in adulthood in a large multicentric study. Our data reveal that ATRX status, location and KPS significantly impact OS in H3 K27M-mutated glioma. Importantly, our dataset indicates that resection does not offer a survival advantage over biopsy.
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Affiliation(s)
- A Ryba
- Department of Neurosurgery, Medical Center Hamburg-Eppendorf, Germany
| | - Z Özdemir
- Department of Neurosurgery, University Hospital of Münster, Germany
| | - N Nissimov
- Department of Neurosurgery, Charité University Hospital Berlin, Germany
| | - L Hönikl
- Department of Neurosurgery, Technical University Munich, Germany
| | - N Neidert
- Department of Neurosurgery, Medical Center - University of Freiburg, Germany
| | - M Jakobs
- Department of Neurosurgery, Heidelberg University Hospital, Germany
- Department of Neurosurgery, Division of Stereotactic Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg University, Medical Faculty, Heidelberg, Germany
| | - D Kalasauskas
- Department of Neurosurgery, University Medical Center Mainz, Germany
| | - A Krigers
- Department of Neurosurgery, Medical University of Innsbruck, Austria
| | - C Thomé
- Department of Neurosurgery, Medical University of Innsbruck, Austria
| | - C F Freyschlag
- Department of Neurosurgery, Medical University of Innsbruck, Austria
| | - F Ringel
- Department of Neurosurgery, University Medical Center Mainz, Germany
| | - A Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, Germany
- Heidelberg University, Medical Faculty, Heidelberg, Germany
| | - P Dao Trong
- Department of Neurosurgery, Heidelberg University Hospital, Germany
- Heidelberg University, Medical Faculty, Heidelberg, Germany
| | - J Beck
- Department of Neurosurgery, Medical Center - University of Freiburg, Germany
| | - D H Heiland
- Department of Neurosurgery, Medical Center - University of Freiburg, Germany
| | - B Meyer
- Department of Neurosurgery, Technical University Munich, Germany
| | - P Vajkoczy
- Department of Neurosurgery, Charité University Hospital Berlin, Germany
| | - J Onken
- Department of Neurosurgery, Charité University Hospital Berlin, Germany
| | - W Stummer
- Department of Neurosurgery, University Hospital of Münster, Germany
| | - E Suero Molina
- Department of Neurosurgery, University Hospital of Münster, Germany
| | - J Gempt
- Department of Neurosurgery, Medical Center Hamburg-Eppendorf, Germany
| | - M Westphal
- Department of Neurosurgery, Medical Center Hamburg-Eppendorf, Germany
| | - U Schüller
- Institute of Neuropathology, Medical Center Hamburg-Eppendorf, Germany
- Department of Pediatric Hematology and Oncology, Medical Center Hamburg-Eppendorf, Germany
- Research Institute Children's Cancer Center Hamburg, Germany
| | - M Mohme
- Department of Neurosurgery, Medical Center Hamburg-Eppendorf, Germany
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Schulze EJ, Ritterhoff CL, Franz E, Tavlui O, Brummel O, Meyer B, Hirsch A. Synthesis and Characterization of Bola-Amphiphilic Porphyrin-Perylenebisimide Architectures. Chemistry 2024; 30:e202303515. [PMID: 38200652 DOI: 10.1002/chem.202303515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Indexed: 01/12/2024]
Abstract
We report on the synthesis and characterization of a family of three water-soluble bola-amphiphilic zinc-porphyrin-perylenebisimide triads containing oligo carboxylic-acid capped Newkome dendrons in the periphery. Variations of the perylenebisimide (PBI) core geometry and dendron size (G1 and G2 dendrons with 3- and 9-carboxylic acid groups respectively) allow for tuning the supramolecular aggregation behavior with respect to variation of the molecular architecture. The triads show good solubility in basic aqueous media and aggregation to supramolecular assemblies. Theoretical investigations at the DFT level of theory accompanied by electrochemical measurements unravel the geometric and electronic structure of the amphiphiles. UV/Vis and fluorescence titrations with varying amounts of THF demonstrate disaggregation.
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Affiliation(s)
- Erik J Schulze
- Department of Chemistry & Pharmacy, Chair of Organic Chemistry II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
| | - Christian L Ritterhoff
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer Chemistry Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Evanie Franz
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058, Erlangen, Germany
| | - Olha Tavlui
- Department of Chemistry & Pharmacy, Chair of Organic Chemistry II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
| | - Olaf Brummel
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058, Erlangen, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer Chemistry Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Andreas Hirsch
- Department of Chemistry & Pharmacy, Chair of Organic Chemistry II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
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Kar R, Mandal S, Thakkur V, Meyer B, Nair NN. Speeding-up Hybrid Functional-Based Ab Initio Molecular Dynamics Using Multiple Time-stepping and Resonance-Free Thermostat. J Chem Theory Comput 2023; 19:8351-8364. [PMID: 37933121 DOI: 10.1021/acs.jctc.3c00964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Ab initio molecular dynamics (AIMD) based on density functional theory (DFT) has become a workhorse for studying the structure, dynamics, and reactions in condensed matter systems. Currently, AIMD simulations are primarily carried out at the level of generalized gradient approximation (GGA), which is at the second rung of DFT functionals in terms of accuracy. Hybrid DFT functionals, which form the fourth rung in the accuracy ladder, are not commonly used in AIMD simulations as the computational cost involved is 100 times or higher. To facilitate AIMD simulations with hybrid functionals, we propose here an approach using multiple time stepping with adaptively compressed exchange operator and resonance-free thermostat, that could speed up the calculations by ∼30 times or more for systems with a few hundred of atoms. We demonstrate that by achieving this significant speed up and making the compute time of hybrid functional-based AIMD simulations at par with that of GGA functionals, we are able to study several complex condensed matter systems and model chemical reactions in solution with hybrid functionals that were earlier unthinkable to be performed.
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Affiliation(s)
- Ritama Kar
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur 208016, India
| | - Sagarmoy Mandal
- Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nägelsbachstr. 25, Erlangen 91052, Germany
- Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 1, Erlangen 91058, Germany
| | - Vaishali Thakkur
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur 208016, India
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nägelsbachstr. 25, Erlangen 91052, Germany
- Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 1, Erlangen 91058, Germany
| | - Nisanth N Nair
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur 208016, India
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Clark MS, Hoffman JI, Peck LS, Bargelloni L, Gande D, Havermans C, Meyer B, Patarnello T, Phillips T, Stoof-Leichsenring KR, Vendrami DLJ, Beck A, Collins G, Friedrich MW, Halanych KM, Masello JF, Nagel R, Norén K, Printzen C, Ruiz MB, Wohlrab S, Becker B, Dumack K, Ghaderiardakani F, Glaser K, Heesch S, Held C, John U, Karsten U, Kempf S, Lucassen M, Paijmans A, Schimani K, Wallberg A, Wunder LC, Mock T. Multi-omics for studying and understanding polar life. Nat Commun 2023; 14:7451. [PMID: 37978186 PMCID: PMC10656552 DOI: 10.1038/s41467-023-43209-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
Polar ecosystems are experiencing amongst the most rapid rates of regional warming on Earth. Here, we discuss 'omics' approaches to investigate polar biodiversity, including the current state of the art, future perspectives and recommendations. We propose a community road map to generate and more fully exploit multi-omics data from polar organisms. These data are needed for the comprehensive evaluation of polar biodiversity and to reveal how life evolved and adapted to permanently cold environments with extreme seasonality. We argue that concerted action is required to mitigate the impact of warming on polar ecosystems via conservation efforts, to sustainably manage these unique habitats and their ecosystem services, and for the sustainable bioprospecting of novel genes and compounds for societal gain.
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Affiliation(s)
- M S Clark
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - J I Hoffman
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany.
| | - L S Peck
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - L Bargelloni
- Department of Comparative Biomedicine and Food Science, Università degli Studi di Padova, Viale dell'Università 16, I-35020, Legnaro, Italy
| | - D Gande
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - C Havermans
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - B Meyer
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Oldenburg, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), 23129, Oldenburg, Germany
| | - T Patarnello
- Department of Comparative Biomedicine and Food Science, Università degli Studi di Padova, Viale dell'Università 16, I-35020, Legnaro, Italy
| | - T Phillips
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - K R Stoof-Leichsenring
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, 14473, Potsdam, Germany
| | - D L J Vendrami
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
| | - A Beck
- Staatliche Naturwissenschaftliche Sammlungen Bayerns, Botanische Staatssammlung München (SNSB-BSM), Menzinger Str. 67, 80638, München, Germany
| | - G Collins
- Senckenberg Biodiversity and Climate Research Centre & Loewe-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
- Manaaki Whenua-Landcare Research, 231 Morrin Road St Johns, Auckland, 1072, New Zealand
| | - M W Friedrich
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - K M Halanych
- Center for Marine Science, University of North Carolina, 5600 Marvin K. Moss Lane, Wilmington, NC, 28409, USA
| | - J F Masello
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
- Justus-Liebig-Universität Gießen, Giessen, Germany
| | - R Nagel
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
- School of Biology, University of St Andrews, St Andrews, Fife, KY16 9TH, UK
| | - K Norén
- Department of Zoology, Stockholm University, 106 91, Stockholm, Sweden
| | - C Printzen
- Senckenberg Biodiversity and Climate Research Centre & Loewe-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
- Natural History Museum Frankfurt, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
| | - M B Ruiz
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Universität Duisburg-Essen, Universitätstrasse 5, 45151, Essen, Germany
| | - S Wohlrab
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), 23129, Oldenburg, Germany
| | - B Becker
- Universität zu Köln, Institut für Pflanzenwissenschaften, Zülpicher Str. 47b, 60674, Köln, Germany
| | - K Dumack
- Universität zu Köln, Terrestrische Ökologie, Zülpicher Str. 47b, 60674, Köln, Germany
| | - F Ghaderiardakani
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstraße 8, 07743, Jena, Germany
| | - K Glaser
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - S Heesch
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - C Held
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - U John
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - U Karsten
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - S Kempf
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - M Lucassen
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - A Paijmans
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
| | - K Schimani
- Botanischer Garten und Botanisches Museum Berlin, Freie Universität Berlin, Königin-Luise-Straße 6-8, 14195, Berlin, Germany
| | - A Wallberg
- Department of Medical Biochemistry and Microbiology, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | - L C Wunder
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - T Mock
- School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
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7
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Buchner JA, Kofler F, Mayinger MC, Brunner TB, Wittig A, Menze B, Zimmer C, Meyer B, Guckenberger M, Andratschke N, Shafie RE, Rogers S, Schulze K, Blanck O, Zamboglou C, Grosu A, Combs SE, Bernhardt D, Wiestler B, Peeken JC. What MRI Sequences are Necessary for Automated Neural Network-Based Metastasis Segmentation - An Ablation Study. Int J Radiat Oncol Biol Phys 2023; 117:e704-e705. [PMID: 37786065 DOI: 10.1016/j.ijrobp.2023.06.2195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Brain metastasis (BM) delineation is a time-consuming process in both daily clinical practice and research. Automated BM segmentation algorithms can be used to assist in this task. Most approaches to brain tumor segmentation, such as algorithms trained on the BraTS challenge, use four magnetic resonance imaging (MRI) sequences as input, making them susceptible to missing or corrupted sequences and increase the number of sequences necessary for MRI RT planning. The goal of this project is to compare neural networks with different combinations of input sequences for the segmentation of the contrast-enhancing metastasis and the surrounding FLAIR hyperintense edema. All models were tested in a multicenter international external test cohort. This allows us to determine which MRI sequences are needed for effective automated segmentations. MATERIALS/METHODS In total, we had T1-weighted sequences without (T1) and with contrast enhancement (T1-CE), T2-weighted sequences (T2), and T2 fluid-attenuated inversion recovery (FLAIR) sequences from 339 patients with at least one brain metastasis from seven centers available. Preprocessing yielded co-registered, skull-stripped sequences with an isotropic resolution of 1 millimeter. The contrast-enhancing metastasis as well as the surrounding FLAIR hyperintense edema were manually segmented to create reference labels. A baseline 3D U-Net with all four sequences as well as six additional U-Nets with different clinically plausible combinations (T1-CE; T1; FLAIR; T1-CE+FLAIR; T1-CE+T1+FLAIR; T1-CE+T1) of input sequences were trained on a cohort of 239 patients from two centers and subsequently tested on an external cohort of 100 patients from the remaining five centers. RESULTS All models that included T1-CE in their selected sequences showed similar performance for metastasis segmentation with a median Dice similarity coefficient (DSC) of 0.93-0.96. T1-CE alone likewise achieved a performance of 0.96 (IQR 0.93-0.97). The model trained with only FLAIR performed worse (DSC = 0.73, IQR 0.54-0.84). For edema segmentation, models that included both T1-CE and FLAIR performed best (median DSC = 0.93), while the remaining four models without simultaneous inclusion of these two sequences (T1-CE; T1; FLAIR; T1-CE+T1) reached a median DSC of 0.81-0.89. CONCLUSION Automatic segmentation of brain metastases with less than four input sequences is feasible with minimal or no loss of quality. A T1-CE-only protocol suffices for metastasis segmentation. In contrast, for edema segmentation, the combination of T1-CE and FLAIR seems to be important. Missing either T1-CE or FLAIR decreases performance. These findings may improve future imaging routines by omitting unnecessary sequences, thus speeding up procedures in daily clinical practice while allowing for optimal neural network-based target definitions.
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Affiliation(s)
- J A Buchner
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - F Kofler
- Helmholtz AI, Helmholtz Zentrum Munich, Munich, Germany; Department of Informatics, Technical University of Munich, Munich, Germany
| | - M C Mayinger
- Department of Radiation Oncology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - T B Brunner
- Medical University of Graz, Dept. of Radiation Oncology, Graz, Austria; Department of Radiation Oncology, University Hospital Magdeburg, Magdeburg, Germany
| | - A Wittig
- Department of Radiotherapy and Radiation Oncology, University Hospital Jena, Friedrich-Schiller University, Jena, Germany
| | - B Menze
- Department of Informatics, Technical University of Munich, Munich, Germany
| | - C Zimmer
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - B Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - M Guckenberger
- Department of Radiation Oncology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - N Andratschke
- Department of Radiation Oncology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - R El Shafie
- Heidelberg Institute for Radiation Oncology (HIRO), National Center for Radiation Oncology (NCRO), Heidelberg, Germany; Department of Radiation Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - S Rogers
- Radiation Oncology Center KSA-KSB, Kantonsspital Aarau, Aarau, Switzerland
| | - K Schulze
- Department of Radiation Oncology, General Hospital Fulda, Fulda, Germany
| | - O Blanck
- Department of Radiation Oncology, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - C Zamboglou
- Department of Radiation Oncology, German Oncology Center, European University of Cyprus, Limassol, Cyprus; Department of Radiation Oncology, University of Freiburg - Medical Center, Freiburg, Germany
| | - A Grosu
- Department of Radiation Oncology, University of Freiburg - Medical Center, Freiburg, Germany; German Cancer Consortium (DKTK), Partner Site Freiburg, Freiburg, Germany
| | - S E Combs
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Center Munich, Munich, Germany
| | - D Bernhardt
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
| | - B Wiestler
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; TranslaTUM - Central Institute for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - J C Peeken
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Center Munich, Munich, Germany
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8
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Waltenberger M, Bernhardt D, Diehl C, Meyer B, Straube C, Wiestler B, Wilkens J, Zimmer C, Combs SE. Hypofractionated Stereotactic Radiotherapy vs. Single Fraction Stereotactic Radiosurgery to the Resection Cavity of Brain Metastases after Surgical Resection (SATURNUS trial): A Prospective, Randomized Phase III Trial. Int J Radiat Oncol Biol Phys 2023; 117:e155. [PMID: 37784743 DOI: 10.1016/j.ijrobp.2023.06.979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The brain is a common site for metastases. Resection of large or symptomatic metastases is followed by stereotactic radiotherapy to prevent local recurrence. The optimal fractionation scheme is subject of ongoing research. Supported by emerging retrospective data, we hypothesize that hypofractionated stereotactic radiotherapy (HFSRT) is superior to single-fraction stereotactic radiosurgery (SRS) in terms of local control (LC). We designed the SATURNUS trial to prospectively demonstrate the superiority of HFSRT over SRS after resection of brain metastases in terms of LC. MATERIALS/METHODS The SATURNUS trial is a prospective, randomized phase III trial, currently recruiting patients at a single institution. Patients are 1:1 allocated to HFSRT or SRS using permuted block randomization. Affiliation to the treatment arm is solely blinded to the neuroradiologist assessing therapy response. HFSRT will be delivered with 6 - 7 x 5 Gy and SRS with 1 x 12-20 Gy, prescribed to the surrounding isodose, depending on cavity size and proximity to structures at risk. For SRS, doses do not exceed the maximum doses according to RTOG 90-05. Case number calculation was based on own institutional data on HFSRT (mean LC rate of 88% at 12 months) and data from large phase III trials on SRS (pooled mean LC rate of 66% at 12 months). Using a Chi-squared test of equal proportions (odds ratio = 1), setting test significance level (α) to 0.05, and allocating an equal number of patients to both treatment arms, 114 patients are needed to detect the superiority of HFSRT in terms of LC at 12 months (primary endpoint) with a power of at least 80%. Estimating a dropout rate of 10%, the case number was set to 126. The trial was registered with clinicaltrials.gov (NCT05160818). The first patient was enrolled in May 2021 and recruitment is ongoing. Patients with up to three resected brain metastases are considered for study participation. Further eligibility criteria are histologically confirmed solid tumor disease, resection cavity diameter ≤ 4 cm, consent to perform adjuvant radiotherapy by an interdisciplinary tumor board, completed wound healing, resection within the last six weeks at the time of study inclusion, age ≥ 18 years, KPS ≥ 60%, adequate contraceptive measures for fertile women / men and written informed consent. Patients are followed up clinically and with MRI at 6 weeks and 3, 6, 9 and 12 months after treatment. LC is assessed according to RANO-BM. Toxicity (CTCAE v4.03) is assessed as a secondary endpoint. The rather broad dose corridors allowed within the trial do justice to clinical reality, however, may represent a limitation of the trial. They are therefore addressed with a predefined subgroup analysis, as will be cavity size, among others. Participation of further study centers is desired. To the best of our knowledge, the SATURNUS trial is the only randomized phase III trial adequately powered to detect the superiority of HFSRT over SRS with regard to LC for resected brain metastases. RESULTS To be determined. CONCLUSION To be determined.
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Affiliation(s)
- M Waltenberger
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
| | - D Bernhardt
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
| | - C Diehl
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - B Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | | | - B Wiestler
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - J Wilkens
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - C Zimmer
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - S E Combs
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
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9
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Khajehnejad M, García J, Meyer B. Social Learning versus Individual Learning in the Division of Labour. Biology (Basel) 2023; 12:biology12050740. [PMID: 37237552 DOI: 10.3390/biology12050740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023]
Abstract
Division of labour, or the differentiation of the individuals in a collective across tasks, is a fundamental aspect of social organisations, such as social insect colonies. It allows for efficient resource use and improves the chances of survival for the entire collective. The emergence of large inactive groups of individuals in insect colonies sometimes referred to as laziness, has been a puzzling and hotly debated division-of-labour phenomenon in recent years that is counter to the intuitive notion of effectiveness. It has previously been shown that inactivity can be explained as a by-product of social learning without the need to invoke an adaptive function. While highlighting an interesting and important possibility, this explanation is limited because it is not yet clear whether the relevant aspects of colony life are governed by social learning. In this paper, we explore the two fundamental types of behavioural adaptation that can lead to a division of labour, individual learning and social learning. We find that inactivity can just as well emerge from individual learning alone. We compare the behavioural dynamics in various environmental settings under the social and individual learning assumptions, respectively. We present individual-based simulations backed up by analytic theory, focusing on adaptive dynamics for the social paradigm and cross-learning for the individual paradigm. We find that individual learning can induce the same behavioural patterns previously observed for social learning. This is important for the study of the collective behaviour of social insects because individual learning is a firmly established paradigm of behaviour learning in their colonies. Beyond the study of inactivity, in particular, the insight that both modes of learning can lead to the same patterns of behaviour opens new pathways to approach the study of emergent patterns of collective behaviour from a more generalised perspective.
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Affiliation(s)
- Moein Khajehnejad
- Department of Data Science and Artificial Intelligence, Monash University, Clayton, VIC 3168, Australia
| | - Julian García
- Department of Data Science and Artificial Intelligence, Monash University, Clayton, VIC 3168, Australia
| | - Bernd Meyer
- Department of Data Science and Artificial Intelligence, Monash University, Clayton, VIC 3168, Australia
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10
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DeCarlo C, Woo K, van Petersen AS, Geelkerken RH, Chen AJ, Yeh SL, Kim GY, Henke PK, Tracci MC, Schneck MB, Grotemeyer D, Meyer B, DeMartino RR, Wilkins PB, Iranmanesh S, Rastogi V, Aulivola B, Korepta LM, Shutze WP, Jett KG, Sorber R, Abularrage CJ, Long GW, Bove PG, Davies MG, Miserlis D, Shih M, Yi J, Gupta R, Loa J, Robinson DA, Gombert A, Doukas P, de Caridi G, Benedetto F, Wittgen CM, Smeds MR, Sumpio BE, Harris S, Szeberin Z, Pomozi E, Stilo F, Montelione N, Mouawad NJ, Lawrence P, Dua A. Factors associated with successful median arcuate ligament release in an international, multi-institutional cohort. J Vasc Surg 2023; 77:567-577.e2. [PMID: 36306935 DOI: 10.1016/j.jvs.2022.10.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/12/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Prior research on median arcuate ligament syndrome has been limited to institutional case series, making the optimal approach to median arcuate ligament release (MALR) and resulting outcomes unclear. In the present study, we compared the outcomes of different approaches to MALR and determined the predictors of long-term treatment failure. METHODS The Vascular Low Frequency Disease Consortium is an international, multi-institutional research consortium. Data on open, laparoscopic, and robotic MALR performed from 2000 to 2020 were gathered. The primary outcome was treatment failure, defined as no improvement in median arcuate ligament syndrome symptoms after MALR or symptom recurrence between MALR and the last clinical follow-up. RESULTS For 516 patients treated at 24 institutions, open, laparoscopic, and robotic MALR had been performed in 227 (44.0%), 235 (45.5%), and 54 (10.5%) patients, respectively. Perioperative complications (ileus, cardiac, and wound complications; readmissions; unplanned procedures) occurred in 19.2% (open, 30.0%; laparoscopic, 8.9%; robotic, 18.5%; P < .001). The median follow-up was 1.59 years (interquartile range, 0.38-4.35 years). For the 488 patients with follow-up data available, 287 (58.8%) had had full relief, 119 (24.4%) had had partial relief, and 82 (16.8%) had derived no benefit from MALR. The 1- and 3-year freedom from treatment failure for the overall cohort was 63.8% (95% confidence interval [CI], 59.0%-68.3%) and 51.9% (95% CI, 46.1%-57.3%), respectively. The factors associated with an increased hazard of treatment failure on multivariable analysis included robotic MALR (hazard ratio [HR], 1.73; 95% CI, 1.16-2.59; P = .007), a history of gastroparesis (HR, 1.83; 95% CI, 1.09-3.09; P = .023), abdominal cancer (HR, 10.3; 95% CI, 3.06-34.6; P < .001), dysphagia and/or odynophagia (HR, 2.44; 95% CI, 1.27-4.69; P = .008), no relief from a celiac plexus block (HR, 2.18; 95% CI, 1.00-4.72; P = .049), and an increasing number of preoperative pain locations (HR, 1.12 per location; 95% CI, 1.00-1.25; P = .042). The factors associated with a lower hazard included increasing age (HR, 0.99 per increasing year; 95% CI, 0.98-1.0; P = .012) and an increasing number of preoperative diagnostic gastrointestinal studies (HR, 0.84 per study; 95% CI, 0.74-0.96; P = .012) Open and laparoscopic MALR resulted in similar long-term freedom from treatment failure. No radiographic parameters were associated with differences in treatment failure. CONCLUSIONS No difference was found in long-term failure after open vs laparoscopic MALR; however, open release was associated with higher perioperative morbidity. These results support the use of a preoperative celiac plexus block to aid in patient selection. Operative candidates for MALR should be counseled regarding the factors associated with treatment failure and the relatively high overall rate of treatment failure.
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Affiliation(s)
- Charles DeCarlo
- Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Boston, MA.
| | - Karen Woo
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | | | - Robert H Geelkerken
- Department of Vascular Surgery, Medisch Spectrum Twente, Enschede, Netherlands; Multi-Modality Medical Imaging Group, TechMed Centre, University of Twente, Enschede, Netherlands
| | - Alina J Chen
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Savannah L Yeh
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Gloria Y Kim
- Division of Vascular Surgery, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI
| | - Peter K Henke
- Division of Vascular Surgery, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI
| | - Margaret C Tracci
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of Virginia, Charlottesville, VA
| | - Matthew B Schneck
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of Virginia, Charlottesville, VA
| | - Dirk Grotemeyer
- Department of Vascular Surgery, Hôpitaux Robert Schuman - Hopital Kirchberg, Luxembourg, MN
| | - Bernd Meyer
- Department of Vascular Surgery, Hôpitaux Robert Schuman - Hopital Kirchberg, Luxembourg, MN
| | - Randall R DeMartino
- Division of Vascular and Endovascular Surgery, Department of Surgery, Mayo Clinic, Rochester, MN
| | - Parvathi B Wilkins
- Division of Vascular and Endovascular Surgery, Department of Surgery, Mayo Clinic, Rochester, MN
| | - Sina Iranmanesh
- Division of Vascular and Endovascular Surgery, Department of Surgery, Beth Israel Deaconess Medical Center, Boston, MA
| | - Vinamr Rastogi
- Division of Vascular and Endovascular Surgery, Department of Surgery, Beth Israel Deaconess Medical Center, Boston, MA
| | - Bernadette Aulivola
- Division of Vascular and Endovascular Surgery, Department of Surgery, Loyola University Medical Center, Stritch School of Medicine, Maywood, IL
| | - Lindsey M Korepta
- Division of Vascular and Endovascular Surgery, Department of Surgery, Loyola University Medical Center, Stritch School of Medicine, Maywood, IL
| | - William P Shutze
- Division of Vascular Surgery, Department of Surgery, The Heart Hospital Plano, Plano, TX
| | - Kimble G Jett
- Division of Vascular Surgery, Department of Surgery, The Heart Hospital Plano, Plano, TX
| | - Rebecca Sorber
- Division of Vascular and Endovascular Surgery, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Christopher J Abularrage
- Division of Vascular and Endovascular Surgery, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Graham W Long
- Division of Vascular Surgery, Department of Surgery, Oakland University William Beaumont School of Medicine, Royal Oak, MI
| | - Paul G Bove
- Division of Vascular Surgery, Department of Surgery, Oakland University William Beaumont School of Medicine, Royal Oak, MI
| | - Mark G Davies
- Division of Vascular and Endovascular Surgery, Long School of Medicine, University of Texas Health Sciences Center at San Antonio, San Antonio, TX
| | - Dimitrios Miserlis
- Division of Vascular and Endovascular Surgery, Long School of Medicine, University of Texas Health Sciences Center at San Antonio, San Antonio, TX
| | - Michael Shih
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jeniann Yi
- Division of Vascular Surgery, Department of Surgery, University of Colorado School of Medicine, Aurora, CO
| | - Ryan Gupta
- Division of Vascular Surgery, Department of Surgery, University of Colorado School of Medicine, Aurora, CO
| | - Jacky Loa
- Department of Vascular Surgery, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - David A Robinson
- Department of Vascular Surgery, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Alexander Gombert
- Department of Vascular Surgery, European Vascular Center Aachen Maastricht, RWTH, University Hospital Aachen, Aachen, Germany
| | - Panagiotis Doukas
- Department of Vascular Surgery, European Vascular Center Aachen Maastricht, RWTH, University Hospital Aachen, Aachen, Germany
| | - Giovanni de Caridi
- Division of Vascular and Endovascular Surgery, Department of Biomorf, University of Messina, Messina, Italy
| | - Filippo Benedetto
- Division of Vascular and Endovascular Surgery, Department of Biomorf, University of Messina, Messina, Italy
| | - Catherine M Wittgen
- Division of Vascular Surgery, Department of Surgery, St. Louis University, St. Louis, MO
| | - Matthew R Smeds
- Division of Vascular Surgery, Department of Surgery, St. Louis University, St. Louis, MO
| | - Bauer E Sumpio
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Yale University School of Medicine, New Haven, CT
| | - Sean Harris
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Yale University School of Medicine, New Haven, CT
| | - Zoltan Szeberin
- Department of Vascular and Endovascular Surgery, Semmelweis University, Budapest, Hungary
| | - Enikő Pomozi
- Department of Vascular and Endovascular Surgery, Semmelweis University, Budapest, Hungary
| | - Francesco Stilo
- Division of Vascular Surgery, Department of Medicine and Surgery, Campus Bio-Medico University, Rome, Italy
| | - Nunzio Montelione
- Division of Vascular Surgery, Department of Medicine and Surgery, Campus Bio-Medico University, Rome, Italy
| | - Nicolas J Mouawad
- Division of Vascular and Endovascular Surgery, Department of Surgery, McLaren Health System, Bay City, MI
| | - Peter Lawrence
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Anahita Dua
- Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Boston, MA
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11
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Mandal S, Kar R, Meyer B, Nair NN. Hybrid Functional and Plane Waves based Ab Initio Molecular Dynamics Study of the Aqueous Fe 2+ /Fe 3+ Redox Reaction. Chemphyschem 2023; 24:e202200617. [PMID: 36169153 DOI: 10.1002/cphc.202200617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/27/2022] [Indexed: 02/03/2023]
Abstract
Kohn-Sham density functional theory and plane wave basis set based ab initio molecular dynamics (AIMD) simulation is a powerful tool for studying complex reactions in solutions, such as electron transfer (ET) reactions involving Fe2+ /Fe3+ ions in water. In most cases, such simulations are performed using density functionals at the level of Generalized Gradient Approximation (GGA). The challenge in modelling ET reactions is the poor quality of GGA functionals in predicting properties of such open-shell systems due to the inevitable self-interaction error (SIE). While hybrid functionals can minimize SIE, standard plane-wave based AIMD at that level of theory is typically 150 times slower than GGA for systems containing ∼100 atoms. Among several approaches reported to speed-up AIMD simulations with hybrid functionals, the noise-stabilized MD (NSMD) procedure, together with the use of localized orbitals to compute the required exchange integrals, is an attractive option. In this work, we demonstrate the application of the NSMD approach for studying the Fe2+ /Fe3+ redox reaction in water. It is shown here that long AIMD trajectories at the level of hybrid density functionals can be obtained using this approach. Redox properties of the aqueous Fe2+ /Fe3+ system computed from these simulations are compared with the available experimental data for validation.
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Affiliation(s)
- Sagarmoy Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), 208016, Kanpur, India.,Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nägelsbachstr. 25, 91052, Erlangen, Germany.,Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 1, 91058, Erlangen, Germany
| | - Ritama Kar
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), 208016, Kanpur, India
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nägelsbachstr. 25, 91052, Erlangen, Germany.,Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 1, 91058, Erlangen, Germany
| | - Nisanth N Nair
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), 208016, Kanpur, India
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12
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Abstract
Social insects are among the ecologically most successful collectively living organisms, with efficient division of labour a key feature of this success. Surprisingly, these efficient colonies often have a large proportion of inactive workers in their workforce, sometimes referred to as lazy workers. The dominant hypotheses explaining this are based on specific life-history traits, specific behavioural features or uncertain environments where inactive workers can provide a 'reserve' workforce that can spring into action quickly. While there is a number of experimental studies that show and investigate the presence of inactive workers, mathematical and computational models exploring specific hypotheses are not common. Here, using a simple mathematical model, we show that a parsimonious hypothesis can explain this puzzling social phenomenon. Our model incorporates social interactions and environmental influences into a game-theoretical framework and captures how individuals react to environment by allocating their activity according to environmental conditions. This model shows that inactivity can emerge under specific environmental conditions as a by-product of the task allocation process. Our model confirms the empirical observation that in the case of worker loss, prior homeostatic balance is re-established by replacing some of the lost force with previously inactive workers. Most importantly, our model shows that inactivity in social colonies can be explained without the need to assume an adaptive function for this phenomenon.
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Affiliation(s)
- Moein Khajehnejad
- Department of Data Science and Artificial Intelligence, Faculty of Information Technology, Monash University, Clayton, Victoria, Australia
| | - Julian García
- Department of Data Science and Artificial Intelligence, Faculty of Information Technology, Monash University, Clayton, Victoria, Australia
| | - Bernd Meyer
- Department of Data Science and Artificial Intelligence, Faculty of Information Technology, Monash University, Clayton, Victoria, Australia
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13
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Chen H, Blatnik MA, Ritterhoff CL, Sokolović I, Mirabella F, Franceschi G, Riva M, Schmid M, Čechal J, Meyer B, Diebold U, Wagner M. Water Structures Reveal Local Hydrophobicity on the In 2O 3(111) Surface. ACS Nano 2022; 16:21163-21173. [PMID: 36449748 PMCID: PMC9798908 DOI: 10.1021/acsnano.2c09115] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Clean oxide surfaces are generally hydrophilic. Water molecules anchor at undercoordinated surface metal atoms that act as Lewis acid sites, and they are stabilized by H bonds to undercoordinated surface oxygens. The large unit cell of In2O3(111) provides surface atoms in various configurations, which leads to chemical heterogeneity and a local deviation from this general rule. Experiments (TPD, XPS, nc-AFM) agree quantitatively with DFT calculations and show a series of distinct phases. The first three water molecules dissociate at one specific area of the unit cell and desorb above room temperature. The next three adsorb as molecules in the adjacent region. Three more water molecules rearrange this structure and an additional nine pile up above the OH groups. Despite offering undercoordinated In and O sites, the rest of the unit cell is unfavorable for adsorption and remains water-free. The first water layer thus shows ordering into nanoscopic 3D water clusters separated by hydrophobic pockets.
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Affiliation(s)
- Hao Chen
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
- State
Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, Dalian116023, China
- University
of the Chinese Academy of Sciences, Beijing100049, China
| | - Matthias A. Blatnik
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
- Central
European Institute of Technology (CEITEC), Brno University of Technology, 61200Brno, Czech
Republic
| | - Christian L. Ritterhoff
- Interdisciplinary
Center for Molecular Materials (ICMM) and Computer Chemistry Center
(CCC), Friedrich-Alexander-Universität
Erlangen-Nürnberg (FAU), 91052Erlangen, Germany
| | - Igor Sokolović
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
| | | | | | - Michele Riva
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
| | - Michael Schmid
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
| | - Jan Čechal
- Central
European Institute of Technology (CEITEC), Brno University of Technology, 61200Brno, Czech
Republic
| | - Bernd Meyer
- Interdisciplinary
Center for Molecular Materials (ICMM) and Computer Chemistry Center
(CCC), Friedrich-Alexander-Universität
Erlangen-Nürnberg (FAU), 91052Erlangen, Germany
| | - Ulrike Diebold
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
| | - Margareta Wagner
- Institute
of Applied Physics, TU Wien, 1040Vienna, Austria
- Central
European Institute of Technology (CEITEC), Brno University of Technology, 61200Brno, Czech
Republic
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14
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Holtdirk F, Zindler T, Mehnert A, Bültmann O, Weiss M, Mayer J, Meyer B, Specht A, Bröde P, Claus M, Watzl C, Cheng F. Digital health applications to support patients with breast cancer: Effects of two tailored, dialogue-based programs on quality of life. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01501-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Gempt J, Withake F, Aftahy A, Meyer H, Barz M, Delbridge C, Liesche-Starnecker F, Prokop G, Pfarr N, Schlegel J, Meyer B, Zimmer C, Menze B, Wiestler B. Methylation subgroup and molecular heterogeneity is a hallmark of glioblastoma: implications for biopsy targeting, classification and therapy. ESMO Open 2022; 7:100566. [PMID: 36055049 PMCID: PMC9588899 DOI: 10.1016/j.esmoop.2022.100566] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/01/2022] [Accepted: 07/17/2022] [Indexed: 11/03/2022] Open
Abstract
Background Patients and methods Results Conclusions Glioblastoma exhibits significant heterogeneity, from epigenome-wide methylation phenotypes to single molecular targets. Phylogeny showed CDKN2A/B loss and gain of EGFR, PDGFRA, and CDK4 early in tumor development. Intratumoral heterogeneity is of utmost importance for molecular classification as well as for defining therapeutic targets. Assessing single biopsies underestimates the true molecular diversity in a tumor.
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Gadelmawla A, Spreafico S, Heinemann F, Liu D, Li Q, Yan Q, Hayashi K, Meyer B, Webber K. In situ temperature-dependent X-ray diffraction study of ferroelectric single crystal BCZT. Acta Cryst Sect A 2022. [DOI: 10.1107/s205327332209283x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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17
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Petros N, Hadlaczky G, Carletto S, Martínez S, Meyer B, Ostacoli L, Ottaviano M, Scilingo E, Carli V. Sociodemographic characteristics associated with an eHealth system designed to reduce depressive symptoms among patients with breast or prostate cancer: a prospective study. Eur Psychiatry 2022. [PMCID: PMC9566384 DOI: 10.1192/j.eurpsy.2022.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Electronic health (eHealth) interventions integrate different elements of care in treating and preventing mental ill-health in patients with somatic illnesses. Identifying different sociodemographic characteristics that might be associated with higher perceived usability can help in improving the usability of these e-health interventions. Objectives This study aimed to identify sociodemographic characteristics that might be associated with the perceived usability of the NEVERMIND e-health system, comprised of a mobile application and a sensorized shirt, developed to reduce co-morbid depressive symptoms in patients with breast or prostate cancer. Methods The study included 129 patients with a diagnosis of breast or prostate cancer who received the NEVERMIND system. Sociodemographic data were collected at baseline. Usability outcomes included the System Usability Scale (SUS), the Mobile Application Rating Scale: user version (uMARS), and a usage index. Results The analysis was based on 108 patients (68 breast cancer and 40 prostate cancer patients) who used the NEVERMIND system. The overall mean SUS score at 12-weeks was 73.4 with no statistical differences among different sociodemographic characteristics. The global uMARS score was 3.8, and females scored the app higher than males (β coefficient= 0.16; p=.03, 95% CI 0.02 - 0.3). Females had significant lower usage (β coefficient= -0.13; p=.04, 95% CI -0.25 to -0.01) after adjusting for other covariates. Conclusions There was a higher favourability of the mobile application among females compared to males. However, males had significantly higher usage of the NEVERMIND system. The NEVERMIND system does not suffer from ‘digital divide’ where certain sociodemographic characteristics are more associated with higher usability. Disclosure No significant relationships.
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18
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Diehl C, Rosenkranz E, Mißlbeck M, Schwendner M, Sollmann N, Ille S, Meyer B, Combs S, Bernhardt D, Krieg S. nTMS-derived DTI-based motor fiber tracking in radiotherapy treatment planning of high-grade gliomas for avoidance of motor structures. Radiother Oncol 2022; 171:189-197. [DOI: 10.1016/j.radonc.2022.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 10/18/2022]
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19
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Keller F, Mamani Soliz P, Seidl LG, Lee RP, Meyer B. Life cycle inventory data generation by process simulation for conventional, feedstock recycling and power-to-X technologies for base chemical production. Data Brief 2022; 41:107848. [PMID: 35146084 PMCID: PMC8818931 DOI: 10.1016/j.dib.2022.107848] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 11/19/2022] Open
Abstract
The article presents the methodology and applicable data for the generation of life cycle inventory for conventional and alternative processes for base chemical production by process simulation. Addressed base chemicals include lower olefins, BTX aromatics, methanol, ammonia and hydrogen. Assessed processes include conventional chemical production processes from naphtha, LPG, natural gas and heavy fuel oil; feedstock recycling technologies via gasification and pyrolysis of refuse derived fuel; and power-to-X technologies from hydrogen and CO2. Further, process variations with additional hydrogen input are covered. Flowsheet simulation in Aspen Plus is applied to generate datasets with conclusive mass and energy balance under uniform modelling and assessment conditions with available validation data. Process inventory data is generated with no regard to the development stage of the respective technology, but applicable process data with high technology maturity is prioritized for model validation. The generated inventory data can be applied for life cycle assessments. Further, the presented modelling and balancing framework can be applied for inventory data generation of similar processes to ensure comparability in life cycle inventory data.
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Affiliation(s)
- Florian Keller
- TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering (IEC), Fuchsmühlenweg 9, 09599 Freiberg, Germany
- Corresponding author.
| | - Patricio Mamani Soliz
- TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering (IEC), Fuchsmühlenweg 9, 09599 Freiberg, Germany
| | - Ludwig Georg Seidl
- TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering (IEC), Fuchsmühlenweg 9, 09599 Freiberg, Germany
| | - Roh Pin Lee
- TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering (IEC), Fuchsmühlenweg 9, 09599 Freiberg, Germany
- Fraunhofer IMWS Branch Lab – Circular Carbon Technologies, Fuchsmuehlenweg 9, 09599 Freiberg, Germany
| | - Bernd Meyer
- TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering (IEC), Fuchsmühlenweg 9, 09599 Freiberg, Germany
- Center for Efficient High Temperature Processes & Materials Conversion, TU Bergakademie Freiberg, Winklerstrasse 5, 09599 Freiberg, Germany
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20
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Mandal S, Kar R, Klöffel T, Meyer B, Nair NN. Improving the scaling and performance of multiple time stepping-based molecular dynamics with hybrid density functionals. J Comput Chem 2022; 43:588-597. [PMID: 35147988 DOI: 10.1002/jcc.26816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/07/2022] [Accepted: 01/18/2022] [Indexed: 12/18/2022]
Abstract
Density functionals at the level of the generalized gradient approximation (GGA) and a plane-wave basis set are widely used today to perform ab initio molecular dynamics (AIMD) simulations. Going up in the ladder of accuracy of density functionals from GGA (second rung) to hybrid density functionals (fourth rung) is much desired pertaining to the accuracy of the latter in describing structure, dynamics, and energetics of molecular and condensed matter systems. On the other hand, hybrid density functional based AIMD simulations are about two orders of magnitude slower than GGA based AIMD for systems containing ~100 atoms using ~100 compute cores. Two methods, namely MTACE and s-MTACE, based on a multiple time step integrator and adaptively compressed exchange operator formalism are able to provide a speed-up of about 7-9 in performing hybrid density functional based AIMD. In this work, we report an implementation of these methods using a task-group based parallelization within the CPMD program package, with the intention to take advantage of the large number of compute cores available on modern high-performance computing platforms. We present here the boost in performance achieved through this algorithm. This work also identifies the computational bottleneck in the s-MTACE method and proposes a way to overcome it.
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Affiliation(s)
- Sagarmoy Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur, India.,Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ritama Kar
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur, India
| | - Tobias Klöffel
- Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials and Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Nisanth N Nair
- Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur, India
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21
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Blackwelder J, Oder A, Finke J, Indihar V, Vonbokern L, Meyers M, Meyer B, Riddle J. 308: Depression and anxiety score changes after elexacaftor/tezacaftor/ivacaftor: University of Cincinnati adult CF center experience. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01733-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Oder A, Indihar V, Meyers M, Vonbokern L, Meyer B, Riddle J, Finke J, Shively L, Hostetter A. 130: Feedback from patients regarding their use of home spirometers. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01555-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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23
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Sauerzopf U, Weidenauer A, Dajic I, Bauer M, Bartova L, Meyer B, Nics L, Philippe C, Pfaff S, Pichler V, Mitterhauser M, Wadsak W, Hacker M, Kasper S, Lanzenberger R, Pezawas L, Praschak-Rieder N, Willeit M. Disrupted relationship between blood glucose and brain dopamine D2/3 receptor binding in patients with first-episode schizophrenia. Neuroimage Clin 2021; 32:102813. [PMID: 34544031 PMCID: PMC8455866 DOI: 10.1016/j.nicl.2021.102813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 01/11/2023]
Abstract
An elemental function of brain dopamine is to coordinate cognitive and motor resources for successful exploitation of environmental energy sources. Dopamine transmission, goal-directed behavior, and glucose homeostasis are altered in schizophrenia patients prior to and after initiation of pharmacological treatment. Thus, we investigated the relationship between blood glucose levels and brain dopamine signaling in drug-naïve patients with first-episode psychosis. We quantified blood glucose levels and binding of the dopamine D2/3 receptor agonist radioligand (+)-[11C]-PHNO in 15 medication-naïve patients and 27 healthy volunteers employing positron emission tomography. Whole-brain voxel-wise linear model analysis identified two clusters of significant interaction between blood glucose levels and diagnosis on (+)-[11C]-PHNO binding-potential values. We observed positive relationships between blood glucose levels and binding-potential values in healthy volunteers but negative ones in patients with first episode psychosis in a cluster surviving rigorous multiple testing correction located in the in the right ventral tegmental area. Another cluster of homologous behavior, however at a lower level of statistical significance, comprised the ventral striatum and pallidum. Extracellular dopamine levels are a major determinant of (+)-[11C]-PHNO binding in the brain. In line with the concept that increased dopamine signaling occurs when goal-directed behavior is needed for restoring energy supply, our data indicate that in healthy volunteers, extracellular dopamine levels are high when blood glucose levels are low and vice-versa. This relationship is reversed in patients with first-episode psychosis, possibly reflecting an underlying pathogenic alteration that links two seemingly unrelated aspects of the illness: altered dopamine signaling and dysfunctional glucose homeostasis.
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Affiliation(s)
- U Sauerzopf
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - A Weidenauer
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - I Dajic
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - M Bauer
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria; Department of Clinical Pharmacology, Medical University of Vienna, Austria
| | - L Bartova
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - B Meyer
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - L Nics
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria
| | - C Philippe
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria
| | - S Pfaff
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria
| | - V Pichler
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria
| | - M Mitterhauser
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria; Ludwig-Boltzmann-Institute Applied Diagnostics, Vienna, Austria
| | - W Wadsak
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria; Center for Biomarker Research in Medicine CBmed, Graz, Austria
| | - M Hacker
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Austria
| | - S Kasper
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria; Centre for Brain Research, Medical University of Vienna, Austria
| | - R Lanzenberger
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - L Pezawas
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - N Praschak-Rieder
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria
| | - M Willeit
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Austria.
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24
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Hirsch A, Lorenz P, Wullschläger F, Rüter A, Meyer B. Tunable Photoswitching in Norbornadiene (NBD)/Quadricyclane (QC) - Fullerene Hybrids. Chemistry 2021; 27:14501-14507. [PMID: 34328641 PMCID: PMC8596871 DOI: 10.1002/chem.202102109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 11/22/2022]
Abstract
With respect to molecular switches, initializing the quadricyclane (QC) to norbornadiene (NBD) back‐reaction by light is highly desirable. Our previous publication provided a unique solution for this purpose by utilizing covalently bound C60. In this work, the fundamental processes within these hybrids has been investigated. Variation of the linker unit connecting the NBD/QC moiety with the fullerene core is used as a tool to tune the properties of the resulting hybrids. Utilizing the Prato reaction, two unprecedented NBD/QC – fullerene hybrids having a long‐rigid and a short‐rigid linker were synthesized. Molecular dynamics simulations revealed that this results in an average QC–C60 distance of up to 14.2 Å. By comparing the NBD–QC switching of these derivatives with the already established one having a flexible linker, valuable mechanistic insights were gained. Most importantly, spatial convergence of the QC moiety and the fullerene core is inevitable for an efficient back‐reaction.
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Affiliation(s)
- Andreas Hirsch
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, GERMANY
| | - Patrick Lorenz
- Friedrich-Alexander-Universität Erlangen-Nürnberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Chemistry, GERMANY
| | - Florian Wullschläger
- Friedrich-Alexander-Universität Erlangen-Nürnberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Chemistry, GERMANY
| | - Antonia Rüter
- Friedrich Alexander University Erlangen Nuremberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Chemistry, GERMANY
| | - Bernd Meyer
- Friedrich Alexander University Erlangen Nuremberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Chemistry, GERMANY
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25
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Kessel KA, Deichl A, Gempt J, Meyer B, Posch C, Diehl C, Zimmer C, Combs SE. Outcomes after stereotactic radiosurgery of brain metastases in patients with malignant melanoma and validation of the melanoma molGPA. Clin Transl Oncol 2021; 23:2020-2029. [PMID: 33993415 PMCID: PMC8390419 DOI: 10.1007/s12094-021-02607-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Malignant melanoma is the third most common primary in the diagnosis of brain metastases. Stereotactic radiosurgery (SRS) is a well-established treatment option in limited brain disease. We analyzed outcomes of SRS with a particular focus on the graded prognostic assessment (GPA, melanoma molGPA), prognostic factors, and toxicity. METHODS We evaluated 173 brain metastases in 83 patients with malignant melanoma. All were treated with SRS median dose of 20 Gy prescribed to the 80 or 100% isodose line between 2002 and 2019. All patients were followed-up regularly, including contrast-enhanced brain imaging as well as clinical examination, initially 6 weeks after treatment, then in quarterly follow-up. RESULTS The median age was 61 years (range 27-80); 36 female and 47 male patients were treated. After a median follow-up of 5.7 months, median OS (overall survival) was 9.7 months 95%-KI 4.7-14.7). LC (local control) at 6 months, 12, 24 months was 89%, 86%, and 72%, respectively (median was not reached). Median DBC (distant brain control) was 8.2 months (95%-KI 4.7-11.7). For OS, a KPS ≥ 80%, a positive BRAF mutation status, a small PTV (planning target volume), the absence of extracranial metastases, as well as a GPA and melanoma molGPA > 2 were prognostic factors. In the MVA, a small PTV and a melanoma molGPA > 2 remained significant. CONCLUSION The present survival outcomes support the use of the disease-specific melanoma molGPA as reliable prognostic score. Favorable outcomes for SRS compared to other studies were observed. In the treatment of brain metastases of malignant melanoma patients, a multidisciplinary approach consisting of surgery, SRS, chemotherapy, and immunotherapy should be considered.
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Affiliation(s)
- K A Kessel
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich (TUM), Ismaninger Straße 22, 81675, Munich, Germany.,Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, Neuherberg, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany
| | - A Deichl
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich (TUM), Ismaninger Straße 22, 81675, Munich, Germany.
| | - J Gempt
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany.,Department of Neurosurgery, Technical University of Munich (TUM), Munich, Germany
| | - B Meyer
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany.,Department of Neurosurgery, Technical University of Munich (TUM), Munich, Germany
| | - C Posch
- Department of Dermatology and Allergy, Technical University of Munich (TUM), Munich, Germany.,Faculty of Medicine, Sigmund Freud University, Vienna, Austria
| | - C Diehl
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich (TUM), Ismaninger Straße 22, 81675, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany
| | - C Zimmer
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany.,Department of Neuroradiology, Technical University of Munich (TUM), Munich, Germany
| | - S E Combs
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich (TUM), Ismaninger Straße 22, 81675, Munich, Germany.,Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, Neuherberg, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), DKTK Partner Site Munich, Munich, Germany
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26
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Wagner M, Meyer B, Setvin M, Schmid M, Diebold U. Direct assessment of the acidity of individual surface hydroxyls. Nature 2021; 592:722-725. [PMID: 33911267 DOI: 10.1038/s41586-021-03432-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/08/2021] [Indexed: 11/10/2022]
Abstract
The state of deprotonation/protonation of surfaces has far-ranging implications in chemistry, from acid-base catalysis1 and the electrocatalytic and photocatalytic splitting of water2, to the behaviour of minerals3 and biochemistry4. An entity's acidity is described by its proton affinity and its acid dissociation constant pKa (the negative logarithm of the equilibrium constant of the proton transfer reaction in solution). The acidity of individual sites is difficult to assess for solids, compared with molecules. For mineral surfaces, the acidity is estimated by semi-empirical concepts, such as bond-order valence sums5, and increasingly modelled with first-principles molecular dynamics simulations6,7. At present, such predictions cannot be tested-experimental measures, such as the point of zero charge8, integrate over the whole surface or, in some cases, individual crystal facets9. Here we assess the acidity of individual hydroxyl groups on In2O3(111)-a model oxide with four different types of surface oxygen atom. We probe the strength of their hydrogen bonds with the tip of a non-contact atomic force microscope and find quantitative agreement with density functional theory calculations. By relating the results to known proton affinities of gas-phase molecules, we determine the proton affinity of the different surface sites of In2O3 with atomic precision. Measurements on hydroxylated titanium dioxide and zirconium oxide extend our method to other oxides.
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Affiliation(s)
- Margareta Wagner
- Institute of Applied Physics, TU Wien, Vienna, Austria.,Central European Institute of Technology (CEITEC), Brno University of Technology, Brno, Czech Republic
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Computer Chemistry Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Martin Setvin
- Institute of Applied Physics, TU Wien, Vienna, Austria.,Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
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Klöffel T, Kozlowska M, Popiel S, Meyer B, Rodziewicz P. Adsorption of sulfur mustard on clean and water-saturated ZnO(101¯0): Structural diversity from first-principles calculations. J Hazard Mater 2021; 402:123503. [PMID: 32738782 DOI: 10.1016/j.jhazmat.2020.123503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 07/09/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
We investigate the adsorption of a chemical warfare agent, namely sulfur mustard (SM), on clean and water-saturated ZnO(101¯0) surfaces using density functional theory calculations to understand the first step of its efficient neutralization to less toxic chemical compounds. We determine the relative stability of various SM conformers adsorbed at different sites on both ZnO surfaces. The unique hydrogen bonding patterns obtained for the idealized clean and the more realistic water-saturated ZnO surface are analyzed and their influence on the stability of the SM@ZnO structures is demonstrated. We find that absolute values of the calculated binding and interaction energies are significantly higher for the clean than for the water-saturated ZnO surface due to the formation of Cl⋯Zn and S⋯Zn contacts. The high adsorptive reactivity of the clean ZnO surface is also evident from the strong structural changes of the initial local energy minimum gas-phase conformations of the SM molecules upon adsorption. This phenomenon is not observed for the water-saturated ZnO surface, which has almost no impact on the SM conformation after adsorption, leaving it as it exists in the gas phase. The insights from the results obtained provide a missing piece toward the understanding of the complex mechanism of SM neutralization on ZnO surfaces.
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Affiliation(s)
- Tobias Klöffel
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg,Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Mariana Kozlowska
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Stanislaw Popiel
- Institute of Chemistry, Military University of Technology, Kaliskiego 2, 15-399 Warszawa, Poland
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg,Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Pawel Rodziewicz
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg,Nägelsbachstr. 25, 91052 Erlangen, Germany; Institute of Chemistry, Jan Kochanowski University, Swietokrzyska 15G, 25-406 Kielce, Poland.
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Seidl LG, Poganietz W, Keller F, Lee RP, Grunwald A, Meyer B. Konzepte und Nachhaltigkeitsbewertung der Kohlenstoffkreislaufwirtschaft am Beispiel des chemischen Recyclings zur Olefinproduktion. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202000102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ludwig Georg Seidl
- TU Bergakademie Freiberg Institut für Energieverfahrenstechnik und Chemieingenieurwesen (IEC) Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Witold‐Roger Poganietz
- Karlsruher Institut für Technologie Institut für Technikfolgenabschätzung und Systemanalyse (KIT-ITAS) Karlstraße 11 76133 Karlsruhe Deutschland
| | - Florian Keller
- TU Bergakademie Freiberg Institut für Energieverfahrenstechnik und Chemieingenieurwesen (IEC) Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Roh Pin Lee
- TU Bergakademie Freiberg Institut für Energieverfahrenstechnik und Chemieingenieurwesen (IEC) Fuchsmühlenweg 9 09599 Freiberg Deutschland
- Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS Außenstelle Kohlenstoff-Kreislauf-Technologien (KKT) Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Armin Grunwald
- Karlsruher Institut für Technologie Institut für Technikfolgenabschätzung und Systemanalyse (KIT-ITAS) Karlstraße 11 76133 Karlsruhe Deutschland
| | - Bernd Meyer
- TU Bergakademie Freiberg Institut für Energieverfahrenstechnik und Chemieingenieurwesen (IEC) Fuchsmühlenweg 9 09599 Freiberg Deutschland
- Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS Außenstelle Kohlenstoff-Kreislauf-Technologien (KKT) Fuchsmühlenweg 9 09599 Freiberg Deutschland
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Straube C, Kessel K, Antoni S, Gempt J, Meyer B, Schlegel J, Schmidt-Graf F, Combs S. PH-0358: score to predict survival of elderly patients newly diagnosed for Glioblastoma. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00382-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kessel K, Weber W, Zimmer C, Meyer B, Combs S. PO-0874: Development of a prognostic model for patients with high-grade meningioma - the ELSA study. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00891-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Adhikari R, Siglreithmaier G, Gurrath M, Meusel M, Kuliga J, Lepper M, Hölzel H, Jux N, Meyer B, Steinrück H, Marbach H. Cover Feature: Formation of Highly Ordered Molecular Porous 2D Networks from Cyano‐Functionalized Porphyrins on Cu(111) (Chem. Eur. J. 59/2020). Chemistry 2020. [DOI: 10.1002/chem.202003357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rajan Adhikari
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Gretel Siglreithmaier
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Martin Gurrath
- Interdisciplinary Center for Molecular Materials (ICMM) an Computer-Chemistry-Center (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstr. 25 91052 Erlangen Germany
| | - Manuel Meusel
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Jan Kuliga
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Michael Lepper
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Helen Hölzel
- Lehrstuhl für Organische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 10 91058 Erlangen Germany
| | - Norbert Jux
- Lehrstuhl für Organische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 10 91058 Erlangen Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) an Computer-Chemistry-Center (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstr. 25 91052 Erlangen Germany
| | - Hans‐Peter Steinrück
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
| | - Hubertus Marbach
- Lehrstuhl für Physikalische Chemie II Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
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Adhikari R, Siglreithmaier G, Gurrath M, Meusel M, Kuliga J, Lepper M, Hölzel H, Jux N, Meyer B, Steinrück H, Marbach H. Formation of Highly Ordered Molecular Porous 2D Networks from Cyano-Functionalized Porphyrins on Cu(111). Chemistry 2020; 26:13408-13418. [PMID: 32573877 PMCID: PMC7692896 DOI: 10.1002/chem.202001980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/04/2022]
Abstract
We investigated the adsorption of three related cyano-functionalized tetraphenyl porphyrin derivatives on Cu(111) by scanning tunneling microscopy (STM) in ultra-high vacuum (UHV) with the goal to identify the role of the cyano group and the central Cu atom for the intermolecular and supramolecular arrangement. The porphyrin derivatives studied were Cu-TCNPP, Cu-cisDCNPP, and 2H-cisDCNPP, that is, Cu-5,10,15,20-tetrakis-(p-cyano)-phenylporphyrin, Cu-meso-cis-di(p-cyano)-phenylporphyrin and 2H-meso-cis-di(p-cyano)-phenylporphyrin, respectively. Starting from different structures obtained after deposition at room temperature, all three molecules form the same long-range ordered hexagonal honeycomb-type structure with triangular pores and three molecules per unit cell. For the metal-free 2H-cisDCNPP, this occurs only after self-metalation upon heating. The structure-forming elements are pores with a distance of 3.1 nm, formed by triangles of porphyrins fused together by cyano-Cu-cyano interactions with Cu adatoms. This finding leads us to suggest that two cyano-phenyl groups in the "cis" position is the minimum prerequisite to form a highly ordered 2D porous molecular pattern. The experimental findings are supported by detailed density functional theory calculations to analyze the driving forces that lead to the formation of the porous hexagonal honeycomb-type structure.
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Affiliation(s)
- Rajan Adhikari
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Gretel Siglreithmaier
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Martin Gurrath
- Interdisciplinary Center for Molecular Materials (ICMM) anComputer-Chemistry-Center (CCC)Friedrich-Alexander-Universität Erlangen-NürnbergNägelsbachstr. 2591052ErlangenGermany
| | - Manuel Meusel
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Jan Kuliga
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Michael Lepper
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Helen Hölzel
- Lehrstuhl für Organische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Norbert Jux
- Lehrstuhl für Organische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) anComputer-Chemistry-Center (CCC)Friedrich-Alexander-Universität Erlangen-NürnbergNägelsbachstr. 2591052ErlangenGermany
| | - Hans‐Peter Steinrück
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Hubertus Marbach
- Lehrstuhl für Physikalische Chemie IIFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
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Balakrishna B, Menon A, Cao K, Gsänger S, Beil SB, Villalva J, Shyshov O, Martin O, Hirsch A, Meyer B, Kaiser U, Guldi DM, von Delius M. Dynamic Covalent Formation of Concave Disulfide Macrocycles Mechanically Interlocked with Single-Walled Carbon Nanotubes. Angew Chem Int Ed Engl 2020; 59:18774-18785. [PMID: 32544289 PMCID: PMC7590186 DOI: 10.1002/anie.202005081] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Indexed: 02/02/2023]
Abstract
The formation of discrete macrocycles wrapped around single-walled carbon nanotubes (SWCNTs) has recently emerged as an appealing strategy to functionalize these carbon nanomaterials and modify their properties. Here, we demonstrate that the reversible disulfide exchange reaction, which proceeds under mild conditions, can install relatively large amounts of mechanically interlocked disulfide macrocycles on the one-dimensional nanotubes. Size-selective functionalization of a mixture of SWCNTs of different diameters were observed, presumably arising from error correction and the presence of relatively rigid, curved π-systems in the key building blocks. A combination of UV/Vis/NIR, Raman, photoluminescence excitation, and transient absorption spectroscopy indicated that the small (6,4)-SWCNTs were predominantly functionalized by the small macrocycles 12 , whereas the larger (6,5)-SWCNTs were an ideal match for the larger macrocycles 22 . This size selectivity, which was rationalized computationally, could prove useful for the purification of nanotube mixtures, since the disulfide macrocycles can be removed quantitatively under mild reductive conditions.
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Affiliation(s)
- Bugga Balakrishna
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Arjun Menon
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Kecheng Cao
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sebastian Gsänger
- Interdisciplinary Center for Molecular Materials (ICMM) & Computer-Chemistry-Center (CCC), Friedrich-Alexander University Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany
| | - Sebastian B Beil
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Julia Villalva
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Oleksandr Shyshov
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Oliver Martin
- Department of Chemistry and Pharmacy & Joint Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy & Joint Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) & Computer-Chemistry-Center (CCC), Friedrich-Alexander University Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany
| | - Ute Kaiser
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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Meyer B, Torriani G, Yerly S, Mazza L, Calame A, Arm-Vernez I, Zimmer G, Agoritsas T, Stirnemann J, Spechbach H, Guessous I, Stringhini S, Pugin J, Roux-Lombard P, Fontao L, Siegrist CA, Eckerle I, Vuilleumier N, Kaiser L. Validation of a commercially available SARS-CoV-2 serological immunoassay. Clin Microbiol Infect 2020; 26:1386-1394. [PMID: 32603801 PMCID: PMC7320699 DOI: 10.1016/j.cmi.2020.06.024] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/19/2020] [Accepted: 06/20/2020] [Indexed: 01/20/2023]
Abstract
OBJECTIVES To validate the diagnostic accuracy of a Euroimmun SARS-CoV-2 IgG and IgA immunoassay for COVID-19. METHODS In this unmatched (1:2) case-control validation study, we used sera of 181 laboratory-confirmed SARS-CoV-2 cases and 326 controls collected before SARS-CoV-2 emergence. Diagnostic accuracy of the immunoassay was assessed against a whole spike protein-based recombinant immunofluorescence assay (rIFA) by receiver operating characteristic (ROC) analyses. Discrepant cases between ELISA and rIFA were further tested by pseudo-neutralization assay. RESULTS COVID-19 patients were more likely to be male and older than controls, and 50.3% were hospitalized. ROC curve analyses indicated that IgG and IgA had high diagnostic accuracies with AUCs of 0.990 (95% Confidence Interval [95%CI]: 0.983-0.996) and 0.978 (95%CI: 0.967-0.989), respectively. IgG assays outperformed IgA assays (p=0.01). Taking an assessed 15% inter-assay imprecision into account, an optimized IgG ratio cut-off > 2.5 displayed a 100% specificity (95%CI: 99-100) and a 100% positive predictive value (95%CI: 96-100). A 0.8 cut-off displayed a 94% sensitivity (95%CI: 88-97) and a 97% negative predictive value (95%CI: 95-99). Substituting the upper threshold for the manufacturer's, improved assay performance, leaving 8.9% of IgG ratios indeterminate between 0.8-2.5. CONCLUSIONS The Euroimmun assay displays a nearly optimal diagnostic accuracy using IgG against SARS-CoV-2 in patient samples, with no obvious gains from IgA serology. The optimized cut-offs are fit for rule-in and rule-out purposes, allowing determination of whether individuals in our study population have been exposed to SARS-CoV-2 or not. IgG serology should however not be considered as a surrogate of protection at this stage.
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Affiliation(s)
- B Meyer
- Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - G Torriani
- Department of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland
| | - S Yerly
- Laboratory of Virology, Geneva University Hospitals, Geneva, Switzerland
| | - L Mazza
- Laboratory of Virology, Geneva University Hospitals, Geneva, Switzerland
| | - A Calame
- Division of Infectious Disease, Geneva University Hospitals, Geneva, Switzerland
| | - I Arm-Vernez
- Laboratory of Virology, Geneva University Hospitals, Geneva, Switzerland
| | - G Zimmer
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology (DIP), Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - T Agoritsas
- Division of General Internal Medicine, Department of Medicine, Geneva University Hospitals, Geneva, Switzerland; Department of Health Research Methods, Evidence, and Impact, Hamilton, Ontario, Canada
| | - J Stirnemann
- Division of General Internal Medicine, Department of Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - H Spechbach
- Division and Department of Primary Care Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - I Guessous
- Division and Department of Primary Care Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - S Stringhini
- Division and Department of Primary Care Medicine, Geneva University Hospitals, Geneva, Switzerland; Unit of Population Epidemiology, Division of Primary Care, Geneva University Hospitals, Geneva, Switzerland
| | - J Pugin
- Division of Intensive Care, Geneva University Hospitals, Geneva, Switzerland
| | - P Roux-Lombard
- Division of Laboratory Medicine, Department of Diagnostics, Geneva University Hospitals and Geneva University, Geneva, Switzerland
| | - L Fontao
- Division of Dermatology and of Laboratory Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - C-A Siegrist
- Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - I Eckerle
- Department of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland; Division of Infectious Disease, Geneva University Hospitals, Geneva, Switzerland; Geneva Centre for Emerging Viral Diseases, Geneva University Hospitals, Geneva, Switzerland
| | - N Vuilleumier
- Division of Laboratory Medicine, Department of Diagnostics, Geneva University Hospitals and Geneva University, Geneva, Switzerland; Division of Laboratory Medicine, Department of Medicine, Faculty of Medicine, Geneva, Switzerland
| | - L Kaiser
- Laboratory of Virology, Geneva University Hospitals, Geneva, Switzerland; Division of Infectious Disease, Geneva University Hospitals, Geneva, Switzerland; Geneva Centre for Emerging Viral Diseases, Geneva University Hospitals, Geneva, Switzerland.
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Krauss P, Butenschoen VM, Meyer B, Negwer C. Sub-decapitation in suicidal chainsaw injury: report of a rare case and operative management. Acta Neurochir (Wien) 2020; 162:2537-2540. [PMID: 32474639 DOI: 10.1007/s00701-020-04413-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 05/15/2020] [Indexed: 11/24/2022]
Abstract
Chainsaw accidents are severe injuries, mostly work-related and concerning upper or lower extremities. Few suicidal chainsaw injuries are reported, all of them fatal. We report the case of a 23-year-old man who attempted suicide by sub-decapitation with a chainsaw, its successful (peri-) operative management, and clinical course along with a discussion of the contemporary management and body of evidence of such lesions. Chainsaw injuries are severe traumas. Stepwise surgery with maximal functional reconstruction is safe and optimal clinical outcome can be achieved.
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Affiliation(s)
- P Krauss
- Department of Neurosurgery, Klinikum rechts der Isar, Ismaninger Strasse 22, 81675, Munich, Germany.
| | - V M Butenschoen
- Department of Neurosurgery, Klinikum rechts der Isar, Ismaninger Strasse 22, 81675, Munich, Germany
| | - B Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, Ismaninger Strasse 22, 81675, Munich, Germany
| | - C Negwer
- Department of Neurosurgery, Klinikum rechts der Isar, Ismaninger Strasse 22, 81675, Munich, Germany
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Mathiesen T, Arraez M, Asser T, Balak N, Barazi S, Bernucci C, Bolger C, Broekman MLD, Demetriades AK, Feldman Z, Fontanella MM, Foroglou N, Lafuente J, Maier AD, Meyer B, Niemelä M, Roche PH, Sala F, Samprón N, Sandvik U, Schaller K, Thome C, Thys M, Tisell M, Vajkoczy P, Visocchi M. A snapshot of European neurosurgery December 2019 vs. March 2020: just before and during the Covid-19 pandemic. Acta Neurochir (Wien) 2020; 162:2221-2233. [PMID: 32642834 PMCID: PMC7343382 DOI: 10.1007/s00701-020-04482-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022]
Abstract
Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or Covid-19), which began as an epidemic in China and spread globally as a pandemic, has necessitated resource management to meet emergency needs of Covid-19 patients and other emergent cases. We have conducted a survey to analyze caseload and measures to adapt indications for a perception of crisis. Methods We constructed a questionnaire to survey a snapshot of neurosurgical activity, resources, and indications during 1 week with usual activity in December 2019 and 1 week during SARS-CoV-2 pandemic in March 2020. The questionnaire was sent to 34 neurosurgical departments in Europe; 25 departments returned responses within 5 days. Results We found unexpectedly large differences in resources and indications already before the pandemic. Differences were also large in how much practice and resources changed during the pandemic. Neurosurgical beds and neuro-intensive care beds were significantly decreased from December 2019 to March 2020. The utilization of resources decreased via less demand for care of brain injuries and subarachnoid hemorrhage, postponing surgery and changed surgical indications as a method of rationing resources. Twenty departments (80%) reduced activity extensively, and the same proportion stated that they were no longer able to provide care according to legitimate medical needs. Conclusion Neurosurgical centers responded swiftly and effectively to a sudden decrease of neurosurgical capacity due to relocation of resources to pandemic care. The pandemic led to rationing of neurosurgical care in 80% of responding centers. We saw a relation between resources before the pandemic and ability to uphold neurosurgical services. The observation of extensive differences of available beds provided an opportunity to show how resources that had been restricted already under normal conditions translated to rationing of care that may not be acceptable to the public of seemingly affluent European countries. Electronic supplementary material The online version of this article (10.1007/s00701-020-04482-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- T Mathiesen
- Department of Neurosurgery, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
| | - M Arraez
- Department of Neurosurgery, Carlos Haya University Hospital,, University of Malaga, Malaga, Spain
| | - T Asser
- University of Tartu, Tartu, Estonia
| | - N Balak
- Department of Neurosurgery, Istanbul Medeniyet University, Göztepe Education and Research Hospital, Istanbul, Turkey
| | - S Barazi
- King's College Hospital, London, UK
| | - C Bernucci
- Department of Neuroscience and Surgery of the Nervous System, ASST Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - C Bolger
- National Centre for Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - M L D Broekman
- Departments of Neurosurgery, Haaglanden Medical Center and Leiden University Medical Center, Leiden University, Leiden, Zuid-Holland, the Netherlands
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - A K Demetriades
- Department of Neurosurgery, Western General Hospital, Edinburgh, UK
| | - Z Feldman
- Department of Neurosurgery, Sheba Medical Center, Ramat Gan, Israel
| | - M M Fontanella
- Neurosurgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Spedali Civili di Brescia, Brescia, Italy
| | - N Foroglou
- Department of Neurosurgery, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
| | - J Lafuente
- Neurosurgery, Hospital Del Mar, Barcelona, Spain
| | - A D Maier
- Department of Neurosurgery, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - B Meyer
- Department of Neurosurgery, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
| | - M Niemelä
- Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - P H Roche
- Department of Neurosurgery, Hôpital Nord, Assistance Publique - Hôpitaux de Marseille, Aix Marseille Université, Marseille, France
| | - F Sala
- Section of Neurosurgery, Department of Neurosciences, Biomedicine and Movement Sciences, University Hospital, Verona, Italy
| | - N Samprón
- Servicio de Neurocirugía, Hospital Universitario Donostia, San Sebastián, Spain
| | - U Sandvik
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Solna, Sweden
| | - K Schaller
- Department of Neurosurgery, Geneva University Medical Center & Faculty of Medicine, Geneva, Switzerland
| | - C Thome
- Department of Neurosurgery, Medical University Innsbruck, Innsbruck, Austria
| | - M Thys
- Neurosciences Department, Grand Hopital de Charleroi, Charleroi, Belgium
| | - M Tisell
- Department of Neurosurgery, Institute of Neuroscience and Physiology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - P Vajkoczy
- Department of Neurosurgery, Charite Universitätsmedizin Berlin, Berlin, Germany
| | - M Visocchi
- Department of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
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Balakrishna B, Menon A, Cao K, Gsänger S, Beil SB, Villalva J, Shyshov O, Martin O, Hirsch A, Meyer B, Kaiser U, Guldi DM, Delius M. Mechanische Verzahnung von einwandigen Kohlenstoffnanoröhren durch dynamisch‐kovalente Bildung von konkaven Disulfidmakrozyklen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bugga Balakrishna
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Arjun Menon
- Department Chemie und Pharmazie & Interdisziplinäres Zentrum für Molekulare Materialien Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstrasse 3 91058 Erlangen Deutschland
| | - Kecheng Cao
- Elektronenmikroskopie der Materialwissenschaften Zentrale Einrichtung für Elektronenmikroskopie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Sebastian Gsänger
- Interdisziplinäres Zentrum für Molekulare Materialien & Computer-Chemie-Zentrum (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Deutschland
| | - Sebastian B. Beil
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Julia Villalva
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Oleksandr Shyshov
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Oliver Martin
- Department Chemie und Pharmazie & Gemeinsames Institut für Angewandte Materialien und Prozesse (ZMP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Deutschland
| | - Andreas Hirsch
- Department Chemie und Pharmazie & Gemeinsames Institut für Angewandte Materialien und Prozesse (ZMP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Deutschland
| | - Bernd Meyer
- Interdisziplinäres Zentrum für Molekulare Materialien & Computer-Chemie-Zentrum (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Deutschland
| | - Ute Kaiser
- Elektronenmikroskopie der Materialwissenschaften Zentrale Einrichtung für Elektronenmikroskopie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Dirk M. Guldi
- Department Chemie und Pharmazie & Interdisziplinäres Zentrum für Molekulare Materialien Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstrasse 3 91058 Erlangen Deutschland
| | - Max Delius
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
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Strecker C, Baerenfaenger M, Miehe M, Spillner E, Meyer B. In Silico Evaluation of the Binding Site of Fucosyltransferase 8 and First Attempts to Synthesize an Inhibitor with Drug-Like Properties. Chembiochem 2020; 21:1923-1931. [PMID: 31194280 DOI: 10.1002/cbic.201900289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Indexed: 12/15/2022]
Abstract
Core fucosylation of N-glycans is catalyzed by fucosyltransferase 8 and is associated with various types of cancer. Most reported fucosyltransferase inhibitors contain non-drug-like features, such as charged groups. New starting points for the development of inhibitors of fucosyltransferase 8 using a fragment-based strategy are presented. Firstly, we discuss the potential of a new putative binding site of fucosyltransferase 8 that, according to a molecular dynamics (MD) simulation, is made accessible by a significant motion of the SH3 domain. This might enable the design of completely new inhibitor types for fucosyltransferase 8. Secondly, we have performed a docking study targeting the donor binding site of fucosyltransferase 8, and this yielded two fragments that were linked and trimmed in silico. The resulting ligand was synthesized. Saturation transfer difference (STD) NMR confirmed binding of the ligand featuring a pyrazole core that mimics the guanine moiety. This ligand represents the first low-molecular-weight compound for the development of inhibitors of fucosyltransferase 8 with drug-like properties.
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Affiliation(s)
- Claas Strecker
- Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
| | - Melissa Baerenfaenger
- Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany.,Present address: Department of Neurology, Radboud University Medical Center, Geert Grooteplein 10, Nijmegen, 6525, GA, The Netherlands
| | - Michaela Miehe
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000, Aarhus, Denmark
| | - Edzard Spillner
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000, Aarhus, Denmark
| | - Bernd Meyer
- Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
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Meyer B, Eschborn S, Schmidt M, Gabriel H, Brill FHH. Advantage of pH-neutral peracetic acid over peracetic acid in reduction of viable count of biofilms. J Hosp Infect 2020; 104:603-604. [PMID: 31870889 DOI: 10.1016/j.jhin.2019.12.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 12/12/2019] [Indexed: 11/26/2022]
Affiliation(s)
- B Meyer
- Ecolab Deutschland GmbH, Monheim am Rhein, Germany.
| | - S Eschborn
- Olympus Winter & Ibe GmbH, Hamburg, Germany
| | - M Schmidt
- Dr. Brill + Partner GmbH Institute for Hygiene and Microbiology, Hamburg, Germany
| | - H Gabriel
- Dr. Brill + Partner GmbH Institute for Hygiene and Microbiology, Hamburg, Germany
| | - F H H Brill
- Dr. Brill + Partner GmbH Institute for Hygiene and Microbiology, Hamburg, Germany
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Varatheeswaran R, Hassan U, Pillen S, Lang P, Yuen K, Meyer B, Kalisch R, Bergmann T. P12 Connectivity-informed concurrent TMS-fMRI for indirect stimulation of the ventromedial prefrontal cortex. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lecamwasam A, Novakovic B, Meyer B, Ekinci E, Dwyer K, Saffery R. SAT-183 DNA METHYLATION PROFILING IDENTIFIES EPIGENTIC DIFFERENCES BETWEEN EARLY VERSUS LATE STAGES OF DIABETIC CHRONIC KIDNEY DISEASE. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Becker L, Stahl K, Meine T, Meyer B, Dewald C, Busch M, David S, Wacker F, Hinrichs J. Abstract No. 416 Two-dimensional perfusion angiography and its suitability in diagnosing and documenting early treatment response in patients with non-occlusive mesenteric ischemia: a retrospective analysis. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Meine T, Werncke T, Kirstein M, Maschke S, Dewald C, Becker L, Wacker F, Meyer B, Hinrichs J. 4:21 PM Abstract No. 61 Transjugular intrahepatic portosystemic shunt creation: guidance of portal vein puncture by use of three-dimensional–two-dimensional fusion of conventional multidetector-computed-tomography and fluoroscopy. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Chen R, Meyer B, Garcia J. A computational model of task allocation in social insects: ecology and interactions alone can drive specialisation. Swarm Intell 2020. [DOI: 10.1007/s11721-020-00180-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AbstractSocial insects allocate their workforce in a decentralised fashion, addressing multiple tasks and responding effectively to environmental changes. This process is fundamental to their ecological success, but the mechanisms behind it are not well understood. While most models focus on internal and individual factors, empirical evidence highlights the importance of ecology and social interactions. To address this gap, we propose a game theoretical model of task allocation. Our main findings are twofold: Firstly, the specialisation emerging from self-organised task allocation can be largely determined by the ecology. Weakly specialised colonies in which all individuals perform more than one task emerge when foraging is cheap; in contrast, harsher environments with high foraging costs lead to strong specialisation in which each individual fully engages in a single task. Secondly, social interactions lead to important differences in dynamic environments. Colonies whose individuals rely on their own experience are predicted to be more flexible when dealing with change than colonies relying on social information. We also find that, counter to intuition, strongly specialised colonies may perform suboptimally, whereas the group performance of weakly specialised colonies approaches optimality. Our simulation results fully agree with the predictions of the mathematical model for the regions where the latter is analytically tractable. Our results are useful in framing relevant and important empirical questions, where ecology and interactions are key elements of hypotheses and predictions.
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Fleischmann M, Gupta R, Wullschläger F, Theil S, Weckbecker D, Meded V, Sharma S, Meyer B, Shallcross S. Perfect and Controllable Nesting in Minimally Twisted Bilayer Graphene. Nano Lett 2020; 20:971-978. [PMID: 31884797 DOI: 10.1021/acs.nanolett.9b04027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Parallel ("nested") regions of a Fermi surface (FS) drive instabilities of the electron fluid, for example, the spin density wave in elemental chromium. In one-dimensional materials, the FS is trivially fully nested (a single nesting vector connects two "Fermi dots"), while in higher dimensions only a fraction of the FS consists of parallel sheets. We demonstrate that the tiny angle regime of twist bilayer graphene (TBLG) possesses a phase, accessible by interlayer bias, in which the FS consists entirely of nestable "Fermi lines", the first example of a completely nested FS in a two-dimensional (2D) material. This nested phase is found both in the ideal as well as relaxed structure of the twist bilayer. We demonstrate excellent agreement with recent STM images of topological states in this material and elucidate the connection between these and the underlying Fermiology. We show that the geometry of the Fermi lines network is controllable by the strength of the applied interlayer bias, and thus TBLG offers unprecedented access to the physics of FS nesting in 2D materials.
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Affiliation(s)
- Maximilian Fleischmann
- Lehrstuhl für Theoretische Festkörperphysik , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Staudtstraße 7-B2 , 91058 Erlangen , Germany
| | - Reena Gupta
- Lehrstuhl für Theoretische Festkörperphysik , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Staudtstraße 7-B2 , 91058 Erlangen , Germany
| | - Florian Wullschläger
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC) , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nägelsbachstraße 25 , 91052 Erlangen , Germany
| | - Simon Theil
- Lehrstuhl für Theoretische Festkörperphysik , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Staudtstraße 7-B2 , 91058 Erlangen , Germany
| | - Dominik Weckbecker
- Lehrstuhl für Theoretische Festkörperphysik , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Staudtstraße 7-B2 , 91058 Erlangen , Germany
| | - Velimir Meded
- Intitute of Nanotechnology , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Sangeeta Sharma
- Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy , Max-Born Straße 2A , 12489 Berlin , Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC) , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nägelsbachstraße 25 , 91052 Erlangen , Germany
| | - Samuel Shallcross
- Lehrstuhl für Theoretische Festkörperphysik , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Staudtstraße 7-B2 , 91058 Erlangen , Germany
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Bochynek T, Burd M, Kleineidam C, Meyer B. Infrastructure construction without information exchange: the trail clearing mechanism in Atta leafcutter ants. Proc Biol Sci 2020; 286:20182539. [PMID: 30963954 DOI: 10.1098/rspb.2018.2539] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A wide range of group-living animals construct tangible infrastructure networks, often of remarkable size and complexity. In ant colonies, infrastructure construction may require tens of thousands of work hours distributed among many thousand individuals. What are the individual behaviours involved in the construction and what level of complexity in inter-individual interaction is required to organize this effort? We investigate this question in one of the most sophisticated trail builders in the animal world: the leafcutter ants, which remove leaf litter, cut through overhangs and shift soil to level the path of trail networks that may cumulatively extend for kilometres. Based on obstruction experiments in the field and the laboratory, we identify and quantify different individual trail clearing behaviours. Via a computational model, we further investigate the presence of recruitment, which-through direct or indirect information transfer between individuals-is one of the main organizing mechanisms of many collective behaviours in ants. We show that large-scale transport networks can emerge purely from the stochastic process of workers encountering obstructions and subsequently engaging in removal behaviour with a fixed probability. In addition to such incidental removal, we describe a dedicated clearing behaviour in which workers remove additional obstructions independent of chance encounters. We show that to explain the dynamics observed in the experiments, no information exchange (e.g. via recruitment) is required, and propose that large-scale infrastructure construction of this type can be achieved without coordination between individuals.
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Affiliation(s)
- Thomas Bochynek
- 1 Department of Electrical Engineering and Computer Science, Northwestern University , Evanston, IL , USA
| | - Martin Burd
- 4 School of Biological Sciences, Monash University , Melbourne, Victoria , Australia
| | - Christoph Kleineidam
- 2 Department of Biology, University of Konstanz , Konstanz , Germany.,3 Centre for the Advanced Study of Collective Behaviour, University of Konstanz , Konstanz , Germany
| | - Bernd Meyer
- 5 Faculty of Information Technology, Monash University , Melbourne, Victoria , Australia
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Schön S, Cabello J, Liesche-Starnecker F, Molina-Romero M, Eichinger P, Metz M, Karimov I, Preibisch C, Keupp J, Hock A, Meyer B, Weber W, Zimmer C, Pyka T, Yakushev I, Gempt J, Wiestler B. Imaging glioma biology: spatial comparison of amino acid PET, amide proton transfer, and perfusion-weighted MRI in newly diagnosed gliomas. Eur J Nucl Med Mol Imaging 2020; 47:1468-1475. [PMID: 31953672 PMCID: PMC7188730 DOI: 10.1007/s00259-019-04677-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 12/30/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Imaging glioma biology holds great promise to unravel the complex nature of these tumors. Besides well-established imaging techniques such O-(2-[18F]fluoroethyl)-L-tyrosine (FET)-PET and dynamic susceptibility contrast (DSC) perfusion imaging, amide proton transfer-weighted (APTw) imaging has emerged as a promising novel MR technique. In this study, we aimed to better understand the relation between these imaging biomarkers and how well they capture cellularity and vascularity in newly diagnosed gliomas. METHODS Preoperative MRI and FET-PET data of 46 patients (31 glioblastoma and 15 lower-grade glioma) were segmented into contrast-enhancing and FLAIR-hyperintense areas. Using established cutoffs, we calculated hot-spot volumes (HSV) and their spatial overlap. We further investigated APTw and CBV values in FET-HSV. In a subset of 10 glioblastoma patients, we compared cellularity and vascularization in 34 stereotactically targeted biopsies with imaging. RESULTS In glioblastomas, the largest HSV was found for APTw, followed by PET and CBV (p < 0.05). In lower-grade gliomas, APTw-HSV was clearly lower than in glioblastomas. The spatial overlap of HSV was highest between APTw and FET in both tumor entities and regions. APTw correlated significantly with cellularity, similar to FET, while the association with vascularity was more pronounced in CBV and FET. CONCLUSIONS We found a relevant spatial overlap in glioblastomas between hotspots of APTw and FET both in contrast-enhancing and FLAIR-hyperintense tumor. As suggested by earlier studies, APTw was lower in lower-grade gliomas compared with glioblastomas. APTw meaningfully contributes to biological imaging of gliomas.
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Affiliation(s)
- S Schön
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - J Cabello
- Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - F Liesche-Starnecker
- Department of Neuropathology, Institute of Pathology, Technical University of Munich, Munich, Germany
| | - M Molina-Romero
- Image-based Biomedical Modeling, Technical University of Munich, Munich, Germany
| | - P Eichinger
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - M Metz
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - I Karimov
- Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - C Preibisch
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - J Keupp
- Philips Research, Hamburg, Germany
| | - A Hock
- Philips Health Systems, Zurich, Switzerland
| | - B Meyer
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - W Weber
- Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - C Zimmer
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - T Pyka
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - I Yakushev
- Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - J Gempt
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - B Wiestler
- Department of Neuroradiology, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
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De Leoz MLA, Duewer DL, Fung A, Liu L, Yau HK, Potter O, Staples GO, Furuki K, Frenkel R, Hu Y, Sosic Z, Zhang P, Altmann F, Grunwald-Grube C, Shao C, Zaia J, Evers W, Pengelley S, Suckau D, Wiechmann A, Resemann A, Jabs W, Beck A, Froehlich JW, Huang C, Li Y, Liu Y, Sun S, Wang Y, Seo Y, An HJ, Reichardt NC, Ruiz JE, Archer-Hartmann S, Azadi P, Bell L, Lakos Z, An Y, Cipollo JF, Pucic-Bakovic M, Štambuk J, Lauc G, Li X, Wang PG, Bock A, Hennig R, Rapp E, Creskey M, Cyr TD, Nakano M, Sugiyama T, Leung PKA, Link-Lenczowski P, Jaworek J, Yang S, Zhang H, Kelly T, Klapoetke S, Cao R, Kim JY, Lee HK, Lee JY, Yoo JS, Kim SR, Suh SK, de Haan N, Falck D, Lageveen-Kammeijer GSM, Wuhrer M, Emery RJ, Kozak RP, Liew LP, Royle L, Urbanowicz PA, Packer NH, Song X, Everest-Dass A, Lattová E, Cajic S, Alagesan K, Kolarich D, Kasali T, Lindo V, Chen Y, Goswami K, Gau B, Amunugama R, Jones R, Stroop CJM, Kato K, Yagi H, Kondo S, Yuen CT, Harazono A, Shi X, Magnelli PE, Kasper BT, Mahal L, Harvey DJ, O'Flaherty R, Rudd PM, Saldova R, Hecht ES, Muddiman DC, Kang J, Bhoskar P, Menard D, Saati A, Merle C, Mast S, Tep S, Truong J, Nishikaze T, Sekiya S, Shafer A, Funaoka S, Toyoda M, de Vreugd P, Caron C, Pradhan P, Tan NC, Mechref Y, Patil S, Rohrer JS, Chakrabarti R, Dadke D, Lahori M, Zou C, Cairo C, Reiz B, Whittal RM, Lebrilla CB, Wu L, Guttman A, Szigeti M, Kremkow BG, Lee KH, Sihlbom C, Adamczyk B, Jin C, Karlsson NG, Örnros J, Larson G, Nilsson J, Meyer B, Wiegandt A, Komatsu E, Perreault H, Bodnar ED, Said N, Francois YN, Leize-Wagner E, Maier S, Zeck A, Heck AJR, Yang Y, Haselberg R, Yu YQ, Alley W, Leone JW, Yuan H, Stein SE. NIST Interlaboratory Study on Glycosylation Analysis of Monoclonal Antibodies: Comparison of Results from Diverse Analytical Methods. Mol Cell Proteomics 2020; 19:11-30. [PMID: 31591262 PMCID: PMC6944243 DOI: 10.1074/mcp.ra119.001677] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/26/2019] [Indexed: 01/24/2023] Open
Abstract
Glycosylation is a topic of intense current interest in the development of biopharmaceuticals because it is related to drug safety and efficacy. This work describes results of an interlaboratory study on the glycosylation of the Primary Sample (PS) of NISTmAb, a monoclonal antibody reference material. Seventy-six laboratories from industry, university, research, government, and hospital sectors in Europe, North America, Asia, and Australia submitted a total of 103 reports on glycan distributions. The principal objective of this study was to report and compare results for the full range of analytical methods presently used in the glycosylation analysis of mAbs. Therefore, participation was unrestricted, with laboratories choosing their own measurement techniques. Protein glycosylation was determined in various ways, including at the level of intact mAb, protein fragments, glycopeptides, or released glycans, using a wide variety of methods for derivatization, separation, identification, and quantification. Consequently, the diversity of results was enormous, with the number of glycan compositions identified by each laboratory ranging from 4 to 48. In total, one hundred sixteen glycan compositions were reported, of which 57 compositions could be assigned consensus abundance values. These consensus medians provide community-derived values for NISTmAb PS. Agreement with the consensus medians did not depend on the specific method or laboratory type. The study provides a view of the current state-of-the-art for biologic glycosylation measurement and suggests a clear need for harmonization of glycosylation analysis methods.
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Affiliation(s)
- Maria Lorna A De Leoz
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899.
| | - David L Duewer
- Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
| | - Adam Fung
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Lily Liu
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Hoi Kei Yau
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Oscar Potter
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Gregory O Staples
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Kenichiro Furuki
- Astellas Pharma, 5-2-3 Tokodai, Tsukiba, Ibaraki, 300-2698, Japan
| | - Ruth Frenkel
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Yunli Hu
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Zoran Sosic
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Peiqing Zhang
- Bioprocessing Technology Institute, 20 Biopolis Way, Level 3 Singapore 138668
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Clemens Grunwald-Grube
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Chun Shao
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Waltraud Evers
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | | | - Detlev Suckau
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Wiechmann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Resemann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Wolfgang Jabs
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany; Department of Life Sciences & Technology, Beuth Hochschule für Technik Berlin, Seestraβe 64, 13347 Berlin, Germany
| | - Alain Beck
- Centre d'Immunologie Pierre Fabre, 5 Avenue Napoléon III, BP 60497, 74164 St Julien-en-Genevois, France
| | - John W Froehlich
- Department of Urology, Boston Children's Hospital, 300 Longwood Avenue Boston Massachusetts 02115
| | - Chuncui Huang
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yan Li
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaming Liu
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Shiwei Sun
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaojun Wang
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Youngsuk Seo
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | | | | | - Stephanie Archer-Hartmann
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Parastoo Azadi
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Len Bell
- BioCMC Solutions (Large Molecules), Covance Laboratories Limited, Otley Road, Harrogate, North Yorks HG3 1PY, United Kingdom
| | - Zsuzsanna Lakos
- Biochemistry Method Development & Validation, Eurofins Lancaster Laboratories, Inc., 2425 New Holland Pike Lancaster, Pennsylvania 17601
| | - Yanming An
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - John F Cipollo
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - Maja Pucic-Bakovic
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Jerko Štambuk
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Gordan Lauc
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia; Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, 10 000 Zagreb, Croatia
| | - Xu Li
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Peng George Wang
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Andreas Bock
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - René Hennig
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - Erdmann Rapp
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany; AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Marybeth Creskey
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Terry D Cyr
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Miyako Nakano
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | - Taiki Sugiyama
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | | | - Paweł Link-Lenczowski
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Jolanta Jaworek
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Shuang Yang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Tim Kelly
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Song Klapoetke
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Rui Cao
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Jin Young Kim
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Hyun Kyoung Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Ju Yeon Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Jong Shin Yoo
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Sa-Rang Kim
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Soo-Kyung Suh
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - David Falck
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | | | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Robert J Emery
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Radoslaw P Kozak
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Li Phing Liew
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Louise Royle
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Paulina A Urbanowicz
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Nicolle H Packer
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Xiaomin Song
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Arun Everest-Dass
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Erika Lattová
- Proteomics, Central European Institute for Technology, Masaryk University, Kamenice 5, A26, 625 00 BRNO, Czech Republic
| | - Samanta Cajic
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Kathirvel Alagesan
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Daniel Kolarich
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Toyin Kasali
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Viv Lindo
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Yuetian Chen
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Kudrat Goswami
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Brian Gau
- Analytical R&D, MilliporeSigma, 2909 Laclede Ave. St. Louis, Missouri 63103
| | - Ravi Amunugama
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | - Richard Jones
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | | | - Koichi Kato
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787 Japan; Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Hirokazu Yagi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Sachiko Kondo
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan; Medical & Biological Laboratories Co., Ltd, 2-22-8 Chikusa, Chikusa-ku, Nagoya 464-0858 Japan
| | - C T Yuen
- National Institute for Biological Standards and Control, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG United Kingdom
| | - Akira Harazono
- Division of Biological Chemistry & Biologicals, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501 Japan
| | - Xiaofeng Shi
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Paula E Magnelli
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Brian T Kasper
- New York University, 100 Washington Square East New York City, New York 10003
| | - Lara Mahal
- New York University, 100 Washington Square East New York City, New York 10003
| | - David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
| | - Roisin O'Flaherty
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Pauline M Rudd
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Radka Saldova
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Elizabeth S Hecht
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - David C Muddiman
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - Jichao Kang
- Pantheon, 201 College Road East Princeton, New Jersey 08540
| | | | | | - Andrew Saati
- Pfizer Inc., 1 Burtt Road Andover, Massachusetts 01810
| | - Christine Merle
- Proteodynamics, ZI La Varenne 20-22 rue Henri et Gilberte Goudier 63200 RIOM, France
| | - Steven Mast
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Sam Tep
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Jennie Truong
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Takashi Nishikaze
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Sadanori Sekiya
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Aaron Shafer
- Children's GMP LLC, St. Jude Children's Research Hospital, 262 Danny Thomas Place Memphis, Tennessee 38105
| | - Sohei Funaoka
- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
| | - Masaaki Toyoda
- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
| | - Peter de Vreugd
- Synthon Biopharmaceuticals, Microweg 22 P.O. Box 7071, 6503 GN Nijmegen, The Netherlands
| | - Cassie Caron
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Pralima Pradhan
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Niclas Chiang Tan
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Yehia Mechref
- Department of Chemistry and Biochemistry, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409
| | - Sachin Patil
- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
| | - Jeffrey S Rohrer
- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
| | - Ranjan Chakrabarti
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Disha Dadke
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Mohammedazam Lahori
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Chunxia Zou
- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Christopher Cairo
- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Béla Reiz
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Randy M Whittal
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Carlito B Lebrilla
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Lauren Wu
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Andras Guttman
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary
| | - Marton Szigeti
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary; Translational Glycomics Research Group, Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprem, Egyetem ut 10, Hungary
| | - Benjamin G Kremkow
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Kelvin H Lee
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Medicinaregatan 1G SE 41390 Gothenburg, Sweden
| | - Barbara Adamczyk
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Jessica Örnros
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Bernd Meyer
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Alena Wiegandt
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Emy Komatsu
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Helene Perreault
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Edward D Bodnar
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2; Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Nassur Said
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Yannis-Nicolas Francois
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Emmanuelle Leize-Wagner
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Sandra Maier
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Anne Zeck
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Albert J R Heck
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Yang Yang
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Rob Haselberg
- Division of Bioanalytical Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, de Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
| | - Ying Qing Yu
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | - William Alley
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | | | - Hua Yuan
- Zoetis, 333 Portage St. Kalamazoo, Michigan 49007
| | - Stephen E Stein
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
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Krzack S, Schimpke R, Kuchling T, Kureti S, Meyer B. Innovationen für die Kohlenstoffkreislaufwirtschaft: Institut für Energieverfahrenstechnik und Chemieingenieurwesen an der TU Bergakademie Freiberg. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202070106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Affiliation(s)
- Constanze Jung
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Reaktionstechnik Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Peter Seifert
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Energieverfahrenstechnik und Thermische Rückstandsbehandlung Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Friedemann Mehlhose
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Energieverfahrenstechnik und Thermische Rückstandsbehandlung Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Christoph Hahn
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Reaktionstechnik Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Daniel Schröder
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Reaktionstechnik Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Christian Wolfersdorf
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Energieverfahrenstechnik und Thermische Rückstandsbehandlung Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Sven Kureti
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Reaktionstechnik Fuchsmühlenweg 9 09599 Freiberg Deutschland
| | - Bernd Meyer
- TU Bergakademie FreibergInstitut für Energieverfahrenstechnik und Chemieingenieurwesen, Professur für Energieverfahrenstechnik und Thermische Rückstandsbehandlung Fuchsmühlenweg 9 09599 Freiberg Deutschland
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