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Plate RC, Jones C, Zhao S, Flum MW, Steinberg J, Daley G, Corbett N, Neumann C, Waller R. "But not the music": psychopathic traits and difficulties recognising and resonating with the emotion in music. Cogn Emot 2023; 37:748-762. [PMID: 37104122 DOI: 10.1080/02699931.2023.2205105] [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: 02/25/2022] [Revised: 12/23/2022] [Accepted: 04/05/2023] [Indexed: 04/28/2023]
Abstract
Recognising and responding appropriately to emotions is critical to adaptive psychological functioning. Psychopathic traits (e.g. callous, manipulative, impulsive, antisocial) are related to differences in recognition and response when emotion is conveyed through facial expressions and language. Use of emotional music stimuli represents a promising approach to improve our understanding of the specific emotion processing difficulties underlying psychopathic traits because it decouples recognition of emotion from cues directly conveyed by other people (e.g. facial signals). In Experiment 1, participants listened to clips of emotional music and identified the emotional content (Sample 1, N = 196) or reported on their feelings elicited by the music (Sample 2, N = 197). Participants accurately recognised (t(195) = 32.78, p < .001, d = 4.69) and reported feelings consistent with (t(196) = 7.84, p < .001, d = 1.12) the emotion conveyed in the music. However, psychopathic traits were associated with reduced emotion recognition accuracy (F(1, 191) = 19.39, p < .001) and reduced likelihood of feeling the emotion (F(1, 193) = 35.45, p < .001), particularly for fearful music. In Experiment 2, we replicated findings for broad difficulties with emotion recognition (Sample 3, N = 179) and emotional resonance (Sample 4, N = 199) associated with psychopathic traits. Results offer new insight into emotion recognition and response difficulties that are associated with psychopathic traits.
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Affiliation(s)
- R C Plate
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - C Jones
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - S Zhao
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - M W Flum
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - J Steinberg
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - G Daley
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - N Corbett
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
| | - C Neumann
- Department of Psychology, University of North Texas, Denton, TX, USA
| | - R Waller
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
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Lang S, Loibl M, Gläsner J, Simon M, Rupp M, Grad S, Neumann C, Alt V, Gessner A, Hanses F. Vertebral osteomyelitis is characterised by increased RANK/OPG and RANKL/OPG expression ratios in vertebral bodies and intervertebral discs. Eur Cell Mater 2021; 42:438-451. [PMID: 34846723 DOI: 10.22203/ecm.v042a27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Vertebral osteomyelitis (VO) is an infection of the spine mainly caused by bacterial pathogens. The pathogenesis leading to destruction of intervertebral discs (IVDs) and adjacent vertebral bodies (VBs) is poorly described. The present study aimed at investigating the connection between infection and bone/disc metabolism in VO patients. 14 patients with VO (infection group) and 14 patients with burst fractures of the spine (fracture group; control) were included prospectively. Tissue biopsies from affected IVDs and adjacent VBs were analysed by RT-qPCR for mRNA-expression levels of 18 target genes including chemokines, adipokines and genes involved in bone metabolism. Most importantly, the receptor activator of NF-κB/osteoprotegerin (RANK/OPG) expression ratio was drastically elevated in both VBs and IVDs of the infection group. In parallel, expression of genes of the prostaglandin-E2-dependent prostanoid system was induced. Such genes regulate tissue degradation processes via the triad OPG/RANK/RANKL as well as via the chemokines IL-8 and CCL-20, whose expression was also found to be increased upon infection. The gene expression of the adipokine leptin, which promotes inflammatory tissue degradation, was higher in IVD tissue of the infection group, whereas the transcription of omentin and resistin genes, whose functions are largely unknown in the context of infectious diseases, was lower in infected VBs. In summary, similar expression patterns of pro-inflammatory cytokines and pro-osteoclastogenic factors were identified in VBs and IVDs of patients suffering from VO. This suggests that common immuno-metabolic pathways are involved in the mechanisms leading to tissue degradation in VBs and IVDs during VO.
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Affiliation(s)
| | - M Loibl
- Department of Trauma Surgery, University Hospital Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg,
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Booth G, Knight R, Harlan R, Peterson K, Jacoby C, Berklich E, Slater S, Allen B, Neumann C, Dela Cruz J, Meyers G, Cook R, Maziarz R, Newell L. Characterization of chronic GVHD after day 4 versus day 5 G-CSF mobilized HLA-matched sibling donor allogeneic hematopoietic cell transplantation. Cytotherapy 2021. [DOI: 10.1016/s1465324921003881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Neumann C, Knight R, Booth G, Dela Cruz J, Maziarz R, Newell L. Second autologous hematopoietic cell transplantation using long-term cryopreserved cells is associated with increased platelet transfusion support and hospital readmissions, but not delayed engraftment. Cytotherapy 2021. [DOI: 10.1016/s146532492100387x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Neumann C, Elinkmann L, Rogge L, Wieneke M, Dach F, Schwartbeck B, Kahl B. WS13.4 Unraveling antibiotic resistance mechanisms and dynamics of resistant Staphylococcus aureus isolates during chronic airway infection in cystic fibrosis patients. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)00990-5] [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: 10/21/2022]
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Demiya S, Neumann C, Chu C, Chand K, Yu E. PNS2 Voice Technology - an Opportunity to Broaden Participation in Patient Reported Outcomes Research. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Max JB, Kowalczuk K, Köhler M, Neumann C, Pielenz F, Sigolaeva LV, Pergushov DV, Turchanin A, Langenhorst F, Schacher FH. Polyampholytic Poly(dehydroalanine) Graft Copolymers as Smart Templates for pH-Controlled Formation of Alloy Nanoparticles. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- J. B. Max
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - K. Kowalczuk
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - M. Köhler
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - C. Neumann
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Physical Chemistry (IPC), Friedrich-Schiller-University Jena, Lessingstraße 10, D-07743 Jena, Germany
| | - F. Pielenz
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - L. V. Sigolaeva
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - D. V. Pergushov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - A. Turchanin
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Physical Chemistry (IPC), Friedrich-Schiller-University Jena, Lessingstraße 10, D-07743 Jena, Germany
| | - F. Langenhorst
- Institute of Geoscience, Friedrich-Schiller-University Jena, Carl-Zeiss-Promenade 10, D-07743 Jena, Germany
| | - F. H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
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Werner P, Neumann C, Eiber M, Wester HJ, Schottelius M. [ 99cmTc]Tc-PSMA-I&S-SPECT/CT: experience in prostate cancer imaging in an outpatient center. EJNMMI Res 2020; 10:45. [PMID: 32382945 PMCID: PMC7205926 DOI: 10.1186/s13550-020-00635-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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: 01/24/2020] [Accepted: 04/22/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Prostate-specific membrane antigen (PSMA) SPECT imaging in prostate cancer (PCa) could be a valuable alternative in regions where access to PSMA-PET imaging is restricted. [99mTc]Tc-PSMA-I&S is a new 99mTc-labeled PSMA-targeting SPECT agent, initially developed for radio-guided surgery. We report on the diagnostic use of [99mTc]Tc-PSMA-I&S-SPECT/CT in PCa. RESULTS [99mTc]Tc-PSMA-I&S-SPECT/CT was performed and evaluated in 210 outpatients with PCa at a single center. Patients were imaged for biochemical recurrence (BCR, n = 152, mean PSA 8.7 ng/ml), for primary staging of high-risk PCa (n = 12, mean PSA 393 ng/ml), and restaging in advanced recurrent PCa (n = 46, mean PSA 101.3 ng/ml). Number and location of positive lesions were determined for the different subgroups. For BCR, detection rates were calculated, defined as the proportion of scans with at least one PSMA-positive lesion. PSMA positive lesions were detected in 65.2% of all 210 patients. Tumor tissue was mainly detected in lymph nodes (59%), in the bone (42%), and in the prostate (fossa) (28%). In the subgroup of patients referred for detection of BCR the detection rate increased from 20% at a PSA level < 1 ng/ml to 82.9% and 100% at PSA levels > 4 ng/ml and > 10 ng/ml, respectively. In the subgroup of high-risk patients referred for primary staging, 42% demonstrated metastatic disease. Restaging of advanced recurrent PCa revealed detectability of PSMA positive tumor lesions in 85% of the scans. CONCLUSIONS [99mTc]Tc-PSMA-I&S-SPECT/CT was useful in PSMA-targeted imaging of PCa at various clinical stages. At low PSA levels (< 4 ng/ml), detection rates of [99mTc]Tc-PSMA-I&S-SPECT/CT in BCR are clearly inferior to data reported for PET-imaging and should thus only be considered for lesion detection if imaging with PET is unavailable. However, at higher PSA levels (> 4 ng/ml) [99mTc]Tc-PSMA-I&S-SPECT/CT provides high detection rates in BCR. [99mTc]Tc-PSMA-I&S-SPECT/CT can also be used for primary staging and for restaging of advanced recurrent PCa. However, further studies are needed to assess the clinical value in these indications.
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Affiliation(s)
- P Werner
- Nuclear Medicine Neumann, Outpatient Practice for Nuclear Medicine, Leipzig, Germany
| | - C Neumann
- Nuclear Medicine Neumann, Outpatient Practice for Nuclear Medicine, Leipzig, Germany
| | - M Eiber
- Department of Nuclear Medicine, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
| | - H J Wester
- Pharmaceutical Radiochemistry, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
| | - M Schottelius
- Pharmaceutical Radiochemistry, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany.
- Department of Nuclear Medicine, Centre Hospitalier Universitaire Vaudois, and Department of Oncology, University of Lausanne, Lausanne, Switzerland.
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Lübben M, Cüppers F, Mohr J, von Witzleben M, Breuer U, Waser R, Neumann C, Valov I. Design of defect-chemical properties and device performance in memristive systems. Sci Adv 2020; 6:eaaz9079. [PMID: 32548248 PMCID: PMC7272230 DOI: 10.1126/sciadv.aaz9079] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/24/2020] [Indexed: 05/24/2023]
Abstract
Future development of the modern nanoelectronics and its flagships internet of things, artificial intelligence, and neuromorphic computing is largely associated with memristive elements, offering a spectrum of inevitable functionalities, atomic level scalability, and low-power operation. However, their development is limited by significant variability and still phenomenologically orientated materials' design strategy. Here, we highlight the vital importance of materials' purity, demonstrating that even parts-per-million foreign elements substantially change performance. Appropriate choice of chemistry and amount of doping element selectively enhances the desired functionality. Dopant/impurity-dependent structure and charge/potential distribution in the space-charge layers and cell capacitance determine the device kinetics and functions. The relation between chemical composition/purity and switching/neuromorphic performance is experimentally evidenced, providing directions for a rational design of future memristive devices.
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Affiliation(s)
- M. Lübben
- Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen, Germany
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
| | - F. Cüppers
- Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen, Germany
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
| | - J. Mohr
- Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen, Germany
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
| | - M. von Witzleben
- Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen, Germany
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
| | - U. Breuer
- Central Institute for Engineering, Electronics and Analytics, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - R. Waser
- Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen, Germany
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
- Peter-Grünberg-Institut (PGI 7), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany
| | - C. Neumann
- Heraeus Deutschland GmbH & Co. KG Heraeusstrasse 12-14, 63450 Hanau, Germany
| | - I. Valov
- JARA–Fundamentals for Future Information Technology, 52425 Jülich, Germany
- Peter-Grünberg-Institut (PGI 7), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany
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10
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Bräuer D, Neumann C. Camera-based sample-position detection and control for microgravity electrostatic levitation. Rev Sci Instrum 2020; 91:043904. [PMID: 32357737 DOI: 10.1063/1.5121883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
This paper presents a method for high-speed sample detection and position control in an electrostatic levitator. The algorithm uses images acquired from two charge coupled device cameras and allows for robust and reliable detection of the sample position under various process conditions. The results show improvements over position sensitive detector systems especially under harsh environments and during autonomous operation under microgravity conditions. The position of samples with a radius from 0.6 mm to 1.1 mm is detected in three dimensions with an accuracy of ±40 μm inside a 7 mm × 7 mm × 7 mm levitation area. The two orthogonally arranged cameras, recording images at a resolution of 260 px × 260 px, are used to calculate the position every 5 ms. The control model and the corresponding position controller for the three axes are presented as well. The system was successfully tested in the laboratory and under microgravity conditions at the drop tower, during parabolic flights, and on the MAPHEUS sounding rocket.
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Affiliation(s)
- D Bräuer
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - C Neumann
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
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Ausdemore M, Neumann C. Deconvolution of dust mixtures. Forensic Sci Int 2020; 308:110144. [DOI: 10.1016/j.forsciint.2020.110144] [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: 10/22/2019] [Accepted: 01/06/2020] [Indexed: 10/25/2022]
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Sørensen K, Neumann C, Dähne M, Hansen KA, Wahlberg M. Gentoo penguins ( Pygoscelis papua) react to underwater sounds. R Soc Open Sci 2020; 7:191988. [PMID: 32257350 PMCID: PMC7062047 DOI: 10.1098/rsos.191988] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/31/2020] [Indexed: 06/11/2023]
Abstract
Marine mammals and diving birds face several physiological challenges under water, affecting their thermoregulation and locomotion as well as their sensory systems. Therefore, marine mammals have modified ears for improved underwater hearing. Underwater hearing in birds has been studied in a few species, but for the record-holding divers, such as penguins, there are no detailed data. We played underwater noise bursts to gentoo penguins (Pygoscelis papua) in a large tank at received sound pressure levels between 100 and 120 dB re 1 µPa RMS. The penguins showed a graded reaction to the noise bursts, ranging from no reactions at 100 dB to strong reactions in more than 60% of the playbacks at 120 dB re 1 µPa. The responses were always directed away from the sound source. The fact that penguins can detect and react to underwater stimuli may indicate that they make use of sound stimuli for orientation and prey detection during dives. Further, it suggests that penguins may be sensitive to anthropogenic noise, like many species of marine mammals.
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Affiliation(s)
- K. Sørensen
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - C. Neumann
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - M. Dähne
- German Oceanographic Museum Foundation, Katharinenberg 14-20, 18439 Stralsund, Germany
| | - K. A. Hansen
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - M. Wahlberg
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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Hamerla C, Neumann C, Falahati K, von Cosel J, van Wilderen LJGW, Niraghatam MS, Kern-Michler D, Mielke N, Reinfelds M, Rodrigues-Correia A, Heckel A, Bredenbeck J, Burghardt I. Photochemical mechanism of DEACM uncaging: a combined time-resolved spectroscopic and computational study. Phys Chem Chem Phys 2020; 22:13418-13430. [DOI: 10.1039/c9cp07032j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Combined spectroscopic and computational studies elucidate excited-state photocleavage in DEACM cages, explaining vastly different time scales for different leaving groups.
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Hendricks JH, Neumann C. A Bayesian approach for the analysis of error rate studies in forensic science. Forensic Sci Int 2019; 306:110047. [PMID: 31821943 DOI: 10.1016/j.forsciint.2019.110047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 05/10/2019] [Revised: 10/23/2019] [Accepted: 11/05/2019] [Indexed: 11/30/2022]
Abstract
Over the past decade, the field of forensic science has received recommendations from the National Research Council of the U.S. National Academy of Sciences, the U.S. National Institute of Standards and Technology, and the U.S. President's Council of Advisors on Science and Technology to study the validity and reliability of forensic analyses. More specifically, these committees recommend estimation of the rates of occurrence of erroneous conclusions drawn from forensic analyses. "Black box" studies for the various subjective feature-based comparison methods are intended for this purpose. In general, "black box" studies often have unbalanced designs, comparisons that are not independent, and missing data. These aspects pose difficulty in the analysis of the results and are often ignored. Instead, interpretation of the data relies on methods that assume independence between observations and a balanced experiment. Furthermore, all of these projects are interpreted within the frequentist framework and result in point estimates associated with confidence intervals that are confusing to communicate and understand. We propose to use an existing likelihood-free Bayesian inference method, called Approximate Bayesian Computation (ABC), that is capable of handling unbalanced designs, dependencies among the observations, and missing data. ABC allows for studying the parameters of interest without recourse to incoherent and misleading measures of uncertainty such as confidence intervals. By taking into account information from all decision categories for a given examiner and information from the population of examiners, our method also allows for quantifying the risk of error for the given examiner, even when no error has been recorded for that examiner. This opens the door to the detection of behavioural patterns in the decision-making of examiners through their ABC rate estimates. These patterns could be used to detect error prone examiners, enabling additional training efforts to be more tailored to each examiner, limiting the risk of errors before they occur. We illustrate our proposed method by reanalysing the results of the "Noblis Black Box" study by Ulery et al. [18]. We did not choose this study because we disagree with their results, but because it is a good example of a study with dependent observations and missing data, and the data is publicly available. The ABC estimates for the population generally agreed with Ulery et al.'s plug-in estimates. However, credible intervals obtained from ABC are much wider than the confidence intervals for the corresponding parameter estimates that did not account for the dependencies among observations.
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Affiliation(s)
- J H Hendricks
- Department of Mathematics and Statistics, South Dakota State University, AME Building Box 2225, Brookings, SD, USA.
| | - C Neumann
- Department of Mathematics and Statistics, South Dakota State University, AME Building Box 2225, Brookings, SD, USA.
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Balter M, Neumann C, Bräuer D, Dreißigacker C, Steinbach S. ARTEC-A furnace module for directional solidification and quenching experiments in microgravity. Rev Sci Instrum 2019; 90:125117. [PMID: 31893778 DOI: 10.1063/1.5124822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
A new experimental design for directional solidification experiments with high cooling rates under microgravity conditions is presented. The aerogel-based furnace module ARTEC (AeRogel TEchnology for Cast alloys) developed at DLR extends the earlier presented sounding rocket facility ARTEX by enabling a transition from low to high solidification velocities and a simultaneous operation of five independent furnaces in the same sounding rocket module. The furnaces for directional solidification are equipped with thermally insulating aerogels as a crucible material. Their optical transparency allows the control of the solidification parameters (velocity and temperature gradient) with optical methods in the lab. In ARTEC, a drastically increased solidification velocity is achieved by contacting the sample with a movable cooling-rod during processing. Therefore, a better theoretical understanding of the influence of a sudden change in solidification velocity on microstructure formation is obtained. Carrying out experiments in microgravity gives access to purely diffusive solidification conditions. Hence, convection free-growth can be compared with growth subject to natural (earth) and/or forced-convection (earth and space). Furthermore, alloys with high density differences in their alloy components and, hence, also between the primary solidifying phase and the surrounding liquid can be studied without the negative influence of fluid-flow or macrosegregation being present.
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Affiliation(s)
- M Balter
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - C Neumann
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - D Bräuer
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - C Dreißigacker
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - S Steinbach
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
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Pogorelic Z, Neumann C, Jukic M. An unusual presentation of testicular torsion in children: a single - centre retrospective study. Can J Urol 2019; 26:10026-10032. [PMID: 31860419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION The aim of this study was to investigate demographic and clinical characteristics and outcomes of the treatments of the patients with an unusual presentation of the testicular torsion (TT) and to clarify their peculiarities. MATERIAL AND METHODS From January 1999 until December 2017, the case records of 149 patients who underwent surgery for TT were retrospectively reviewed. Out of that number, 25 patients were identified with unusual presentation of an acute scrotum (14 patients who presented with an abdominal pain only, and 11 who presented with testicular torsion in inguinal canal). RESULTS The median age of all children with TT at the time of surgery was 14 years. The duration of the symptoms varied substantially and ranged from 1 hour to 120 hours with a median of 6 hours, with only 63 (42.3%) out of the 149 patients staying below the golden 6 hours. Only 2/11 (18.2%) children of the inguinal group and 5/14 (35.71%) children of the abdominal group presented within 6 hours. In the group with inguinal TT the median age was 13 years with the median duration of symptoms of 24 hours. The symptoms were mostly abdominal pain (90.9%), followed by groin pain (45.5%) and nausea (45.5%). In 6 out of 11 children, the first physical examination did not include a genital examination. In the group with abdominal pain, the a median age was 13 years, with median duration of symptoms of 17 hours. The symptoms were limited, besides the abdominal pain, to groin pain (42.8%) and nausea (50%). In 9 out of 14 children, the first physical examination did not include a genital examination. The rate of orchidectomy in the inguinal TT group was 54.5%, while in the abdominal group 57.1%. CONCLUSION Testicular torsion, particulary in regard to torsion in the inguinal canal or presenting dominantly with abdominal pain can be easily misdiagnosed, but needs to be recognized on time, to salvage the affected testicle. The complete physical examination, including the genital examination, needs to be performed in each male patient presenting with lower abdominal or groin pain.
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Affiliation(s)
- Zenon Pogorelic
- Department of Pediatric Surgery, University Hospital of Split, Split, Croatia
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Heichel J, Neumann C, Bethmann D, Siebolts U, Hammer T, Struck HG. [Dacryoliths and Iatrogenic Foreign Bodies as Classical Triggers for Inflammatory Pseudotumors of the Lacrimal Drainage System]. Laryngorhinootologie 2019; 98:806-811. [PMID: 31739355 DOI: 10.1055/a-0841-9713] [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: 10/25/2022]
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18
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Proksch E, Merker S, Müller-Röhr S, Neumann C, Masur C, Kilic A, Abels C. 237 Skin barrier integrity is enhanced after topical application of emulsions with an acidic pH. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.238] [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: 12/01/2022]
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19
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Proksch E, Merker S, Müller-Röhr S, Neumann C, Reich H, Masur C, Kilic A, Abels C. 316 Skin barrier function and integrity changes after topical application of emulsions with different pH. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Ankel C, Faridi A, Krause-Bergmann B, Neumann C, Paepke S, Mau C, Strittmatter HJ, Gerber-Schäfer C, Schnuppe K, Beier L, Bauer L, Blohmer JU. Patienten- und Operateurzufriedenheit in der Brustrekonstruktion mit Epiflex® – NOGGO-AWOGyn-Intergroupstudie. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671531] [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: 10/28/2022] Open
Affiliation(s)
- C Ankel
- Rotkreuzklinikum München, Frauenklinik, München, Deutschland
| | - A Faridi
- Universitätsklinikum Bonn, Senologie/Brustzentrum, Bonn, Deutschland
| | | | - C Neumann
- St. Franziskus Hospital, Brustzentrum, Münster, Deutschland
| | - S Paepke
- Klinikum rechts der Isar, TU München, Frauenklinik, München, Deutschland
| | - C Mau
- HELIOS Klinikum Berlin-Buch, Frauenheilkunde, Berlin, Deutschland
| | - HJ Strittmatter
- Rems-Murr-Klinikum Winnenden, Gynäkologie, Winnenden, Deutschland
| | | | - K Schnuppe
- NOGGO e.V., Studienabteilung, Berlin, Deutschland
| | - L Beier
- NOGGO e.V., Studienabteilung, Berlin, Deutschland
| | - L Bauer
- GRN Klinik Weinheim, Frauenklinik, Weinheim, Deutschland
| | - JU Blohmer
- Charité – Universitätsmedizin Berlin, Campus Mitte, Senologie/Brustzentrum, Berlin, Deutschland
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Wolf M, Boyer-Neumann C, Molho-Sabatier P, Neumann C, Meyer D, Larrieu MJ. Familial Variant of Antithrombin III (AT III Bligny, 47Arg to His) Associated with Protein C Deficiency. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1645197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThe association of a variant of antithrombin III (AT III Bligny) and protein C deficiency is described in a 36-year-old patient having suffered from severe thrombotic episodes. His mother has protein C deficiency and showed a single episode of thrombophlebitis following surgery. His father, sister and daughter have
the variant AT III and are asymptomatic. The abnormal AT III was characterized in plasma by the discrepancy between a normal progressive activity and a reduced heparin cofactor activity. This variant AT III was purified, separated from the normal protein by heparin-Sepharose chromatography and was eluted with increased NaCI concentrations. At pH 7.4, the variant AT III eluted at lower (0.3 to 0.5 M) NaCI concentrations than normal (1 to 1.5 M) AT III, thus demonstrating a decreased affinity for heparin. At pH 6.0, however, the abnormal molecule bound more avidly to heparin-Sepharose and was eluted like normal AT III at pH 7.4. Similarly, the heparin enhancement of intrinsic fluorescence of the variant AT III, markedly reduced at pH 7.4, was normalized at pH 6.0. The abnormal AT III showed a normal antiprotease activity, a normal molecular weight by SDS-PAGE, but displayed only a partial immunological identity with the normal protein. Analysis of amplified genomic DNA from this patient by dot-blot demonstrates a heterozygous substitution of arginine by histidine at position 47.
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Affiliation(s)
- M Wolf
- The Laboratoire d’Hématologie and INSERM U 143, Briis-sour-Forges, France
| | - C Boyer-Neumann
- The Laboratoire d’Hématologie and INSERM U 143, Briis-sour-Forges, France
| | - P Molho-Sabatier
- Hôpital de Bicêtre, Le Kremlin-Bicêtre, the Centre de Recherche Claude Bernard sur les maladies vasculaires périphériques, Briis-sous-Forges, France
| | - C Neumann
- Hopital Broussais, Paris, and the CMC de Bligny, Briis-sous-Forges, France
| | - D Meyer
- The Laboratoire d’Hématologie and INSERM U 143, Briis-sour-Forges, France
| | - M J Larrieu
- The Laboratoire d’Hématologie and INSERM U 143, Briis-sour-Forges, France
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22
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Proksch E, Soeberdt M, Neumann C, Reich H, Abels C. 670 Topically applied buffers of different pH and composition influence skin pH, barrier repair, epidermal differentiation, and inflammation. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sondenheimer K, Neumann C, Majora M, Rapp A, Greinert R, Boukamp P, Krutmann J. 1155 Analysis of the interaction of different wavelengths present in natural sunlight. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1169] [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: 12/01/2022]
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Abstract
The symptoms of Parkinson’s disease often begin on one side of the body and continue to do so as the disease progresses. First SPECT results in 4 patients with hemiparkinsonism using 99mTc-HMPAO as perfusion marker are reported. Three patients exhibited reduced tracer uptake in the contralateral basal ganglia One patient who was under therapy for 1 year, showed a different perfusion pattern with reduced uptake in both basal ganglia. These results might indicate reduced perfusion secondary to reduced striatal neuronal activity.
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van Wilderen LJGW, Neumann C, Rodrigues-Correia A, Kern-Michler D, Mielke N, Reinfelds M, Heckel A, Bredenbeck J. Picosecond activation of the DEACM photocage unravelled by VIS-pump-IR-probe spectroscopy. Phys Chem Chem Phys 2018; 19:6487-6496. [PMID: 28197598 DOI: 10.1039/c6cp07022a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The light-induced ultrafast uncaging process of the [7-(diethylamino)coumarin-4-yl]methyl (DEACM) cage is measured by time-resolved visible-pump-infrared-probe spectroscopy, and supported by steady-state absorption spectroscopy in the visible and infrared spectral regions. Understanding the uncaging process is important because its favorable properties make DEACM an interesting case for chemical and biological applications. It has a convenient absorption in the visible spectral range, and is relatively easily modified to carry leaving groups (LGs) such as nucleotides, substrates or inhibitors, which are inactive when bound and active when released. Previous work suggested a lower limit for the uncaging rate, which places it among the fastest available cages. Here, we determine the photodissociation directly to occur on the picosecond time scale by monitoring the appearance of the released LG in the infrared spectral region. In the present study, azide (N3) is chosen as an LG to monitor photodissociation because its vibrational mode is spectrally isolated (hence easy to follow) and its absorption wavenumber is sensitive to local structural rearrangements. The uncaging process is recorded up to 3 nanoseconds and compared to the collected steady-state spectra. The free LG appears on a picosecond time scale, rendering this one of the fastest known cages. No evidence is found for a tight-ion pair (TIP) preceding the free LG. The uncaging mechanism is found to be slowed down upon the addition of water to acetonitrile.
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Affiliation(s)
- L J G W van Wilderen
- Johann Wolfgang Goethe-University, Institute of Biophysics, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany.
| | - C Neumann
- Johann Wolfgang Goethe-University, Institute of Biophysics, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany.
| | - A Rodrigues-Correia
- Johann Wolfgang Goethe-University, Institute of Organic Chemistry and Chemical Biology, Max-von-Laue-Str. 7, Frankfurt am Main, 60438, Germany
| | - D Kern-Michler
- Johann Wolfgang Goethe-University, Institute of Biophysics, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany.
| | - N Mielke
- Johann Wolfgang Goethe-University, Institute of Biophysics, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany.
| | - M Reinfelds
- Johann Wolfgang Goethe-University, Institute of Organic Chemistry and Chemical Biology, Max-von-Laue-Str. 7, Frankfurt am Main, 60438, Germany
| | - A Heckel
- Johann Wolfgang Goethe-University, Institute of Organic Chemistry and Chemical Biology, Max-von-Laue-Str. 7, Frankfurt am Main, 60438, Germany
| | - J Bredenbeck
- Johann Wolfgang Goethe-University, Institute of Biophysics, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany.
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Steffens M, Becker B, Neumann C, Kasparbauer AM, Meyhöfer I, Weber B, Mehta MA, Hurlemann R, Ettinger U. Effects of ketamine on brain function during smooth pursuit eye movements. Hum Brain Mapp 2018; 37:4047-4060. [PMID: 27342447 DOI: 10.1002/hbm.23294] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/18/2016] [Accepted: 06/13/2016] [Indexed: 11/07/2022] Open
Abstract
The uncompetitive NMDA receptor antagonist ketamine has been proposed to model symptoms of psychosis. Smooth pursuit eye movements (SPEM) are an established biomarker of schizophrenia. SPEM performance has been shown to be impaired in the schizophrenia spectrum and during ketamine administration in healthy volunteers. However, the neural mechanisms mediating SPEM impairments during ketamine administration are unknown. In a counter-balanced, placebo-controlled, double-blind, within-subjects design, 27 healthy participants received intravenous racemic ketamine (100 ng/mL target plasma concentration) on one of two assessment days and placebo (intravenous saline) on the other. Participants performed a block-design SPEM task during functional magnetic resonance imaging (fMRI) at 3 Tesla field strength. Self-ratings of psychosis-like experiences were obtained using the Psychotomimetic States Inventory (PSI). Ketamine administration induced psychosis-like symptoms, during ketamine infusion, participants showed increased ratings on the PSI dimensions cognitive disorganization, delusional thinking, perceptual distortion and mania. Ketamine led to robust deficits in SPEM performance, which were accompanied by reduced blood oxygen level dependent (BOLD) signal in the SPEM network including primary visual cortex, area V5 and the right frontal eye field (FEF), compared to placebo. A measure of connectivity with V5 and FEF as seed regions, however, was not significantly affected by ketamine. These results are similar to the deviations found in schizophrenia patients. Our findings support the role of glutamate dysfunction in impaired smooth pursuit performance and the use of ketamine as a pharmacological model of psychosis, especially when combined with oculomotor biomarkers. Hum Brain Mapp 37:4047-4060, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- M Steffens
- Department of Psychology, University of Bonn, Bonn, Germany
| | - B Becker
- Department of Psychiatry and Division of Medical Psychology, University of Bonn, Bonn, Germany
| | - C Neumann
- Department of Anesthesiology, University of Bonn, Bonn, Germany
| | | | - I Meyhöfer
- Department of Psychology, University of Bonn, Bonn, Germany
| | - B Weber
- Center for Economics and Neuroscience, University of Bonn, Bonn, Germany.,Department of Epileptology, University Hospital Bonn, Bonn, Germany.,Department of NeuroCognition/Imaging, Life&Brain Research Center, Bonn, Germany
| | - M A Mehta
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - R Hurlemann
- Department of Psychiatry and Division of Medical Psychology, University of Bonn, Bonn, Germany
| | - U Ettinger
- Department of Psychology, University of Bonn, Bonn, Germany.
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27
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Kuglstatter A, Stihle M, Neumann C, Müller C, Schaefer W, Klein C, Benz J. Structural differences between glycosylated, disulfide-linked heterodimeric Knob-into-Hole Fc fragment and its homodimeric Knob-Knob and Hole-Hole side products. Protein Eng Des Sel 2017; 30:649-656. [PMID: 28985438 DOI: 10.1093/protein/gzx041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 05/16/2017] [Accepted: 07/17/2017] [Indexed: 11/12/2022] Open
Abstract
An increasing number of bispecific therapeutic antibodies are progressing through clinical development. The Knob-into-Hole (KiH) technology uses complementary mutations in the CH3 region of the antibody Fc fragment to achieve heavy chain heterodimerization. Here we describe the X-ray crystal structures of glycosylated and disulfide-engineered heterodimeric KiH Fc fragment and its homodimeric Knob-Knob and Hole-Hole side products. The heterodimer structure confirms the KiH design principle and supports the hypothesis that glycosylation stabilizes a closed Fc conformation. Both homodimer structures show parallel Fc fragment architectures, in contrast to recently reported crystal structures of the corresponding aglycosylated Fc fragments which in the absence of disulfide mutations show an unexpected antiparallel arrangement. The glycosylated Knob-Knob Fc fragment is destabilized as indicated by variability in the relative orientation of its CH3 domains. The glycosylated Hole-Hole Fc fragment shows an unexpected intermolecular disulfide bond via the introduced Y349C Hole mutation which results in a large CH3 domain shift and a new CH3-CH3 interface. The crystal structures of glycosylated, disulfide-linked KiH Fc fragment and its Knob-Knob and Hole-Hole side products reported here will facilitate further design of highly efficient antibody heterodimerization strategies.
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Affiliation(s)
- A Kuglstatter
- Therapeutic Modalities, Roche Innovation Center Basel, Grenzacherstrasse, 4070 Basel, Switzerland
| | - M Stihle
- Therapeutic Modalities, Roche Innovation Center Basel, Grenzacherstrasse, 4070 Basel, Switzerland
| | - C Neumann
- Therapeutic Modalities, Roche Innovation Center Zurich, Wagistrasse 18, 8962 Schlieren, Switzerland
| | - C Müller
- Therapeutic Modalities, Roche Innovation Center Zurich, Wagistrasse 18, 8962 Schlieren, Switzerland
| | - W Schaefer
- Therapeutic Modalities, Roche Innovation Center Penzberg, Nonnenwald 2, 82372 Penzberg, Germany
| | - C Klein
- Oncology Disease and Translational Area, Roche Innovation Center Zurich, Wagistrasse 18, 8952 Schlieren, Switzerland
| | - J Benz
- Therapeutic Modalities, Roche Innovation Center Basel, Grenzacherstrasse, 4070 Basel, Switzerland
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Evenson A, Neumann C, Glen M. A Pilot Study: The Impact of Mobile Application Use on Dietary Intake, Physical Activity, and Health Behavior Strategies Based on BMI. J Acad Nutr Diet 2017. [DOI: 10.1016/j.jand.2017.06.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Heichel J, Neumann C, Bethmann D, Siebolts U, Hammer T, Struck HG. [Dacryoliths and Iatrogenic Foreign Bodies as Classical Triggers for Inflammatory Pseudotumors of the Lacrimal Drainage System]. Klin Monbl Augenheilkd 2017; 235:898-904. [PMID: 28470654 DOI: 10.1055/s-0043-102591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Tumors of the lacrimal duct are rare. Inflammatory pseudotumors do not represent neoplasias as such. Chronic inflammation may lead to an angiomatous granulation tissue. PATIENTS The first case presents a 53-year-old male patient suffering a mass of the mediocaudal orbit after an acute dacryocystitis has been cured. Using diagnostic dacryoendoscopy, a large dacryolith was detected. Removing the concrement, via external dacryocystorhinostomy, a polypous tissue appeared which was resected as well. The second case concerns a 29-year-old female patient. She had a lacrimal surgery with stenting seven years prior to surgery. The patient's history revealed recurrent mucous secretion of the tear duct and tenderness of the lacrimal sac. An intrasaccal silicon foreign body could be confirmed by dacryoendoscopy. An external dacryocystorhinostomy was performed and the material was extracted. Hereby, an inflammatory tissue mass filling the whole efferent tear duct was removed. RESULTS In both patients, external dacryocystorhinostomy was performed complication-free. Surgery enabled the reconstruction of the nasolacrimal duct. Temporary autostable silicon intubation was inserted into the nasolacrimal duct (case 1 and 2), as well into osteotomy (case 2). Histologically, reactive granulation tissue was confirmed. During the follow-up of 9 months (patient 1) and 12 months (patient 2), patients were free of complaints. Lacrimal stentings were removed uneventfully and completely. CONCLUSIONS Dacryoliths and intrasaccal foreign bodies may cause a chronic dacryocystitis. Due to inflammation, reactive tissue proliferation can be initiated. In these cases, a hypertrophic granulation arose. Endogenous (dacryoliths) and exogenous (iatrogenic foreign bodies) triggers may be underlying reasons. Histological examination is essential for differentiating other inflammatory pathologies or tumors.
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Affiliation(s)
- J Heichel
- Universitätsklinik und Poliklinik für Augenheilkunde, Universitätsklinikum Halle (Saale)
| | - C Neumann
- Universitätsklinik und Poliklinik für Augenheilkunde, Universitätsklinikum Halle (Saale)
| | - D Bethmann
- Institut für Pathologie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale)
| | - U Siebolts
- Institut für Pathologie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale)
| | - T Hammer
- Universitätsklinik und Poliklinik für Augenheilkunde, Universitätsklinikum Halle (Saale)
| | - H-G Struck
- Universitätsklinik und Poliklinik für Augenheilkunde, Universitätsklinikum Halle (Saale)
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Burger P, Neumann C, Ropohl A, Paulsen F, Scholz M. Development of depression and deterioration in quality of life in German dental medical students in preclinical semesters. Ann Anat 2016; 208:183-186. [DOI: 10.1016/j.aanat.2016.05.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/20/2022]
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Neumann C. Traumatologische Indikationen für Röntgenaufnahmen. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581927] [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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32
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Kuzmin AV, Neumann C, van Wilderen LJGW, Shainyan BA, Bredenbeck J. Exploring photochemistry of p-bromophenylsulfonyl, p-tolylsulfonyl and methylsulfonyl azides by ultrafast UV-pump–IR-probe spectroscopy and computations. Phys Chem Chem Phys 2016; 18:8662-72. [DOI: 10.1039/c5cp07636f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The photochemistry of three sulfonylazides was studied by femtosecond time-resolved infrared (TRIR) spectroscopy and quantum chemical computations.
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Affiliation(s)
- A. V. Kuzmin
- Institute of Biophysics
- Johann Wolfgang Goethe-University
- 60438 Frankfurt
- Germany
- A. E. Favorsky Irkutsk Institute of Chemistry
| | - C. Neumann
- Institute of Biophysics
- Johann Wolfgang Goethe-University
- 60438 Frankfurt
- Germany
| | | | - B. A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Division of the Russian Academy of Science
- Irkutsk
- Russian Federation
| | - J. Bredenbeck
- Institute of Biophysics
- Johann Wolfgang Goethe-University
- 60438 Frankfurt
- Germany
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Schmuck RB, de Carvalho-Fischer CV, Neumann C, Pratschke J, Bahra M. Distal bile duct carcinomas and pancreatic ductal adenocarcinomas: postulating a common tumor entity. Cancer Med 2015; 5:88-99. [PMID: 26645826 PMCID: PMC4708893 DOI: 10.1002/cam4.566] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 04/02/2015] [Revised: 08/27/2015] [Accepted: 09/23/2015] [Indexed: 12/15/2022] Open
Abstract
The set definition of distal cholangiocarcinomas and adenocarcinomas of the pancreatic head is challenged by their close anatomical relation, similar growth pattern, and corresponding therapeutic outcome. They show a mutual development during embryologic organ formation and share phenotypic characteristics. This review will highlight the similarities with regard to the common origin of their primary organs, histopathological similarities, and modern clinical management. Thus, we propose to subsume those entities under a common superfamily.
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Affiliation(s)
- Rosa B Schmuck
- General, Visceral and Transplantation Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | | | - Christopher Neumann
- General, Visceral and Transplantation Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Johann Pratschke
- General, Visceral and Transplantation Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Marcus Bahra
- General, Visceral and Transplantation Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
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34
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Neumann C, Reichardt S, Venezuela P, Drögeler M, Banszerus L, Schmitz M, Watanabe K, Taniguchi T, Mauri F, Beschoten B, Rotkin SV, Stampfer C. Raman spectroscopy as probe of nanometre-scale strain variations in graphene. Nat Commun 2015; 6:8429. [PMID: 26416349 PMCID: PMC4598719 DOI: 10.1038/ncomms9429] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [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: 05/20/2015] [Accepted: 08/21/2015] [Indexed: 12/23/2022] Open
Abstract
Confocal Raman spectroscopy has emerged as a major, versatile workhorse for the non-invasive characterization of graphene. Although it is successfully used to determine the number of layers, the quality of edges, and the effects of strain, doping and disorder, the nature of the experimentally observed broadening of the most prominent Raman 2D line has remained unclear. Here we show that the observed 2D line width contains valuable information on strain variations in graphene on length scales far below the laser spot size, that is, on the nanometre-scale. This finding is highly relevant as it has been shown recently that such nanometre-scaled strain variations limit the carrier mobility in high-quality graphene devices. Consequently, the 2D line width is a good and easily accessible quantity for classifying the crystalline quality, nanometre-scale flatness as well as local electronic properties of graphene, all important for future scientific and industrial applications. Raman spectroscopy has become an invaluable tool for graphene characterisation, yet the nature of the broadening of the Raman 2D line remains unclear. Here, Stampfer et al. show that the Raman 2D line width is a measure of nanometre-scale strain variations in graphene on insulating substrates.
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Affiliation(s)
- C Neumann
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany.,Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, Jülich 52425, Germany
| | - S Reichardt
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany
| | - P Venezuela
- Instituto de Fsica, Universidade Federal Fluminense, Niterói, 24210-346 Rio de Janeiro, Brazil
| | - M Drögeler
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany
| | - L Banszerus
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany
| | - M Schmitz
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany
| | - K Watanabe
- National Institute for Materials Science,1-1 Namiki, Tsukuba 305-0044, Japan
| | - T Taniguchi
- National Institute for Materials Science,1-1 Namiki, Tsukuba 305-0044, Japan
| | - F Mauri
- IMPMC, UMR CNRS 7590, Sorbonne Universités-UPMC Univ. Paris 06, MNHN, IRD, 4 Place Jussieu, Paris 75005, France
| | - B Beschoten
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany
| | - S V Rotkin
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany.,Department of Physics and Center for Advanced Materials and Nanotechnology, Lehigh University, Bethlehem, Pennsylvania 18015, USA
| | - C Stampfer
- JARA-FIT and 2nd Institute of Physics, RWTH Aachen University, Aachen 52074, Germany.,Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, Jülich 52425, Germany
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Abstract
Intraoperative assessment of the femoral axis, length and torsion can be difficult. A postoperative torsional discrepancy is a common but rarely diagnosed condition. A clinical evaluation of femoral torsion is limited, especially in the early postoperative period. Conventional radiographs are a reliable diagnostic tool for evaluation of discrepancies of leg length and axis. Computed tomography remains the gold standard for assessment of torsional discrepancies. Because of the wide variability of the physiological femoral torsion, the clinical impact of a torsional discrepancy in individual cases remains unclear. There is a general recommendation for revision in cases of intraindividual deviations of more than 15°; however, most patients with deviations even greater than 15° are asymptomatic. Therefore, the indications for correction should be carefully considered in each individual case. The patient level of activity is a crucial point in decision-making for correction osteotomy. Before correction osteotomy, the surgeon has to make a detailed biomechanical analysis of the leg. Early correction is recommended in most cases. Detailed knowledge of the patient medical history is needed for preoperative planning. Prior surgeries can have a significant impact on the choice of the surgical approach and stabilization technique.
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Affiliation(s)
- F Baumann
- Klinik und Poliklinik für Unfallchirurgie, Universitätsklinikum Regensburg, 93042, Regensburg, Deutschland.
| | - K Angerpointner
- Klinik und Poliklinik für Unfallchirurgie, Universitätsklinikum Regensburg, 93042, Regensburg, Deutschland
| | - M Nerlich
- Klinik und Poliklinik für Unfallchirurgie, Universitätsklinikum Regensburg, 93042, Regensburg, Deutschland
| | - C Neumann
- Klinik und Poliklinik für Unfallchirurgie, Universitätsklinikum Regensburg, 93042, Regensburg, Deutschland
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Rau M, Seidel E, Neumann C. Funktionsuntersuchungen der Wirbelsäule beim Klavierspiel. Manuelle Medizin 2015. [DOI: 10.1007/s00337-014-1180-7] [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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Baumann F, Krutsch W, Pfeifer C, Neumann C, Nerlich M, Loibl M. Posterolateral fusion in acute traumatic thoracolumbar fractures: a comparison of demineralized bone matrix and autologous bone graft. Acta Chir Orthop Traumatol Cech 2015; 82:119-125. [PMID: 26317180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
UNLABELLED INTRODUCTION Alternative fusion expanders are in clinical use for instrumented posterolateral fusion (PLF) to avoid donor site morbidity in autologous bone graft (ABG) harvesting. Purpose of this study was to evaluate demineralized bone matrix (DBM) in PLF as alternative to the gold standard of ABG in acute traumatic vertebral body fractures of the thoracolumbar spine. MATERIAL AND METHODS We retrospectively identified 101 patients with acute traumatic vertebral body fractures of the thoracic and lumbar spine who were treated with instrumented PLF in our level one trauma center between 2005 and 2011. Patients with a primary paraplegia, osteodepriving disease or loss to follow-up had been excluded. Until August 2008, autologous bone graft harvested from the posterior iliac crest was used in PLF (control group n = 46). Starting September 2008, DBM was used as fusion expander in PLF (study group n = 16). Clinical and radiological evaluation was performed with a minimum followup of 18 months to assess the clinical and radiological outcome. RESULTS We found a fusion rate of 94% in patients undergoing PLF with the use of DBM and 100% with the use of ABG. There was one major complication of deep infection in the DBM group and two cases of superficial wound infection in the ABG group. We discovered a trend of reduced operating time with the use of DBM. CONCLUSIONS DBM leads to a similar fusion rate as the use of ABG in patients undergoing PLF for acute traumatic vertebral body fractures of the thoracic and lumbar spine. DBM is associated with reduced operating time. LEVEL OF EVIDENCE III case-control study Key words: demineralized bone matrix instrumented posterolateral fusion, acute traumatic vertebral body fracture, thoracolumbar spine, autologous bone graft.
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Affiliation(s)
- F Baumann
- Department of Trauma Surgery, Regensburg University Medical Center, Regensburg, Germany
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Gaunt AC, Neumann C, Phillips JS, Swan I. BAHA surgery in England--variation in service provision for adults across Strategic Health Authority regions revealed by the Hospital Episode Statistics database. Clin Otolaryngol 2014; 40:159-62. [PMID: 25516165 DOI: 10.1111/coa.12356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A C Gaunt
- Otolaryngology, Norfolk & Norwich University Hospital, Norwich, UK
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Bigliardi PL, Neumann C, Teo YL, Pant A, Bigliardi-Qi M. Activation of the δ-opioid receptor promotes cutaneous wound healing by affecting keratinocyte intercellular adhesion and migration. Br J Pharmacol 2014; 172:501-14. [PMID: 24628261 PMCID: PMC4292964 DOI: 10.1111/bph.12687] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [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: 10/16/2013] [Revised: 02/28/2014] [Accepted: 03/06/2014] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND AND PURPOSE In addition to its analgesic functions, the peripheral opioid receptor system affects skin homeostasis by influencing cell differentiation, migration and adhesion; also, wound healing is altered in δ-opioid receptor knockout mice (DOPr–/–). Hence, we investigated δ-opioid receptor effects on the expression of several proteins of the desmosomal junction complex and on the migratory behaviour of keratinocytes. EXPERIMENTAL APPROACH Expression levels of desmosomal cadherins in wild-type and DOPr–/– mice, and the morphology of intercellular adhesion in human keratinocytes were analysed by immunofluorescence. To investigate the δ-opioid receptor activation pathway, protein expression was studied using Western blot and its effect on cellular migration determined by in vitro live cell migration recordings from human keratinocytes. KEY RESULTS Expression of the desmosomal cadherins, desmogleins 1 and 4, was up-regulated in skin from DOPr–/– mice, and down-regulated in δ-opioid receptor-overexpressing human keratinocytes. The localization of desmoplakin expression was rearranged from linear arrays emanating from cell borders to puncta in cell periphery, resulting in less stable intercellular adhesion. Migration and wound recovery were enhanced in human keratinocyte monolayers overexpressing δ-opioid receptors in vitro. These δ-opioid receptor effects were antagonized by specific PKCα/β inhibition indicating they were mediated through the PKC signalling pathway. Finally, cells overexpressing δ-opioid receptors developed characteristically long but undirected protrusions containing filamentous actin and δ-opioid receptors, indicating an enhanced migratory phenotype. CONCLUSION AND IMPLICATIONS Opioid receptors affect intercellular adhesion and wound healing mechanisms, underlining the importance of a cutaneous neuroendocrine system in wound healing and skin homeostasis. LINKED ARTICLES This article is part of a themed section on Opioids: New Pathways to Functional Selectivity. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2015.172.issue-2
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Affiliation(s)
- P L Bigliardi
- Institute of Medical Biology, Agency for Science Technology & Research (A*STAR), Singapore; Division of Rheumatology, National University Hospital, University Medicine Cluster, Singapore
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Witt M, Müller F, Leipe J, Proft F, Neumann C, Schulze-Koops H, Grunke M. SAT0201 The Relevance of Flexor Tendon Tenosynovitis to Small Joint Tenderness and Swelling: Data from A Prospective Early RA Cohort. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3795] [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: 11/03/2022]
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Loibl M, Stoyanov L, Doenitz C, Brawanski A, Wiggermann P, Krutsch W, Nerlich M, Oszwald M, Neumann C, Salzberger B, Hanses F. Outcome-related co-factors in 105 cases of vertebral osteomyelitis in a tertiary care hospital. Infection 2014; 42:503-10. [DOI: 10.1007/s15010-013-0582-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 12/26/2013] [Indexed: 12/15/2022]
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Abstract
We discuss graphene nanoribbon-based charge sensors and focus on their functionality in the presence of external magnetic fields and high frequency pulses applied to a nearby gate electrode. The charge detectors work well with in-plane magnetic fields of up to 7 T and pulse frequencies of up to 20 MHz. By analyzing the step height in the charge detector's current at individual charging events in a nearby quantum dot, we determine the ideal operation conditions with respect to the applied charge detector bias. Average charge sensitivities of 1.3 × 10(-3)e Hz(-1/2) can be achieved. Additionally, we investigate the back action of the charge detector current on the quantum transport through a nearby quantum dot. By varying the charge detector bias from 0 to 4.5 mV, we can increase the Coulomb peak currents measured at the quantum dot by a factor of around 400. Furthermore, we can completely lift the Coulomb blockade in the quantum dot.
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Affiliation(s)
- C Neumann
- JARA-FIT and II Institute of Physics B, RWTH Aachen University, D-52074 Aachen, Germany. Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany
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Lorz C, Neumann C, Bakker F, Pietzsch K, Weiß H, Makeschin F. A Web-based planning support tool for sediment management in a meso-scale river basin in Western Central Brazil. J Environ Manage 2013; 127 Suppl:S15-S23. [PMID: 23254313 DOI: 10.1016/j.jenvman.2012.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 10/31/2012] [Accepted: 11/01/2012] [Indexed: 06/01/2023]
Abstract
In scope of an IWRM concept for the Federal District, Western Central Brazil we developed a planning support tool, which enables non-experts to test the effects of land-use and land-cover change (LULCC) on landscape processes and landscape functions (LPF) related to sediment generation and retention. For this purpose we developed the web-based tool Letsmap do Brasil. The tool has two principal layers. The upper layer contains information on land use and its effect on LPF, i.e. sediment retention, runoff control, nitrogen loss control and agronomic value. The parameterized relation between land use and LPF is the core of the whole system. For each LPF a value specific to land use has been assigned. A second layer contains information on landscape properties and potentials (LPP), e.g. potential for sediment input in river networks and runoff potential. By linking land use and LPPs the system provides a spatially explicit assessment of effects of LULCC on landscape processes and functions (LPF). Letsmap do Brasil might have two major purposes. (1) It will support decision-making in river basin management and sediment management. By creating their own land-use/cover pattern non-expert users are enabled to test effects of LULCC on LPFs. (2) It will support and train non-experts to participate in decision processes in land-use planning. Because of its high adaptability, transparency, and simple handling Letsmap do Brasil might be used as tool in river basin management and land-use planning.
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Affiliation(s)
- C Lorz
- Hochschule Weihenstephan-Triesdorf, University of Applied Sciences, Freising, Germany.
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Neumann C, Scheffold A. [Therapeutic manipulation of inflammation-promoting T cells: from suppression to self-control]. Z Rheumatol 2013; 72:683-4, 686. [PMID: 23949278 DOI: 10.1007/s00393-012-1123-4] [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: 11/28/2022]
Affiliation(s)
- C Neumann
- Medizinische Klinik mit Schwerpunkt Rheumatologie und klinische Immunologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
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Neumann C, Proft F, Hammitzsch A, Gruenke M, Schulze-Koops H. THU0515 Hypogammaglobulinemia is a Frequent Finding in Patients Under Immunosuppressive Therapy but Does not Correlate with Susceptibility to Infections. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Neumann C, Dorffner R. [Conversion of a retrograde access to an antegrade access for bilateral femorocrural intervention in one session]. ROFO-FORTSCHR RONTG 2012; 184:450-4. [PMID: 22549552 DOI: 10.1055/s-0031-1299096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE Evaluation of the feasibility as well as the success and complication rates of a change of access direction in patients with PAOD for bilateral intervention. MATERIALS AND METHODS Over the course of one year, 239 patients referred to our department for intervention of the iliac and femorocrural vessels were evaluated for an ipsilateral change of access direction. In 38 patients (16%), the symptoms indicated a bilateral femorocrural intervention. Three patients (8%) had to be excluded due to elevated creatinine level. In the remaining 35 patients, an attempt was made to change the cross-over access to an antegrade access in the same session. The procedure was accomplished by drawing a sidewinder catheter in the ipsilateral CIA, pushing a hydrophilic guide wire into the SFA and repositioning the sheath. Sonographic and clinical controls followed the next day. RESULTS In 32 patients (91%), the procedure was successful, and in 3 cases (9%), it failed. One major hematoma (3%), which could be treated conservatively, occurred. In 2 cases (6%) pseudoaneurysms developed and were treated by compression or thrombin injection. 3 minor hematomas (9%) were documented. In one patient (3%) a stroke occurred during the intervention after a brain stem infarction some weeks before, which could not be related to the intervention (total rate of minor complications 9%, major complications 12%). CONCLUSION The bilateral intervention of femorocrural vessels in one session by changing the access direction ipsilaterally is feasible and associated with acceptable complication rates. It offers the opportunity to optimize endovascular therapy economically.
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Affiliation(s)
- C Neumann
- Institut für Diagnostische und Interventionelle Radiologie, Wilhelminenspital, Wien, Austria.
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Neumann C, Tsioulos K, Merkonidis C, Salam M, Clark A, Philpott C. Validation study of the “Sniffin’ Sticks” olfactory test in a British population: a preliminary communication. Clin Otolaryngol 2012; 37:23-7. [PMID: 22433135 DOI: 10.1111/j.1749-4486.2012.02431.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C Neumann
- James Paget University Hospitals NHS Foundation Trust, Norfolk, UK.
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Neumann C, Teschler H, Freitag L, Darwiche K, Karpf-Wissel R, Theegarten D, Schmid KD. Klinische Evaluation der EBUS gesteuerten Punktion mediastinal und hilär vergrößerter Lymphknoten mittels der Lymphknotenbiopsiezange. Pneumologie 2012. [DOI: 10.1055/s-0032-1302805] [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: 10/28/2022]
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