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Schmid N, Brandt D, Walasek C, Rolland C, Wittmann J, Fischer D, Müsken M, Kalinowski J, Thormann K. An autonomous plasmid as an inovirus phage satellite. Appl Environ Microbiol 2024:e0024624. [PMID: 38597658 DOI: 10.1128/aem.00246-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/20/2024] [Indexed: 04/11/2024] Open
Abstract
Bacterial viruses (phages) are potent agents of lateral gene transfer and thus are important drivers of evolution. A group of mobile genetic elements, referred to as phage satellites, exploits phages to disseminate their own genetic material. Here, we isolated a novel member of the family Inoviridae, Shewanella phage Dolos, along with an autonomously replicating plasmid, pDolos. Dolos causes a chronic infection in its host Shewanella oneidensis by phage production with only minor effects on the host cell proliferation. When present, plasmid pDolos hijacks Dolos functions to be predominantly packaged into phage virions and released into the environment and, thus, acts as a phage satellite. pDolos can disseminate further genetic material encoding, e.g., resistances or fluorophores to host cells sensitive to Dolos infection. Given the rather simple requirements of a plasmid for takeover of an inovirus and the wide distribution of phages of this group, we speculate that similar phage-satellite systems are common among bacteria.IMPORTANCEPhage satellites are mobile genetic elements, which hijack phages to be transferred to other host cells. The vast majority of these phage satellites integrate within the host's chromosome, and they all carry remaining phage genes. Here, we identified a novel phage satellite, pDolos, which uses an inovirus for dissemination. pDolos (i) remains as an autonomously replicating plasmid within its host, (ii) does not carry recognizable phage genes, and (iii) is smaller than any other phage satellites identified so far. Thus, pDolos is the first member of a new class of phage satellites, which resemble natural versions of phagemids.
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Affiliation(s)
- Nicole Schmid
- Institute for Microbiology and Molecular Biology, Justus-Liebig-Universität Gießen, Gießen, Germany
| | - David Brandt
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Claudia Walasek
- Institute for Microbiology and Molecular Biology, Justus-Liebig-Universität Gießen, Gießen, Germany
| | - Clara Rolland
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany
| | - Johannes Wittmann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany
| | - Dorian Fischer
- Institute for Microbiology and Molecular Biology, Justus-Liebig-Universität Gießen, Gießen, Germany
| | - Mathias Müsken
- Central Facility for Microscopy, Helmholtz Centre for Infection Research GmbH, Braunschweig, Germany
| | - Jörn Kalinowski
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Kai Thormann
- Institute for Microbiology and Molecular Biology, Justus-Liebig-Universität Gießen, Gießen, Germany
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2
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Neumann E, Ballmer L, Studhalter O, Schmid N, Jung HH. Dementia During the COVID-19 Pandemic: Experiences From Clinicians, Patients, and Caregivers in Switzerland. Gerontol Geriatr Med 2023; 9:23337214231164911. [PMID: 37013164 PMCID: PMC10064187 DOI: 10.1177/23337214231164911] [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: 01/04/2023] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 04/03/2023] Open
Abstract
Background: The COVID-19 pandemic had a significant impact on the Swiss health care system, affecting especially vulnerable people, such as patients suffering from dementia. The purpose of this study was to investigate the challenges experienced by dementia patients, their carers, and clinicians during the pandemic in Switzerland. Methods: An online survey was sent to all memory clinics in the German speaking part of Switzerland. Patients diagnosed with dementia and their carers were recruited for semi-structured telephone interviews at the memory clinic of the University Hospital Zurich. Results: A total of 28 clinicians, 17 carers, and seven patients participated in this study. According to the clinicians, all aspects of clinical work were affected by the pandemic. Carers did not perceive a significant role of the pandemic in the disease progression of the patients, despite many challenges faced. Patients described a high level of conscientiousness during the pandemic. Recommendations for future scenarios were provided from all groups. Conclusion: In order to increase the systemic resilience of the Swiss health care system, it is important to consider the experiences and recommendations of vulnerable groups and health care professionals for future public health measures and policies.
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Affiliation(s)
- Eileen Neumann
- University Hospital Zurich, Switzerland
- University of Zurich, Switzerland
- Eileen Neumann, Department of Neurology, University Hospital Zurich, Frauenklinikstrasse 26, Zurich 8091, Switzerland.
| | | | | | | | - Hans H. Jung
- University Hospital Zurich, Switzerland
- University of Zurich, Switzerland
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3
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Schmid N, Bruderer S, Paruzzo F, Fischetti G, Toscano G, Graf D, Fey M, Henrici A, Ziebart V, Heitmann B, Grabner H, Wegner JD, Sigel RKO, Wilhelm D. Deconvolution of 1D NMR spectra: A deep learning-based approach. J Magn Reson 2023; 347:107357. [PMID: 36563418 DOI: 10.1016/j.jmr.2022.107357] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/01/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
The analysis of nuclear magnetic resonance (NMR) spectra to detect peaks and characterize their parameters, often referred to as deconvolution, is a crucial step in the quantification, elucidation, and verification of the structure of molecular systems. However, deconvolution of 1D NMR spectra is a challenge for both experts and machines. We propose a robust, expert-level quality deep learning-based deconvolution algorithm for 1D experimental NMR spectra. The algorithm is based on a neural network trained on synthetic spectra. Our customized pre-processing and labeling of the synthetic spectra enable the estimation of critical peak parameters. Furthermore, the neural network model transfers well to the experimental spectra and demonstrates low fitting errors and sparse peak lists in challenging scenarios such as crowded, high dynamic range, shoulder peak regions as well as broad peaks. We demonstrate in challenging spectra that the proposed algorithm is superior to expert results.
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Affiliation(s)
- N Schmid
- Zurich University of Applied Sciences (ZHAW), Switzerland; University of Zurich (UZH), Switzerland.
| | | | | | | | | | - D Graf
- Bruker Switzerland AG, Switzerland
| | - M Fey
- Bruker Switzerland AG, Switzerland
| | - A Henrici
- Zurich University of Applied Sciences (ZHAW), Switzerland
| | - V Ziebart
- Zurich University of Applied Sciences (ZHAW), Switzerland
| | | | - H Grabner
- Zurich University of Applied Sciences (ZHAW), Switzerland
| | | | | | - D Wilhelm
- Zurich University of Applied Sciences (ZHAW), Switzerland
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Fritz P, Kleinhans A, Raoufi R, Sediqi A, Schmid N, Schricker S, Schanz M, Fritz-Kuisle C, Dalquen P, Firooz H, Stauch G, Alscher MD. Evaluation of medical decision support systems (DDX generators) using real medical cases of varying complexity and origin. BMC Med Inform Decis Mak 2022; 22:254. [PMID: 36153527 PMCID: PMC9509605 DOI: 10.1186/s12911-022-01988-2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 08/29/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Medical decision support systems (CDSSs) are increasingly used in medicine, but their utility in daily medical practice is difficult to evaluate. One variant of CDSS is a generator of differential diagnoses (DDx generator). We performed a feasibility study on three different, publicly available data sets of medical cases in order to identify the frequency in which two different DDx generators provide helpful information (either by providing a list of differential diagnosis or recognizing the expert diagnosis if available) for a given case report.
Methods
Used data sets were n = 105 cases from a web-based forum of telemedicine with real life cases from Afghanistan (Afghan data set; AD), n = 124 cases discussed in a web-based medical forum (Coliquio data set; CD). Both websites are restricted for medical professionals only. The third data set consisted 50 special case reports published in the New England Journal of Medicine (NEJM). After keyword extraction, data were entered into two different DDx generators (IsabelHealth (IH), Memem7 (M7)) to examine differences in target diagnosis recognition and physician-rated usefulness between DDx generators.
Results
Both DDx generators detected the target diagnosis equally successfully (all cases: M7, 83/170 (49%); IH 90/170 (53%), NEJM: M7, 28/50 (56%); IH, 34/50 (68%); differences n.s.). Differences occurred in AD, where detection of an expert diagnosis was less successful with IH than with M7 (29.7% vs. 54.1%, p = 0.003). In contrast, in CD IH performed significantly better than M7 (73.9% vs. 32.6%, p = 0.021). Congruent identification of target diagnosis occurred in only 46/170 (27.1%) of cases. However, a qualitative analysis of the DDx results revealed useful complements from using the two systems in parallel.
Conclusion
Both DDx systems IsabelHealth and Memem7 provided substantial help in finding a helpful list of differential diagnoses or identifying the target diagnosis either in standard cases or complicated and rare cases. Our pilot study highlights the need for different levels of complexity and types of real-world medical test cases, as there are significant differences between DDx generators away from traditional case reports. Combining different results from DDx generators seems to be a possible approach for future review and use of the systems.
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Wasser C, Schmid N, Müller M, Günther M, Beller C, Rudolph B. [Management of critically ill nontrauma patients in a nonuniversity emergency department]. Notf Rett Med 2022:1-11. [PMID: 35502426 PMCID: PMC9045234 DOI: 10.1007/s10049-022-01027-7] [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] [Accepted: 03/21/2022] [Indexed: 11/09/2022]
Abstract
Purpose Today there exists only limited knowledge regarding the care of critically ill nontrauma (CINT) patients in the resuscitation room (RR) in Germany. The goal of this observational study was to describe the management of CINT patients in the RR of a nonuniversity emergency department. Methods Data of adult nontrauma patients in the RR were prospectively collected in this study from 26 January 2019 to 18 May 2021 using the OBSERvE‑2 evaluation protocol. Results In all, 213 patients were included in the study (age: 70 ± 15 years, 55% male; admission to the RR by emergency medical service 93%). 28% were brought in after out-of-hospital cardiac arrest. Leading admission causes were C (47%) and B problems (39%). Diagnoses at the end of RR treatment were 30% pulmonary and 26% cardiovascular diseases without myocardial infarction as well as pulmonary embolism (8% and 5%, respectively). Measures performed were airway protection (20%), invasive (46%) and noninvasive ventilation (25%), cardiopulmonary resuscitation (13%), catecholamine therapy (34%), emergency ultrasound (62%). The initial treatment lasted for 41 ± 22 min. Computed tomography was subsequently performed in 51%. On average 4-5 persons were involved in the treatment during the RR period. In total, 9% of the patients died during RR treatment and 40% in the hospital. Conclusion Patients in a nonuniversity nontrauma RR are resource-intensive and have a high in-hospital lethality. RR care can be completed within 60 min. In order to achieve better comparability between patient populations of different locations, it is necessary to uniformly define admission criteria for the nontrauma resuscitation room.
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Affiliation(s)
- C. Wasser
- Notaufnahmezentrum, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Deutschland
| | - N. Schmid
- AG IT-Forschung, Robert-Bosch-Krankenhaus, Stuttgart, Deutschland
| | - M. Müller
- Notaufnahmezentrum, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Deutschland
| | - M. Günther
- Notaufnahmezentrum, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Deutschland
| | - C. Beller
- Notaufnahmezentrum, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Deutschland
| | - B. Rudolph
- Notaufnahmezentrum, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Deutschland
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Denecke K, Schmid N, Nüssli S. Implementation of Cognitive Behavioral Therapy in e-Mental Health Apps: Literature Review. J Med Internet Res 2022; 24:e27791. [PMID: 35266875 PMCID: PMC8949700 DOI: 10.2196/27791] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 07/27/2021] [Accepted: 12/28/2021] [Indexed: 12/24/2022] Open
Abstract
Background To address the matter of limited resources for treating individuals with mental disorders, e–mental health has gained interest in recent years. More specifically, mobile health (mHealth) apps have been suggested as electronic mental health interventions accompanied by cognitive behavioral therapy (CBT). Objective This study aims to identify the therapeutic aspects of CBT that have been implemented in existing mHealth apps and the technologies used. From these, we aim to derive research gaps that should be addressed in the future. Methods Three databases were screened for studies on mHealth apps in the context of mental disorders that implement techniques of CBT: PubMed, IEEE Xplore, and ACM Digital Library. The studies were independently selected by 2 reviewers, who then extracted data from the included studies. Data on CBT techniques and their technical implementation in mHealth apps were synthesized narratively. Results Of the 530 retrieved citations, 34 (6.4%) studies were included in this review. mHealth apps for CBT exploit two groups of technologies: technologies that implement CBT techniques for cognitive restructuring, behavioral activation, and problem solving (exposure is not yet realized in mHealth apps) and technologies that aim to increase user experience, adherence, and engagement. The synergy of these technologies enables patients to self-manage and self-monitor their mental state and access relevant information on their mental illness, which helps them cope with mental health problems and allows self-treatment. Conclusions There are CBT techniques that can be implemented in mHealth apps. Additional research is needed on the efficacy of the mHealth interventions and their side effects, including inequalities because of the digital divide, addictive internet behavior, lack of trust in mHealth, anonymity issues, risks and biases for user groups and social contexts, and ethical implications. Further research is also required to integrate and test psychological theories to improve the impact of mHealth and adherence to the e–mental health interventions.
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Affiliation(s)
- Kerstin Denecke
- Institute for Medical Informatics, Bern University of Applied Sciences, Biel, Switzerland
| | | | - Stephan Nüssli
- Institute for Medical Informatics, Bern University of Applied Sciences, Biel, Switzerland
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7
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Gottschalk J, Michel E, Thöle LM, Studer AS, Hasenfratz AP, Schmid N, Butzin M, Mazaud A, Martínez-García A, Szidat S, Jaccard SL. Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release. Nat Commun 2020; 11:6192. [PMID: 33273459 PMCID: PMC7712879 DOI: 10.1038/s41467-020-20034-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 11/05/2020] [Indexed: 11/24/2022] Open
Abstract
Past changes in ocean 14C disequilibria have been suggested to reflect the Southern Ocean control on global exogenic carbon cycling. Yet, the volumetric extent of the glacial carbon pool and the deglacial mechanisms contributing to release remineralized carbon, particularly from regions with enhanced mixing today, remain insufficiently constrained. Here, we reconstruct the deglacial ventilation history of the South Indian upwelling hotspot near Kerguelen Island, using high-resolution 14C-dating of smaller-than-conventional foraminiferal samples and multi-proxy deep-ocean oxygen estimates. We find marked regional differences in Southern Ocean overturning with distinct South Indian fingerprints on (early de-)glacial atmospheric CO2 change. The dissipation of this heterogeneity commenced 14.6 kyr ago, signaling the onset of modern-like, strong South Indian Ocean upwelling, likely promoted by rejuvenated Atlantic overturning. Our findings highlight the South Indian Ocean’s capacity to influence atmospheric CO2 levels and amplify the impacts of inter-hemispheric climate variability on global carbon cycling within centuries and millennia. A Southern Ocean influences on the carbon cycle is considered a key component of deglacial changes. Here, the authors show spatial differences in glacial Southern Ocean carbon storage that dissipated rapidly 14.6 kyr ago, revealing a South Indian Ocean contribution to rapid deglacial atmospheric CO2 increases.
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Affiliation(s)
- Julia Gottschalk
- Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland. .,Lamont-Doherty Earth Observatory, Columbia University of the City of New York, Palisades, NY, USA.
| | - Elisabeth Michel
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CNRS-CEA-UVSQ, Université de Paris-Saclay, Gif-sur-Yvette, France
| | - Lena M Thöle
- Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland.,Department of Earth Sciences, Marine Palynology and Paleoceanography, Utrecht University, Utrecht, Netherlands
| | - Anja S Studer
- Max Planck Institute for Chemistry, Climate Geochemistry Department, Mainz, Germany.,Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | - Adam P Hasenfratz
- Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland.,Geological Institute, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland
| | - Nicole Schmid
- Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
| | - Martin Butzin
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung, Bremerhaven, Germany
| | - Alain Mazaud
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CNRS-CEA-UVSQ, Université de Paris-Saclay, Gif-sur-Yvette, France
| | | | - Sönke Szidat
- Department of Chemistry and Biochemistry and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Samuel L Jaccard
- Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland.,Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
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Gascho D, Hetzel U, Schmid N, Martinez RM, Thali MJ, Richter H. Virtopsy of a gravid Boa constrictor using computed tomography and magnetic resonance imaging. Vet Anim Sci 2020; 10:100150. [PMID: 33089008 PMCID: PMC7566950 DOI: 10.1016/j.vas.2020.100150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 05/29/2020] [Accepted: 10/01/2020] [Indexed: 11/18/2022] Open
Abstract
This article presents radiologic examinations of a deeply sedated Boa constrictor with boid inclusion body disease (BIBD) as an adjunction to the subsequent necropsy. This method is known as virtopsy. The Boa constrictor in the present case was gravid. Computed tomography (CT) allowed for the detailed depiction of a fetal skeleton at the rear end of the adult snake. Furthermore, tiny gas formation was detected inside the cranium of the fetus, which was deemed a radiologic sign for decomposition. Magnetic resonance imaging (MRI) delineated the soft tissue at high resolution. This article illustrates the use of CT and MRI for the examination of a gravid Boa constrictor before necropsy and demonstrates the detection of "normal" postmortem findings leading to the confirmation of fetal death in situ.
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Key Words
- BIBD, boid inclusion body disease
- Boa constrictor
- CT, computed tomography
- Computed tomography
- IHC, immunohistochemical
- MRI, Magnetic resonance imaging
- Magnetic resonance imaging
- Postmortem imaging
- RAVs, reptarenaviruses
- TE, echo time
- TR, repitition time
- Virtopsy
- Virtual necropsy
- kVp, kilovoltage peak
- mAs, milliampere seconds
- ms, milliseconds
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Affiliation(s)
- Dominic Gascho
- Institute of Forensic Medicine and Imaging, University of Zurich, Switzerland
- Corresponding author: Dominic Gascho, Department of Forensic Medicine and Imaging, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, CH-8057 Zurich, Switzerland, Telephone number: +41 44 635 5611, Fax number: +41 44 635 6851
| | - Udo Hetzel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Nicole Schmid
- Clinic for Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Rosa M Martinez
- Institute of Forensic Medicine and Imaging, University of Zurich, Switzerland
| | - Michael J Thali
- Institute of Forensic Medicine and Imaging, University of Zurich, Switzerland
| | - Henning Richter
- Diagnostic Imaging Research Unit (DIRU), Clinic for Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Switzerland
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Stienen MN, Fung C, Bijlenga P, Zumofen DW, Maduri R, Robert T, Seule MA, Marbacher S, Geisseler O, Brugger P, Gutbrod K, Chicherio C, Monsch AU, Beaud V, Rossi S, Früh S, Schmid N, Smoll NR, Keller E, Regli L. Measuring the Impact of Delayed Cerebral Ischemia on Neuropsychological Outcome After Aneurysmal Subarachnoid Hemorrhage-Protocol of a Swiss Nationwide Observational Study (MoCA-DCI Study). Neurosurgery 2020; 84:1124-1132. [PMID: 29762759 DOI: 10.1093/neuros/nyy155] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 03/27/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The exact relationship between delayed cerebral ischemia (DCI) following aneurysmal subarachnoid hemorrhage (aSAH) and neuropsychological impairment remains unknown, as previous studies lacked a baseline examination after aneurysm occlusion but before the DCI-period. Neuropsychological evaluation of acutely ill patients is often applied in a busy intensive care unit (ICU), where distraction represents a bias to the obtained results. OBJECTIVE To evaluate the relationship between DCI and neuropsychological outcome after aSAH by comparing the Montreal Cognitive Assessment (MoCA) results in aSAH patients with and without DCI at 3 mo with a baseline examination before the DCI-period (part 1). To determine the reliability of the MoCA, when applied in an ICU setting (part 2). METHODS Prospective, multicenter, and observational study performed at all Swiss neurovascular centers. For part 1, n = 240 consecutive aSAH patients and for part 2, n = 50 patients with acute brain injury are recruited. EXPECTED OUTCOMES Part 1: Effect size of the relationship between DCI and neuropsychological outcome (MoCA). Part 2: Reliability measures for the MoCA. DISCUSSION The institutional review boards approved this study on July 4, 2017 under case number BASEC 2017-00103. After completion, the results will be offered to an international scientific journal for peer-reviewed publication. This study determines the exact impact of DCI on the neuropsychological outcome after aSAH, unbiased by confounding factors such as early brain injury or patient-specific characteristics. The study provides unique insights in the neuropsychological state of patients in the early period after aSAH.
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Affiliation(s)
- Martin N Stienen
- Department of Neurosurgery, University Hospital Zurich, Clinical Neuroscience Center, University of Zurich, Switzerland
| | - Christian Fung
- Department of Neurosurgery, University Hospital Berne, Berne, Switzerland
| | - Philippe Bijlenga
- Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland
| | - Daniel W Zumofen
- Department of Neurosurgery, University Hospital Basel, Basel, Switzerland
| | - Rodolfo Maduri
- Department of Neurosurgery, University Hospital Lausanne, Lausanne, Switzerland
| | - Thomas Robert
- Department of Neurosurgery, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Martin A Seule
- Department of Neurosurgery, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Serge Marbacher
- Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Olivia Geisseler
- Neuropsychology Unit, Department of Neurology, University Hospital Zurich, Zurich, Switzerland
| | - Peter Brugger
- Neuropsychology Unit, Department of Neurology, University Hospital Zurich, Zurich, Switzerland
| | - Klemens Gutbrod
- Neuropsychology Unit, Department of Neurology, University Hospital Berne, Berne, Switzerland
| | - Christian Chicherio
- Neuropsychology Unit, Department of Neurology, University Hospital Geneva, Geneva, Switzerland
| | - Andreas U Monsch
- Neuropsychology Unit, Department of Neurology, Memory Clinic Basel, Basel, Switzerland
| | - Valérie Beaud
- Neuropsychology Unit, Department of Neurology, University Hospital Lausanne, Lausanne, Switzerland
| | - Stefania Rossi
- Neuropsychology Unit, Department of Neurology, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Severin Früh
- Neuropsychology Unit, Department of Neurology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Nicole Schmid
- Neuropsychology Unit, Department of Neurology, Kantonsspital Aarau, Aarau, Switzerland
| | - Nicolas R Smoll
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Emanuela Keller
- Department of Neurosurgery, University Hospital Zurich, Clinical Neuroscience Center, University of Zurich, Switzerland
| | - Luca Regli
- Department of Neurosurgery, University Hospital Zurich, Clinical Neuroscience Center, University of Zurich, Switzerland
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Hiley MJ, Schmid N, Yeadon MR. How do technique and coordination change during learning of a whole-body task: Application to the upstart in gymnastics. J Sports Sci 2019; 37:2374-2380. [DOI: 10.1080/02640414.2019.1634413] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Michael J. Hiley
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UK
| | - Nicole Schmid
- Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Maurice R. Yeadon
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UK
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11
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Schmid N, Stöckl JB, Flenkenthaler F, Dietrich KG, Schwarzer JU, Köhn FM, Drummer C, Fröhlich T, Arnold GJ, Behr R, Mayerhofer A. Characterization of a non-human primate model for the study of testicular peritubular cells-comparison with human testicular peritubular cells. Mol Hum Reprod 2019; 24:401-410. [PMID: 29846669 DOI: 10.1093/molehr/gay025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 05/27/2018] [Indexed: 01/06/2023] Open
Abstract
STUDY QUESTION Are monkey testicular peritubular cells (MKTPCs) from the common marmoset monkey (Callithrix jacchus) a suitable translational model for the study of human testicular peritubular cells (HTPCs)? SUMMARY ANSWER MKTPCs can be isolated and propagated in vitro, retain characteristic markers for testicular peritubular cells and their proteome strongly (correlation coefficient of 0.78) overlaps with the proteome of HTPCs. WHAT IS KNOWN ALREADY Smooth-muscle-like peritubular cells form the wall of seminiferous tubules, transport sperm, are immunologically active, secrete a plethora of factors and may contribute to the spermatogonial stem cell niche. Mechanistic studies are hampered by heterogeneity of human samples. STUDY DESIGN, SIZE, DURATION We established a culture method for MKTPCs and characterized these cells from six young adult animals (2-3 years). To examine whether they qualify as a translational model we also examined HTPCs from seven men and compared the proteomes of both groups. PARTICIPANTS/MATERIALS, SETTING, METHODS We used explant cultures to obtain MKTPCs, which express smooth muscle markers (calponin (CNN1), smooth muscle actin (ACTA2)), lack FSH-receptors (FSHR) and LH-receptors (LHCGR), but possess androgen receptors (AR). MKTPCs can be passaged at least up to eight times, without discernable phenotypic changes. Mass-spectrometry-based analyses of the MKTPC and HTPC proteomes were performed. MAIN RESULTS AND THE ROLE OF CHANCE We established a method for isolation and cultivation of MKTPCs, and provide a comprehensive analysis of their protein repertoire. The results let us conclude that MKTPCs are suitable as a non-human primate model to study peritubular cell functions. LARGE SCALE DATA List of identified proteins in MKTPCs by liquid chromatography-tandem mass spectrometry is accessible at the ProteomeXchange (identifier PXD009394). LIMITATIONS, REASON FOR CAUTION This is an in vitro cellular non-human primate model used to provide a window into the role of these cells in the human testis. WIDER IMPLICATIONS OF THE FINDINGS Previous studies with HTPCs from patients revealed a degree of heterogeneity, possibly due to age, lifestyle and medical history of the individual human donors. We anticipate that the new translational model, derived from young healthy non-human primates, may allow us to circumvent these issues and may lead to a better understanding of the role of peritubular cells. STUDY FUNDING AND COMPETION OF INTEREST(S) This work was supported by grants from the Deutsche Forschungsgemeinschaft (MA 1080/27-1; AR 362/9-1; BE 2296/8-1). The authors declare no competing financial interests.
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Affiliation(s)
- N Schmid
- Cell Biology-Anatomy III, Biomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Großhaderner Strasse 9, Martinsried, Germany
| | - J B Stöckl
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, Fedor-Lynen-Strasse 25, Munich, Germany
| | - F Flenkenthaler
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, Fedor-Lynen-Strasse 25, Munich, Germany
| | - K-G Dietrich
- Cell Biology-Anatomy III, Biomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Großhaderner Strasse 9, Martinsried, Germany
| | - J U Schwarzer
- Andrology Center, Lortzingstrasse 26, Munich, Germany
| | - F-M Köhn
- Andrologicum, Burgstrassse 7, Munich, Germany
| | - C Drummer
- Platform Degenerative Diseases, German Primate Center, Kellnerweg 4, Göttingen, Germany
| | - T Fröhlich
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, Fedor-Lynen-Strasse 25, Munich, Germany
| | - G J Arnold
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, Fedor-Lynen-Strasse 25, Munich, Germany
| | - R Behr
- Platform Degenerative Diseases, German Primate Center, Kellnerweg 4, Göttingen, Germany
| | - A Mayerhofer
- Cell Biology-Anatomy III, Biomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Großhaderner Strasse 9, Martinsried, Germany
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Mayer C, Adam M, Walenta L, Schmid N, Heikelä H, Schubert K, Flenkenthaler F, Dietrich KG, Gruschka S, Arnold GJ, Fröhlich T, Schwarzer JU, Köhn FM, Strauss L, Welter H, Poutanen M, Mayerhofer A. Insights into the role of androgen receptor in human testicular peritubular cells. Andrology 2018; 6:756-765. [PMID: 29869453 DOI: 10.1111/andr.12509] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 10/27/2017] [Revised: 05/08/2018] [Accepted: 05/09/2018] [Indexed: 01/07/2023]
Abstract
Contractile smooth muscle-like peritubular cells build the wall of seminiferous tubules in men. They are crucial for sperm transport and complement the functions of Sertoli cells by secreting factors, including glial cell line-derived neurotrophic factor. Previous studies revealed that they also secrete the chemokine C-X-C motif chemokine ligand 12 (CXCL12), which has known roles in spermatogenesis. Peritubular cells express the androgen receptor (AR), which is retained in isolated human testicular peritubular cells. We aimed to explore AR-regulated functions in human testicular peritubular cells. Bearing in mind that infertile men often have high aromatase activity, which may lower intratesticular androgen concentrations, an animal model for male infertility was studied. These mice display an age-dependent loss in spermatogenesis due to high aromatase activity. Human testicular peritubular cells were exposed to dihydrotestosterone or the antiandrogen flutamide. We studied AR, smooth muscle cell markers, glial cell line-derived neurotrophic factor and 15 secreted factors previously identified, including CXCL12. We used qPCR, Western blotting, ELISA or selected reaction monitoring (SRM). In the animal model for male infertility, we employed qPCR and immunohistochemistry. Dihydrotestosterone increased AR and flutamide prevented these actions. The smooth muscle cell markers calponin and smooth muscle actin were likewise increased, while cell size or cellular proliferation was not changed. Dihydrotestosterone did not increase glial cell line-derived neurotrophic factor or CXCL12 secretion but increased levels of serine proteinase inhibitor (SERPIN) E1. The animal model for male infertility with high aromatase activity showed reduced numbers of AR-immunoreactive testicular peritubular cells, suggesting that altered androgen and/or oestrogen levels could influence AR-mediated responses in peritubular cells. Androgens act on human testicular peritubular cells to enhance AR levels, their contractile phenotype and to modulate the secretion of some secreted factors. This study suggests that some aspects of human peritubular cell functions are regulated by androgens.
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Affiliation(s)
- C Mayer
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - M Adam
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany.,Turku Center for Disease Modeling and Institute of Biomedicine, University of Turku, Turku, Finland
| | - L Walenta
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - N Schmid
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - H Heikelä
- Turku Center for Disease Modeling and Institute of Biomedicine, University of Turku, Turku, Finland
| | - K Schubert
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - F Flenkenthaler
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU, Munich, Germany
| | - K-G Dietrich
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - S Gruschka
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - G J Arnold
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU, Munich, Germany
| | - T Fröhlich
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU, Munich, Germany
| | | | | | - L Strauss
- Turku Center for Disease Modeling and Institute of Biomedicine, University of Turku, Turku, Finland
| | - H Welter
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - M Poutanen
- Turku Center for Disease Modeling and Institute of Biomedicine, University of Turku, Turku, Finland
| | - A Mayerhofer
- Cell Biology, Anatomy III, BMC Munich, Ludwig-Maximilians-Universität (LMU), Munich, Germany
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Abstract
Precise metering in liquid dispensing applications often requires application-specific solutions due to incompatibilities of the sensor and actuator components with the dispensed liquids. Some reoccurring challenges are aggressive liquids that would damage the sensors or tubing, the need for sterile liquids while the pumps or sensors cannot be sterilized, or media that can clog the sensor channels. Two different dispensing systems are here presented where the dispensing flow rate or volume is indirectly measured through a coupled pressure change or airflow, thus avoiding contact between the sensor and liquid. The controlled pressure-driven dispensing (cPDD) system builds an overpressure in the liquid reservoir by pumping air and controls the opening of the liquid output valve based on the internal pressure development. The FlowCap system uses a liquid pump on the outlet, controlled by the measured inflow of air to the reservoir. Both systems are designed for compactness and portability and offer independent operation, as well as control and communication, over a wireless interface.
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Affiliation(s)
- T Volden
- 1 Tool and Instruments for Life Sciences, CSEM S.A., Alpnach Center, Alpnach Dorf, Switzerland
| | - J Goldowsky
- 1 Tool and Instruments for Life Sciences, CSEM S.A., Alpnach Center, Alpnach Dorf, Switzerland
| | - N Schmid
- 1 Tool and Instruments for Life Sciences, CSEM S.A., Alpnach Center, Alpnach Dorf, Switzerland
| | - V Revol
- 1 Tool and Instruments for Life Sciences, CSEM S.A., Alpnach Center, Alpnach Dorf, Switzerland
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Neidert MC, Maldaner N, Stienen MN, Roethlisberger M, Zumofen DW, D’Alonzo D, Marbacher S, Maduri R, Hostettler IC, Schatlo B, Schneider MM, Seule MA, Schöni D, Goldberg J, Fung C, Arrighi M, Valsecchi D, Bijlenga P, Schaller K, Bozinov O, Regli L, Burkhardt JK, Fandino J, Marbacher S, D'Alonzo D, Coluccia D, Schmid N, Zumofen D, Roethlisberger M, Mariani L, Guzman R, Monsch AU, Bläsi S, Fung C, Bervini D, Beck J, Raabe A, Goldberg J, Schöni D, Gralla J, Zweifel-Zehnder A, Gutbrod K, Müri R, Maduri R, Thomas Daniel R, Starnoni D, Messerer M, Levivier M, Beaud V, Valsecchi D, Arrighi M, Venier A, Reinert M, Kuhlen DE, Robert T, Rossi S, Sacco L, Bijlenga P, Corniola M, Schaller K, Chicherio C, Seule MA, Ferrari A, Weyerbrock A, Hlavica M, Fournier JY, Früh S, Schatlo B, Burkhardt JK, Stienen MN, Keller E, Regli L, Bozinov O, Maldaner N, Finkenstädt S, Neidert MC, Brugger P, Mondadori C. The Barrow Neurological Institute Grading Scale as a Predictor for Delayed Cerebral Ischemia and Outcome After Aneurysmal Subarachnoid Hemorrhage: Data From a Nationwide Patient Registry (Swiss SOS). Neurosurgery 2018; 83:1286-1293. [DOI: 10.1093/neuros/nyx609] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/06/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Marian Christoph Neidert
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Nicolai Maldaner
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Martin Nikolaus Stienen
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Michel Roethlisberger
- Department of Neurosurgery, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Daniel W Zumofen
- Department of Neurosurgery, University Hospital Basel, University of Basel, Basel, Switzerland
- Division of Diagnostic and Interventional Neuroradiology, Department of Radiology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Donato D’Alonzo
- Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Serge Marbacher
- Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Rodolfo Maduri
- Department Clinical Neurosciences, Service Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | | | - Bawarjan Schatlo
- Department of Neurosurgery, University Hospital Göttingen, Göttingen, Germany
| | - Michel M Schneider
- Department of Neurosurgery, Kantonsspital St.Gallen, St.Gallen, Switzerland
| | - Martin A Seule
- Department of Neurosurgery, Kantonsspital St.Gallen, St.Gallen, Switzerland
| | - Daniel Schöni
- Department of Neurosurgery, Inselspital Bern, Bern, Switzerland
| | | | - Christian Fung
- Department of Neurosurgery, Inselspital Bern, Bern, Switzerland
| | - Marta Arrighi
- Department of Neurosurgery, Ospedale Regionale di Lugano, Lugano, Switzerland
| | - Daniele Valsecchi
- Department of Neurosurgery, Ospedale Regionale di Lugano, Lugano, Switzerland
| | - Philippe Bijlenga
- Department of Neurosurgery, Hôpitaux Universitaires de Genève (HUG), Geneva, Switzerland
| | - Karl Schaller
- Department of Neurosurgery, Hôpitaux Universitaires de Genève (HUG), Geneva, Switzerland
| | - Oliver Bozinov
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Luca Regli
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Jan-Karl Burkhardt
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Zeeb B, Schöck V, Schmid N, Majer L, Herrmann K, Hinrichs J, Weiss J. Impact of food structure on the compatibility of heated WPI–pectin-complexes in meat dispersions. Food Funct 2018; 9:1647-1656. [DOI: 10.1039/c7fo01577a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Process-stable complexes composed of whey protein isolate (WPI) and sugar beet pectin have great potential as structuring agents or fat replacers in meat dispersions.
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Affiliation(s)
- Benjamin Zeeb
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Vanessa Schöck
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Nicole Schmid
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Lisa Majer
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Kurt Herrmann
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Jörg Hinrichs
- Department of Soft Matter Science and Dairy Technology
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Jochen Weiss
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
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16
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Schellenberg F, Schmid N, Häberle R, Hörterer N, Taylor WR, Lorenzetti S. Loading conditions in the spine, hip and knee during different executions of back extension exercises. BMC Sports Sci Med Rehabil 2017; 9:10. [PMID: 28451436 PMCID: PMC5404334 DOI: 10.1186/s13102-017-0074-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 02/02/2017] [Accepted: 04/06/2017] [Indexed: 11/10/2022]
Abstract
Background Back extension (BE) is a strength exercise for training the dorsal trunk and hip muscles. To optimise training recommendations that avoid overloading and possible injury, the aim of this study was to determine the loading conditions and the influence of different execution forms of BE on spine, hip and knee ranges of motion (RoMs), joint moments and muscle activity. Methods The kinematics, kinetics and muscle activity (EMG) of two execution types (BEh: dynamic hip, BEs: dynamic spine) and two versions (one-legged and two-legged) of BE were measured in 16 subjects. RoMs and external joint moments were calculated using an inverse dynamics approach and analysed with a linear mixed model. Results Although lumbar spine flexion was observed in both execution types, thoracic spine flexion predominantly occurred during BEs, whereas thoracic spine extension was observed during BEh. Larger maximal back and hip moments were observed for BEh than for BEs. The activity of the dorsal back and hip muscles, as observed using EMG, was increased for one-legged executions. Conclusion To strengthen the hips and lower back, BEh seem to be more efficient due to the higher moments, with higher or similar RoMs in the hip and lower back. One-legged BEs seem to provide an effective training for the hamstrings and hip regions without subjecting the spine to excessive loading, possibly promoting this as an effective exercise during training and rehabilitation.
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Affiliation(s)
- Florian Schellenberg
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
| | - Nicole Schmid
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
| | - Ramona Häberle
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
| | - Nicole Hörterer
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
| | - William R Taylor
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
| | - Silvio Lorenzetti
- Institute for Biomechanics, ETH Zürich, HCP H 21.1, Leopold-Ruzicka-Weg 4, 8093 Zürich, Switzerland
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17
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Zeeb B, Schöck V, Schmid N, Majer L, Herrmann K, Hinrichs J, Weiss J. Mixing behaviour of WPI–pectin-complexes in meat dispersions: impact of biopolymer ratios. Food Funct 2017; 8:333-340. [DOI: 10.1039/c6fo01436d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Particulated complexes composed of oppositely charged biopolymers were incorporated into highly concentrated protein matrices as potential fat replacers and structuring agents.
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Affiliation(s)
- Benjamin Zeeb
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Vanessa Schöck
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Nicole Schmid
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Lisa Majer
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Kurt Herrmann
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Jörg Hinrichs
- Department of Soft Matter Science and Dairy Technology
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
| | - Jochen Weiss
- Department of Food Physics and Meat Science
- Institute of Food Science and Biotechnology
- University of Hohenheim
- 70599 Stuttgart
- Germany
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18
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Stienen M, Zweifel-Zehnder A, Chicherio C, Studerus-Germann A, Bläsi S, Rossi S, Gutbrod K, Schmid N, Beaud V, Mondadori C, Brugger P, Sacco L, Müri R, Hildebrandt G, Fournier J, Keller E, Regli L, Fandino J, Mariani L, Raabe A, Daniel R, Reinert M, Robert T, Schatlo B, Bijlenga P, Schaller K, Monsch A. Call for Uniform Psychosocial Assessment after Aneurysmal Subarachnoid Hemorrhage: Swiss Recommendations. J Neurol Surg A Cent Eur Neurosurg 2015. [DOI: 10.1055/s-0035-1564509] [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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19
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Zweifel-Zehnder AE, Stienen MN, Chicherio C, Studerus-Germann A, Bläsi S, Rossi S, Gutbrod K, Schmid N, Beaud V, Mondadori C, Brugger P, Sacco L, Müri R, Hildebrandt G, Fournier JY, Keller E, Regli L, Fandino J, Mariani L, Raabe A, Daniel RT, Reinert M, Robert T, Schatlo B, Bijlenga P, Schaller K, Monsch AU. Call for uniform neuropsychological assessment after aneurysmal subarachnoid hemorrhage: Swiss recommendations. Acta Neurochir (Wien) 2015; 157:1449-58. [PMID: 26179382 DOI: 10.1007/s00701-015-2480-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 06/12/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND In a high proportion of patients with favorable outcome after aneurysmal subarachnoid hemorrhage (aSAH), neuropsychological deficits, depression, anxiety, and fatigue are responsible for the inability to return to their regular premorbid life and pursue their professional careers. These problems often remain unrecognized, as no recommendations concerning a standardized comprehensive assessment have yet found entry into clinical routines. METHODS To establish a nationwide standard concerning a comprehensive assessment after aSAH, representatives of all neuropsychological and neurosurgical departments of those eight Swiss centers treating acute aSAH have agreed on a common protocol. In addition, a battery of questionnaires and neuropsychological tests was selected, optimally suited to the deficits found most prevalent in aSAH patients that was available in different languages and standardized. RESULTS We propose a baseline inpatient neuropsychological screening using the Montreal Cognitive Assessment (MoCA) between days 14 and 28 after aSAH. In an outpatient setting at 3 and 12 months after bleeding, we recommend a neuropsychological examination, testing all relevant domains including attention, speed of information processing, executive functions, verbal and visual learning/memory, language, visuo-perceptual abilities, and premorbid intelligence. In addition, a detailed assessment capturing anxiety, depression, fatigue, symptoms of frontal lobe affection, and quality of life should be performed. CONCLUSIONS This standardized neuropsychological assessment will lead to a more comprehensive assessment of the patient, facilitate the detection and subsequent treatment of previously unrecognized but relevant impairments, and help to determine the incidence, characteristics, modifiable risk factors, and the clinical course of these impairments after aSAH.
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Affiliation(s)
- Antoinette E Zweifel-Zehnder
- Division of Neuropaediatrics, Development, and Rehabilitation, Department of Paediatrics, Inselspital Bern, Bern, Switzerland
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20
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Calteux N, Schmid N, Hellers J, Kumpan S, Schmitz B. [Neonatal cleft lip repair: perioperative safety and surgical outcomes]. ANN CHIR PLAST ESTH 2013; 58:638-43. [PMID: 23623629 DOI: 10.1016/j.anplas.2013.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 03/18/2013] [Indexed: 11/26/2022]
Abstract
INTRODUCTION There is no international consensus on timing for surgical repair of cleft lip and palate. We argue that neonatal timing for repair of the lip deformity allows a better integration of the baby in his family and is of major support for the parents. Recent studies tend to challenge this neonatal practice. PATIENTS AND METHODS We want to study retrospectively the perioperative safety and the surgical outcomes of this procedure over the past 20 years in a series of 42 non-selected babies who had labial repair during the first four weeks of their life. All of them have been operated by the same senior surgeon. RESULTS Median operative time is 45 minutes for unilateral cleft and 70 minutes in case of bilateral malformation. Oral feeding is initiated at the end of the operative day. Children's hospital stay is four days. The results show no anaesthetic complication. Four children had secondary lip correction. CONCLUSION The risk of anaesthetic and surgical interventions limited to the lip before the age of 28 days is very low in a medical care environment specialized in neonatal surgery and postoperative care. The over all complication rate is very low.
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Affiliation(s)
- N Calteux
- Service de chirurgie plastique reconstructrice et esthétique, centre hospitalier de Luxembourg, 4, rue E. Barblé, L-1210 Luxembourg, Grand-Duché de Luxembourg.
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Calteux N, Berchem G, Schmid N, Nebendahl J, Fischer G. [Giant melanoma of the scalp: Case report]. Bull Soc Sci Med Grand Duche Luxemb 2013:40-46. [PMID: 23808109] [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: 06/02/2023]
Abstract
We present a case of giant melanoma of the scalp observed in our department. It is a rare but very aggressive pathology which is generally treated by radical surgery. We emphasize early diagnosis because a large extension of the tumor can lead to the need of a very extensive surgical resection. Prognosis is very severe despite adjuvant medical treatments.
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Affiliation(s)
- N Calteux
- Service de chirurgie plastique reconstructrice et esthétique, Centre Hospitalier de Luxembourg, 4 rue Barblé, 1210 Luxembourg
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Fischereder K, Primus G, Hoda R, Von Heyden B, Kühn M, Schmid N, Moll V, Hamza A, Karsch J, Brössner C, Fornara P, Bauer W. UP-03.180 The Self Anchoring Adjustable Transobturator Male System (ATOMS®) in the Treatment of Stress Urinary Incontinence in Men: A Retrospective Multicenter Study of 99 Patients. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1269] [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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23
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Schmid N, Ehrensperger M, Berres M, Monsch A. P1‐451: Development of a composite score of the German CERAD‐Plus‐Neuropsychological assessment battery. Alzheimers Dement 2011. [DOI: 10.1016/j.jalz.2011.05.733] [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: 11/25/2022]
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Monsch AU, Schmid N, Gomez-Mancilla B, Staehelin HB, Taylor KI. P2‐151: Neuropsychological markers of impending dementia. Alzheimers Dement 2010. [DOI: 10.1016/j.jalz.2010.05.1199] [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: 12/01/2022]
Affiliation(s)
- Andreas U. Monsch
- Memory Clinic, Department of Geriatrics University HospitalBasel Switzerland
| | - Nicole Schmid
- Memory Clinic, Department of Geriatrics University HospitalBasel Switzerland
| | | | - Hannes B. Staehelin
- Memory Clinic, Department of Geriatrics University HospitalBasel Switzerland
| | - Kirsten I. Taylor
- Memory Clinic, Department of Geriatrics University HospitalBasel Switzerland
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Schmid N, Deplazes P, Hoby S, Ryser-Degiorgis MP, Edelhofer R, Mathis A. Babesia divergens-like organisms from free-ranging chamois (Rupicapra r. rupicapra) and roe deer (Capreolus c. capreolus) are distinct from B. divergens of cattle origin – An epidemiological and molecular genetic investigation. Vet Parasitol 2008; 154:14-20. [DOI: 10.1016/j.vetpar.2008.02.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Revised: 01/14/2008] [Accepted: 02/25/2008] [Indexed: 10/22/2022]
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Pauer W, Schmid N, Aichinger W. Trimethoprim versus Cotrimoxazol - Eine randomisierte Studie. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1061637] [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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Horvath G, Mendes ES, Schmid N, Schmid A, Conner GE, Salathe M, Wanner A. Rapid corticosteroid effect on long-acting 2-agonist disposal by smooth muscle cells in the airway: a new paradigm of inhaled combination therapy. Eur Respir Rev 2008. [DOI: 10.1183/09059180.00010708] [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: 11/05/2022] Open
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Hoby S, Robert N, Mathis A, Schmid N, Meli ML, Hofmann-Lehmann R, Lutz H, Deplazes P, Ryser-Degiorgis MP. Babesiosis in free-ranging chamois (Rupicapra r. rupicapra) from Switzerland. Vet Parasitol 2007; 148:341-5. [PMID: 17689015 DOI: 10.1016/j.vetpar.2007.06.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 06/23/2007] [Accepted: 06/25/2007] [Indexed: 10/23/2022]
Abstract
Pathological examination of five adult chamois (Rupicapra r. rupicapra) found dead in two different regions from the Swiss Alps revealed pale mucous membranes and musculature, swollen spleen and haemoglobinuria. Histologically, haemosiderosis in the spleen and centrilobular hepatic necrosis were the predominant findings. On blood smears, small (approximately 0.84-1.47 microm), round to pyriform, peripherally located inclusions were present in the erythrocytes. PCR followed by sequencing of DNA extracted from blood or spleen of the infected animals revealed 99-100% identity of the amplified part of the 18S rRNA gene with GenBank entries attributed to Babesia divergens/Babesia capreoli. This is the first report of fatal Babesia infections in chamois raising the question of an emerging disease in this species.
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Affiliation(s)
- Stefan Hoby
- Centre for Fish and Wildlife Health, Institute of Animal Pathology, Vetsuisse Faculty, University of Berne, Länggassstrasse 122, 3001 Bern, Switzerland.
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29
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Schmid N, De Greef C, Calteux N, Duhem C, Faverly D. [Vertical reduction mammaplasty for gigantomastia with massive fibroadenomatosis: a case report]. ANN CHIR PLAST ESTH 2006; 51:536-41. [PMID: 16677750 DOI: 10.1016/j.anplas.2006.03.001] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2005] [Accepted: 03/10/2006] [Indexed: 11/15/2022]
Abstract
Vertical reduction mammaplasty is one of the most debated << short-scar >> breast reduction technique. Advantages and drawbacks of the technique are discussed; most of the authors do not accept it as the technique of choice for high glandular resection weights. In our case report we achieve it for a resection weight up to two kilograms with an areolar transposition distance of more than ten centimetres. We show that it is reasonable to realize it dealing with gigantomastia. The massive fibroadenomatosis is observed following immunosuppressive treatment for kidney transplantation. Cyclosporine intake, even sporadic, is at the origin of the growth of these multiple, bilateral and large fibroadenomas. Drug-induced cytokines stimulate their development.
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Affiliation(s)
- N Schmid
- Service de Chirurgie Plastique, Centre Hospitalier de Luxembourg, 4, rue Barblé, 1210 Luxembourg, Grand-Duché de Luxembourg.
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Mueller T, Dieplinger B, Gegenhuber A, Haidinger D, Schmid N, Roth N, Ebner F, Landl M, Poelz W, Haltmayer M. Serum total 8-iso-prostaglandin F2α: A new and independent predictor of peripheral arterial disease. J Vasc Surg 2004; 40:768-73. [PMID: 15472607 DOI: 10.1016/j.jvs.2004.07.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Circulating 8-iso-prostaglandin F 2alpha (8-iso-PGF 2alpha ) has been proposed as new indicator of oxidative stress, which is involved in the pathophysiologic changes of atherosclerosis. We proposed to test the hypothesis that 8-iso-PGF 2alpha is an independent predictor of symptomatic peripheral arterial disease (PAD). METHODS A case-control study in 100 patients with symptomatic PAD and 100 control subjects matched for age, sex, and diabetes mellitus was conducted. Smokers and subjects using lipid-lowering drugs were excluded. Serum total 8-iso-PGF 2alpha was quantified with an enzyme immunoassay. RESULTS Median 8-iso-PGF 2alpha was higher in patients with PAD than in control subjects (63 vs 42 pg/mL; P = .001). Logistic regression with hypertension, body mass index, and creatinine, low-density lipoprotein (LDL) cholesterol, triglyceride, high-sensitivity C-reactive protein (hs-CRP), 8-iso-PGF 2alpha , and total homocysteine concentrations as independent variables and case-control status as dependent variable revealed significant odds ratios (OR) for hypertension (OR, 3.74; 95% confidence interval [CI], 1.85-7.53), low-density lipoprotein cholesterol (OR, 1.16, for an increment of 10 mg/dL; 95% CI, 1.07-1.27), high-sensitivity C-reactive protein (OR, 1.02, for an increment of 1 mg/L; 95% CI, 1.00-1.03), and 8-iso-PGF 2alpha (OR, 1.11, for an increment of 10 pg/mL; 95% CI, 1.03-1.20). CONCLUSIONS Serum total 8-iso-PGF 2alpha was an independent predictor of PAD in the population studied. This finding supports the hypothesis that 8-iso-PGF 2alpha is a risk marker for PAD. Our results indicate increased systemic oxidative stress in patients with PAD.
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Affiliation(s)
- T Mueller
- Department of Laboratory Medicine, Konventhospital Barmherize Brueder Linz, Austria.
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31
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Tschopp K, Schillinger C, Schmid N, Rausch M, Bilecen D, Scheffler K. [Detection of central auditory compensation in unilateral deafness with functional magnetic resonance tomography]. Laryngorhinootologie 2000; 79:753-7. [PMID: 11199459 DOI: 10.1055/s-2000-9136] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Functional magnetic resonance imaging (fMRI) is a noninvasive method to detect focal brain activity at high spatial resolution. Acoustic stimulation induces an increase of regional cerebral blood flow in the primary auditory cortex. This entails an increased concentration of diamagnetic oxyhemoglobin in the capillaries and the venous system. The resulting decrease of the local magnetic susceptibility was detected as a signal increase in T2*-weighted images. The central auditory pathways predominantly cross to the contralateral hemisphere in normally hearing subjects. The aim of the present study was to investigate the primary auditory cortex after acoustic stimulation in unilateral deaf patients using fMRI. METHODS Magnetic resonance images were acquired on a 1.5 T Siemens Vision scanner. For fMRI, a single shot gradient recalled, echo planar imaging (EPI) sequence with decreasing excitation order was used, allowing the aquisition of 9 slices within 1.8 s. The 9 slices covered a slab of 3.6 cm in cranio-caudal extension in the region of the temporal lobes. For statistical processing of the raw image data the SPM96 software package was used. A p-value of p < 0.01 was applied to differentiate between activated and non-activated. The resulting functional activation maps were superimposed onto the EPI scan. The number of activated pixels was used to quantitate the cortical response upon acoustic stimulation. Stimulation consisted of a 1000-Hz sine tone (100 dB SPL at the distal end of the head phone, pulsed at 6 Hz) to which the patients were asked to listen passively. A piezoelectric loudspeaker was mounted on the subject table and connected to a plastic tube system leading to a combination of bilateral ear- and headphones. Auditory paradigms require disentangling experimental excitation from the scanner noise that approximates 90 dB. Headphones suppress noise by approximately 30 dB. To decrease the acoustic background-to-stimulation ratio and to keep background noise constant during stimulation and resting, we employed short scanning (1.8 s) and long resting periods (10.2 s; TR = 12 s). This acquisition mode allows sufficient recovery during off-periods and sufficient excitation during on-periods. 14 unilateral deaf patients were examined. The mean duration of deafness was 22.5 years. RESULTS Acoustic stimulation of the deaf ear revealed only weak cortical activation which could be explained by sound transmission via bone conduction to the other ear. A significant increase of BOLD (blood oxygen level dependent)-activation in the primary auditory cortex could be demonstrated in all patients after stimulation of the hearing ear. However, remarkable individual differences were noticed concerning the absolute number of activated pixels. The lateralization ratio was calculated by the number of activated pixels on the hearing side divided by the number of activated pixels on the deaf side. A mean lateralization ratio of 0.9 (Stdv +/- 0.6) was found. The mean lateralization ratio for patients with a right deaf ear (n = 8) and those with a left deaf ear (n = 5) was 1.1 (Stdv +/- 0.7) and 0.6 (Stdv +/- 0.3) respectively. However, the difference was not significant (Wilcoxon test: p = 0.08). CONCLUSIONS Central-auditory compensation by bilateral cortical activation was demonstrated in unilateral deaf patients. Moreover, a tendency towards a dominance of the left primary auditory cortex was found, although the difference between both hemispheres was not significant. The lateralization ratio in unilateral deaf patients is similar to findings after binaural stimulation in normally hearing subjects.
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Bilecen D, Seifritz E, Radü EW, Schmid N, Wetzel S, Probst R, Scheffler K. Cortical reorganization after acute unilateral hearing loss traced by fMRI. Neurology 2000; 54:765-7. [PMID: 10680824 DOI: 10.1212/wnl.54.3.765] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Unilateral acoustic stimulation produces a functional MRI (fMRI)-blood-oxygenation-level-dependent (BOLD) response mainly in the contralateral auditory cortex. In unilateral deaf patients, the BOLD response is bilateral. We studied a subject with sudden hearing loss after cochlear nerve resection before and repeatedly after surgery. During normal bilateral hearing, contralateral cortical BOLD responses were found. Progressing compensatory reorganization with bilateral representation of unilateral stimulation was detected over a period of approximately 1 year.
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Affiliation(s)
- D Bilecen
- Department of Radiology, University of Basel, Switzerland
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33
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Schmid N. Acute care and long term care partner to provide better services for seniors. Ambul Outreach 1999:15-7. [PMID: 10346574] [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: 02/12/2023]
Abstract
Many seniors have the same common problem, they have experienced the frustration of having to go to several different facilities, making more than one trip, to access appropriate medical, rehabilitation, behavioral, and/or long term health care services. The seemingly simple task of obtaining a medical evaluation can often require not only a physical examination, but also a visit to a laboratory to have blood drawn, vision and/or hearing testing, a physical or rehabilitation therapy assessment and more. This series of events can be particularly difficult for seniors. Seniors may require assistance of a friend or family member and can be compounded when mental health issues are involved as well.
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Affiliation(s)
- N Schmid
- IHC Senior Clinic, Salt Lake City, UT, USA
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34
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Teiche PE, Pauer W, Schmid N. Use of talcum in sclerotherapy of pelvic lymphoceles. Tech Urol 1999; 5:52-3. [PMID: 10374797] [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: 02/12/2023]
Abstract
Lymphoceles sometimes constitute an inconvenient problem after pelvic surgery combined with lymphadenectomy. We report on a case of a patient with carcinoma of the prostate treated by radical prostatectomy and pelvic lymphadenectomy, who developed a large pelvic lymphocele after surgery. The lymphocele was drained by a nephrostomy tube and sclerotherapy using a talcum solution was performed. Talcum is frequently used successfully in pleurodesis. The lymphocele disappeared within 2 weeks after one administration of the solution. Sclerotherapy with a talcum solution can be recommended as a simple, safe, and effective method in pelvic lymphoceles. The single dose and the lack of side effects are advantageous to other agents.
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Affiliation(s)
- P E Teiche
- Department of Urology, General Hospital Wels, Austria
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Abstract
Functional magnetic resonance imaging is a noninvasive and nonradioactive method for the detection of focal brain activity. In the present study the auditory cortex was investigated in nine normal subjects who were binaurally stimulated using pulsed sine tones of 500 Hz and 4000 Hz. The BOLD (blood oxygenation level dependent) signal change coincided with the stimulation paradigm and was detected in the plane of the superior temporal gyrus. The comparison of the spatial distribution of activated areas revealed a different behavior for the two frequencies. The present findings underline the existence of a frequency specific organization in the medio-lateral, fronto-occipital and cranio-caudal extension in both hemispheres of the auditory cortex in human. The activated areas for the high tone were found more frontally and medially orientated than the low tone stimulated areas. Furthermore, a slight cranio-caudal shift was observed for the higher frequency, more pronounced in the right than in the left temporal lobe. Finally, for most of the subjects investigated the BOLD activation area of the 500 Hz sine tone was larger than that of the 4000 Hz stimulation. Both frequencies showed a lateralization of signal response to the left temporal lobe.
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Affiliation(s)
- D Bilecen
- MR-Center and Biocenter, University of Basel, Department of Biophysical Chemistry, Switzerland
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36
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Schmid N, Tschopp K, Schillinger C, Bilecen D, Scheffler K, Seelig J. [Visualization of central auditory processes with functional magnetic resonance tomography]. Laryngorhinootologie 1998; 77:328-31. [PMID: 9701756 DOI: 10.1055/s-2007-996982] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Central auditory processes can be visualized using functional MRI in a non-invasive manner and at high spatial resolution. Acoustic stimulation leads to an increase of blood flow of activated areas in the plane of the superior temporal gyrus. Radiologically, this may be visualized based on the long T2-relaxation time of oxyhemoglobin. PATIENTS Ten normal-hearing subjects with ages between 28 and 38 years took part in the investigations. They received binaural, monaural right, and monaural left stimulation with pulsed sine tones of 1000 Hz at a pulse rate of 6 Hz and a sound pressure level of 100 dB SPL. Tonotopic organization of the auditory cortex was visualized using stimulation by pulsed sine tones of 500 Hz and 4000 Hz. RESULTS Following monaural acoustic stimulation, increased activity of the contralateral auditory cortex could be demonstrated in 9 subjects. In one subject, bilateral activity was noted. Concerning the tonotopic organization of the auditory cortex, we could show that the higher frequencies were localized more medially and anteriorly; the lower frequencies were localized more laterally and posteriorly in the superior temporal gyrus. However, considerable overlap was noted. CONCLUSIONS The overlap of the different frequencies could explain the controversial discussion of the tonotopic organization of the auditory cortex. The results of the monaural acoustic stimulation show clearly the predominant signal increase of contralateral areas in the primary auditory cortex. These results confirm the opinion of the current textbooks that the fiber of the auditory pathways mostly cross. Further investigations using functional MRI are necessary for better understanding of physiological and pathophysiological central-auditory processes.
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Affiliation(s)
- N Schmid
- HNO-Klinik, Kantonsspital Liestal, Schweiz
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37
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Scheffler K, Bilecen D, Schmid N, Tschopp K, Seelig J. Auditory cortical responses in hearing subjects and unilateral deaf patients as detected by functional magnetic resonance imaging. Cereb Cortex 1998; 8:156-63. [PMID: 9542894 DOI: 10.1093/cercor/8.2.156] [Citation(s) in RCA: 168] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Functional magnetic resonance imaging is a non-invasive method for the detection of focal brain activity at high spatial resolution. Acoustic stimulation leads to a blood oxygenation level dependent signal change in the plane of the superior temporal gyrus. The dependence of this response in the auditory cortex on binaural, monaural left and monaural right acoustic stimulation for 10 healthy subjects and five monaural deaf patients is described. Acoustic stimulation consists of 1000 Hz pulsed sine tones at a pulse rate of 6 Hz and a sound pressure level of 95 dB. For monaural stimulation, normal-hearing subjects revealed a strong lateralization of cortical response towards the contralateral hemisphere. The lateralization ratios between left and right hemispheric response areas were 3.4-5.2 for monaural stimulation and nearly balanced for binaural stimulation. Additionally, the sum of cortical activation volumes induced by monaural left and right stimulation was approximately 30% smaller than for binaural stimulation, indicating either inhibitory mechanisms or neuronal facilitation within the auditory pathways. For monaural deaf subjects the lateralization ratio between left to right response was just 1.3 towards the contralateral hemisphere of the healthy ear, which is comparable to binaural responses of normal-hearing subjects. This observation seems to indicate a plasticity or a reorganization of auditory pathways of monaural deaf patients.
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Affiliation(s)
- K Scheffler
- MR Center and Biocenter, University of Basel, Switzerland.
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38
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Bilecen D, Scheffler K, Schmid N, Tschopp K, Seelig J. Monaural acoustic stimulation. Neuroimage 1996. [DOI: 10.1016/s1053-8119(96)80306-5] [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: 11/30/2022] Open
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Noszian IM, Balon R, Eitelberger FG, Schmid N. Bilateral testicular large-cell calcifying sertoli cell tumor and recurrent cardiac myxoma in a patient with Carney's complex. Pediatr Radiol 1995; 25 Suppl 1:S236-7. [PMID: 8577540] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Large-cell calcifying Sertoli cell tumors are exceedingly rare testicular tumors which can be distinguished from pure Sertoli cell tumors by distinctive microscopic features and multifocal and bilateral calcifications [1]. We describe the characteristic sonographic appearance of the tumor with pathologic correlation. This tumor also constitutes one of the conditions of Carney's complex [2], which includes cardiac and skin myxomas, myxoid mammary fibroadenomas, spotty skin pigmentation, primary pigmented nodular adrenocortical disease, pituitary adenoma and unusual testicular tumors, especially large-cell calcifying Sertoli cell tumor. We report the case of a 10-year-old boy with four of the above conditions. Recognition of this complex is important as cardiac myxomas can lead to lethal complications. Because of a tendency for familial occurrence, family members should be screened carefully [3].
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Affiliation(s)
- I M Noszian
- Department of Radiology II, Hospital of the Sisters of Mercy, Grieskirchnerstrasse 42, A-4600 Wels, Austria
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Leroy D, Schmid N, Behr JP, Filhol O, Pares S, Garin J, Bourgarit JJ, Chambaz EM, Cochet C. Direct identification of a polyamine binding domain on the regulatory subunit of the protein kinase casein kinase 2 by photoaffinity labeling. J Biol Chem 1995; 270:17400-6. [PMID: 7615545 DOI: 10.1074/jbc.270.29.17400] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Phosphorylation of many protein substrates by the protein kinase casein kinase 2 (CK2) is stimulated severalfold in the presence of polyamines such as spermine. Previous experiments have shown that CK2 is a polyamine binding protein and that the regulatory beta subunit is required for this binding activity. To delineate the spermine binding site of CK2, we have applied a photoaffinity labeling method using a tritiated photoactivable analog of spermine, [3H]sperminediazonium. The photoaffinity labeled beta subunit was cleaved with cyanogen bromide, and two labeled peptides were separated by high performance liquid chromatography. The major one was the peptide T72EQAAEM78 and the minor one was a 22-amino acid peptide comprising residues Ile98 to Met119. Thr72 and His108 were identified as the labeled amino acids of the Thr72-Met78 and Ile98-Met119 peptides, respectively. In the same manner, we succeeded in determining the residue Leu220 as an alpha subunit residue covalently bound to the probe. The photoaffinity labeling method described here enabled the first elucidation, by direct microsequencing, of a polyamine binding site on CK2 for which we propose a provisional structural model. These observations suggest a possible mechanism for CK2 activation by polyamines at the molecular level.
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Affiliation(s)
- D Leroy
- INSERM Unit 244, Departement de Biologie Molécularie et Structurale, Centre d'Etudes Nucléaires/Grenoble, France
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41
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Abstract
Polyamines produce on the NMDA-receptor channel activity a regulatory effect subsequent to their binding to specific sites on the receptor-complex. The photoactivatable polyamine derivative L-azidophenylspermine shows properties which suggest its potential as a photoaffinity probe to investigate the nature and topology of these sites. In the dark, its effect on the binding of tritiated N-(1-[thienyl]cyclohexyl)piperidine ([3H]TCP) to synaptosomal plasma membranes is similar to that of diaminodecane. Arcaine antagonizes both the effects of L-azidophenylspermine and diaminodecane on [3H]TCP binding. L-Azidophenylspermine competes in post-synaptic densities with tritiated spermidine for a unique binding site with an EC50 similar to that of spermine. Upon irradiation, L-azidophenyl-spermine incorporates into this material with a high efficiency to a level consistent with both the Bmax for tritiated spermidine and the estimated density of NMDA receptors in this fraction.
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Affiliation(s)
- B Foucaud
- Laboratoire de Chimie Bioorganique, CNRS URA 1386, Université Louis Pasteur, School of Pharmacy, Illkirch, France
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Schmid N, Behr JP. Location of spermine and other polyamines on DNA as revealed by photoaffinity cleavage with polyaminobenzenediazonium salts. Biochemistry 1991; 30:4357-61. [PMID: 2021627 DOI: 10.1021/bi00231a035] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Although polyamines interact strongly with nucleic acids, X-ray and NMR studies have not revealed much structural information about spermine-DNA complexes. Therefore, it was of interest to look at the binding of polyamines to 32P-labeled DNA restriction fragments by sequencing gel electrophoresis of the photoaffinity cleavage products induced by polyaminobenzendiazonium salts. The shift of cleavage patterns observed on opposite strands as well as competition experiments with distamycin shows polyamines to be located in the minor groove of B-DNA and to depend on the nucleic acid polymorphism, jumping to the major groove in the A-form. The sequence selectivities of various polycations (spermine, putrescine, and cobalt (III) hexaammine) are similar and slightly favor A,T-rich regions. Taken together, these results show that polycations which are not point charges are guided by the electronegative potential along the nucleic acid and suggest fast crawling of the polyamine within the minor groove, due to individual NH2+ jumping between multiple equidistant and isoenergetic bidentate hydrogen-bonding sites. Such a picture could be the clue to the unexpected NMR and to the frequently silent X-ray behavior of polyamines when bound to DNA.
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Affiliation(s)
- N Schmid
- Chimie Génétique, URA 1386 du CNRS, Faculté de Pharmacie, Strasbourg, France
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43
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Jacobs H, Rindt W, Schmid N. [Treatment of radiation proctitis]. Geburtshilfe Frauenheilkd 1971; 31:1114-7. [PMID: 4400659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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