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Patterson C, Schmidt R, Goncin U, Walker ME, Hedlin P. A comparison of sevoflurane waste anesthetic gas concentration across three Saskatoon health care facilities. Can J Anaesth 2023; 70:1860-1862. [PMID: 37715045 DOI: 10.1007/s12630-023-02580-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 09/17/2023] Open
Affiliation(s)
- C Patterson
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - R Schmidt
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - U Goncin
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - M E Walker
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - P Hedlin
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
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Caputo F, Keller B, Möhring M, Carrubbo L, Schmidt R. Advancing beyond technicism when managing big data in companies’ decision-making. JKM 2023. [DOI: 10.1108/jkm-10-2022-0794] [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] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
Purpose
In recognising the key role of business intelligence and big data analytics in influencing companies’ decision-making processes, this paper aims to codify the main phases through which companies can approach, develop and manage big data analytics.
Design/methodology/approach
By adopting a research strategy based on case studies, this paper depicts the main phases and challenges that companies “live” through in approaching big data analytics as a way to support their decision-making processes. The analysis of case studies has been chosen as the main research method because it offers the possibility for different data sources to describe a phenomenon and subsequently to develop and test theories.
Findings
This paper provides a possible depiction of the main phases and challenges through which the approach(es) to big data analytics can emerge and evolve over time with reference to companies’ decision-making processes.
Research limitations/implications
This paper recalls the attention of researchers in defining clear patterns through which technology-based approaches should be developed. In its depiction of the main phases of the development of big data analytics in companies’ decision-making processes, this paper highlights the possible domains in which to define and renovate approaches to value. The proposed conceptual model derives from the adoption of an inductive approach. Despite its validity, it is discussed and questioned through multiple case studies. In addition, its generalisability requires further discussion and analysis in the light of alternative interpretative perspectives.
Practical implications
The reflections herein offer practitioners interested in company management the possibility to develop performance measurement tools that can evaluate how each phase can contribute to companies’ value creation processes.
Originality/value
This paper contributes to the ongoing debate about the role of digital technologies in influencing managerial and social models. This paper provides a conceptual model that is able to support both researchers and practitioners in understanding through which phases big data analytics can be approached and managed to enhance value processes.
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Cuerva C, Cano M, Schmidt R. Improving the mesomorphism in bispyrazolate Pd(II) metallomesogens: an efficient platform for ionic conduction. Dalton Trans 2023; 52:4684-4691. [PMID: 36779291 DOI: 10.1039/d2dt03754h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The introduction of structural asymmetry in metallomesogens is an established strategy to improve their mesomorphic behaviour in terms of lower melting temperatures and higher stability ranges of the mesophase, which is particularly important for metallomesogens that have potential application as electrolytes that require wide operational temperature ranges. Here in this work, a novel series of unsymmetrical bis(isoquinolinylpyrazolate)palladium(II) compounds bearing four alkyl side-chains with different lengths are described. Rectangular and hexagonal columnar mesophases were formed with low melting temperatures of 42-45 °C in most cases, whereas the clearing temperatures reached values up to 412 °C. The charge transport properties have been studied by complex impedance spectroscopy, showing that the mesophase favours proton conduction in the absence of water or humidity. The exceptional thermal stability of these species makes them promising candidates to act as a platform for ionic conduction via the nanochannels originated in the columnar mesophases. The results presented confirm that introducing structural asymmetry in the Pd(II) metallomesogens studied is a valid strategy to enhance the liquid crystalline properties, which opens new ways to develop water-free electrolytes based on unsymmetrical bis(isoquinolinylpyrazolate) Pd(II) compounds for potential applications such as proton exchange membranes (PEMs).
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Affiliation(s)
- Cristián Cuerva
- MatMoPol Group. Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
| | - Mercedes Cano
- MatMoPol Group. Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
| | - Rainer Schmidt
- GFMC. Departamento de Física de Materiales, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
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Sánchez-Ahijón E, Schmidt R, Martínez de Irujo-Labalde X, Ansari HM, Fernández-Díaz MT, Morán E, Molero-Sánchez B, Prado-Gonjal J. Structural and dielectric properties of ultra-fast microwave-processed La0.3Ca0.7Fe0.7Cr0.3O3−δ ceramics. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123426] [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: 10/17/2022]
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García-Ramos C, Cascos V, Prado-Gonjal J, Schmidt R, Fernández-Díaz MT, Krezhov K, Alonso JA. BaFe 0.875Re 0.125O 3−δ
and BaFe 0.75Ta 0.25O 3−δ
as potential cathodes for solid-oxide fuel-cells: a structural study from neutron diffraction data. Z KRIST-CRYST MATER 2022. [DOI: 10.1515/zkri-2022-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this work, two new perovskites of composition BaFe0.875Re0.125O3−δ
and BaFe0.75Ta0.25O3−δ
, designed from ab-initio calculations to fulfill different requisites of cathode materials for solid-oxide fuel cells (SOFC), were prepared and studied from the structural point of view from neutron powder diffraction (NPD) data. They are both derivatives of BaFeO3 hexagonal perovskite (space group P6
3
/mmc), typified as the 6H polytype, stabilized when the perovskite tolerance factor slightly overpasses the unity. Whereas BaFe0.875Re0.125O3−δ
keeps this structural type, as demonstrated in this crystallographic study from NPD data at 295 and 4 K, with unit-cell parameters a = 5.70177(7); c = 14.0334(2) Å at 295 K, the second material, BaFe0.75Ta0.25O3−δ
, is cubic and can be defined in the Pm-3m space group, corresponding of the perovskite arystotype, with a = 4.05876(3) Å. A conspicuous oxygen deficiency is observed, with a refined stoichiometry of 2.86(3) per formula unit. The anisotropic displacement factors for oxygen atoms in this last material are flattened disks perpendicular to the (Fe,Ta)-O-(Fe,Ta) direction, suggesting a dynamic tilting of the octahedra that could be related to the oxygen motion via oxygen vacancies across the structure. This is a pre-requisite for functional mixed-ionic-electronic (MIEC) materials performing as cathodes in SOFC.
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Affiliation(s)
- Crisanto García-Ramos
- Instituto de Ciencia de Materiales de Madrid, CSIC , Cantoblanco 28049 Madrid , Spain
| | - Vanessa Cascos
- Instituto de Ciencia de Materiales de Madrid, CSIC , Cantoblanco 28049 Madrid , Spain
- Departamento de Química Inorgánica , Universidad Complutense de Madrid , E-28040 , Madrid , Spain
| | - Jesús Prado-Gonjal
- Departamento de Química Inorgánica , Universidad Complutense de Madrid , E-28040 , Madrid , Spain
| | - Rainer Schmidt
- Departamento de Física de Materiales , GFMC, Universidad Complutense de Madrid , E-28040 , Madrid , Spain
| | | | - Kiril Krezhov
- Institute for Nuclear Research and Nuclear Energy (INRNE) , Tsarigradsko Chaussee 72, BG-1784 Sofía , Bulgaria
| | - José Antonio Alonso
- Instituto de Ciencia de Materiales de Madrid, CSIC , Cantoblanco 28049 Madrid , Spain
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Taylor M, Cook C, Liu Y, Schmidt R, Hailer A, North J, Wang H, Kashem S, Purdom E, Marson A, Ramos S, Cho R, Cheng J. 509 A single-cell transcriptional gradient in human cutaneous memory T cells suppresses pathogenic Th17 inflammation. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.518] [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: 10/17/2022]
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Frid P, Xu H, Mitchell BD, Drake M, Wasselius J, Gaynor B, Ryan K, Giese AK, Schirmer M, Donahue KL, Irie R, Bouts MJRJ, McIntosh EC, Mocking SJT, Dalca AV, Giralt-Steinhauer E, Holmegaard L, Jood K, Roquer J, Cole JW, McArdle PF, Broderick JP, Jimenez-Conde J, Jern C, Kissela BM, Kleindorfer DO, Lemmens R, Meschia JF, Rosand J, Rundek T, Sacco RL, Schmidt R, Sharma P, Slowik A, Thijs V, Woo D, Worrall BB, Kittner SJ, Petersson J, Golland P, Wu O, Rost NS, Lindgren A. Migraine-Associated Common Genetic Variants Confer Greater Risk of Posterior vs. Anterior Circulation Ischemic Stroke☆. J Stroke Cerebrovasc Dis 2022; 31:106546. [PMID: 35576861 PMCID: PMC10601407 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106546] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/01/2022] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To examine potential genetic relationships between migraine and the two distinct phenotypes posterior circulation ischemic stroke (PCiS) and anterior circulation ischemic stroke (ACiS), we generated migraine polygenic risk scores (PRSs) and compared these between PCiS and ACiS, and separately vs. non-stroke control subjects. METHODS Acute ischemic stroke cases were classified as PCiS or ACiS based on lesion location on diffusion-weighted MRI. Exclusion criteria were lesions in both vascular territories or uncertain territory; supratentorial PCiS with ipsilateral fetal posterior cerebral artery; and cases with atrial fibrillation. We generated migraine PRS for three migraine phenotypes (any migraine; migraine without aura; migraine with aura) using publicly available GWAS data and compared mean PRSs separately for PCiS and ACiS vs. non-stroke control subjects, and between each stroke phenotype. RESULTS Our primary analyses included 464 PCiS and 1079 ACiS patients with genetic European ancestry. Compared to non-stroke control subjects (n=15396), PRSs of any migraine were associated with increased risk of PCiS (p=0.01-0.03) and decreased risk of ACiS (p=0.010-0.039). Migraine without aura PRSs were significantly associated with PCiS (p=0.008-0.028), but not with ACiS. When comparing PCiS vs. ACiS directly, migraine PRSs were higher in PCiS vs. ACiS for any migraine (p=0.001-0.010) and migraine without aura (p=0.032-0.048). Migraine with aura PRS did not show a differential association in our analyses. CONCLUSIONS Our results suggest a stronger genetic overlap between unspecified migraine and migraine without aura with PCiS compared to ACiS. Possible shared mechanisms include dysregulation of cerebral vessel endothelial function.
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Affiliation(s)
- P Frid
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden; Section of Neurology, Skåne University Hospital, Malmö, Sweden.
| | - H Xu
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.
| | - B D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Geriatric Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, MD, USA
| | - M Drake
- Department of Clinical Sciences Lund, Radiology, Lund University, Lund, Sweden; Department of Radiology, Neuroradiology, Skåne University Hospital, Lund, Sweden
| | - J Wasselius
- Department of Clinical Sciences Lund, Radiology, Lund University, Lund, Sweden; Department of Radiology, Neuroradiology, Skåne University Hospital, Lund, Sweden
| | - B Gaynor
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - K Ryan
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - A K Giese
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - M Schirmer
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - K L Donahue
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - R Irie
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - M J R J Bouts
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - E C McIntosh
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - S J T Mocking
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - A V Dalca
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA; Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
| | - E Giralt-Steinhauer
- Department of Neurology, Neurovascular Research Group (NEUVAS), IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Spain
| | - L Holmegaard
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - K Jood
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - J Roquer
- Department of Neurology, Neurovascular Research Group (NEUVAS), IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Spain
| | - J W Cole
- Department of Neurology, University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - P F McArdle
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - J P Broderick
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - J Jimenez-Conde
- Department of Neurology, Neurovascular Research Group (NEUVAS), IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Spain
| | - C Jern
- Department of Laboratory Medicine, Institute of Biomedicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - B M Kissela
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - D O Kleindorfer
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - R Lemmens
- Department of Neurosciences, Experimental Neurology, VIB Center for Brain & Disease Research, Department of Neurology, University Hospitals Leuven, KU Leuven - University of Leuven, Leuven, Belgium
| | - J F Meschia
- Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | - J Rosand
- Henry and Allison McCance Center for Brain Health Massachusetts General Hospital, Boston, USA
| | - T Rundek
- Department of Neurology, Miller School of Medicine, University of Miami, The Evelyn F. McKnight Brain Institute, FL, USA
| | - R L Sacco
- Department of Neurology, Miller School of Medicine, University of Miami, The Evelyn F. McKnight Brain Institute, FL, USA
| | - R Schmidt
- Clinical Division of Neurogeriatrics, Department of Neurology, Medical University Graz, Austria
| | - P Sharma
- Institute of Cardiovascular Research, Royal Holloway University of London (ICR2UL), Egham, United Kingdom
| | - A Slowik
- Department of Neurology, Jagiellonian University Medical College, Krakow, Poland
| | - V Thijs
- Stroke Division, Florey Institute of Neuroscience and Mental Health, and Department of Neurology, Austin Health, Heidelberg, Australia
| | - D Woo
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - B B Worrall
- Departments of Neurology and Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - S J Kittner
- Department of Neurology, University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - J Petersson
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
| | - P Golland
- Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
| | - O Wu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - N S Rost
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - A Lindgren
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden; Section of Neurology, Skåne University Hospital, Lund, Sweden
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Heijnen-Kohl SMJ, Hitzert B, Schmidt R, Geurts HM, van Alphen SPJ. Features and Needs of Autistic Older Adults: A Delphi Study of Clinical Experiences. Clin Gerontol 2022:1-11. [PMID: 35426768 DOI: 10.1080/07317115.2022.2060157] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES In geriatric psychiatry Autism Spectrum Disorders (ASD) are increasingly recognized. This study explores what clinicians know about diagnostic and/or therapeutic aspects of autistic older adults and how aging plays a role in the course of ASD. METHODS A Delphi study outlines the point of view of 11 clinical experts in the Netherlands and Belgium (Flanders). RESULTS Regarding diagnostics, age-specific aspects need to be considered. Age-related characteristics (cognitive differences, life events, co-occurring conditions) influence detecting autistic features in older adults. Regarding treatment, counseling methods need to be adapted. Psychoeducation, family therapy, couples therapy, behavioral counseling and psychopharmaca can be helpful in meeting the needs of autistic older adults. There was no consensus on the effects of aging on autistic older adults. CONCLUSIONS Diagnosis and treatment of ASD need adaptation for autistic older adults. Further research is needed on the validation of measurement tools, recorded treatment, therapy, psychoeducation, and the effects of aging among people on the autism spectrum. CLINICAL IMPLICATIONS Available knowledge helps clinicians to detect ASD in older adults and adapt to the specific features and needs of autistic older adults. The effects of aging on the course of ASD are unclear yet.
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Affiliation(s)
- S M J Heijnen-Kohl
- Clinical psychologist/psychotherapist and director at Mondriaan geriatric mental health care in Heerlen-Maastricht, The Netherlands
| | - B Hitzert
- Psychiatrist, BuurtzorgT, The Netherlands
| | - R Schmidt
- Geriatric Psychiatrist, The Netherlands
| | - H M Geurts
- Psychology Department, University of Amsterdam; and senior researcher at the Dr. Leo Kannerhuis national autism expertise centre, The Netherlands
| | - S P J van Alphen
- Department of Medical and Clinical Psychology, Tilburg University, The Netherlands; and health care psychologist and manager at Mondriaan geriatric mental health care in Heerlen-Maastricht, The Netherlands
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Waller H, Schmidt R. Fault detection and localization by vibration monitoring with observers. Struct Dyn 2022. [DOI: 10.1201/9780203738085-53] [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: 11/11/2022] Open
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10
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Zia H, Von Ah U, Meng Y, Schmidt R, Kerler J, Fuchsmann P. Biotechnological formation of dairy flavor inducing δ-lactones from vegetable oil. Food Chem X 2022; 13:100220. [PMID: 35498959 PMCID: PMC9039933 DOI: 10.1016/j.fochx.2022.100220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 12/05/2021] [Accepted: 01/14/2022] [Indexed: 10/25/2022] Open
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Vieira M, Souza C, Nobrega L, Reis R, Andrade C, Schmidt R, Carvalho L. Robotic-Assisted Uterus Retrieval from Living Donor for Uterine Transplantation: First Case in Brazil. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Haubensak R, Jackson M, Schmidt R, Wells J, Timmerman M, Hanson C. The Association Between Serum Vitamin D Levels and Bone-Related Outcomes in Patients 100 Days Post-Bone Marrow Transplant. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.091] [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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13
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Lange C, Machad. Weber A, Schmidt R, Schroeder C, Strowitzki T, Germeyer A. P–284 Changes in protein expression due to metformin treatment and hyperinsulinemia in a human endometrial cancer cell line. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
The aim of the study was to identify new target proteins/pathways that are affected by metformin treatment in endometrial cancer cells in a proteomic approach.
Summary answer
The expression of 1,300 different proteins were investigated, of which 80 proteins with the most prominent changes were presented and some discussed in detail.
What is known already
The incidence of endometrial cancer (EC) has increased over the past years. Metabolic diseases such as obesity, type II diabetes mellitus (T2DM), and associated conditions (i.e. polycystic ovary syndrome (PCOS), insulin resistance) lead to elevated levels of circulating estrogens, which promote EC development and progression. Metformin, an insulin-sensitizing biguanide drug, commonly used in the treatment of T2DM, especially in obese patients, displayed anti-cancer effects in various cancer types, including EC. Different proteins and pathways have been suggested as potential targets, but the underlying mechanism of action of metformin’s anti-cancer activity is still not completely understood.
Study design, size, duration
In the present in vitro study, EC cells were cultured in 5.5 mmol/L glucose medium (supplemented with 10 nmol/L ß-estradiol (E2)) and treated with metformin (0.5 mmol/L), insulin (100 ng/mL), or remained untreated for 7 d. The expression of 1,300 different proteins was detected in cellular extracts in an affinity proteomic approach and compared between the treatment groups in order to identify potential target proteins and pathways that contribute to the anti-cancer effects of metformin.
Participants/materials, setting, methods
The study was carried out with the EC cell line HEC–1A that represents a postmenopausal model with low E2 sensitivity. Proteins were extracted, quantified with the BCA assay, and protein expression was analyzed using the scioDiscover antibody microarray. Differences in protein abundance between samples were presented as log2-fold changes (log2FC) with significance for samples that displayed |log2FC| ≥ 0.5 and adjusted p ≤ 0.05. Pathway analysis was carried out with the STRING and DAVID databases.
Main results and the role of chance
The data revealed that metformin and insulin targeted similar pathways in the present study and mostly acted on proteins related to proliferation, migration and tumor immune response. These pathways may be affected in a tumor-promoting as well as a tumor-suppressing way by either metformin treatment or insulin supplementation. Results for the 80 most affected proteins were presented and the consequences for the cells resulting from the detected expression changes were discussed in detail for several proteins. The presented data helps identify potential target proteins and pathways affected by metformin treatment in EC and allows for a better understanding of the mechanism of action of the biguanide drug’s anti-cancer activity. However, further investigations are necessary to confirm the observations and conclusions drawn from the presented data after metformin administration, especially for proteins that were regulated in a favorable way, i.e. AKT3, CCND2, CD63, CD81, GFAP, IL5, IL17A, IRF4, PI3, and VTCN1. Further proteins might be of interest, where metformin counteracted unfavorable effects that have been induced by hyperinsulinemia.
Limitations, reasons for caution
The results were obtained from an in vitro study with human cancer cell lines, and thus cannot be easily extrapolated to patients.
Wider implications of the findings: In the context of a hyperinsulinemic environment, further proteins might be of interest, i.e. AMFR, CCND2, CD63, ERBB3, EZR, GFAP, IRF4, PI3, PLCG2, SORL1, VEGFA, VTCN1, SPP1, and TM9SF2. Here, a metformin-induced insulin-sensitization might be able to counteract unfavorable effects on protein expression profile that have been induced by hyperinsulinemia.
Trial registration number
Not applicable
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Affiliation(s)
- C Lange
- University Women’s Hospital Heidelberg, Department of Gynecological Endocrinology and Fertility Disorders, Heidelberg, Germany
| | - A Machad. Weber
- University Women’s Hospital Heidelberg, Department of Gynecological Endocrinology and Fertility Disorders, Heidelberg, Germany
| | - R Schmidt
- Sciomics GmbH, Contract Research, Heidelberg, Germany
| | - C Schroeder
- Sciomics GmbH, Contract Research, Heidelberg, Germany
| | - T Strowitzki
- University Women’s Hospital Heidelberg, Department of Gynecological Endocrinology and Fertility Disorders, Heidelberg, Germany
| | - A Germeyer
- University Women’s Hospital Heidelberg, Department of Gynecological Endocrinology and Fertility Disorders, Heidelberg, Germany
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Cook C, Liu Y, Schmidt R, Ramos S, Marson A, Cho R, Cheng J. 181 Tristetraprolin family members repress early T cell cytokine production and are recurrently downregulated in diverse human rashes. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.201] [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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Devarajan N, McGarvey JA, Scow K, Jones MS, Lee S, Samaddar S, Schmidt R, Tran TD, Karp DS. Cascading effects of composts and cover crops on soil chemistry, bacterial communities and the survival of foodborne pathogens. J Appl Microbiol 2021; 131:1564-1577. [PMID: 33825272 PMCID: PMC8519115 DOI: 10.1111/jam.15054] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 12/02/2020] [Revised: 02/05/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023]
Abstract
AIMS Recent foodborne disease outbreaks have caused farmers to re-evaluate their practices. In particular, concern that soil amendments could introduce foodborne pathogens onto farms and promote their survival in soils has led farmers to reduce or eliminate the application of animal-based composts. However, organic amendments (such as composts and cover crops) could bolster food safety by increasing soil microbial diversity and activity, which can act as competitors or antagonists and reduce pathogen survival. METHODS AND RESULTS Leveraging a study of a 27-year experiment comparing organic and conventional soil management, we evaluate the impacts of composted poultry litter and cover crops on soil chemistry, bacterial communities and survival of Salmonella enterica and Listeria monocytogenes. We found that bacterial community composition strongly affected pathogen survival in soils. Specifically, organic soils managed with cover crops and composts hosted more macronutrients and bacterial communities that were better able to suppress Salmonella and Listeria. For example, after incubating soils for 10 days at 20°C, soils without composts retained fourfold to fivefold more Salmonella compared to compost-amended soils. However, treatment effects dissipated as bacterial communities converged over the growing season. CONCLUSIONS Our results suggest that composts and cover crops may be used to build healthy soils without increasing foodborne pathogen survival. SIGNIFICANCE AND IMPACT OF THE STUDY Our work suggests that animal-based composts do not promote pathogen survival and may even promote bacterial communities that suppress pathogens. Critically, proper composting techniques are known to reduce pathogen populations in biological soil amendments of animal origin, which can reduce the risks of introducing pathogens to farm fields in soil amendments. Thus, animal-based composts and cover crops may be a safe alternative to conventional fertilizers, both because of the known benefits of composts for soil health and because it may be possible to apply amendments in such a way that food-safety risks are mitigated rather than exacerbated.
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Affiliation(s)
- N Devarajan
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, Davis, CA, USA
| | - J A McGarvey
- Agricultural Research Service, U.S. Department of Agriculture, Albany, CA, USA
| | - K Scow
- Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, USA
| | - M S Jones
- Department of Entomology, Washington State University, Pullman, WA, USA.,Tree Fruit Research and Extension Center, Washington State University, Wenatchee, WA, USA
| | - S Lee
- Agricultural Research Service, U.S. Department of Agriculture, Albany, CA, USA
| | - S Samaddar
- Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, USA
| | - R Schmidt
- Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, USA
| | - T D Tran
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, Davis, CA, USA
| | - D S Karp
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, Davis, CA, USA
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Colonna I, Koini M, Pirpamer L, Damulina A, Hofer E, Schwingenschuh P, Enzinger C, Schmidt R, Ropele S. Microstructural Tissue Changes in Alzheimer Disease Brains: Insights from Magnetization Transfer Imaging. AJNR Am J Neuroradiol 2021; 42:688-693. [PMID: 33509922 DOI: 10.3174/ajnr.a6975] [Citation(s) in RCA: 3] [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] [Received: 07/01/2020] [Accepted: 10/23/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND PURPOSE Reductions in magnetization transfer ratio have been associated with brain microstructural damage. We aim to compare magnetization transfer ratio in global and regional GM and WM between individuals with Alzheimer disease and healthy control participants to analyze the relationship between magnetization transfer ratio and cognitive functioning in Alzheimer disease. MATERIALS AND METHODS In this prospective study, participants with Alzheimer disease and a group of age-matched healthy control participants underwent clinical examinations and 3T MR imaging. Magnetization transfer ratios were determined in the cortex, AD-signature regions, normal-appearing WM, and WM hyperintensities. RESULTS Seventy-seven study participants (mean age ± SD, 72 ± 8 years; 47 female) and 77 age-matched healthy control participants (mean age ± SD, 72 ± 8 years; 44 female) were evaluated. Magnetization transfer ratio values were lower in patients with Alzheimer disease than in healthy control participants in all investigated regions. When adjusting for atrophy and extent of WM hyperintensities, significant differences were seen in the global cortex (OR = 0.47; 95% CI: 0.22, 0.97; P = .04), in Alzheimer disease-signature regions (OR = 0.31; 95% CI: 0.14, 0.67; P = .003), in normal-appearing WM (OR = 0.59; 95% CI: 0.39, 0.88; P = .01), and in WM hyperintensities (OR = 0.18; 95% CI: 0.09, 0.33; P ≤ .001). The magnetization transfer ratio in these regions was an independent determinant of AD. When correcting for atrophy and WM hyperintensity extent, lower GM magnetization transfer ratios were associated with poorer global cognition, language function, and constructional praxis. CONCLUSIONS Alzheimer disease is associated with magnetization transfer ratio reductions in GM and WM regions of the brain. Lower magnetization transfer ratios in the entire cortex and AD-signature regions contribute to cognitive impairment independent of brain atrophy and WM damage.
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Affiliation(s)
- I Colonna
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - M Koini
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - L Pirpamer
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - A Damulina
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - E Hofer
- Institute for Medical Informatics, Statistics and Documentation (E.H.)
| | - P Schwingenschuh
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - C Enzinger
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.).,Division of Neuroradiology, Vascular & Interventional Radiology, Department of Radiology (C.E.), Medical University of Graz, Graz, Austria
| | - R Schmidt
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
| | - S Ropele
- From the Department of Neurology (I.C., M.K., L.P., A.D., P.S., C.E., R.S., S.R.)
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17
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Stielow T, Schmidt R, Peltz C, Fennel T, Scheel S. Fast reconstruction of single-shot wide-angle diffraction images through deep learning. Mach Learn : Sci Technol 2020. [DOI: 10.1088/2632-2153/abb213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
Single-shot x-ray imaging of short-lived nanostructures such as clusters and nanoparticles near a phase transition or non-crystalizing objects such as large proteins and viruses is currently the most elegant method for characterizing their structure. Using hard x-ray radiation provides scattering images that encode two-dimensional projections, which can be combined to identify the full three-dimensional object structure from multiple identical samples. Wide-angle scattering using XUV or soft x-rays, despite yielding lower resolution, provides three-dimensional structural information in a single shot and has opened routes towards the characterization of non-reproducible objects in the gas phase. The retrieval of the structural information contained in wide-angle scattering images is highly non-trivial, and currently no efficient rigorous algorithm is known. Here we show that deep learning networks, trained with simulated scattering data, allow for fast and accurate reconstruction of shape and orientation of nanoparticles from experimental images. The gain in speed compared to conventional retrieval techniques opens the route for automated structure reconstruction algorithms capable of real-time discrimination and pre-identification of nanostructures in scattering experiments with high repetition rate—thus representing the enabling technology for fast femtosecond nanocrystallography.
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18
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Fruhwirth V, Enzinger C, Fandler-Höfler S, Kneihsl M, Eppinger S, Ropele S, Schmidt R, Gattringer T, Pinter D. Baseline white matter hyperintensities affect the course of cognitive function after small vessel disease-related stroke: a prospective observational study. Eur J Neurol 2020; 28:401-410. [PMID: 33065757 PMCID: PMC7839458 DOI: 10.1111/ene.14593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Background and purpose Cognitive impairment is a common sequel of recent small subcortical infarction (RSSI) and might be negatively affected by preexisting cerebral small vessel disease (SVD). We investigated whether the course of cognitive function in patients with RSSI is influenced by the severity of white matter hyperintensities (WMH), an important imaging feature of SVD. Methods Patients with magnetic resonance imaging (MRI)‐proven single RSSI were tested neuropsychologically concerning global cognition, processing speed, attention, and set‐shifting. Deep and periventricular WMH severity was assessed using the Fazekas scale, and total WMH lesion volume was calculated from T1‐weighted MRI images. We compared baseline function and course of cognition 15 months after the acute event in patients with absent, mild, and moderate‐to‐severe WMH. Results The study cohort comprised 82 RSSI patients (mean age: 61 ± 10 years, 23% female). At baseline, 40% had cognitive impairment (1.5 standard deviations below standardized mean), and deficits persisted in one‐third of the sample after 15 months. After age correction, there were no significant differences in set‐shifting between WMH groups at baseline. However, although patients without WMH (deep: p < 0.001, periventricular: p = 0.067) or only mild WMH (deep: p = 0.098, periventricular: p = 0.001) improved in set‐shifting after 15 months, there was no improvement in patients with moderate‐to‐severe WMH (deep: p = 0.980, periventricular: p = 0.816). Baseline total WMH volume (p = 0.002) was the only significant predictor for attention 15 months poststroke. Conclusions This longitudinal study demonstrates that preexisting moderate‐to‐severe WMH negatively affect the restoration of cognitive function after RSSI, suggesting limited functional reserve in patients with preexisting SVD.
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Affiliation(s)
- V Fruhwirth
- Department of Neurology, Medical University of Graz, Graz, Austria.,Research Unit for Neuronal Plasticity and Repair, Medical University of Graz, Graz, Austria
| | - C Enzinger
- Department of Neurology, Medical University of Graz, Graz, Austria.,Research Unit for Neuronal Plasticity and Repair, Medical University of Graz, Graz, Austria.,Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - S Fandler-Höfler
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - M Kneihsl
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - S Eppinger
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - S Ropele
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - R Schmidt
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - T Gattringer
- Department of Neurology, Medical University of Graz, Graz, Austria.,Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - D Pinter
- Department of Neurology, Medical University of Graz, Graz, Austria.,Research Unit for Neuronal Plasticity and Repair, Medical University of Graz, Graz, Austria
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19
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Frederiksen KS, Cooper C, Frisoni GB, Frölich L, Georges J, Kramberger MG, Nilsson C, Passmore P, Mantoan Ritter L, Religa D, Schmidt R, Stefanova E, Verdelho A, Vandenbulcke M, Winblad B, Waldemar G. A European Academy of Neurology guideline on medical management issues in dementia. Eur J Neurol 2020; 27:1805-1820. [PMID: 32713125 PMCID: PMC7540303 DOI: 10.1111/ene.14412] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE Dementia is one of the most common disorders and is associated with increased morbidity, mortality and decreased quality of life. The present guideline addresses important medical management issues including systematic medical follow-up, vascular risk factors in dementia, pain in dementia, use of antipsychotics in dementia and epilepsy in dementia. METHODS A systematic review of the literature was carried out. Based on the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) framework, we developed a guideline. Where recommendations based on GRADE were not possible, a good practice statement was formulated. RESULTS Systematic management of vascular risk factors should be performed in patients with mild to moderate dementia as prevention of cerebrovascular pathology may impact on the progression of dementia (Good Practice statement). Individuals with dementia (without previous stroke) and atrial fibrillation should be treated with anticoagulants (weak recommendation). Discontinuation of opioids should be considered in certain individuals with dementia (e.g. for whom there are no signs or symptoms of pain or no clear indication, or suspicion of side effects; Good Practice statement). Behavioral symptoms in persons with dementia should not be treated with mild analgesics (weak recommendation). In all patients with dementia treated with opioids, assessment of the individual risk-benefit ratio should be performed at regular intervals. Regular, preplanned medical follow-up should be offered to all patients with dementia. The setting will depend on the organization of local health services and should, as a minimum, include general practitioners with easy access to dementia specialists (Good Practice statement). Individuals with dementia and agitation and/or aggression should be treated with atypical antipsychotics only after all non-pharmacological measures have been proven to be without benefit or in the case of severe self-harm or harm to others (weak recommendation). Antipsychotics should be discontinued after cessation of behavioral disturbances and in patients in whom there are side effects (Good Practice statement). For treatment of epilepsy in individuals with dementia, newer anticonvulsants should be considered as first-line therapy (Good Practice statement). CONCLUSION This GRADE-based guideline offers recommendations on several important medical issues in patients with dementia, and thus adds important guidance for clinicians. For some issues, very little or no evidence was identified, highlighting the importance of further studies within these areas.
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Affiliation(s)
- K. S. Frederiksen
- Department of NeurologyDanish Dementia Research CenterRigshospitaletUniversity of CopenhagenCopenhagenDenmark
| | - C. Cooper
- Department of Clinical Educational and Health PsychologyUniversity College LondonLondonUK
| | - G. B. Frisoni
- Memory ClinicUniversity Hospital of GenevaUniversity of GenevaGenevaSwitzerland
| | - L. Frölich
- Department of Geriatric PsychiatryZentralinstitut für Seelische Gesundheit MannheimMedical Faculty MannheimUniversity of HeidelbergMannheimGermany
| | | | - M. G. Kramberger
- Department of NeurologyCenter for Cognitive ImpairmentsUniversity Medical Center Ljubljana, and Medical facultyUniversity of LjubljanaLjubljanaSlovenia
| | - C. Nilsson
- Department of Neurology and Rehabilitation MedicineSkåne University HospitalLundSweden
- Clinical Memory Research UnitDepartment of Clinical SciencesLund UniversityMalmöSweden
| | | | - L. Mantoan Ritter
- Epilepsy CentreKing's College NHS Foundation TrustKing´s College LondonLondonUK
| | - D. Religa
- Division of Clinical GeriatricsDepartment of Neurobiology, Care Sciences and SocietyKarolinska InstitutetNeo, StockholmSweden
- Karolinska University HospitalTheme AgingHuddingeSweden
| | - R. Schmidt
- University Clinic for NeurologyMedical University of GrazGrazAustria
| | - E. Stefanova
- Medical FacultyNeurology clinic CCSUniversity of BelgradeBelgradeSerbia
| | - A. Verdelho
- Department of Neurosciences and Mental HealthCHLNorte‐Hospital de Santa MariaIMMISAMBFaculty of MedicineUniversity of LisbonLisbonPortugal
| | - M. Vandenbulcke
- Department of NeurosciencesKU LeuvenGeriatric PsychiatryUniversity Hospitals LeuvenLeuvenBelgium
| | - B. Winblad
- Karolinska University HospitalTheme AgingHuddingeSweden
- Division of NeurogeriatricsDepartment of Neurobiology, Care Sciences and SocietyKarolinska InstitutetBioClinicumSolnaSweden
| | - G. Waldemar
- Department of NeurologyDanish Dementia Research CenterRigshospitaletUniversity of CopenhagenCopenhagenDenmark
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20
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Sogkas G, Hirsch S, Olsson K, Schmidt R, Witte T, Jabonka A, Ernst D. THU0263 LUNG INVOLVEMENT IN PRIMARY SJÖGREN SYNDROME – AN UNDER-DIAGNOSED ENTITY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Interstitial lung disease (ILD) represents a frequent extra-glandular manifestation of primary Sjögren’s Syndrome (pSS). Limited published data regarding phenotyping and treatment exists. Advances in managing specific ILD phenotypes have not been comprehensively explored in patients with coexisting pSS.Objectives:This retrospective study aimed to phenotype lung diseases occurring in a well-described pSS cohort and describe treatment course and outcomes.Methods:Between April 2018 and September 2019, all pSS patients attending our Outpatient clinic were screened for possible lung involvement. Clinical, laboratory and computer tomography (CT) findings were analysed. Patients were classified according to CT findings into 5 groups: usual interstitial pneumonia (UIP), non-specific interstitial pneumonia (NSIP), desquamative interstitial pneumonia (DIP), combined pulmonary fibrosis and emphysema (CPFE) and unspecific-ILD.Results:Lung involvement was confirmed in 24/240 patients (10%). Clinically manifest pSS occurred later in patients with ILD vs. non-ILD (53.2 [42.0-61.7]vs.62.3 [55.6-68.8] years; p=0.0016). The commonest phenotype was UIP n=10 (41%), followed by NSIP n=7 (29%), DIP n=2 (8%), CPFE n=2 (8%) and unspecific-ILD n=3 (13%). Forced vital capacity (FVC) and carbon monoxide diffusion capacity (DLCO) appeared lower in UIP and DIP, without reaching a significant difference. Treatment focused universally on intensified immunosuppression, with 12/24 patients (50%) receiving cyclophosphamide. No anti-fibrotic treatments were used. Follow-up was median 13.2 [7.9-72.3] months, during which 6/24 (25%) patients exhibited a further decline in FVC. No deaths occurred.Conclusion:Lung involvement in pSS is heterogeneous. Better phenotyping and tailored treatment may improve outcomes and requires further evaluation in larger prospective studies.Disclosure of Interests:None declared
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21
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Smari M, Hamdi R, Prado-Gonjal J, Cortés-Gil R, Dhahri E, Mompean F, García-Hernández M, Schmidt R. Magnetoimpedance spectroscopy of phase-separated La 0.5Ca 0.5MnO 3 polycrystalline manganites. Phys Chem Chem Phys 2020; 22:11625-11636. [PMID: 32405632 DOI: 10.1039/d0cp00794c] [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: 11/21/2022]
Abstract
Magnetoimpedance spectroscopy was carried out on phase-separated La0.5Ca0.5MnO3 polycrystalline manganites. The La0.5Ca0.5MnO3 powder was synthesized following an adapted sol-gel route. Structural and magnetic data showed the signs of phase coexistence of ferromagnetic (FM) Pnma and charge-ordered antiferromagnetic (CO-AFM) P21/m phases. Magnetization vs. temperature (M vs. T) measurements revealed several magnetic transitions from the high temperature paramagnetic (PM) to an FM phase upon cooling (PM-FM) at ≈240 K, FM-AFM (≈170 K) and AFM-FM (≈100 K). Magnetic field (H)-dependent impedance spectroscopy data were collected from sintered pellets and fitted with an equivalent circuit model to separately analyze the different dielectric contributions from the grain boundary (GB) and the grain interior bulk areas. This allowed separating the GB and bulk magnetoresistance (MR), which was shown to amount to a maximum of ≈80% for both GB and bulk at H = 10 T near the metal-insulator transition (MIT) at ≈100 K. The GB resistance was found to be larger than the bulk resistance by a factor of ≈3, which implies that the direct current (DC) resistance and DC MR are dominated by contributions from the GBs. The magnetocapacitance (MC) effects detected were all found to be small below ≈3%, including in the presence of a CO phase.
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Affiliation(s)
- Mourad Smari
- CICECO, Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal.
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22
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Ferretti MT, Martinkova J, Biskup E, Benke T, Gialdini G, Nedelska Z, Rauen K, Mantua V, Religa D, Hort J, Santuccione Chadha A, Schmidt R. Sex and gender differences in Alzheimer's disease: current challenges and implications for clinical practice: Position paper of the Dementia and Cognitive Disorders Panel of the European Academy of Neurology. Eur J Neurol 2020; 27:928-943. [PMID: 32056347 DOI: 10.1111/ene.14174] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 02/11/2020] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD) is characterized by high heterogeneity in disease manifestation, progression and risk factors. High phenotypic variability is currently regarded as one of the largest hurdles in early diagnosis and in the design of clinical trials; there is therefore great interest in identifying factors driving variability that can be used for patient stratification. In addition to genetic and lifestyle factors, the individual's sex and gender are emerging as crucial drivers of phenotypic variability. Evidence exists on sex and gender differences in the rate of cognitive deterioration and brain atrophy, and in the effect of risk factors as well as in the patterns of diagnostic biomarkers. Such evidence might be of high relevance and requires attention in clinical practice and clinical trials. However, sex and gender differences are currently seldom appreciated; importantly, consideration of sex and gender differences is not currently a focus in the design and analysis of clinical trials for AD. The objective of this position paper is (i) to provide an overview of known sex and gender differences that might have implications for clinical practice, (ii) to identify the most important knowledge gaps in the field (with a special regard to clinical trials) and (iii) to provide conclusions for future studies. This scientific statement is endorsed by the European Academy of Neurology.
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Affiliation(s)
- M T Ferretti
- Institute for Regenerative Medicine - IREM, University of Zurich, Zurich, Switzerland.,Women's Brain Project, Guntershausen, Switzerland
| | - J Martinkova
- Memory Clinic, Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic
| | - E Biskup
- College of Fundamental Medicine, Shanghai University of Medicine and Health Sciences, Shanghai, China.,Division of Internal Medicine, University Hospital of Basel, Basel, Switzerland
| | - T Benke
- Neurology Clinic, Medical University Innsbruck, Innsbruck, Austria
| | - G Gialdini
- Neurology - Private Practice, Lucca, Italy
| | - Z Nedelska
- Memory Clinic, Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St Anne's University Hospital Brno, Brno, Czech Republic
| | - K Rauen
- Institute for Regenerative Medicine - IREM, University of Zurich, Zurich, Switzerland.,Women's Brain Project, Guntershausen, Switzerland.,Department of Geriatric Psychiatry, University Hospital of Psychiatry Zurich, Zurich, Switzerland
| | - V Mantua
- Italian Medicines Agency, Rome, Italy
| | - D Religa
- Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institutet, Stockholm, Sweden
| | - J Hort
- Memory Clinic, Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St Anne's University Hospital Brno, Brno, Czech Republic
| | - A Santuccione Chadha
- Women's Brain Project, Guntershausen, Switzerland.,Global Medical and Scientific Affairs, Roche Diagnostics International Ltd, Rotkreuz, Switzerland
| | - R Schmidt
- Department of Neurogeriatrics, University Clinic of Neurology, Medical University Graz, Graz, Austria
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Möhring M, Schmidt R, Keller B, Sandkuhl K, Zimmermann A. Predictive Maintenance Information Systems. International Journal of Enterprise Information Systems 2020. [DOI: 10.4018/ijeis.2020040102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Predictive maintenance has the potential to improve the reliability of production and service provisioning. However, there is little knowledge about the proper implementation of predictive maintenance in research and practice. Therefore, we conducted a multi-case study and investigated underlying conditions and technological aspects for implementing a predictive maintenance system and where it leads to. We found that predictive maintenance initiatives are triggered by severe impacts of failures on revenue and profit. Furthermore, successful predictive maintenance initiatives require that pre-conditions are fulfilled: Data must be available and accessible. Very important is also the support by the management. We identified four factors important for the implementation of predictive maintenance. The integration of data is highly facilitated by Cloud-based mechanisms. The detection of events is enabled by advanced analytics. The execution of predictive maintenance operations is supported by data-driven process automation and visualization.
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24
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Wattenburger K, Schmidt R, Placheta L, Middleton JR, Adkins PRF. Evaluation of 4 different teat disinfection methods prior to collection of milk samples for bacterial culture in dairy cattle. J Dairy Sci 2020; 103:4579-4587. [PMID: 32147259 DOI: 10.3168/jds.2019-17338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/20/2019] [Indexed: 11/19/2022]
Abstract
The first objective of this study was to determine whether differences would occur among teat end preparation techniques with regard to potential contamination of milk samples collected for bacterial culture. The second objective was to determine whether differences would be detected in genus or species of bacteria isolated from samples collected using the various methods as well as from contaminated or uncontaminated samples. Mammary quarter foremilk samples were collected from lactating dairy cattle at the University of Missouri Foremost Research Dairy Farm (Columbia). Four different teat end preparation methods were used to compare contamination rates in milk samples. Sampling techniques used before milk collection included (1) no preparation, (2) pre-milking disinfection and single-use towel drying of teats only, (3) scrubbing of the teat end with alcohol only, and (4) pre-milking disinfection, single-use towel drying, and scrubbing of the teat end with alcohol. Milk was plated on Columbia blood agar. Cultures were read at 48 h, with the number of morphologically different bacterial colony types quantified and isolated. Isolates were identified using MALDI-TOF mass spectrometry. Median numbers of colony types were compared among groups using Kruskal-Wallis ANOVA with post-hoc pairwise comparisons, and proportional data were compared using the chi-squared test. A total of 168 cows, including 665 quarters, were sampled, and 1,614 isolates resulted. Analysis with MALDI-TOF identified 29 unique genera and 81 unique species among the samples. More contaminated samples occurred in groups 1 and 2 compared with groups 3 and 4. Group 3 had more contaminated samples than group 4. The majority of Pseudomonas spp. isolates were identified within group 2. When applying previously described niches to Staphylococcus spp., environmental species were more likely to be identified among contaminated samples, whereas host-adapted species were more likely to be identified among uncontaminated samples. These data confirm that scrubbing the teat end with alcohol after pre-milking disinfection with an iodine-based teat disinfectant and drying of the teat minimizes contamination of the milk sample.
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Affiliation(s)
- K Wattenburger
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia 65211
| | - R Schmidt
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia 65211
| | - L Placheta
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia 65211
| | - J R Middleton
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia 65211
| | - P R F Adkins
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia 65211.
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Frid P, Drake M, Giese AK, Wasselius J, Schirmer MD, Donahue KL, Cloonan L, Irie R, Bouts MJRJ, McIntosh EC, Mocking SJT, Dalca AV, Sridharan R, Xu H, Giralt-Steinhauer E, Holmegaard L, Jood K, Roquer J, Cole JW, McArdle PF, Broderick JP, Jimenez-Conde J, Jern C, Kissela BM, Kleindorfer DO, Lemmens R, Meschia JF, Rundek T, Sacco RL, Schmidt R, Sharma P, Slowik A, Thijs V, Woo D, Worrall BB, Kittner SJ, Mitchell BD, Petersson J, Rosand J, Golland P, Wu O, Rost NS, Lindgren A. Detailed phenotyping of posterior vs. anterior circulation ischemic stroke: a multi-center MRI study. J Neurol 2020; 267:649-658. [PMID: 31709475 PMCID: PMC7035231 DOI: 10.1007/s00415-019-09613-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Posterior circulation ischemic stroke (PCiS) constitutes 20-30% of ischemic stroke cases. Detailed information about differences between PCiS and anterior circulation ischemic stroke (ACiS) remains scarce. Such information might guide clinical decision making and prevention strategies. We studied risk factors and ischemic stroke subtypes in PCiS vs. ACiS and lesion location on magnetic resonance imaging (MRI) in PCiS. METHODS Out of 3,301 MRIs from 12 sites in the National Institute of Neurological Disorders and Stroke (NINDS) Stroke Genetics Network (SiGN), we included 2,381 cases with acute DWI lesions. The definition of ACiS or PCiS was based on lesion location. We compared the groups using Chi-squared and logistic regression. RESULTS PCiS occurred in 718 (30%) patients and ACiS in 1663 (70%). Diabetes and male sex were more common in PCiS vs. ACiS (diabetes 27% vs. 23%, p < 0.05; male sex 68% vs. 58%, p < 0.001). Both were independently associated with PCiS (diabetes, OR = 1.29; 95% CI 1.04-1.61; male sex, OR = 1.46; 95% CI 1.21-1.78). ACiS more commonly had large artery atherosclerosis (25% vs. 20%, p < 0.01) and cardioembolic mechanisms (17% vs. 11%, p < 0.001) compared to PCiS. Small artery occlusion was more common in PCiS vs. ACiS (20% vs. 14%, p < 0.001). Small artery occlusion accounted for 47% of solitary brainstem infarctions. CONCLUSION Ischemic stroke subtypes differ between the two phenotypes. Diabetes and male sex have a stronger association with PCiS than ACiS. Definitive MRI-based PCiS diagnosis aids etiological investigation and contributes additional insights into specific risk factors and mechanisms of injury in PCiS.
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Affiliation(s)
- Petrea Frid
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden.
- Department of Neurology and Rehabilitation Medicine, Neurology, Skåne University Hospital, Malmö, Sweden.
- Department of Neurology, Skåne University Hospital, Jan Waldenströms gata 19, 205 02, Malmö, Sweden.
| | - Mattias Drake
- Department of Clinical Sciences Lund, Radiology, Lund University, Lund, Sweden
- Department of Radiology, Neuroradiology, Skåne University Hospital, Lund, Sweden
| | - A K Giese
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - J Wasselius
- Department of Clinical Sciences Lund, Radiology, Lund University, Lund, Sweden
- Department of Radiology, Neuroradiology, Skåne University Hospital, Lund, Sweden
| | - M D Schirmer
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
- Department of Population Health Sciences, German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - K L Donahue
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - L Cloonan
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - R Irie
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - M J R J Bouts
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - E C McIntosh
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - S J T Mocking
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - A V Dalca
- Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - R Sridharan
- Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
| | - H Xu
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - E Giralt-Steinhauer
- Neurovascular Research Group (NEUVAS), Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - L Holmegaard
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - K Jood
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - J Roquer
- Neurovascular Research Group (NEUVAS), Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J W Cole
- Department of Neurology, University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - P F McArdle
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - J P Broderick
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - J Jimenez-Conde
- Neurovascular Research Group (NEUVAS), Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - C Jern
- Institute of Biomedicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - B M Kissela
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - D O Kleindorfer
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - R Lemmens
- Department of Neurosciences, Experimental Neurology, KU Leuven-University of Leuven, Louvain, Belgium
- VIB Center for Brain and Disease Research, Louvain, Belgium
- Department of Neurology, University Hospitals Leuven, Louvain, Belgium
| | - J F Meschia
- Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | - T Rundek
- Department of Neurology and Evelyn F. McKnight Brain Institute, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - R L Sacco
- Department of Neurology and Evelyn F. McKnight Brain Institute, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - R Schmidt
- Clinical Division of Neurogeriatrics, Department of Neurology, Medical University Graz, Graz, Austria
| | - P Sharma
- Institute of Cardiovascular Research, Royal Holloway University of London (ICR2UL), Egham, UK
- Ashford and St Peter's Hospital, Ashford, UK
| | - A Slowik
- Department of Neurology, Jagiellonian University Medical College, Kraków, Poland
| | - V Thijs
- Stroke Division, Florey Institute of Neuroscience and Mental Health, Heidelberg, Australia
- Department of Neurology, Austin Health, Heidelberg, Australia
| | - D Woo
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - B B Worrall
- Department of Neurology, University of Virginia, Charlottesville, VA, USA
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - S J Kittner
- Department of Neurology, University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - B D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Geriatric Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, MD, USA
| | - J Petersson
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
- Department of Neurology and Rehabilitation Medicine, Neurology, Skåne University Hospital, Malmö, Sweden
| | - J Rosand
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
- Center for Genomic Research, Massachusetts General Hospital, Boston, MA, USA
- Division of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - P Golland
- Computer Science and Artificial Intelligence Laboratory, MIT, Cambridge, USA
| | - O Wu
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital (MGH), Harvard Medical School, Charlestown, MA, USA
| | - N S Rost
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - A Lindgren
- Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
- Department of Neurology and Rehabilitation Medicine, Neurology, Skåne University Hospital, Lund, Sweden
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Bartram U, Schmidt R. [Transdermal intoxication through broken opioid ampules : Accidental intoxication in a paramedic]. Anaesthesist 2020; 69:122-125. [PMID: 32002562 DOI: 10.1007/s00101-020-00732-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/30/2019] [Accepted: 01/03/2020] [Indexed: 10/25/2022]
Abstract
This article presents the case of an accidental transdermal opioid intoxication in a paramedic. During an ambulance flight mission for patient repatriation several ampules containing opioids were broken unnoticed inside the ampule kit in the outside pocket of the work trousers of the paramedic. He developed the typical clinical picture of opioid intoxication with clouding of consciousness, miosis, and respiratory depression. This necessitated continuous monitoring of vital signs as well as repetitive administration of naloxone under the improvised circumstances of a mission abroad.
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Affiliation(s)
- U Bartram
- Klinik für Anästhesiologie, operative Intensivmedizin und Schmerzmedizin, Marienhospital Stuttgart, Böheimstr. 37, 70199, Stuttgart, Deutschland.
| | - R Schmidt
- Klinik für Anästhesiologie, operative Intensivmedizin und Schmerzmedizin, Marienhospital Stuttgart, Böheimstr. 37, 70199, Stuttgart, Deutschland
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27
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Berthold F, Faldum A, Ernst A, Boos J, Dilloo D, Eggert A, Fischer M, Frühwald M, Henze G, Klingebiel T, Kratz C, Kremens B, Krug B, Leuschner I, Schmidt M, Schmidt R, Schumacher-Kuckelkorn R, von Schweinitz D, Schilling FH, Theissen J, Volland R, Hero B, Simon T. Extended induction chemotherapy does not improve the outcome for high-risk neuroblastoma patients: results of the randomized open-label GPOH trial NB2004-HR. Ann Oncol 2020; 31:422-429. [PMID: 32067684 DOI: 10.1016/j.annonc.2019.11.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Long-term survival of high-risk neuroblastoma patients is still below 50% despite intensive multimodal treatment. This trial aimed to address whether the addition of two topotecan-containing chemotherapy courses compared to standard induction therapy improves event-free survival (EFS) of these patients. PATIENTS AND METHODS An open-label, multicenter, prospective randomized controlled trial was carried out at 58 hospitals in Germany and Switzerland. Patients aged 1-21 years with stage 4 neuroblastoma and patients aged 6 months to 21 years with MYCN-amplified tumors were eligible. The primary endpoint was EFS. Patients were randomly assigned to standard induction therapy with six chemotherapy courses or to experimental induction chemotherapy starting with two additional courses of topotecan, cyclophosphamide, and etoposide followed by standard induction chemotherapy (eight courses in total). After induction chemotherapy, all patients received high-dose chemotherapy with autologous hematopoietic stem cell rescue and isotretinoin for consolidation. Radiotherapy was applied to patients with active tumors at the end of induction chemotherapy. RESULTS Of 536 patients enrolled in the trial, 422 were randomly assigned to the control arm (n = 211) and the experimental arm (n = 211); the median follow-up time was 3.32 years (interquartile range 1.65-5.92). At data lock, the 3-year EFS of experimental and control patients was 34% and 32% [95% confidence Interval (CI) 28% to 40% and 26% to 38%; P = 0.258], respectively. Similarly, the 3-year overall survival of the patients did not differ [54% and 48% (95% CI 46% to 62% and 40% to 56%), respectively; P = 0.558]. The response to induction chemotherapy was not different between the arms. The median number of non-fatal toxicities per patient was higher in the experimental group while the median number of toxicities per chemotherapy course was not different. CONCLUSION While the burden for the patients was increased by prolonging the induction chemotherapy and the toxicity, the addition of two topotecan-containing chemotherapy courses did not improve the EFS of high-risk neuroblastoma patients and thus cannot be recommended. CLINICAL TRIALS. GOV NUMBER NCT number 03042429.
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Affiliation(s)
- F Berthold
- Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany.
| | - A Faldum
- Institute of Medical Statistics and Clinical Research, University of Muenster, Muenster, Germany
| | - A Ernst
- Institute of Medical Statistics and Computational Biology (IMSB), University of Cologne, Cologne, Germany
| | - J Boos
- Department of Pediatric Oncology and Hematology, University of Muenster, Muenster, Germany
| | - D Dilloo
- Department of Pediatric Oncology and Hematology, University of Bonn, Bonn, Germany
| | - A Eggert
- Department of Pediatric Oncology and Hematology, Charité Universitätsmedizin Berlin and Berlin Institute of Health, Berlin, Germany
| | - M Fischer
- Department of Experimental Pediatric Oncology and Center for Molecular Medicine, Medical Faculty, University of Cologne, Cologne, Germany
| | - M Frühwald
- Swabian Children's Cancer Center, Children's Hospital, University Hospital Augsburg, Augsburg, Germany
| | - G Henze
- Department of Pediatric Oncology and Hematology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - T Klingebiel
- Department of Children and Adolescents, University Hospital, Goethe University Frankfurt (Main), Frankfurt am Main, Germany
| | - C Kratz
- Department of Pediatric Oncology and Hematology, Medicinal University, Hannover, Germany
| | - B Kremens
- Department of Pediatric Oncology and Hematology, University of Essen, Essen, Germany
| | - B Krug
- Institute of Diagnostic and Interventional Radiology, University of Cologne, Cologne, Germany
| | - I Leuschner
- Children's Tumor Registry, Institute of Pathology, University of Kiel, Kiel, Germany
| | - M Schmidt
- Department of Nuclear Medicine, University of Cologne, Cologne, Germany
| | - R Schmidt
- Institute of Medical Statistics and Clinical Research, University of Muenster, Muenster, Germany
| | | | - D von Schweinitz
- Department of Pediatric Surgery, University of Munich, Munich, Germany
| | - F H Schilling
- Department of Pediatric Oncology and Hematology, Olgahospital Stuttgart, Stuttgart, Germany
| | - J Theissen
- Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
| | - R Volland
- Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
| | - B Hero
- Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
| | - T Simon
- Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
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28
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Klein J, Lorke M, Florian M, Sigger F, Sigl L, Rey S, Wierzbowski J, Cerne J, Müller K, Mitterreiter E, Zimmermann P, Taniguchi T, Watanabe K, Wurstbauer U, Kaniber M, Knap M, Schmidt R, Finley JJ, Holleitner AW. Site-selectively generated photon emitters in monolayer MoS 2 via local helium ion irradiation. Nat Commun 2019; 10:2755. [PMID: 31227692 PMCID: PMC6588625 DOI: 10.1038/s41467-019-10632-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/22/2019] [Indexed: 11/08/2022] Open
Abstract
Quantum light sources in solid-state systems are of major interest as a basic ingredient for integrated quantum photonic technologies. The ability to tailor quantum emitters via site-selective defect engineering is essential for realizing scalable architectures. However, a major difficulty is that defects need to be controllably positioned within the material. Here, we overcome this challenge by controllably irradiating monolayer MoS2 using a sub-nm focused helium ion beam to deterministically create defects. Subsequent encapsulation of the ion exposed MoS2 flake with high-quality hBN reveals spectrally narrow emission lines that produce photons in the visible spectral range. Based on ab-initio calculations we interpret these emission lines as stemming from the recombination of highly localized electron-hole complexes at defect states generated by the local helium ion exposure. Our approach to deterministically write optically active defect states in a single transition metal dichalcogenide layer provides a platform for realizing exotic many-body systems, including coupled single-photon sources and interacting exciton lattices that may allow the exploration of Hubbard physics.
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Affiliation(s)
- J Klein
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany.
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany.
| | - M Lorke
- Institut für Theoretische Physik, Universität Bremen, P.O. Box 330 440,, 28334, Bremen, Germany
- Bremen Center for Computational Materials Science, University of Bremen, Am Fallturm 1, 28359, Bremen, Germany
| | - M Florian
- Institut für Theoretische Physik, Universität Bremen, P.O. Box 330 440,, 28334, Bremen, Germany
| | - F Sigger
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany
| | - L Sigl
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - S Rey
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - J Wierzbowski
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - J Cerne
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - K Müller
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - E Mitterreiter
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - P Zimmermann
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - T Taniguchi
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
| | - K Watanabe
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
| | - U Wurstbauer
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany
| | - M Kaniber
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany
| | - M Knap
- Department of Physics and Institute for Advanced Study, Technical University of Munich, 85748, Garching, Germany
| | - R Schmidt
- Max-Planck-Institut für Quantenoptik, 85748, Garching, Germany
| | - J J Finley
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany.
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany.
| | - A W Holleitner
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany.
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799, Munich, Germany.
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Accorsi G, Reis R, Schmidt R, Nobrega L, Beolchi A, Vieira M, Andrade C. Surgical morbidity associated with learning curve of sentinel lymph node technique in early stage cervical cancer treatment. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.334] [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: 10/26/2022]
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Vernooij MW, Pizzini FB, Schmidt R, Smits M, Yousry TA, Bargallo N, Frisoni GB, Haller S, Barkhof F. Dementia imaging in clinical practice: a European-wide survey of 193 centres and conclusions by the ESNR working group. Neuroradiology 2019; 61:633-642. [PMID: 30852630 PMCID: PMC6511357 DOI: 10.1007/s00234-019-02188-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 02/12/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE Through a European-wide survey, we assessed the current clinical practice of imaging in the primary evaluation of dementia, with respect to standardised imaging, evaluation and reporting. METHODS An online questionnaire was emailed to all European Society of Neuroradiology (ESNR) members (n = 1662) and non-members who had expressed their interest in ESNR activities in the past (n = 6400). The questionnaire featured 42 individual items, divided into multiple choice, single best choice and free text answers. Information was gathered on the context of the practices, available and preferred imaging modalities, applied imaging protocols and standards for interpretation, reporting and communication. RESULTS A total of 193 unique (non-duplicate) entries from the European academic and non-academic institutions were received from a total of 28 countries. Of these, 75% were neuroradiologists, 12% general radiologists and 11% (neuro) radiologists in training. Of responding centres, 38% performed more than five scans/week for suspected dementia. MRI was primarily used in 72% of centres. Over 90% of centres acquired a combination of T2w, FLAIR, T1w, DWI and T2*w sequences. Visual rating scales were used in 75% of centres, most often the Fazekas and medial temporal atrophy scale; 32% of respondents lacked full confidence in their use. Only 23% of centres performed volumetric analysis. A minority of centres (28%) used structured reports. CONCLUSIONS Current practice in dementia imaging is fairly homogeneous across Europe, in terms of image acquisition and image interpretation. Hurdles identified include training on the use of visual rating scales, implementation of volumetric assessment and structured reporting.
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Affiliation(s)
- M W Vernooij
- Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
| | - F B Pizzini
- Neuroradiology, Department of Diagnostics and Pathology, Verona University Hospital, Verona, Italy
| | - R Schmidt
- Department of Neurology, Clinical Division of Neurogeriatrics, Medical University Graz, Graz, Austria
| | - M Smits
- Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - T A Yousry
- Lysholm Department of Neuroradiology, UCL Institute of Neurology, London, UK
| | - N Bargallo
- Magnetic Resonance Image Core Facility, IDIBAPS and Center of Diagnostic Image (CDIC), Hospital Clinic, Barcelona, Spain
| | - G B Frisoni
- University Hospitals and University of Geneva, Geneva, Switzerland
| | - S Haller
- CIRD - Centre d'Imagerie Rive Droite|, Geneva, Switzerland
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden
- Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - F Barkhof
- Lysholm Department of Neuroradiology, UCL Institute of Neurology, London, UK
- Department of Radiology and Nuclear Medicine, VU University Medical Centre, Amsterdam UMC, Amsterdam, The Netherlands
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Castro B, Mengatto MF, Vieira M, Andrade C, Cintra G, Tsunoda A, Schmidt R, Reis R. Evaluation of early removal of indwelling urinary catheter (IDUC) after radical surgery in cervical cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.658] [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: 10/26/2022]
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32
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Joos A, Leiprecht N, Wiesand K, Schmidt R, Hartmann A. Integrated inpatient rehabilitation for patients with Functional Neurological Symptom Disorder (FNSD) - A specific group therapy. J Psychosom Res 2019; 120:102-104. [PMID: 30929699 DOI: 10.1016/j.jpsychores.2019.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 11/16/2022]
Affiliation(s)
- A Joos
- Kliniken Schmieder, Departments of Psychotherapeutic Neurology in Gailingen and Konstanz, Auf dem Berg, 78262 Gailingen, Germany; Department of Psychosomatic Medicine and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 8, 79104 Freiburg, Germany.
| | - N Leiprecht
- Kliniken Schmieder, Departments of Psychotherapeutic Neurology in Gailingen and Konstanz, Auf dem Berg, 78262 Gailingen, Germany
| | - K Wiesand
- Kliniken Schmieder, Departments of Psychotherapeutic Neurology in Gailingen and Konstanz, Auf dem Berg, 78262 Gailingen, Germany
| | - R Schmidt
- Kliniken Schmieder, Departments of Psychotherapeutic Neurology in Gailingen and Konstanz, Auf dem Berg, 78262 Gailingen, Germany
| | - A Hartmann
- Department of Psychosomatic Medicine and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 8, 79104 Freiburg, Germany
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Katzendobler S, Haunreiter L, Zander L, Schmidt R, Andrulat A, Münch K, Hanusch C, Napieralski R, Petri I, Ettl J. Abstract OT1-05-05: REASSURE- Effects of Reiki as supportive treatment during chemotherapy of breast cancer: A prospective, randomized, controlled clinical trial. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot1-05-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Every seventh to eighth woman is diagnosed with breast cancer in her life. Next to surgery and radiotherapy most of them receive (neo)adjuvant chemotherapy, which comes along with adverse effects. Complementary and alternative medicine (CAM) like Reiki can reduce these effects. Reiki is a Far Eastern method that promotes healing on a physical, mental and emotional level and activates self-healing powers. REASSURE examines the effects of Reiki on quality of life and taxane-induced polyneuropathy during chemotherapy.
Methods: REASSURE is a prospective, randomized, controlled, two-armed clinical trial, in which patients with breast cancer receive chemotherapy and Reiki (18 times) or chemotherapy and sport (18 times). During chemotherapy and before and after every Reiki- or sport-session the patients fill out standardized questionnaires (e.g. FACT/GOG-NTX Version 4). Primary endpoint is the comparison of quality of life at the end of chemotherapy between Reiki and sport based on the FACT/GOG-NTX score by T-Test. Secondary endpoint is the comparison of the taxane-induced polyneuropathy at the end of chemotherapy between the two groups. Also short-term effects before and after the Reiki- and sport-session will be examined. A power of 1-β = 0.8, a bilateral probability of error of α = 0.05, a minimum relevant difference deltaθ = 4 and a pooled standard deviation of 11 for the two-sided T-Test result in case numbers of 2 x 120 = 240 patients.
Conclusion: REASSURE is the most comprehensive prospective study to the effects and the feasibility of Reiki on breast cancer patients during chemotherapy so far.
Since July 2015, 138 patients have been enrolled at three different centers. Currently 63 patients in total (39 patients of the Reiki-group and 24 patients of the sport-group) have completed the study. 24 Reiki-patients and 36 sport-patients are counted as dropouts because of reasons like incomplete data records, discontinuation of chemotherapy, not enough time or energy for Reiki- or sport-sessions or other reasons.
Sponsor: This is a collaborative study of the Department of Obstetrics and Gynecology, Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany, Rotkreuzklinikum München, Frauenklinik, Munich, Germany, Department of Gynaecology, Städtisches Klinikum München Harlaching, Munich, Germany and the ProReiki – der Berufsverband e.V., Berlin, Germany.
Contact Information: For further information contact Sophie Katzendobler via sophie.katzendobler@gmail.com or the leading physician Dr. Johannes Ettl via johannes.ettl@tum.de.
Citation Format: Katzendobler S, Haunreiter L, Zander L, Schmidt R, Andrulat A, Münch K, Hanusch C, Napieralski R, Petri I, Ettl J. REASSURE- Effects of Reiki as supportive treatment during chemotherapy of breast cancer: A prospective, randomized, controlled clinical trial [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT1-05-05.
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Affiliation(s)
- S Katzendobler
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - L Haunreiter
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - L Zander
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - R Schmidt
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - A Andrulat
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - K Münch
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - C Hanusch
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - R Napieralski
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - I Petri
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
| | - J Ettl
- Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany; Rotkreuzklinikum München, Frauenklinik, Munich, Germany; Städtisches Klinikum München Harlaching, Munich, Germany; ProReiki – der Berufsverband e.V., Berlin, Germany
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Wallesch CW, Marx P, Tegenthoff M, Widder B, Schwerdtfeger K, du Mesnil de Rochemont R, Schmidt R, Neumann-Zielke L, Schwalbe M. [Guideline "Legal evaluation after closed brain injury in adulthood"]. Fortschr Neurol Psychiatr 2018; 86:635-653. [PMID: 30359998 DOI: 10.1055/a-0677-7068] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
In 2005 and 2013, the "Deutsche Gesellschaft für Neurowissenschaftliche Begutachtung" (German Society for Neuroscientific Evaluation) together with other societies developed and consented guidelines fort the legal evaluation of patients with closed head injuries and published them trough the National Working Group of Scientific Medical Societies and in this journal. Five years later, a revision was necessary, this was developed on the higher S2 k level of consent through a Delphi conference.
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Rolf D, Schmidt R, Möllers M, Oelmeier de Murcia K, Braun J, Hammer K, Klockenbusch W, Schmitz R. Untersuchung des Strain und der Dyssynchromie bei unauffälligen Feten mittels Speckle Tracking Echokardiografie – Vergleich von drei unterschiedlichen Ultraschallsonden. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671447] [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)
- D Rolf
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
| | - R Schmidt
- University of Münster, Institute of Biostatistics and Clinical Research, Münster, Deutschland
| | - M Möllers
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
| | | | - J Braun
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
| | - K Hammer
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
| | - W Klockenbusch
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
| | - R Schmitz
- University of Münster, Obstetrics and Gynecology, Münster, Deutschland
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Roberts A, Shah M, Schmidt R. Sex differences in euploid rates between day 5 and day 6 blastocyst expansion in IVF/PGT-A cycles. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.217] [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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Schmidt R, Möhring M, Zimmerman A. Dynamic Capabilities of Decision-oriented Service Systems. International Journal of Information Systems in the Service Sector 2018. [DOI: 10.4018/ijisss.2018070103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new class of information system architecture, decision-oriented service systems, is spreading more and more. Decision-oriented service systems provide services that support decisions in business processes and products based on the capabilities of cloud-computing environments. To pave the way for the creation of design methods of business processes and products based on decision-oriented service systems, this article introduces a capability-oriented approach. Starting from technological capabilities, more abstract operational and dynamic capabilities are created. The framework created is based on an integrated conceptualization of decision-oriented service systems that allows capturing synergetic effects. By creating the framework, the gap between the technological capabilities of technologies and the strategic goals of enterprises shall be narrowed.
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Kocjan A, Schmidt R, Lazar A, Prado-Gonjal J, Kovač J, Logar M, Mompean FJ, Garcia-Hernandez M, Ruiz-Hitzky E, Wicklein B. In situ generation of 3D graphene-like networks from cellulose nanofibres in sintered ceramics. Nanoscale 2018; 10:10488-10497. [PMID: 29799032 DOI: 10.1039/c8nr00717a] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Establishing a 3D electrically percolating network in an insulating matrix is key to numerous engineering and functional applications. To this end, using hydrophobic carbon nanofillers is tempting, but still results in suboptimal performance due to processing challenges. Here, we demonstrate how natural cellulose nanofibres can be in situ transformed into graphene-like sheets connected to a 3D network enhancing both the transport and the mechanical properties of sintered engineering ceramics. The network architecture also permits the decoupling of electrical and thermal conductivities, which represents a major obstacle in attaining efficient thermoelectric materials. We foresee that our transferable methodology can pave the way for the use of natural nanofibres to unravel the full potential of 3D graphene-like networks to accelerate development in fields like energy and telecommunications.
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Affiliation(s)
- AndraŽ Kocjan
- Department for Nanostructured Materials, JoŽef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
| | - Rainer Schmidt
- Facultad de Ciencias Físicas, GFMC, Universidad Complutense de Madrid, 28040 Madrid, Spain and Laboratorio de Heteroestructuras con aplicacion en spintronica, Unidad asociada UCM/CSIC, 28049 Madrid, Spain
| | - Ana Lazar
- Department for Nanostructured Materials, JoŽef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia. and JoŽef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Jesús Prado-Gonjal
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Janez Kovač
- Department for Surface Engineering and Optoelectronics, JoŽef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Manca Logar
- Department of Materials Chemistry, National Institute of Chemistry, 1000 Ljubljana, Slovenia
| | - Francisco J Mompean
- Laboratorio de Heteroestructuras con aplicacion en spintronica, Unidad asociada UCM/CSIC, 28049 Madrid, Spain and Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Mar Garcia-Hernandez
- Laboratorio de Heteroestructuras con aplicacion en spintronica, Unidad asociada UCM/CSIC, 28049 Madrid, Spain and Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Eduardo Ruiz-Hitzky
- Department of New Architectures in Materials Chemistry, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
| | - Bernd Wicklein
- Department of New Architectures in Materials Chemistry, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
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Iorgulescu JB, Ferris S, Agarwal A, Casavilca Zambrano S, Hill DA, Schmidt R, Perry A. Non-meningothelial meningeal tumours with meningioangiomatosis-like pattern of spread. Neuropathol Appl Neurobiol 2018; 44:743-746. [PMID: 29495087 DOI: 10.1111/nan.12481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 02/22/2018] [Indexed: 01/14/2023]
Affiliation(s)
- J B Iorgulescu
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - S Ferris
- Division of Neuropathology, Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - A Agarwal
- Department of Pathology, Mercy Hospital, St. Louis, MO, USA
| | - S Casavilca Zambrano
- Department of Pathology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - D A Hill
- Department of Pathology, Children's National Medical Center, Washington, DC, USA
| | - R Schmidt
- Division of Neuropathology, Department of Pathology, Washington University School of Medicine, St. Louis, MO, USA
| | - A Perry
- Division of Neuropathology, Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
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Pastor MJ, Sánchez I, Campo JA, Schmidt R, Cano M. New Pyrazolium Salts as a Support for Ionic Liquid Crystals and Ionic Conductors. Materials (Basel) 2018; 11:ma11040548. [PMID: 29614030 PMCID: PMC5951432 DOI: 10.3390/ma11040548] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/21/2018] [Accepted: 03/28/2018] [Indexed: 11/29/2022]
Abstract
Ionic liquid crystals (ILCs) are a class of materials that combine the properties of liquid crystals (LCs) and ionic liquids (ILs). This type of materials is directed towards properties such as conductivity in ordered systems at different temperatures. In this work, we synthesize five new families of ILCs containing symmetrical and unsymmetrical substituted pyrazolium cations, with different alkyl long-chains, and anions such as Cl−, BF4−, ReO4−, p-CH3-6H4SO3− (PTS) and CF3SO3− (OTf). We study their thermal behavior by polarized light optical microscopy (POM) and differential scanning calorimetry (DSC). All of them, except those with OTf as counteranion, show thermotropic mesomorphism. The observations by POM reveal textures of lamellar mesophases. Those agree with the arrangement observed in the X-ray crystal structure of [H2pzR(4),R(4)][ReO4]. The nature of the mesophases is also confirmed by variable temperature powder X-ray diffraction. On the other hand, the study of the dielectric properties at variable temperature in mesomorphic (Cl− and BF4−) and non-mesomorphic (OTf) salts indicates that the supramolecular arrangement of the mesophase favors a greater ionic mobility and therefore ionic conductivity.
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Affiliation(s)
- María Jesús Pastor
- Dpto. Química Inorgánica, Fac. CC. Químicas, Universidad Complutense, E-28040 Madrid, Spain.
| | - Ignacio Sánchez
- Dpto. Química Inorgánica, Fac. CC. Químicas, Universidad Complutense, E-28040 Madrid, Spain.
| | - José A Campo
- Dpto. Química Inorgánica, Fac. CC. Químicas, Universidad Complutense, E-28040 Madrid, Spain.
| | - Rainer Schmidt
- Dpto. Física de Materiales, Fac. CC. Físicas, GFMC, Universidad Complutense, E-28040 Madrid, Spain.
| | - Mercedes Cano
- Dpto. Química Inorgánica, Fac. CC. Químicas, Universidad Complutense, E-28040 Madrid, Spain.
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Affiliation(s)
- S. Mitzner
- Division of Nephrology, Department of Medicine, University of Rostock, Rostock - Germany
| | - J. Stange
- Division of Nephrology, Department of Medicine, University of Rostock, Rostock - Germany
| | - J. Freytag
- Division of Nephrology, Department of Medicine, University of Rostock, Rostock - Germany
| | - S. Lindemann
- Division of Nephrology, Department of Medicine, University of Rostock, Rostock - Germany
| | - R. Schmidt
- Division of Nephrology, Department of Medicine, University of Rostock, Rostock - Germany
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Berti G, Engelbrecht G, Fingberg J, Kohring G, Middleton SE, Schmidt R, Benkner S. GEMSS: Grid-infrastructure for Medical Service Provision. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1633941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives:
The European GEMSS Project is concerned with the creation of medical Grid service prototypes and their evaluation in a secure service-oriented infrastructure for distributed on demand/supercomputing. Key aspects of the GEMSS Grid middleware include negotiable QoS support for time-critical service provision, flexible support for business models, and security at all levels in order to ensure privacy of patient data as well as compliance to EU law.
Methods:
The GEMSS Grid infrastructure is based on a service-oriented architecture and is being built on top of existing standard Grid and Web technologies. The GEMSS infrastructure offers a generic Grid service provision framework that hides the complexity of transforming existing applications into Grid services. For the development of client-side applications or portals, a pluggable component framework has been developed, providing developers with full control over business processes, service discovery, QoS negotiation, and workflow, while keeping their underlying implementation hidden from view.
Results:
A first version of the GEMSS Grid infrastructure is operational and has been used for the set-up of a Grid test-bed deploying six medical Grid service prototypes including maxillofacial surgery simulation, neuro-surgery support, radio-surgery planning, inhaled drug-delivery simulation, cardiovascular simulation and advanced image reconstruction.
Conclusions:
The GEMSS Grid infrastructure is based on standard Web Services technology with an anticipated future transition path towards the OGSA standard proposed by the Global Grid Forum. GEMSS demonstrates that the Grid can be used to provide medical practitioners and researchers with access to advanced simulation and image processing services for improved preoperative planning and near real-time surgical support.
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Burkhardt B, Faldum A, Schmidt R. Adaptive Designs with Discrete Test Statistics and Consideration of Overrunning. Methods Inf Med 2018; 54:434-46. [DOI: 10.3414/me14-02-0023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 09/09/2015] [Indexed: 01/08/2023]
Abstract
Summary
Background: Interim analyses are used in clinical trials in order to enable early decisions for medical, ethical, and economic reasons. However, it appears unfeasible to stop a trial during such an interim analysis. New patients will thus enter the trial while the interim analysis is ongoing. Moreover, depending on the event kinetics of the specific disease, the trial design, and the corresponding endpoints, some patients might still be unevaluable at the interim analysis due to not yet completed follow-up. Occur-rence of these types of patients is characteristic for sequentially analyzed trials. Such patients are referred to as interim patients. In trials with multiple primary endpoints, another type of interim patients occurs. If some but not all null hypotheses can be rejected at the interim analysis, the trial might be continued to a second stage in order to answer the remaining questions. These second stage patients, however, provide new data to all trial questions including the already rejected ones and thus formally act as interim patients regarding the already rejected null hypotheses. Although all kinds of interim patients are not part of the interim analysis, the data collected on those patients have to be sent to the office of regulatory affairs and will be analyzed. If a smaller or contrasting treatment effect is observed in interim patients, this might lead to a withdrawal of an earlier superiority proof.
Objectives: Presently, interim patients and their data are usually not considered in the confirmatory test. We offer a strategy to deal with interim patients in sequentially analyzed trials with discrete test statistics. The method covers sequentially analyzed single-and multi-arm trials with one or multiple primary endpoints.
Methods: When planning adaptive designs, it is common practice to assume that the stage-wise p-values are independent and standard uniformly distributed under the null hypothesis. In the context of discrete test statistics, this implies conservative tests. We provide an algorithm which iteratively optimizes an initially given design while adjusting for both discreteness of test statistics and interim patients. The algorithm is described verbally, graphically and formally to facilitate immediate implementation in computer software.
Results: The optimized design exploits the aspired significance level better and is more powerful than the initial one. The algorithm applies to fixed sample and planned flexible adaptive designs for single- and multi-arm trials with one or multiple primary endpoints. The benefit increases with the number of interim patients.
Conclusions: When planning a trial with interim analyses, the rules for decisions must be adjusted to interim patients. Otherwise, the test procedure is conservative resulting in loss of power. This is essential in situations where the number of interim patients is important compared to the first stage, particularly in trials with multiple primary endpoints.
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Zeuner KE, Schmidt R, Schwingenschuh P. [Clinical and cognitive aspects of functional (psychogenic) tremor]. Nervenarzt 2018; 89:400-407. [PMID: 29327097 DOI: 10.1007/s00115-017-0476-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Functional (psychogenic) tremor is the most common functional movement disorder. Characteristic clinical features, so called red flags, can help to make the clinical distinction of this type from other tremor disorders. The most common features include the variability of frequency and amplitude. Clinical examination should include different types of distraction including motor or cognitive tasks or testing the influence of suggestibility on tremor amplitude, frequency or direction. Patients often report sudden onset and remissions that may last for months or even years. In some cases, the tremor is only present in highly specific situations. Although functional tremor shares characteristics with voluntary actions, patients experience their abnormal movements as involuntary. Recent experimental approaches have revealed an impairment in sense of agency. The diagnosis can be supported by neurophysiological measurements including accelerometry, which achieved a sensitivity of 89.5% and a specificity of 95.9% in a validated test battery, thus providing a useful additional diagnostic tool. Psychotherapeutic treatment is indicated in patients with and without evident psychological symptoms. A specific physiotherapeutic approach for functional tremor is re-trainment.
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Affiliation(s)
- K E Zeuner
- Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Christian-Albrechts-Universität Kiel, Arnold-Heller-Str. 3, Haus 41, 24105, Kiel, Deutschland.
| | - R Schmidt
- Psychotherapeutische Neurologie, Kliniken Schmieder, Neurologisches Fach- und Rehabilitationskrankenhaus, Konstanz, Deutschland
| | - P Schwingenschuh
- Universitätsklinik für Neurologie, Medizinische Universität Graz, Graz, Österreich
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Schmidt R, Palitzsch KD. [Severe emergencies in patients with diabetes]. MMW Fortschr Med 2017; 159:77-82. [PMID: 29230741 DOI: 10.1007/s15006-017-0398-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Klaus-Dieter Palitzsch
- Klinik für Endokrinologie, Diabetologie, Angiologie und Innere Medizin, Notfallzentrum, Klinikum Neuperlach - Städt., Klinikum München GmbH, Oskar-Maria-Graf-Ring 51, D-81737, München, Deutschland.
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Schmidt R, Pilz S, Lindemann I, Damm C, Hufenbach J, Helth A, Geissler D, Henss A, Rohnke M, Calin M, Zimmermann M, Eckert J, Lee M, Gebert A. Powder metallurgical processing of low modulus β-type Ti-45Nb to bulk and macro-porous compacts. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Koinig KA, Büsing N, Wille A, Sattler B, Schmidt R, Psenner R. Diatom communities in the ice cover of an alpine lake — their influence on pH reconstruction from fossil diatom assemblages. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/03680770.1998.11901426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Boudjemia K, Ellerbroek P, Hanitsch L, Schmidt R, Van Hagen P, Van Paassen P, Borte M, Berner T, Nikolov N, Yel L. Les résultats intérimaires d’une étude non interventionnelle de sécurité post-AMM (PASS) sur la sécurité à long terme de l’IgSCf 10 % perfusion facilitée avec la Hyaluronidase humaine recombinée (rHuPH20) chez les patients atteints de Déficit Immunitaire. Rev Med Interne 2017. [DOI: 10.1016/j.revmed.2017.10.120] [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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De Torres Alba F, Kaleschke G, Vormbrock J, Feurle M, Stepper W, Schmidt R, Radke R, Orwat S, Fischer D, Reinecke H, Deschka H, Diller GP, Baumgartner H. 4797Annulus rupture after ballon-expandable transcatheter aortic valve implantation. Can we eliminate this complication by advanced practice? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.4797] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dos santos-García AJ, Solana-Madruga E, Ritter C, Andrada-Chacón A, Sánchez-Benítez J, Mompean FJ, Garcia-Hernandez M, Sáez-Puche R, Schmidt R. Large Magnetoelectric Coupling Near Room Temperature in Synthetic Melanostibite Mn2
FeSbO6. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609762] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Antonio J. Dos santos-García
- Dpto. Ingeniería mecánica, química y diseño industrial; ETSIDI. Universidad Politécnica de Madrid; 28012 Madrid Spain
| | - Elena Solana-Madruga
- Dpto. Química Inorganica I, Fac. Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | | | - Adrián Andrada-Chacón
- Dpto. Química Física I, MALTA Consolider Team, Fac. Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Javier Sánchez-Benítez
- Dpto. Química Física I, MALTA Consolider Team, Fac. Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Federico J. Mompean
- Instituto de Ciencias de Materiales, CSIC; 28049 Madrid Spain
- Unidad Asociada “Laboratorio de heteroestructuras con aplicación en espintrónica”, UCM/CSIC; 28049 Madrid Spain
| | - Mar Garcia-Hernandez
- Instituto de Ciencias de Materiales, CSIC; 28049 Madrid Spain
- Unidad Asociada “Laboratorio de heteroestructuras con aplicación en espintrónica”, UCM/CSIC; 28049 Madrid Spain
| | - Regino Sáez-Puche
- Dpto. Química Inorganica I, Fac. Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Rainer Schmidt
- Dpto. de Física de Materiales, Fac. Físicas, GFMC; Universidad Complutense de Madrid; 28040 Madrid Spain
- Unidad Asociada “Laboratorio de heteroestructuras con aplicación en espintrónica”, UCM/CSIC; 28049 Madrid Spain
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