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Demmer I, Selgert L, Altiner A, Baum E, Becker A, Schmittdiel L, Streitlein-Böhme I, Michiels-Corsten M, Zutz S, Hummers E, Jünger J. Implementation of a uniform nationwide medical licensing examination in general practice. A feasibility study. GMS J Med Educ 2021; 38:Doc96. [PMID: 34286076 PMCID: PMC8256129 DOI: 10.3205/zma001492] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 02/09/2021] [Accepted: 05/31/2021] [Indexed: 06/13/2023]
Abstract
Objective: A competency-based training of medical students that is adapted to the realities of care is required internationally and is being intended in Germany with the Master Plan for Medical Studies 2020. In order to test these competencies, the German National Institute for state examinations in Medicine, Pharmacy and Psychotherapy (IMPP) has developed a concept for the redesign of the final part of the medical licensing examination in Germany. It focuses on general and interprofessional healthcare in the examination with outpatients. The aim of this work is to assess the feasibility of the new final examination on the basis of pilot examinations in family practices and to derive further steps for the national implementation. Methods: Fourteen medical students in their internship year completed a full examination with patients aged 42 to 84 years. Examiners evaluated the examination performance using standardised evaluation forms. Feasibility was qualitatively assessed in terms of compliance with content and time limits, examination results, patient reflections, and implementation in the practice. Results: Students were able to complete all tasks within the given time frame. Based on the evaluation forms, the examiners assessed the performance of the students. Patients appreciated the structured course of the examination in the familiar location of their family practice. For the nationwide implementation of the examination, 2,500 examination practices are required for about 10,000 examinees per year. Four students can then be examined on two days per year in each practice. Conclusions: Oral-practical examinations with outpatients in general medical practices can be carried out successfully throughout the nation. An implementation of the examinations throughout Germany requires that medical studies are restructured and that this new curriculum is implemented as intended by the Master Plan for Medical Studies 2020. Furthermore, training and remuneration of examiners together with a legal framework for the new examination must be established.
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Affiliation(s)
- Iris Demmer
- University Medical Center Göttingen, Department of General Practice, Göttingen, Germany
| | - L. Selgert
- German National Institute for state examinations in Medicine, Pharmacy and Psychotherapy (IMPP), Mainz, Germany
| | - A. Altiner
- University Medical Center Rostock, Department of General Practice, Rostock, Germany
| | - E. Baum
- University of Marburg, Department of General Practice/Family Medicine, Marburg, Germany
| | - A. Becker
- University of Marburg, Department of General Practice/Family Medicine, Marburg, Germany
| | | | - I. Streitlein-Böhme
- Ruhr-University Bochum, Department of General Practice/Family Medicine, Bochum, Germany
| | - M. Michiels-Corsten
- University of Marburg, Department of General Practice/Family Medicine, Marburg, Germany
| | - S. Zutz
- Practice for general and family medicine, Neubukow, Germany
| | - E. Hummers
- University Medical Center Göttingen, Department of General Practice, Göttingen, Germany
| | - J. Jünger
- German National Institute for state examinations in Medicine, Pharmacy and Psychotherapy (IMPP), Mainz, Germany
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Misian M, Baum E, Breborowicz A. N-acetylcysteine modulates effect of the iron isomaltoside on peritoneal mesothelial cells. J Physiol Pharmacol 2020; 71. [PMID: 32991316 DOI: 10.26402/jpp.2020.3.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 06/30/2020] [Indexed: 11/03/2022]
Abstract
Intravenous (i.v.) iron supplementation is used in patients on chronic peritoneal dialysis (pd). Iron induced intraperitoneal inflammation observed in our previous studies with iron sucrose may deteriorate the function of the peritoneum as the dialysis membrane. We evaluated effect iron compound, iron-isomaltoside-100 (IIS) on the peritoneal mesothelial cells (MC). We studied the effect of iv treatment with IIS ± N-acetylcysteine (NAC) on the dialysate parameters and function of MC. In 7 uremic pd patients IIS 200 mg was infused i.v. ± NAC 600 mg. Afterward, a 4 hours exchange was performed with Dianeal 1.5%. As a control dialysate exchange preceding IIS treatment was used. Inflammatory parameters of the drained dialysates as well as the dialysates and IIS effects on MC were evaluated in ex vivo experiments. Intravenous infusion of IIS resulted in an increase of the dialysate Fe (+147%, P < 0.01). Concentrations of the dialysates inflammatory mediators were increased: interleukin-6 (IL-6) +39%, P < 0.02, monocyte chemoattractant protein-1(MCP1) +50%, P < 0.02, and hyaluronan (HA) +64%, P < 0.02. Simultaneous i.v. infusion of NAC prevented increase of the dialysate inflammatory mediators. Dialysates collected after IIS treatment induced oxidative stress in MC (+29%, P < 0.05) and stimulated IL-6 synthesis (+64%, P < 0.05) in MC; no such effect was seen in dialysates obtained after simultaneous IIS and NAC i.v. treatment. IIS used as the additive to culture medium stimulated synthesis in MC of IL6 (+76%, P < 0.001) and plasminogen activator inhibitor-1 (PAI-1) (28%, P < 0.001) whereas synthesis of tissue plasminogen activator (t-PA) was reduced (-16%, P < 0.001). These changes were prevented in the presence of NAC 1 mmol/L. Intravenous administration of IIS results in the mild stimulation of intraperitoneal inflammation. IIS changes MC phenotype to the inflammatory one with reduced fibrinolytic activity. These effects are prevented by NAC.
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Affiliation(s)
- M Misian
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
| | - E Baum
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
| | - A Breborowicz
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland.
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Jia H, Cai Z, Holden D, He Y, Lin SF, Li S, Baum E, Shirali A, Kapinos M, Gao H, Ropchan J, Huang Y. Positron Emission Tomography Imaging Evaluation of a Novel 18F-Labeled Sigma-1 Receptor Radioligand in Cynomolgus Monkeys. ACS Chem Neurosci 2020; 11:1673-1681. [PMID: 32356969 DOI: 10.1021/acschemneuro.0c00171] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report a convenient radiosynthesis and the first positron emission tomography (PET) imaging evaluation of [18F]FBFP as a potent sigma-1 (σ1) receptor radioligand with advantageous characteristics. [18F]FBFP was synthesized in one step from an iodonium ylide precursor. In cynomolgus monkeys, [18F]FBFP displayed high brain uptake and suitable tissue kinetics for quantitative analysis. It exhibited heterogeneous distribution with higher regional volume of distribution (VT) values in the amygdala, hippocampus, insula, and frontal cortex. Pretreatment with the σ1 receptor agonist SA4503 (0.5 mg/kg) significantly reduced radioligand uptake in the monkey brain (>95%), indicating high binding specificity of [18F]FBFP in vivo. Compared with (S)-[18F]fluspidine, [18F]FBFP possessed higher regional nondisplaceable binding potential (BPND) values across the brain regions. These findings demonstrate that [18F]FBFP is a highly promising PET radioligand for imaging and quantification of σ1 receptors in humans.
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Affiliation(s)
- Hongmei Jia
- Key Laboratory of Radiopharmaceuticals (Beijing Normal University), Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Zhengxin Cai
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Daniel Holden
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Yingfang He
- Key Laboratory of Radiopharmaceuticals (Beijing Normal University), Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Shu-Fei Lin
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Songye Li
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Evan Baum
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Anupama Shirali
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Michael Kapinos
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Hong Gao
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Jim Ropchan
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Yiyun Huang
- Yale PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
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Misian M, Baum E, Breborowicz A. Sulodexide modulates the dialysate effect on the peritoneal mesothelium. J Physiol Pharmacol 2020; 70. [PMID: 32203941 DOI: 10.26402/jpp.2019.6.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/30/2019] [Indexed: 11/03/2022]
Abstract
Peritoneal membrane damage during chronic peritoneal dialysis is the main cause of that treatment failure. Preservation of the mesothelial cells (MC) is important for the survival of the peritoneum. Evaluation of dialysates effect on the function of MC and potential modification of that effect by sulodexide (heparin 80% and dermatan sulfate 20%). Dialysate effluents, after the overnight exchange with dianeal 1.5% dextrose, were collected from 7 continuous ambulatory peritoneal dialysis (CAPD) patients, and their effect ± sulodexide 0.5 LRU/mL on genes expression, secretory activity and protein synthesis in MC was studied. Exposure of MC to the studied dialysates caused intracellular oxidative stress and significantly increased expression of the genes regulating the synthesis of interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), transforming growth factor-beta (TGF-β), vascular cell adhesion molecule 1 (VCAM-1) and vascular endothelial growth factor (VEGF). Secretion of the studied molecules from MC treated with dialysates was increased: by 96% for IL-6 (P < 0.01), 34% for MCP-1(P < 0.01), 24% for TGF-β (P < 0.01), 27% for VCAM-1 (P < 0.01), and by 15% for VEGF (P < 0.01). Sulodexide reduced the stimulatory effect of the dialysates on the intracellular generation of free radicals, genes expression and secretory activity of MC. These cells exposed to the dialysates showed increased synthesis of total protein (by 216%, P < 0.005) and collagen (by 264%, P < 0.005), as compared to standard culture medium. Supplementation of the dialysates with sulodexide resulted in weaker stimulation of collagen synthesis (-21% versus dialysate). We concluded that peritoneal dialysate changes the genes expression and phenotype of MC to a proinflammatory, profibrotic and proangiogenic one. Sulodexide reduces these negative effects of the dialysate.
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Affiliation(s)
- M Misian
- Department of Pathophysiology, University Medical School, Poznan, Poland
| | - E Baum
- Department of Pathophysiology, University Medical School, Poznan, Poland
| | - A Breborowicz
- Department of Pathophysiology, University Medical School, Poznan, Poland.
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Cai Z, Li S, Zhang W, Pracitto R, Wu X, Baum E, Finnema SJ, Holden D, Toyonaga T, Lin SF, Lindemann M, Shirali A, Labaree DC, Ropchan J, Nabulsi N, Carson RE, Huang Y. Synthesis and Preclinical Evaluation of an 18F-Labeled Synaptic Vesicle Glycoprotein 2A PET Imaging Probe: [ 18F]SynVesT-2. ACS Chem Neurosci 2020; 11:592-603. [PMID: 31961649 DOI: 10.1021/acschemneuro.9b00618] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Synaptic vesicle glycoprotein 2A (SV2A) is a 12-pass transmembrane glycoprotein ubiquitously expressed in presynaptic vesicles. In vivo imaging of SV2A using PET has potential applications in the diagnosis and prognosis of a variety of neuropsychiatric diseases, e.g., Alzheimer's disease, Parkinson's disease, schizophrenia, multiple sclerosis, autism, epilepsy, stroke, traumatic brain injury, post-traumatic stress disorder, depression, etc. Herein, we report the synthesis and evaluation of a new 18F-labeled SV2A PET imaging probe, [18F]SynVesT-2, which possesses fast in vivo binding kinetics and high specific binding signals in non-human primate brain.
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Affiliation(s)
- Zhengxin Cai
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Songye Li
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Wenjie Zhang
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Richard Pracitto
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Xiaoai Wu
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Evan Baum
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Sjoerd J. Finnema
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Daniel Holden
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Takuya Toyonaga
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Shu-fei Lin
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Marcel Lindemann
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Anupama Shirali
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - David C. Labaree
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Jim Ropchan
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Nabeel Nabulsi
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Richard E. Carson
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
| | - Yiyun Huang
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut 06520, United States
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Baum E, Zhang W, Li S, Cai Z, Holden D, Huang Y. A Novel 18F-Labeled Radioligand for Positron Emission Tomography Imaging of 11β-Hydroxysteroid Dehydrogenase (11β-HSD1): Synthesis and Preliminary Evaluation in Nonhuman Primates. ACS Chem Neurosci 2019; 10:2450-2458. [PMID: 30689943 DOI: 10.1021/acschemneuro.8b00715] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
11β-Hydroxysteroid dehydrogenase type 1 (11β-HSD1) catalyzes the conversion of cortisone to cortisol and controls a key pathway in the regulation of stress. Studies have implicated 11β-HSD1 in metabolic diseases including type 2 diabetes and obesity, as well as stress-related disorders and neurodegenerative diseases, such as depression and Alzheimer's disease (AD). We have previously developed [11C]AS2471907 as a PET radiotracer to image 11β-HSD1 in the brain of nonhuman primates and humans. However, the radiosynthesis of [11C]AS2471907 was unreliable and low-yielding. Here, we report the development of the 18F-labeled version [18F]AS2471907, including the synthesis of two iodonium ylide precursors and the optimization of 18F-radiosynthesis. Preliminary PET experiments, composed of a baseline scan of [18F]AS2471907 and a blocking scan with the reversible 11β-HSD1 inhibitor ASP3662 (0.3 mg/kg), was also conducted in a rhesus monkey to verify the pharmacokinetics of [18F]AS2471907 and its specific binding in the brain. The iodonium ylide precursors were prepared in a seven-step synthetic route with an optimized overall yield of ∼2%. [18F]AS2471907 was synthesized in good radiochemical purity, with the ortho regioisomer of iodonium ylide providing greater radiochemical yield as compared with the para regioisomer. In monkey brain, [18F]AS2471907 displayed high uptake and heterogeneous distribution, while administration of the 11β-HSD1 inhibitor ASP3662 significantly reduced radiotracer uptake, thus demonstrating the binding specificity of [18F]AS2471907. Given the longer half-life of F-18 and feasibility for central production and distribution, [18F]AS2471907 holds great promise to be a valuable PET radiotracer to image 11β-HSD1 in the brain.
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Affiliation(s)
- Evan Baum
- PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 801 Howard Ave, New Haven, Connecticut 06520-8048, United States
| | - Wenjie Zhang
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Songye Li
- PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 801 Howard Ave, New Haven, Connecticut 06520-8048, United States
| | - Zhengxin Cai
- PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 801 Howard Ave, New Haven, Connecticut 06520-8048, United States
| | - Daniel Holden
- PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 801 Howard Ave, New Haven, Connecticut 06520-8048, United States
| | - Yiyun Huang
- PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, 801 Howard Ave, New Haven, Connecticut 06520-8048, United States
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Thomasius F, Baum E, Bernecker P, Böcker W, Brabant T, Clarenz P, Demary W, Dimai HP, Engelbrecht M, Engelke K, Fratermann U, Grieser T, Gulich M, Hadji P, Henning J, Jehle PM, Kern PM, Ketteler M, Klatt G, Kraenzlin M, Maus U, Meier C, Moser U, Müller D, Peichl P, Pfeifer M, Rintelen B, Rueger JM, Schober HC, Schöffel D, Schwarz H, Siggelkow H, Suhm N, Wiese KG, Wörtler K, Kurth AA. DVO Leitlinie 2017 zur Prophylaxe, Diagnostik und Therapie der Osteoporose bei postmenopausalen Frauen und Männern. ACTA ACUST UNITED AC 2018. [DOI: 10.1055/s-0038-1673537] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungDiese DVO Leitlinien, die in erster Linie für Allgemeinmediziner und Spezialisten für Knochenerkrankungen bestimmt sind, sollten von allen im klinischen und ambulanten Bereich tätigen medizinischen Fachkräften angewendet werden. Ziel der Leitlinie ist die Verbesserung der Diagnose, Prävention und Behandlung von Osteoporose und der Folgen der Erkrankung auf der Grundlage evidenzbasierter Medizin.Klare Empfehlungen, welche Patienten zu diagnostizieren und behandeln sind (basierend auf Risikofaktoren [einschließlich sekundärer Osteoporose]) sowie Primär-, Sekundär- oder Tertiärprävention werden dargestellt, mit dem Schwerpunkt auf der postmenopausalen Osteoporose und der Osteoporose bei Männern.Die Identifizierung von Patienten mit einem hohen Risiko für Frakturen wird hervorgehoben, und spezifische Schwellenwerte für die Intervention sind definiert (20 % Hüftfrakturrisiko innerhalb von 10 Jahren diagnostischer Schwellenwert, 30 % Hüftfrakturrisiko innerhalb von 10 Jahren therapeutische Schwelle). Die Diagnose von Osteoporose basiert auf der Anamnese des Patienten, der körperlichen Untersuchung, dem Funktionstest (z. B. Timed Up and Go Test), konventionellen Röntgenaufnahmen der Brust- und Lendenwirbelsäule und der Bestimmung der Knochenmineraldichte (BMD) durch das DXA Verfahren.Die Anamnese ist entscheidend für die Abschätzung des Frakturrisikos auf der Grundlage von 40 wissenschaftlich überprüften Risikofaktoren, die das Frakturrisiko mindestens verdoppeln (z. B. Begleiterkrankungen, Hüftfrakturen in der Familie, prävalente Frakturen an jedem Ort, Lebensstil, Anwendung von Medikamenten, körperliche Aktivität und Stürze). Röntgenaufnahmen der Brust- und Lendenwirbelsäule sind wichtig, um prävalente Wirbelkörperfrakturen zu erkennen. Beim Fehlen eines großen Traumas kann jede Fraktur bei Erwachsenen über dem Alter von 50 Jahren eine Diagnose von Osteoporose nahelegen, mit dem höchsten Risiko für eine nachfolgende Fraktur innerhalb einer kurzen Zeit nach der ersten Fraktur. BMD-Messungen mit DXA sind wichtig, um das individuelle Frakturrisiko besser abschätzen zu können. Eine grundlegende Laboruntersuchung ist obligatorisch, um verschiedene Formen der sekundären Osteoporose ausschließen zu können.Der DVO-Patientenfindungs-Algorithmus basiert auf dem Geschlecht, Alter, Knochenmineraldichte und vorbestehenden Frakturen als wichtigste Informationen. Die Indikation für eine aktive anti-osteoporotische Therapie kann durch multiple Risikofaktoren modifiziert und verfeinert werden. Dieser Algorithmus wurde seit dem Richtlinien-Update 2006 verwendet und wurde entsprechend der internationalen Literatur zu Risikofaktoren für Osteoporose und osteoporotische Frakturen aktualisiert und angepasst.Die Behandlung der Osteoporose enthält viele Therapiepfeiler. Zusammen mit Empfehlungen für Bewegung, Physiotherapie und Sturzprävention sowie Ernährung (z. B. Calcium, Vit. D), werden pharmakologische Behandlungen basierend auf evidenzbasierter Medizin empfohlen. Die aktiven Anti-Osteoporose-Medikamente müssen für die Indikation postmenopausale Osteoporose und männliche Osteoporose in Deutschland, Österreich und der Schweiz zugelassen sein. Das Management und die Vorbeugung von häufigen oder seltenen Nebenwirkungen aufgrund von Anti-Osteoporose-Behandlungen, die in der klinischen Praxis angewendet werden, werden ebenfalls detailliert behandelt.
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Finnema SJ, Nabulsi NB, Eid T, Detyniecki K, Lin SF, Chen MK, Dhaher R, Matuskey D, Baum E, Holden D, Spencer DD, Mercier J, Hannestad J, Huang Y, Carson RE. Imaging synaptic density in the living human brain. Sci Transl Med 2017; 8:348ra96. [PMID: 27440727 DOI: 10.1126/scitranslmed.aaf6667] [Citation(s) in RCA: 300] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/24/2016] [Indexed: 12/26/2022]
Abstract
Chemical synapses are the predominant neuron-to-neuron contact in the central nervous system. Presynaptic boutons of neurons contain hundreds of vesicles filled with neurotransmitters, the diffusible signaling chemicals. Changes in the number of synapses are associated with numerous brain disorders, including Alzheimer's disease and epilepsy. However, all current approaches for measuring synaptic density in humans require brain tissue from autopsy or surgical resection. We report the use of the synaptic vesicle glycoprotein 2A (SV2A) radioligand [(11)C]UCB-J combined with positron emission tomography (PET) to quantify synaptic density in the living human brain. Validation studies in a baboon confirmed that SV2A is an alternative synaptic density marker to synaptophysin. First-in-human PET studies demonstrated that [(11)C]UCB-J had excellent imaging properties. Finally, we confirmed that PET imaging of SV2A was sensitive to synaptic loss in patients with temporal lobe epilepsy. Thus, [(11)C]UCB-J PET imaging is a promising approach for in vivo quantification of synaptic density with several potential applications in diagnosis and therapeutic monitoring of neurological and psychiatric disorders.
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Affiliation(s)
- Sjoerd J Finnema
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA.
| | - Nabeel B Nabulsi
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Tore Eid
- Department of Laboratory Medicine, Yale University, New Haven, CT 06520, USA
| | - Kamil Detyniecki
- Department of Neurology, Yale University, New Haven, CT 06520, USA
| | - Shu-Fei Lin
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Ming-Kai Chen
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Roni Dhaher
- Department of Laboratory Medicine, Yale University, New Haven, CT 06520, USA
| | - David Matuskey
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Evan Baum
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Daniel Holden
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Dennis D Spencer
- Department of Neurosurgery, Yale University, New Haven, CT 06520, USA
| | | | | | - Yiyun Huang
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Richard E Carson
- Yale Positron Emission Tomography Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA. Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA
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9
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Baum E, Cai Z, Bois F, Holden D, Lin SF, Lara-Jaime T, Kapinos M, Chen Y, Deuther-Conrad W, Fischer S, Dukic-Stefanovic S, Bunse P, Wünsch B, Brust P, Jia H, Huang Y. PET Imaging Evaluation of Four σ 1 Radiotracers in Nonhuman Primates. J Nucl Med 2017; 58:982-988. [PMID: 28232607 DOI: 10.2967/jnumed.116.188052] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 12/08/2016] [Accepted: 02/09/2017] [Indexed: 01/24/2023] Open
Abstract
The σ1 receptors (S1Rs) are implicated in a variety of diseases including Alzheimer disease and cancer. Previous PET S1R radiotracers are characterized by slow kinetics or off-target binding that impedes their use in humans. Here, we report the first PET imaging evaluation in rhesus monkeys of 4 18F-labeled spirocyclic piperidine-based PET radiotracers (18F-1 to 18F-4). Methods: Baseline scans for the 4 radiotracers were obtained on an adult male rhesus monkey. Blocking scans were obtained with the S1R-selective agonist SA4503 to assess binding specificity of 18F-2 and 18F-4 Arterial input functions were measured, and binding parameters were determined with kinetic modeling analysis. Results: In the rhesus brain, all 4 radiotracers showed high and fast uptake. Tissue activity washout was rapid for 18F-2 and 18F-4, and much slower for 18F-1 and 18F-3, in line with their respective in vitro S1R-binding affinities. Both the 1-tissue-compartment and multilinear analysis-1 kinetic models provided good fits of time-activity curves and reliable estimates of distribution volume. Regional distribution volume values were highest in the cingulate cortex and lowest in the thalamus for all radiotracers. 18F-4 showed greater differential uptake across brain regions and 3-fold-higher binding potential than 18F-2 SA4503 at the dose of 0.5 mg/kg blocked approximately 85% (18F-2) and 95% (18F-4) of radiotracer binding. Conclusion: Tracers 18F-2 and 18F-4 displayed high brain uptake and fast tissue kinetics, with 18F-4 having higher specific binding signals than 18F-2 in the same monkey. Taken together, these data indicate that both 18F-2 and 18F-4 possess the requisite kinetic and imaging properties as viable PET tracers for imaging S1R in the human brain.
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Affiliation(s)
- Evan Baum
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Zhengxin Cai
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Frederic Bois
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Daniel Holden
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Shu-Fei Lin
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Teresa Lara-Jaime
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Michael Kapinos
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
| | - Yuanyuan Chen
- Ministry of Education Key Laboratory of Radiopharmaceuticals, College of Chemistry, Beijing Normal University, Beijing, China
| | - Winnie Deuther-Conrad
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Leipzig, Germany; and
| | - Steffen Fischer
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Leipzig, Germany; and
| | - Sladjana Dukic-Stefanovic
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Leipzig, Germany; and
| | - Paul Bunse
- Department of Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Bernhard Wünsch
- Department of Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Peter Brust
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Leipzig, Germany; and
| | - Hongmei Jia
- Ministry of Education Key Laboratory of Radiopharmaceuticals, College of Chemistry, Beijing Normal University, Beijing, China
| | - Yiyun Huang
- PET Center, Department of Radiology and Biomedical Imaging, Yale University, New Haven, Connecticut
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Riemann D, Baum E, Cohrs S, Crönlein T, Hajak G, Hertenstein E, Klose P, Langhorst J, Mayer G, Nissen C, Pollmächer T, Rabstein S, Schlarb A, Sitter H, Weeß HG, Wetter T, Spiegelhalder K. S3-Leitlinie Nicht erholsamer Schlaf/Schlafstörungen. Somnologie 2017. [DOI: 10.1007/s11818-016-0097-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Urbanek T, Zbigniew K, Begier-Krasińska B, Baum E, Bręborowicz A. Sulodexide suppresses inflammation in patients with chronic venous insufficiency. INT ANGIOL 2015; 34:589-596. [PMID: 26044841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM According to previously performed studies, inflammation plays a crucial role in vein wall and leg tissue injury related to chronic venous insufficiency (CVI) development. Sulodexide (SUL) is a balanced mix of glycosaminoglycans with potential anticoagulant and profibrinolytic activity, also protecting endothelial cells and suppressing inflammatory reactions in various vascular disease-related conditions. The goal of the present study was to evaluate the anti-inflammatory action of SUL in patients with CVI. METHODS The study was performed on a group of 11 patients with chronic venous disease (stage C5 according to CEAP classification). The mean age of the patients was 58.4±7.7 years, and none of them were diabetic. The patients were treated for 8 weeks with orally-administered SUL (2 x 500 LSU/day). Blood samples were collected at the start and at the end of the study for measurement of MMP-9, IL-6 and monocyte chemoattractant protein-1 (MCP-1). Additionally, the effect of the obtained serum samples on the function of human venous endothelial cells (HVEC) in in-vitro culture was evaluated. RESULTS After treatment with SUL, the serum concentration of MMP-9 (ng/mL) decreased from 6.50±3.48 to 5.41±1.36, P<0.05, and the concentration of IL-6 (pg/mL) decreased from 11.5±3.4 to 10.1±2.3, P<0.005. There was also a trend of decreased serum MCP-1 (pg/mL) from 31.3±23.0 before treatment to 27.1±10.7 at the end. Intracellular generation of oxygen-derived free radicals in HVEC maintained in in-vitro culture was lower in the serum samples collected after treatment with SUL: 3.09±0.35 abs/μg protein vs. 3.63±0.32 abs/μg protein, at the start, P<0.05. Synthesis of IL-6 was lower in HVEC exposed in vitro to serum collected at the end of SUL treatment: 1.02±0.31 ng/μg cell protein vs. 1.32±0.41 ng/μg cell protein before SUL treatment. The proliferation rate of HVEC was similar in serum collected at the beginning and at the end of SUL treatment. CONCLUSION We conclude that treatment with SUL in patients with CVI reduces intravascular inflammation and is protective for the endothelial cells and for the extracellular matrix changes related to metalloproteinase expression.
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Affiliation(s)
- T Urbanek
- Department of General and Vascular Surgery, Medical University of Silesia, Katowice, Poland -
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Baum E, Treutmann W, Behruzi Μ, Lottermoser W, Amthauer G. Structural and magnetic properties of the clinopyroxenes NaFeSi2O6 and LiFeSi2O6. Z KRIST-CRYST MATER 2015. [DOI: 10.1524/zkri.1988.183.14.273] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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D'Angio G, Evans A, Breslow N, Baum E, Beckwith JB, deLorimier A, Fernbach D, Hrabovsky E, Jones B, Kelalis P, Othersen HB, Tefft M, Thomas P. Management of children with Wilms' tumor: defining the risk-benefit ratio. Front Radiat Ther Oncol 2015; 16:30-9. [PMID: 6277743 DOI: 10.1159/000403088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Zem G, Cooperman B, Bahri F, Mahjoubi A, Warner N, Malekian L, Mirebrahimian R, Pistalu M, Khrayan L, Patel M, Pastrano K, Choi E, Baronian T, Gilani O, Cardenas A, Hambarsoomian A, Gomez D, Gallgos F, Holmes J, Vahdati V, Jorshari L, Grigorian P, Ohanessian K, Baum E, Majarian G, Aldzhyan K, Manasyan H, Allatabakhsh N, Oppenheimer S. Reliability of Yeast Unclumping Assay, a Model for Testing Potentially Clinically Useful Reagents. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.925.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- G Zem
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - B Cooperman
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - F Bahri
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - A Mahjoubi
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - N Warner
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - L Malekian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - R Mirebrahimian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - M Pistalu
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - L Khrayan
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - M Patel
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - K Pastrano
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - E Choi
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - T Baronian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - O Gilani
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - A Cardenas
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - A Hambarsoomian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - D Gomez
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - F Gallgos
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - J Holmes
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - V Vahdati
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - L Jorshari
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - P Grigorian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - K Ohanessian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - E Baum
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - G Majarian
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - K Aldzhyan
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - H Manasyan
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - N Allatabakhsh
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
| | - Steven Oppenheimer
- Center for Cancer and Developmental Biology California State University NorthridgeNorthridgeCAUnited States
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Lemoine S, Fournier T, Kocevar G, Belloi A, Ibarrola D, Sappey-Marinier D, Juillard L, Kaysen G, Usvyat L, Grassmann A, Marcelli D, Pecoits-Filho R, Marelli C, Kooman J, Van Der Sande F, Haviv Y, Power A, Kotanko P, Migliori M, Cantaluppi V, Medica D, Paoletti S, Panichi V, Kuragano T, Yahiro M, Kida A, Nagasawa Y, Hasuike Y, Nanami M, Nakanishi T, Garneata L, Slusanschi O, Dragomir DR, Corbu-Stancu A, Barbulescu C, Mircescu G, Minutolo R, Borrelli S, De Nicola L, Conte G, Basic-Jukic N, Katalinic L, Ivandic E, Kes P, Jelakovic B, Beberashvili I, Sinuani I, Azar A, Shapiro G, Feldman L, Stav K, Sandbank J, Averbukh Z, Bruschetta E, Righetti M, Colombo F, Palmieri N, Prencipe M, Bracchi O, Stefani F, Amar K, Scalia A, Conte F, Rosenberger J, Majernikova M, Kissova V, Straussova Z, Boldizsar J, Cobo G, Di Gioia C, Camacho R, Garcia Lacalle C, Ortega O, Rodriguez I, Mon C, Ortiz M, Herrero J, Oliet A, Vigil A, Gallar P, Kyriazis J, Markaki A, Kourtesi K, Kalymniou M, Vougazianos S, Kyriazis P, Stylianou K, Tanaka H, Tsuneyoshi S, Sawa M, Fujisaki K, Daijo Y, Hristea D, Paris A, Lefrancois G, Volteau C, Savoiu C, Ozenne S, Testa A, Coupel S, Bertho I, Legall MC, Magnard J, Deschamps T, Capusa C, Stoian I, Barbulescu C, Santimbrean C, Dumitru D, Mircescu G, Kato S, Lindholm B, Yuzawa Y, Shiels PG, Hwang JC, Jiang MY, Lu YH, Wang CT, Chiou TTY, Lee YT, Ng HY, Lee CT, Kaminska D, Koscielska-Kasprzak K, Chudoba P, Mazanowska O, Zabinska M, Banasik M, Boratynska M, Lepiesza A, Korta K, Klinger M, Struijk-Wielinga T, Neelemaat F, Slieker T, Koolen M, Ter Wee PM, Weijs PJ\, Tsuchida K, Hirose D, Minakuchi J, Kawashima S, Tomo T, Lee JE, Yun GY, Choi HY, Lee S, Kim W, Jo IY, Ha SK, Kim HJ, Park HC, Migliori M, Scatena A, Cantaluppi V, Rosati A, Pizzarelli F, Panichi V, Shin BC, Kim HL, Chung JH, Malgorzewicz S, Chmmielewski M, Debska-Slizien A, Rutkowski B, Kolesnyk M, Stepanova N, Korol L, Kulizkyi M, Ablogina O, Migal L, Takahashi T, Kitajima Y, Hirano S, Naka A, Ogawa H, Aono M, Sato Y, Hoppe K, Schwermer K, K Ysz P, Kaczmarek J, Baum E, Sikorska D, Radziszewska D, Szkudlarek M, Olejniczak P, Pawlaczyk K, Lindholm B, Oko A, Severova Andreevska G, Trajceska L, Gelev S, Dzekova P, Selim G, Sikole A, Trajceska L, Severova Andreevska G, Rambabova Busletik I, Gelev S, Pavleska Kuzmanovska S, Dzekova Vidimiski P, Selim G, Sikole A, Borrelli S, De Simone E, Laurino S, De Simone W, Ahbap E, Kara E, Basturk T, Sakaci T, Koc Y, Sahutoglu T, Akgol C, Sevinc M, Atan Ucar Z, Unsal A, Girndt M, Fiedler R, Martus P, Pawlak M, Storr M, Boehler T, Templin M, Trojanowicz B, Ulrich C, Glomb M, Liehr K, Werner K, Zickler D, Schindler R, Vishnevskii KA, Gerasimchuk RP, Zemchenkov AY, Moura A, Madureira J, Alija P, Fernandes JC, Oliveira JG, Lopez M, Filgueiras M, Amado L, Sameiro-Faria M, Miranda V, Vieira M, Santos-Silva A, Costa E, Zaluska W, Kotlinska-Hasiec EKH, Zaluska A, Rzecki Z, Zadora P, Dabrowski W, Sikole A, Trajceska L, Amitov V, Busletik IR, Dzekova P, Selim G, Severova Andreevska G, Gelev S, Aicardi Spalloni V, La Milia V, Longhi S, Volo L, Del Vecchio L, Pontoriero G, Locatelli F, Martino F, Scalzotto E, Corradi V, Nalesso F, Zanella M, Brandolan A, Perez De Jose A, Abad S, Vega A, Reque J, Quiroga B, Lopez-Gomez JM, Esteve Simo V, Duarte Gallego V, Moreno Guzman F, Fulquet Nicolas M, Pou Potau M, Saurina Sole A, Carneiro Oliveira J, Ramirez De Arellano Serna M, Ahbap E, Kara E, Basturk T, Koc Y, Sakaci T, Sahutoglu T, Sevinc M, Atan Ucar Z, Unsal A, Van Diepen AT, Hoekstra T, De Mutsert R, Rotmans JI, De Boer M, Suttorp MM, Struijk DG, Boeschoten EW, Krediet RT, Dekker FW, Trigka K, Chouchoulis K, Musso CG, Kaza M, Mpimpi A, Pipili C, Kyritsis I, Douzdampanis P, Streja E, Rezakhani S, Rhee CM, Kalantar-Zadeh K, Streja E, Doshi M, Rhee C, Kovesdy C, Moradi H, Kalantar-Zadeh K, Dantas MA, Resende LL, Silva LF, Matos CM, Lopes GB, Lopes AA, Knap B, Arnol M, Buturovic J, Ponikvar R, Bren A, Codognotto M, Piasentin P, Conte F, Righetti M, Limido A, Tsuchida K, Michiwaki H, Minakuchi J, Kawashima S, Tomo T, Mutsaers HA, Jansen J, Van Den Broek PH, Verweij VG, Van Den Heuvel LP, Hoenderop JG, Masereeuw R, Clari R, Mongilardi E, Vigotti FN, Scognamiglio S, Consiglio V, Nazha M, Avagnina P, Piccoli G, Costelloe SJ, Freeman J, Keane DF, Lindley EJ, Thompson D, Kang GW, Lee IH, Ahn KS. DIALYSIS. PROTEIN-ENERGY WASTING, INFLAMMATION AND OXIDATIVE STRESS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rothuizen TC, Ocak G, Verschuren JJ, Dekker FW, Rabelink TJ, Jukema JW, Rotmans JI, Silva V, Raimann JG, Grassmann A, Marcelli D, Usvyat L, Canaud B, Kotanko P, Pecoits-Filho R, Consortium M, Strippoli GF, Sue YM, Tang CH, Chen TH, Hong CY, Ochi A, Ishimura E, Masuda M, Tsujimoto Y, Okuno S, Tabata T, Nishizawa Y, Inaba M, Moon Ki H, Do Hyoung K, Min Jee H, Hyun K, Wang Soo L, Su-Hyun K, Selim G, Stojceva-Taneva O, Tozija L, Dzekova-Vidimliski P, Trajceska L, Gelev S, Amitov V, Petronievic Z, Sikole A, Kee YK, Kim YL, Han JH, Oh HJ, Park JT, Han SH, Yoo TH, Kang SW, Okute Y, Shoji T, Sonoda M, Kuwamura Y, Tsujimoto Y, Tabata T, Shioi A, Tahara H, Emoto M, Inaba M, El Amrani M, Asserraji M, Benyahia M, Galloway PA, Yiu V, Hiemstra TF, Nilssen C, Zannad F, Jardine A, Schmieder R, Fellstrom B, Holdaas H, Mjoen G, Eftimovska - Otovic N, Babalj - Banskolieva E, Bogdanoska - Kostadinoska S, Grozdanovski R, Silva BC, Freitas GR, Silva VB, Abensur H, Luders C, Pereira BJ, Castro MC, Oliveira RB, Moyses RM, Elias RM, Perez De Jose A, Abad S, Vega A, Reque J, Quiroga B, Lopez-Gomez JM, Sasaki K, Yamguchi K, Hesaka A, Iwahashi E, Sakai S, Fujimoto T, Minami S, Fujita Y, Yokoyama K, Kidir V, Ersoy I, Altuntas A, Inal S, Do an A, Sezer MT, Azar H, Chacra D, Dabar G, Chelala D, Zhao L, Huang S, Liang T, Tang H, Turkmen K, Demirtas L, Akbas EM, Buyuklu M, Bakirci E, Kocyigit I, Ozcelik O, Guney I, Mumajesi S, Velaj A, Idrizi A, Pasko N, Cadri V, Barbullushi M, Bolleku E, Strakosh A, Cenaj A, Kacori V, Zekollari E, Rista E, Dusha D, Belba A, Thereska N, Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Naess H, Fellstrom B, Jardine AG, Schmieder RE, Zannad F, Holdaas H, Mjoen G, Sasaki K, Yamguchi S, Hesaka A, Iwahashi E, Sakai S, Fujimoto T, Minami S, Fujita Y, Yokoyama K, Bilevich O, Bunova S, Semchenko S, Schwermer K, Hoppe K, Klysz P, Baum E, Sikorska D, Radziszewska D, Sawatiuk P, Olejniczak P, Pawlaczyk K, Lindholm B, Oko A, El Amrani M, Asserraji M, Rbaibi A, El Kharass A, Benyahia M, Rroji ( Molla) M, Seferi S, Cafka M, Spahia N, Likaj E, Thereska N, Barbullushi M, Pelletier CC, Jolivot A, Kalbacher E, Panaye M, Bureau Du Colombier P, Juillard L, Burmeister JE, Mosmann CB, Bastos JP, Burmeister BO, Munaro G, Pereira JD, Youssef DW, Rosito GA. DIALYSIS CARDIOVASCULAR COMPLICATIONS 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu175] [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: 11/13/2022] Open
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Vlahu CA, De Graaff M, Struijk DG, Krediet RT, Shin HS, Ryu ES, Choi HS, Ryu DR, Choi KB, Kang DH, Sanchez-Alvarez E, Rodriguez-Suarez C, Galvan-.Hernandez JA, Kim YL, Kee YK, Lee MJ, Oh HJ, Park JT, Han SH, Yoo TH, Kang SW, Zhu F, Abbas SR, Bologa R, Lanto B, Kotanko P, Parikova A, Smit W, Struijk DG, Krediet RT, Rroji ( Molla) M, Seferi S, Cafka M, Thereska N, Huang CC, Wang IK, Shiao YT, Teixeira L, Sousa I, Rodrigues A, Mendonca D, Ueda A, Iwase M, Usui T, Hirayama A, Nagai K, Saito C, Yamagata K, La Milia V, Pontoriero G, Locatelli F, Kim SM, Kim TY, Lee JE, Teta D, Guillodo MP, Kolko-Labadens A, Lasseur C, Levannier M, Panaye M, Fouque D, HAMADA C, Hara K, Kang SH, Cho KH, Park JW, Yoon KW, Do JY, Dogan I, Biro Dr B, Zakar Dr G, Foldine Z, Staudt S, Martins AR, Vizinho R, Branco PQ, Gaspar MA, Barata JD, Sikorska D, Klysz P, Posnik B, Baum E, Hoppe K, Schwermer K, Wanic-Kossowska M, Frankiewicz D, Pawlaczyk K, Lindholm B, Oko A, Busuioc M, Trolliet P, Guerraoui A, Caillette-Beaudoin A, Hallonet P, Yang JO, Gursu M, Topcuoglu D, Koc LK, Yucel L, Sumnu A, Cebeci E, Doner B, Ozkan O, Behlul A, Koc L, Ozturk S, Kazancioglu R, Casas Parra AII, Gonzalez MTT, Sandoval DA, Carlota GC, Grinyo JMM, Tseng CH, Chao CT, Yen CJ, Chiang CK, Hung KY, Huang JW, Al Wakeel JS, Al Ghonaim M, Al Suwaida A, Al Harbi A, Makoshi Z, Abdullah S, Matsushita Y, Basic-Jukic N, Coen-Herak D, Martinovic Z, Radi -Antoli M, Kes P, Wu TJ, Chen JS, Lin SH, Shiang JC, Wu CC, Munteanu D, Gemene M, Mircescu G, Opatrna S, Popperlova A, Tesar V, Rychlik I, Viklicky O, Jin K, Park BS, Jeong HJ, Kim YW, Hogas S, Voroneanu L, Onofriescu M, Nistor I, Apetrii M, Siriopol D, Cujba M, Hogas M, Covic A. PERITONEAL DIALYSIS 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu174] [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: 11/12/2022] Open
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Połubinska A, Cwalinski J, Baum E, Bręborowicz A. N-Acetylglucosamine modulates function of the skin fibroblasts. Int J Cosmet Sci 2013; 35:472-6. [PMID: 23672714 DOI: 10.1111/ics.12067] [Citation(s) in RCA: 3] [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: 12/23/2012] [Accepted: 05/06/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Fibroblasts are an important component of the skin determining its properties. N-Acetylglucosamine (NAG) is the substrate for hyaluronan synthesis, and it also has anti-inflammatory and anti-senescent activity in mesothelial cells. METHODS We tested in in vitro-cultured human skin fibroblasts how supplementation of culture medium with NAG 10 mmol L(-1) changes properties of these cells. RESULTS Fibroblasts cultured in presence of NAG produced more proteins and that was mainly due to increased synthesis of collagen (+33% vs. control, P < 0.05). Hyaluronan synthesis was increased (+107% vs. control, P < 0.001), but interleukin-6 synthesis was reduced (-22% vs. control, P < 0.05). Fibroblasts cultured in medium with NAG 10 mmol L(-1) demonstrated improved ability to heal the injured layer of cells (+34% vs. control, P < 0.05). Additionally senescence of fibroblasts undergoing replicative ageing in the presence of NAG was less pronounced, as reflected by smaller increase in the population doubling time (-70% vs. control, P < 0.05). CONCLUSION We conclude that NAG induced changes in the skin fibroblasts' properties maybe important for prevention of the age-dependent changes in its structure and function.
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Affiliation(s)
- A Połubinska
- Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland
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Yayar O, Buyukbakkal M, Eser B, Yildirim T, Ercan Z, Erdogan B, Kali A, Merhametsiz O, Haspulat A, Akdag I, Ayli MD, Quach T, Tregaskis P, Menahem S, Koukounaras J, Mott N, Walker R, Zeiler M, Santarelli S, Degano G, Monteburini T, Agostinelli RM, Marinelli R, Ceraudo E, Grzelak T, Kramkowska M, Walczak M, Czyzewska K, Guney I, Turkmen K, Yazici R, Arslan S, Altintepe L, Yeksan M, Vaduva C, Popa S, Mota M, Mota E, Wan Md Adnan WAH, Zaharan NL, Moreiras-Plaza M, Blanco-Garcia R, Beato-Coo L, Cossio-Aranibar C, Martin-Baez I, Santos MT, Fonseca I, Santos O, Aguiar P, Rocha MJ, Carvalho MJ, Cabrita A, Rodrigues A, Guo Z, Lai X, Theodoridis M, Panagoutsos S, Thodis E, Karanikas M, Mitrakas A, Kriki P, Kantartzi K, Passadakis P, Vargemezis V, Vakilzadeh N, Pruijm M, Burnier M, Halabi G, Azevedo P, Santos O, Carvalho M, Cabrita A, Rodrigues A, Laplante S, Rutherford P, Shutov E, Isachkina A, Gorelova E, Troya MI, Teixido J, Pedreira G, Del Rio M, Romero R, Bonet J, Zhang X, Ma J, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Eloot S, Vanholder R, Van Biesen W, Heaf J, Pedersen C, Elgborn A, Arabaci T, Emrem G, Keles M, Kizildag A, Martino F, Amici G, Rodighiero MP, Crepaldi C, Ronco C, Tanaka H, Tsuneyoshi S, Yamasaki K, Daijo Y, Tatsumoto N, Al-Hilali N, Hussain N, Fathy V, Negm H, Alhilali M, Grzegorzewska A, Cieszynski K, Kaczmarek A, Sowinska A, Soleymanian T, Najafi I, Ganji MR, Ahmadi F, Saddadi F, Hakemi M, Amini M, Tong LNMN, Yongcheng HNMN, Qijun WNMN, Shaodong LNMN, Velioglu A, Albaz M, Arikan H, Tuglular S, Ozener C, Bakirdogen S, Eren N, Mehtap O, Bek SG, Cekmen MB, Yilmaz A, Cabana Carcasi MLL, Fernandez Ferreiro A, Fidalgo Diaz M, Becerra Mosquera V, Alonso Valente R, Buttigieg J, Borg Cauchi A, Rogers M, Buhagiar L, Farrugia Agius J, Vella MP, Farrugia E, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Kang SW, Choi KH, Sikorska D, Frankiewicz D, Klysz P, Schwermer K, Hoppe K, Nealis J, Kaczmarek J, Baum E, Wanic-Kossowska M, Pawlaczyk K, Oko A, Hiss M, Gerstein F, Haller H, Gueler F, Fukasawa M, Manabe T, Wan Q, He Y, Zhu D, Li J, Xu H, Yayar O, Eser B, Buyukbakkal M, Ercan Z, Erdogan B, Merhametsiz O, Yildirim T, Kali A, Haspulat A, Oztemel A, Akdag I, Ayli MD, Pilcevic D, Kovacevic Z, Maksic D, Paunic Z, Tadic-Pilcevic J, Mijuskovic M, Petrovic M, Obrencevic K, Rabrenovic V, Ignjatovic L, Terzic B, Jovanovic D, Chang CH, Chang YS, Busuioc M, Guerraoui A, Caillette-Beaudoin A, Bahte SK, Hiss M, Kielstein JT, Polinder-Bos H, Emmelot-Vonk M, Gaillard C. Peritoneal dialysis II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Bösner S, Keller H, Wöhner A, Wöhner C, Sönnichsen A, Baum E, Donner-Banzhoff N. Prevention of falls by outdoor-walking in elderly persons at risk (“power”) – a pilot study. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2011.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [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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Abstract
Phosphor thermometry is a semi-invasive surface temperature measurement technique utilising the luminescence properties of doped ceramic materials. Typically, these phosphor materials are coated onto the object of interest and are excited by a short UV laser pulse. Up to now, primarily Q-switched laser systems with repetition rates of 10 Hz were employed for excitation. Accordingly, this diagnostic tool was not applicable to resolve correlated temperature transients at time scales shorter than 100 ms. This contribution reports on the first realisation of a high-speed phosphor thermometry system employing a highly repetitive laser in the kHz regime and a fast decaying phosphor. A suitable material was characterised regarding its temperature lifetime characteristic and its measurement precision. Additionally, the influence of laser power on the phosphor coating was investigated in terms of heating effects. A demonstration of this high-speed technique has been conducted inside the thermally highly transient system of an optically accessible internal combustion engine. Temperatures have been measured with a repetition rate of 6 kHz corresponding to one sample per crank angle degree at 1000 rpm.
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Affiliation(s)
- N Fuhrmann
- Fachgebiet Reaktive Strömungen und Messtechnik, Center of Smart Interfaces, Technische Universität Darmstadt, Darmstadt, Germany.
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Albring C, Baum E, Beckermann M, Beckmann M, Blettner M, Böhm B, Brucker C, Dören M, Emons G, Foth D, Geisthövel F, Gudermann T, Hadji P, Kiesel L, Klemperer D, König K, Lindhoff-Last E, Ludolph A, Mueck A, Naß-Griegoleit I, Noss D, Ortmann O, Petri E, Rabe T, Regitz-Zagrosek V, Schulte H, Siedentopf F, Strowitzki T, Windler E. Hormontherapie in der Peri- und Postmenopause – Kurzversion der S3-Leitlinie. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0029-1241006] [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: 10/19/2022] Open
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Winter Y, Balzer‐Geldsetzer M, Spottke A, Reese JP, Baum E, Klotsche J, Rieke J, Simonow A, Eggert K, Oertel WH, Dodel R. Longitudinal study of the socioeconomic burden of Parkinson’s disease in Germany. Eur J Neurol 2010; 17:1156-1163. [DOI: 10.1111/j.1468-1331.2010.02984.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Winter
- Department of Neurology, Philipps ‐ University, Marburg
| | | | - A. Spottke
- Department of Neurology, Friedrich‐Wilhelms‐University, Bonn
| | - J. P. Reese
- Department of Neurology, Philipps ‐ University, Marburg
| | - E. Baum
- Department of General Practice/Family Medicine, Philipps ‐ University, Marburg
| | - J. Klotsche
- Department of Clinical Psychology and Psychotherapy, Technical University of Dresden, Dresden
| | - J. Rieke
- Neurological Practice, Giessen, Herborn
| | | | - K. Eggert
- Department of Neurology, Philipps ‐ University, Marburg
| | - W. H. Oertel
- Department of Neurology, Philipps ‐ University, Marburg
| | - R. Dodel
- Department of Neurology, Philipps ‐ University, Marburg
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Beutel RG, Baum E. A longstanding entomological problem finally solved? Head morphology ofNannochorista(Mecoptera, Insecta) and possible phylogenetic implications. J ZOOL SYST EVOL RES 2008. [DOI: 10.1111/j.1439-0469.2008.00473.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [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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Beyer GP, Kry S, Rini C, Baum E, Mann G, Espenhahn E. SU-GG-T-303: Evaluation of An Implantable MOSFET Dosimeter for Use with Hypo-Fractionated External Beam Treatments. Med Phys 2008. [DOI: 10.1118/1.2962055] [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: 11/07/2022] Open
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Baum E, Donner-Banzhoff N. [Angina pectoris]. MMW Fortschr Med 2007; 149:39-40. [PMID: 17992903 DOI: 10.1007/bf03365152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Affiliation(s)
- E Baum
- Abt. für Allgemeinmedizin, Präventive und Rehabilitative Medizin der Universität Marburg.
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Sönnichsen A, Rambeck M, Donner-Banzhoff N, Baum E. Cholesterinbestimmung beim „Check ab 35”: Hat die Untersuchung Konsequenzen? ACTA ACUST UNITED AC 2006. [DOI: 10.1055/s-2006-942198] [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: 10/24/2022]
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Dain L, Braun-Moscovici Y, Baum E, Nahir AM, Hoffer E. Modification of neutrophil function by plasma of rheumatoid arthritis patients treated with infliximab. Clin Exp Rheumatol 2006; 24:38-44. [PMID: 16539817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
OBJECTIVE To examine whether the release of superoxide anions from neutrophils of healthy donors was affected when incubated with plasma from infliximab-treated rheumatoid arthritis (RA) patients. METHODS Fifteen consecutive seropositive RA patients were treated with 3mg/kg infliximab on weeks 0, 2, 6, and 14. Disease activity was assessed by DAS28 score and by IL-6 level. Neutrophils from healthy donors were incubated with plasma drawn before each infliximab treatment. PMA-stimulated superoxide release was measured by the ferricytochrome C reduction method. RESULTS 53% of the patients had a favorable clinical response. IL-6 levels showed a significant decline at week two, with a gradual increase thereafter. Treatment with infliximab did not change the superoxide production. However, when the group was divided retrospectively to responders (DeltaDAS28 > -1.2) and non-responders (DeltaDAS28 < -1.2), two different patterns were seen, although the pre-treatment levels were similar: Among the responders IL-6 remained low at its 2 weeks level till week 14, while in the non responders IL-6 increased 3 times (P < 0.03) from week 2 to 14. The responders showed mild, but continuous, reduction of superoxide release, while in the non-responders it increased significantly from week 2 on. CONCLUSION The reduction in IL-6 in RA sera following anti-TNFalpha therapy has little influence on the capacity of these sera to stimulate healthy neutrophils to produce superoxide, suggesting the existence of non-TNFalpha non-IL-6 dependent neutrophil-stimulating mediators in RA sera. The increasing level of IL-6 among the non-responders after initial dramatic decline might represent an escape phenomenon, possibly caused by alternative mediator(s). Clinically, this IL-6 "escape" might be used as a tool for early identification of responders from non-responders.
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Affiliation(s)
- L Dain
- B. Shine Department of Rheumatology, Israel
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Krones T, Keller H, Sadowski E, Soennichsen A, Baum E, Donner-Banzhoff N. ARRIBA Herz – Erste Ergebnisse eines Instrumentes zur absoluten Risikoberechnung und partizipativen Entscheidungsfindung in der Herz-Kreislauf- Primärprävention. Gesundheitswesen 2005. [DOI: 10.1055/s-2005-920660] [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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Sönnichsen AC, Donner-Banzhoff N, Baum E. [Food-drug interactions: an underestimated risk]. MMW Fortschr Med 2005; 147:31-4. [PMID: 16302488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
With only few exceptions, administration of medicaments should, in principle, be independent of food intake (at least half an hour before or two hours after eating). This ensures uniform and assessable bioavailability. However, it also entails the risk that the patient is more likely to forget to take medication postponed to 2 hours after a meal, than when it is directly coupled to a meal. Certain foodstuffs or food constituents, such as, for example, grapefruit, Seville orange juice, red wine, alcoholic drinks in general, or large quantities of caffeine and garlic should be avoided during drug treatment. In addition, specific interactions with certain drugs must also be taken into account (e.g. MAO inhibitors and tyramine, curamine and vitamin K).
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Affiliation(s)
- A C Sönnichsen
- Abteilung für Allgemeinmedizin, Präventive und Rehabilitative Medizin, Philipps-Universität Marburg.
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Sadowski EM, Eimer C, Keller H, Krones T, Sönnichsen AC, Baum E, Donner-Banzhoff N. Evaluation komplexer Interventionen: Implementierung von ARRIBA-Herz☺, einer Beratungsstrategie für die Herz-Kreislaufprävention. ACTA ACUST UNITED AC 2005. [DOI: 10.1055/s-2005-872475] [Citation(s) in RCA: 2] [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: 10/25/2022]
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Maisel P, Donner-Banzhoff N, Baum E, Dörr C. [10 minute consultation: chronic fatigue]. MMW Fortschr Med 2004; 146:67-8. [PMID: 15347065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
- P Maisel
- Westfälische Wilhelms-Universität Münster
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Baum E. Management of hypopharyngeal and esophageal perforations in children. Otolaryngol Head Neck Surg 2003. [DOI: 10.1016/s0194-5998(03)00970-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Evans SM, Lew R, Kochman ML, Wileyto EP, Baum E, Safford KM, Koch CJ. Human esophageal cancer is distinguished from adjacent esophageal tissue by tissue cysteine concentrations. Dig Dis Sci 2002; 47:2743-50. [PMID: 12498295 DOI: 10.1023/a:1021009322843] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Recent studies have suggested that cysteine, in addition to glutathione, may play a role in the genesis, pathobiology, and treatment response of rodent and human cancers. We examined the relative concentrations of cysteine and glutathione in human esophageal cancer and adjacent, minimally involved esophageal tissue. Small biopsies from tumors and adjacent esophageal tissues were placed into cold acid to allow extraction of low-molecular-mass compounds and simultaneous precipitation of macromolecules. Supernatants were analyzed by high-performance liquid chromatography with electrochemical detection for thiol content. While there was no statistically significant difference between the glutathione content of tumor versus adjacent tissue (2.2 mM vs 2.1 mM, respectively), tumor tissue had significantly higher levels of cysteine than adjacent tissue (0.21 mM vs 0.13 mM, respectively). In conclusion, cysteine content distinguishes tumor from adjacent more normal tissue.
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Affiliation(s)
- S M Evans
- University of Pennsylvania, School of Medicine, Department of Radiation Oncology, Philadelphia, Pennsylvania 19104, USA
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Abstract
BACKGROUND Several clinical prediction scores have been developed to help practitioners assess the probability of streptococcal throat infection. Prior to this study, it was not known how reliably doctors assess the signs that contribute to these decision aids. OBJECTIVE The aim of this study was to measure the inter-observer reliability of clinical findings related to sore throat. METHODS Consecutive patients presenting with sore throat in five primary care practices in Germany took part (n = 126). Each patient was assessed independently by two doctors with regard to lymph nodes, pharynx, soft palate and tonsils. RESULTS Agreement among practitioners was not satisfactory. CONCLUSIONS Results suggest that the performance of clinical scoring systems can be improved by training on how to elicit relevant clinical signs. Our findings cast some doubt on the effectiveness of under- and post-graduate training in this area.
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Affiliation(s)
- N Donner-Banzhoff
- Department of Primary Care, Rehabilitation and Preventive Medicine, University of Marburg, Blitzweg 16, D-35033 Marburg, Germany.
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Breborowicz A, Pawlaczyk-Kuzlan M, Pawlaczyk K, Baum E, Tam P, Wu G. Replacement of glucose with N-acetylglucosamine in peritoneal dialysis fluid-experimental study in rats. Perit Dial Int 2002; 21 Suppl 3:S365-7. [PMID: 11887857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Glucose is still used as an osmotic solute in peritoneal dialysis fluids, despite evidence of its local (peritoneal) and systemic toxicities. However a constant search is underway for a new, more biocompatible osmotic solute for peritoneal dialysis fluids. OBJECTIVE The present study evaluated N-acetylglucosamine (NAG) in a concentration of 220 mmol/L as an alternative to glucose for the osmotic solute in peritoneal dialysis fluid, during chronic peritoneal dialysis in rats. METHODS For 8 weeks, male Wistar rats were infused with glucose-based or NAG-based dialysis fluid. Intraperitoneal inflammation and peritoneal permeability and morphology were evaluated in all rats during the study. RESULTS Repeated intraperitoneal infusion of the NAG-based dialysis fluid resulted in a weaker intra-abdominal inflammatory reaction as compared with the reaction in rats infused with glucose-based dialysis solution. At the end of the study, the concentration of hyaluronan in the peritoneal interstitium obtained from NAG-treated rats was higher than that found in the interstitium taken from animals exposed to dialysis fluid containing glucose. Also, peritoneal permeability to total protein was lower in NAG-treated rats. CONCLUSION As an alternative to glucose, NAG used for the osmotic solute in peritoneal dialysis solution decreases the intraperitoneal inflammatory reaction induced by the process of peritoneal dialysis and, indirectly (owing to the increased hyaluronan content in the peritoneal interstitium), diminishes peritoneal permeability to protein.
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Affiliation(s)
- A Breborowicz
- Department of Pathophysiology, Poznan Medical School, Poland.
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Köhnlein H, Purath A, Klemp C, Baum E, Krossing I, Stösser G, Schnöckel H. Synthesis and characterization of an Al(69)(3-) cluster with 51 naked Al atoms: analogies and differences to the previously characterized Al(77)(2-) cluster. Inorg Chem 2001; 40:4830-8. [PMID: 11531428 DOI: 10.1021/ic0104297] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A disproportionation process of a metastable AlCl solution with a simultaneous ligand exchange-Cl is substituted by N(SiMe(3))(2)-leads to a [Al(69)[N(SiMe(3))(2)](18)](3-) cluster compound that can be regarded as an intermediate on the way to bulk metal formation. The cluster was characterized by an X-ray crystal structural analysis. Regarding its structure and the packing within the crystal, this metalloid cluster with 4 times more Al atoms than ligands is compared to the [Al(77)N(SiMe(3))(2)](20)](2-) cluster that has been published four years ago. Although there is a similar packing density of the Al atoms in both clusters as well as in Al metal, the X-ray structural analysis shows significant differences in topology and distance proportions. The differences between these-at a first glance almost identical-Al clusters demonstrate that results of physical measuring, e.g., of nanostructured surfaces which carry supposedly identical cluster species, have to be interpreted with great caution.
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Affiliation(s)
- H Köhnlein
- Institut für Anorganische Chemie, Universität Karlsruhe (TH), Engesserstrasse, Geb. 30.45 D-76128 Karlsruhe, Germany
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Donchev A, Schnepf A, Stösser G, Baum E, Schnöckel H, Blank T, Wiberg N. [Ga18(SitBu3)8] and [Ga22(SitBu3)8]--syntheses and structural characterization of novel gallium cluster compounds. Chemistry 2001; 7:3348-53. [PMID: 11531121 DOI: 10.1002/1521-3765(20010803)7:15<3348::aid-chem3348>3.0.co;2-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The novel neutral gallium cluster compounds [Ga18R*8] (1) and [Ga22R*8] (2) are obtained by warming up a metastable solution of gallium(I) bromide in THF/C6H5CH3 after addition of equimolar amounts of supersilyl sodium NaR* from -78 degrees C to room temperature (R* = SitBu3 = supersilyl). From X-ray structure analyses, the observed arrangements of the 18 and 22 Ga atoms in 1 and 2, respectively, are comparable with an 18 atom section of the beta-Ga modification, or show at least some kind of relationship to a 22 atom section of the Ga-III modification. This allows a description of both the clusters as metalloid. The topology of the atoms in 2 is also well explained by the Wade-Mingos rules as an eightfold capped closo-Ga14 cluster, whereby the Ga atoms of Ga14 occupy the center and the corners of a cuboctahedron with one Ga3 face replaced by a Ga4 face. Some concepts are presented about the formation mechanism, the cluster growth, and the metalloid character of the two Ga cluster compounds.
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Affiliation(s)
- A Donchev
- Institut für Anorganische Chemie der Universität Karlsruhe, Germany
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Knolker HJ, Baum E, Reddy KR. Transition metal complexes in organic synthesis, part 59.(1) First enantioselective total synthesis of lavanduquinocin, a potent neuronal cell protecting substance from streptomyces viridochromogenes. Chirality 2000; 12:526-8. [PMID: 10824182 DOI: 10.1002/(sici)1520-636x(2000)12:5/6<526::aid-chir40>3.0.co;2-f] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Using (R)-propene oxide as a chiral building block a convergent enantioselective synthesis of the potent neuronal cell protecting alkaloid lavanduquinocin has been accomplished by the iron-mediated one-pot construction of the carbazole framework.
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Affiliation(s)
- H J Knolker
- Institut fur Organische Chemie, Universitat Karlsruhe, Karlsruhe, Germany.
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Doriat C, Köppe R, Baum E, Stösser G, Köhnlein H, Schnöckel H. Molecular lattice fragment of LiI. Crystal structure and ab initio calculations of [LiI(NEt3)]4. Inorg Chem 2000; 39:1534-7. [PMID: 12526460 DOI: 10.1021/ic9903432] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Numerous crystal structures of donor-stabilized LiX species are known, but only two of them show a heterocubane arrangement [LiX(Do)]4 (X = Cl, Br; Do = donor) in the solid state. Herein we report the X-ray crystal structure of [LiI(NEt3)]4 (1), obtained by the reaction of LiN(SiMe3)2 with either GaI or All in the presence of NEt3. The structural backbone of 1 is a [LiI]4 heterocubane core, which is compared to [LiX]4 (X = Cl, Br) as well as to [Li(CH3)]4. The energetics of the formation of 1 and its stability with respect to solid LiI is rationalized and additionally supported by DFT (density functional theory) calculations.
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Affiliation(s)
- C Doriat
- Universität Karlsruhe, Institut für Anorganische Chemie, Engesserstr. Geb. 30.45, D-76128 Karlsruhe, Germany
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Affiliation(s)
- H Köhnlein
- Institut für Anorganische Chemie der Universität Karlsruhe (TH) Engesserstrasse, Geb. 30.45, 76128 Karlsruhe (Germany)
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Keller S, Donner-Banzhoff N, Kaluza G, Baum E, Basler HD. Improving physician-delivered counseling in a primary care setting: lessons from a failed attempt. Educ Health (Abingdon) 2000; 13:387-397. [PMID: 14742065 DOI: 10.1080/135762800750059507] [Citation(s) in RCA: 8] [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: 05/24/2023]
Abstract
BACKGROUND The high prevalence of behavioral risk factors for cardiovascular diseases demands innovative approaches to achieving behavior change. Primary care physicians are in an ideal position for offering such interventions. PURPOSE To evaluate whether training of primary care physicians in counseling skills based on the Transtheoretical Model (TTM) leads to motivational and behavioral changes in their patients. METHOD Seventy-four primary care physicians in Germany were randomly assigned to either an intervention condition (one day of training in TTM-based counseling plus brochures matched to their patients' "stages of change") or a control condition (usual care). Baseline and 12-month follow-up data were collected from 305 of their patients who signed up for a health check-up. OUTCOME MEASURE Patients' movements across the stages of change for smoking, diet, exercise and stress management. RESULTS After 12 months, patients of physicians in the intervention group did not show more movement through the stages of change for any of the behaviors than did patients of control physicians. Additionally, there were no differences between groups in counseling frequency, counseling intensity, or patient satisfaction with counseling. CONCLUSIONS A high dropout rate at follow-up and resulting "power" problems limit the possible conclusions. The high numbers of patients in early stages of change and the minimal improvement over time underline the need for improving motivational counseling skills of primary care physicians in Germany. In our study the dissemination of these strategies failed. We offer lessons we feel can be learned from this outcome. Further studies should focus on ways to enhance the process of educating physicians for implementing counseling strategies in primary care settings.
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Affiliation(s)
- S Keller
- Center for Methodology and Health Research, Philipps-University, Marburg, Germany. skellermailer.uni-marburg.de
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Abstract
A stereoselective synthesis of the disilyl derivatives 3 is achieved by the title reaction, an unprecedented Lewis acid promoted domino reaction, between the cross-conjugated dienone 1 and the allylsilanes 2. The configurations of the five stereogenic centers of this novel ring system are established in the first step of the reaction sequence, the double [3+2] cycloaddition.
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Affiliation(s)
- HJ Knölker
- Institut für Organische Chemie der Universität, Richard-Willstätter-Allee, D-76131 Karlsruhe (Germany)
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Barach P, Baum E. Implantable defibrillators, pacemakers, and electronic antitheft devices. N Engl J Med 1999; 340:1117-8. [PMID: 10206833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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