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Kroneberg D, Al-Fatly B, Morkos C, Steiner LA, Schneider GH, Kühn A. Kinematic Effects of Combined Subthalamic and Dorsolateral Nigral Deep Brain Stimulation in Parkinson's Disease. J Parkinsons Dis 2024; 14:269-282. [PMID: 38363617 DOI: 10.3233/jpd-230181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Background Additional stimulation of the substantia nigra (SNr) has been proposed to target axial symptoms and gait impairment in patients with Parkinson's disease (PD). Objective This study aimed to characterize effects of combined deep brain stimulation (DBS) of the subthalamic nucleus (STN) and SNr on gait performance in PD and to map stimulation sites within the SNr. Methods In a double-blinded crossover design, 10 patients with PD and gait impairment underwent clinical examination and kinematic assessment with STN DBS, combined STN+SNr DBS and OFF DBS 30 minutes after reprogramming. To confirm stimulation within the SNr, electrodes, active contacts, and stimulation volumes were modeled in a common space and overlap with atlases of SNr was computed. Results Overlap of stimulation volumes with dorsolateral SNr was confirmed for all patients. UPDRS III, scoring of freezing during turning and transitioning, stride length, stride velocity, and range of motion of shank, knee, arm, and trunk as well as peak velocities during turning and transitions and turn duration were improved with STN DBS compared to OFF. On cohort level, no further improvement was observed with combined STN+SNr DBS but additive improvement of spatiotemporal gait parameters was observed in individual subjects. Conclusions Combined high frequency DBS of the STN and dorsolateral SNr did not consistently result in additional short-term kinematic or clinical benefit compared to STN DBS. Stimulation intervals, frequency, and patient selection for target symptoms as well as target region within the SNr need further refinement in future trials.
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Affiliation(s)
- Daniel Kroneberg
- Department of Neurology with Experimental Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Bassam Al-Fatly
- Department of Neurology with Experimental Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Cornelia Morkos
- Department of Neurology with Experimental Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Leon Amadeus Steiner
- Department of Neurology with Experimental Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Gerd-Helge Schneider
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - A Kühn
- Department of Neurology with Experimental Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Berlin School of Mind and Brain, Charite - Universitatsmedizin Berlin, Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE), Charité - Universitätsmedizin Berlin, Berlin, Germany
- NeuroCure, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Einstein Center for Neurosciences Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
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López-Samanes Á, Pérez-Lopez A, Morencos E, Muñoz A, Kühn A, Sánchez-Migallón V, Moreno-Pérez V, González-Frutos P, Bach-Faig A, Roberts J, Domínguez R. Beetroot juice ingestion does not improve neuromuscular performance and match-play demands in elite female hockey players: a randomized, double-blind, placebo-controlled study. Eur J Nutr 2023; 62:1123-1130. [PMID: 36401662 DOI: 10.1007/s00394-022-03052-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 11/03/2022] [Indexed: 11/20/2022]
Abstract
PURPOSE Beetroot juice is a dietary supplement that contains high levels of inorganic nitrate (NO3-) and that its intake has proven effective at increasing blood nitric oxide (NO) concentrations improving endurance performance. However, the effect of this supplement in team sport performance, especially in female athletes, has been barely studied. This study aimed to compare the acute effects of beetroot juice supplementation on neuromuscular performance and match-play demands in elite female field hockey players. METHODS Eleven elite female hockey players (22.8 ± 5.1 years) belonging to a bronze team medal in Eurohockey Club Champions Cup participated in this study. Participants were randomly divided into two groups undergoing a test battery with beetroot juice (70 mL, 6.4 mmol NO3-) or placebo (70 mL, 0.04 mmol NO3-) in two different days with one week between protocols. The neuromuscular test battery consisted of a countermovement jump, isometric handgrip strength (i.e., dominant hand), 20 m-sprint and repeated sprint ability test (RSA). Afterward, a simulated hockey match play (2 × 12.5 min) was performed and recorded by Global Positioning System (GPS). RESULTS No statistically significant improvements were observed in any physical parameters analysed comparing beetroot juice compared to placebo ingestion, countermovement jump (p = 0.776, ES = 0.16), isometric handgrip strength (p = 0.829; ES = - 0.08), 20 m sprint test (p = 0.227; ES = - 0.23), mean repeated sprint ability (p = 0.955, ES = 0.03) and in any physical match demands measured by GPS (p = 0.243-1.000; ES = 0.02-0.47). CONCLUSION Acute beetroot juice supplementation did not produce any statistically significant improvement in neuromuscular performance or match-play demands in elite female field hockey players. TRIAL REGISTRATION The study was registered in ClinicalTrials.gov with the following ID: NCT05209139. The study was retrospectively registered by 26 January 2022.
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Affiliation(s)
- Álvaro López-Samanes
- Exercise Physiology Group, School of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria Carretera Pozuelo a Majadahonda, Km 1.800, 28223, Pozuelo de Alarcón, Madrid, Spain.
| | - Alberto Pérez-Lopez
- Facultad de Medicina y Ciencias de la Salud, Departamento de Ciencias Biomédicas, Área de Educación Física y Deportiva, Universidad de Alcalá, Madrid, Spain
| | - Esther Morencos
- Exercise and Sport Sciences, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Alejandro Muñoz
- Exercise Physiology Group, School of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria Carretera Pozuelo a Majadahonda, Km 1.800, 28223, Pozuelo de Alarcón, Madrid, Spain
| | - Adriaan Kühn
- Institute of International Politics, Universidad Francisco de Vitoria, Madrid, Spain
| | - Violeta Sánchez-Migallón
- Exercise Physiology Group, School of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria Carretera Pozuelo a Majadahonda, Km 1.800, 28223, Pozuelo de Alarcón, Madrid, Spain
| | - Víctor Moreno-Pérez
- Center for Translational Research in Physiotherapy, Department of Pathology and Surgery, Universidad Miguel Hernández, San Juan, Spain
| | - Pablo González-Frutos
- Exercise and Sport Sciences, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Anna Bach-Faig
- FoodLab Research Group, Faculty of Health Sciences, Universitat Oberta de Catalunya, Barcelona, Spain
| | - Justin Roberts
- Cambridge Centre for Sport and Exercise Sciences, School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, UK
| | - Raúl Domínguez
- Departamento de Motricidad Humana y Rendimiento Deportivo, Universidad de Sevilla, Seville, Spain
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Habets J, Spooner R, Mathiopoulou V, Lofredi R, Feldmann L, Busch J, Florin E, Kühn A. P-96 Accelerometer-data-driven assessment of UPDRS finger tapping for Parkinson disease monitoring. Clin Neurophysiol 2023. [DOI: 10.1016/j.clinph.2023.02.113] [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: 03/08/2023]
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Schwartze B, Kühn A, Fuchs S, Höfer F, Keil A, Weiler G, Koppe T, Raddatz A. Opening up New University Learning Experiences with Virtual Reality. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202255098] [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)
- B. Schwartze
- Hochschule Biberach, University of Applied Sciences Hubertus-Liebrecht-Str. 35 88400 Biberach Germany
| | - A. Kühn
- Hochschule Biberach, University of Applied Sciences Hubertus-Liebrecht-Str. 35 88400 Biberach Germany
| | - S. Fuchs
- Northdocks GmbH Niederstr. 18 40789 Monheim am Rhein Germany
| | - F. Höfer
- Northdocks GmbH Niederstr. 18 40789 Monheim am Rhein Germany
| | - A. Keil
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
| | - G. Weiler
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
| | - T. Koppe
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
| | - A. Raddatz
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
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Samanes AL, Moreno-Perez V, Sánchez-Migallón V, González-Frutos P, Morencos E, Kühn A, Muñoz A, Pérez-López A, Domínguez R. Dietary Nitrate Does Not Improve Neuromuscular Performance And Match-play Demands In Elite Female Hockey Players. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000883200.62030.47] [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: 11/21/2022]
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Horneff G, Dressler F, Windschall D, Mrusek S, Hospach T, Kühn A, Haller M, Von Bismarck P, Emminger W, Ruehmer P, Hufnagel M, Klein A. POS0170 EXPERIENCES WITH COVID-19 INFECTIONS IN GERMAN PEDIATRIC RHEUMATOLOGY CENTERS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1881] [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
BackgroundAlthough the risk for severe COVID-19 progression in children is low, this may be aggravated by the underlying disease and/or immunosuppressive drugs.ObjectivesWe analyzed clinical data of COVID-19 cases among paediatric patients with rheumatic diseases reported to the BIKER registry.MethodsThe main task of the German BIKER (Biologics in Pediatric Rheumatology) registry is to monitor the safety of biologics therapies in JIA. After the onset of the COVID-19 pandemic, the survey was expanded with a standardized form to proactively interview all participating centers about the occurrence, presentation, and outcome of SARS-CoV-2- infections in children with rheumatic diseases. Interviews were conducted with 68 centers initially weekly and later biweekly.ResultsA total of 68 centres participated in the survey. Clinical data from 194 COVID-19 cases reported to the BIKER registry from 41 German and 1 Austrian pediatric rheumatology institutions between February 2020 and December 2021 were analyzed. Juvenile idiopathic arthritis (JIA, n=144) was the most common diagnosis followed by genetic autoinflammation (n=18; i.e. FMF, TRAPS, CAPS, HIDS, DADA2), systemic autoimmune diseases (n=11; i.e. SLE, dermatomyositis, vasculitis) and 16 with other rheumatic diseases (i.e. CRMO, Uveitis). 5 patients with no rheumatic disease were excluded. 104 (54%) patients were receiving conventional DMARDs, 81 (43%) received biologics, mainly TNF inhibitors (n=66 (35%)).Of the 189 rheumatic patients with SARS-CoV2 infection, 123 (63%) were female. The mean age was 12.4+/-4.4 years in females and 13.2+/-4.1 in males. The duration of SARS-Co2 infection associated symptoms was 13.8+/-15.3 days (max. 113 days), in 35 (43%) patients they lasted for > 12 days. 46 (24%) were asymptomatic. Patients with autoinflammation and systemic autoimmunopathies reported more symptoms such as fever, head and throat ache. 4 patients only complained about dyspnea.Only 3 patients were hospitalized and received Oxygen-supplementation. The only patients admitted to ICU, received ventilation but succumbed. This 3½-year-old patient, initially diagnosed with systemic JIA, developed fatal disease with intracranial edema and respiratory failure, as well as typical pulmonary texture changes. Prior to her SARS-CoV-2 infection, the patient was treated with MTX and low-dose steroids. Genetic testing revealed a so far unrecognized congenital immunodeficiency.In the total JIA cohort, treatment with corticosteroids, conventional DMARDs, biologics or combinations did not influence the number of reported symptoms or the favorable outcome of the cohort. However, the duration of symptoms was lower in the TNF-treated cohort (10.4+/-6.4 days vs. 15.7 +/- 19.7 days). In the cohort with autoinflammation, fever was observed in 11 (61%). Those 6 who received IL-1-inhibitors did not show a different outcome than those 12 who did not. No case of PIMS/MISC in children with rheumatic diseases was reported.ConclusionExcept for one patient with congenital immunodeficiency who died from her COVID-19 infection, no case of severe COVID-19 was reported in our cohort. At the time of infection, over 80% of patients in our cohort had been treated with conventional DMARDs and/or biologics. This did not appear to have a negative impact on the severity or outcome of SARS-CoV2 infection. Interestingly, no case of PIMS/MISC was observed.Disclosure of InterestsGerd Horneff Speakers bureau: Novartis, Pfizer, Janssen, Grant/research support from: Pfizer, Novartis, Roche, MSD, Frank Dressler Speakers bureau: Pfizer, Novartis, Abbvie, Paid instructor for: Advisory boards Novartis, Mylan, Daniel Windschall Speakers bureau: Pfizer, Novartis, Abbvie, MEDAC, Canon, Grant/research support from: Novartis, Pfizer, Sonja Mrusek: None declared, Toni Hospach: None declared, Alexander Kühn: None declared, Maria Haller: None declared, Philipp von Bismarck: None declared, Wolfgang Emminger: None declared, Peggy Ruehmer: None declared, Markus Hufnagel: None declared, Ariane Klein Speakers bureau: Novartis
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Klein A, Windschall D, Emminger W, Berendes R, Kuemmerle-Deschner J, Trauzeddel R, Rietschel C, Kühn A, Hufnagel M, Sailer-Hoeck M, Hospach T, Haller M, Mrusek S, Sengler C, Minden K, Horneff G. POS1202 EXPERIENCE WITH COVID-19 IN GERMAN PAEDIATRIC RHEUMATOLOGY CENTRES. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2045] [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: 11/04/2022]
Abstract
Background:COVID-19 is a major challenge worldwide. Although the risk for a severe disease course is low among children with COVID-19, symptoms may be exacerbated by underlying disease and/or immunosuppressive medication. We analysed clinical data from COVID-19 cases in among pediatric patients with juvenile idiopathic arthritis (JIA) in Germany reported to the BIKER registry.Objectives:This is an analysis of clinical data for 56 COVID-19 cases reported to the German BIKER registry from 29 German pediatric rheumatology centers and clinics from February 2020 to January 2021.Methods:The major task of the German BIKER (Biologics in Paediatric Rheumatology) Registry is surveillance of biologics used in pediatric rheumatology patients. Following the start of the COVID-19 pandemic in Germany, a survey was established to proactively interview all participating centers regarding the occurrence, presentation and outcome of SARS-CoV-2-infected children with rheumatic diseases. Initially, the interviews were conducted in weekly intervals, later bi-weekly.A standardized Adverse Event of Special Interest form was developed requesting biographic data, pre-treatment, current medication, data on clinical presentation, course, treatment and outcome of COVID-19 pediatric rheumatology patients.Results:In all, 56 patients with JIA and SARS-CoV-2 infection were reported (Table 1). Of these patients, 71% were 12 or more years old.Table 1.Patient characteristics. COVID-19 positive patients.JIA patients, n=56n (%)Age 0-5 years / 6-11years / 12-18years3 (5.4) / 13 (23.2) / 40 (71.4)JIA category•Systemic JIA5 (8.9)•Oligoarthritis JIA9 (16)•Polyarticular JIA32 (57)•Enthesitis-related JIA2 (3.6)•Psoriatic JIA1 (1.8)•Unknown7 (12.5)Uveitis (concomitant)4 (7.1)Treatment•DMARD / MTX23/ 22 (41/39)•Biologics29 (52)•TNF inhibitors20 (36)•Tocilizumab5 (8.9)•Abatacept1 (1.8)•Anakinra1 (1.8)•Ustekinumab1 (1.8)•JAK inhibitors1 (1.8)•Steroids5 (8.9)Asymptomatic13 (23.2)Hospitalized/ICU/Ventilation/Death1/1/1/1 (1.8)At the time of infection, 41% of the patients received conventional DMARDs and 52% received biologics (Table 1). Forty-four patients (79%) received either a conventional DMARD or a biologic. Most patients had a polyarticular course of their JIA (57%).In 49 of the 56 cases (88%) COVID-19 was detected directly by PCR (n=46), by antigen test only (n=1) or an undisclosed method (n= 2). Six patients had detectable SARS-CoV2 antibodies and reported to have had typical symptoms. One patient tested negative but developed typical symptoms at approximately the same time a positive SARS-CoV-2 test was returned for a family member.Symptoms were reported in 43 of the 56 patients (77%): fever n=15, rhinitis n=14, cough n=12, headache n=10, loss of sense of taste and/or smell n=9, pharyngitis n=8, fatigue n=5, musculoskeletal pain n=5, GI symptoms n=2 (abdominal pain n=1, diarrhoea n=1), dizziness n=3, encephalitis/seizure/respiratory failure/death n=1. Thirteen patients (23%) were asymptomatic.A 3½ -year-old female patient initially diagnosed with systemic JIA developed intracranial oedema and respiratory failure. Her SARS-CoV2 PCR test was positive and pulmonary imaging displayed typical changes in lung texture. Before her SARS-CoV-2 infection, the patient was treated with methotrexate and low-dose steroids. Unfortunately, she died three days following hospital admission. Genetic testing revealed an inborn immunodeficiency. Except for this one patient, all other cases were treated as outpatients and no deaths were reported.Conclusion:Apart from one patient with an inborn immunodeficiency who died from her COVID-19 infection, no case of hospitalization or severe COVID-19 was reported in our cohort of JIA patients. At the time of COVID-19 diagnosis, nearly 80% of patients in our cohort had been treated with conventional DMARD and/or biologics. This seemed not to have a negative effect on severity or outcome of SARS-CoV2 infection.Acknowledgements:Thanks also for contributing Reports for this analysis to: Normi Brück, Frank Dressler, Ivan Foeldvari, Tilman Geikowski, Hermann Girschick, Johannes-Peter Haas, Tilmann Kallinich, Bernd-Ulrich Keck, Eggert Lilienthal, Anna-Hedrich Müller, Ulrich Neudorf, Nils Onken, Peggy Rühmer.Disclosure of Interests:None declared.
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Baraliakos X, Tsiami S, Kühn A, Fruth M, Braun J. POS0038 THE INFLUENCE OF AGE ON THE PREVALENCE OF INFLAMMATORY AND POST-INFLAMMATORY MRI LESIONS IN THE SACROILIAC JOINTS OF PATIENTS WITH AND WITHOUT AXIAL SPONDYLOARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3154] [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:Axial spondyloarthritis (axSpA) is clinically characterized by chronic inflammatory back pain and by inflammatory and structural changes in the sacroiliac joint (SIJ) as assessed by magnetic resonance imaging (MRI). Several studies have reported high rates of bone marrow edema (BME) suggestive of inflammatory SIJ changes in up to 20% of individuals in the general population <45 years. An update of the definition of a positive MRI of the SIJ in axSpA for classification purposes, based on the number of slices or quadrants showing BME or structural changes such as erosions or fat lesions (FL), was recently published by ASAS.Objectives:To compare the influence of age on the prevalence of inflammatory and structural MRI changes in the SIJ of patients with chronic low back pain diagnosed with axSpA or non-SpA.Methods:MRIs of the SIJ of patients referred for differential diagnosis of back pain who were finally diagnosed with axSpA or not by experienced rheumatologists, were evaluated using semi-coronal STIR and T1-weighted MRI sequences. All images were scored blinded to, age, sex and diagnosis for the occurrence of BME, FL, erosions and ankylosis on the level of SIJ-quadrants (SIJ-Q). Patient groups were built based on decade of age (until 29, 30-39, 40-49 and ≥50 years).Results:A total of 309 patients (175 axSpA and 134 non-SpA) with complete MRI sets were included in the analysis. The mean age was 38.5±11.4 and 43.4±13.8, 66.9% and 35.8% were male, the mean CRP was 1.6±2.4 and 1.1±2.1mg/dl and the median back pain symptom duration was 48 and 60 months, respectively. The number of SIJ-Q with BME and erosions was significantly higher in axSpA vs. non-SpA independent of the age group (Table 1). In comparison, with exception of the patients in the oldest population (≥50 years), the number of SIJ-Q with FL and the number of patients with at least one FL was not different between subgroups, while the number of erosions and FL but not BME was higher in both groups with increasing age. In the univariate analysis, only female sex was significantly associated with higher occurrence of FL.Conclusion:Despite a relatively high prevalence in non-SpA patients, BME and erosions were significantly more frequent in axSpA independent of age, while the presence of FL was not different between groups. FL and erosions are increasingly found in older age groups independent of diagnosis. These data are relevant for the interpretation of MRI findings in the SIJ of patients suspicious of axSpA.Table 1.Comparison of MRI findings between axSpA and non-SpA patients at different age groupsDisclosure of Interests:None declared.
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Deuschl G, Jain R, Wang J, Paschen S, Barbe M, Kühn A, Pötter-Nerger M, Volkmann J, Vesper J. Outcomes of a prospective, multicenter, international registry of Deep Brain Stimulation for Parkinson's Disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.197] [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: 11/28/2022]
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Deuschl G, Jain R, Wang J, Paschen S, Barbe M, Kühn A, Pötter-Nerger M, Volkmann J, Vesper J. Real world clinical outcomes using a novel directional lead from a multicenter registry of deep brain stimulation for Parkinson's Disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.198] [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: 11/24/2022]
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Wendt S, Kühn A, Schneider A, Trawinski H, Lübbert C. Lebererkrankungen bei Reiserückkehrern. Gastroenterologe 2020; 15:211-226. [DOI: 10.1007/s11377-020-00433-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Normann N, Tietz G, Kühn A, Fuchs C, Balau V, Schulz K, Kolata J, Schuerholz T, Petersmann A, Stentzel S, Steil L, Kuhn SO, Meissner K, Völker U, Nauck M, Steinmetz I, Raafat D, Gründling M, Bröker BM. Pathogen-specific antibody profiles in patients with severe systemic infections. Eur Cell Mater 2020; 39:171-182. [PMID: 32301500 DOI: 10.22203/ecm.v039a11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Infections are often caused by pathobionts, endogenous bacteria that belong to the microbiota. Trauma and surgical intervention can allow bacteria to overcome host defences, ultimately leading to sepsis if left untreated. One of the main defence strategies of the immune system is the production of highly specific antibodies. In the present proof-of-concept study, plasma antibodies against 9 major pathogens were measured in sepsis patients, as an example of severe systemic infections. The binding of plasma antibodies to bacterial extracellular proteins was quantified using a semi-automated immunoblot assay. Comparison of the pathogen-specific antibody levels before and after infection showed an increase in plasma IgG in 20 out of 37 tested patients. This host-directed approach extended the results of pathogen-oriented microbiological and PCR diagnostics: a specific antibody response to additional bacteria was frequently observed, indicating unrecognised poly-microbial invasion. This might explain some cases of failed, seemingly targeted antibiotic treatment.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - B M Bröker
- Department of Immunology, University Medicine Greifswald, Greifswald,
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Kroneberg D, Meyer A, Schneider G, Kühn A. P 73 Shorter pulse width reduces gait ataxia associated with VIM-DBS. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.149] [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: 10/18/2022]
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Hohlefeld F, Ewald A, Ehlen F, Tiedt H, Horn A, Kühn A, Curio G, Klostermann F, Nikulin V. EP 66. Cortico-subthalamic neural interactions: Relation to cognitive task performance and evidence for a novel interaction mode across multiple time scales in patients with Parkinson’s disease. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.253] [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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Volkmann J, Reich M, Kirsch AD, Timmermann L, Barbe M, Kühn A, van Riesen C, Whone A, Bigfoot J, Mooney L, Schnitzler A, Jun Groiss S, Moldovan A, Eleopra R, Belgrado E, Rinaldo S, Pavese N, Garmizo J, Carcieri S. EP 37. Impedance changes occur during threshold measurements in subthalamic nucleus (STN) deep brain stimulation patients. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.230] [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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de Macedo Rodrigues K, Kühn A, Tamura T, Dabus G, Kan P, Marosfoi M, Lozano J, Howk M, Perras M, Brooks C, Rex D, Massari F, Gounis M, Wakhloo A, Puri A. E-091 Treatment of Aneurysms of the Pericallosal Artery with the Pipeline Embolization Device. J Neurointerv Surg 2016. [DOI: 10.1136/neurintsurg-2016-012589.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kühn A, Löscher D, Marschalek R. The IRX1/HOXA connection: insights into a novel t(4;11)-specific cancer mechanism. Klin Padiatr 2016. [DOI: 10.1055/s-0036-1582516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Schleihauf J, Meierhofer C, Fratz S, Kühn A, Nagdyman N, Gildein H, Seidel H, Schreiber C, Ewert P, Wolf C. Clinical Long-Term Outcome Is Favorable in Patients with Hypertrophic Obstructive Cardiomyopathy Undergoing Septal Myectomy during Childhood. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Krause P, Brüggemann N, Völzmann S, Horn A, Kupsch A, Schneider GH, Lohmann K, Kühn A. Long-term effect on dystonia after pallidal deep brain stimulation (DBS) in three members of a family with a THAP1 mutation. J Neurol 2015; 262:2739-44. [DOI: 10.1007/s00415-015-7908-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/11/2015] [Accepted: 09/13/2015] [Indexed: 11/29/2022]
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Kühn A, Nieters A, Köttgen A, Goek ON, Michels K, Nöthlings U, Jacobs G, Meisinger C, Pessler F, Akmatov MF, Kühnisch J, Moebus S, Glocker E, Naus S, Keimling M, Leitzmann M, Linseisen J, Sarioglu H, von Toerne C, Hauck SM, Wallaschofski H, Wichmann HE, Illig T. Feasibility and quality development of biomaterials in the pretest studies of the German National Cohort. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2015; 57:1255-63. [PMID: 25293886 DOI: 10.1007/s00103-014-2048-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND The German National Cohort (GNC) is designed to address research questions concerning a wide range of possible causes of major chronic diseases (e.g. cancer, diabetes, infectious, allergic, neurologic and cardiovascular diseases) as well as to identify risk factors and prognostic biomarkers for early diagnosis and prevention of these diseases. The collection of biomaterials in combination with extensive information from questionnaires and medical examinations represents one of the central study components. OBJECTIVES In two pretest studies of the German National Cohort conducted between 2011 and 2013, a range of biomaterials from a defined number of participants was collected. Ten study centres were involved in pretest 1 and 18 study centres were involved in pretest 2. Standard operation procedures (SOP) were developed and evaluated to minimize pre-analytical artefacts during biosample collection. Within the pretest studies different aspects concerning feasibility of sample collection/preparation [pretest 1 (a)] and quality control of biomarkers and proteome analyses were investigated [pretest 1 (b), (c)]. Additionally, recruitment of study participants for specific projects and examination procedures of all study centres in a defined time period according to common standards as well as transportation and decentralized storage of biological samples were tested (pretest 2). These analyses will serve as the basis for the biomaterial collection in the main study of the GNC starting in 2014. MATERIALS AND METHODS Participants, randomly chosen from the population (n = 1000 subjects recruited at ten study sites in pretest 1) were asked to donate blood, urine, saliva and stool samples. Additionally, nasal and oropharyngeal swabs were collected at the study sites and nasal swabs were collected by the participants at home. SOPs for sample collection, preparation, storage and transportation were developed and adopted for pretest 2. In pretest 2, 18 study sites (n = 599 subjects) collected biomaterials mostly identical to pretest 1. Biomarker analyses to test the quality of the biomaterials were performed. RESULTS In pretest 1 and 2, it was feasible to collect all biomaterials from nearly all invited participants without major problems. The mean response rate of the subjects was 95 %. As one important result we found for example that after blood draw the cellular fraction should be separated from the plasma and serum fractions during the first hour with no significant variation for up to 6 h at 4 ℃ for all analysed biomarkers. Moreover, quality control of samples using a proteomics approach showed no significant clustering of proteins according to different storage conditions. All developed SOPs were validated for use in the main study after some adaptation and modification. Additionally, electronic and paper documentation sheets were developed and tested to record time stamps, volumes, freezing times, and aliquot numbers of the collected biomaterials. DISCUSSION The collection of the biomaterials was feasible without major problems at all participating study sites. However, the processing times were in some cases too long. To avoid pre-analytical artefacts in sample collection, appropriate standardisation among the study sites is necessary. To achieve this, blood and urine collection will have to be adapted to specific conditions of usage of liquid handling robots, which will be available at all participating study centres in the main study of the GNC. Strict compliance with the SOPs, thorough training of the staff and accurate documentation are mandatory to obtain high sample quality for later analyses. The so obtained biomaterials represent a valuable resource for research on infectious and other common complex diseases in the GNC.
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Affiliation(s)
- A Kühn
- Helmholtz Zentrum Muenchen-German Research Center for Environmental Health (GmbH), Institute of Epidemiology I, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
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Kühn A, Kowarz E, Marschalek R. Investigating the functional interplay of IRX1 and IRX2 homeoprotein family members and MLL fusion proteins. Klin Padiatr 2015. [DOI: 10.1055/s-0035-1550240] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kühn A, Meierhofer C, Rutz T, Rondak I, Röhlig C, Fratz S, Ewert P, Vogt M. Non-Volumetric Echocardiographic Indices of Right Ventricular Systolic Function in Ebstein’s Anomaly: Comparison with CMR Derived Ejection Fraction in 49 Patients. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555997] [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: 10/23/2022]
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Kühn A, Lange R, Meierhofer C, Schreiber C, Müller J, Hörer J, Ewert P, Vogt M. Clinical and Hemodynamic Effects of the Cone Operation in Patients with Ebstein’s Anomaly. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vogt M, Müller J, Kühn A, Elmenhorst J, Mühlbauer F, Oberhoffer R. Cardiac Adaptation of the Maternal Heart During Pregnancy: A Color-Coded Tissue Doppler Imaging Study - Feasibility, Reproducibility and Course during Pregnancy. Ultraschall Med 2015; 36:e1. [PMID: 24824760 DOI: 10.1055/s-0034-1366520] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- M Vogt
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - J Müller
- Institute of Preventive Pediatrics, Technische Universität München
| | - A Kühn
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - J Elmenhorst
- Institute of Preventive Pediatrics, Technische Universität München
| | - F Mühlbauer
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - R Oberhoffer
- Institute of Preventive Pediatrics, Technische Universität München
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Vogt M, Müller J, Kühn A, Elmenhorst J, Mühlbauer F, Oberhoffer R. Cardiac Adaptation of the Maternal Heart During Pregnancy: A Color-Coded Tissue Doppler Imaging Study--Feasibility, Reproducibility and Course during Pregnancy. Ultraschall Med 2015; 36:270-275. [PMID: 24729437 DOI: 10.1055/s-0034-1366359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE Tissue Doppler imaging (TDI) allows the noninvasive quantification of global and regional myocardial function. Since there are changing loading conditions during pregnancy, this study aimed to determine maternal myocardial adaptation in normal pregnancy with TDI and tracking of the heart cycle. PATIENTS AND METHODS 106 pregnant women, mean age of 33.4 years at baseline, prospectively underwent a total of 161 color-coded tissue Doppler echocardiography samples throughout pregnancy. In further offline analysis of the global and regional myocardial function of the basal segments, maximum tissue velocities at systole (Sm), in the early filling phase of diastole (Em) and during atrial contraction (Am) were assessed. RESULTS From those stored samples, S-wave, E-wave and A-wave velocities could be obtained with a feasibility of 94.8 % and with good inter- and intra-observer variability. S-wave velocity first showed an increase during early pregnancy followed by a decline to baseline characteristics at the 3 rd trimester. The E-wave velocity declined throughout pregnancy. The A-wave velocity increased continuously. These alterations result in a continuous decline of Em/Am ratio as pregnancy advances. CONCLUSION Alterations in tissue velocities during pregnancy reflect maturational changes that mimic "diastolic dysfunction". Based on an understanding of those normal physiological changes, TDI may therefore assist in the monitoring and/or detecting of subclinical myocardial dysfunction during pregnancy.
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Affiliation(s)
- M Vogt
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - J Müller
- Institute of Preventive Pediatrics, Technische Universität München, Germany
| | - A Kühn
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - J Elmenhorst
- Institute of Preventive Pediatrics, Technische Universität München, Germany
| | - F Mühlbauer
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - R Oberhoffer
- Institute of Preventive Pediatrics, Technische Universität München, Germany
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Hauser M, Eicken A, Kühn A, Hess J, Fratz S, Ewert P, Kaemmerer H. Der rechtsventrikuläre Ausflusstrakt bei korrigierter Fallotʼscher Tetralogie: Hämodynamik, Diagnostik und Therapie. Aktuel Kardiol 2014. [DOI: 10.1055/s-0033-1357979] [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: 10/24/2022]
Affiliation(s)
- M. Hauser
- Praxis für Kinderkardiologie, München
| | - A. Eicken
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
| | - A. Kühn
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
| | - J. Hess
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
| | - S. Fratz
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
| | - P. Ewert
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
| | - H. Kaemmerer
- Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, München
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Meierhofer C, Tavakkoli T, Kühn A, Hager A, Müller J, Martinoff S, Ewert P, Stern H, Fratz S. Bewertung hämodynamischer Parametern des rechten und linken Ventrikels und spiroergometrischer Ergebnisse bei Patienten mit Fallot‘scher Tetralogie. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rutz T, Kühn A, Müller J, Meierhofer C, Hager A, Fratz S, Wolf P, Rondak I, Ewert P, Vogt M. Determinants of Exercise Capacity in Patients with Ebstein’s Anomaly: Is it all about the Left Ventricle? Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kusmenkov E, Hörer J, Cleuziou J, Kasnar-Samprec J, Vogt M, Kühn A, Lange R, Schreiber C. Primärkorrektur des Truncus arteriosus communis ohne klappentragendes Conduit vermeidet frühe Reoperationen. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hübl J, Spitzer B, Brücke C, Schönecker T, Kupsch A, Alesch F, Schneider GH, Kühn A. Der Einfluss von Dopamin auf neuronale Aktivitätsmuster während emotionaler Reizverarbeitung im Nucleus subthalamicus bei Parkinsonpatienten. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1384571] [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: 10/24/2022]
Affiliation(s)
- J. Hübl
- Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
| | - B. Spitzer
- Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Berlin
| | - C. Brücke
- Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
| | - T. Schönecker
- Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
| | - A. Kupsch
- Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
| | - F. Alesch
- Klinik für Neurochirurgie, Allgemeines Krankenhaus Wien, Wien
| | - G.-H. Schneider
- Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
| | - A. Kühn
- Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin
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Abstract
Aus ganzen Tieren und aus Köpfen wurden Riboflavin. 2-Amino-6-hydroxypteridin. Isoxanthopterin, Xanthopterin, zwei wahrscheinlich mit Xanthopterin verwandte Stoffe und ein mit Hb2 aus Drosophila identisches Pteridin isoliert. In diesen Stoffen ist jetzt die Natur von Flecken in zweidimensionalen Chromatogrammen aus Augen und Körpern der Ephestia-Wild-form erkannt.
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Affiliation(s)
- M. Viscontini
- Aus dem Chemischen Institut der Universität Zürich und dem Max-Planck-Institut für Biologie Tübingen
| | - A. Kühn
- Aus dem Chemischen Institut der Universität Zürich und dem Max-Planck-Institut für Biologie Tübingen
| | - A. Egelhaaf
- Aus dem Chemischen Institut der Universität Zürich und dem Max-Planck-Institut für Biologie Tübingen
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Exner M, Kühn A, Kahn T, Brandmaier P. Vergleich konventioneller (T1w/T2w) mit diffusionsgewichteten Sequenzen zur Beurteilung der diagnostischen Genauigkeit, des Tumorgradings und der lokalen Ausbreitung des Zervixkarzinoms am 3T-MRT. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kroneberg D, Kühn A, Schneider GH. Einfluss der Tiefen Hirnstimulation auf intrakortikale Inhibition und Plastizität bei einem Patienten mit tardiver Dystonie. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Degen K, Neumann WJ, Hübl J, Brücke C, Schneider GH, Kühn A. Die Power der oszillatorischen 8 – 30 Hz STN-Aktivität korreliert mit dem motorischen Defizit im UPDRS III bei Patienten mit idiopathischem Parkinson-Syndrom. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371196] [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: 10/25/2022]
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Krugel LK, Ehlen F, Tiedt HO, Schönecker T, Kühn A, Klostermann F. Impact of thalamic deep brain Stimulation on lexical processing. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Pradel G, Simon N, Lasonder E, Scheuermayer M, Kühn A, Fischer R, Zipfel P, Skerka C. The impact of complement evasion on transmission of malaria. Mol Immunol 2013. [DOI: 10.1016/j.molimm.2013.05.020] [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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Eicken A, Schubert S, Mazzitelli D, Ewert P, Kühn A, Berger F. Perkutane Trikuspidalklappenimplantation - Initiale Erfahrung aus zwei Zentren. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0033-1354471] [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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Karremann M, Rausche U, Roth D, Kühn A, Pietsch T, Gielen GH, Warmuth-Metz M, Kortmann RD, Straeter R, Gnekow A, Wolff JEA, Kramm CM. Cerebellar location may predict an unfavourable prognosis in paediatric high-grade glioma. Br J Cancer 2013; 109:844-51. [PMID: 23868007 PMCID: PMC3749574 DOI: 10.1038/bjc.2013.404] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 01/11/2023] Open
Abstract
Background: High-grade glioma (HGG) of the cerebellum accounts for only 5% of paediatric HGG. Since little is known about these tumours, the present study aimed at their further characterisation. Methods: Twenty-nine paediatric patients with centrally reviewed cerebellar HGG were identified from the HIT-GBM/HIT-HGG database. Clinical and epidemiological data were compared with those of 180 paediatric patients with cortical HGG. Results: Patients with cerebellar tumours were younger (median age of 7.6 vs 11.7 years, P=0.028), but both groups did not differ significantly with regard to gender, tumour predisposing syndromes, secondary HGG, primary metastasis, tumour grading, extent of tumour resection, chemotherapy regimen, or radiotherapy. Except for an increased incidence of anaplastic pilocytic astrocytoma (APA) in the cerebellar subset (20.7% vs 3.3% P<0.001), histological entities were similarly distributed in both groups. As expected, tumour grading had a prognostic relevance on survival. Compared with cortical HGG, overall survival in the cerebellar location was significantly worse (median overall survival: 0.92±0.02 vs 2.03±0.32 years; P=0.0064), and tumour location in the cerebellum had an independent poor prognostic significance as shown by Cox-regression analysis (P=0.019). Conclusion: High-grade glioma represents a group of tumours with an obviously site-specific heterogeneity associated with a worse survival in cerebellar location.
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Affiliation(s)
- M Karremann
- Department of Paediatric and Adolescent Medicine, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
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Lischka S, Arroyo-Abad U, Mattusch J, Kühn A, Piechotta C. The high diversity of arsenolipids in herring fillet (Clupea harengus). Talanta 2013; 110:144-52. [DOI: 10.1016/j.talanta.2013.02.051] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 02/06/2013] [Accepted: 02/13/2013] [Indexed: 11/15/2022]
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Stumpp P, Kubiessa K, Purz S, Gawlitza M, Kühn A, Fuchs J, Steinhoff KG, Boehm A, Kluge R, Sabri O, Kahn T. Erste klinische Ergebnisse der simultanen 18F-FDG-PET/MRT im Vergleich zur 18F-FDG-PET/CT bei Patienten mit Kopf-Hals-Tumoren. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346268] [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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41
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Seiwerts M, Kühn A, Kahn T. Komplikationen bei CT-gestützten Lungenpunktionen, Prävention und Management. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346655] [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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42
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Restle F, Nickels E, Brücke C, Ebersbach G, Kühn A. Modulation of motor cortical plasticity after BIG-physiotherapy in patients suffering from Parkinson's Disease. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337272] [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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43
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Kroneberg D, Kühn A, Brücke C, Schneider GH. Veränderung der intrakortikalen Inhibition und kortikalen Plastizität bei einer Patientin mit tardiver Dystonie nach Tiefer Hirnstimulation. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337168] [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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44
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Kusmenkov E, Hörer J, Cleuziou J, Kasnar-Samprec J, Vogt M, Kühn A, Lange R, Schreiber C. Feasability of a valveless RV-PA connection in primary repair of common arterial trunk. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332387] [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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45
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Stumpp P, Gosch D, Kühn A, Sorge I, Weber D, Lehmkuhl L, Kahn T, Nagel HD. Performance of an automatic dose control system for CT: patient studies. ROFO-FORTSCHR RONTG 2012; 185:144-52. [PMID: 23108902 DOI: 10.1055/s-0032-1325441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE To study the effect of an automatic dose control (ADC) system with adequate noise characteristic on the individual perception of image noise and diagnostic acceptance compared to objectively measured image noise and the dose reductions achieved in a representative group of patients. MATERIALS AND METHODS In a retrospective study two matched cohorts of 20 patients each were identified: a manual cohort with exposure settings according to body size (small - regular - large) and an ADC cohort with exposure settings calculated by the ADC system (DoseRight 2.0™, Philips Healthcare). For each patient, 12 images from 6 defined anatomic levels from contrast-enhanced scans of chest and abdomen/pelvis were analyzed by 4 independent readers concerning image noise and diagnostic acceptance on a five-point Likert scale and evaluated for objectively measured image noise. Radiation exposure was calculated from recorded exposure data. RESULTS Use of the ADC system reduced the average effective dose for patients by 36 % in chest scans (3.2 vs. 4.9 mSv) and by 17 % in abdomen/pelvis scans (7.6 vs. 8.3 mSv). Average objective noise was slightly lower in the manual cohort (11.1 vs. 12.8 HU), correlating with a slightly better rating in subjective noise score (4.4 vs. 4.2). However, diagnostic acceptance was rated almost equal in both cohorts with excellent image quality (4.6 vs. 4.5). CONCLUSION Use of an ADC system with adequate noise characteristic leads to significant reductions in radiation exposure for patients while maintaining excellent image quality.
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Affiliation(s)
- P Stumpp
- Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig
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Abstract
Tularaemia, caused by Francisella tularensis, had not been registered in Kosovo before an outbreak in 1999 and 2000. A national surveillance system has been implemented in Kosovo since 2000 to monitor a number of diseases, including tularaemia. Antibody detection in human sera was used for laboratory diagnosis of tularaemia and F. tularensis lipopolysaccharide antigen was used as a marker of infection. The purpose of this study is to describe the incidence of tularaemia in Kosovo after the 1999-00 outbreak. In 2001 and 2002, a second outbreak occurred, with 327 serologically confirmed cases. From 2001 to 2010, 25-327 cases were registered per year, giving a mean annual incidence of 5.2 per 100,000 population. The most likely sources of infection were contaminated drinking water and food. The dominant clinical manifestations were the glandular (79%) and ulcero-glandular (21%) forms. By 2010, the disease had spread throughout Kosovo. Presumably as a result of war and subsequent environmental disruption, mass population displacement and breakdown of sanitation and hygiene, the two major outbreaks of tularaemia resulted in the establishment of an active endemic area of tularaemia in Kosovo.
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Affiliation(s)
- R Grunow
- Robert Koch Institute, Centre for Biological Security (ZBS 2), Berlin, Germany.
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Kasnar-Samprec J, Kühn A, Hörer J, Vogt M, Cleuziou J, Lange R, Schreiber C. Unloading of the right ventricle by PCPC does not improve tricuspid insufficiency in HLHS patients. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297680] [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: 10/14/2022]
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Aguilar Pérez M, Kühn A, Miloslavski E, Henkes H. Cavernous redirection of venous drainage after partial transvenous coil occlusion of a sigmoid sinus dAVF: coil mass retrieval with flexible cysto-urethroscopy grasping forceps. a technical note. Interv Neuroradiol 2011; 17:203-7. [PMID: 21696659 DOI: 10.1177/159101991101700210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Accepted: 11/28/2010] [Indexed: 11/17/2022] Open
Abstract
We describe the case of a patient who presented with ocular symptoms (chemosis, proptosis, increased intra-ocular pressure, impaired visual acuity) eight months after the transvenous coil occlusion of an ipsilateral sigmoid sinus dural arteriovenous fistula (dAVF). Digital substraction angiography revealed a partial occlusion of the left sigmoid sinus with coils. Since the connection from the sigmoid sinus to the internal jugular vein was obliterated by coils without interrupting the arteriovenous shunt, the venous drainage was redirected into the inferior petrosal sinus, the cavernous sinus and the superior ophthalmic vein. The transjugular access to the inferior petrosal sinus was obstructed by a large coil mass in the jugular bulb. Several attempts to remove these coils with an Alligator retrieval device and a goose neck snare failed. The coil mass was withdrawn via a direct access to the internal jugular vein using flexible cysto-urethroscopy grasping forceps, an urological device designed for the removal of kidney stones. After establishing anterograde drainage, the now accessible inferior petrosal sinus was occluded with fibered coils and the dAVF was completely obliterated. The ocular symptoms resolved within ten days.
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Affiliation(s)
- M Aguilar Pérez
- Department of Neuroradiology, University of Duisburg-Essen, Stuttgart, Germany
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Sigler M, Kühn A, Hörer J, Schreiber C, Schneider H, Foth R, Eicken A, Hess J, Vogt M. Device failure after transcatheter closure of atrial septal defects. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269003] [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: 10/18/2022]
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Merkl A, Schneider GH, Kühn A, Bührsch NC, Anghelescu I, Heuser I, Bajbouj M. Deep brain stimulation of the anterior subgenual cingulate (Cg 25) in treatment-resistant depression. Pharmacopsychiatry 2009. [DOI: 10.1055/s-0029-1240173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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