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Rothoeft T, Maier C, Talarico A, Hoffmann A, Schlegtendal A, Lange B, Petersmann A, Denz R, Timmesfeld N, Toepfner N, Vidal-Blanco E, Pfaender S, Lücke T, Brinkmann F. Natural and hybrid immunity after SARS-CoV-2 infection in children and adolescents. Infection 2024:10.1007/s15010-024-02225-w. [PMID: 38499828 DOI: 10.1007/s15010-024-02225-w] [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: 10/07/2023] [Accepted: 02/24/2024] [Indexed: 03/20/2024]
Abstract
PURPOSE In contrast to adults, immune protection against SARS-CoV-2 in children and adolescents with natural or hybrid immunity is still poorly understood. The aim of this study was to analyze different immune compartments in different age groups and whether humoral immune reactions correlate with a cellular immune response. METHODS 72 children and adolescents with a preceding SARS-CoV-2 infection were recruited. 37 were vaccinated with an RNA vaccine (BNT162b2). Humoral immunity was analyzed 3-26 months (median 10 months) after infection by measuring Spike protein (S), nucleocapsid (NCP), and neutralizing antibodies (nAB). Cellular immunity was analyzed using a SARS-CoV-2-specific interferon-γ release assay (IGRA). RESULTS All children and adolescents had S antibodies; titers were higher in those with hybrid immunity (14,900 BAU/ml vs. 2118 BAU/ml). NCP antibodies were detectable in > 90%. Neutralizing antibodies (nAB) were more frequently detected (90%) with higher titers (1914 RLU) in adolescents with hybrid immunity than in children with natural immunity (62.5%, 476 RLU). Children with natural immunity were less likely to have reactive IGRAs (43.8%) than adolescents with hybrid immunity (85%). The amount of interferon-γ released by T cells was comparable in natural and hybrid immunity. CONCLUSION Spike antibodies are the most reliable markers to monitor an immune reaction against SARS-CoV-2. High antibody titers of spike antibodies and nAB correlated with cellular immunity, a phenomenon found only in adolescents with hybrid immunity. Hybrid immunity is associated with markedly higher antibody titers and a higher probability of a cellular immune response than a natural immunity.
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Affiliation(s)
- T Rothoeft
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany.
| | - C Maier
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
| | - A Talarico
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
| | - A Hoffmann
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
| | - A Schlegtendal
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
| | - B Lange
- Department of Epidemiology, Helmholtz Centre for Infection Research, Brunswick, Germany
| | - A Petersmann
- University Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Oldenburg, Oldenburg, Germany
- University Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - R Denz
- Department of Medical Informatics, Biometry and Epidemiology, Ruhr-University Bochum, Bochum, Germany
| | - N Timmesfeld
- Department of Medical Informatics, Biometry and Epidemiology, Ruhr-University Bochum, Bochum, Germany
| | - N Toepfner
- Department of Pediatrics, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - E Vidal-Blanco
- Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany
| | - S Pfaender
- Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany
| | - T Lücke
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
| | - F Brinkmann
- University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University, Bochum, Germany
- University Children's Hospital, Lübeck, Germany
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
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Lukasik H, Grote H, Bogaert S, Volkenstein S, Schlegtendal A, Eitner L, Beermann L, Maier C, Brinkmann F, van Ackeren K. Olfactory disorders in childhood: A comparative study of olfaction in children with adenoid hyperplasia versus a control group and the postoperative effects of adenoidectomy with respect to olfactory ability. Int J Pediatr Otorhinolaryngol 2023; 174:111735. [PMID: 37801831 DOI: 10.1016/j.ijporl.2023.111735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/27/2023] [Accepted: 09/16/2023] [Indexed: 10/08/2023]
Abstract
PURPOSE Hyposmia in childhood is poorly characterized. The "U-Sniff Test", validated for children with anosmia, can be used to objectify olfactory impairment but has not been used to distinguish between hyposmia and normosmia. Therefore, we investigated children with enlarged adenoids with respect to hyposmia, its correlation with adenoid size, and the sensitivity of questionnaires to predict olfactory impairment. METHODS In a prospective comparison, olfaction was assessed by "U-Sniff Test" (score 0-12; <8 hyposmia) in 41 children (5-18 years) with adenoid hyperplasia and compared with 196 children without any respiratory affection (control) after exclusion of previous SARS-Cov2-infection from December 2020 to December 2021. ENT-related complaints were collected using a self-designed questionnaire. We were able to include 13 children in a follow-up examination to compare preoperative performance in the "U-Sniff Test" with postoperative outcome after adenoidectomy. STATISTICS chi-square-test (p < 0.05), odds-ratio, Spearman's rho, ROC-, cluster analysis. RESULTS Severe hyposmia was present in 36.6% of children with adenoid-hyperplasia compared to 3.1% of the control-group. Adenoid-children scored significantly more often between 8 and 10 points (58.5%) than the control (31.6%; p < 0.01). Adenoid size and olfactory performance correlate significantly (r: 0.83; CI -0.89 … -0.72). Hyposmia in the adenoid group is characterized predominately by loss of the odors banana, butter and rose. None of children with hyposmia or parents reported impaired olfactory performance. Postoperatively, olfactory function improved significantly in 85% of cases (p 0.01, SD ± 1.71, Δ3.54points). CONCLUSION Questionnaires are insufficient to detect hyposmia in this cohort. In contrast, the "U-Sniff Test" detects even reduced olfactory performance without reaching the cut-off value, which represents the majority of test results in the adenoid group. Therefore, we recommend the classification of moderate hyposmia (8-10 points) to be included for our study population.
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Affiliation(s)
- H Lukasik
- Department of Otorhinolaryngology, Head and Neck Surgery, Johannes Wesling Klinikum, Ruhr-University Bochum, Minden, Germany; Department of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth-Hospital, Ruhr-University Bochum, Bochum, Germany.
| | - H Grote
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - S Bogaert
- Department of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - S Volkenstein
- Department of Otorhinolaryngology, Head and Neck Surgery, Johannes Wesling Klinikum, Ruhr-University Bochum, Minden, Germany
| | - A Schlegtendal
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - L Eitner
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - L Beermann
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - C Maier
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - F Brinkmann
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany; Division of Pediatric Pulmonology and Allergology, University Children's Hospital, German Center for Lung Research (ARCN, DZL), Luebeck, Germany
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3
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Basu P, Maier C, Averitt DL, Basu A. NLR family pyrin domain containing 3 (NLRP3) inflammasomes and peripheral neuropathic pain - Emphasis on microRNAs (miRNAs) as important regulators. Eur J Pharmacol 2023; 955:175901. [PMID: 37451423 DOI: 10.1016/j.ejphar.2023.175901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Neuropathic pain is caused by the lesion or disease of the somatosensory system and can be initiated and/or maintained by both central and peripheral mechanisms. Nerve injury leads to neuronal damage and apoptosis associated with the release of an array of pathogen- or damage-associated molecular patterns to activate inflammasomes. The activation of the NLR family pyrin domain containing 3 (NLRP3) inflammasome contributes to neuropathic pain and may represent a novel target for pain therapeutic development. In the current review, we provide an up-to-date summary of the recent findings on the involvement of NLRP3 inflammasome in modulating neuropathic pain development and maintenance, focusing on peripheral neuropathic conditions. Here we provide a detailed review of the mechanisms whereby NLRP3 inflammasomes contribute to neuropathic pain via (1) neuroinflammation, (2) apoptosis, (3) pyroptosis, (4) proinflammatory cytokine release, (5) mitochondrial dysfunction, and (6) oxidative stress. We then present the current research literature reporting on the antinociceptive effects of several natural products and pharmacological interventions that target activation, expression, and/or regulation of NLRP3 inflammasome. Furthermore, we emphasize the effects of microRNAs as another regulator of NLRP3 inflammasome. In conclusion, we summarize the possible caveats and future perspectives that might provide successful therapeutic approaches against NLRP3 inflammasome for treating or preventing neuropathic pain conditions.
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Affiliation(s)
- Paramita Basu
- Pittsburgh Center for Pain Research, The Pittsburgh Project to End Opioid Misuse, Department of Anesthesiology & Perioperative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA.
| | - Camelia Maier
- Division of Biology, School of the Sciences, Texas Woman's University, Denton, TX, 76204-5799, USA.
| | - Dayna L Averitt
- Division of Biology, School of the Sciences, Texas Woman's University, Denton, TX, 76204-5799, USA.
| | - Arpita Basu
- Department of Kinesiology and Nutrition Sciences, School of Integrated Health Sciences, University of Nevada, Las Vegas, NV, 89154, USA.
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Affiliation(s)
- C Maier
- Department of RadiologyCharité, Universitätsmedizin BerlinBerlin, Germany
- Department of RadiologyNew York University School of MedicineNew York, New York
| | - J O Voss
- Department of Oral and Maxillofacial SurgeryCharité, Universitätsmedizin BerlinBerlin, Germany
- Berlin Institute of HealthBerlin, Germany
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Maier C, Thieme N, Beck-Broichsitter B, Beetz NL, Walter-Rittel TC, Rubarth K, Heiland M, Kreutzer K, Koerdt S, Voss JO. Imaging the Tight Orbit: Radiologic Manifestations of Orbital Compartment Syndrome. AJNR Am J Neuroradiol 2023; 44:589-594. [PMID: 36997289 PMCID: PMC10171392 DOI: 10.3174/ajnr.a7840] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 03/04/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND AND PURPOSE Orbital compartment syndrome is a sight-threatening emergency caused by rising pressure inside the orbit. It is usually diagnosed clinically, but imaging might help when clinical findings are inconclusive. This study aimed to systematically evaluate imaging features of orbital compartment syndrome. MATERIALS AND METHODS This retrospective study included patients from 2 trauma centers. Proptosis, optic nerve length, posterior globe angle, morphology of the extraocular muscles, fracture patterns, active bleeding, and superior ophthalmic vein caliber were assessed on pretreatment CT. Etiology, clinical findings, and visual outcome were obtained from patient records. RESULTS Twenty-nine cases of orbital compartment syndrome were included; most were secondary to traumatic hematoma. Pathologies occurred in the extraconal space in all patients, whereas intraconal abnormalities occurred in 59% (17/29), and subperiosteal hematoma in 34% (10/29). We observed proptosis (affected orbit: mean, 24.4 [SD, 3.1] mm versus contralateral: 17.7 [SD, 3.1] mm; P < .01) as well as stretching of the optic nerve (mean, 32.0 [SD, 2.5] mm versus 25.8 [SD, 3.4] mm; P < .01). The posterior globe angle was decreased (mean, 128.7° [SD, 18.9°] versus 146.9° [SD, 6.4°]; P < .01). In 69% (20/29), the superior ophthalmic was vein smaller in the affected orbit. No significant differences were detected regarding the size and shape of extraocular muscles. CONCLUSIONS Orbital compartment syndrome is characterized by proptosis and optic nerve stretching. In some cases, the posterior globe is deformed. Orbital compartment syndrome can be caused by an expanding pathology anywhere within the orbit with or without direct contact to the optic nerve, confirming the pathophysiologic concept of a compartment mechanism.
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Affiliation(s)
- C Maier
- From the Departments of Radiology (C.M., N.T., N.L.B., T.C.W.-R.)
- Department of Radiology (C.M.), Center for Advanced Imaging Innovation and Research, New York University School of Medicine, New York, New York
| | - N Thieme
- From the Departments of Radiology (C.M., N.T., N.L.B., T.C.W.-R.)
| | - B Beck-Broichsitter
- Oral and Maxillofacial Surgery (B.B.-B., M.H., K.K., S.K., J.O.V.)
- Department of Oral and Maxillofacial Surgery (B.B.-B.), Katharinenhospital Stuttgart, Stuttgart, Germany
| | - N L Beetz
- From the Departments of Radiology (C.M., N.T., N.L.B., T.C.W.-R.)
| | | | - K Rubarth
- Institute of Biometry and Clinical Epidemiology (K.R.), Charite-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Berlin Institute of Health (K.R., J.O.V.), Berlin, Germany
| | - M Heiland
- Oral and Maxillofacial Surgery (B.B.-B., M.H., K.K., S.K., J.O.V.)
| | - K Kreutzer
- Oral and Maxillofacial Surgery (B.B.-B., M.H., K.K., S.K., J.O.V.)
| | - S Koerdt
- Oral and Maxillofacial Surgery (B.B.-B., M.H., K.K., S.K., J.O.V.)
| | - J O Voss
- Oral and Maxillofacial Surgery (B.B.-B., M.H., K.K., S.K., J.O.V.)
- Berlin Institute of Health (K.R., J.O.V.), Berlin, Germany
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Hoffmann AT, Dillenhöfer S, Lücke T, Maier C, Brinkmann F. [The challenges of managing thoracic pain in cystic fibrosis (CF)]. Schmerz 2022; 36:422-428. [PMID: 34762202 PMCID: PMC9674729 DOI: 10.1007/s00482-021-00603-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Cystic fibrosis (CF) is a rare genetic multisystemic disorder with progressive abdominal and pulmonary involvement. Pain is still an underestimated symptom in CF patients. METHODS A comprehensive review of guidelines and scientific literature on the topic was performed and combined with findings from pain management in a young CF patient with progressive thoracic pain. RESULTS German CF guidelines do not cover diagnosis and management of pain in these patients. Studies from Europe and the United States report interactions between intensity of pain and mortality in CF, but do not include data on the efficacy of pain management. These data and clinical observations of a CF patient with episodes of intense thoracic pain are used to illustrate the specific challenges in pain relief. CONCLUSION Pain management in CF requires meticulous monitoring as well as an interdisciplinary approach and should be implemented in the German CF guidelines. The authors also want to suggest recommendations for the treatment of thoracic pain in CF. The range and severity of organ involvement complicates the use both of opioids and non-opioids. Especially opioid treatment carries the risk of hypoxia and opioid-induced constipation (OIC) and needs close medical supervision.
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Affiliation(s)
- A T Hoffmann
- Universitätsklinik für Kinder- und Jugendmedizin, Ruhr-Universität Bochum, Alexandrinenstraße 5, 44791, Bochum, Deutschland
| | - S Dillenhöfer
- Universitätsklinik für Kinder- und Jugendmedizin, Ruhr-Universität Bochum, Alexandrinenstraße 5, 44791, Bochum, Deutschland
| | - T Lücke
- Universitätsklinik für Kinder- und Jugendmedizin, Ruhr-Universität Bochum, Alexandrinenstraße 5, 44791, Bochum, Deutschland
| | - C Maier
- Universitätsklinik für Kinder- und Jugendmedizin, Ruhr-Universität Bochum, Alexandrinenstraße 5, 44791, Bochum, Deutschland
| | - F Brinkmann
- Universitätsklinik für Kinder- und Jugendmedizin, Ruhr-Universität Bochum, Alexandrinenstraße 5, 44791, Bochum, Deutschland.
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Kleine J, Köppen J, Maier C. Transformation-oriented leadership in German hospitals: beneficial attributes and competencies. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac131.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Due to a shortage of health professionals and economic pressure, many German hospitals are required to transform the clinical work environment to increase job satisfaction, but also to attract and retain health professionals. Leadership is a key factor for the successful implementation of organization-wide change. The aim of this study was to identify the attributes and competencies among leaders that are beneficial for implementing and managing hospital-wide transformations.
Methods
A qualitative study design. In 2020, 18 face-to-face, semi-structured interviews were conducted with chief nursing officers, ward managers, nurses and physicians in five German hospitals which have started implementing a hospital-wide transformation (e.g. Magnet® or Pathway®). Interviews were recorded and transcribed verbatim. Data were analyzed in Atlas.ti using the content analysis method according to Mayring.
Results
Results show five beneficial leadership elements to instigate and steer hospital-wide transformation: (1) Charismatic leaders are role models and idealists with well-communicated visions that are grounded in clinical practice and reflect the clinical practitioners. (2) Mentally strong leaders have courage, stamina, and are resilient. (3) Empowering leaders are highly supportive and increase the intrinsic motivation of employees. (4) Imparting interprofessional appreciation refers to leaders who cultivate a respectful relationship with persons from other professional groups and recognize their daily performance. (5) Agile leaders are well and quickly accessible for employees and respond situationally to changing demands in everyday work.
Conclusions
Interviewees described characteristics of hospital leaders as success factors for establishing and maintaining continuous change processes. Charismatic and supportive leaders are critical to transform the hospitals’ culture and values. In addition, equitable interprofessional collaboration is of utmost importance.
Key messages
• Charismatic, agile, empowering leaders can have a positive impact on system-wide change processes.
• The successful transformation of hospitals’ work environment needs interprofessional appreciation and the mutual acknowledgement of competences.
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Affiliation(s)
- J Kleine
- Department of Health Care Management, Technische Universität Berlin , Berlin, Germany
| | - J Köppen
- Department of Health Care Management, Technische Universität Berlin , Berlin, Germany
| | - C Maier
- Department of Health Care Management, Technische Universität Berlin , Berlin, Germany
- European Observatory on Health Systems and Policies , Brussels, Belgium
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Maier C, Winkelmann J, Wismar M. Overview of innovative skill-mix changes in nursing across Europe. Eur J Public Health 2022. [PMCID: PMC9593714 DOI: 10.1093/eurpub/ckac129.447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Many countries in Europe and worldwide have implemented new professional for nurses or are in the process of implementation, yet, an overview of the evidence on skill-mix changes has been missing. This study has analysed skill-mix innovations in nursing, evidence on outcomes and lessons for implementation. Methods An overview of systematic reviews, following a protocol plus country case studies, as part of an international study. The literature search was performed in six databases, with search terms covering skill-mix whereby the nursing profession played a key role. Screening was performed by three researchers after high interrater reliability rates were achieved. Analyses were performed for the nursing professions, a typology of skill-mix changes (task-shifting and role expansion) and evidence on outcomes. Results A total of 42 systematic reviews were identified on nurses working in new roles. The roles varied considerably, ranging from nurse prescribing to advanced practice nursing and nurse-led clinics. Nurse-led chronic care programmes were frequently identified, with overall positive outcomes on several health outcomes, e.g., for patients with diabetes or cardiovascular diseases. Nurses were also working in advanced roles in health promotion and prevention, e.g., performing screening programmes, showing equivalent quality of care compared with doctors if adequately trained. Several skill-mix models to enhance care coordination and integration were identified, suggesting that when tailored to the needs of specific population groups, particularly for vulnerable groups, may improve health outcomes or access to services. Conclusions The roles of nurses are increasingly diversifying and expanding internationally. Sharing country experiences on how to effectively educate the workforce to be prepared for these new roles and ensure smooth integration is critical.
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Affiliation(s)
- C Maier
- Department of Healthcare Management, Technische Universität Berlin , Berlin, Germany
- European Observatory on Health Systems and Policies , Brussels, Belgium
| | - J Winkelmann
- Department of Healthcare Management, Technische Universität Berlin , Berlin, Germany
- European Observatory on Health Systems and Policies , Brussels, Belgium
| | - M Wismar
- European Observatory on Health Systems and Policies , Brussels, Belgium
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Joshi MK, Kranzl F, Schuckert A, Lovas I, Maier C, Blatt R, Knap M, Roos CF. Observing emergent hydrodynamics in a long-range quantum magnet. Science 2022; 376:720-724. [PMID: 35549407 DOI: 10.1126/science.abk2400] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Identifying universal properties of nonequilibrium quantum states is a major challenge in modern physics. A fascinating prediction is that classical hydrodynamics emerges universally in the evolution of any interacting quantum system. We experimentally probed the quantum dynamics of 51 individually controlled ions, realizing a long-range interacting spin chain. By measuring space-time-resolved correlation functions in an infinite temperature state, we observed a whole family of hydrodynamic universality classes, ranging from normal diffusion to anomalous superdiffusion, that are described by Lévy flights. We extracted the transport coefficients of the hydrodynamic theory, reflecting the microscopic properties of the system. Our observations demonstrate the potential for engineered quantum systems to provide key insights into universal properties of nonequilibrium states of quantum matter.
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Affiliation(s)
- M K Joshi
- Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Technikerstraße 21a, 6020 Innsbruck, Austria
| | - F Kranzl
- Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Technikerstraße 21a, 6020 Innsbruck, Austria.,Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - A Schuckert
- Department of Physics and Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany.,Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - I Lovas
- Department of Physics and Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany.,Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - C Maier
- Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Technikerstraße 21a, 6020 Innsbruck, Austria.,AQT, Technikerstraße 17, 6020 Innsbruck, Austria
| | - R Blatt
- Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Technikerstraße 21a, 6020 Innsbruck, Austria.,Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - M Knap
- Department of Physics and Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany.,Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - C F Roos
- Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Technikerstraße 21a, 6020 Innsbruck, Austria.,Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
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Maier C, Basu P, Thallapareddy C. In vitro antidiabetic and antioxidant properties of dioecious Morus alba (Moraceae) extracts. Pharmacognosy Res 2021. [DOI: 10.4103/pr.pr_103_20] [Citation(s) in RCA: 1] [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: 11/04/2022] Open
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Do ATL, Enax-Krumova EK, Özgül Ö, Eitner LB, Heba S, Tegenthoff M, Maier C, Höffken O. Distraction by a cognitive task has a higher impact on electrophysiological measures compared with conditioned pain modulation. BMC Neurosci 2020; 21:53. [PMID: 33287715 PMCID: PMC7720448 DOI: 10.1186/s12868-020-00604-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 11/23/2020] [Indexed: 12/23/2022] Open
Abstract
Background Conditioned pain modulation (CPM) evaluates the effect of a painful conditioning stimulus (CS) on a painful test stimulus (TS). Using painful cutaneous electrical stimulation (PCES) as TS and painful cold water as CS, the pain relief was paralleled by a decrease in evoked potentials (PCES-EPs). We now aimed to compare the effect of CPM with cognitive distraction on PCES-induced pain and PCES-EP amplitudes. Methods PCES was performed using surface electrodes inducing a painful sensation of 60 (NRS 0–100) on one hand. In a crossover design healthy subjects (included: n = 38, analyzed: n = 23) immersed the contralateral hand into 10 °C cold water (CS) for CPM evaluation and performed the 1-back task for cognitive distraction. Before and during the CS and 1-back task, respectively, subjects rated the pain intensity of PCES and simultaneously cortical evoked potentials were recorded. Results Both CPM and cognitive distraction significantly reduced PCES-EP amplitudes (CPM: 27.6 ± 12.0 μV to 20.2 ± 9.5 μV, cognitive distraction: 30.3 ± 14.2 µV to 13.6 ± 5.2 μV, p < 0.001) and PCES-induced pain (on a 0–100 numerical rating scale: CPM: 58 ± 4 to 41.1 ± 12.3, cognitive distraction: 58.3 ± 4.4 to 38.0 ± 13.0, p < 0.001), though the changes in pain intensity and PCES-amplitude did not correlate. The changes of the PCES-EP amplitudes during cognitive distraction were more pronounced than during CPM (p = 0.001). Conclusions CPM and cognitive distraction reduced the PCES-induced pain to a similar extent. The more pronounced decrease of PCES-EP amplitudes after distraction by a cognitive task implies that both conditions might not represent the general pain modulatory capacity of individuals, but may underlie different neuronal mechanisms with the final common pathway of perceived pain reduction.
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Affiliation(s)
- A T L Do
- Department of Neurology, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - E K Enax-Krumova
- Department of Neurology, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.
| | - Ö Özgül
- Department of Neurology, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - L B Eitner
- Department of Pain Medicine, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.,Department of Neuropaediatrics, University Children's Hospital, Ruhr-University Bochum, Alexandrinenstraße 5, 44791, Bochum, Germany
| | - S Heba
- Department of Neurology, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | | | - C Maier
- Department of Pain Medicine, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - O Höffken
- Department of Neurology, Ruhr-University Bochum, BG University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
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12
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Kokail C, Maier C, van Bijnen R, Brydges T, Joshi MK, Jurcevic P, Muschik CA, Silvi P, Blatt R, Roos CF, Zoller P. Author Correction: Self-verifying variational quantum simulation of lattice models. Nature 2020; 580:E9. [DOI: 10.1038/s41586-020-2203-2] [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: 11/09/2022]
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13
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Basu P, Meza E, Bergel M, Maier C. Estrogenic, Antiestrogenic and Antiproliferative Activities of Euphorbia bicolor ( Euphorbiaceae) Latex Extracts and Its Phytochemicals. Nutrients 2019; 12:nu12010059. [PMID: 31881661 PMCID: PMC7019628 DOI: 10.3390/nu12010059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/18/2019] [Accepted: 12/23/2019] [Indexed: 12/13/2022] Open
Abstract
Estrogen receptor antagonists are effective in breast cancer treatment. However, the side effects of these treatments have led to a rise in searching for alternative therapies. The present study evaluated the estrogenic, antiestrogenic, and antiproliferative activities of Euphorbiabicolor (Euphorbiaceae), a plant native to south-central USA. Estrogenic and antiestrogenic activities of latex extract and its phytochemicals were evaluated with a steroid-regulated yeast system expressing the human estrogen receptor α and antiproliferative properties were assessed in the ER-positive MCF-7 and T47-D and triple-negative MDA-MB-231 and MDA-MB-469 breast carcinomas. Genistein and coumestrol identified in the latex extract induced higher estrogenic and antiestrogenic activities compared to diterpenes and flavonoids. The latex extract, resiniferatoxin (RTX) and rutin induced antiproliferative activities in all cell lines in a dose-dependent manner, but not in human normal primary dermal fibroblast cultures. A biphasic effect was observed with MDA-MB-468 breast carcinoma in which the latex extract at low concentrations increased and at high concentrations decreased cell proliferation. Treatments with latex extract in combination with RTX or rutin reduced even more the proliferation of MCF-7 breast carcinoma compared to the individual latex, RTX, and rutin treatments. E. bicolor latex phytochemicals could contribute to developing commercial therapeutic agents for breast cancer treatment.
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Affiliation(s)
| | | | - Michael Bergel
- Correspondence: (M.B.); (C.M.); Tel.: +1-940-898-2471 (M.B.); +1-940-898-2358 (C.M.)
| | - Camelia Maier
- Correspondence: (M.B.); (C.M.); Tel.: +1-940-898-2471 (M.B.); +1-940-898-2358 (C.M.)
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14
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Panteli D, Kreutzberg A, Reichebner C, Maier C, Destrebecq F. Regulation of health care professionals as a quality strategy. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz185.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Health professionals are both a health system input and an active component of the functions that the health system performs. As such, the performance of the health workforce is directly linked to the quality of health services. Regulation is essential to define a clear framework within which health professionals acquire and maintain the competence needed to provide health services that are of high quality, i.e. that are safe, effective and patient-centered. This presentation discusses the evidence on a sequence of strategies that regulate health professionals, looking at how they are currently deployed in Europe, how (cost-)effective they are, and what can be done to optimize their implementation.
Adopting a comprehensive perspective ranging from the entry into training to life-long maintenance and demonstration of competence, the presentation brings together a) strategies to develop professional competence (including training structure and contents, curriculum development and the accreditation of institutions for health education); b) strategies that regulate the entry of physicians and nurses into their professions (e.g. licensing and registration); c) mechanisms to maintain competence (e.g. continuing professional development); and d) levers to address instances when fitness to practice comes into question.
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Affiliation(s)
- D Panteli
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
| | - A Kreutzberg
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
| | - C Reichebner
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
| | - C Maier
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
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15
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Basu P, Hornung RS, Averitt DL, Maier C. Euphorbia bicolor ( Euphorbiaceae) Latex Extract Reduces Inflammatory Cytokines and Oxidative Stress in a Rat Model of Orofacial Pain. Oxid Med Cell Longev 2019; 2019:8594375. [PMID: 31612077 PMCID: PMC6757321 DOI: 10.1155/2019/8594375] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/10/2019] [Indexed: 12/26/2022]
Abstract
Recent studies have reported that the transient receptor potential V1 ion channel (TRPV1), a pain generator on sensory neurons, is activated and potentiated by NADPH oxidase-generated reactive oxygen species (ROS). ROS are increased by advanced oxidation protein products (AOPPs), which activate NADPH oxidase by upregulating Nox4 expression. Our previous studies reported that Euphorbia bicolor (Euphorbiaceae) latex extract induced peripheral analgesia, partly via TRPV1, in hindpaw-inflamed male and female rats. The present study reports that E. bicolor latex extract also can evoke analgesia via reduction of oxidative stress biomarkers and proinflammatory cytokines/chemokines in a rat model of orofacial pain. Male and female rats were injected with complete Freund's adjuvant (CFA) into the left vibrissal pad to induce orofacial inflammation, and mechanical allodynia was measured by the von Frey method. Twenty-four hours later, rats received one injection of E. bicolor latex extract or vehicle into the inflamed vibrissal pad. Mechanical sensitivity was reassessed at 1, 6, 24, and/or 72 hours. Trigeminal ganglia and trunk blood were collected at each time point. In the trigeminal ganglia, ROS were quantified using 2',7'-dichlorodihydrofluorescein diacetate dye, Nox4 protein was quantified by Western blots, and cytokines/chemokines were quantified using a cytokine array. AOPPs were quantified in trunk blood using a spectrophotometric assay. E. bicolor latex extract significantly reduced orofacial mechanical allodynia in male and female rats at 24 and 72 hours, respectively. ROS, Nox4, and proinflammatory cytokines/chemokines were significantly reduced in the trigeminal ganglia, and plasma AOPP was significantly reduced in the trunk blood of extract-treated compared to vehicle-treated rats. In vitro assays indicate that E. bicolor latex extract possessed antioxidant activities by scavenging free radicals. Together our data indicate that the phytochemicals in E. bicolor latex may serve as novel therapeutics for treating oxidative stress-induced pain conditions.
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Affiliation(s)
- Paramita Basu
- Department of Biology, Texas Woman's University, Denton, 76204 TX, USA
| | | | - Dayna L. Averitt
- Department of Biology, Texas Woman's University, Denton, 76204 TX, USA
| | - Camelia Maier
- Department of Biology, Texas Woman's University, Denton, 76204 TX, USA
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16
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Basu P, Tongkhuya SA, Harris TL, Riley AR, Maier C, Granger J, Wojtaszek J, Averitt DL. Euphorbia bicolor ( Euphorbiaceae) Latex Phytochemicals Induce Long-Lasting Non-Opioid Peripheral Analgesia in a Rat Model of Inflammatory Pain. Front Pharmacol 2019; 10:958. [PMID: 31551772 PMCID: PMC6735194 DOI: 10.3389/fphar.2019.00958] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 07/29/2019] [Indexed: 12/31/2022] Open
Abstract
The negative side effects of opioid-based narcotics underscore the search for alternative non-opioid bioactive compounds that act on the peripheral nervous system to avoid central nervous system-mediated side effects. The transient receptor potential V1 ion channel (TRPV1) is a peripheral pain generator activated and sensitized by heat, capsaicin, and a variety of endogenous ligands. TRPV1 contributes to peripheral sensitization and hyperalgesia, in part, via triggering the release of proinflammatory peptides, such as calcitonin gene-related peptide (CGRP), both locally and at the dorsal horn of the spinal cord. Ultrapotent exogenous TRPV1 agonists, such as resiniferatoxin identified in the latex of the exotic Euphorbia resinifera, trigger hyperalgesia followed by long lasting, peripheral analgesia. The present study reports on the analgesic properties of Euphorbia bicolor, a relative of E. resinifera, native to the Southern United States. The study hypothesized that E. bicolor latex extract induces long-lasting, non-opioid peripheral analgesia in a rat model of inflammatory pain. Both inflamed and non-inflamed adult male and female rats were injected with the methanolic extract of E. bicolor latex into the hindpaw and changes in pain behaviors were reassessed at various time points up to 4 weeks. Primary sensory neuron cultures also were treated with the latex extract or vehicle for 15 min followed by stimulation with the TRPV1 agonist capsaicin. Results showed that E. bicolor latex extract evoked significant pain behaviors in both male and female rats at 20 min post-injection and lasting around 1–2 h. At 6 h post-injection, analgesia was observed in male rats that lasted up to 4 weeks, whereas in females the onset of analgesia was delayed to 72 h post-injection. In sensory neurons, latex extract significantly reduced capsaicin-evoked CGRP release. Blocking TRPV1, but not opioid receptors, attenuated the onset of analgesia and capsaicin-induced CGRP release. Latex was analyzed by mass spectrometry and eleven candidate compounds were identified and reported here. These findings indicate that phytochemicals in the E. bicolor latex induce hyperalgesia followed by peripheral, non-opioid analgesia in both male and female rats, which occurs in part via TRPV1 and may provide novel, non-opioid peripheral analgesics that warrant further examination.
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Affiliation(s)
- Paramita Basu
- Department of Biology, Texas Woman's University, Denton, TX, United States
| | - Sirima A Tongkhuya
- Department of Biology, Texas Woman's University, Denton, TX, United States
| | - Taylor L Harris
- Department of Biology, Texas Woman's University, Denton, TX, United States
| | - Angela R Riley
- American Institute of Toxicology (AIT) Laboratories, A HealthTrackRx Company, Denton, TX, United States
| | - Camelia Maier
- Department of Biology, Texas Woman's University, Denton, TX, United States
| | - John Granger
- American Institute of Toxicology (AIT) Laboratories, A HealthTrackRx Company, Denton, TX, United States
| | - Jennie Wojtaszek
- American Institute of Toxicology (AIT) Laboratories, A HealthTrackRx Company, Denton, TX, United States
| | - Dayna L Averitt
- Department of Biology, Texas Woman's University, Denton, TX, United States
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17
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Motte J, Sturm D, Fisse A, Labedi A, Grüter T, Greiner T, Eitner L, Kumowski N, Enax-Krumova E, Maier C, Tegenthoff M, Gold R, Schmidt-Wilcke T, Yoon M, Pitarokoili K. FV 18 Corneal immune cell infiltration in corneal confocal microscopy confirm as biomarker for disease activity in autoimmune inflammatory neuropathies. Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.04.628] [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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18
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Kokail C, Maier C, van Bijnen R, Brydges T, Joshi MK, Jurcevic P, Muschik CA, Silvi P, Blatt R, Roos CF, Zoller P. Self-verifying variational quantum simulation of lattice models. Nature 2019; 569:355-360. [DOI: 10.1038/s41586-019-1177-4] [Citation(s) in RCA: 264] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 03/21/2019] [Indexed: 11/09/2022]
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19
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Basu P, Hornung RS, Maier C, Averitt DL. Reduction of Oxidative Stress as a Potential Mechanism Underlying
Euphorbia bicolor
Latex Extract‐Induced Analgesia in a Rat Model of Orofacial Pain. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.808.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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]
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20
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Wicking M, Maier C, Tesarz J, Bernardy K. [EMDR as a psychotherapeutic approach in the treatment of chronic pain : Is Eye Movement Desensitization and Reprocessing an effective therapy for patients with chronic pain who do not suffer from posttraumatic stress disorder?]. Schmerz 2019; 31:456-462. [PMID: 28656479 DOI: 10.1007/s00482-017-0231-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The efficacy of Eye Movement Desensitization and Reprocessing (EMDR) has been demonstrated for posttraumatic stress disorder. Despite promising research, it is still not clear if EMDR is a similarly effective treatment for chronic pain. Controlled trials are lacking and whether specific mechanisms underlie the effects remains unknown. The treatment of chronic pain aims at a reduction of subjective pain sensations. To achieve this goal without the usage of pain medications, i. e. through psychotherapy, is desirable for many reasons (e. g. reduction of treatment costs and side effects). Whether or not EMDR is an effective intervention for all chronic pain patients (or just a specific subgroup) constitutes an important question for psychological pain research.
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Affiliation(s)
- M Wicking
- Universitätsklinik für Anästhesiologie, Intensiv‑, Palliativ- und Schmerzmedizin, Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland.
| | - C Maier
- Universitätsklinik für Anästhesiologie, Intensiv‑, Palliativ- und Schmerzmedizin, Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
| | - J Tesarz
- Klinik für Allgemeine Innere Medizin und Psychosomatik, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - K Bernardy
- Universitätsklinik für Anästhesiologie, Intensiv‑, Palliativ- und Schmerzmedizin, Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
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21
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Basu P, Maier C. Phytoestrogens and breast cancer: In vitro anticancer activities of isoflavones, lignans, coumestans, stilbenes and their analogs and derivatives. Biomed Pharmacother 2018; 107:1648-1666. [DOI: 10.1016/j.biopha.2018.08.100] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/17/2018] [Accepted: 08/17/2018] [Indexed: 01/11/2023] Open
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22
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Kruppa C, Maier C, Zahn P, Schildhauer TA. [Changes in age distribution and frequency of comorbidities in patients in the occupational insurance association treatment process]. Unfallchirurg 2018; 122:626-632. [PMID: 30306216 DOI: 10.1007/s00113-018-0569-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Due to the demographic development the proportion of older patients has increased. These show at least a higher rate of comorbidities, which affects the length of inpatient hospital stay. Until now no uniform recording exists for such comorbidities within the occupational insurance association system even if the clinical relevance is beyond dispute. Adaptations within the system with increased interdisciplinary treatment are necessary. OBJECTIVE The aim of this study was to analyze changes in the age distribution and the frequency of comorbidities in patients in the occupational insurance association system. METHODS The study was a retrospective analysis of age distribution and comorbidities of all operatively treated occupational insurance association patients in 2005 (n = 631), 2010 (n = 1180) and 2015/2016 (n = 2315). A comparison of the age groups ≤29 years, 30-49 years, 50-65 years and ≥66 years was performed. RESULTS The proportion of patients aged 50-65 years showed a significant increase: 2005 (26.5%), 2010 (30.5%) and 2015/2016 (37.3%) (p < 0.001) and an increased proportion of patients with at least 1 comorbidity: 2005 (38.7%), 2010 (52.5%) and 2015/2016 (52.9%) (p = 0.01). This was statistically significant (p < 0.001, p = 0.005) within the age group 30-49 years (2005: 31.1%, 2015/2016: 49.0%) and the age group 50-65 years (2005: 55.7%, 2015/2016: 67.1%). Significant changes were found for arterial hypertension, morbid obesity, thyroid and respiratory diseases. In addition, there was an increase in multimorbid patients. DISCUSSION A changing age distribution with a tendency to an increased number of older patients and an increased frequency of comorbidities could be determined. In the present documentation system of the occupational insurance association treatment procedure these comorbidities are insufficiently recorded and considered, even though their clinical relevance is indisputable. Adaptations with respect to intensified interdisciplinary cooperation are necessary.
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Affiliation(s)
- C Kruppa
- Chirurgische Universitätsklinik und Poliklinik, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil Bochum, Ruhr-Universität Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Deutschland.
| | - C Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil Bochum, Ruhr-Universität Bochum, Bochum, Deutschland.,Universitätsklinik für Anästhesiologie, Intensiv‑, Palliativ- und Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil Bochum, Ruhr-Universität Bochum, Bochum, Deutschland
| | - P Zahn
- Universitätsklinik für Anästhesiologie, Intensiv‑, Palliativ- und Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil Bochum, Ruhr-Universität Bochum, Bochum, Deutschland
| | - T A Schildhauer
- Chirurgische Universitätsklinik und Poliklinik, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil Bochum, Ruhr-Universität Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Deutschland
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23
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Schwarzer A, Kaisler M, Kipping K, Seybold D, Rausch V, Maier C, Vollert J. Opioid intake prior to admission is not increased in elderly patients with low-energy fractures: A case-control study in a German hospital population. Eur J Pain 2018; 22:1651-1661. [PMID: 29758586 DOI: 10.1002/ejp.1247] [Citation(s) in RCA: 4] [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] [Accepted: 04/29/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Recent studies revealed an increased prescription rate of opioids for elderly patients suffering bone fractures. To gain further insight, we conducted face-to-face interviews in the present study to compare the opioid intake between patients with low-energy fractures and patients suffering from internal diseases. METHODS In this case-control study, 992 patients, aged 60 years and older, were enrolled between March 2014 and February 2015. The interview comprised a fall and medication history, comorbidities, mobility and other risk factors for fractures. Odds ratios (OR) and a multiple logistic regression model were calculated. RESULTS The number of patients with pre-admission opioid intake in the last 12 months was comparable in the fracture (n = 399, 13.3%) and the control group (n = 593, 14.7% OR: 0.89, CI: 0.62-1.29). The number of patients with current opioid intake of short duration (<3 months) was similar in both groups (14% vs. 20%; OR: 0.66, CI: 0.23-1.93). Patients with opioid intake in the fracture group reported more frequently fatigue as an adverse event of opioid medication (58% vs. 30%; OR: 3.32, CI: 1.48-7.45). Patients with opioid intake showed more severe comorbidities and significantly decreased mobility compared to those without opioids. CONCLUSION Elderly patients internalized due to low-energy fractures did not take opioids more frequently than patients with internal admission, for both short (<3 months) and longer duration intake. Patients with opioid intake were generally in poorer physical condition. The risk of fracture might increase in patients suffering from fatigue as a side effect of opioid medication. SIGNIFICANCE This study is based on face-to-face interviews with patients, including details about side effects and fracture history, providing a more pronounced picture of the relation of opioid intake and risk of fracture.
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Affiliation(s)
- A Schwarzer
- Department of Pain Medicine, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - M Kaisler
- Department of Pain Medicine, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - K Kipping
- Department of Pain Medicine, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - D Seybold
- Department of General and Trauma Surgery, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - V Rausch
- Department of General and Trauma Surgery, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - C Maier
- Department of Pain Medicine, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - J Vollert
- Department of Pain Medicine, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Germany.,Pain Research, Department of Surgery and Cancer, Imperial College London, UK.,Medical Faculty Mannheim, Center of Biomedicine and Medical Technology Mannheim CBTM, Heidelberg University, Germany
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Pilloud M, Maier C, Scott G, Edgar H. Molar crenulation trait definition and variation in modern human populations. HOMO 2018; 69:77-85. [DOI: 10.1016/j.jchb.2018.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 05/28/2018] [Indexed: 01/03/2023]
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25
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Eitner L, Özgül Ö, Enax-Krumova E, Vollert J, Maier C, Höffken O. Conditioned pain modulation using painful cutaneous electrical stimulation or simply habituation? Eur J Pain 2018; 22:1281-1290. [DOI: 10.1002/ejp.1215] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2018] [Indexed: 01/01/2023]
Affiliation(s)
- L. Eitner
- Department of Pain Medicine; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
- Department of Neuropediatrics; Ruhr-University Bochum; University Children's Hospital; Germany
| | - Ö.S. Özgül
- Department of Neurology; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
| | - E.K. Enax-Krumova
- Department of Neurology; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
| | - J. Vollert
- Department of Pain Medicine; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
- Pain Research; Department of Surgery and Cancer; Imperial College; London UK
- Center of Biomedicine and Medical Technology Mannheim CBTM; Medical Faculty Mannheim; Heidelberg University; Germany
| | - C. Maier
- Department of Pain Medicine; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
| | - O. Höffken
- Department of Neurology; Ruhr-University Bochum; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH Bochum; Germany
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Basu P, Harris T, Tongkhuya S, Riley A, Wojtaszek J, Granger J, Averitt DL, Maier C. Euphorbia bicolor
(
Euphobiaceae
) Latex Extract Induces Antinociception and Analgesia in a Rat Inflammatory Pain Model. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.656.8] [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)
| | | | | | - Angela Riley
- AIT Laboratories A HealthTrackRx CompanyDentonTX
| | | | - John Granger
- AIT Laboratories A HealthTrackRx CompanyDentonTX
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Knaup P, Maier C, Mludek V, Singer R, Skonetzki S, Wolff AC, Haux R, Kulikowski C, Ammenwerth E. Digital Libraries and Recent Medical Informatics Research. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractThe Yearbook of Medical Informatics is published annually by the International Medical Informatics Association (IMIA) and contains a selection of recent excellent papers on medical informatics research (http://www.med.uni-heidelberg.de/mi/yearbook/index.htm). The special topic of the just published Yearbook 2001 is “Digital Libraries and Medicine”. Digital libraries have changed dramatically and will continue to change the way we work with medical knowledge. The selected papers present recent research and new results on digital libraries. As usual, the Yearbook 2001 also contains a variety of papers on other subjects relevant to medical informatics, such as Electronic Patient Records, Health Information Systems, Health and Clinical Management, Decision Support Systems, Education, as well as Image and Signal Processing. This paper will briefly introduce the contributions covering digital libraries and will show how medical informatics research contributes to this important topic.
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Kulikowski C, Bohne A, Ganser K, Haux R, Knaup P, Maier C, Michel A, Singer R, Wolff AC, Ammenwerth E. Medical Imaging Informatics and Medical Informatics: Opportunities and Constraints. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives:
The Yearbook of Medical Informatics is published annually by the International Medical Informatics Association (IMIA) and contains a selection of recent excellent papers on medical informatics research (http://www.yearbook.uni-hd.de). The 2002 Yearbook of Medical Informatics took as its theme the topic of Medical Imaging Informatics. In this paper, we will summarize the contributions of medical informatics researchers to the development of medical imaging informatics, discuss challenges and opportunities of imaging informatics, and present the lessons learned from the IMIA Yearbook 2002.
Results and Conclusions:
Medical informatics researchers have contributed to the development of medical imaging methods and systems since the inception of this field approximately 40 years ago. The Yearbook presents selected papers and reviews on this important topic.In addition, as usual, the Yearbook 2002 also contains a variety of papers and reviews on other subjects relevant to medical informatics, such as Bioinformatics, Computer-supported education, Health and clinical management, Health information systems, Knowledge processing and decision support, Patient records, and Signal processing.
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Maier C, Lang L, Storf H, Vormstein P, Bieber R, Bernarding J, Herrmann T, Haverkamp C, Horki P, Laufer J, Berger F, Höning G, Fritsch HW, Schüttler J, Ganslandt T, Prokosch HU, Sedlmayr M. Towards Implementation of OMOP in a German University Hospital Consortium. Appl Clin Inform 2018; 9:54-61. [PMID: 29365340 PMCID: PMC5801887 DOI: 10.1055/s-0037-1617452] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background
In 2015, the German Federal Ministry of Education and Research initiated a large data integration and data sharing research initiative to improve the reuse of data from patient care and translational research. The Observational Medical Outcomes Partnership (OMOP) common data model and the Observational Health Data Sciences and Informatics (OHDSI) tools could be used as a core element in this initiative for harmonizing the terminologies used as well as facilitating the federation of research analyses across institutions.
Objective
To realize an OMOP/OHDSI-based pilot implementation within a consortium of eight German university hospitals, evaluate the applicability to support data harmonization and sharing among them, and identify potential enhancement requirements.
Methods
The vocabularies and terminological mapping required for importing the fact data were prepared, and the process for importing the data from the source files was designed. For eight German university hospitals, a virtual machine preconfigured with the OMOP database and the OHDSI tools as well as the jobs to import the data and conduct the analysis was provided. Last, a federated/distributed query to test the approach was executed.
Results
While the mapping of ICD-10 German Modification succeeded with a rate of 98.8% of all terms for diagnoses, the procedures could not be mapped and hence an extension to the OMOP standard terminologies had to be made.
Overall, the data of 3 million inpatients with approximately 26 million conditions, 21 million procedures, and 23 million observations have been imported. A federated query to identify a cohort of colorectal cancer patients was successfully executed and yielded 16,701 patient cases visualized in a Sunburst plot. Conclusion
OMOP/OHDSI is a viable open source solution for data integration in a German research consortium. Once the terminology problems can be solved, researchers can build on an active community for further development.
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Wenz H, Dickhaus H, Maier C. Robust Detection of Sleep Apnea from Holter ECGs. Methods Inf Med 2018; 53:303-7. [DOI: 10.3414/me13-02-0043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 04/22/2014] [Indexed: 11/09/2022]
Abstract
SummaryIntroduction: This article is part of the Focus Theme of Methods of Information in Medicine on “Biosignal Interpretation: Advanced Methods for Studying Cardiovascular and Respiratory Systems”.Objectives: Detect presence of sleep-related breathing disorders (SRBD) in epochs of 1 min by signal analysis of Holter ECG recordings.Methods: In 121 patients, 140 synchronized polysomnograms (PSGs) and 8-channel Holter ECGs were recorded. The only excluded condition was persistent arrhythmias. Respiratory events as scored from the PSGs were mapped to a 1 min grid and served as reference for ECG-based detection. Moreover, 69/70 recordings of the Physionet Sleep Apnea ECG Database (PADB) were included. We performed receiver operating characteristics analysis of a single, novel time-domain feature, the joint local similarity index (jLSI). Based on cross-correlation, the jLSI quantifies the time-locked occurrence of characteristic low-frequency (LF) modulations in ECG respiratory myogram interference (RMI), QRS amplitude (QRSA) and heart rate.Results: Joint oscillations in QRSA, RMI and the envelope of RMI identified positive epochs with a sensitivity of 0.855 (PADB: 0.873) and a specificity of 0.86 (PADB: 0.88). Inclusion of heart rate did not improve detection accuracy.Conclusions: Joint occurrence of LF-modulations in QRSA and RMI is a characteristic feature of SRBD that is robustly quantified by the jLSI and permits reliable and reproducible detection of sleep apnea in very heterogeneous settings.
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Dickhaus H, Maier C. Central Sleep Apnea Detection from ECG-derived Respiratory Signals. Methods Inf Med 2018; 49:462-6. [DOI: 10.3414/me09-02-0047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 01/17/2010] [Indexed: 11/09/2022]
Abstract
Summary
Objectives: This study examines the suitability of recurrence plot analysis for the problem of central sleep apnea (CSA) detection and delineation from ECG-derived respiratory (EDR) signals.
Methods: A parameter describing the average length of vertical line structures in recurrence plots is calculated at a time resolution of 1 s as ‘instantaneous trapping time’. Threshold comparison of this parameter is used to detect ongoing CSA. In data from 26 patients (duration 208 h) we assessed sensitivity for detection of CSA and mixed apnea (MSA) events by comparing the results obtained from 8-channel Holter ECGs to the annotations (860 CSA, 480 MSA) of simultaneously registered polysomnograms.
Results: Multivariate combination of the EDR from different ECG leads improved the detection accuracy significantly. When all eight leads were considered, an average instantaneous vertical line length above 5 correctly identified 1126 of the 1340 events (sensitivity 84%) with a total number of 1881 positive detections.
Conclusions: We conclude that recurrence plot analysis is a promising tool for detection and delineation of CSA epochs from EDR signals with high time resolution. Moreover, the approach is likewise applicable to directly measured respiratory signals.
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Abstract
Summary
Objectives
: This article deals with recognition of sleep apnea, using solely information available from multilead ECGs.
Methods
: Characteristic variations in heart rhythm and amplitude of the ECG are compared with respect to their diagnostic accuracy by means of an ROC analysis that is performed on a local similarity index. In 38 8-lead ECGs, each minute is classified with respect to occurrence of apnea events and the result is validated against expert annotations derived from synchronized polysomnographic recordings. Moreover, the results are compared to those obtained from the well known Physionet apnea-ECG database.
Results
: Whereas the effect of amplitude modulation yields consistent results on both data sets (ROC-area 89.0% vs. 88.3%), a remarkable loss in performance is observed for the frequently applied heart rhythm (89.8% vs. 77.9%). Examples illustrating the reasons for this difference are given and discussed. With respect to aggregation of multi-lead information, two methods (PCA vs. averaging) are compared. The results indicate that averaging performs better (89.3%) than the adaptively estimated PCA (87.2) even when applied to a reduced set of leads.
Conclusions
: It is concluded that sleep apnea recognition from heart rhythm should always be complemented by analysis of the amplitude variations of the ECG.
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Maier C, Basu P, Dixon D, Varghese S. Detection of estrogenic, antiestrogenic, and drug synergistic activities of seven commercially available fruits by In Vitro reporter assays. Pharmacognosy Res 2018. [DOI: 10.4103/pr.pr_111_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Maier C, Eitner L, Altenscheidt J, Nicolas V, Martinez R. [Unsuccessful pain treatment over 6 years of a thoracic radiculopathy caused by an unrecognized Tarlov cyst]. Schmerz 2017; 32:56-60. [PMID: 29270852 DOI: 10.1007/s00482-017-0262-6] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This article presents a case of unsuccessful pharmaceutical and invasive pain treatment for 6 years without any adequate diagnostics in a female suffering from unilateral thoracic radiculopathy (Th8, right) leading to severe disability and unemployment. The origin was an undetected Tarlov cyst. After resection of the cyst the pain and other complaints disappeared (follow up: 8 months) without need for further pain medication. This case underlines the necessity of adequate diagnostics ahead of long-term pain treatment. Thoracic Tarlov cysts are very uncommon but should be included in the differential diagnosis because curative treatment may be possible.
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Affiliation(s)
- C Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland.
| | - L Eitner
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
| | - J Altenscheidt
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
| | - V Nicolas
- Institut für Diagnostische Radiologie, Interventionelle Radiologie und Nuklearmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
| | - R Martinez
- Abteilung für Neurochirurgie und Neurotraumatologie, , Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Deutschland
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Huber JL, Maier C, Mainka T, Mannil L, Vollert J, Homann HH. Recovery of mechanical detection thresholds after direct digital nerve repair versus conduit implantation. J Hand Surg Eur Vol 2017; 42:720-730. [PMID: 28395576 DOI: 10.1177/1753193417699777] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
UNLABELLED The purpose of this study was to assess sensory and functional nerve recovery after digital nerve injury in patients with an end-to-end suture (S) or with implantation of a collagen conduit (C) to bridge a nerve gap. Fifteen S and 11 C with a follow-up of 6-36 months and 28 healthy control participants were enrolled. Methods of assessments were quantitative sensory testing, the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH), range of motion and the painDetect questionnaire. After both procedures, sensory profiles showed largely recovered function of C and Aδ fibres but severe loss of Aβ-fibre function leading to increased mechanical detection thresholds. There was only minimal allodynia. Severe pain was absent. Patients with conduits reported more functional impairment, especially in work performance, which correlated with the assessed loss of Aß-fibre function. LEVEL OF EVIDENCE III.
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Affiliation(s)
- J L Huber
- 1 Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany
| | - C Maier
- 1 Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany
| | - T Mainka
- 1 Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany.,3 Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - L Mannil
- 2 Department of Plastic Surgery and Hand Surgery, Burn Center, BG Trauma Center Duisburg, Duisburg, Germany.,4 Division of Plastic and Hand Surgery, University Hospital Zurich, Switzerland
| | - J Vollert
- 1 Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany
| | - H-H Homann
- 2 Department of Plastic Surgery and Hand Surgery, Burn Center, BG Trauma Center Duisburg, Duisburg, Germany
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Jurcevic P, Shen H, Hauke P, Maier C, Brydges T, Hempel C, Lanyon BP, Heyl M, Blatt R, Roos CF. Direct Observation of Dynamical Quantum Phase Transitions in an Interacting Many-Body System. Phys Rev Lett 2017; 119:080501. [PMID: 28952773 DOI: 10.1103/physrevlett.119.080501] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Indexed: 05/27/2023]
Abstract
The theory of phase transitions represents a central concept for the characterization of equilibrium matter. In this work we study experimentally an extension of this theory to the nonequilibrium dynamical regime termed dynamical quantum phase transitions (DQPTs). We investigate and measure DQPTs in a string of ions simulating interacting transverse-field Ising models. During the nonequilibrium dynamics induced by a quantum quench we show for strings of up to 10 ions the direct detection of DQPTs by revealing nonanalytic behavior in time. Moreover, we provide a link between DQPTs and the dynamics of other quantities such as the magnetization, and we establish a connection between DQPTs and entanglement production.
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Affiliation(s)
- P Jurcevic
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - H Shen
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
| | - P Hauke
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Theoretische Physik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - C Maier
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - T Brydges
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - C Hempel
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
| | - B P Lanyon
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - M Heyl
- Max-Planck-Institut für Physik komplexer Systeme, 01187 Dresden, Germany
- Physik Department, Technische Universität München, 85747 Garching, Germany
| | - R Blatt
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - C F Roos
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21A, 6020 Innsbruck, Austria
- Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
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Baron R, Treede RD, Birklein F, Cegla T, Freynhagen R, Heskamp ML, Kern KU, Maier C, Rolke R, Seddigh S, Sommer C, Ständer S, Maihöfner C. Treatment of painful radiculopathies with capsaicin 8% cutaneous patch. Curr Med Res Opin 2017; 33:1401-1411. [PMID: 28436279 DOI: 10.1080/03007995.2017.1322569] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND AND OBJECTIVE The treatment of neuropathic pain due to low-back (lumbosacral) radiculopathies, a common source of neuropathic pain, is challenging and often requires a multimodal therapeutic approach. The capsaicin 8% patch is the first topical analgesic licensed for peripheral neuropathic pain. To evaluate this treatment, a subset of patients with painful radiculopathy (lumbar and cervical, including ventral and dorsal rami) enrolled into the multicenter, non-interventional QUEPP study (Qutenza 2 - safety and effectiveness in peripheral neuropathic pain) was analyzed. METHODS Of the 1044 study participants, 50 were diagnosed with painful radiculopathy as only peripheral neuropathic pain syndrome and were eligible for evaluation. Patients received a single treatment (visit 1) with follow-up visits 2-5 at weeks 1-2, 4, 8 and 12. Parameters assessed at all visits included pain intensity, neuropathy symptoms and side effects. Quality of life (SF-12) and painDETECT 1 questionnaires were completed at baseline and final visit. Data was analyzed by patch application site and duration of pain. RESULTS Topical treatment led to a significant decrease of pain intensity between weeks 1/2 and week 12 versus baseline at the application sites representing dermatomes of ventral (N = 26) and dorsal rami (N = 13) of spinal nerves. A significant decline (p ≤ .001) of numeric pain rating scale scores was observed between weeks 1/2 following patch application and the end of observation (week 12) in the overall radiculopathy group (N = 50), and the groups with either 3 months to 2 years (N = 14) or >2 years (N = 23) duration of pain. Pain relief of at least 30% was observed in 50.0%, 71.4% and 39.1% of patients in the respective groups. Four patients experienced in total seven adverse drug reactions (application site pain or pruritus). CONCLUSION Effective neuropathic pain relief was observed after patch application within the innervation territories of both dorsal and ventral branches of the spinal nerve. Further controlled randomized trials are indicated.
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Affiliation(s)
- R Baron
- a Division of Neurological Pain Research and Therapy, Department of Neurology , Universitätsklinikum Schleswig-Holstein , Campus Kiel , Germany
| | - R D Treede
- b Chair of Neurophysiology, Medical Faculty Mannheim , Heidelberg University , Germany
| | - F Birklein
- c Department of Neurology , University of Mainz , Germany
| | - T Cegla
- d Department of Anesthesiology and Pain therapy , St. Josef Hospital , Wuppertal , Germany
| | - R Freynhagen
- e Department of Anaesthesiology , Benedictus Hospital Tutzing and Technische Universität München , Germany
| | - M L Heskamp
- f Medical Department , Astellas Pharma GmbH , Germany
| | - K U Kern
- g Institute of Pain Medicine/Pain Practice , Wiesbaden , Germany
| | - C Maier
- h Department of Pain Medicine , BG University Hospital Bergmannsheil GmbH, Ruhr-University Bochum , Germany
| | - R Rolke
- i Department of Palliative Medicine , Medical Faculty RWTH Aachen University , Germany
| | - S Seddigh
- j Department of Neurology , BG-Klinikum Duisburg , Germany
| | - C Sommer
- k Department of Neurology , University of Würzburg , Germany
| | - S Ständer
- l Competence Center Chronic Pruritus, Department of Dermatology , University Hospital of Münster , Germany
| | - C Maihöfner
- m Department of Neurology , General Hospital Fürth , Fürth , Germany
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Eitner L, Vollert J, Maier C, Attal N. [Botulinum toxin A injections in neuropathic pain : A post-hoc subgroup analysis of patients with peripheral nerve injury]. Schmerz 2017; 31:524-526. [PMID: 28660416 DOI: 10.1007/s00482-017-0235-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The randomized controlled trial (RCT) presented in this article showed significant relief in neuropathic pain following subcutaneous injections of botulinum toxin A over 24 weeks compared to placebo. This result was confirmed in a novel post-hoc analysis of the subgroup of 46 patients with peripheral nerve injury. Relevant adverse effects did not occur during the RCT.
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Affiliation(s)
- L Eitner
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle de la Camp-Platz 1, 44789, Bochum, Deutschland.
| | - J Vollert
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle de la Camp-Platz 1, 44789, Bochum, Deutschland
| | - C Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bürkle de la Camp-Platz 1, 44789, Bochum, Deutschland
| | - N Attal
- INSERM U‑987, Centre d'Evaluation et de Traitement de la Douleur, Hôpital Ambroise Paré, AP-HP, Boulogne-Billancourt, Université Versailles-Saint-Quentin, Paris, Frankreich
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Erlenwein J, Petzke F, Stamer U, Meißner W, Nauck F, Pogatzki-Zahn E, Koppert W, Maier C. [Role of anesthesiology in pain medicine and palliative care treatment in German hospitals : Survey of department heads of anesthesiology on treatment structures]. Anaesthesist 2017; 66:579-588. [PMID: 28447107 DOI: 10.1007/s00101-017-0309-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 11/02/2016] [Revised: 03/20/2017] [Accepted: 03/24/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND The aim of this analysis was to describe the role of anesthesiology departments in pain medicine and palliative care services in German hospitals. METHOD In the year 2012, all heads of departments of anesthesiology registered with the German Society of Anesthesiology and Intensive Care Medicine were surveyed about structures of pain medicine and palliative care services in their hospitals using a standardized postal questionnaire. RESULTS Out of 408 returned questionnaires (response rate 47%) 403 could be evaluated. Of the hospitals 58% had a designated pain medicine service, in 36 (9%) of the hospitals this was organized as an independent department and in 195 (57%) as part of another department, mostly the department of anesthesiology. The "pain clinic" as an outpatient service was the most common form of structure for pain medicine services (41%). Inpatient pain medicine units were available in 77 (19%) of the hospitals and a partial inpatient unit in the form of a day hospital in 26 (7%) of the hospitals. For the care of inpatients from other departments, there was an intrahospital pain consultation service in 166 of the hospitals, which was the only structure for pain medicine in 32 of the 231 hospitals that reported having a designated pain medicine service. In 160 pain medicine services anesthesiologists were the only medical practitioners and in a further 18 both anesthesiologists and other specialists were available (orthopedist/orthopedic surgeons n = 6, internal medicine n = 4, psychiatrist n = 2, general practitioner = 1 and neurologist n = 1). Only two hospitals had no anesthesiologist in the pain medicine team and for the remaining 51 hospitals no information was provided. In 189 of the 231 hospitals with pain medicine services, there was at least 1 physician with special qualifications in pain management. In 97 (44%) of the hospitals psychologists were part of the team with 53 having at least 1 psychologist with a special qualification in chronic pain management. Of the hospitals, 16% had a specialized department for palliative care, in 32% a specialized palliative care service was part of another department, which was the department of anesthesiology in 30%. Of the hospitals 56% had a palliative care consultation service, 41% had a specialized inpatient palliative care unit, 6% an outpatient clinic, 4% a day hospital and in 16% a specialized outpatient palliative care (SOPC) serving the community was incorporated. Inpatient consultation services and the SOPC were more common when the department of anesthesiology was involved in the palliative care services. CONCLUSION In German hospitals, the departments of anesthesiology make a significant contribution to the provision of both pain medicine and palliative care services. Nevertheless, the respective structures of care are often incomplete or even lacking. There were shortcomings in terms of organization and qualification of the team in pain medicine services (e.g. no doctor with special qualifications in pain management or no psychologist). Palliative care services are more often organized as independent departments than as pain medicine services. Engagement of the anesthesiology department in palliative care is linked to a broader scope of the services provided, which might reflect the capacity of many anesthesiologists to work in an interdisciplinary manner and across interfaces.
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Affiliation(s)
- J Erlenwein
- Klinik für Anästhesiologie, GF Schmerzmedizin, Universitätsmedizin Göttingen, Robert Koch Str. 40, 37075, Göttingen, Deutschland. .,Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland. .,Arbeitskreis Akutschmerz, Deutsche Schmerzgesellschaft e. V., Berlin, Deutschland.
| | - F Petzke
- Klinik für Anästhesiologie, GF Schmerzmedizin, Universitätsmedizin Göttingen, Robert Koch Str. 40, 37075, Göttingen, Deutschland.,Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Arbeitskreis Akutschmerz, Deutsche Schmerzgesellschaft e. V., Berlin, Deutschland
| | - U Stamer
- Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Arbeitskreis Akutschmerz, Deutsche Schmerzgesellschaft e. V., Berlin, Deutschland.,Klinik für Anästhesiologie und Schmerztherapie, Universitätsklinik Inselspital Bern, Bern, Schweiz.,Departement für Klinische Forschung, Universität Bern, Bern, Schweiz
| | - W Meißner
- Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Arbeitskreis Akutschmerz, Deutsche Schmerzgesellschaft e. V., Berlin, Deutschland.,Klinik für Anästhesiologie und Intensivmedizin, Sektion Schmerztherapie, Universitätsklinikum Jena, Jena, Deutschland.,Klinik für Innere Medizin II, Abt. Palliativmedizin, Universitätsklinikum Jena, Jena, Deutschland
| | - F Nauck
- Klinik für Palliativmedizin, Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - E Pogatzki-Zahn
- Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Arbeitskreis Akutschmerz, Deutsche Schmerzgesellschaft e. V., Berlin, Deutschland.,Klinik für Anästhesiologie, operative Intensivmedizin und Schmerztherapie, Universitätsklinikum Münster, Münster, Deutschland
| | - W Koppert
- Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Klinik für Anästhesiologie und Intensivmedizin, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - C Maier
- Wissenschaftlicher Arbeitskreis Schmerzmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin e. V., Nürnberg, Deutschland.,Abteilung für Schmerzmedizin, Universitätsklinik Bergmannsheil, Bochum, Deutschland
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Hegelmaier T, Kumowski N, Mainka T, Vollert J, Goertz O, Lehnhardt M, Zahn P, Maier C, Kolbenschlag J. Remote ischaemic conditioning decreases blood flow and improves oxygen extraction in patients with early complex regional pain syndrome. Eur J Pain 2017; 21:1346-1354. [DOI: 10.1002/ejp.1033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2017] [Indexed: 12/17/2022]
Affiliation(s)
- T. Hegelmaier
- Department of Pain Medicine; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
| | - N. Kumowski
- Department of Pain Medicine; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
| | - T. Mainka
- Department of Pain Medicine; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
- Department of Neurology; University Medical Center Hamburg Eppendorf; Germany
| | - J. Vollert
- Department of Pain Medicine; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
- Center of Biomedicine and Medical Technology Mannheim (CBTM), Medical Faculty Mannheim; Heidelberg University; Germany
| | - O. Goertz
- Department of Plastic and Hand Surgery, Burn Center; BG University Hospital Bergmannsheil, Ruhr University; Bochum Germany
- Department of Plastic, Reconstructive and Aesthetic Surgery, Hand Surgery; Martin-Luther-Hospital; Berlin Germany
| | - M. Lehnhardt
- Department of Plastic and Hand Surgery, Burn Center; BG University Hospital Bergmannsheil, Ruhr University; Bochum Germany
| | - P.K. Zahn
- Department of Anesthesiology, Intensive and Palliative Care; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
| | - C. Maier
- Department of Pain Medicine; BG University Hospital Bergmannsheil; Ruhr University; Bochum Germany
| | - J. Kolbenschlag
- Department of Plastic and Hand Surgery, Burn Center; BG University Hospital Bergmannsheil, Ruhr University; Bochum Germany
- Department of Plastic, Reconstructive and Aesthetic Surgery, Hand Surgery; Martin-Luther-Hospital; Berlin Germany
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Häuser W, Bernardy K, Maier C. [Long-term opioid therapy in chronic noncancer pain. A systematic review and meta-analysis of efficacy, tolerability and safety in open-label extension trials with study duration of at least 26 weeks]. Schmerz 2016; 29:96-108. [PMID: 25503691 DOI: 10.1007/s00482-014-1452-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The efficacy and safety of long-term (≥ 6 months) opioid therapy (LtOT) in chronic noncancer pain (CNCP) is under debate. A systematic review with meta-analysis of the efficacy and harms of opioids in open-label extension studies of randomized controlled trials (RCTs) has not been conducted until now. METHODS We screened MEDLINE and clinicaltrials.gov (through to December 2013), as well as reference sections of systematic reviews of long-term RCTs of opioids in CNCP. We included open-label extension trials with a study duration ≥ 26 weeks of RCTs of ≥ 2 weeks duration. Using a random effects model, pooled estimates of event rates for categorical data and standardized mean differences (SMD) for continuous variables were calculated. RESULTS We included 11 open-label extension studies with 2445 participants with nociceptive (low back, osteoarthritis) and neuropathic (radicular, polyneuropathy) pain. Median study duration was 26 (range 26-108) weeks. Four studies tested oxycodone, two studies tramadol and buprenorphine; hydromorphone, morphine, oxymorphone and tapentadol were each tested in one study. Of the patients randomized at baseline, 28.5 % (95 % confidence interval, CI, 17.9-39.2 %) finished the open-label period; 53.5 % (95 % CI 38.1-68.2 %) of patients entering the open-label period finished the open-label period. In sum, the total loss was 71.5 % (95 % CI 60.9-83.1 %) of all patients primarily included into the RCT. A total of 4.9 % (95 % CI 2.9-8.2 %) of patients dropped out due lack of efficacy; 16.8 % (95 % CI 11.0-24.8 %) dropped out to due adverse events (AE) in the open-label period and 0.08 % (95 % CI 0.001-0.05 %) of patients died during the open-label period. Only one study systematically assessed aberrant drug behavior of the patients: 5.7 % (95 % CI 3.4-9.6 %) showed aberrant drug behavior in the opinion of the investigators and 2.6 % (95 % CI 1.2-5.8 %) were judged to show aberrant drug behavior by independent expert assessment. There was no significant change (p = 0.50) in pain intensity between the end of the randomized period and the end of open-label phase (SMD 0.19 [- 0.03, 0.41]; six studies with 1360 participants). CONCLUSION Only a minority of patients selected for opioid therapy at randomization finished the long-term open-label study. However, sustained effects of pain reduction could be demonstrated in these patients. LtOT can be considered in carefully selected and monitored CNCP patients who experience clinically meaningful pain reduction with at least tolerable AE in short-term opioid therapy. The English full-text version of this article is freely available at SpringerLink (under "Supplementary Material").
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Affiliation(s)
- W Häuser
- Innere Medizin I, Klinikum Saarbrücken gGmbH, Winterberg 1, 66119, Saarbrücken, Deutschland,
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Häuser W, Bock F, Engeser P, Hege-Scheuing G, Hüppe M, Lindena G, Maier C, Norda H, Radbruch L, Sabatowski R, Schäfer M, Schiltenwolf M, Schuler M, Sorgatz H, Tölle T, Willweber-Strumpf A, Petzke F. [Recommendations of the updated LONTS guidelines. Long-term opioid therapy for chronic noncancer pain]. Schmerz 2016; 29:109-30. [PMID: 25616996 DOI: 10.1007/s00482-014-1463-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND The regular update of the German S3 guidelines on long-term opioid therapy for chronic noncancer pain (CNCP), the"LONTS" (AWMF registration number 145/003), began in November 2013. METHODS The guidelines were developed by 26 scientific societies and two patient self-help organisations under the coordination of the Deutsche Schmerzgesellschaft (German Pain Society). A systematic literature search in the Cochrane Central Register of Controlled Trials (CENTRAL), Medline and Scopus databases (up until October 2013) was performed. Levels of evidence were assigned according to the classification system of the Oxford Centre for Evidence-Based Medicine. The strength of the recommendations was established by multistep formal procedures, in order to reach a consensus according to German Association of the Medical Scientific Societies ("Arbeitsgemeinschaft der Wissenschaftlich Medizinischen Fachgesellschaften", AWMF) regulations. The guidelines were reviewed by the Drug Commission of the German Medical Association, the Austrian Pain Society and the Swiss Association for the Study of Pain. RESULTS Opioids are one drug-based treatment option for short- (4-12 weeks), intermediate- (13-25 weeks) and long-term (≥ 26 weeks) therapy of chronic osteoarthritis, diabetic polyneuropathy, postherpetic neuralgia and low back pain. Contraindications are primary headaches, as well as functional somatic syndromes and mental disorders with the (cardinal) symptom pain. For all other clinical presentations, a short- and long-term therapy with opioid-containing analgesics should be evaluated on an individual basis. Long-term therapy with opioid-containing analgesics is associated with relevant risks (sexual disorders, increased mortality). CONCLUSION Responsible application of opioid-containing analgesics requires consideration of possible indications and contraindications, as well as regular assessment of efficacy and adverse effects. Neither an uncritical increase in opioid application, nor the global rejection of opioid-containing analgesics is justified in patients with CNCP.
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Affiliation(s)
- W Häuser
- Medizinisches Versorgungszentrum (Schmerztherapie, Palliativmedizin, Psychiatrie, Psychotherapie) Saarbrücken - St. Johann, Saarbrücken, Deutschland,
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Ziegler D, Keller J, Maier C, Pannek J. Diabetische Neuropathie. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0042-113785] [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: 10/20/2022]
Affiliation(s)
- D. Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetesforschung; Klinik für Endokrinologie und Diabetologie, Universitätsklinikum Düsseldorf
| | - J. Keller
- Medizinische Klinik, Israelitisches Krankenhaus, Hamburg
| | - C. Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Ruhr-Universität, Bochum
| | - J. Pannek
- Neuro-Urologie, Schweizer Paraplegiker-Zentrum Nottwil, Schweiz
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Höffken O, Özgül Î, Enax-Krumova E, Tegenthoff M, Maier C. EPV 13. Pain-related evoked potentials depict the effect of conditioned pain modulation in healthy subjects. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.033] [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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Malewicz NM, Mainka T, Maier C. Schmerzreduktion nach topischem Capsaicin 8 %. Schmerz 2016; 30:362-4. [DOI: 10.1007/s00482-016-0131-8] [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: 11/24/2022]
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Maier C, Ramming A, Schett G, Distler J, Beyer C. FRI0004 Inhibition of Phosphodiesterase 4 (PDE4) Reduces Dermal Fibrosis by Interfering with The Release of Pro-Fibrotic Cytokines from M2-Macrophages. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Maier C, Wulf H. Wie die organisierte Akutschmerztherapie in Deutschland begann. Schmerz 2016; 30:291-2. [DOI: 10.1007/s00482-016-0100-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mainka T, Malewicz N, Baron R, Enax-Krumova E, Treede RD, Maier C. Presence of hyperalgesia predicts analgesic efficacy of topically applied capsaicin 8% in patients with peripheral neuropathic pain. Eur J Pain 2016; 20:116-129. [DOI: 10.1002/ejp.703] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- T. Mainka
- Department of Pain Medicine; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH; Ruhr-University Bochum; Germany
- Department of Neurology; University Medical Center Hamburg-Eppendorf; Germany
| | - N.M. Malewicz
- Department of Pain Medicine; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH; Ruhr-University Bochum; Germany
| | - R. Baron
- Sektion Neurologische Schmerzforschung und Therapie; Klinik für Neurologie; Universitätsklinikum Schleswig-Holstein; Kiel Germany
| | - E.K. Enax-Krumova
- Department of Neurology; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH; Ruhr-University Bochum; Germany
| | - R.-D. Treede
- Center for Biomedicine and Medical Technology Mannheim; Heidelberg University; Germany
| | - C. Maier
- Department of Pain Medicine; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH; Ruhr-University Bochum; Germany
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Upadhyay P, Maier C. Effects of 17<i>β</i>-Estradiol on Growth, Primary Metabolism, Phenylpropanoid-Flavonoid Pathways and Pathogen Resistance in <i>Arabidopsis thaliana</i>. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ajps.2016.713160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
BACKGROUND Fruits are considered one of the richest sources of natural antioxidants. Their consumption has been linked to the prevention of oxidative stress-induced diseases. OBJECTIVE In this study, in vitro antioxidant activities of blueberry, jackfruit, blackberry, black raspberry, red raspberry, strawberry, and California table grape extracts were evaluated. MATERIALS AND METHODS Antioxidant activities were determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant potential (FRAP), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), nitric oxide (NO), superoxide anion (O2-) scavenging assays, and ferric reducing power. RESULTS Black raspberry extract had the highest phenolic (965.6 ± 2.9 mg gallic acid equivalents [GAE]/g), flavonoid (186.4 ± 1.7 mg quercetin equivalents/g), and proanthocyanidin (2677 ± 71.1 mg GAE/g) contents. All fruit extracts exhibited increasing radical scavenging activities with increased concentrations. At 100 μg/ml, red raspberry extract showed the highest ferric reducing power (A700 =0.3 ± 0.0052) and FRAP activity (A593 =11.43 mM Fe2+/g). Black raspberry extract (100 μg/ml) exhibited the highest DPPH activity (A517 =89.03 ± 0.0471). Jackfruit extract (100 μg/ml) had the highest ABTS (A734 =35.6 ± 0.613), NO (A540 =81.7 ± 0.2), and O2- radical scavenging (A230 =55.5 ± 0.2) activities. Positive correlations were observed between IC50 values for different radical scavenging activities and different polyphenolics. Red raspberry extract had the highest Pearson's coefficient values (0.952-1) between total phenolics, flavonoids, and proanthocyanidins and DPPH and superoxide radical scavenging activities. CONCLUSIONS The antioxidant rich fruits in this study are good source of functional food and nutraceuticals that have the potential to improve human health. SUMMARY All fruit extracts exhibited increasing radical scavenging activities with increased concentrationsBlack raspberry extract is enriched in total phenols, flavonoids, and proanthocyanidins and showed the highest 2,2-diphenyl-1-picrylhydrazyl scavenging activity and red raspberry extract showed the highest ferric reducing power and ferric reducing antioxidant potential activityJackfruit extract exhibited the highest 2,2'azino-bis (3-ethylbenzothiazoline-6-sulfonicacid) diammonium salt, nitric oxide, O2- scavenging activitiesPositive correlations were observed between IC50 values for different radical scavenging activities and different polyphenolics. Abbreviations Used: Abs: Absorbance, ABTS: 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, BHT: Butylated hydroxytoluene, DPPH: 2,2-diphenyl-1-picrylhydrazyl, DW: Dry weight, FRAP: Ferric reducing antioxidant potential, FW: Fresh weight, GAE: Gallic acid equivalents, NADH: β-nicotinamide adenine dinucleotide hydrate, NFL: The National Food Laboratories, NO: Nitric oxide, ONPG: ortho-nitrophenyl-β-galactoside, PBS: Phosphate buffered saline, PMS: Phenazine methosulfate, QE: Quercetin equivalents, ROS: Reactive oxygen species, SD: Standard deviation, SOD: Superoxide dismutase, TCA: Trichloroacetic acid, TPTZ: 2,4,6-tris(2-pyridyl)-s-triazine, Trolox: (±)-6-hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid.
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Affiliation(s)
- Paramita Basu
- Department of Biology, Texas Woman's University, Denton, TX 76204-5799, USA
| | - Camelia Maier
- Department of Biology, Texas Woman's University, Denton, TX 76204-5799, USA
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