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Franz D, Schröder U, Shayduk R, Arndt B, Noei H, Vonk V, Michely T, Stierle A. Hydrogen Solubility and Atomic Structure of Graphene Supported Pd Nanoclusters. ACS Nano 2021; 15:15771-15780. [PMID: 34633788 DOI: 10.1021/acsnano.1c01997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We investigated the atomic structure of graphene supported Pd nanoclusters and their interaction with hydrogen up to atmospheric pressures at room temperature by surface X-ray diffraction and scanning tunneling microscopy. We find that Ir seeded Pd nanocluster superlattices with 1.2 nm cluster diameters can be grown on the graphene/Ir(111) moiré template with high structural perfection. The superlattice clusters are anchored through the rehybridized graphene to the Ir support, which superimposes a 2.0% inplane compression onto the clusters. During hydrogen exposure at 10 mbar pressure and room temperature, a significant part of the clusters gets unpinned from the superlattice. The clusters in registry undergo an out-of-plane expansion only, whereas the detached clusters expand in in- and out-of-plane directions. The formation of a hydrogen rich PdHx α' phase was not observed. After exposure to 1 bar, the majority of the clusters are unpinned from superlattice sites, due to their surface interaction with hydrogen and possible spill over to the graphene support. Only minor sintering was observed, which is more pronounced for the unpinned clusters. The results give evidence that ultrasmall Pd clusters on graphene are a stable hydrogen storage system with reduced hydrogen storage hysteresis and maintain a large surface area for hydrogen chemisorption.
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Affiliation(s)
- Dirk Franz
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, D-22607 Germany
- Physics Department, University of Hamburg, Hamburg, D-20355 Germany
| | - Ulrike Schröder
- Institute of Physics II, University of Cologne, Cologne, D-50937 Germany
| | - Roman Shayduk
- Deutsches Elektronen Synchrotron (DESY), Hamburg, D-22607 Germany
| | - Björn Arndt
- Physics Department, University of Hamburg, Hamburg, D-20355 Germany
- Deutsches Elektronen Synchrotron (DESY), Hamburg, D-22607 Germany
| | - Heshmat Noei
- Deutsches Elektronen Synchrotron (DESY), Hamburg, D-22607 Germany
| | - Vedran Vonk
- Deutsches Elektronen Synchrotron (DESY), Hamburg, D-22607 Germany
| | - Thomas Michely
- Institute of Physics II, University of Cologne, Cologne, D-50937 Germany
| | - Andreas Stierle
- Physics Department, University of Hamburg, Hamburg, D-20355 Germany
- Deutsches Elektronen Synchrotron (DESY), Hamburg, D-22607 Germany
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Heydorn R, Schlüter N, Jagau R, Kwade A, Schröder U, Dohnt K, Krull R. Application of functional biopolymers for sustainable batteries. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055237] [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: 11/08/2022]
Affiliation(s)
- R. L. Heydorn
- Technische Universität Braunschweig Institut für Bioverfahrenstechnik Rebenring 56 38106 Braunschweig Germany
| | - N. Schlüter
- Technische Universität Braunschweig Institut für Ökologische und Nachhaltige Chemie Hagenring 30 38106 Braunschweig Germany
| | - R. Jagau
- Technische Universität Braunschweig Institut für Partikeltechnik Volkmaroder Str. 5 38104 Braunschweig Germany
| | - A. Kwade
- Technische Universität Braunschweig Institut für Partikeltechnik Volkmaroder Str. 5 38104 Braunschweig Germany
| | - U. Schröder
- Technische Universität Braunschweig Institut für Ökologische und Nachhaltige Chemie Hagenring 30 38106 Braunschweig Germany
| | - K. Dohnt
- Technische Universität Braunschweig Institut für Bioverfahrenstechnik Rebenring 56 38106 Braunschweig Germany
| | - R. Krull
- Technische Universität Braunschweig Institut für Bioverfahrenstechnik Rebenring 56 38106 Braunschweig Germany
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Licka T, Van den Hoven R, Schröder U, Hahn C, Zsoldos R. P.73Correlation of gluteus medius muscle activities at walk and trot with myopathy changes on biopsies of the exact same locations in horses without clinical signs of type 1 polysaccharide storage myopathy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dagher G, Becker KF, Bonin S, Foy C, Gelmini S, Kubista M, Kungl P, Oelmueller U, Parkes H, Pinzani P, Riegman P, Schröder U, Stumptner C, Turano P, Sjöback R, Wutte A, Zatloukal K. Pre-analytical processes in medical diagnostics: New regulatory requirements and standards. N Biotechnol 2019; 52:121-125. [DOI: 10.1016/j.nbt.2019.05.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/08/2019] [Indexed: 11/29/2022]
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Abstract
The current article is an experience report on the establishment of an ENT clinic in Asmara/Eritrea and the organization of regular work stays for the further education of local colleagues. Objectives of the project are content and structural support for self-help and thus achievement of sustainable development aid, which benefits both the medical development of the country and the care of the local patients.
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Affiliation(s)
- M Jungehülsing
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, Klinikum Ernst von Bergmann gGmbH, Charlottenstr. 72, 14467, Potsdam, Deutschland.
| | - U Markmiller
- Plastische und ästhetische Chirurgie am Untermain, Aschaffenburg, Deutschland
| | - U Schröder
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, Universitätsklinikum Schleswig - Holstein, Lübeck, Deutschland
| | - A Book
- Evangelisches Krankenhaus Hubertus, Berlin, Deutschland
| | - A Teclu
- ENT Clinic, Orotta Hospital, Asmara, Eritrea
| | - E Stennert
- Emeritus Univ.-Klinik und Poliklinik für HNO-Heilkunde, Universität zu Köln, Köln, Deutschland
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Riegman PHJ, Becker KF, Zatloukal K, Pazzagli M, Schröder U, Oelmuller U. How standardization of the pre-analytical phase of both research and diagnostic biomaterials can increase reproducibility of biomedical research and diagnostics. N Biotechnol 2019; 53:35-40. [PMID: 31202859 DOI: 10.1016/j.nbt.2019.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/17/2019] [Accepted: 06/12/2019] [Indexed: 12/01/2022]
Abstract
Comparison of published biomedical studies shows that a large proportion are irreproducible, causing severe damage to society and creating an image of wasted investments. These observations are of course damaging to the biomedical research field, which is currently full of future promise. Precision medicine and disease prevention are successful, but are progressing slowly due to irreproducible study results. Although standardization is mentioned as a possible solution, it is not always clear how this could decrease or prevent irreproducible results in biomedical studies. In this article more insight is given into what quality, norms, standardization, certification, accreditation and optimized infrastructure can accomplish to reveal causes of irreproducibility and increase reproducibility when collecting biomaterials. CEN and ISO standards for the sample pre-analytical phase are currently being developed with the support of the SPIDIA4P project, and their role in increasing reproducibility in both biomedical research and diagnostics is demonstrated. In particular, it is described how standardized methods and quality assurance documentation can be exploited as tools for: 1) recognition and rejection of 'not fit for purpose' samples on the basis of detailed sample metadata, and 2) identification of methods that contribute to irreproducibility which can be adapted or replaced.
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Affiliation(s)
- P H J Riegman
- Erasmus MC Rotterdam, Pathology department, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - K F Becker
- Technical University of Munich, Institute of Pathology, Trogerstrasse 18, 81675 Munich, Germany
| | - K Zatloukal
- Diagnostic and Research Center for Molecular BioMedicine, Institute of Pathology, Medical University of Graz, Austria
| | - M Pazzagli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Italy
| | - U Schröder
- DIN Deutsches Institut für Normung e.V., Saatwinkler Damm 42/43, 13627 Berlin, Germany
| | - U Oelmuller
- QIAGEN GmbH, MDx Development, QIAGEN Str. 1, 40724 Hilden, Germany
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Kubannek F, Moß C, Schröder U, Krewer U. Kinetics and rate limitations in a glycerol-fed microbial fuel cell. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855070] [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)
- F. Kubannek
- Technische Universität Braunschweig; Institut für Energie- und Systemverfahrenstechnik; Franz-Liszt-Straße 35 38106 Braunschweig Germany
| | - C. Moß
- Technische Universität Braunschweig; Institut für Ökologische und Nachhaltige Chemie; Hagenring 30 38106 Braunschweig Germany
| | - U. Schröder
- Technische Universität Braunschweig; Institut für Ökologische und Nachhaltige Chemie; Hagenring 30 38106 Braunschweig Germany
| | - U. Krewer
- Technische Universität Braunschweig; Institut für Energie- und Systemverfahrenstechnik; Franz-Liszt-Straße 35 38106 Braunschweig Germany
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Schmalenbach M, Jungehülsing M, Theissen P, Dietlein M, Schröder U, Eschner W, Stennert E, Schicha H, Schmidt M. 18F-FDG PET for detecting recurrent head and neck cancer, local lymph node involvement and distant metastases. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1625597] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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
Aim: Assessment of the clinical value of 18F-FDG-PET for detection of recurrent head and neck cancer, local lymph node involvement and distant metastases comparing a qualitative visual with a semiquantitative analysis (SUV values). Patients, methods: Retrospective evaluation of 73 18F-FDG PET studies in 55 patients by use of a four-step qualitative visual grading system and calculation of standard uptake values in pathological lesions. Calculation of SUV values in normal regions for generating a map of physiological 18F-FDG distribution. Correlation to histopathological findings and clinical follow-up. Results: 1. Qualitative visual analysis of 18F-FDG PET studies: a) local recurrence sensitivity 79%, specificity 97%, positive predictive value 95%, negative predictive value 85%, and diagnostic accuracy 89%; b) local metastatic lymph nodes 100%, 95%, 85%, 100%, 96%; c) distant metastases 100%, 98%, 86%, 100%, 98%, respectively. 2. Semiquantitative analysis had only little incremental, non-significant value in comparison to qualitative visual analysis for the detection of a local recurrence in two patients: a) local recurrence: sensitivity 83%, specificity 100%, positive predictive value 100%, negative predictive value 88%, and diagnostic accuracy 93%; b) local metastatic lymph nodes or c) distant metastases did not change in comparison to qualitative visual analysis. Conclusion: 18F-FDG PET is an effective tool for re-staging of patients with suspected recurrence after therapy for head and neck cancer.
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Schröder U. Jenseits der Batterie - Elektrochemie in nachhaltiger Chemie und Biotechnologie. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ritter M, Teudt IU, Meyer JE, Schröder U, Kovács G, Wollenberg B. Second-line treatment of recurrent HNSCC: tumor debulking in combination with high-dose-rate brachytherapy and a simultaneous cetuximab-paclitaxel protocol. Radiat Oncol 2016; 11:6. [PMID: 26792072 PMCID: PMC4719334 DOI: 10.1186/s13014-016-0583-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Accepted: 01/01/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND AND PURPOSE After the failure of first-line treatment, the clinical prognosis in head and neck cancer (HNSCC) deteriorates. Effective therapeutic strategies are limited due to the toxicity of previous treatments and the diminished tolerance of surrounding normal tissue. This study demonstrates a promising second-line regimen, with function preserving surgical tumor debulking, followed by a combination of postoperative interstitial brachytherapy and a simultaneous protocol of cetuximab and taxol. PATIENTS AND METHODS From January 2006 to May 2013, 197 patients with HNSCC were treated with brachytherapy at the University Hospital Schleswig-Holstein Campus Lübeck, including 94 patients due to recurrent cancer. Within these, 18 patients were referred to our clinic because of early progressive disease following first- or second-line treatment failure. They received the new palliative regimen. A matched-pair analysis including recurrent tumor stage, status of resection margins, tissue invasion and previous therapy was performed to evaluate this treatment retrospectively. Overall survival (OS), disease-free survival (DFS), functional outcome and treatment toxicity was analyzed on the basis of medical records and follow-up data. RESULTS DFS and OS of the study group were 8.7 and 14.8 months. Whereas, DFS and OS of the control group, treated only by function preserving tumor debulking and brachytherapy, was 3.9 and 6.1 months respectively. This demonstrates a positive trend through the additional use of the cetuximab-taxane protocol. Furthermore, no increase of therapy induced toxicities was displayed. CONCLUSION Pre-treated patients with a further relapse benefit from the 'cetuximab-taxane recurrency scheme'. It seems to be a valuable complement to interdisciplinary and multimodal tumor therapy, which improves OS and results in acceptable toxicity.
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Affiliation(s)
- M Ritter
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Schleswig-Holstein Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
| | - I U Teudt
- Department of Otorhinolaryngology, Head and Neck Surgery, Asklepios Hospital Altona, Paul-Ehrlich-Straße 1, 22763, Hamburg, Germany.
| | - J E Meyer
- Department of Otorhinolaryngology, Head and Neck Surgery, Asklepios Hospital St.Georg, Lohmühlenstraße 5, 20099, Hamburg, Germany.
| | - U Schröder
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Schleswig-Holstein Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
| | - G Kovács
- Interdisziplinary Brachytherapy Unit, University Hospital Schleswig-Holstein Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
| | - B Wollenberg
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Schleswig-Holstein Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
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Bruchhage KL, Wollenberg B, Schröder U. [Submental artery island flaps for reconstruction in the head and neck region]. HNO 2015; 63:747-51. [PMID: 26507713 DOI: 10.1007/s00106-015-0072-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Reconstruction of defects after extirpation of head and neck neoplasms is a highly challenging and complex surgical undertaking. Commonly used techniques, such as the radial forearm flap or anterior lateral thigh flap, have numerous disadvantages, e.g., donor-site morbidity, poor color match for cutaneous reconstruction, and excessive tissue bulk for intraoral reconstruction. Use of a submental artery island flap is a relatively new and increasingly performed option for reconstruction in the head and neck region. MATERIALS AND METHODS From March 2013 to August 2015, 12 patients were treated with a submental island flap after surgical resection of intraoral carcinomas or cutaneous neoplasms of the lower half of the face. CASE DESCRIPTION This paper reports on two cases. The first case describes reconstruction of the floor of the mouth using a pull-through technique after resection of a squamous cell carcinoma. The submental flap was pedicled on the contralateral side, since neck dissection of regions I-V had been performed on the ipsilateral side. The second case is a reconstruction of the lower midface with parts of the upper lip, after removal of a cutaneous spinalioma. In a N0 neck, no neck dissection was performed. The flap healed without problems in both patients, leading to a very good functional and cosmetic outcome. CONCLUSION The submental island flap demonstrates reliability and versatility for head and neck reconstructions. Its minimal donor site morbidity, excellent cosmetic match, pliability, and relative ease of dissection and application confer a definite advantage over distant flaps.
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Affiliation(s)
- K-L Bruchhage
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Schleswig Holstein, Ratzeburger Allee 160, 23538, Lübeck, Deutschland.
| | - B Wollenberg
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Schleswig Holstein, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
| | - U Schröder
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Schleswig Holstein, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
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Schröder U, Licka TF, Zsoldos R, Hahn CN, MacIntyre N, Schwendenwein I, Schwarz B, Van Den Hoven R. Effect of Diet on Haflinger Horses With GYS1 Mutation (Polysaccharide Storage Myopathy Type 1). J Equine Vet Sci 2015. [DOI: 10.1016/j.jevs.2015.03.197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rudolph S, Schröder U, Bayanov R, Blenke K, Bayanov I. Optimal electrolyte flow distribution in hydrodynamic circuit of vanadium redox flow battery. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.11.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fröhlich A, Dohnt K, Biedendieck R, Riedl S, Schröder U, Krull R. Transkriptomanalyse von Pseudomonas putidaKT2440 unter anaeroben elektrochemischen Wachstumsbedingungen. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Vogl TJ, Al-Nawas B, Beutner D, Geisthoff U, Gutinas-Lichius O, Naujoks C, Reich R, Schröder U, Sproll C, Teymoortash A, Ußmüller J, Wittekindt C, Zenk J, Fischer S. Updated S2K AWMF guideline for the diagnosis and follow-up of obstructive sialadenitis--relevance for radiologic imaging. ROFO-FORTSCHR RONTG 2014; 186:843-6. [PMID: 25127110 DOI: 10.1055/s-0034-1366867] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The interdisciplinarily developed German S2k AWMF guideline for the treatment of obstructive sialadenitis represents a new standard in the guideline program of the AWMF, the German Society for Consultants and the clinical disciplines working in the field of diseases of the head and neck region. In the last few years new diagnostic and therapeutic possibilities have been established in obstructive chronic Sialadenitis offering individually optimized therapeutic strategies. Only a few years ago extirpation of the whole affected gland was the only relevant therapy option. Nowadays therapeutic options such as interventional sialendoscopy and extracorporeal shock-wave lithotripsy (ESWL) are available in combination with marsupialization or incision of the duct. If possible the focus is on preserving the main glandular duct. In the following article the relevant aspects for the diagnostic radiologic procedures are presented.
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Affiliation(s)
- T J Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital of Frankfurt
| | - B Al-Nawas
- Department of Oral and Maxillofacial Surgery, University Medicine Mainz
| | - D Beutner
- Department of Otolaryngology, University Hospital of Cologne
| | - U Geisthoff
- Department of Otolaryngology, Hospitals of Cologne
| | | | - C Naujoks
- Department of Oral, Maxillar and Plastic Surgery, University Hospital of Düsseldorf
| | - R Reich
- Department of Oral, Maxillofacial and Plastic Surgery, University Hospital of Bonn
| | - U Schröder
- Department of Otolaryngology, University Hospital of Schleswig-Holstein, Campus Lübeck
| | - C Sproll
- Department of Oral, Maxillar and Plastic Surgery, University Hospital of Düsseldorf
| | - A Teymoortash
- Clinic for Otolarnygology, University Hospital of Gießen/Marburg, Gießen
| | - J Ußmüller
- Otolaryngology, Center for Otolaryngology Regensburg
| | - C Wittekindt
- Clinic for Otolarnygology, University Hospital of Gießen/Marburg, Gießen
| | - J Zenk
- Clinic for Otolaryngology, Hospital of Augsburg
| | - S Fischer
- Department of Diagnostic and Interventional Radiology, University Hospital of Frankfurt
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Rudolph S, Schröder U, Bayanov I, Hage D. Measurement, simulation and in situ regeneration of energy efficiency in vanadium redox flow battery. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Al-Nawas B, Beutner D, Geisthoff U, Naujoks C, Reich R, Schröder U, Sproll C, Teymoortash A, Ußmüller J, Vogl T, Wittekindt C, Zenk J, Guntinas-Lichius O. [The new S2k AWMF guideline for the treatment of obstructive sialadenitis in commented short form]. Laryngorhinootologie 2013; 93:87-94. [PMID: 23929209 DOI: 10.1055/s-0033-1351285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A new and interdisciplinary S2k AWMF guideline for the treatment of obstructive sialadenitis has been published. There have been several technical achievements, for instance in the field of ultrasonography, via sialendoscopy, or by MR-sialography, that have increased the possibilities for diagnosis and treatment of patients with obstructive sialadenitis. In the past, the treatment of choice in case of unsuccessful medical treatment was a complete extirpation of the affected salivary gland. Nowadays, using a variety of modern treatment options (like sialendoscopy, or extracorporeal shock-waves lithotripsy sometimes combined with salivary duct incision), it is possible in most patients, especially in cases of sialolithiasis, to preserve the affected gland. A functional recovery after gland-sparing surgery is described but more data is needed to finally evaluate the long-time results. The new guideline describes all relevant steps to diagnose an obstructive sialadenitis and values all diagnostic tools critically. Finally, all recommendable therapy options are described and valued, too.
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Affiliation(s)
- B Al-Nawas
- Klinik und Poliklinik für Mund-Kiefer- und Gesichtschirurgie, Plastische Operationen, Universitätsmedizin Mainz, Mainz
| | - D Beutner
- ENT, Head and Neck, University of Cologne, Cologne
| | - U Geisthoff
- Kliniken der Stadt Köln, Klinik für Hals-Nasen-Ohrenheilkunde, Köln
| | - C Naujoks
- Klinik für Mund-, Kiefer- und Plastische Gesichtschirurgie, Universitätsklinikum Düsseldorf, Düsseldorf
| | - R Reich
- Klinik und Poliklinik für Mund-, Kiefer- und Plastische Gesichtschirurgie, Universitätsklinikum Bonn, Bonn
| | - U Schröder
- Klinik für Hals-, Nasen-, und Ohrenheilkunde, Campus Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck
| | - C Sproll
- Klinik für Mund-, Kiefer- und Plastische Gesichtschirurgie, Universitätsklinikum Düsseldorf, Düsseldorf
| | - A Teymoortash
- Standort Marburg, Hals- Nasen- und Ohrenklinik, Universitätsklinikum Gießen Marburg, Marburg
| | - J Ußmüller
- Gemeinschaftspraxis, HNO-Zentrum Regensburg, Regensburg
| | - T Vogl
- Institut für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Frankfurt, Frankfurt
| | | | - J Zenk
- Hals-Nasen-Ohren-Klinik, Kopf und Halschirurgie, Universität Erlangen, Erlangen
| | - O Guntinas-Lichius
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Friedrich-Schiller-Universität
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Neugebauer U, Assmann C, Schröder U, Ramoji A, Glaser U, Beleites C, Pfister W, Popp J, Bauer M. Raman spectroscopic investigation of the interaction of Enterococcus faecalis and vancomycin: towards a culture-independent antibiotic susceptibility test. Crit Care 2012. [PMCID: PMC3504886 DOI: 10.1186/cc11772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Abstract
abstractThe absorption of water in glass fiber reinforced epoxy resins is a complex process. With dynamic-mechanical measurements it is possible to distinguish locations of water in the resin-glass interphase, in micro-cracks of the resin, and diluted in the bulk polymer. The dominant mechanism of incorporation depends on the resin/hardener system, the surface treatment of the glass fabrics, and the sorption temperature.
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Abstract
AbstractDynamic-mechanical measurements were used to study the properties of the interphase in glass fibre reinforced epoxy resins. The immobilisation of the polymer chains in the interphase is determined by the curing system, the annealing process, and the surface treatment of the glass fibres.
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Schröder U, Schönweiler R, Wollenberg B, Gehrking E. [Unilateral extended medialization thyroplasty. Treatment for total aspiration after laser surgery and radiotherapy of laryngeal cancer]. HNO 2008; 56:467-70. [PMID: 18345526 DOI: 10.1007/s00106-008-1704-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Total aspiration is a rare complication after extended laser surgery for laryngeal cancer with adjuvant radiotherapy. PATIENTS AND METHODS Two patients with long-standing total aspiration after laser surgery with radiotherapy despite intensified swallowing therapy were treated with an extended medialization thyroplasty. RESULTS Postoperatively, both patients were able to swallow food and liquids without aspiration. One patient no longer has a gastrostomy tube and has been free from aspiration with normal oral food intake for 3 years. The second patient, with a tiny mucosal scar perforation, developed an abscess 2 months after surgery and needed revision surgery, with a subsequent return of aspiration. DISCUSSION The second patient's complication stresses the significance of an intact endolaryngeal scar because of the well-known prolonged healing of mucosa in the irradiated larynx. In our opinion, the potential benefits of medialization thyroplasty outweigh the risk of significant complications, especially after irradiation.
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Affiliation(s)
- U Schröder
- HNO, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Ratzeburger Alle 160, 23538 Lübeck.
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Abstract
Open partial laryngectomies include a broad variety of vertical or horizontal partial or supracricoid laryngectomies. Especially in Germany the excellent results of the transoral approach in combination with the CO2 laser surgery radically have diminished the indications of the open surgical techniques for laryngeal cancer staged cT1-2. In patients with laryngeal cancer staged cT3 the role of open organ-preservation surgery remains to be defined in the context of extended treatment options for endolaryngeal CO2 laser surgery and conservative larynx-preservation approaches with concurrent chemoradiation or induction chemotherapy followed by radiation therapy. With regard to the reviewed literature this manuscript will discuss current indications and future roles of open partial laryngectomies with special emphasis given to the supracricoid laryngectomies.
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Affiliation(s)
- U Schröder
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie am Universitätsklinikum Köln.
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Buonaguro L, Devito C, Tornesello ML, Schröder U, Wahren B, Hinkula J, Buonaguro FM. DNA-VLP prime-boost intra-nasal immunization induces cellular and humoral anti-HIV-1 systemic and mucosal immunity with cross-clade neutralizing activity. Vaccine 2007; 25:5968-77. [PMID: 17629365 DOI: 10.1016/j.vaccine.2007.05.052] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Revised: 05/16/2007] [Accepted: 05/23/2007] [Indexed: 01/19/2023]
Abstract
The immune response to HIV-1 virus-like particles (VLPs), presenting a clade A Ugandan gp120, has been evaluated in a mouse model by intra-nasal (i.n.) administration by a VLP+VLP homologous or a DNA+VLP heterologous prime-boost immunization protocol, including a HIV-1 DNA gp160/rev plasmid. Furthermore, the effect of the Eurocine lipid-based mucosal L3 adjuvant on the VLP immunogenicity has been assessed as well. The designed heterologous protocol is able to increase the env-specific humoral and cellular immune response, compared to the homologous protocol, which is to some extent increased by the administration of L3-adjuvanted VLP boosting dose. The anti-gag response is statistically increased in both homologous and heterologous protocols, particularly when the VLP boosting dose is adjuvanted. Immune sera from immunized animals exhibit >50% ex vivo neutralizing activity against heterologous A and B-clade viral isolates. An envelope B-cell epitope mapping shows an enhanced response against V3 epitopes all across the C2-V5 region in the heterologous prime-boost immunization strategy. The induction of humoral immunity at mucosal sites, which represents the main port of entry for the HIV-1 infection, is extremely relevant. In this framework, the DNA-VLP heterologous prime-boost protocol appears a promising preventive vaccine approach which can significantly benefit from specific mucosal adjuvants, as the Eurocine L3.
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Affiliation(s)
- L Buonaguro
- Viral Oncogenesis and Immunotherapies & AIDS Reference Center, Ist. Naz. Tumori Fond. G. Pascale, Via Mariano Semmola, 1, 80131 Naples, Italy.
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Abstract
BACKGROUND Cervical osteochondrosis is a rare differential diagnosis leading to dysphagia, inspiratory stridor and obstructive sleep apnea syndrome (OSAS). PATIENTS AND METHODS We report six cases of patients with episodes of neck pain (n=6), pain reflected to the arm (n=1), sleep apnea (n=5), inspiratory stridor (n=3) and/or unclear dysphagia (n=6), who presented between 2000 and 2003 at the Römerwallklinik Mainz and the university hospitals of Mainz and Cologne. None of these patients had symptoms of spinal or radicular compression. All underwent otorhinolaryngological and radiological examination followed by excision of anterior spondylophytes and intervertebral fusion. One patient required immediate tracheotomy due to perforation of the pharyngeal wall associated with severe supraglottic swelling. RESULTS All patients were free of inspiratory stridor postoperatively. Symptoms of dysphagia disappeared in four patients and were reduced in two. Three of five patients were free of apnea. OSAS had improved in two. Neck pain was eliminated in four cases and markedly improved in two cases. CONCLUSIONS In case of symptoms of pharyngeal compression and OSAS, a vertebragenic cause should be considered.
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Abstract
AIM To exploit the fermentative hydrogen generation and direct hydrogen oxidation for the generation of electric current from the degradation of cellulose. METHODS AND RESULTS Utilizing the metabolic activity of the mesophilic anaerobe Clostridium cellulolyticum and the thermophilic Clostridium thermocellum we show that electricity generation is possible from cellulose fermentation. The current generation is based on an in situ oxidation of microbially synthesized hydrogen at platinum-poly(tetrafluoroaniline) (Pt-PTFA) composite electrodes. Current densities of 130 mA l(-1) (with 3 g cellulose per litre medium) were achieved in poised potential experiments under batch and semi-batch conditions. CONCLUSIONS The presented results show that electricity generation is possible by the in situ oxidation of hydrogen, product of the anaerobic degradation of cellulose by cellulolytic bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY For the first time, it is shown that an insoluble complex carbohydrate like cellulose can be used for electricity generation in a microbial fuel cell. The concept represents a first step to the utilization of macromolecular biomass components for microbial electricity generation.
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Affiliation(s)
- J Niessen
- Institut für Chemie und Biochemie, Universität Greifswald, Greifswald, Germany
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Abstract
AIM To investigate the effect of Emdogain Gel (Biora AB, Malmo, Sweden), consisting of a enamel matrix derivative (EMD) in a propylene glycol alginate (PGA) vehicle, on experimentally exposed human pulps and to register postoperative symptoms. METHODOLOGY Nine pairs of contralateral premolars scheduled for extraction on orthodontic indications were included. Following a superficial pulp amputation performed with a small (016) diamond bur, either EMDgel or a mix of calcium hydroxide and sterile saline was placed at random in contact with the pulp wound. The subjects made records of symptoms and were also interviewed about pain/discomfort by a blinded examiner. After 12 weeks the teeth were extracted, prepared and subjected to light microscopic examination in which the inflammation and newly formed hard tissue in the pulp were analysed. Immunohistochemistry was performed using affinity-purified rabbit anti-EMD polyclonal antibodies. RESULTS Postoperative symptoms were less frequent in the EMDgel-treated than in the calcium hydroxide-treated teeth, especially during the first six weeks. In the EMDgel-treated teeth, new tissue partly filled the space initially occupied by the gel and hard tissue was formed alongside the exposed dentine surfaces and in patches in the adjacent pulp tissue. EMD was detected in the areas where new hard tissue had been formed. The wound area of the EMDgel-treated teeth exhibited inflammation in the majority of the teeth whereas less inflammation was seen in the calcium hydroxide-treated teeth where the hard tissue was formed as a bridge. CONCLUSIONS In the EMDgel-treated teeth, postoperative symptoms were less frequent and the amount and pattern of hard tissue formation were markedly different than in the teeth treated with calcium hydroxide. However, the operative procedure and the formulation with EMD in a PGA vehicle do not seem to be effective for the formation of a hard tissue barrier.
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Affiliation(s)
- H Olsson
- Department of Endodontics, Faculty of Odontology, Malmö University, Sweden.
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29
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Haile M, Hamasur B, Jaxmar T, Gavier-Widen D, Chambers MA, Sanchez B, Schröder U, Källenius G, Svenson SB, Pawlowski A. Nasal boost with adjuvanted heat-killed BCG or arabinomannan–protein conjugate improves primary BCG-induced protection in C57BL/6 mice. Tuberculosis (Edinb) 2005; 85:107-14. [PMID: 15687034 DOI: 10.1016/j.tube.2004.09.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2004] [Accepted: 09/27/2004] [Indexed: 01/08/2023]
Abstract
Today it is generally accepted that the Bacillus Calmette-Guerin (BCG) vaccine protects against childhood tuberculosis (TB) but this immunity wanes with age, resulting in insufficient protection against adult pulmonary TB. Hence, one possible strategy to improve the protective efficacy of the BCG vaccine would be to boost in adulthood. In this study, using the mouse model, we evaluated the ability of two new TB vaccine candidates, heat-killed BCG (H-kBCG) and arabinomannan-tetanus toxoid conjugate (AM-TT), given intransally in a novel Eurocine adjuvant, to boost a primary BCG-induced immune response and to improve protection. Young C57BL/6 mice were vaccinated with conventional BCG and, 6 months later, boosted intranasally with adjuvanted H-kBCG or AM-TT, or subcutaneously with BCG. Ten weeks after the booster, mice were challenged intravenously with M. tuberculosis (Mtb) strain H37Rv. In spleens, there was a significant reduction of cfu counts in mice boosted with either H-kBCG or AM-TT vaccines compared to the non-boosted BCG-vaccinated mice. None of the boosting regimens significantly reduced bacterial loads in lungs, compared to non-boosted BCG vaccination. However, the extent of granulomatous inflammation was significantly reduced in the lungs of mice that received two of the booster vaccines (AM-TT and conventional BCG), as compared with sham-vaccinated mice. All boosted groups, except for mice boosted with the AM-TT vaccine, responded with a proliferation of spleen T cells and gamma interferon production comparable to that induced by a single BCG vaccination.
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MESH Headings
- Administration, Intranasal
- Animals
- BCG Vaccine/administration & dosage
- BCG Vaccine/immunology
- Colony Count, Microbial/methods
- Female
- Granuloma/immunology
- Granuloma/pathology
- Interferon-gamma/immunology
- Lung/microbiology
- Lung/pathology
- Mannans/administration & dosage
- Mannans/immunology
- Mice
- Mice, Inbred C57BL
- Polysaccharides, Bacterial/administration & dosage
- Polysaccharides, Bacterial/immunology
- Spleen/microbiology
- Tetanus Toxoid/administration & dosage
- Tetanus Toxoid/immunology
- Tuberculosis Vaccines/administration & dosage
- Tuberculosis Vaccines/immunology
- Tuberculosis, Pulmonary/immunology
- Tuberculosis, Pulmonary/pathology
- Tuberculosis, Pulmonary/prevention & control
- Vaccination/methods
- Vaccines, Conjugate/administration & dosage
- Vaccines, Conjugate/immunology
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Affiliation(s)
- M Haile
- Swedish Institute for Infectious Disease Control, Department of Bacteriology, S-17182 Solna, Sweden
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30
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Schröder U. Kooperation, Koordination und Vernetzung als nachhaltige Strategien zur Förderung gesundheitlicher Chancengleichheit. Ergebnisse einer Bestandserhebung und Analyse von Gesundheitsförderungsmaßnahmen für sozial Benachteiligte aus Thüringen. Gesundheitswesen 2004. [DOI: 10.1055/s-2004-833745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Krick CM, Fuss G, Schröder U, Behnke S, Dillmann U, Schreckenberger M, Reith W, Becker G. Screening for Early Stages of Nigrostriatal Alteration (I): MR-T2-Relaxation and TCS in Healthy Subjects with Increased Echogenity of the SN. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Fuerderer S, Eysel-Gosepath K, Schröder U, Delank KS, Eysel P. Retro-pharyngeal obstruction in association with osteophytes of the cervical spine. ACTA ACUST UNITED AC 2004; 86:837-40. [PMID: 15330024 DOI: 10.1302/0301-620x.86b6.14933] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We describe five patients with cervical spondylosis and large anterior osteophytes causing pharyngeal compression. All had dysphagia, two had obstructive sleep apnoea and another two had dyspnoea and stridor on inspiration. One, with perforation of the pharynx, required emergency tracheostomy. Only three had pain in the neck or arm. Compression of the retroglottic space was confirmed in all patients by pharyngoscopy and in all the symptoms were relieved by excision of the osteophytes. Three also underwent intervertebral fusion. One had some persistent sleep apnoea.
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Affiliation(s)
- S Fuerderer
- Department of Orthopaedic Surgery, Cologne University Hospitals, Köln, Germany
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33
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Schmidt M, Schmalenbach M, Jungehülsing M, Theissen P, Dietlein M, Schröder U, Eschner W, Stennert E, Schicha H. 18F-FDG PET for detecting recurrent head and neck cancer, local lymph node involvement and distant metastases. Comparison of qualitative visual and semiquantitative analysis. Nuklearmedizin 2004; 43:91-101;quiz 102-4. [PMID: 15201950 DOI: 10.1267/nukl04030091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
AIM Assessment of the clinical value of (18)F-FDG-PET for detection of recurrent head and neck cancer, local lymph node involvement and distant metastases comparing a qualitative visual with a semiquantitative analysis (SUV values). PATIENTS, METHODS Retrospective evaluation of 73 (18)F-FDG PET studies in 55 patients by use of a four-step qualitative visual grading system and calculation of standard uptake values in pathological lesions. Calculation of SUV values in normal regions for generating a map of physiological (18)F-FDG distribution. Correlation to histopathological findings and clinical follow-up. RESULTS 1. Qualitative visual analysis of (18)F-FDG PET studies: a) local recurrence sensitivity 79%, specificity 97%, positive predictive value 95%, negative predictive value 85%, and diagnostic accuracy 89%; b) local metastatic lymph nodes 100%, 95%, 85%, 100%, 96%; c) distant metastases 100%, 98%, 86%, 100%, 98%, respectively. 2. Semiquantitative analysis had only little incremental, non-significant value in comparison to qualitative visual analysis for the detection of a local recurrence in two patients: a) local recurrence: sensitivity 83%, specificity 100%, positive predictive value 100%, negative predictive value 88%, and diagnostic accuracy 93%; b) local metastatic lymph nodes or c) distant metastases did not change in comparison to qualitative visual analysis. CONCLUSION (18)F-FDG PET is an effective tool for re-staging of patients with suspected recurrence after therapy for head and neck cancer.
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Affiliation(s)
- M Schmidt
- Klinik und Poliklinik für Nuklearmedizin, Klinikum der Universität zu Köln, Joseph-Stelzmann-Str. 9, 50924 Köln, Germany.
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34
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Staufenbiel R, Arndt G, Schröder U, Gelfert CC. [Body condition and metabolic stability as the basis for high milk yield and undisturbed fertility in dairy cows--a contribution for deduction of reference values]. Dtsch Tierarztl Wochenschr 2004; 111:214-20. [PMID: 15233343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The target of this study was to describe the interactions between body condition and various descriptors of yield and fertility. It was aimed to identify an optimal conditional range to be used in herd management which combines high milk yield with acceptable fertility traits and general health. For this purpose, backfat thickness was measured by ultrasound at 46111 dairy cows on 78 different farms and was subsequently related to production variables. Negative energy balance is getting more intense and prolonged with increasing milk yield. However a conditional nadir below 10 mm leads to decreased milk production. To reach a high production level without an increasing incidence of health disorders, conditional nadir should not decline below 13 mm backfat thickness on herd average. Lower value only lead to negligibly higher milk yield but cause a distinctively higher risk of fertility problems and culling. High herd yields do not have to be at expense of reproduction performance and can be achieved without extreme body condition losses. An efficient herd management can offset depression in fertility, which commonly is combined with increasing milk yield. A standard curve for backfat thickness throughout lactation is suggested to be used in dairy herd management.
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Affiliation(s)
- R Staufenbiel
- Klinik für Klauentiere des Fachbereiches Veterinärmedizin der Freien Universität Berlin.
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35
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Neugebauer P, Fricke J, Schröder U, Neugebauer A. [Diplopia after contusion of the posterior skull. A case for the ENT physician?]. HNO 2004; 52:814-6. [PMID: 15064929 DOI: 10.1007/s00106-004-1083-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- P Neugebauer
- Klinik und Poliklinik für HNO-Heilkunde am Klinikum, Universität zu Köln, Josef-Stelzmann-Strasse 9, 50924 Köln, Germany.
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Haile M, Schröder U, Hamasur B, Pawlowski A, Jaxmar T, Källenius G, Svenson SB. Immunization with heat-killed Mycobacterium bovis bacille Calmette–Guerin (BCG) in Eurocine™ L3 adjuvant protects against tuberculosis. Vaccine 2004; 22:1498-508. [PMID: 15063575 DOI: 10.1016/j.vaccine.2003.10.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2003] [Accepted: 10/14/2003] [Indexed: 11/28/2022]
Abstract
The current live attenuated vaccine against tuberculosis, BCG, poses a risk of disseminated infections in immunocompromised subjects. Therefore, in this study we compared the protective effect of a heat-killed bacille Calmette-Guerin (H-kBCG) vaccine given in a new adjuvant (Eurocine L3) with the protection provided by the conventional live attenuated BCG vaccine in mice (C57BL/6 and BALB/c) challenged with virulent Mycobacterium tuberculosis (strain Harlingen). The H-kBCG vaccine alone, in accordance with earlier studies, did not give any or only gave slight protection compared to sham-vaccinated controls. However, the same vaccine given with Eurocine L3 adjuvant, either formulated as a suspension or as an emulsion, afforded significant levels of protection. This protection was at least as good as that of the control live attenuated BCG vaccine. The Eurocine L3 adjuvant is approved for human use as a nasal vaccine adjuvant and a successful phase I trial with nasal immunization with diphtheria vaccine has recently been performed in Sweden. Here we show that, in mice, intranasal priming with H-kBCG in Eurocine L3 adjuvant followed by intranasal booster resulted in the same level of protection as subcutaneous priming followed by intranasal booster. All H-kBCG formulations in the Eurocine L3 adjuvant elicited mycobacterial antigen-specific serum IgG and IFN gamma responses. In general, among the different vaccine formulation(s) in the Eurocine L3 adjuvant those that produced a relatively high Th2 response, as measured by IgG1/IgG2a ratio and IFN gamma production in vitro, were the most protective. In conclusion, H-kBCG in Eurocine L3 adjuvant could represent a safe and a more stable alternative to the conventional live BCG vaccine.
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Affiliation(s)
- M Haile
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, Solna, Sweden
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37
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Staufenbiel R, Schröder U. Konditionsbeurteilung per Ultraschall in der Herdenbetreuung. Tierarztl Prax Ausg G Grosstiere Nutztiere 2004. [DOI: 10.1055/s-0038-1623482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungIn den ersten beiden Teilen dieser Veröffentlichungsreihe wurden die Auswirkungen unterschiedlicher Konditionsverläufe auf Milchleistung und Fruchtbarkeit beschrieben, im dritten Teil Referenzwerte für die Entwicklung der Rückenfettdicke im Laktationsverlauf und für die RFD-Änderung berechnet. Grundlage für diese Berechnungen waren Ultraschallmessungen der Rückenfettdicke bei 46111 Tieren in 78 verschiedenen Betrieben. In dieser Arbeit sollen die Einsatzmöglichkeiten der Methode im Rahmen der tierärztlichen Bestandsbetreuung dargestellt werden. Zu diesem Zweck wurden zwei Betriebe mit einer durchschnittlichen Milchleistung von etwa 9500 Litern FCM pro Kuh und Jahr während eines Jahres regelmäßig besucht und miteinander verglichen. Hierbei zeigte sich, dass hohe Milchleistungen auch ohne extreme Körperfettverluste zu realisieren sind. Wenn sich die durchschnittliche Konditionsentwicklung im Betrieb an der Referenzkurve orientiert, können nicht nur hohe Milchleistungen, sondern gleichzeitig auch gute Fruchtbarkeitsergebnisse erreicht werden.
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Staufenbiel R, Schröder U, Gelfert CC, Panicke L. Körperkondition und Stoffwechselstabilität als Grundlage für eine hohe Milchleistung bei ungestörter Fruchtbarkeit und allgemeiner Gesundheit von Milchkühen. Arch Anim Breed 2003. [DOI: 10.5194/aab-46-513-2003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. Title of the paper: Body condition and metabolic stability as basis of high milk yield, reproductive performance, and general health in dairy cows The target of this study was to describe the interactions between body condition and various descriptors of yield and fertility. It was aimed to identify an optimal conditional range to be used in herd management which combines high milk yield with acceptable fertility traits and general health. For this purpose, backfat thickness was measured by ultrasound at 46111 dairy cows on 78 different farms and was subsequently related to production variables. Negative energy balance is getting more intense and prolonged with increasing milk yield. However a conditional nadir below 10 mm leads to decreased milk production. To reach a high production level without an increasing incidence of health disorders, conditional nadir should not decline below 13 mm backfat thickness on herd average. Lower value only lead to negligibly higher milk yield but cause a distinctively higher risk of fertility problems and culling. High herd yields do not have to be at expense of reproduction performance and can be achieved without extreme body condition losses. An efficient herd management can offset depression in fertility, which commonly is combined with increasing milk yield. It is suggested a standard curve for backfat thickness throughout lactation to be used in dairy herd management.
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Heckmann M, Teichmann B, Schröder U, Sprengelmeyer R, Ceballos-Baumann AO. Pharmacologic denervation of frown muscles enhances baseline expression of happiness and decreases baseline expression of anger, sadness, and fear. J Am Acad Dermatol 2003; 49:213-6. [PMID: 12894067 DOI: 10.1067/s0190-9622(03)00909-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Individuals with intense frowning are commonly perceived as expressing negative emotions. Anger, fear, and sadness are associated with corrugator ("frown") muscle activity. OBJECTIVE We sought to study how faces were perceived by others after denervation of frown muscles with localized botulinum toxin injections for treatment of facial frown lines. METHODS Facial photographs were taken from volunteers before and after botulinum toxin injection. These photographs were shown to viewers who were naive to the procedure and asked to rate the expressed intensity of anger, sadness, fear, and happiness. As reference for this task we used a standard set of pictures of facial affect displaying different intensity levels for each emotion tested. RESULTS Of 40 viewers, 39 were able to discriminate different intensity levels (0%, 25%, 50%, 75%, and 100%) of emotional affect in the control task. According to their ratings faces with denervated frown muscle activity expressed relatively less anger (-40%), fear (-49%), sadness (-10%), and more happiness (+71%). CONCLUSION Frown muscle activity is essential for both negative and positive emotional expressions. Temporary denervation using botulinum toxin enhances the facial expression of positive emotion resulting in a shift rather than a loss of facial affect.
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Affiliation(s)
- Marc Heckmann
- Department of Dermatology, Ludwig Maximilians Universität, Munich, Germany
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40
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Staufenbiel R, Schröder U. Konditionsbeurteilung per Ultraschall in der Herdenbetreuung. Tierarztl Prax Ausg G Grosstiere Nutztiere 2003. [DOI: 10.1055/s-0038-1622995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungDas Ziel der Untersuchung war, Referenzwerte für einen im Rahmen der Herdenbetreuung anwendbaren Konditionsbereich zu ermitteln, der hohe Milchleistungen mit akzeptablen Fruchtbarkeitsergebnissen zu vereinen vermag. Zu diesem Zweck wurde bei 46111 Tieren in 78 verschiedenen Betrieben die Rückenfettdicke (RFD) gemessen. Durch polynomiale Regressionsanalysen wurden Referenzkurven für die Konditionsentwicklung im Laktationsverlauf und für die tägliche Änderung der RFD bei wiederholter Messung berechnet. Im Herdenmittel sollte die Kondition der Trockensteher zwischen 22 und 23 mm RFD liegen. Der Abbau von Fettgewebe in der Frühlaktation sollte nach etwa 90 Tagen zum Stillstand kommen und im Durchschnitt einen Minimalwert von 13 mm RFD erreichen. Bis zum Trockenstellen ist eine Regeneration der Körperfettreserven anzustreben, bei Hochleistungstieren sind mäßige Zunahmen innerhalb der Trockenperiode notwendig.
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Staufenbiel R, Schröder U. Konditionsbeurteilung per Ultraschall in der Herdenbetreuung. Tierarztl Prax Ausg G Grosstiere Nutztiere 2003. [DOI: 10.1055/s-0038-1622978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungIn der Frühlaktation stehen Milchleistung und Reproduktion energetisch gesehen in einer Konkurrenzsituation. Neben der Milchproduktion ist die Puerperalphase mit Rückbildung und Reinigung des Uterus ebenso zu bewältigen wie das Wiederanlaufen der Ovartätigkeit und nach Besamung die erneute Konzeption. In dieser Arbeit werden die Wechselwirkungen zwischen dem Konditionsverlauf und verschiedenen Fruchtbarkeitsparametern dargestellt. Mit zunehmendem Energiedefizit in der Frühlaktation steigen Rast-, Güst- und Zwischenkalbezeiten kontinuierlich an. Gleichzeitig verschiebt sich der Vorzeichenwechsel in der Energiebilanz mit Verschlechterung der Fruchtbarkeitswerte zeitlich nach hinten. Um gute Reproduktionsergebnisse zu erreichen, sollte die Kondition im Herdenmittel nicht unter 13 mm Rückenfettdicke fallen.
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Schröder U, Staufenbiel R. Relationships Between Backfat Thickness, Milk Yield and Fertility Traits with Resulting Standard Curves and Their Application in Dairy Herd Management. Acta Vet Scand 2003. [DOI: 10.1186/1751-0147-44-s1-p21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Schröder U, Jungehülsing M, Klussmann JP, Eckel HE. [Cricohyoidopexy (CHP) and Cricohyoidoepiglottopexy (CHEP). Indication, complications, functional und oncological results]. HNO 2003; 51:38-45. [PMID: 12557096 DOI: 10.1007/s00106-002-0663-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Subtotal laryngectomy with Cricohyoido(epiglotto)pexy (CHEP and CHP) is a commonly used surgical procedure in France, Italy and North America, but it is rarely carried out in Germany,where most laryngeal carcinomas staged T1-T3 are resected endoscopically or with total laryngectomy. OBJECTIVE To identify indications for the CHEP and CHP in a setting that uses endolaryngeal procedures as a standard approach to organ preserving surgery in laryngeal cancer patients. PATIENTS Nineteen patients with primary (n=15) or recurrent (n=4), supra- or transglottic carcinoma or carcinoma of the anterior commissure staged (r)T1b-4N0-2cM0 were treated with subtotal laryngectomy with CHEP (with or without neck dissection/radiotherapy) between October 1997 and June 1999. RESULTS Undisturbed deglutition without aspiration and respiration without tracheotomy was achieved in 17/19 patients. Three patients showed temporary pneumonia from aspiration and two patients needed further treatment for endolaryngeal synechia. Three patients died of unrelated causes. Four patients were diagnosed with local recurrence: Two of them died from tumor, two patients had curative total laryngectomy as salvage surgery. Fourteen patients are living free of disease 24-40 months after therapy. CONCLUSION CHEP is a subtotal laryngectomy with increased postoperative morbidity, but good functional results. Assuming a scrupulous indication for the extended tumors the oncological results of the CHEP are satisfying, too.
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Affiliation(s)
- U Schröder
- Universitäts-Hals-Nasen-Ohren-Klinik Köln, Cologne.
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Wrasidlo W, Schröder U, Bernt K, Hübener N, Shabat D, Gaedicke G, Lode H. Synthesis, hydrolytic activation and cytotoxicity of etoposide prodrugs. Bioorg Med Chem Lett 2002; 12:557-60. [PMID: 11844671 DOI: 10.1016/s0960-894x(01)00801-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Two 4'-propylcarbonoxy derivatives (2,3) of etoposide (1), a topoisomerase II inhibitor, were synthesized and evaluated as potential prodrugs for anticancer therapy. Their activation via hydrolysis mechanisms was determined as a function of pH in buffer solutions, in human serum and in the presence of carboxyl ester hydrolase. Cytotoxicity was determined on various tumor cell lines and compared to the parent compound. On cell lines exhibiting resistance to etoposide we observed an enhanced cytotoxicity of the prodrugs of up to three orders of magnitude.
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Affiliation(s)
- Wolf Wrasidlo
- Charité Children's Hospital, Humboldt University, Augustenburger Platz 1, 13353 Berlin, Germany.
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Quas L, Ristau T, Schröder U, Dietze F, Beyer L, Heil G. Flüssig-Flüssig-Extraktion von Silber(I) mit Aroylthiocarbamidsäure-O-estern - Einfluss von Solvens und Struktur der Extragentien. Z Anorg Allg Chem 2001. [DOI: 10.1002/1521-3749(200108)627:8<1909::aid-zaac1909>3.0.co;2-t] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Krüger R, Kuhn W, Leenders KL, Sprengelmeyer R, Müller T, Woitalla D, Portman AT, Maguire RP, Veenma L, Schröder U, Schöls L, Epplen JT, Riess O, Przuntek H. Familial parkinsonism with synuclein pathology: Clinical and PET studies of A30P mutation carriers. Neurology 2001; 56:1355-62. [PMID: 11376188 DOI: 10.1212/wnl.56.10.1355] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The authors identified the second known mutation in the alpha-synuclein(SNCA) gene, an alanine-to-proline exchange in amino acid position 30 (A30P), that cosegregates with the disease in one German family with autosomal dominantly inherited parkinsonism (ADP). The authors studied carriers of the A30P mutation to compare the phenotype of this mutation with idiopathic PD (IPD) and to assess nigrostriatal dopaminergic function in symptomatic and preclinical mutation carriers. METHODS The pedigree of the A30P family spans five generations with five affected individuals. The authors performed detailed neurologic examinations followed by mutation analysis in 11 living individuals. In three mutation carriers, two individuals with definite PD and one person at risk for PD, they used L-[18]F-fluoro-3,4-dihydroxyphenylalanine (F-DOPA), [11]C-raclopride (RAC), and [18]F-fluorodeoxyglucose (FDG) PET to investigate presynaptic dopaminergic function, dopamine D2 receptors, and cerebral energy metabolism. The authors studied the cognitive functions of carriers of the A30P mutation using neuropsychological screening. RESULTS PET studies revealed striatal presynaptic dopaminergic alterations consistent with sporadic IPD in two affected family members and no evidence for nigrostriatal dopaminergic dysfunction in one presymptomatic mutation carrier. Neuropsychological testing in four mutation carriers provided evidence for cognitive impairment as a frequent and early symptom of the A30P mutation; this is also supported by regional cerebral energy metabolism alterations in the clinically presymptomatic subject. CONCLUSIONS The phenotype of the A30P mutation in the SNCA gene is similar to that of sporadic IPD, including a high variability of the age at disease onset, ranging from 54 to 76 years. The follow-up of presymptomatic carriers of the A30P mutation may give insight into preclinical disease stages and early manifestations of PD.
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Affiliation(s)
- R Krüger
- Department of Neurology, St. Josef-Hospital, Ruhr-University, Bochum, Germany.
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Li JA, Akhadov EA, Baker J, Boatner LA, Bonart D, Flaherty FA, Fritsch J, Safron SA, Schröder U, Skofronick JG, Trelenberg TW, Van Winkle DH. Observation of a metastable periodic structure for the (001) surface of KTaO3 after cleaving in situ. Phys Rev Lett 2001; 86:4867-4870. [PMID: 11384368 DOI: 10.1103/physrevlett.86.4867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2000] [Indexed: 05/23/2023]
Abstract
Helium atom diffraction experiments carried out under ultrahigh vacuum conditions on a freshly cleaved (001) surface of KTaO3 reveal metastable features which decay over a period of several hours. The initial He diffraction pattern contains large scattering intensity satellite peaks very close to the specular reflection beam. As time from cleaving elapses, the satellite intensities diminish virtually to zero while the specular intensity increases, and the diffraction pattern evolves into one consistent with the (1x1) bulk termination surface. The data are compared with model calculations for scattering from a series of terraces at two heights with a distribution of terrace lengths [Surf. Sci. 384, 15 (1997)].
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Affiliation(s)
- J A Li
- MARTECH and Departments of Chemistry and Physics, Florida State University, Tallahassee, FL 32306, USA
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Quas L, Schröder U, Schröder B, Dietze F, Beyer L. HEAVY METAL EXTRACTION WITH THIOCARBAMIC-O-ALKYLESTERS. Solvent Extraction and Ion Exchange 2000. [DOI: 10.1080/07366290008934727] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
BACKGROUND AND OBJECTIVE The treatment of larynx carcinoma is not settled to date. This prospective study evaluates the potential role of transoral laser surgery (TLS) for larynx carcinoma in a large series of unselected patients from a single institution. MATERIALS AND METHODS A total of 504 consecutive patients with previously untreated carcinoma of the larynx were seen from 1986-1994. Their treatment modalities and results were prospectively evaluated. RESULTS TLS was used in 290 patients (58%), total laryngectomy in 130 (26%), conventional partial laryngectomies in 31 (6%), and radiotherapy in 34 (7%). Nineteen (4%) had no curative treatment. Uncorrected actuarial survival for all patients with glottic carcinoma stages I and II treated with laser surgery (n = 202) was 80.2%, cause specific survival 96.7%, and local control 85.8%. Uncorrected actuarial survival for all patients with supraglottic carcinoma stages I and II treated with laser surgery (n = 40) was 49.0%, cause specific survival 78.6%, and local control 87.3%. CONCLUSION TLS was the most important single treatment modality in this large series of unselected patients. It is a safe and time- and cost-effective alternative to radiotherapy for early stage larynx carcinoma.
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Affiliation(s)
- H E Eckel
- Department of Otorhinolaryngology, University of Cologne, Germany.
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Abstract
BACKGROUND In many parts of Germany fine-needle aspiration biopsy (FNAB) is still not part of the routine preoperative diagnostic evaluation of salivary gland neoplasms. Most opponents consider the study unnecessary and recommend that all salivary gland neoplasms should be excised. OBJECTIVE Because of this an evaluated the ability of FNAB to provide an accurate diagnosis of parotid gland neoplasms. PATIENTS AND METHOD Between January 1992 and October 1995, 336 patients referred for operative therapy of salivary gland neoplasms underwent retrospective analysis of preoperative FNAB compared with the excised tumor histology. RESULTS Results showed that the FNAB had a sensitivity of 93.1%, a specificity of 99.2%, a positive predictive value of 93.1%, a negative predictive value of 99.2% and an accuracy of 98.6%. Complications were observed in less than 1%. DISCUSSION Our findings demonstrated that the FNAB is a safe diagnostic tool that has a reliable sensitivity and high specificity for the assessment of salivary gland pathology. Since many malignant salivary gland neoplasms present with a virtual lack of symptoms indicating actual malignancy we believe that there is need for FNAB in routine preoperative diagnostic testing.
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Affiliation(s)
- U Schröder
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Universität zu Köln
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