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Wilflinger T, Lettner H, Hubmer A, Bossew P, Sattler B, Slupetzky H. Cryoconites from Alpine glaciers: Radionuclide accumulation and age estimation with Pu and Cs isotopes and 210Pb. J Environ Radioact 2018; 186:90-100. [PMID: 29056369 DOI: 10.1016/j.jenvrad.2017.06.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Cryoconites ("cold dust", derived from the Greek) are aeolian sediments accumulated on glacier surfaces. In cryoconites from the surface of the Stubacher Sonnblickkees, a temperate Austrian glacier, extremely high activity concentrations of artificial and natural radionuclides were found. Artificial radionuclides stem from two clearly distinguishable sources, global fallout from the nuclear weapons testing era deposited over a period of years until roughly 1966 and the fallout from Chernobyl in 1986, which was essentially deposited as a single input during one week. Anthropogenic radionuclides identified were 137Cs, 134Cs, 238Pu, 239+240Pu, 90Sr, 241Am, 60Co, 125Sb, 154Eu, and 207Bi. The naturally occurring radionuclides detected were the long-lived radon decay product 210Pb, the primordial radionuclide 4 K and the cosmogenic 7Be. Isotopic ratios of 134Cs/137Cs and 239+240Pu/238Pu were used to separate the nuclide inventory into the contributions of the two aforementioned sources, which show varying degrees of mixing and provide information on the mixing age of the cryoconites. Since isotopic ratios of Pu often have high uncertainties due to low absolute concentrations, age estimation based on this method can be quite inaccurate. Additional information about the age of cryoconites was obtained through analysis of 210Pb, which is constantly deposited over time.
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Affiliation(s)
- T Wilflinger
- Division of Physics and Biophysics, University of Salzburg, Department of Physics and Chemistry of Materials, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria
| | - H Lettner
- Division of Physics and Biophysics, University of Salzburg, Department of Physics and Chemistry of Materials, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria.
| | - A Hubmer
- Division of Physics and Biophysics, University of Salzburg, Department of Physics and Chemistry of Materials, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria
| | - P Bossew
- German Federal Office for Radiation Protection, Köpenicker Allee 120-130, D-10318 Berlin, Germany
| | - B Sattler
- Institute of Ecology, University of Innsbruck, Technikerstraße 25, A-6020 Insbruck, Austria
| | - H Slupetzky
- University of Salzburg, Department of Geography and Geology, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria
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Abstract
Summary
Aim: This study deals with the effect of the non-uniform attenuation correction method on myocardial tomograms of normal subjects. Method: A total of 35 patients (20 female, 15 male) without evidence of cardiac disease underwent SPET with and without attenuation correction using a dual head camera and transmission data obtained by two scanning Gd-153 line sources after administration of 400 MBq Tc-99m-tetrofosmin. Results: In non-corrected (NC) stress studies the lowest count rates were found in the inferior segments with mean differences in count rates between maxima and minima of 35.8 ± 10.8%. In attenuation corrected (AC) images the respective segmental differences averaged only 20.9 ± 3.3% and the images did not show significant count deficiency in the inferior segments. The effects of correction revealed to be sex dependent, but independent of body mass on average. Conclusion: AC using the above technique significantly reduces the variability of count rate distribution in normal subjects and improves the preconditions for accurate diagnostic evaluation of coronary artery disease using SPET.
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Bailey DL, Pichler BJ, Gückel B, Antoch G, Barthel H, Bhujwalla ZM, Biskup S, Biswal S, Bitzer M, Boellaard R, Braren RF, Brendle C, Brindle K, Chiti A, la Fougère C, Gillies R, Goh V, Goyen M, Hacker M, Heukamp L, Knudsen GM, Krackhardt AM, Law I, Morris JC, Nikolaou K, Nuyts J, Ordonez AA, Pantel K, Quick HH, Riklund K, Sabri O, Sattler B, Troost EGC, Zaiss M, Zender L, Beyer T. Combined PET/MRI: Global Warming-Summary Report of the 6th International Workshop on PET/MRI, March 27-29, 2017, Tübingen, Germany. Mol Imaging Biol 2018; 20:4-20. [PMID: 28971346 PMCID: PMC5775351 DOI: 10.1007/s11307-017-1123-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The 6th annual meeting to address key issues in positron emission tomography (PET)/magnetic resonance imaging (MRI) was held again in Tübingen, Germany, from March 27 to 29, 2017. Over three days of invited plenary lectures, round table discussions and dialogue board deliberations, participants critically assessed the current state of PET/MRI, both clinically and as a research tool, and attempted to chart future directions. The meeting addressed the use of PET/MRI and workflows in oncology, neurosciences, infection, inflammation and chronic pain syndromes, as well as deeper discussions about how best to characterise the tumour microenvironment, optimise the complementary information available from PET and MRI, and how advanced data mining and bioinformatics, as well as information from liquid biomarkers (circulating tumour cells and nucleic acids) and pathology, can be integrated to give a more complete characterisation of disease phenotype. Some issues that have dominated previous meetings, such as the accuracy of MR-based attenuation correction (AC) of the PET scan, were finally put to rest as having been adequately addressed for the majority of clinical situations. Likewise, the ability to standardise PET systems for use in multicentre trials was confirmed, thus removing a perceived barrier to larger clinical imaging trials. The meeting openly questioned whether PET/MRI should, in all cases, be used as a whole-body imaging modality or whether in many circumstances it would best be employed to give an in-depth study of previously identified disease in a single organ or region. The meeting concluded that there is still much work to be done in the integration of data from different fields and in developing a common language for all stakeholders involved. In addition, the participants advocated joint training and education for individuals who engage in routine PET/MRI. It was agreed that PET/MRI can enhance our understanding of normal and disrupted biology, and we are in a position to describe the in vivo nature of disease processes, metabolism, evolution of cancer and the monitoring of response to pharmacological interventions and therapies. As such, PET/MRI is a key to advancing medicine and patient care.
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Affiliation(s)
- D L Bailey
- Department of Nuclear Medicine, Royal North Shore Hospital, and Faculty of Health Sciences, University of Sydney, Sydney, Australia
| | - B J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard-Karls-Universität, Tübingen, Germany
| | - B Gückel
- Department of Diagnostic and Interventional Radiology, University of Tübingen, Tübingen, Germany
| | - G Antoch
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, 40225, Dusseldorf, Germany
| | - H Barthel
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - Z M Bhujwalla
- Division of Cancer Imaging Research, Department of Radiology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - S Biskup
- Praxis für Humangenetik Tübingen, Paul-Ehrlich-Str. 23, 72076, Tübingen, Germany
| | - S Biswal
- Molecular Imaging Program at Stanford (MIPS) and Bio-X, Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
| | - M Bitzer
- Department of Internal Medicine I, Eberhard-Karls University, Tübingen, Germany
| | - R Boellaard
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - R F Braren
- Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - C Brendle
- Diagnostic and Interventional Neuroradiology, Department of Radiology, Eberhard Karls University, Hoppe-Seyler-Straße 3, 72076, Tübingen, Germany
| | - K Brindle
- Cancer Research UK Cambridge Institute, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge, CB2 1GA, UK
| | - A Chiti
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Nuclear Medicine, Humanitas Research Hospital, Milan, Italy
| | - C la Fougère
- Department of Radiology, Nuclear Medicine and Clinical Molecular Imaging, Eberhard-Karls-Universität, Tübingen, Germany
| | - R Gillies
- Department of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33621, USA
| | - V Goh
- Cancer Imaging, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
- Department of Radiology, Guy's & St Thomas' Hospitals London, London, UK
| | - M Goyen
- GE Healthcare GmbH, Beethovenstrasse 239, Solingen, Germany
| | - M Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | | | - G M Knudsen
- Neurobiology Research Unit, Rigshospitalet and Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A M Krackhardt
- III. Medical Department, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - I Law
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - J C Morris
- Knight Alzheimer Disease Research Center, Washington University School of Medicine, St Louis, MO, USA
| | - K Nikolaou
- Department of Diagnostic and Interventional Radiology, University of Tübingen, Tübingen, Germany
| | - J Nuyts
- Nuclear Medicine & Molecular Imaging, KU Leuven, Leuven, Belgium
| | - A A Ordonez
- Department of Pediatrics, Center for Infection and Inflammation Imaging Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - K Pantel
- Institute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - H H Quick
- High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany
- Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany
| | - K Riklund
- Department of Radiation Sciences, Umea University, Umea, Sweden
| | - O Sabri
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - B Sattler
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - E G C Troost
- OncoRay-National Center for Radiation Research in Oncology, Dresden, Germany
- Institute of Radiooncology-OncoRay, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy, University Hospital Carl Gustav Carus and Medical Faculty of Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, Dresden, Germany
| | - M Zaiss
- High Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Tübingen, Germany
| | - L Zender
- Department of Internal Medicine VIII, University Hospital Tübingen, Tübingen, Germany
| | - Thomas Beyer
- QIMP Group, Center for Medical Physics and Biomedical Engineering General Hospital Vienna, Medical University Vienna, 4L, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Lücke C, Oppolzer B, Werner P, Foldyna B, Lurz P, Jochimsen T, Brenneis B, Lehmkuhl L, Sattler B, Grothoff M, Barthel H, Sabri O, Gutberlet M. Comparison of volumetric and functional parameters in simultaneous cardiac PET/MR: feasibility of volumetric assessment with residual activity from prior PET/CT. Eur Radiol 2017; 27:5146-5157. [PMID: 28631080 PMCID: PMC5674117 DOI: 10.1007/s00330-017-4896-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 09/26/2016] [Revised: 04/24/2017] [Accepted: 05/12/2017] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To compare cardiac left ventricular (LV) parameters in simultaneously acquired hybrid fluorine-18-fluorodeoxyglucose ([18F] FDG) positron emission tomography/magnetic resonance imaging (PET/MRI) in patients with residual tracer activity of upstream PET/CT. METHODS Twenty-nine patients (23 men, age 58±17 years) underwent cardiac PET/MRI either directly after a non-cardiac PET/CT with homogenous cardiac [18F] FDG uptake (n=20) or for viability assessment (n=9). Gated cardiac [18F] FDG PET and cine MR sequences were acquired simultaneously and evaluated blinded to the cross-imaging results. Image quality (IQ), end-diastolic (LVEDV), end-systolic volume (LVESV), ejection fraction (LVEF) and myocardial mass (LVMM) were measured. Pearson correlation and intraclass correlation coefficient (ICC), regression and a Bland-Altman analysis were assessed. RESULTS Except LVMM, volumetric and functional LV parameters demonstrated high correlations (LVESV: r=0.97, LVEDV: r=0.95, LVEF: r=0.91, LVMM: r=0.87, each p<0.05), but wide limits of agreement (LOA) for LVEDV (-25.3-82.5ml); LVESV (-33.1-72.7ml); LVEF (-18.9-14.8%) and LVMM (-78.2-43.2g). Intra- and interobserver reliability were very high (ICC≥0.95) for all parameters, except for MR-LVEF (ICC=0.87). PET-IQ (0-3) was high (mean: 2.2±0.9) with significant influence on LVMM calculations only. CONCLUSION In simultaneously acquired cardiac PET/MRI data, LVEDV, LVESV and LVEF show good agreement. However, the agreement seems to be limited if cardiac PET/MRI follows PET/CT and only the residual activity is used. KEY POINTS • [ 18 F] FDG PET-MRI is feasible with residual [ 18 F] FDG activity in patients with homogenous cardiac uptake. • Cardiac volumes and function assessed by PET/MRI show good agreement. • LVEDV and LVESV are underestimated; PET overestimates LVMM and LVEF. • Cardiac PET and MRI data correlate better when acquired simultaneously than sequentially. • PET and MRI should not assess LV parameters interchangeably.
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Affiliation(s)
- C Lücke
- Department of Diagnostic and Interventional Radiology, University Leipzig - Heart Center, Strümpellstr. 39, 04289, Leipzig, Germany.
| | - B Oppolzer
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - P Werner
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - B Foldyna
- Department of Diagnostic and Interventional Radiology, University Leipzig - Heart Center, Strümpellstr. 39, 04289, Leipzig, Germany
- Cardiac MR PET CT Program, Massachusetts General Hospital - Harvard Medical School, Boston, MA, USA
| | - P Lurz
- Clinic for Internal Medicine/Cardiology, University Leipzig - Heart Center, Leipzig, Germany
| | - T Jochimsen
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - B Brenneis
- Department of Diagnostic and Interventional Radiology, University Leipzig - Heart Center, Strümpellstr. 39, 04289, Leipzig, Germany
| | - L Lehmkuhl
- Radiologische Klinik, Herz- und Gefäß-Klinik GmbH, Bad Neustadt, Germany
| | - B Sattler
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - M Grothoff
- Department of Diagnostic and Interventional Radiology, University Leipzig - Heart Center, Strümpellstr. 39, 04289, Leipzig, Germany
| | - H Barthel
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - O Sabri
- Department of Nuclear Medicine, University Hospital Leipzig, Leipzig, Germany
| | - M Gutberlet
- Department of Diagnostic and Interventional Radiology, University Leipzig - Heart Center, Strümpellstr. 39, 04289, Leipzig, Germany
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Koinig KA, Büsing N, Wille A, Sattler B, Schmidt R, Psenner R. Diatom communities in the ice cover of an alpine lake — their influence on pH reconstruction from fossil diatom assemblages. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/03680770.1998.11901426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Beier F, Hupel C, Kuhn S, Hein S, Nold J, Proske F, Sattler B, Liem A, Jauregui C, Limpert J, Haarlammert N, Schreiber T, Eberhardt R, Tünnermann A. Single mode 4.3 kW output power from a diode-pumped Yb-doped fiber amplifier. Opt Express 2017; 25:14892-14899. [PMID: 28789071 DOI: 10.1364/oe.25.014892] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
We investigate the average power scaling of two diode-pumped Yb-doped fiber amplifiers emitting a diffraction-limited beam. The first fiber under investigation with a core diameter of 30 µm was able to amplify a 10 W narrow linewidth seed laser up to 2.8 kW average output power before the onset of transverse mode instabilities (TMI). A further power scaling was achieved using a second fiber with a smaller core size (23µm), which allowed for a narrow linewidth output power of 3.5 kW limited by stimulated Brillouin scattering (SBS). We mitigated SBS using a spectral broadening mechanism, which allowed us to further increase the output power to 4.3 kW only limited by the available pump power. Up to this power level, a high slope efficiency of 90% with diffraction-limited beam quality and without any sign of TMI or stimulated Raman scattering for a spectral dynamic range of higher than -80 dB was obtained.
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Mozet C, Kuhnt T, Sattler B, Remmele J, Thome U, Stepan H, Kluge R, Dietz A, Knoedler M. [Head and Neck Cancer in Pregnancy - Recommendations for Diagnosis and Therapy With Case Report]. Laryngorhinootologie 2016; 95:674-683. [PMID: 27764854 DOI: 10.1055/s-0042-114987] [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: 10/20/2022]
Abstract
Objective: The diagnosis of cancer in pregnancy is rare, but might become more relevant even for head and neck cancer patients due to a shift of age of primipara towards the last third of reproductive years. Unsureness exists about the risk and benefit of diagnostic and therapeutic cancer modalities for the unborn and established recommendations are still missing. But, according to recent data, even multimodal therapeutic approaches (e. g. surgery, radiation, chemotherapy) seem possible in face of pregnancy and should be traded against the risk of prematurity. Material and Methods: Our findings are discussed on the basis of a case report of a pregnant woman with advanced carcinoma of the outer ear canal and therapy options are formulated. Results: Sufficient performed diagnostic modalities do not reach imperilling uterus dosages. A growing number of case reports und studies did not detect any developmental disadvantage of children of prenatal exposed mothers by radiation or chemotherapy, whereas long-term impairments of premature infants are proven. Conclusion: In cancer in pregnancy, an immediate start of well-established therapy modalities like surgery and/or cisplatin-based chemoradiation seems to be possible without unjustifiable risks for the unborn.
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Affiliation(s)
- C Mozet
- ENT, Schwarzwald-Baar-Klinikum Villingen-Schwenningen, Villingen-Schwenningen
| | - T Kuhnt
- Bildgebung und Strahlenmedizin, Universitätsklinikum Leipzig, Leipzig
| | - B Sattler
- Medizinphysik, Klinik und Poliklinik für Nuklearmedizin Leipzig, Leipzig
| | - J Remmele
- Klinik für Strahlentherapie und Radioonklogie, Universitatsklinikum Leipzig, Leipzig
| | - U Thome
- Neonatologie, Universität Leipzig, Leipzig
| | - H Stepan
- Geburtsmedizin, Universitatsklinikum Leipzig, Leipzig
| | - R Kluge
- Nuklearmedizin, Universitatsklinikum Leipzig, Leipzig
| | - A Dietz
- Plastische Operationen, Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Universität Leipzig, Leipzig
| | - M Knoedler
- Krebszentrm (UCCL),Universitatsklinikum Leipzig, Leipzig
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Beier F, Hupel C, Nold J, Kuhn S, Hein S, Ihring J, Sattler B, Haarlammert N, Schreiber T, Eberhardt R, Tünnermann A. Narrow linewidth, single mode 3 kW average power from a directly diode pumped ytterbium-doped low NA fiber amplifier. Opt Express 2016; 24:6011-6020. [PMID: 27136795 DOI: 10.1364/oe.24.006011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report on a newly designed and fabricated ytterbium-doped large mode area fiber with an extremely low NA (~0.04) and related systematic investigations on fiber parameters that crucially influence the mode instability threshold. The fiber is used to demonstrate a narrow linewidth, continuous wave, single mode fiber laser amplifier emitting a maximum output power of 3 kW at a wavelength of 1070 nm without reaching the mode-instability threshold. A high slope efficiency of 90 %, excellent beam quality, high temporal stability, and an ASE suppression of 70 dB could be reached with a signal linewidth of only 170 pm.
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Bailey DL, Antoch G, Bartenstein P, Barthel H, Beer AJ, Bisdas S, Bluemke DA, Boellaard R, Claussen CD, Franzius C, Hacker M, Hricak H, la Fougère C, Gückel B, Nekolla SG, Pichler BJ, Purz S, Quick HH, Sabri O, Sattler B, Schäfer J, Schmidt H, van den Hoff J, Voss S, Weber W, Wehrl HF, Beyer T. Combined PET/MR: The Real Work Has Just Started. Summary Report of the Third International Workshop on PET/MR Imaging; February 17-21, 2014, Tübingen, Germany. Mol Imaging Biol 2016; 17:297-312. [PMID: 25672749 PMCID: PMC4422837 DOI: 10.1007/s11307-014-0818-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [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] [Indexed: 01/13/2023]
Abstract
This paper summarises the proceedings and discussions at the third annual workshop held in Tübingen, Germany, dedicated to the advancement of the technical, scientific and clinical applications of combined PET/MRI systems in humans. Two days of basic scientific and technical instructions with "hands-on" tutorials were followed by 3 days of invited presentations from active researchers in this and associated fields augmented by round-table discussions and dialogue boards with specific themes. These included the use of PET/MRI in paediatric oncology and in adult neurology, oncology and cardiology, the development of multi-parametric analyses, and efforts to standardise PET/MRI examinations to allow pooling of data for evaluating the technology. A poll taken on the final day demonstrated that over 50 % of those present felt that while PET/MRI technology underwent an inevitable slump after its much-anticipated initial launch, it was now entering a period of slow, progressive development, with new key applications emerging. In particular, researchers are focusing on exploiting the complementary nature of the physiological (PET) and biochemical (MRI/MRS) data within the morphological framework (MRI) that these devices can provide. Much of the discussion was summed up on the final day when one speaker commented on the state of PET/MRI: "the real work has just started".
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Affiliation(s)
- D L Bailey
- Department of Nuclear Medicine, Royal North Shore Hospital, and Faculty of Health Sciences, University of Sydney, Sydney, Australia
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Lary DJ, Lary T, Sattler B. Using Machine Learning to Estimate Global PM2.5 for Environmental Health Studies. Environ Health Insights 2015; 9:41-52. [PMID: 26005352 PMCID: PMC4431482 DOI: 10.4137/ehi.s15664] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 02/25/2015] [Accepted: 02/25/2015] [Indexed: 05/05/2023]
Abstract
With the increasing awareness of health impacts of particulate matter, there is a growing need to comprehend the spatial and temporal variations of the global abundance of ground-level airborne particulate matter (PM2.5). Here we use a suite of remote sensing and meteorological data products together with ground based observations of PM2.5 from 8,329 measurement sites in 55 countries taken between 1997 and 2014 to train a machine learning algorithm to estimate the daily distributions of PM2.5 from 1997 to the present. We demonstrate that the new PM2.5 data product can reliably represent global observations of PM2.5 for epidemiological studies. An analysis of Baltimore schizophrenia emergency room admissions is presented in terms of the levels of ambient pollution. PM2.5 appears to have an impact on some aspects of mental health.
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Langer C, Both M, Harders H, Lutz M, Eden M, Kühl C, Sattler B, Jansen O, Schaefer P, Frey N. Late enhanced computed tomography in Hypertrophic Cardiomyopathy enables accurate left-ventricular volumetry. Eur Radiol 2014; 25:575-84. [PMID: 25316053 DOI: 10.1007/s00330-014-3434-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 08/22/2014] [Accepted: 09/04/2014] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Late enhancement (LE) multi-slice computed tomography (leMDCT) was introduced for the visualization of (intra-) myocardial fibrosis in Hypertrophic Cardiomyopathy (HCM). LE is associated with adverse cardiac events. This analysis focuses on leMDCT derived LV muscle mass (LV-MM) which may be related to LE resulting in LE proportion for potential risk stratification in HCM. METHODS N=26 HCM-patients underwent leMDCT (64-slice-CT) and cardiovascular magnetic resonance (CMR). In leMDCT iodine contrast (Iopromid, 350 mg/mL; 150mL) was injected 7 minutes before imaging. Reconstructed short cardiac axis views served for planimetry. The study group was divided into three groups of varying LV-contrast. LeMDCT was correlated with CMR. RESULTS The mean age was 64.2 ± 14 years. The groups of varying contrast differed in weight and body mass index (p < 0.05). In the group with good LV-contrast assessment of LV-MM resulted in 147.4 ± 64.8 g in leMDCT vs. 147.1 ± 65.9 in CMR (p > 0.05). In the group with sufficient contrast LV-MM appeared with 172 ± 30.8 g in leMDCT vs. 165.9 ± 37.8 in CMR (p > 0.05). Overall intra-/inter-observer variability of semiautomatic assessment of LV-MM showed an accuracy of 0.9 ± 8.6 g and 0.8 ± 9.2 g in leMDCT. All leMDCT-measures correlated well with CMR (r > 0.9). CONCLUSIONS LeMDCT primarily performed for LE-visualization in HCM allows for accurate LV-volumetry including LV-MM in > 90% of the cases. KEY POINTS • LeMDCT of relatively low contrast allows for LV planimetry in HCM. • The correlation of leMDCT-based LV volumetry with gold-standard CMR was excellent (r > 0.9). • LeMDCT requires approximately 2.0mL/kgBW of dye to achieve acceptable contrast.
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Affiliation(s)
- Christoph Langer
- Department of Cardiology, Angiology and Critical Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Christian-Albrechts-Universität Kiel, Schittenhelmstr. 12, 24105, Kiel, Germany,
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Werner P, Vilia Z, Saur D, Patt M, Sattler B, Jochimsen T, Lobsien D, Then Bergh F, Dreyer A, Boltze J, Classen J, Hoffmann KT, Sabri O, Barthel H. Etablierung der kombinierten [15O]H2O-PET/MRT am Großtiermodell und bei Patienten mit (sub)akutem Schlaganfall. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371193] [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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Kurch L, Mauz-Körholz C, Bertling S, Wallinder M, Kaminska M, Marwede D, Tchavdarova L, Georgi TW, Elsner A, Barthel A, Stoevesandt D, Hasenclever D, Sattler B, Sabri O, Körholz D, Kluge R. The EuroNet paediatric hodgkin network - modern imaging data management for real time central review in multicentre trials. Klin Padiatr 2013; 225:357-61. [PMID: 24166093 DOI: 10.1055/s-0033-1354416] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Since 2007, children and adolescents with Hodgkin lymphomas are treated in the Europe-wide EuroNet-PHL trials. A real time central review process for stratification of the patients enhances quality control and efficient therapy management. This process includes reading of all cross-sectional-images. Since reference evaluation is time critical, a fast, easy to handle and safe data transfer is important. In addition, immediate and constant access to all the data has to be guaranteed in case of queries and for regulatory reasons. To meet the mentioned requirements the EuroNet Paediatric Hodgkin Data Network (funded by the European Union - Project Number: 2007108) was established between 2008 and 2011. A respective tailored data protection plan was formulated. The aim of this article is to describe the networks' mode of operation and the advantages for multi-centre trials that include centralized image review.
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Affiliation(s)
- L Kurch
- Department of Nuclear Medicine, University Hospital of Leipzig, Germany
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Lonsdale MN, Bardiès M, Boellaard R, Christofides S, Flux G, Lassmann M, Sattler B, Del Guerra A. EFOMP and EANM: joint recommendations for a curriculum for the education and training of physicists in nuclear medicine. Eur J Nucl Med Mol Imaging 2013; 40:645-8. [PMID: 23397512 DOI: 10.1007/s00259-013-2349-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Schäfer JP, Wulff A, Schäfer FK, Siggelkow M, Groß J, Sattler B, Jansen O, Trentmann J. Perkutane endovaskuläre Prothesenimplantation bei akuter traumatischer Transsektion der thorakalen Aorta. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346500] [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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Pokorny S, Hettich H, Bähr T, Dai HD, Marczynski-Bühlow M, Sattler B, Cremer J, Lutter G. Transapical mitral valved stent implantation: Computed tomographic comparison. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Schaefer PJ, Jahnke T, Müller-Hülsbeck S, Wulff AM, Sattler B, Schmidt M, Siggelkow M, Schaefer FKW. Outcome of immediate interventions in acute dysfunctional hemodialysis fistulas. ROFO-FORTSCHR RONTG 2012; 185:228-34. [PMID: 23229322 DOI: 10.1055/s-0032-1330274] [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: 10/27/2022]
Abstract
PURPOSE To analyze the efficacy of interventions in acute dysfunctional hemodialysis fistulas, if intervention is performed immediately as recommended by European Best Practice Guidelines for Hemodialysis. MATERIALS AND METHODS Over 3 years, all (n = 280) patients with an acute dysfunctional hemodialysis fistula were immediately referred to angiography, irrespective of the time of day. Angiography and, if possible, interventional revision (n = 241) were performed. Three groups of interest were established: interventionalist's experience (high/low), time of day (routine hours: 7 am-4 pm/emergency hours: 4 pm-7 am), lesion type (stenosis/fibrosclerotic occlusion/thrombotic occlusion/combined stenosis+thrombotic occlusion). For statistical analysis corresponding success rates, chi-square tests (p < 0.025) and logistic regression analysis (p < 0.05) were calculated. RESULTS The total success rate was 62 % (149/241). The success rates were: interventionalist experience high/low 71 % (79/111)/54 % (70/130), p = 0.022; time of day routine/emergency hours 68 % (93/136)/53 % (56/105), p = 0.017; lesion type stenosis/fibrosclerotic occlusion/thrombotic occlusion/combined stenosis+occlusion 82 % (94/104)/39 % (13/33)/18 % (6/33)/59 % (36/61), p < 0.001. Relevant variables due to logistic regression analysis were high experience and the lesion types stenosis and combined stenosis+occlusion with odds ratios 2.300 (p = 0.012), 12.053 (p < 0.001), 3.189 (p = 0.003). CONCLUSION Unrestricted implementation of immediate interventions in acute dysfunctional hemodialysis fistulas requires permanent availability of experienced interventionalists. The lesion types fibrosclerotic occlusion and thrombotic occlusion offer poor success rates for interventional revision.
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Affiliation(s)
- P J Schaefer
- Diagnostic Radiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel.
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Pokorny S, Dai H, Sattler B, Hettich H, Bähr T, Lutter G, Heller M. Transapical mitral valved stent implantation: Computertomographic studies. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1329785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sattler B, Stöhring C, Fabel M, Burbaum B, Langer C, Heller M, Bolte H. Native Kardio-CT zur TAVI Planung - eine zuverlässige Alternative? ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Thorwarth D, Beyer T, Boellaard R, de Ruysscher D, Grgic A, Lee JA, Pietrzyk U, Sattler B, Schaefer A, van Elmpt W, Vogel W, Oyen WJG, Nestle U. Integration of FDG-PET/CT into external beam radiation therapy planning: technical aspects and recommendations on methodological approaches. Nuklearmedizin 2012; 51:140-53. [PMID: 22473130 DOI: 10.3413/nukmed-0455-11-12] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 03/19/2012] [Indexed: 12/20/2022]
Abstract
UNLABELLED This work addresses the clinical adoption of FDG-PET/CT for image-guided radiation therapy planning (RTP). As such, important technical and methodological aspects of PET/CT-based RTP are reviewed and practical recommendations are given for routine patient management and clinical studies. First, recent developments in PET/CT hardware that are relevant to RTP are reviewed in the context of quality control and system calibration procedures that are mandatory for a reproducible adoption of PET/CT in RTP. Second, recommendations are provided on image acquisition and reconstruction to support the standardization of imaging protocols. A major prerequisite for routine RTP is a complete and secure data transfer to the actual planning system. Third, state-of-the-art tools for image fusion and co-registration are discussed briefly in the context of PET/CT imaging pre- and post-RTP. This includes a brief review of state-of-the-art image contouring algorithms relevant to PET/CT-guided RTP. Finally, practical aspects of clinical workflow and patient management, such as patient setup and requirements for staff training are emphasized. PET/CT-guided RTP mandates attention to logistical aspects, patient set-up and acquisition parameters as well as an in-depth appreciation of quality control and protocol standardization. CONCLUSION Upon fulfilling the requirements to perform PET/CT for RTP, a new dimension of molecular imaging can be added to traditional morphological imaging. As a consequence, PET/CT imaging will support improved RTP and better patient care. This document serves as a guidance on practical and clinically validated instructions that are deemed useful to the staff involved in PET/CT-guided RTP.
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Affiliation(s)
- D Thorwarth
- University Hospital for Radiation Oncology, Section for Biomedical Physics, Eberhard-Karls University Tübingen, Germany.
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Sattler B, Stöhring C, Fabel M, Langer C, Heller M, Bolte H. TAVI Evaluation mittels nativer Kardio-CT bei Niereninsuffizienz. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0031-1300882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Tieber A, Lettner H, Bossew P, Hubmer A, Sattler B, Hofmann W. Accumulation of anthropogenic radionuclides in cryoconites on Alpine glaciers. J Environ Radioact 2009; 100:590-598. [PMID: 19450909 DOI: 10.1016/j.jenvrad.2009.04.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 04/08/2009] [Accepted: 04/08/2009] [Indexed: 05/27/2023]
Abstract
Cryoconites are airborne sediments which accumulate on the surface of glaciers. In samples of cryoconites a temperate Austrian glacier high activity concentrations of anthropogenic radionuclides were found, which stem from global and Chernobyl fallouts. Radionuclides identified were (137)Cs, (134)Cs, (238)Pu, (239+240)Pu, (90)Sr, (241)Am, (60)Co, (154)Eu, (207)Bi, and (125)Sb. Given the approximately known isotopic ratios, Cs and Pu can be separated into the contributions of either source of origin. Published (137)Cs/(134)Cs and (239+240)Pu/(238)Pu ratios were used for the discrimination of the Dachstein-glacier cryoconites according to their origin from global or Chernobyl fallout. Two different groups of cryoconites were identified, an older population dominated by nuclear weapons fallout and a younger one with predominant Chernobyl fallout. With those data a simple model was formulated to demonstrate the transition and mixing of these two populations on the glacier surface.
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Affiliation(s)
- A Tieber
- Division of Physics and Biophysics, University of Salzburg, Department of Materials Engineering and Physiks, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria.
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Leidig-Bruckner G, Cichorowski G, Sattler B. MIBI-scintigraphy of thyroid nodules – risk of malignancy. Exp Clin Endocrinol Diabetes 2007. [DOI: 10.1055/s-2007-972512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Foja C, Sattler B, Kluge R, Orda C. Therapie des malignen Melanoms der Bindehaut. Klin Monbl Augenheilkd 2006. [DOI: 10.1055/s-2006-958738] [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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Leister I, Sydow J, Stojanovic T, Füzesi L, Sattler B, Heuser M, Becker H, Markus PM. Impact of vasoactive intestinal polypeptide and gastrin-releasing peptide on small bowel microcirculation and mucosal injury after hepatic ischemia/reperfusion in rats. Int J Colorectal Dis 2005; 20:42-8. [PMID: 15602648 DOI: 10.1007/s00384-004-0610-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/06/2004] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS Alterations in microvascular perfusion of the intestine after hepatic ischemia/reperfusion have been suggested as an important cause of postoperative septic complications. We therefore investigated small bowel microcirculation and mucosal injury after liver ischemia/reperfusion in a rat model. Furthermore, we analyzed the effects of the regulatory peptides vasoactive intestinal polypeptide and gastrin-releasing peptide for their splanchnic vasoactivity. METHODS Hepatic ischemia was induced by clamping of the left hepatic artery and vein for 40 min, followed by 60 min of reperfusion. The control group was treated similarly, but without clamping of the liver vessels. Ten minutes after clamping of the hepatic vessels, vasoactive intestinal polypeptide or gastrin-releasing peptide, respectively, were continuously infused intravenously in the experimental groups. Small bowel microcirculation and mucosal injury were assessed using intravital microscopy and the Chiu-score, respectively. RESULTS The functional capillary density of the small intestine following ischemia and reperfusion of the left hepatic lobe significantly decreased compared to normal controls in both the mucosa and the smooth intestinal muscle. Red blood cell velocity decreased, whereas leukocyte-endothelium adherence, stasis index and the mucosal injury score increased. Administration of vasoactive intestinal polypeptide resulted in an increase of functional capillary density in the mucosa and of the red blood cell velocity and a decrease in the stasis index. The mucosal injury score was significantly higher in reperfused animals without treatment. The application of gastrin-releasing peptide resulted in an isolated increase of the red blood cell velocity. Leukocyte adherences could not be altered by the regulatory peptides. CONCLUSION We conclude that hepatic ischemia/reperfusion injury leads to significant alterations of small bowel microcirculation and mucosal injury. Vasoactive intestinal polypeptide and gastrin-releasing peptide attenuate the damage in a different manner.
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Affiliation(s)
- Ingo Leister
- Department of General Surgery, Georg August University, Robert-Koch-Strasse 40, 37099 Göttingen, Germany.
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Braun F, Hosseini M, Wieland E, Sattler B, Laabs S, Lorf T, Müller AR, Fändrich F, Kremer B, Ringe B. Expression of E-selectin and its transcripts during intestinal ischemia-reperfusion injury in pigs. Transplant Proc 2004; 36:265-6. [PMID: 15050129 DOI: 10.1016/j.transproceed.2004.01.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 01/19/2023]
Abstract
BACKGROUND Ischemia-reperfusion injury (IRI) can result in severe organ dys- or nonfunction. Interaction of leukocytes and endothelial cells mediated by E-selectin appears to be a key step for disturbed microcirculation. Therefore we studied gene and protein expression as well as localization of E-selectin during intestinal IRI. METHODS Intestinal tissue samples were obtained from extracorporeal perfused intestines (cold ischemia time [CIT] 2 or 20 hours, each n = 5) and additionally in intestinal transplanted pigs (CIT 2 or 20 hours, each n = 1). Mucosal damage was graded according to the Chiu classification. E-selectin mRNA was determined by PCR and quantitative RT-PCR. Localization of E-selectin mRNA was performed by in situ hybridization and of the protein by immunohistochemistry. RESULTS Histologically, mucosal damage occurred during reperfusion and was earlier and more severe after 20 hours of CIT. E-selectin mRNA expression was detected by PCR already after laparotomy and was elevated after reperfusion. Interestingly, mRNA expression was already increased after 20 hours of CIT. E-selectin mRNA was localized to the luminal surface of muscular, submucosal, and mucosal endothelial cells and the protein was detected on submucosal arterial endothelium as early as 2 hours after reperfusion. CONCLUSION Prolongation of CIT results in more severe mucosal damage during reperfusion, which is associated with protein expression of E-selection that might be used as a marker for activated endothelial cells. Increased E-selectin mRNA at end of 20 hours of CIT might indicate a preactivated state of endothelial cells potentially triggered by bacterial translocation or products.
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Affiliation(s)
- F Braun
- Klinik für Allgemeine Chirurgie und Thoraxchirurgie, Universität Schleswig-Holstein, Campus Kiel, Kiel, Germany
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Braun F, Hosseini M, Wieland E, Sattler B, Müller AR, Fändrich F, Kremer B, Ringe B. Kinetics and localization of interleukin-2, interleukin-6, heat shock protein 70, and interferon gamma during intestinal-rerfusion injury. Transplant Proc 2004; 36:267-9. [PMID: 15050130 DOI: 10.1016/j.transproceed.2004.01.082] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 01/09/2023]
Abstract
BACKGROUND Intestinal ischemia-reperfusion injury (IRI) represents an exaggerated inflammatory cascade with a complex pathophysiology. IL-2, IL-6, HSP70, and INF-gamma are mediators of the inflammatory process. Therefore, we investigated their kinetics and localization during intestinal IRI. METHODS Pig intestinal specimens were obtained during cold preservation (cold ischemia time 2 hours) and extracorporeal perfusion. Mucosal damage was graded according to the Chiu classification. MRNA expression was determined by Northern blot (IL-2, IL-6, IFN-gamma) or by quantitative RT-PCR (IL-6, HSP70) and localized by in situ hybridization. RESULTS Histologically, mucosal damage occurred during reperfusion. Expression of IL-2 mRNA was up-regulated after HTK perfusion and was highest at the start and 7 hours after reperfusion. Expression of IL-6 mRNA increased at 2 hours after reperfusion and HSP70 at 3 hours after reperfusion. IFN-gamma mRNA was expressed after HTK perfusion, with expression of this cytokine increasing to 1 hour after the start of reperfusion, and decreasing thereafter. IL-2 mRNA was localized to endothelial cells (EC) and leukocytes and in close relation to ganglion cells (GC): IL-6 mRNA in EC, smooth muscle cells (SMC), and GC: HSP70 mRNA in EC and SMC; and IFN-gamma mRNA in leukocytes. CONCLUSION IL-2, IL-6, HSP70, and INF-gamma are parameters of early mRNA expression during intestinal IRI. EC, SMC, leukocytes, and GC have been identified as sources of transcripts that might afford potential targets for intervention strategies to attenuate IRI.
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Affiliation(s)
- F Braun
- Klinik für Allgemeine Chirurgie und Thoraxchirurgie, Universität Schleswig-Holstein, Campus Kiel, Kiel, Germany
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Gunawan B, Schäfer KL, Sattler B, Lorf T, Dockhorn-Dworniczak B, Ringe B, Füzesi L. Undifferentiated small cell hepatoblastoma with a chromosomal translocation t(22;22)(q11;q13). Histopathology 2002; 40:485-7. [PMID: 12010372 DOI: 10.1046/j.1365-2559.2002.t01-2-01390.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Fuller TF, Sattler B, Binder L, Vetterlein F, Ringe B, Lorf T. Reduction of severe ischemia/reperfusion injury in rat kidney grafts by a soluble P-selectin glycoprotein ligand. Transplantation 2001; 72:216-22. [PMID: 11477341 DOI: 10.1097/00007890-200107270-00008] [Citation(s) in RCA: 37] [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] [Indexed: 01/12/2023]
Abstract
BACKGROUND Inflammatory leukocyte-endothelium interactions, mediated by selectins, contribute to renal ischemia/reperfusion (I/R) injury. We examined the influence of the soluble P-selectin glycoprotein ligand 1 (sPSGL) on early I/R-induced changes in a rat kidney transplantation model with long cold ischemia. METHODS After 24 hr of cold storage, syngeneic kidneys were grafted into bilaterally nephrectomized rats. Before transplantation, recipients received either 1 mg/kg of sPSGL or vehicle (n=8 per group). Six hours after reperfusion, grafts were removed for light microscopy and immunohistochemistry. Capillary blood flow was measured under a fluorescence microscope by using the concentric-circles method. RESULTS A greater proportion, 74.7+/-7.2% (sPSGL) vs. 28+/-7.4% (controls), of all dye-labeled outer medullary capillaries appeared in the 12-microm radius (P<0.01), indicating dense blood flow, whereas 7.6+/-2.9% vs. 43.3+/-9.7%, respectively, appeared in the 60-microm radius (P<0.05), indicating rarefied blood flow. In the sPSGL-treated group, the extent of severe tubular damage within the inner stripe of the outer medulla was lower compared with controls (37.5+/-8.3% vs. 78.4+/-3.5%, P<0.01). Outer medullary heat shock protein 72 expression was 14.5+/-1.6% in the sPSGL-treated group compared with 9.6+/-1.4% in controls (P<0.05). The number of infiltrating polymorphonuclear leukocytes was similar in both groups. Treatment with sPSGL had no influence on the serum creatinine level. CONCLUSIONS Our data suggest that impairment of outer medullary blood flow is crucial in I/R injury of kidney grafts with prolonged cold storage. Reduction of capillary blood flow perturbations by sPSGL protects tubular cells from severe structural damage. Blocking early selectin-mediated leukocyte adhesion may have therapeutic implications in improving the prognosis of renal transplants with severe I/R injury.
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Affiliation(s)
- T F Fuller
- Klinik für Transplantationschirurgie, Abteilung Klinische Chemie, Zentrum Pathologie, Georg-August-Universität Göttingen, Germany
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Fleckenstein G, Sattler B, Hinney B, Wuttke W, Osmers R, Emons G. Androblastoma of the ovary: clinical, diagnostic and histopathologic features. Onkologie 2001; 24:286-91. [PMID: 11455224 DOI: 10.1159/000055094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Androblastomas of Sertoli-Leydig cell tumors of the ovaries are classified into the group of sex cord stromal tumors and represent an extremely rare form of tumor (0.2% of all ovarian tumors) in women. Their malignant potential is lower than that of epithelial ovarian cancer. They cause signs of virilization, although these are not obligatory. In many cases secondary amenorrhea is the only symptom of the disease. This leads to an intensive search for the source of the disorder. Frequently only the elevated production of androgens gives a preoperative clue to the tumor type. The recommendation to include the measurement of androgen levels in the routine diagnosis of secondary amenorrhea must therefore be endorsed. The tumors are usually sonographically identifiable; in differential diagnosis, hyperandrogenemia of other origins (e.g., Cushing's disease, adrenal hyperplasia, pituitary adenoma, other causes of ovarian and adrenal androgen hypersecretion, intersexuality, medically induced androgenization) have to be ruled out. In view of the good prognosis, the therapy of choice consists simply in adnexectomy of the affected side. With regular measurement of serum androgen levels an effective control of the course of the disorder is possible. A conclusive pathological diagnosis is difficult as heterologous tumors and mixed tumors exist and, furthermore, other tumor types are capable of imitating Sertoli-Leydig cell tumors.
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Affiliation(s)
- G Fleckenstein
- Abteilung Gynäkologie und Geburtshilfe, Universitäts-Frauenklinik Göttingen, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany.
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Battin TJ, Wille A, Sattler B, Psenner R. Phylogenetic and functional heterogeneity of sediment biofilms along environmental gradients in a glacial stream. Appl Environ Microbiol 2001; 67:799-807. [PMID: 11157246 PMCID: PMC92650 DOI: 10.1128/aem.67.2.799-807.2001] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.0] [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: 11/20/2022] Open
Abstract
We used in situ hybridization with fluorescently labeled rRNA-targeted oligonucleotide probes concurrently with measurements of bacterial carbon production, biomass, and extracellular polymeric substances (EPS) to describe the bacterial community in sediments along a glacial stream. The abundance of sediment-associated Archaea, as detected with the ARCH915 probe, decreased downstream of the glacier snout, and a major storm increased their relative abundance by a factor of 5.5 to 7.9. Bacteria of the Cytophaga-Flavobacterium group were also sixfold to eightfold more abundant in the storm aftermath. Furthermore, elevated numbers of Archaea and members of the Cytophaga-Flavobacterium group characterized the phylogenetic composition of the supraglacial ice community. We postulate that glacial meltwaters constitute a possible source of allochthonous bacteria to the stream biofilms. Although stream water temperature increased dramatically from the glacier snout along the stream (3.5 km), sediment chlorophyll a was the best predictor for bacterial carbon production and specific growth rates along the stream. Concomitant with an increase in sediment chlorophyll a, the EPS carbohydrate-to-bacterial-cell ratio declined 11- to 15-fold along the stream prior to the storm, which is indicative of a larger biofilm matrix in upstream reaches. We assume that a larger biofilm matrix is required to assure prolonged transient storage and enzymatic processing of allochthonous macromolecules, which are likely the major substrate for microbial heterotrophs. Bacteria of the Cytophaga-Flavobacterium cluster, which are well known to degrade complex macromolecules, were most abundant in these stream reaches. Downstream, higher algal biomass continuously supplies heterotrophs with easily available exudates, therefore making a larger matrix unnecessary. As a result, bacterial carbon production and specific growth rates were higher in downstream reaches.
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Affiliation(s)
- T J Battin
- Institute of Ecology and Conservation Biology, University of Vienna, A-1090 Vienna, Austria.
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Braun F, Lorf T, Schütz E, Canelo R, Hanack U, Döpkens K, Sattler B, Grupp C, Ringe B. Primary tacrolimus immunosuppression in kidney recipients considered "higher immunological risk". Transplant Proc 2000; 32:1688. [PMID: 11119893 DOI: 10.1016/s0041-1345(00)01414-7] [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: 11/30/2022]
Affiliation(s)
- F Braun
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany.
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Braun F, Lorf T, Schütz E, Canelo R, Hanack U, Döpkens K, Sattler B, Grupp C, Ringe B. Primary tacrolimus immunosuppression in kidney recipients considered "higher immunologic risk". Transplant Proc 2000; 32:2535. [PMID: 11120281 DOI: 10.1016/s0041-1345(00)01779-6] [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: 10/18/2022]
Affiliation(s)
- F Braun
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany
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35
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Abstract
Undifferentiated small-cell hepatoblastoma (HB) is a rare malignant tumor of childhood. The cell of origin is supposed to be a pluripotential, probably entodermal, stem-cell. Differential diagnosis of this type of HB is difficult among the group of small round and blue cell malignant tumors of children. The immunohistochemically determined coexpression of cytokeratin 8, 18, and 19 and of vimentin and actin, regularly in the absence of alpha-fetoprotein expression may be diagnostically helpful. We present the case of an undifferentiated small-cell HB of a 15-month-old girl with agenesis of the right kidney. As morphological peculiarity the tumor presented disseminated histiocytic giant cells.
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Affiliation(s)
- B Sattler
- Zentrum für Pathologie, Georg-August-Universität, Robert-Koch-Strasse 40, D-37075 Göttingen
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36
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Lorf T, Hanack U, Schwörer H, Sattler B, Ringe B. [Surgical treatment of cholangiocellular carcinoma and proximal bile duct tumors]. Zentralbl Chir 2000; 125:637-41. [PMID: 10960975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
According to its different location, clinical features, treatment modalities and prognosis, intrahepatic cholangiocarcinoma should be well differentiated from proximal bile duct carcinoma. There is no therapeutic measure with curative potential apart from surgical treatment. Partial or extended hepatectomy is the treatment of choice in cholangiocarcinoma. Thereby, hilar resection in combination with hepatectomy is increasingly performed in proximal bile duct carcinomas. In most centers liver transplantation is not considered as a therapeutic option for irresectable cholangiocarcinomas.
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Affiliation(s)
- T Lorf
- Klinik für Transplantationschirurgie, Georg-August-Universität Göttingen
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37
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Blaschke S, Grunewald W, Strutz F, Sattler B, Müller GA, Reuss-Borst M. Fulminant alveolar haemorrhage in a case of recurrent small vessel vasculitis after renal transplantation. Rheumatology (Oxford) 2000; 39:1042-4. [PMID: 10986314 DOI: 10.1093/rheumatology/39.9.1042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Strutz F, Zeisberg M, Hemmerlein B, Sattler B, Hummel K, Becker V, Müller GA. Basic fibroblast growth factor expression is increased in human renal fibrogenesis and may mediate autocrine fibroblast proliferation. Kidney Int 2000; 57:1521-38. [PMID: 10760088 DOI: 10.1046/j.1523-1755.2000.00997.x] [Citation(s) in RCA: 169] [Impact Index Per Article: 7.0] [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: 11/20/2022]
Abstract
BACKGROUND Interstitial fibroblasts play a critical role in renal fibrogenesis, and autocrine proliferation of these cells may account for continuous matrix synthesis. Basic fibroblast growth factor (FGF-2) is mitogenic for most cells and exerts intracrine, autocrine, and paracrine effects on epithelial and mesenchymal cells. The aims of the present studies were to localize and quantitate the expression of FGF-2 in normal and pathologic human kidneys and to study the in vitro effects of FGF-2 on proliferation, differentiation, and matrix production of isolated cortical kidney fibroblasts. METHODS FGF-2 protein expression was localized by immunofluoresence double labelings in normal and fibrotic human kidneys. Subsequently, interstitial FGF-2 labeling was determined semiquantitatively in 8 normal kidneys and 39 kidneys with variable degrees of interstitial fibrosis and was correlated with the morphometrically determined interstitial cortical volume. In addition, FGF-2 expression was quantitated by immunoblot analysis in three normal and six fibrotic kidneys. FGF-2 mRNA was localized by in situ hybridizations. Seven primary cortical fibroblast lines were established, and expression of FGF-2 and FGF receptor-1 (FGFR-1) were examined. The effects of FGF-2 on cell proliferation were determined by bromodeoxyuridine incorporation and cell counts, those on differentiation into myofibroblasts by staining for alpha-smooth muscle actin, and those on matrix synthesis by enzyme-linked immunosorbent assay for collagen type I and fibronectin. Finally, proliferative activity in vivo was evaluated by expression of MIB-1 (Ki-67 antigen). RESULTS In normal kidneys, FGF-2 expression was confined to glomerular, vascular, and a few tubular as well as interstitial fibroblast-like cells. The expression of FGF-2 protein was increased in human kidneys, with tubulointerstitial scarring correlating with the degree of interstitial fibrosis (r = 0.84, P < 0.01). Immunoblot analyses confirmed a significant increase in FGF-2 protein expression in kidneys with interstitial scarring. In situ hybridization studies demonstrated low-level detection of FGF-2 mRNA in normal kidneys. However, FGF-2 mRNA expression was robustly up-regulated in interstitial and tubular cells in end-stage kidneys, indicating that these cells are the source of excess FGF-2 protein. Primary cortical fibroblasts express FGF-2 and FGFR-1 in vitro. FGF-2 induced a robust growth response in these cells that could be blocked specifically by a neutralizing FGF-2 antibody. Interestingly, the addition of the neutralizing antibody alone did reduce basal proliferation up to 31.5%. In addition, FGF-2 induced expression of alpha-smooth muscle actin up to 1.6-fold, but no significant effect was observed on the synthesis of collagen type I and fibronectin. Finally, staining for MIB-1 revealed a good correlation of interstitial FGF-2 positivity with interstitial and tubular proliferative activity (r = 0.71, P < 0.01 for interstitial proliferation, N = 30). CONCLUSIONS Interstitial FGF-2 protein and mRNA expression correlate with interstitial scarring. FGF-2 is a strong mitogen for cortical kidney fibroblasts and may promote autocrine fibroblast growth. Expression of FGF-2 correlates with interstitial and tubular proliferation in vivo.
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Affiliation(s)
- F Strutz
- Department of Nephrology and Rheumatology, Georg-August-University Göttingen, Germany.
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39
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Abstract
We report on a 43-year-old man with a primary sarcoma of the liver. The patient was admitted to the hospital for evaluation of dyspnea, abdominal pain in the right upper quadrant, diarrhea, and fever. Physical examination revealed hepatomegaly. Increased laboratory values were found for gamma-GT, LDH, CA 125, and NSE, but not for aspartate and alanine aminotransferase. Computed tomography presented a tumor in the right lobe of the liver. Venous cavography revealed a caval tumor thrombus reaching up to the right atrium. Major liver resection combined with replacement of the vena cava inferior was proposed, but before operation the patient complained about shortness of breath. Spontaneous fragmentation of the tumor thrombus with consecutive embolization of the lungs was suspected. Despite lysis therapy the patient died because of right ventricular failure. Autopsy revealed a tumor measuring 8 cm in diameter, which was located in the right lobe of the liver and invaded the inferior vena cava. Because of multiple tumor aggregates seen in the left and right main pulmonary arteries acute tumor embolization of the lungs was regarded as cause of death. Histologically the tumor was composed of bizarre giant cells surrounded by irregular spindle cells. The positive immunoreactivity pattern of the tumor cells for vimentin, lysozym, and CD68 justified the diagnosis of a malignant fibrous histocytoma (MFH) of the liver.
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Affiliation(s)
- S Schweyer
- Abteilung Pathologie, Universitätsklinikum Göttingen
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40
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Reuss-Borst MA, Becker V, Sattler B, Grupp C, Müller GA. Clinical images: Wegener's granulomatosis presenting as Pancoast tumor. Arthritis Rheum 2000; 43:467. [PMID: 10693892] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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41
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Abstract
We report two brothers with mental retardation, lymphoedema of the limbs and facial anomalies. Hennekam et al. (Am J Med Genet 34:593-600; 1989) described four patients with identical signs and intestinal lymphangiectasia. To confirm the diagnosis of Hennekam syndrome we undertook a duodenal biopsy from the older brother which revealed intestinal lymphangiectasia. So far only one patient with Hennekam syndrome and cerebral abnormalities has been described. This patient presented with pachygyria in the parietal area. Cerebral MRI in our two cases revealed small subcortical hyperintensities in both patients and a large cystic lesion in the younger patient probably representing an old media infarction.
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Affiliation(s)
- P Huppke
- Abteilung Kinderheilkunde, Schwerpunkt Neuropädiatrie, Georg-August-Universität Göttingen, Germany.
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42
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Berner B, Schulz E, Wieneke U, Reuss-Borst MA, Sattler B, Müller GA. [Rapidly progressing renal insufficiency as the primary manifestation of systemic sarcoidosis]. Med Klin (Munich) 1999; 94:690-4. [PMID: 10641512 DOI: 10.1007/bf03044760] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
CASE REPORT We report the history of a 67-year-old patient who was admitted to hospital because of rapidly progressive renal insufficiency. The renal biopsy revealed granulomatous interstitial nephritis. The diagnosis of systemic sarcoidosis was confirmed by typical findings of bronchoalveolar lavage and of transbronchial, liver and bone marrow biopsy. Indications for sarcoidosis-related nephrocalcinosis/nephrolithiasis or glomerulonephritis were absent. Simultaneously a monoclonal gammopathy of unknown significance (MGUS) was diagnosed. While the patient having been uremic at the time of diagnosis, the administration of prednisolone effectively improved renal function. CONCLUSIONS As a rare manifestation of sarcoidosis granulomatous interstitial nephritis can cause rapidly progressive renal insufficiency, which can effectively be treated by steroids, if distinct interstitial fibrosis is absent.
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Affiliation(s)
- B Berner
- Zentrum Innere Medizin, Abteilung Nephrologie und Rheumatologie, Georg-August-Universität Göttingen
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43
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Abstract
Cholangiocarcinoma is a primary liver tumor arising from the small bile ducts within the liver. According to its different location, clinical features, frequency of metastases, treatment modalities and prognosis, intrahepatic cholangiocarcinoma should well be differentiated from proximal bile duct carcinoma. To date, there is no therapeutic measure with curative potential apart from surgical treatment. Partial hepatectomy is the treatment of choice. It is of overriding importance to achieve microscopically tumor-free margins. However, only few patients treated in an early stage have a prolonged recurrence-free survival or a chance for cure. Liver transplantation is not an alternative therapeutic option for unresectable cholangiocarcinoma, due to early tumor recurrence in almost all recipients. Liver transplantation has a place in preventing cholangiocarcinoma in primary sclerosing cholangitis, although the timing of replacement is still a matter of debate. Results of surgery need further improvement by adjuvant or neoadjuvant treatment protocols.
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Affiliation(s)
- U Hanack
- Klinik für Transplantationschirurgie, Georg-August-Universität Göttingen, Germany
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44
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Braun F, Quondamatteo F, Bothuri P, Hosseini M, Laabs S, Sattler B, Ringe B. Determination of intestinal alpha-glutathione S-transferase after ischemia-reperfusion injury. Acta Gastroenterol Belg 1999; 62:229-33. [PMID: 10427788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- F Braun
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany
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45
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Lorf T, Braun F, Rüchel R, Müller A, Sattler B, Ringe B. Systemic mycoses during prophylactical use of liposomal amphotericin B (Ambisome) after liver transplantation. Mycoses 1999; 42:47-53. [PMID: 10394848 DOI: 10.1046/j.1439-0507.1999.00266.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We investigated the prophylactical administration of liposomal amphotericin B (Ambisome) in the early phase after liver transplantation (LTx). Fifty-eight patients received Ambisome prophylactically after LTx. Ambisome (1 mg kg-1 day-1) was given intravenously for 7 days after LTx. Immunosuppressive prophylaxis was cyclosporin A (CsA) based in 11 patients. Forty-seven patients had a tacrolimus-based immunosuppressive regimen. CsA and tacrolimus dosages were adjusted to trough levels of 150-250 ng ml-1 (EMIT) and 5-15 ng ml-1 (MEIA II) respectively. Three patients died from sepsis due to Aspergillus fumigatus infection. Reasons for a fatal outcome were foudroyant Aspergillus pneumonia in a patient transplanted for fulminant hepatic failure on post-operative day (pod) 8; Aspergillus sepsis with severe endocardidtis in a patient with two retransplantations for graft non/dysfunction on pod 24; and disseminated aspergillosis due to Aspergillus fumigatus in a patient retransplanted for primary non-function (pod 19). All three patients underwent haemofiltration for renal failure. One patient with Candida albicans sepsis (pod 4) recovered under increased dosage of Ambisome (3 mg kg-1 per day). Ambisome (1 mg kg-1 per day) seems to be beneficial against systemic Candida infections. However, the onset of systemic Aspergillus infections could not be prevented. Obviously, higher Ambisome doses appear to be necessary against Aspergillus. We recommend the use of Ambisome (3 mg kg-1 per day) for patients with risk factors such as graft dys-/non-function, retransplantation, haemofiltration and complicated acute liver failure to prevent invasive aspergillosis.
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Affiliation(s)
- T Lorf
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany
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46
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Braun F, Hosseini M, Laabs S, Sattler B, Bothur P, Elias K, Ringe B. Kinetics of inflammatory parameters after intestinal ischemia reperfusion injury. Acta Gastroenterol Belg 1999; 62:226-8. [PMID: 10427787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- F Braun
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany
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47
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Lorf T, Hanack U, Sattler B, Canelo R, Ringe B. [Technique, risks and results of additional portal vein resection in surgical therapy of proximal bile duct carcinoma]. Langenbecks Arch Chir Suppl Kongressbd 1999; 115:1335-7. [PMID: 9931874] [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: 02/10/2023]
Abstract
The infiltration of the portal vein is not considered an absolute contraindication for resection therapy of proximal bile duct carcinomas. Portal vein resection and reconstruction may be performed without additional perioperative risk after hilar resection and hepatectomy. The resected hepatic vein is a suitable material for portal vein reconstruction. The median survival of patients with additional portal vein resection is comparable with patients without vascular infiltration in the same tumor stage.
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Affiliation(s)
- T Lorf
- Klinik für Transplantationschirurgie, Georg-August-Universität Göttingen
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48
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Affiliation(s)
- R Canelo
- Klinik für Transplantationschirurgie, Georg-August-Universität, Göttingen, Germany
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49
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Canelo R, Braun F, Sattler B, Ringe B. Sollte Spenderlebern mit ausgeprägter Steatose zur Transplantation verwendet werden? Visc Med 1999. [DOI: 10.1159/000012516] [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: 11/19/2022] Open
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50
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Braum F, Nolte W, Lorf T, Canelo R, Sattler B, Müller D, Vosshenrich R, Ramadori G, Ringe B. De-novo-Lebertumoren nach protokavalem Shunt bei Budd-Chiari-Syndrom. Visc Med 1999. [DOI: 10.1159/000012515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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