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Weinert P, Hochhaus J, Kesper L, Appel R, Hilgers S, Schmitz M, Schulte M, Hönig R, Kronast F, Valencia S, Kruskopf M, Chatterjee A, Berges U, Westphal C. Structural, chemical, and magnetic investigation of a graphene/cobalt/platinum multilayer system on silicon carbide. Nanotechnology 2024; 35:165702. [PMID: 38211321 DOI: 10.1088/1361-6528/ad1d7b] [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] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 01/11/2024] [Indexed: 01/13/2024]
Abstract
We investigate the magnetic interlayer coupling and domain structure of ultra-thin ferromagnetic (FM) cobalt (Co) layers embedded between a graphene (G) layer and a platinum (Pt) layer on a silicon carbide (SiC) substrate (G/Co/Pt on SiC). Experimentally, a combination of x-ray photoemission electron microscopy with x-ray magnetic circular dichroism has been carried out at the Co L-edge. Furthermore, structural and chemical properties of the system have been investigated using low energy electron diffraction (LEED) and x-ray photoelectron spectroscopy (XPS).In situLEED patterns revealed the crystalline structure of each layer within the system. Moreover, XPS confirmed the presence of quasi-freestanding graphene, the absence of cobalt silicide, and the appearance of two silicon carbide surface components due to Pt intercalation. Thus, the Pt-layer effectively functions as a diffusion barrier. The magnetic structure of the system was unaffected by the substrate's step structure. Furthermore, numerous vortices and anti-vortices were found in all samples, distributed all over the surfaces, indicating Dzyaloshinskii-Moriya interaction. Only regions with a locally increased Co-layer thickness showed no vortices. Moreover, unlike in similar systems, the magnetization was predominantly in-plane, so no perpendicular magnetic anisotropy was found.
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Affiliation(s)
- P Weinert
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Hochhaus
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - L Kesper
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - R Appel
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Hilgers
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Schmitz
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Schulte
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - R Hönig
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - F Kronast
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | - S Valencia
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | - M Kruskopf
- Physikalisch-Technische Bundesanstalt (PTB), D-38116 Braunschweig, Germany
| | - A Chatterjee
- Physikalisch-Technische Bundesanstalt (PTB), D-38116 Braunschweig, Germany
| | - U Berges
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
| | - C Westphal
- Fakultät Physik/DELTA, TU Dortmund University, D-44221 Dortmund, Germany
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Mackert GA, Harder M, Harhaus H, Schulte M, Trinler U, Jaeger S, Kneser U, Harhaus L, Wölfl C. Validation of a novel testing machine for the investigation of the biomechanical properties of lumbar vertebrae in an osteoporotic rat model. J Orthop Surg Res 2023; 18:263. [PMID: 37004118 PMCID: PMC10067285 DOI: 10.1186/s13018-023-03751-3] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 03/24/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND For the investigation of the biomechanical properties of bone, various testing devices have been described. However, only a limited number have been developed to test the vertebral body of small animals. The aim of this study was to develop and validate a new bone testing device, which investigates the different biomechanical properties in small-animal vertebrae as a whole, three-dimensional unit, respecting its anatomical structure. METHODS Thirty-five twelve-week-old female Sprague Dawley rats were utilized. Group 1 was composed of 17 rats with a normal bone metabolism without osteoporosis, while Group 2 consisted of 18 rats with manifest osteoporosis, 8 weeks after ovariectomy. The 5th lumbar vertebra of each animal was tested using the new bone testing device. This device has the ability to be adjusted to the slanted nature of each individual vertebral body and fix the vertebra in a natural position to allow for a non-dislocating axial force application. The device is designed to respect the anatomical three-dimensional shape of the vertebral body, thus avoiding the application of non-anatomic, non-physiological forces and thus preventing a distortion of the biomechanical testing results. The parameters investigated were stiffness, yield load, maximum load and failure load, and the results were compared to current literature values. RESULTS The conduction of the biomechanical bone testing of the vertebral bodies with the new device was conductible without any instances of dislocation of the vertebrae or machine malfunctions. Significant differences were found for stiffness, maximum load and failure load between groups, with a lower value in the osteoporotic rats in each parameter tested. The yield load was also lower in the osteoporotic group, however not significantly. The values achieved correlate with those in current literature. CONCLUSIONS This study demonstrates that the newly developed testing machine is easy to handle and produces valid data sets for testing biomechanical bone parameters of whole vertebral bodies in an established small animal model. Therefore, it can be utilized, also as reference data, to test different structural properties and changes in vertebral bone, for example, in different metabolic settings or under the influence of different pharmaceutical entities in further studies.
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Affiliation(s)
- G A Mackert
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Plastic Surgery of the University of Heidelberg, BG Trauma Center, Ludwigshafen, Germany.
| | - M Harder
- Department of Orthopedics and Trauma Surgery, GRN Clinic Weinheim, Weinheim, Germany
| | - H Harhaus
- Technical and Medical Devices Development and Invention Center, Remscheid, Germany
| | - M Schulte
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Plastic Surgery of the University of Heidelberg, BG Trauma Center, Ludwigshafen, Germany
| | - U Trinler
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Plastic Surgery of the University of Heidelberg, BG Trauma Center, Ludwigshafen, Germany
| | - S Jaeger
- Laboratory of Biomechanics and Implant Research, Department of Orthopedic Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - U Kneser
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Plastic Surgery of the University of Heidelberg, BG Trauma Center, Ludwigshafen, Germany
| | - L Harhaus
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Plastic Surgery of the University of Heidelberg, BG Trauma Center, Ludwigshafen, Germany
| | - C Wölfl
- Department of Orthopedics and Trauma Surgery, Marienhausklinikum Neuwied, Teaching Hospital of the Johannes Gutenberg-University, Mainz, Germany
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Farley KA, Stack KM, Shuster DL, Horgan BHN, Hurowitz JA, Tarnas JD, Simon JI, Sun VZ, Scheller EL, Moore KR, McLennan SM, Vasconcelos PM, Wiens RC, Treiman AH, Mayhew LE, Beyssac O, Kizovski TV, Tosca NJ, Williford KH, Crumpler LS, Beegle LW, Bell JF, Ehlmann BL, Liu Y, Maki JN, Schmidt ME, Allwood AC, Amundsen HEF, Bhartia R, Bosak T, Brown AJ, Clark BC, Cousin A, Forni O, Gabriel TSJ, Goreva Y, Gupta S, Hamran SE, Herd CDK, Hickman-Lewis K, Johnson JR, Kah LC, Kelemen PB, Kinch KB, Mandon L, Mangold N, Quantin-Nataf C, Rice MS, Russell PS, Sharma S, Siljeström S, Steele A, Sullivan R, Wadhwa M, Weiss BP, Williams AJ, Wogsland BV, Willis PA, Acosta-Maeda TA, Beck P, Benzerara K, Bernard S, Burton AS, Cardarelli EL, Chide B, Clavé E, Cloutis EA, Cohen BA, Czaja AD, Debaille V, Dehouck E, Fairén AG, Flannery DT, Fleron SZ, Fouchet T, Frydenvang J, Garczynski BJ, Gibbons EF, Hausrath EM, Hayes AG, Henneke J, Jørgensen JL, Kelly EM, Lasue J, Le Mouélic S, Madariaga JM, Maurice S, Merusi M, Meslin PY, Milkovich SM, Million CC, Moeller RC, Núñez JI, Ollila AM, Paar G, Paige DA, Pedersen DAK, Pilleri P, Pilorget C, Pinet PC, Rice JW, Royer C, Sautter V, Schulte M, Sephton MA, Sharma SK, Sholes SF, Spanovich N, St Clair M, Tate CD, Uckert K, VanBommel SJ, Yanchilina AG, Zorzano MP. Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars. Science 2022; 377:eabo2196. [PMID: 36007009 DOI: 10.1126/science.abo2196] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Perseverance rover landed in Jezero crater, Mars, to investigate ancient lake and river deposits. We report observations of the crater floor, below the crater's sedimentary delta, finding the floor consists of igneous rocks altered by water. The lowest exposed unit, informally named Séítah, is a coarsely crystalline olivine-rich rock, which accumulated at the base of a magma body. Fe-Mg carbonates along grain boundaries indicate reactions with CO2-rich water, under water-poor conditions. Overlying Séítah is a unit informally named Máaz, which we interpret as lava flows or the chemical complement to Séítah in a layered igneous body. Voids in these rocks contain sulfates and perchlorates, likely introduced by later near-surface brine evaporation. Core samples of these rocks were stored aboard Perseverance for potential return to Earth.
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Affiliation(s)
- K A Farley
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - K M Stack
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - D L Shuster
- Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA 94720, USA
| | - B H N Horgan
- Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - J A Hurowitz
- Department of Geosciences, Stony Brook University, Stony Brook, NY 11794, USA
| | - J D Tarnas
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - J I Simon
- Center for Isotope Cosmochemistry and Geochronology, Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Houston, TX 77058, USA
| | - V Z Sun
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - E L Scheller
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - K R Moore
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - S M McLennan
- Department of Geosciences, Stony Brook University, Stony Brook, NY 11794, USA
| | - P M Vasconcelos
- School of Earth and Environmental Sciences, University of Queensland, Brisbane, QLD 4072, Australia
| | - R C Wiens
- Planetary Exploration Team, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - A H Treiman
- Lunar and Planetary Institute, Universities Space Research Association, Houston, TX 77058, USA
| | - L E Mayhew
- Department of Geological Sciences, University of Colorado, Boulder, Boulder, CO 80309, USA
| | - O Beyssac
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | - T V Kizovski
- Department of Earth Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - N J Tosca
- Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK
| | - K H Williford
- Blue Marble Space Institute of Science, Seattle, WA 98104, USA
| | - L S Crumpler
- New Mexico Museum of Natural History and Science, Albuquerque, NM 8710, USA
| | - L W Beegle
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - J F Bell
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - B L Ehlmann
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - Y Liu
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - J N Maki
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - M E Schmidt
- Department of Earth Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - A C Allwood
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - H E F Amundsen
- Center for Space Sensors and Systems, University of Oslo, 2007 Kjeller, Norway
| | - R Bhartia
- Photon Systems Inc., Covina, CA 91725, USA
| | - T Bosak
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - A J Brown
- Plancius Research, Severna Park, MD 21146, USA
| | - B C Clark
- Space Science Institute, Boulder, CO 80301, USA
| | - A Cousin
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - O Forni
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - T S J Gabriel
- Astrogeology Science Center, US Geological Survey, Flagstaff, AZ 86001, USA
| | - Y Goreva
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - S Gupta
- Department of Earth Sciences and Engineering, Imperial College London, London SW7 2AZ, UK
| | - S-E Hamran
- Center for Space Sensors and Systems, University of Oslo, 2007 Kjeller, Norway
| | - C D K Herd
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada
| | - K Hickman-Lewis
- Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK.,Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, 40126 Bologna, Italy
| | - J R Johnson
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - L C Kah
- Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA
| | - P B Kelemen
- Department of Earth and Environmental Sciences, Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
| | - K B Kinch
- Niels Bohr Institute, University of Copenhagen, 1350 Copenhagen, Denmark
| | - L Mandon
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Centre National de la Recherche Scientifique, Sorbonne Université, Université Paris Diderot, 92195 Meudon, France
| | - N Mangold
- Laboratoire de Planétologie et Géosciences, Centre National de la Recherche Scientifique, Nantes Université, Université Angers, 44000 Nantes, France
| | - C Quantin-Nataf
- Laboratoire de Géologie de Lyon: Terre, Université de Lyon, Université Claude Bernard Lyon1, Ecole Normale Supérieure de Lyon, Université Jean Monnet Saint Etienne, Centre National de la Recherche Scientifique, 69622 Villeurbanne, France
| | - M S Rice
- Department of Geology, Western Washington University, Bellingham, WA 98225 USA
| | - P S Russell
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - S Sharma
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - S Siljeström
- Department of Methodology, Textiles and Medical Technology, Research Institutes of Sweden, 11486 Stockholm, Sweden
| | - A Steele
- Earth and Planetary Laboratory, Carnegie Science, Washington, DC 20015, USA
| | - R Sullivan
- Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY 14853, USA
| | - M Wadhwa
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - B P Weiss
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.,Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - A J Williams
- Department of Geological Sciences, University of Florida, Gainesville, FL 32611, USA
| | - B V Wogsland
- Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA
| | - P A Willis
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - T A Acosta-Maeda
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - P Beck
- Institut de Planétologie et Astrophysique de Grenoble, Centre National de la Recherche Scientifique, Université Grenoble Alpes, 38000 Grenoble, France
| | - K Benzerara
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | - S Bernard
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | - A S Burton
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - E L Cardarelli
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - B Chide
- Planetary Exploration Team, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - E Clavé
- Centre Lasers Intenses et Applications, Centre National de la Recherche Scientifique, Commissariat à l'Energie Atomique, Université de Bordeaux, 33400 Bordeaux, France
| | - E A Cloutis
- Centre for Terrestrial and Planetary Exploration, University of Winnipeg, Winnipeg, MB R3B 2E9, Canada
| | - B A Cohen
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - A D Czaja
- Department of Geology, University of Cincinnati, Cincinnati, OH 45221, USA
| | - V Debaille
- Laboratoire G-Time, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - E Dehouck
- Laboratoire de Géologie de Lyon: Terre, Université de Lyon, Université Claude Bernard Lyon1, Ecole Normale Supérieure de Lyon, Université Jean Monnet Saint Etienne, Centre National de la Recherche Scientifique, 69622 Villeurbanne, France
| | - A G Fairén
- Centro de Astrobiología, Consejo Superior de Investigaciones Científicas-Instituto Nacional de Técnica Aeroespacial, 28850 Madrid, Spain.,Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
| | - D T Flannery
- School of Earth and Atmospheric Sciences, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - S Z Fleron
- Department of Geosciences and Natural Resource Management, University of Copenhagen, 1350 Copenhagen, Denmark
| | - T Fouchet
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Centre National de la Recherche Scientifique, Sorbonne Université, Université Paris Diderot, 92195 Meudon, France
| | - J Frydenvang
- Globe Institute, University of Copenhagen, 1350 Copenhagen, Denmark
| | - B J Garczynski
- Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - E F Gibbons
- Department of Earth and Planetary Sciences, McGill University, Montreal, QC H3A 0E8, Canada
| | - E M Hausrath
- Department of Geoscience, University of Nevada, Las Vegas, Las Vegas, NV 89154, USA
| | - A G Hayes
- Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
| | - J Henneke
- National Space Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - J L Jørgensen
- National Space Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - E M Kelly
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - J Lasue
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - S Le Mouélic
- Laboratoire de Planétologie et Géosciences, Centre National de la Recherche Scientifique, Nantes Université, Université Angers, 44000 Nantes, France
| | - J M Madariaga
- Department of Analytical Chemistry, University of the Basque Country, 48940 Leioa, Spain
| | - S Maurice
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - M Merusi
- Niels Bohr Institute, University of Copenhagen, 1350 Copenhagen, Denmark
| | - P-Y Meslin
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - S M Milkovich
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | | | - R C Moeller
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - J I Núñez
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - A M Ollila
- Los Alamos National Laboratory, Los Alamos, NM 87545 USA
| | - G Paar
- Institute for Information and Communication Technologies, Joanneum Research, 8010 Graz, Austria
| | - D A Paige
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - D A K Pedersen
- National Space Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - P Pilleri
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - C Pilorget
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, 91405 Orsay, France.,Institut Universitaire de France, Paris, France
| | - P C Pinet
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse 3 Paul Sabatier, Centre National de la Recherche Scientifique, Centre National d'Etude Spatiale, 31400 Toulouse, France
| | - J W Rice
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - C Royer
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | - V Sautter
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | - M Schulte
- Mars Exploration Program, Planetary Science Division, NASA Headquarters, Washington, DC 20546, USA
| | - M A Sephton
- Department of Earth Sciences and Engineering, Imperial College London, London SW7 2AZ, UK
| | - S K Sharma
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - S F Sholes
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - N Spanovich
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - M St Clair
- Million Concepts, Louisville, KY 40204, USA
| | - C D Tate
- Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
| | - K Uckert
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - S J VanBommel
- McDonnell Center for the Space Sciences and Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO 63130, USA
| | | | - M-P Zorzano
- Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
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4
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Ertl M, Schulte M, Dieterich M. EEG microstate architecture does not change during passive whole-body accelerations. J Neurol 2020; 267:76-78. [PMID: 32468117 PMCID: PMC7718187 DOI: 10.1007/s00415-020-09794-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/10/2020] [Accepted: 03/13/2020] [Indexed: 11/24/2022]
Affiliation(s)
- M Ertl
- Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistraße 15, 81377, Munich, Germany. .,Department of Psychology, University of Bern, Bern, Switzerland.
| | - M Schulte
- Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistraße 15, 81377, Munich, Germany
| | - M Dieterich
- Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistraße 15, 81377, Munich, Germany.,German Center for Vertigo and Balance Disorders (DSGZ), Ludwig-Maximilians-Universität München, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
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5
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Meysing A, Schulte M, Youngren W, Hamilton N. 0801 Sleep, Nightmares, and the Maintenance of Posttrauma Symptoms. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Most individuals will experience at least one traumatic event in their lifetime. Although most individuals who experience a trauma will exhibit some posttrauma symptoms, only a small subset will experience long-lasting symptoms. In fact, most research suggests that posttrauma symptoms will gradually reduce over time. However, some individuals can exhibit posttrauma symptoms for an extended period of time. Although research has demonstrated that poor overall sleep quality may explain why some people have trouble gradually recovering from posttrauma symptoms, research has yet to examine specific aspects of sleep that can impair the gradual remission of posttrauma symptoms. This study examined how individual facets of sleep quality (such as nightmares and sleep duration) impact posttrauma symptoms over time.
Methods
944 college students completed an online survey battery that included measures of traumatic experiences, time since trauma (TST), posttrauma symptoms, sleep quality, and the presence of nightmares. Regression analyses were used to examine the interaction of sleep quality sub-facets and time since trauma on posttrauma nightmares (PNMs).
Results
Out of 944 participants, 637 (67%) reported at least one trauma. Of those students, time since trauma (TST) and all other sleep variables significantly predicted posttrauma symptoms (p < 0.05). However, the only significant interaction was nightmares and TST (p < 0.01) where individuals who experienced PNMs had significantly (p < 0.01) higher posttrauma symptom intercept (48.19) than individuals who did not experience PNMs (31.19). Furthermore, individuals who experienced PNMs demonstrated statistically significant flatter slopes than those without nightmares (p < 0.01).
Conclusion
The results reveal that time since trauma predicts a decrease in posttrauma symptoms, whereas nightmares impede this symptom reduction. Interestingly, the interaction finding suggests that nightmares play a critical role in initial symptom expression and recovery. These results demonstrate the importance of identifying and treating nightmares immediately following a trauma.
Support
“none”
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Zarantonello G, Hahn H, Morgner J, Schulte M, Bautista-Salvador A, Werner RF, Hammerer K, Ospelkaus C. Robust and Resource-Efficient Microwave Near-Field Entangling ^{9}Be^{+} Gate. Phys Rev Lett 2019; 123:260503. [PMID: 31951443 DOI: 10.1103/physrevlett.123.260503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Indexed: 06/10/2023]
Abstract
Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental source of decoherence. However, microwave two-qubit gates are still slower than laser-induced gates and hence more sensitive to fluctuations and noise of the motional mode frequency. We propose and implement amplitude-shaped gate drives to obtain resilience to such frequency changes without increasing the pulse energy per gate operation. We demonstrate the resilience by noise injection during a two-qubit entangling gate with ^{9}Be^{+} ion qubits. In the absence of injected noise, amplitude modulation gives an operation infidelity in the 10^{-3} range.
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Affiliation(s)
- G Zarantonello
- Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - H Hahn
- Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - J Morgner
- Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - M Schulte
- Institut für Theoretische Physik und Institut für Gravitationsphysik (Albert-Einstein-Institut), Leibniz Universität Hannover, Appelstrasse 2, 30167 Hannover, Germany
| | - A Bautista-Salvador
- Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
- Laboratorium für Nano- und Quantenengineering, Leibniz Universität Hannover, Schneiderberg 39, 30167 Hannover, Germany
| | - R F Werner
- Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstrasse 2, 30167 Hannover, Germany
| | - K Hammerer
- Institut für Theoretische Physik und Institut für Gravitationsphysik (Albert-Einstein-Institut), Leibniz Universität Hannover, Appelstrasse 2, 30167 Hannover, Germany
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
- Laboratorium für Nano- und Quantenengineering, Leibniz Universität Hannover, Schneiderberg 39, 30167 Hannover, Germany
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Strine AC, VanderBrink BA, May T, Riazzi AC, Schulte M, Noh PH, DeFoor WR, Minevich E, Sheldon CA, Reddy PP. Impact of body mass index on 30-day postoperative morbidity in pediatric and adolescent patients undergoing continent urinary tract reconstruction. J Pediatr Urol 2019; 15:521.e1-521.e7. [PMID: 31301974 DOI: 10.1016/j.jpurol.2019.06.009] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 05/06/2019] [Accepted: 06/14/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Obesity has been thought to increase the risk of complications and need for additional resources with surgery, but only a limited amount of evidence is available in the pediatric population. OBJECTIVE The objectives were to describe the weight status of pediatric and adolescent patients undergoing a continent urinary tract reconstruction and to determine the association between obesity and 30-day postoperative morbidity. STUDY DESIGN A retrospective cohort study was performed for pediatric and adolescent patients aged up to 20 years who underwent a continent urinary tract reconstruction between January 2010 and November 2016. Weight status was stratified by the body mass index (BMI) for age z-scores as follows: underweight (<5th percentile), normal (5th to <85th percentiles), overweight (85th to <95th percentiles), and obese (≥95th percentile). Primary outcomes included the duration of intensive care and hospitalization as well as re-admissions and complications within 30 days. RESULTS A total of 182 continent reconstructions were identified during the study period. Demographic and peri-operative data are provided in the Table. Weight status was not associated with any primary outcomes on univariate or multivariate analysis. There was also no association in an analysis between the non-overweight or non-obese group (BMI for age z-score <85th) and overweight or obese group (BMI for age z-score ≥85th percentiles); a subgroup analysis between patients with and without myelomeningocele; or a subgroup analysis for wound, infectious, or high-grade (Clavien-Dindo grades III or higher) complications. DISCUSSION Obesity has been consistently associated with an increased risk of surgical site infections and wound complications after a wide variety of surgeries in adults. The results from the present study conflict with those of the few available studies in the pediatric population. The high-risk nature of the present cohort may have mitigated any effect of obesity on 30-day postoperative morbidity. The limitations of the present study include its retrospective design at a single center and the potential misclassification of weight status with the BMI. CONCLUSIONS Almost 30% of pediatric and adolescent patients undergoing a continent urinary tract reconstruction were overweight or obese. Obesity as determined by the BMI was not associated with 30-day postoperative morbidity.
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Affiliation(s)
- A C Strine
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA.
| | - B A VanderBrink
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - T May
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - A C Riazzi
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - M Schulte
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - P H Noh
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - W R DeFoor
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - E Minevich
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - C A Sheldon
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - P P Reddy
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
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Tansaz S, Schulte M, Kneser U, Mohn D, Stark W, Roether J, Cicha I, Boccaccini A. Soy protein isolate/bioactive glass composite membranes: Processing and properties. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Bernabé KJ, Nokoff NJ, Galan D, Felsen D, Aston CE, Austin P, Baskin L, Chan YM, Cheng EY, Diamond DA, Ellens R, Fried A, Greenfield S, Kolon T, Kropp B, Lakshmanan Y, Meyer S, Meyer T, Delozier AM, Mullins LL, Palmer B, Paradis A, Reddy P, Reyes KJS, Schulte M, Swartz JM, Yerkes E, Wolfe-Christensen C, Wisniewski AB, Poppas DP. Preliminary report: Surgical outcomes following genitoplasty in children with moderate to severe genital atypia. J Pediatr Urol 2018; 14:157.e1-157.e8. [PMID: 29398588 PMCID: PMC5970022 DOI: 10.1016/j.jpurol.2017.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 11/23/2017] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Prior studies of outcomes following genitoplasty have reported high rates of surgical complications among children with atypical genitalia. Few studies have prospectively assessed outcomes after contemporary surgical approaches. OBJECTIVE The current study reported the occurrence of early postoperative complications and of cosmetic outcomes (as rated by surgeons and parents) at 12 months following contemporary genitoplasty procedures in children born with atypical genitalia. STUDY DESIGN This 11-site, prospective study included children aged ≤2 years, with Prader 3-5 or Quigley 3-6 external genitalia, with no prior genitoplasty and non-urogenital malformations at the time of enrollment. Genital appearance was rated on a 4-point Likert scale. Paired t-tests evaluated differences in cosmesis ratings. RESULTS Out of 27 children, 10 were 46,XY patients with the following diagnoses: gonadal dysgenesis, PAIS or testosterone biosynthetic defect, severe hypospadias and microphallus, who were reared male. Sixteen 46,XX congenital adrenal hyperplasia patients were reared female and one child with sex chromosome mosaicism was reared male. Eleven children had masculinizing genitoplasty for penoscrotal or perineal hypospadias (one-stage, three; two-stage, eight). Among one-stage surgeries, one child had meatal stenosis (minor) and one developed both urinary retention (minor) and urethrocutaneous fistula (major) (Summary Figure). Among two-stage surgeries, three children developed a major complication: penoscrotal fistula, glans dehiscence or urethral dehiscence. Among 16 children who had feminizing genitoplasty, vaginoplasty was performed in all, clitoroplasty in nine, external genitoplasty in 13, urethroplasty in four, perineoplasty in five, and total urogenital sinus mobilization in two. Two children had minor complications: one had a UTI, and one had both a mucosal skin tag and vaginal mucosal polyp. Two additional children developed a major complication: vaginal stenosis. Cosmesis scores revealed sustained improvements from 6 months post-genitoplasty, as previously reported, with all scores reported as good or satisfied. DISCUSSION In these preliminary data from a multi-site, observational study, parents and surgeons were equally satisfied with the cosmetic outcomes 12 months after genitoplasty. A small number of patients had major complications in both feminizing and masculinizing surgeries; two-stage hypospadias repair had the most major complications. Long-term follow-up of patients at post-puberty will provide a better assessment of outcomes in this population. CONCLUSION In this cohort of children with moderate to severe atypical genitalia, preliminary data on both surgical and cosmetic outcomes were presented. Findings from this study, and from following these children in long-term studies, will help guide practitioners in their discussions with families about surgical management.
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Affiliation(s)
- K J Bernabé
- The Comprehensive Center for Congenital Adrenal Hyperplasia, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, NY, USA
| | - N J Nokoff
- Children's Hospital Colorado, Aurora, CO, USA
| | - D Galan
- The Comprehensive Center for Congenital Adrenal Hyperplasia, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, NY, USA
| | - D Felsen
- The Comprehensive Center for Congenital Adrenal Hyperplasia, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, NY, USA
| | - C E Aston
- University of Oklahoma Health Sciences Center, Department of Pediatrics, Oklahoma City, OK, USA
| | - P Austin
- St. Louis Children's Hospital, St. Louis, Missouri, USA
| | - L Baskin
- University of California San Francisco, San Francisco, CA, USA
| | - Y-M Chan
- Children's Hospital Boston, Department of Urology, Boston, MA, USA
| | - E Y Cheng
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - D A Diamond
- Children's Hospital Boston, Department of Urology, Boston, MA, USA
| | - R Ellens
- Children's Hospital of Michigan, Detroit, MI, USA
| | - A Fried
- Women and Children's Hospital of Buffalo, Buffalo, NY, USA
| | - S Greenfield
- Women and Children's Hospital of Buffalo, Buffalo, NY, USA
| | - T Kolon
- Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - B Kropp
- Genitourinary Institute, Cook Children's Hospital, Fort Worth, TX, USA
| | - Y Lakshmanan
- Children's Hospital of Michigan, Detroit, MI, USA
| | - S Meyer
- Women and Children's Hospital of Buffalo, Buffalo, NY, USA
| | - T Meyer
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - A M Delozier
- Oklahoma State University, College of Arts and Sciences, Stillwater, OK, USA
| | - L L Mullins
- Oklahoma State University, College of Arts and Sciences, Stillwater, OK, USA
| | - B Palmer
- Genitourinary Institute, Cook Children's Hospital, Fort Worth, TX, USA
| | - A Paradis
- St. Louis Children's Hospital, St. Louis, Missouri, USA
| | - P Reddy
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - K J Scott Reyes
- Genitourinary Institute, Cook Children's Hospital, Fort Worth, TX, USA
| | - M Schulte
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - J M Swartz
- Children's Hospital Boston, Department of Urology, Boston, MA, USA
| | - E Yerkes
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - C Wolfe-Christensen
- Genitourinary Institute, Cook Children's Hospital, Fort Worth, TX, USA; Children's Hospital of Michigan, Detroit, MI, USA
| | - A B Wisniewski
- Genitourinary Institute, Cook Children's Hospital, Fort Worth, TX, USA
| | - D P Poppas
- The Comprehensive Center for Congenital Adrenal Hyperplasia, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, NY, USA.
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Schulte M, Hamsen U, Schildhauer TA, Ramczykowski T. Effective and rapid treatment of wound botulism, a case report. BMC Surg 2017; 17:103. [PMID: 29073888 PMCID: PMC5658925 DOI: 10.1186/s12893-017-0300-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/24/2017] [Indexed: 11/16/2022] Open
Abstract
Background The latest news shows several cases of contaminated heroin that is found in different parts all over Europe. This information can be helpful for the emergency doctors to find the correct diagnosis of wound botulism in patients who are intravenous drug users. Case presentation We describe a case of a 40-year-old man who presented to the emergency department in 2016. He suffered from mild dysarthria, diplopia, dysphagia and ptosis since two days. The CT-scan of the cerebrum and the liquor were without any pathological results. We found out that the patient is an intravenous drug user and the clinical examination showed an abscess in the left groin. So we treated him with the suspected diagnosis of wound botulism. In the emergency operation we split the abscess, made a radical debridement and complementary treated him with a high dose of penicillin g and two units of botulism antitoxin. The suspected diagnosis was confirmed a few days later by finding the Toxin B in the abscess and in the patient’s serum. In the following days the neurological symptoms decreased and the wound healing was without any complications. The patient left the hospital after nine days; the antibiotic therapy with penicillin g was continued for several days. In a following examination, 14 days after the patient’s discharge of the hospital, no further symptoms were found and the abscess was treated successfully without any problems. Conclusion Because wound botulism is a very rare disease it can be challenging to the attending physician. This case shows a fast treatment with full recovery of the patient without any further disabilities, which can be used for the future.
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Affiliation(s)
- M Schulte
- Chirurgische Universitäts- und Poliklinik, BG-Klinikum Bergmannsheil GmbH, Universitätsklinikum der Ruhr-Universität, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.
| | - U Hamsen
- Chirurgische Universitäts- und Poliklinik, BG-Klinikum Bergmannsheil GmbH, Universitätsklinikum der Ruhr-Universität, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - T A Schildhauer
- Chirurgische Universitäts- und Poliklinik, BG-Klinikum Bergmannsheil GmbH, Universitätsklinikum der Ruhr-Universität, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - T Ramczykowski
- Chirurgische Universitäts- und Poliklinik, BG-Klinikum Bergmannsheil GmbH, Universitätsklinikum der Ruhr-Universität, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
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Oberle M, Sixt M, Strube J, Schulte M, Uhlenbrock L. Target- oriented Process design for the Identification and Isolation of Natural Products using Thin-Layer and Preparative Chromatography. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Oberle
- Merck Life Science, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - M Sixt
- Technical University Clausthal, Institute for Separation and Process Technology, Leibnizstrasse 15, 38678 Clausthal-Zellerfeld, Germany
| | - J Strube
- Technical University Clausthal, Institute for Separation and Process Technology, Leibnizstrasse 15, 38678 Clausthal-Zellerfeld, Germany
| | - M Schulte
- Merck Life Science, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - L Uhlenbrock
- Technical University Clausthal, Institute for Separation and Process Technology, Leibnizstrasse 15, 38678 Clausthal-Zellerfeld, Germany
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Broughton D, Eskew A, Schulte M, Omurtag K, Jungheim E. Factors beyond insurance coverage that are associated with in vitro fertilization dropout. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Schulte M, Broughton D, Eskew A, Boots C, Ratts V, Keller S, Omurtag K, Jungheim E, Odem R, Cipolla K. Does endometrial mechanical stimulation (scratch test) improve pregnancy rates in in vitro fertilization cycles? A double blind randomized controlled trial. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.1072] [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: 11/26/2022]
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Strine AC, VanderBrink BA, Alam Z, Schulte M, Noh PH, DeFoor WR, Minevich E, Sheldon CA, Frischer JS, Reddy PP. Clinical and urodynamic outcomes in children with anorectal malformation subtype of recto-bladder neck fistula. J Pediatr Urol 2017; 13:376.e1-376.e6. [PMID: 28733158 DOI: 10.1016/j.jpurol.2017.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 06/27/2017] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Patients with anorectal malformations (ARMs) have a high incidence of genitourinary anomalies. Those with a recto-bladder neck fistula may represent a high-risk group, but their long-term urologic outcomes are poorly described. OBJECTIVE To evaluate the clinical and urodynamic outcomes in a large cohort of patients with an ARM subtype of recto-bladder neck fistula. MATERIALS AND METHODS A retrospective cohort study was performed of patients who had been treated for a recto-bladder neck fistula at the present institution since 2007. The primary outcomes were the ability to achieve urinary continence after 4 years of age, and development of a mildly decreased glomerular filtration rate (GFR) or worse (<89 ml/min/1.73 m2). Continence was defined as the ability to store urine for 3-4 h during the day and 8 h overnight without leakage. RESULTS Demographic and clinical data are provided in the Summary Table. The most recent urodynamic findings included the presence of detrusor overactivity in 30 (75%) patients, median leak point pressure of 56.0 cmH2O (range, 14-140), median functional cystometric capacity at 40 cmH2O of 125.5% age-expected capacity (range, 36-473%), and median maximum cystometric capacity of 131.0% age-expected capacity (range, 44-473%). A mildly decreased GFR or worse developed in 13 (24%) patients. Of the 52 (78%) patients who were followed by pediatric urology at the present institution with a median follow-up of 30.9 months (range, 0.0-86.8), 35 (67%) were at least 4 years of age and could be assessed for continence. Continence was achieved in five (14%) patients voiding spontaneously and 15 (43%) performing CIC. Recurrent urinary tract infections (UTI) (OR 0.70, P = 0.006) were an independent predictor of incontinence, while urethral anomalies (OR 1.40, P = 0.03) were an independent predictor of chronic kidney disease (CKD) on multiple logistic regression analysis. DISCUSSION The findings favorably compared with other studies, but were more robust due to the size of the cohort and breadth of urologic evaluation. Limitations included the retrospective design at a single institution. Incomplete clinical data and misclassification of continence may have lead to bias. CONCLUSIONS This large cohort of patients with an ARM subtype of recto-bladder neck fistula had a high incidence of genitourinary anomalies. They were rarely able to achieve continence with spontaneous voiding alone and were at risk of developing CKD, both of which were likely multifocal in origin. Long-term urologic follow-up is warranted for patients with a recto-bladder neck fistula.
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Affiliation(s)
- A C Strine
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
| | - B A VanderBrink
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Z Alam
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - M Schulte
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - P H Noh
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - W R DeFoor
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - E Minevich
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - C A Sheldon
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - J S Frischer
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - P P Reddy
- Division of Pediatric Urology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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Nokoff NJ, Palmer B, Mullins AJ, Aston CE, Austin P, Baskin L, Bernabé K, Chan YM, Cheng EY, Diamond DA, Fried A, Frimberger D, Galan D, Gonzalez L, Greenfield S, Kolon T, Kropp B, Lakshmanan Y, Meyer S, Meyer T, Mullins LL, Paradis A, Poppas D, Reddy P, Schulte M, Reyes KJS, Swartz JM, Wolfe-Christensen C, Yerkes E, Wisniewski AB. Prospective assessment of cosmesis before and after genital surgery. J Pediatr Urol 2017; 13:28.e1-28.e6. [PMID: 27887913 PMCID: PMC5894813 DOI: 10.1016/j.jpurol.2016.08.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/31/2016] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Little data exist about the surgical interventions taking place for children with disorders of sex development (DSD). Most studies that have evaluated cosmetic outcomes after genitoplasty have included retrospective ratings by a physician at a single center. OBJECTIVE The present study aimed to: 1) describe frequency of sex assignment, and types of surgery performed in a cohort of patients with moderate-to-severe genital ambiguity; and 2) prospectively determine cosmesis ratings by parents and surgeons before and after genital surgery. STUDY DESIGN This prospective, observational study included children aged <2 years of age, with no prior genitoplasty at the time of enrollment, moderate-to-severe genital atypia, and being treated at one of 11 children's hospitals in the United States of America (USA). Clinical information was collected, including type of surgery performed. Parents and the local pediatric urologist rated the cosmetic appearance of the child's genitalia prior to and 6 months after genitoplasty. RESULTS Of the 37 children meeting eligibility criteria, 20 (54%) had a 46,XX karyotype, 15 (40%) had a 46,XY karyotype, and two (5%) had sex chromosome mosaicism. The most common diagnosis overall was congenital adrenal hyperplasia (54%). Thirty-five children had surgery; 21 received feminizing genitoplasty, and 14 had masculinizing genitoplasty. Two families decided against surgery. At baseline, 22 mothers (63%), 14 fathers (48%), and 35 surgeons (100%) stated that they were dissatisfied or very dissatisfied with the appearance of the child's genitalia. Surgeons rated the appearance of the genitalia significantly worse than mothers (P < 0.001) and fathers (P ≤ 0.001) at baseline. At the 6-month postoperative visit, cosmesis ratings improved significantly for all groups (P < 0.001 for all groups). Thirty-two mothers (94%), 26 fathers (92%), and 31 surgeons (88%) reported either a good outcome, or they were satisfied (see Summary Figure); there were no significant between-group differences in ratings. DISCUSSION This multicenter, observational study showed surgical interventions being performed at DSD centers in the USA. While parent and surgeon ratings were discordant pre-operatively, they were generally concordant postoperatively. Satisfaction with postoperative cosmesis does not necessarily equate with satisfaction with the functional outcome later in life. CONCLUSION In this cohort of children with genital atypia, the majority had surgery. Parents and surgeons all rated the appearance of the genitalia unfavorably before surgery, with surgeons giving worse ratings than parents. Cosmesis ratings improved significantly after surgery, with no between-group differences.
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Affiliation(s)
- N J Nokoff
- Department of Pediatrics, Section of Pediatric Endocrinology, University of Colorado Denver School of Medicine, 13123 East 16th Ave Box B265, Aurora 80045, CO, USA.
| | - B Palmer
- Department of Urology, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
| | - A J Mullins
- Department of Psychology, Oklahoma State University, 116 North Murray, Stillwater 74078, OK, USA
| | - C E Aston
- Department of Pediatrics, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
| | - P Austin
- Department of Surgery, Division of Urology, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8242, St. Louis 63110, MO, USA
| | - L Baskin
- Department of Urology, University of California San Francisco, 400 Parnassus Ave, San Francisco 94143, CA, USA
| | - K Bernabé
- Department of Urology, Weill Cornell Medicine, 525 East 68th St., Box 94, New York 10065, NY, USA
| | - Y-M Chan
- Department of Pediatrics, Division of Endocrinology, Harvard Medical School, 300 Longwood Ave, Boston 02115, MA, USA
| | - E Y Cheng
- Department of Urology, Northwestern University, Feinberg School of Medicine, 225 E Chicago Ave, Box 24, Chicago 60611, IL, USA
| | - D A Diamond
- Department of Urology, Harvard Medical School, 300 Longwood Ave, Boston 02115, MA, USA
| | - A Fried
- Department of Pediatric Urology, Women and Children's Hospital of Buffalo, Buffalo 14222, NY, USA
| | - D Frimberger
- Department of Urology, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
| | - D Galan
- Department of Urology, Weill Cornell Medicine, 525 East 68th St., Box 94, New York 10065, NY, USA
| | - L Gonzalez
- Pediatric Nephrology and Urology, University of California San Francisco, 400 Parnassus Ave, San Francisco 94143, CA, USA
| | - S Greenfield
- Department of Pediatric Urology, Women and Children's Hospital of Buffalo, Buffalo 14222, NY, USA
| | - T Kolon
- Department of Urology, Perelman School of Medicine, University of Pennsylvania, 34th Street & Civic Center Blvd., Philadelphia 19104, PA, USA
| | - B Kropp
- Department of Urology, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
| | - Y Lakshmanan
- Department of Urology, Wayne State University School of Medicine, 3901 Beaubien, Detroit 48201, MI, USA
| | - S Meyer
- Department of Pediatric Urology, Women and Children's Hospital of Buffalo, Buffalo 14222, NY, USA
| | - T Meyer
- Department of Urology, Northwestern University, Feinberg School of Medicine, 225 E Chicago Ave, Box 24, Chicago 60611, IL, USA
| | - L L Mullins
- Department of Psychology, Oklahoma State University, 116 North Murray, Stillwater 74078, OK, USA
| | - A Paradis
- Department of Surgery, Division of Urology, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8242, St. Louis 63110, MO, USA
| | - D Poppas
- Department of Urology, Weill Cornell Medicine, 525 East 68th St., Box 94, New York 10065, NY, USA
| | - P Reddy
- Department of Pediatrics, Division of Pediatric Urology, University of Cincinnati College of Medicine, Cincinnati Children's Hospital Medical Center, MLC 5037, 3333 Burnet Ave, Cincinnati, OH, USA
| | - M Schulte
- Department of Pediatrics, Division of Pediatric Urology, University of Cincinnati College of Medicine, Cincinnati Children's Hospital Medical Center, MLC 5037, 3333 Burnet Ave, Cincinnati, OH, USA
| | - K J Scott Reyes
- Department of Urology, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
| | - J M Swartz
- Department of Pediatrics, Division of Endocrinology, Harvard Medical School, 300 Longwood Ave, Boston 02115, MA, USA
| | - C Wolfe-Christensen
- Department of Pediatrics, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA; Department of Urology, Wayne State University School of Medicine, 3901 Beaubien, Detroit 48201, MI, USA
| | - E Yerkes
- Department of Urology, Northwestern University, Feinberg School of Medicine, 225 E Chicago Ave, Box 24, Chicago 60611, IL, USA
| | - A B Wisniewski
- Department of Urology, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA; Department of Pediatrics, The University of Oklahoma College of Medicine, 920 Stanton L Young Blvd, WP 3150, Oklahoma City 72104, OK, USA
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Hadji P, Kyvernitakis I, Kann PH, Niedhart C, Hofbauer LC, Schwarz H, Kurth AA, Thomasius F, Schulte M, Intorcia M, Psachoulia E, Schmid T. GRAND-4: the German retrospective analysis of long-term persistence in women with osteoporosis treated with bisphosphonates or denosumab. Osteoporos Int 2016; 27:2967-78. [PMID: 27172934 PMCID: PMC5042990 DOI: 10.1007/s00198-016-3623-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/28/2016] [Indexed: 11/02/2022]
Abstract
UNLABELLED This retrospective database study assessed 2-year persistence with bisphosphonates or denosumab in a large German cohort of women with a first-time prescription for osteoporosis treatment. Compared with intravenous or oral bisphosphonates, 2-year persistence was 1.5-2 times higher and risk of discontinuation was significantly lower (P < 0.0001) with denosumab. INTRODUCTION Persistence with osteoporosis therapies is critical for fracture risk reduction. Detailed data on long-term persistence (≥2 years) with bisphosphonates and denosumab are sparse. METHODS From the German IMS® database, we included women aged 40 years or older with a first-time prescription for bisphosphonates or denosumab between July 2010 and August 2014; patients were followed up until December 2014. The main outcome was treatment discontinuation, with a 60-day permissible gap between filled prescriptions. Two-year persistence was estimated using Kaplan-Meier survival curves, with treatment discontinuation as the failure event. Denosumab was compared with intravenous (i.v.) and oral bisphosphonates separately. Cox proportional hazard ratios (HRs) for the 2-year risk of discontinuation were calculated, with adjustment for age, physician specialty, health insurance status, and previous medication use. RESULTS Two-year persistence with denosumab was significantly higher than with i.v. or oral bisphosphonates (39.8 % [n = 21,154] vs 20.9 % [i.v. ibandronate; n = 20,472] and 24.8 % [i.v. zoledronic acid; n = 3966] and 16.7-17.5 % [oral bisphosphonates; n = 114,401]; all P < 0.001). Patients receiving i.v. ibandronate, i.v. zoledronic acid, or oral bisphosphonates had a significantly increased risk of treatment discontinuation than did those receiving denosumab (HR = 1.65, 1.28, and 1.96-2.02, respectively; all P < 0.0001). CONCLUSIONS Two-year persistence with denosumab was 1.5-2 times higher than with i.v. or oral bisphosphonates, and risk of discontinuation was significantly lower with denosumab than with bisphosphonates. A more detailed understanding of factors affecting medication-taking behavior may improve persistence and thereby reduce rates of fracture.
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Affiliation(s)
- P Hadji
- Department of Bone Oncology, Endocrinology, and Reproductive Medicine, Krankenhaus Nordwest, Steinbacher Hohl 2-26, 60488, Frankfurt am Main, Germany.
| | - I Kyvernitakis
- Department of Bone Oncology, Gynecological Endocrinology and Reproductive Medicine, Nordwest Hospital, Frankfurt am Main, Germany
| | - P H Kann
- Centre for Internal Medicine - Endocrinology & Diabetes, Philipps University of Marburg, Marburg, Germany
| | | | - L C Hofbauer
- Division of Endocrinology, Diabetes, and Bone Diseases, Department of Medicine 3 and Center for Healthy Aging, TU Dresden Medical Center, Dresden, Germany
| | - H Schwarz
- Facharztpraxis für Orthopädie und Physiotherapie, Freudenstadt, Germany
| | - A A Kurth
- Themistocles Gluck Hospital, Ratingen, Germany
| | - F Thomasius
- Department of Bone Oncology and Osteoporosis Center, Krankenhaus Nordwest, Frankfurt am Main, Germany
| | - M Schulte
- Amgen (Europe) GmbH, Munich, Germany
| | | | | | - T Schmid
- Amgen (Europe) GmbH, Munich, Germany
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Holodniy M, Charlebois ED, Bangsberg DR, Zolopa AR, Schulte M, Moss AR. Prevalence of antiretroviral drug resistance in the HIV-1-infected urban indigent population in San Francisco: a representative study. Int J STD AIDS 2016; 15:543-51. [PMID: 15307966 DOI: 10.1258/0956462041558212] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We determined the prevalence of antiretroviral (ARV) resistance in HIV-1 infected indigent persons in San Francisco, California. Three hundred and twenty-seven subjects (159 (49%) ARV naïve, and 168 (51%) ARV-experienced), were recruited during 1996–97 and 1999–2000. Plasma HIV-1 viral load quantification and genotypic resistance testing were performed. Twice as many subjects received nucleoside reverse transcriptase inhibitors (NRTIs) as non-nucleoside reverse transcriptase inhibitors (NNRTIs) or protease inhibitors (PIs); resistance mutation prevalences were 30%, 14% and 16% respectively. Risk of any resistance mutations was strongly and independently associated with prior ARV exposure (OR = 1.3 per year of exposure, P < 0.0001) and with ARV exposure prior to HAART (OR = 2.5, P = 0.015). Prevalences of primary ARV resistance mutations among both treatment-naive and treatment-experienced subjects in this indigent urban population are low compared to other observational cohorts, are directly related to length and type of prior ARV exposure, and did not increase significantly between recruitment periods.
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Affiliation(s)
- M Holodniy
- AIDS Research Center, VA Palo Alto Health Care System, Palo Alto, USA
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Schulte M, Hser Y, Saxon A, Evans E, Li L, Huang D, Hillhouse M, Thomas C, Ling W. Risk Factors Associated with HCV Among Opioid-Dependent Patients in a Multisite Study. J Community Health 2016; 40:940-7. [PMID: 25814381 DOI: 10.1007/s10900-015-0016-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We examined risk factors associated with hepatitis C virus (HCV) infection among opioid-dependent patients enrolled into medication-assisted therapy (buprenorphine or methadone) to determine factors affecting chronic infection. Patients (N = 1039) were randomized as part of a larger, multisite clinical trial sponsored by the National Drug Abuse Treatment Clinical Trials Network assessing liver function. HCV status was first assessed with an antibody screen; if positive, then current infection was determined with an antigen screen testing for detectable virus. Patients were classified as HCV negative, HCV positive but have cleared the virus, or as having chronic HCV. Logistic regression analysis was used to examine demographic and behavioral correlates of the three groups. Thirty-four percent of patients were classified with chronic infection and 14% had evidence of prior infection with apparent clearing of the virus. Chronic infection was associated with recent injection drug use and cocaine use. Chronic HCV infection was also associated with being older and Hispanic. Age, ethnicity, and current drug use increase the likelihood of being chronically infected with HCV. Strategies targeting high risk subgroups can aid in preventing further disease escalation.
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Affiliation(s)
- M Schulte
- UCLA Integrated Substance Abuse Programs, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, 11075 Santa Monica Blvd., Suite 200, Los Angeles, CA, 90025, USA,
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Schulte M, Boots C, Omurtag K, Jungheim E. Banking on the future: insight into college coeds views on oocyte cryopreservation. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2015.12.099] [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: 11/26/2022]
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Schulte M, Lörch N, Leroux ID, Schmidt PO, Hammerer K. Quantum Algorithmic Readout in Multi-Ion Clocks. Phys Rev Lett 2016; 116:013002. [PMID: 26799016 DOI: 10.1103/physrevlett.116.013002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Indexed: 06/05/2023]
Abstract
Optical clocks based on ensembles of trapped ions promise record frequency accuracy with good short-term stability. Most suitable ion species lack closed transitions, so the clock signal must be read out indirectly by transferring the quantum state of the clock ions to cotrapped logic ions of a different species. Existing methods of quantum logic readout require a linear overhead in either time or the number of logic ions. Here we describe a quantum algorithmic readout whose overhead scales logarithmically with the number of clock ions in both of these respects. The scheme allows a quantum nondemolition readout of the number of excited clock ions using a single multispecies gate operation which can also be used in other areas of ion trap technology such as quantum information processing, quantum simulations, metrology, and precision spectroscopy.
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Affiliation(s)
- M Schulte
- Institute for Theoretical Physics and Institute for Gravitational Physics (Albert-Einstein-Institute), Leibniz University Hannover, Callinstrasse 38, 30167 Hannover, Germany
| | - N Lörch
- Institute for Theoretical Physics and Institute for Gravitational Physics (Albert-Einstein-Institute), Leibniz University Hannover, Callinstrasse 38, 30167 Hannover, Germany
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - I D Leroux
- QUEST Institut, Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
| | - P O Schmidt
- QUEST Institut, Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
- Institute for Quantum Optics, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany
| | - K Hammerer
- Institute for Theoretical Physics and Institute for Gravitational Physics (Albert-Einstein-Institute), Leibniz University Hannover, Callinstrasse 38, 30167 Hannover, Germany
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Sadeghi AM, Flynn M, Davison T, Schulte M, Hillbratt M. Accuracy and precision of direct bone conduction measurements. B-ENT 2016; 12:41-51. [PMID: 27097393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
OBJECTIVES Variability in Baha® sound processor fittings arise from several sources including the nature of the implant-to-bone transmission and transcranial attenuation in patients with single-sided sensorineural deafness. One method of improving the predictability of Baha fittings is to measure the individual patient's actual bone conduction thresholds via the implant, thereby removing the influence of skin thickness and/or implant location site. METHODOLOGY One hundred thirty eight adult wearers of the Baha System participated in the study. Direct bone conduction thresholds were obtained through the BC Direct feature of the Cochlear™ Baha Fitting Software combined with the CochlearBaha BP100 sound processor. Test-retest reliability measurement was performed in 58 participants. RESULTS Improved transmission of sound through the implant rather than transcutaneously through the skin was confirmed. On average, the BC Direct thresholds were closer to the patient's unmasked thresholds than the masked values. In patients with single-sided sensorineural deafness, BC Direct results were elevated compared to the contralateral bone conduction thresholds due to transcranial attenuation. The test-retest reliability for the BC Direct measurements was within ±5 dB, which is in within the accepted variability for audiometric test measurements. CONCLUSIONS Direct bone conduction measurement provides a validated method of comparing the transcutaneous thresholds as measured through audiometry with the percutaneous responses from the Baha sound processor. The Baha fitting based on direct measurements of bone conduction may require less fine-tuning and provide a greater understanding of the variability of the bone conduction sound pathway.
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Gómez-Monterde J, Schulte M, Ilijevic S, Hain J, Arencón D, Sánchez-Soto M, Maspoch ML. Morphology and Mechanical Characterization of ABS Foamed by Microcellular Injection Molding. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.proeng.2015.12.462] [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: 10/22/2022]
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Plumb NC, Salluzzo M, Razzoli E, Månsson M, Falub M, Krempasky J, Matt CE, Chang J, Schulte M, Braun J, Ebert H, Minár J, Delley B, Zhou KJ, Schmitt T, Shi M, Mesot J, Patthey L, Radović M. Mixed dimensionality of confined conducting electrons in the surface region of SrTiO3. Phys Rev Lett 2014; 113:086801. [PMID: 25192117 DOI: 10.1103/physrevlett.113.086801] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Indexed: 06/03/2023]
Abstract
Using angle-resolved photoemission spectroscopy, we show that the recently discovered surface state on SrTiO(3) consists of nondegenerate t(2g) states with different dimensional characters. While the d(xy) bands have quasi-2D dispersions with weak k(z) dependence, the lifted d(xz)/d(yz) bands show 3D dispersions that differ significantly from bulk expectations and signal that electrons associated with those orbitals permeate the near-surface region. Like their more 2D counterparts, the size and character of the d(xz)/d(yz) Fermi surface components are essentially the same for different sample preparations. Irradiating SrTiO(3) in ultrahigh vacuum is one method observed so far to induce the "universal" surface metallic state. We reveal that during this process, changes in the oxygen valence band spectral weight that coincide with the emergence of surface conductivity are disproportionate to any change in the total intensity of the O 1s core level spectrum. This signifies that the formation of the metallic surface goes beyond a straightforward chemical doping scenario and occurs in conjunction with profound changes in the initial states and/or spatial distribution of near-E(F) electrons in the surface region.
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Affiliation(s)
- N C Plumb
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - M Salluzzo
- CNR-SPIN, Complesso Universitario Monte S. Angelo, Via Cinthia I-80126, Napoli, Italy
| | - E Razzoli
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - M Månsson
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and Laboratory for Solid State Physics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - M Falub
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - J Krempasky
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - C E Matt
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Laboratory for Solid State Physics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - J Chang
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - M Schulte
- Department Chemie, Ludwig-Maximilians-Universität München, 81377 München, Germany
| | - J Braun
- Department Chemie, Ludwig-Maximilians-Universität München, 81377 München, Germany
| | - H Ebert
- Department Chemie, Ludwig-Maximilians-Universität München, 81377 München, Germany
| | - J Minár
- Department Chemie, Ludwig-Maximilians-Universität München, 81377 München, Germany and New Technologies-Research Center, University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic
| | - B Delley
- Condensed Matter Theory Group, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - K-J Zhou
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - T Schmitt
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - M Shi
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - J Mesot
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and Laboratory for Solid State Physics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - L Patthey
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - M Radović
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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Jacobs VR, Wertaschnigg D, Schulte M, Wald M, Rohde E, Fischer T. Prozessoptimierung zur Reduktion unnötiger Blutgruppenbestimmung in der Geburtshilfe mit Einsparpotential von über 100.000 € pro Jahr. Geburtshilfe Frauenheilkd 2013. [DOI: 10.1055/s-0033-1347806] [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] Open
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Schulte M, Schon S, Tuuli M, DeUgarte D, Jungheim E. Obesity and in vitro fertilization (IVF) with donor oocytes: a systematic review and meta-analysis. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.742] [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: 11/17/2022]
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Abstract
Purpose. Chondrosarcoma (CS) most commonly involves the pelvis. The factors that influence local and systemic control of pelvic CS and the functional outcome should be evaluated.Patients. Fifty-one patients (37 males and 14 females; mean age, 39.4 years) with pelvic CS were included in this retrospective study.Methods. The tumor stage, surgical treatment, surgical margin achieved, complications, incidence of local recurrence (LR), incidence of distant metastases, and the oncologic and functional status were evaluated. Oncologic outcome was estimated by the method of Kaplan and Meier, and the functional status was scored according to Musculoskeleral Tumor Society (MSTS) criteria. Analysis of variance was used to determine the factors that influence the oncologic and functional outcome.Results. Surgical stages were IA in three cases, IB in 23, IIB in 23, and III in two. Hemipelvectomy (H) was performed in 13 cases, internal hemipelvectomy (IH) with endoprosthetic replacement in 17, and continuity resection (CR) in 23.Two patients received IH and CR, one due to LR, and one due to instability. Radical or wide margins were achieved in 27 cases, marginal margins in 16, and intralesional margins in eight. Local complication required additional surgery in 10 cases due to local infections and/or hematomas.Two patients died perioperatively. In 48 out of the 49 remaining patients, follow-up was available with a mean duration of 73.4 months (range, 4-229 months).Twenty patients died of the disease, two patients are alive with metastases, four patients are disease free after LR, and 22 patients show no evidence of the disease. LR occurred in 10 cases (20.4%), and 17 patients (34.6%) developed distant metastases. Functional evaluation of the 28 survivors revealed good and excellent results in 19 cases, fair in three and poor in six.The mean MSTS score of all survivors was 69.2%, after H it was 37.6%, after IH was 61.4%, and after CR was 79.5%.Conclusion. In pelvic chondrosarcoma, survival was determined by the tumor stage and the surgical margin achieved.The incidence of LR was influenced by the surgical margin achieved, whereas the incidence of distant metastases was influenced by the tumor stage. The best oncologic results in chondrosarcoma involving the innominate bone could be found in low-grade tumors, and the best functional results after continuity resection and restoration of the pelvic girdle.
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Affiliation(s)
- R J Wirbel
- Department of Trauma Hand and Reconstructive Surgery University of Saarland Homburg Germany
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Schulte M, Kappeler D, Bilstein A, Meyer T, Scheuch G. Entzündungshemmende Effekte der Ectoin Inhalationslösung bei Patienten mit milden Asthma. Pneumologie 2011. [DOI: 10.1055/s-0031-1272235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Müller-Späth T, Aumann L, Ströhlein G, Kornmann H, Valax P, Delegrange L, Charbaut E, Baer G, Lamproye A, Jöhnck M, Schulte M, Morbidelli M. Two step capture and purification of IgG2 using multicolumn countercurrent solvent gradient purification (MCSGP). Biotechnol Bioeng 2011; 107:974-84. [PMID: 20677181 DOI: 10.1002/bit.22887] [Citation(s) in RCA: 50] [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] [Indexed: 11/10/2022]
Abstract
A two-step chromatography process for monoclonal antibody (mAb) purification from clarified cell culture supernatant (cCCS) was developed using cation exchange Multicolumn Countercurrent Solvent Gradient Purification (MCSGP) as a capture step. After an initial characterization of the cell culture supernatant the capture step was designed from a batch gradient elution chromatogram. A variety of chromatographic materials was screened for polishing of the MCSGP-captured material in batch mode. Using multi-modal anion exchange in bind-elute mode, mAb was produced consistently within the purity specification. The benchmark was a state-of-the-art 3-step chromatographic process based on protein A, anion and cation exchange stationary phases. The performance of the developed 2-step process was compared to this process in terms of purity, yield, productivity and buffer consumption. Finally, the potential of the MCSGP process was investigated by comparing its performance to that of a classical batch process that used the same stationary phase.
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Affiliation(s)
- T Müller-Späth
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
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Schulz N, Kolenda H, Thiel A, Vestring T, Schulte M. [Subarachnoid pleural fistula and subsequent pneumocephalus as complication of vertebral body replacement of the thoracic spine]. Unfallchirurg 2010; 113:951-6. [PMID: 20830580 DOI: 10.1007/s00113-010-1798-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A pneumocephalus caused by a subarachnoid pleural fistula following spinal surgery using an anterior approach is a rare complication, especially in vertebral body replacement. We report the case of a 66-year-old male suffering from metastatic prostatic cancer of the thoracic spine who underwent replacement of a vertebral body using a transthoracic approach. A pneumocephalus occurred 4 weeks postoperatively resulting in delirium.
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Affiliation(s)
- N Schulz
- Klinik für Unfall- und Wiederherstellungschirurgie, Orthopädische Chirurgie, Diakoniekrankenhaus Rotenburg (Wümme), Rotenburg, Deutschland
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Abstract
PURPOSE Malignant soft tissue tumours appear infrequently in comparison to benign lesions. Clinical misdiagnosis leads to inadequate or delayed therapy in many cases of soft tissue sarcoma. The present study explores the question if ultrasonography as a widely-used diagnostic tool allows for a discrimination of benign and malignant soft tissue tumours. MATERIALS AND METHODS In a prospective study over a period of 8 years 224 histologically ascertained solid soft tissue tumours, thereof 120 sarcomas and 27 aggressive benign lesions were investigated by B-mode and colour Doppler sonography. The echotexture was analysed computer-based using the parameters echogenicity, homogeneity and vascularisation in all lesions. RESULTS Different tumour groups showed typical patterns of echotexture, which enabled a classification using 6 categories, distinguishing homogenous hyperechoic, heavily inhomogeneous and homogenous hypoechoic lesions, each group linked to an elevated or low vascularisation. Implementation of the proposed classification revealed a sensitivity in the detection of soft tissue sarcomas and aggressive benign lesions of 94.4 % with a specificity of 79.7 % and an accuracy of 89.7 %. CONCLUSION Ultrasonography allows for a determination of the diagnostic and therapeutic procedure in soft tissue tumours. Due to the fact that soft tissue sarcomas present hypervascularised almost exclusively, predominantly homogenous hypoechoic, rarely homogenous hyperechoic, and aggressive benign tumours present homogenous hypoechoic predominantly, such patterns require a biopsy prior to further surgical therapy. However, in homogenous hyperechoic lesions displaying a low blood flow either a primary resection or a conservative treatment with follow-up examinations can be discussed depending on clinical findings and history of the patient. Although the group of heavily inhomogeneous tumours within our collective consisted of benign lesions exclusively, biopsy should be recommended in theses cases in order to exclude a soft tissue sarcoma.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Child
- Child, Preschool
- Diagnosis, Differential
- Female
- Humans
- Infant
- Lymphoma, Non-Hodgkin/classification
- Lymphoma, Non-Hodgkin/diagnostic imaging
- Lymphoma, Non-Hodgkin/pathology
- Male
- Middle Aged
- Neoplasm Staging
- Neovascularization, Pathologic/classification
- Neovascularization, Pathologic/diagnostic imaging
- Neovascularization, Pathologic/pathology
- Prospective Studies
- Sarcoma/blood supply
- Sarcoma/classification
- Sarcoma/diagnostic imaging
- Sarcoma/pathology
- Sensitivity and Specificity
- Soft Tissue Neoplasms/blood supply
- Soft Tissue Neoplasms/classification
- Soft Tissue Neoplasms/diagnostic imaging
- Soft Tissue Neoplasms/pathology
- Soft Tissue Neoplasms/secondary
- Ultrasonography, Doppler, Color
- Young Adult
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Affiliation(s)
- M Schulte
- Klinik für Unfall- und Wiederherstellungschirurgie, Orthopädische Chirurgie, Diakoniekrankenhaus Rotenburg.
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Steinstraesser L, Sorkin M, Niederbichler AD, Becerikli M, Stupka J, Daigeler A, Kesting MR, Stricker I, Jacobsen F, Schulte M. A novel human skin chamber model to study wound infection ex vivo. Arch Dermatol Res 2009; 302:357-65. [PMID: 19956960 PMCID: PMC2876270 DOI: 10.1007/s00403-009-1009-8] [Citation(s) in RCA: 17] [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: 10/02/2009] [Revised: 11/11/2009] [Accepted: 11/16/2009] [Indexed: 11/28/2022]
Abstract
Wound infections with multi-drug resistant bacteria increase morbidity and mortality and have considerable socioeconomic impact. They can lead to impaired wound healing, resulting in rising treatment costs. The aim of this study was to investigate an ex vivo human wound infection model. Human full-thickness skin from the operating room (OR) was placed into the Bo-Drum® and cultivated for 7 days in an air–liquid interphase. On day 8, the skin was inoculated with either (1) Pseudomonas aeruginosa, (2) Staphylococcus aureus (105 CFU, n = 3) or (3) carrier control. 1, 3 and 7 days after inoculation colony forming units in the tissue/media were determined and cytokine expression was quantified. A reliable and reproducible wound infection could be established for 7 days. At this timepoint, 1.8 × 108 CFU/g tissue of P. aeruginosa and 2 × 107 CFU/g tissue of S. aureus were detected. Immunohistochemical analysis demonstrated bacterial infection and epidermolysis in infected skin. RT-PCR analysis exhibited a significant induction of proinflammatory cytokines after infection. The BO-drum® is a robust, easy-to-use, sterilizable and reusable ex vivo full-skin culture system. For investigation of wound infection, treatment and healing, the BO-drum® presents a convenient model and may help to standardize wound research.
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Affiliation(s)
- Lars Steinstraesser
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany.
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Witte D, Bernd L, Bruns J, Gosheger G, Hardes J, Hartwig E, Lehner B, Melcher I, Mutschler W, Schulte M, Tunn PU, Wozniak W, Zahlten-Hinguranage A, Zeifang F. Limb-salvage reconstruction with MUTARS® hemipelvic endoprosthesis: A prospective multicenter study. Eur J Surg Oncol 2009; 35:1318-25. [DOI: 10.1016/j.ejso.2009.04.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 04/22/2009] [Accepted: 04/24/2009] [Indexed: 10/20/2022] Open
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Barrande M, Beurroies I, Denoyel R, Tatárová I, Gramblička M, Polakovič M, Joehnck M, Schulte M. Characterisation of porous materials for bioseparation. J Chromatogr A 2009; 1216:6906-16. [DOI: 10.1016/j.chroma.2009.07.075] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 07/15/2009] [Accepted: 07/27/2009] [Indexed: 10/20/2022]
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35
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Schulte M, Stupka J, Sorkin M, Becerikli M, Al-Benna S, Jacobsen F, Steinstraesser L. A novel human skin chamber model to study wound infection ex vivo. Burns 2009. [DOI: 10.1016/j.burns.2009.06.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Schulte M, Jacobsen F, Otte J, Hirsch T, Al-Benna S, Steinau H, Steinstraesser L. Signal transduction in adenoviral induced immune reaction of the skin. Burns 2009. [DOI: 10.1016/j.burns.2009.06.174] [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: 11/25/2022]
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37
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Thomas H, Storti G, Butté A, Joehnck M, Schulte M, Morbidelli M. Tentacles in biochromatography. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Streit W, Ilmberger N, Barthen P, Ignatiev N, Schulte M, Schmitz R. Biokatalystoren aus nicht-kultivierten Bakterien für die Hydrolyse von Zellulose in Ionischen Flüssigkeiten. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950572] [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: 11/11/2022]
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39
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Thöm K, Bontikous S, Engelhardt M, Düring T, Schulte M. [Intracortical dedifferentiated chondrosarcoma]. Unfallchirurg 2009; 112:656-60. [PMID: 19543872 DOI: 10.1007/s00113-008-1564-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chondrosarcoma is the second most frequent mesenchymal malignant tumour of the bone. Classification of this kind of tumour is made by clinical, radiological und pathological means. A case of an intracortical chondrosarcoma was first reported by Babinet et al. 2003 [2]. During the staging examination of a 59-year-old patient referred to our clinic because of a squamous cell carcinoma of the oropharynx, we also found a highly malignant intracortical dedifferentiated chondrosarcoma of the distal femur shaft. Due to the primary assumption of bone metastasis of the oropharynx tumour, marginal extralesional tumour resection was performed followed by composite osteosynthesis. Considerations on differential diagnosis and their implications for further therapy are discussed.
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Affiliation(s)
- K Thöm
- Klinik für Unfall- und Wiederherstellungschirurgie, Orthopädische Chirurgie, Diakoniekrankenhaus Rotenburg (Wümme), Elise-Averdieck-Strasse 17, Rotenburg (Wümme).
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Porzsolt F, Wirth A, Mayer-Steinacker R, Suhr P, Warszawski N, Schulte M, Negri G, Kleeberger L, Link KH, Betz E, Sarkar M, Röttinger E. Quality Assurance in Oncology: Definition of Treatment Goal and Assessment of Its Achievement. Oncol Res Treat 2009. [DOI: 10.1159/000218454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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41
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Simon L, Schietzel T, Gärtner C, Kümmell H, Schulte M. Ein anthroposophisches Therapiekonzept für entzündlich-rheumatische Erkrankungen – Ergebnisse einer zweijährigen Pilotstudie. Complement Med Res 2009. [DOI: 10.1159/000210288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Brand P, Schulte M, Wencker M, Herpich CH, Klein G, Hanna K, Meyer T. Lung deposition of inhaled 1-proteinase inhibitor in cystic fibrosis and 1-antitrypsin deficiency. Eur Respir J 2009; 34:354-60. [DOI: 10.1183/09031936.00118408] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [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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43
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Santangelo F, Wentink A, Górak A, Pitner W, Schulte M. Aufreinigung von Biokraftstoffen mittels ionischer Flüssigkeiten. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200750504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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45
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Schulte M, Reiss K, Lettau M, Maretzky T, Ludwig A, Hartmann D, de Strooper B, Janssen O, Saftig P. ADAM10 regulates FasL cell surface expression and modulates FasL-induced cytotoxicity and activation-induced cell death. Cell Death Differ 2007; 14:1040-9. [PMID: 17290285 DOI: 10.1038/sj.cdd.4402101] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The apoptosis-inducing Fas ligand (FasL) is a type II transmembrane protein that is involved in the downregulation of immune reactions by activation-induced cell death (AICD) as well as in T cell-mediated cytotoxicity. Proteolytic cleavage leads to the generation of membrane-bound N-terminal fragments and a soluble FasL (sFasL) ectodomain. sFasL can be detected in the serum of patients with dysregulated inflammatory diseases and is discussed to affect Fas-FasL-mediated apoptosis. Using pharmacological approaches in 293T cells, in vitro cleavage assays as well as loss and gain of function studies in murine embryonic fibroblasts (MEFs), we demonstrate that the disintegrin and metalloprotease ADAM10 is critically involved in the shedding of FasL. In primary human T cells, FasL shedding is significantly reduced after inhibition of ADAM10. The resulting elevated FasL surface expression is associated with increased killing capacity and an increase of T cells undergoing AICD. Overall, our findings suggest that ADAM10 represents an important molecular modulator of FasL-mediated cell death.
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Affiliation(s)
- M Schulte
- Biochemical Institute, Christian-Albrecht-University, Kiel, Germany
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Schulte M, Haidl P, Betz R, Wencker M, Meyer T. Handhabung und Bevorzugung von kommerziellen Trockenpulver-Inhalationsgeräten bei Patienten mit Asthma und COPD. Pneumologie 2006. [DOI: 10.1055/s-2006-933934] [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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47
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Jacobsen F, Hirsch T, Mittler D, Schulte M, Lehnhardt M, Druecke D, Homann HH, Steinau HU, Steinstraesser L. Polybrene improves transfection efficacy of recombinant replication-deficient adenovirus in cutaneous cells and burned skin. J Gene Med 2006; 8:138-46. [PMID: 16288494 DOI: 10.1002/jgm.843] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The hostile environment found in acute and chronic wounds decreases the physiological half-life of purified synthetic or recombinant peptides dramatically. Gene therapy, on the other hand, may be a viable option since it relies on the cellular machinery of the host to locally manufacture the proteins of interest. The aim of this study was to evaluate and optimize the local administration of transient cutaneous adenoviral gene delivery in wounds. METHODS Primary human keratinocytes (HKC) and HaCaT cells were transfected with replication-deficient adenovirus (Ad5) containing the reporter gene for beta-galactosidase (LacZ). The vector was used alone or precoated with either (1) Lipofectamine 2000, (2) FuGENE 6, or (3) Polybrene. For in vivo testing a rat burn model was used. Animals were randomized into three groups: (1) Ad5-LacZ alone; (2) Ad5-LacZ precoated with Polybrene, or (3) carrier control (phosphate-buffered saline (PBS)). Samples were harvested from burned and unburned tissue sections after either 48 h or 7 days. Transgene expression was quantified by bioluminometric assay and localized using immunohistochemistry. A BrdU assay was performed to determine the influence of the used transfection reagents on cell proliferation. RESULTS Transfection efficacy was significantly improved in vitro (p < 0.001) as well as in partial thickness burned (p = 0.015) and unburned skin (p > 0.001) after precoating Ad5 with Polybrene compared to Ad5 alone. Transgene expression was 10-fold higher in burned skin (9305 pg/mg protein) compared to unburned skin (859 pg/mg protein). CONCLUSIONS It is feasible to improve transfection efficacy in vitro and in vivo by precoating the adenovirus with Polybrene.
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Affiliation(s)
- F Jacobsen
- Department for Plastic Surgery, Burn Center, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
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Schulte M, Brand P, Smith HJ, Siekmeier R, Meyer T. Messung des funktionellen Totraumes mit Capnovolumetrie. Pneumologie 2005. [DOI: 10.1055/s-2005-922267] [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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49
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Sommerfeld S, Strube J, Schulte M, Ditz R. Lösungsansätze zur systematischen Prozessentwicklung und Auslegung der Aufarbeitung von Biopharmazeutika. CHEM-ING-TECH 2005. [DOI: 10.1002/cite.200590356] [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: 11/10/2022]
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50
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Brand P, Meyer T, Häussermann S, Schulte M, Scheuch G, Bernhard T, Sommerauer B, Weber N, Griese M. Optimum peripheral drug deposition in patients with cystic fibrosis. ACTA ACUST UNITED AC 2005; 18:45-54. [PMID: 15741773 DOI: 10.1089/jam.2005.18.45] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [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: 11/12/2022]
Abstract
In order to identify the optimum particle size and breathing pattern for high peripheral deposition of inhaled drugs in patients with cystic fibrosis, regional deposition in these patients was studied systematically as a function of particle size, inhalation volume and flow rate. Regional deposition was assessed using the single-breath regional deposition technique in which the concentration profile of inhaled and exhaled non-radioactive, monodisperse test particles is analyzed. Using this technique particle deposition within the functional dead space volume and peripherally can be assessed. Regional deposition was measured in 12 patients with cystic fibrosis using 2, 3, 4, and 5.5 microm particles, inhalation volumes of 500, 1000, 1500, and 2000 cm(3), and inhalation flow rates of 100, 250, 500, and 750 cm(3)/sec. Peripheral deposition was highest when 2-3-microm particles were inhaled with air-flow rates of 250-500 cm(3)/sec. With these parameters peripheral deposition increased with increasing inhalation volume and reached values of about 60% of the total drug inhaled. It has been shown that high peripheral drug deposition can be achieved in patients with CF when inhalations are performed using an optimized combination of particle size and breathing pattern.
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Affiliation(s)
- P Brand
- Inamed-Intelligent Aerosol Medicine GmbH, Gauting, Germany.
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