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Cheynis F, Curiotto S, Leroy F, Müller P. Spatial inhomogeneity and temporal dynamics of a 2D electron gas in interaction with a 2D adatom gas. Sci Rep 2017; 7:10642. [PMID: 28878360 PMCID: PMC5587567 DOI: 10.1038/s41598-017-10300-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 08/07/2017] [Indexed: 11/09/2022] Open
Abstract
Fundamental interest for 2D electron gas (2DEG) systems has been recently renewed with the advent of 2D materials and their potential high-impact applications in optoelectronics. Here, we investigate a 2DEG created by the electron transfer from a Ag adatom gas deposited on a Si(111) \documentclass[12pt]{minimal}
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\begin{document}$$\sqrt{{\bf{3}}}{\boldsymbol{\times }}\sqrt{{\bf{3}}}$$\end{document}3×3-Ag surface to an electronic surface state. Using low-energy electron microscopy (LEEM), we measure the Ag adatom gas concentration and the 2DEG-induced charge transfer. We demonstrate a linear dependence of the surface work function change on the Ag adatom gas concentration. A breakdown of the linear relationship is induced by the occurrence of the Ag adatom gas superstructure identified as Si(111) \documentclass[12pt]{minimal}
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\begin{document}$$\sqrt{{\bf{21}}}{\boldsymbol{\times }}\sqrt{{\bf{21}}}$$\end{document}21×21-Ag only observed below room temperature. We evidence below room temperature a confinement of the 2DEG on atomic terraces characterised by spatial inhomogeneities of the 2DEG-induced charge transfer along with temporal fluctuations. These variations mirror the Ag adatom gas concentration changes induced by the growth of 3D Ag islands and the occurrence of an Ehrlich-Schwoebel diffusion barrier of 155 ± 10 meV.
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Affiliation(s)
- F Cheynis
- Aix Marseille Univ, CNRS, CINAM, Marseille, France.
| | - S Curiotto
- Aix Marseille Univ, CNRS, CINAM, Marseille, France
| | - F Leroy
- Aix Marseille Univ, CNRS, CINAM, Marseille, France
| | - P Müller
- Aix Marseille Univ, CNRS, CINAM, Marseille, France
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Brunner TA, Casetti L, Haueter P, Müller P, Nydegger A, Spalinger J. Nutrient intake of Swiss toddlers. Eur J Nutr 2017; 57:2489-2499. [PMID: 28812189 DOI: 10.1007/s00394-017-1521-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 08/06/2017] [Indexed: 12/29/2022]
Abstract
PURPOSE During the first years of life, food preferences are shaped that might last throughout a person's entire life affecting his/her health in the long term. However, knowledge on early feeding habits is still limited for toddlers. Therefore, the goal of the present study was to: (1) assess toddlers' nutrient intake; (2) compare the findings to past studies as well as to national feeding recommendations and (3) identify major food sources for energy and macronutrients. METHODS A food survey using a 4-day diary was conducted. The dietary software nut.s® was used to analyse the data. RESULTS A cohort of 188 healthy toddlers (aged 1-3 years) was analysed. The energy intake of most toddlers was below the recommended daily intake (RDI) but in accordance with earlier studies. Protein intake was three- to fourfold higher than the RDI and reached the proposed upper limit of 15% of total energy intake. Fat intake was in accordance with the RDI, but the balance of saturated and unsaturated fatty acids should be improved. Carbohydrate intake met the RDI. For the micronutrients, iron and vitamin D intakes showed critical values. CONCLUSION As in other European countries, the diet of Swiss toddlers in general seems adequate but does not meet all nutritional requirements. In particular, the quality of the fats and vitamin D supplementation should be improved. For proteins and iron, additional research is needed to gain more confidence in the recommendations.
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Affiliation(s)
- Thomas A Brunner
- School of Agricultural, Forest and Food Sciences, Food Science and Management, Bern University of Applied Sciences, Länggasse 85, 3052, Zollikofen, Switzerland.
| | - Luca Casetti
- School of Agricultural, Forest and Food Sciences, Food Science and Management, Bern University of Applied Sciences, Länggasse 85, 3052, Zollikofen, Switzerland
| | - Petra Haueter
- School of Agricultural, Forest and Food Sciences, Food Science and Management, Bern University of Applied Sciences, Länggasse 85, 3052, Zollikofen, Switzerland
| | - Pascal Müller
- Paediatric Gastroenterology, Children's Hospital of Eastern Switzerland, St. Gallen, Switzerland
| | - Andreas Nydegger
- Paediatric Gastroenterology, Department of Paediatrics, University of Lausanne, Lausanne, Switzerland
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Rogl G, Legut D, Sýkora R, Müller P, Müller H, Bauer E, Puchegger S, Zehetbauer M, Rogl P. Mechanical properties of non-centrosymmetric CePt 3Si and CePt 3B. J Phys Condens Matter 2017; 29:185402. [PMID: 28272023 DOI: 10.1088/1361-648x/aa655b] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Elastic moduli, hardness (both at room temperature) and thermal expansion (4.2-670 K) have been experimentally determined for polycrystalline CePt3Si and its prototype compound CePt3B as well as for single-crystalline CePt3Si. Resonant ultrasound spectroscopy was used to determine elastic properties (Young's modulus E and Poisson's ratio ν) via the eigenfrequencies of the sample and the knowledge of sample mass and dimensions. Bulk and shear moduli were calculated from E and ν, and the respective Debye temperatures were derived. In addition, ab initio DFT calculations were carried out for both compounds. A comparison of parameters evaluated from DFT with those of experiments revealed, in general, satisfactory agreement. Positive and negative thermal expansion values obtained from CePt3Si single crystal data are fairly well explained in terms of the crystalline electric field model, using CEF parameters derived recently from inelastic neutron scattering. DFT calculations, in addition, demonstrate that the atomic vibrations keep almost unaffected by the antisymmetric spin-orbit coupling present in systems with crystal structures having no inversion symmetry. This is opposite to electronic properties, where the antisymmetric spin-orbit interaction has shown to distinctly influence features like the superconducting condensate of CePt3Si.
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Affiliation(s)
- G Rogl
- Institute of Materials Chemistry and Research, University of Vienna, Waehringerstr. 42, A-1090 Wien, Austria. Solid State Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Wien, Austria
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Affiliation(s)
- M Windpessl
- From the Fourth Department of Medicine, Klinikum Wels-Grieskirchen, Grieskirchnerstrasse 42, Wels 4600, Austria
| | - P Müller
- Department of Neurology, Klinikum Wels-Grieskirchen, Grieskirchnerstrasse 42, Wels 4600, Austria
| | - M Wallner
- From the Fourth Department of Medicine, Klinikum Wels-Grieskirchen, Grieskirchnerstrasse 42, Wels 4600, Austria
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Reiniger J, Domdei N, Pfau M, Müller P, Holz F, Harmening W. Adaptive Optiken – Möglichkeiten für die Diagnostik hereditärer Netzhauterkrankungen. Klin Monbl Augenheilkd 2017; 234:311-319. [DOI: 10.1055/s-0043-100631] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
ZusammenfassungAdaptive Optiken (AO) stellen eine technologische Schlüsselinnovation für die Bildgebung in der Ophthalmologie dar. Mit AO ausgestattete Ophthalmoskope erlauben es, die mikroskopische Netzhautstruktur nicht invasiv und auf zellulärer Ebene darzustellen. So kann die strukturelle Integrität der retinalen Nervenfaserschicht, des perifovealen Kapillarnetzwerks, einzelner Stäbchen- und Zapfenphotorezeptoren und des zellulären Mosaiks des retinalen Pigmentepithels in vivo beobachtet werden. Für die Beurteilung des Verlaufs von Netzhauterkrankungen, einer möglichen pharmakologischen Intervention und die Entschlüsselung der zugrunde liegenden physiologischen Mechanismen bedeutet dies eine völlig neue Untersuchungsebene. Insbesondere monogenetische Erkrankungen liegen im Fokus der aktuellen Forschung. Zum einen können Rückschlüsse auf einzelne Pathologien anderer multifaktorieller Netzhauterkrankungen gezogen und so die zugrundeliegenden physiologischen Mechanismen bzw. Verläufe genauer untersucht werden (Modellerkrankung). Zum anderen werden auch im Hinblick auf aktuelle und kommende Interventionen (u. a. Gentherapie) neuartige und zuverlässige Endpunkte zur Interpretation des Therapieerfolgs notwendig. Erste kommerzielle AO-Ophthalmoskope sind für den klinischen Einsatz erhältlich, und die Zahl mit AO untersuchter Netzhautpathologien wächst zunehmend. Für eine zellgenaue Struktur-Funktions-Korrelation kann jüngstens eine AO-basierte Mikrostimulationstechnologie eingesetzt werden.
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Affiliation(s)
- J. Reiniger
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
| | - N. Domdei
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
| | - M. Pfau
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
| | - P. Müller
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
| | - F. Holz
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
| | - W. Harmening
- Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn
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Schröter F, Müller K, Müller P, Krause E, Braun BC. Recombinant expression of porcine spermadhesin AWN and its phospholipid interaction: Indication for a novel lipid binding property. Reprod Domest Anim 2017; 52:585-595. [PMID: 28326614 DOI: 10.1111/rda.12953] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/07/2017] [Indexed: 01/05/2023]
Abstract
AWN is a porcine (Sus scrofa domestica) seminal plasma protein and has been linked to a variety of processes related to fertilization. To acquire the protein in sufficient amount and purity for functional studies, we established its recombinant expression in E. coli and a three-step purification protocol based on different chromatographies. The test for AWN-phospholipid interaction revealed phosphatidic acid and cardiolipin as potential binding partners. As phosphatidic acid is surmised to play a role in cation-induced membrane destabilization and fusion events, we propose a membrane protective function of the presented binding affinity. Further studies with recombinant AWN will allow new insights into the mechanism of sperm-spermadhesin interaction and might provide new approaches for artificial reproduction techniques.
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Affiliation(s)
- F Schröter
- Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - K Müller
- Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - P Müller
- Department of Biology/Biophysics, Humboldt University of Berlin, Berlin, Germany
| | - E Krause
- Department Mass Spectrometry, Leibniz Institute for Molecular Pharmacology, Berlin, Germany
| | - B C Braun
- Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
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Müller P, Junge-Hoffmeister J, Weidner K, Croy I. Einfluss von Bindungsstörung auf die taktile Mutter-Kind-Interaktion. Geburtshilfe Frauenheilkd 2017. [DOI: 10.1055/s-0037-1598137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- P Müller
- Klinik und Poliklinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus, Dresden
| | - J Junge-Hoffmeister
- Klinik und Poliklinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus, Dresden
| | - K Weidner
- Klinik und Poliklinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus, Dresden
| | - I Croy
- Klinik und Poliklinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus, Dresden
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Vacek O, Pastorek M, Durech M, Vojtěšek B, Müller P. [Diagnostic and Therapeutic Potential of Membrane HSP90]. Klin Onkol 2017; 30:191-194. [PMID: 28471204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND Heat shock protein (HSP90) is a molecular chaperone involved in maintaining protein homeostasis by modulating stability of de novo synthesized proteins. Neoplastic cells with high metabolic rate have higher expression of HSP90 and develop so called "chaperone addiction". Specific inhibition of HSP90 has been therefore discussed as a viable therapeutic strategy and several inhibitors of HSP90 have already entered clinical trials. Recently, a novel role for HSP90 was found on plasma membrane of cancer cells. Since then, extracellular HSP90 has been implicated in increased tumor invasiveness and metastasis, but better understanding of its regulation is needed to fully explore its potential in early detection of malignity and import of specific HSP90 inhibitors. We have therefore analyzed correlation of extracellular HSP90 level with import of fluorescently-labeled inhibitor of HSP90 and total expression of HSP90. METHODS Flow cytometry was used to analyze cell uptake of FITC-Geldanamycin as well as level of extracellular HSP90, while total expression of HSP90 was analyzed by SDS-PAGE and subsequently Western blotting. Data was then subjected to statistical analysis to analyze possible correlation. RESULTS We have analyzed import of fluorescently labeled HSP90 inhibitor together with total and membrane level of HSP90 on a panel of selected breast carcinoma cell lines (BT-474, BT-549, BT-20, MCF-7, MDA-MB-468, SK-BR-3 a T-47D). Acquired data were subjected to statistical analysis that revealed a correlation between total and membrane level of HSP90 as well as correlation of ectopic HSP90 with uptake of HSP90 inhibitor. CONCLUSIONS Our analysis has shown that import of HSP90 inhibitors is likely dependent on membrane level of HSP90 as well as its total expression, and therefore can potentially reflect HSP90 addiction of cancer cells.Key words: breast neoplasms - HSP90 - heat shock proteins - geldanamycin This work was supported by MEYS - NPS I - LO1413. The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study. The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers.Submitted: 13. 3. 2017Accepted: 26. 3. 2017.
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Minamisono K, Rossi DM, Beerwerth R, Fritzsche S, Garand D, Klose A, Liu Y, Maaß B, Mantica PF, Miller AJ, Müller P, Nazarewicz W, Nörtershäuser W, Olsen E, Pearson MR, Reinhard PG, Saperstein EE, Sumithrarachchi C, Tolokonnikov SV. Charge Radii of Neutron Deficient ^{52,53}Fe Produced by Projectile Fragmentation. Phys Rev Lett 2016; 117:252501. [PMID: 28036225 DOI: 10.1103/physrevlett.117.252501] [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] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Indexed: 06/06/2023]
Abstract
Bunched-beam collinear laser spectroscopy is performed on neutron deficient ^{52,53}Fe prepared through in-flight separation followed by a gas stopping. This novel scheme is a major step to reach nuclides far from the stability line in laser spectroscopy. Differential mean-square charge radii δ⟨r^{2}⟩ of ^{52,53}Fe are determined relative to stable ^{56}Fe as δ⟨r^{2}⟩^{56,52}=-0.034(13) fm^{2} and δ⟨r^{2}⟩^{56,53}=-0.218(13) fm^{2}, respectively, from the isotope shift of atomic hyperfine structures. The multiconfiguration Dirac-Fock method is used to calculate atomic factors to deduce δ⟨r^{2}⟩. The values of δ⟨r^{2}⟩ exhibit a minimum at the N=28 neutron shell closure. The nuclear density functional theory with Fayans and Skyrme energy density functionals is used to interpret the data. The trend of δ⟨r^{2}⟩ along the Fe isotopic chain results from an interplay between single-particle shell structure, pairing, and polarization effects and provides important data for understanding the intricate trend in the δ⟨r^{2}⟩ of closed-shell Ca isotopes.
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Affiliation(s)
- K Minamisono
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - D M Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - R Beerwerth
- Helmholtz-Institut Jena, Jena 07743, Germany
- Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - S Fritzsche
- Helmholtz-Institut Jena, Jena 07743, Germany
- Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - D Garand
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Klose
- Department of Chemistry, Augustana University, Sioux Falls, South Dakota 57197, USA
| | - Y Liu
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - B Maaß
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P F Mantica
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - A J Miller
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - P Müller
- Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - W Nazarewicz
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
| | - W Nörtershäuser
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - E Olsen
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - M R Pearson
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - P-G Reinhard
- Institut für Theoretische Physik, Universität Erlangen, D-91054 Erlangen, Germany
| | - E E Saperstein
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
- National Research Nuclear University MEPhI, 115409 Moscow, Russia
| | - C Sumithrarachchi
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - S V Tolokonnikov
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
- Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia
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Müller P, Bere J, Fekete E, Móczó J, Nagy B, Kállay M, Gyarmati B, Pukánszky B. Interactions, structure and properties in PLA/plasticized starch blends. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Baeumer C, Raab N, Menke T, Schmitz C, Rosezin R, Müller P, Andrä M, Feyer V, Bruchhaus R, Gunkel F, Schneider CM, Waser R, Dittmann R. Verification of redox-processes as switching and retention failure mechanisms in Nb:SrTiO3/metal devices. Nanoscale 2016; 8:13967-13975. [PMID: 27089047 DOI: 10.1039/c6nr00824k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanoscale redox reactions in transition metal oxides are believed to be the physical foundation of memristive devices, which present a highly scalable, low-power alternative for future non-volatile memory devices. The interface between noble metal top electrodes and Nb-doped SrTiO3 single crystals may serve as a prominent but not yet well-understood example of such memristive devices. In this report, we will present experimental evidence that nanoscale redox reactions and the associated valence change mechanism are indeed responsible for the resistance change in noble metal/Nb-doped SrTiO3 junctions with dimensions ranging from the micrometer scale down to the nanometer regime. Direct verification of the valence change mechanism is given by spectromicroscopic characterization of switching filaments. Furthermore, it is found that the resistance change over time is driven by the reoxidation of a previously oxygen-deficient region. The retention times of the low resistance states, accordingly, can be dramatically improved under vacuum conditions as well as through the insertion of a thin Al2O3 layer which prevents this reoxidation. These insights finally confirm the resistive switching mechanism at these interfaces and are therefore of significant importance for the study and application of memristive devices based on Nb-doped SrTiO3 as well as systems with similar switching mechanisms.
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Affiliation(s)
- C Baeumer
- Peter Gruenberg Institute, Forschungszentrum Juelich GmbH and JARA-FIT, 52425 Juelich, Germany.
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Mikocka-Walus A, Pittet V, Rossel JB, von Känel R, Bauerfeind P, Beglinger C, Begré S, Belli D, Bengoa JM, Biedermann L, Bigler B, Binek J, Blattmann M, Boehm S, Borovicka J, Braegger CP, Brunner N, Bühr P, Burnand B, Burri E, Buyse S, Cremer M, Criblez DH, de Saussure P, Degen L, Delarive J, Doerig C, Dora B, Dorta G, Egger M, Ehmann T, El-Wafa A, Engelmann M, Ezri J, Felley C, Fliegner M, Fournier N, Fraga M, Frei P, Frei R, Fried M, Froehlich F, Funk C, Ivano Furlano R, Gallot-Lavallée S, Geyer M, Girardin M, Golay D, Grandinetti T, Gysi B, Haack H, Haarer J, Helbling B, Hengstler P, Herzog D, Hess C, Heyland K, Hinterleitner T, Hiroz P, Hirschi C, Hruz P, Iwata R, Jost R, Juillerat P, Kessler Brondolo V, Knellwolf C, Knoblauch C, Köhler H, Koller R, Krieger-Grübel C, Kullak-Ublick G, Künzler P, Landolt M, Lange R, Serge Lehmann F, Macpherson A, Maerten P, Maillard MH, Manser C, Manz M, Marbet U, Marx G, Matter C, McLin V, Meier R, Mendanova M, Meyenberger C, Michetti P, Misselwitz B, Moradpour D, Morell B, Mosler P, Mottet C, Müller C, Müller P, Müllhaupt B, Münger-Beyeler C, Musso L, Nagy A, Neagu M, Nichita C, Niess J, Noël N, Nydegger A, Obialo N, Oneta C, Oropesa C, Peter U, Peternac D, Marie Petit L, Piccoli-Gfeller F, Beatrice Pilz J, Pittet V, Raschle N, Rentsch R, Restellini S, Richterich JP, Rihs S, Alain Ritz M, Roduit J, Rogler D, Rogler G, Rossel JB, Sagmeister M, Saner G, Sauter B, Sawatzki M, Schäppi M, Scharl M, Schelling M, Schibli S, Schlauri H, Schmid Uebelhart S, Schnegg JF, Schoepfer A, Seibold F, Seirafi M, Semadeni GM, Semela D, Senning A, Sidler M, Sokollik C, Spalinger J, Spangenberger H, Stadler P, Steuerwald M, Straumann A, Straumann-Funk B, Sulz M, Thorens J, Tiedemann S, Tutuian R, Vavricka S, Viani F, Vögtlin J, Von Känel R, Vonlaufen A, Vouillamoz D, Vulliamy R, Wermuth J, Werner H, Wiesel P, Wiest R, Wylie T, Zeitz J, Zimmermann D. Symptoms of Depression and Anxiety Are Independently Associated With Clinical Recurrence of Inflammatory Bowel Disease. Clin Gastroenterol Hepatol 2016; 14:829-835.e1. [PMID: 26820402 DOI: 10.1016/j.cgh.2015.12.045] [Citation(s) in RCA: 226] [Impact Index Per Article: 28.3] [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: 10/20/2015] [Revised: 12/14/2015] [Accepted: 12/23/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS We examined the relationship between symptoms of depression and anxiety and clinical recurrence of inflammatory bowel disease (IBD) in a large patient cohort. We considered the progression of depression and anxiety over time. METHODS We collected clinical and treatment data on 2007 adult participants of the Swiss IBD study (56% with Crohn's disease [CD], 48% male) performed in Switzerland from 2006 through 2015. Depression and anxiety symptoms were quantified by using the Hospital Anxiety and Depression Scale. The relationship between depression and anxiety scores and clinical recurrence was analyzed by using survival-time techniques. RESULTS We found a significant association between symptoms of depression and clinical recurrence over time (for all patients with IBD, P = .000001; for subjects with CD, P = .0007; for subjects with ulcerative colitis, P = .005). There was also a significant relationship between symptoms of anxiety and clinical recurrence over time in all subjects with IBD (P = .0014) and in subjects with CD (P = .031) but not ulcerative colitis (P = .066). CONCLUSIONS In an analysis of a large cohort of subjects with IBD, we found a significant association between symptoms of depression or anxiety and clinical recurrence. Patients with IBD should therefore be screened for clinically relevant levels of depression and anxiety and referred to psychologists or psychiatrists for further evaluation and treatment.
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Affiliation(s)
- Antonina Mikocka-Walus
- Department of Health Sciences, University of York, York, United Kingdom; School of Psychology, University of Adelaide, Adelaide, Australia; Foundation Brocher, Geneva, Switzerland.
| | - Valerie Pittet
- Health Care Evaluation Unit, Institute of Social and Preventive Medicine, University of Lausanne, Lausanne, Switzerland
| | - Jean-Benoît Rossel
- Health Care Evaluation Unit, Institute of Social and Preventive Medicine, University of Lausanne, Lausanne, Switzerland
| | - Roland von Känel
- Department of Clinical Research, University of Bern, Bern, Switzerland; Department of Neurology, Inselspital, Bern University Hospital, Bern, Switzerland; Department of Psychosomatic Medicine, Clinic Barmelweid, Barmelweid, Switzerland
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Affiliation(s)
- M Windpessl
- From the Fourth Department of Medicine, Klinikum Wels-Grieskirchen, Grieskirchnerstrasse 42, 4600 Wels, Austria and
| | - P Müller
- Department of Neurology, Landesnervenklinik Linz, Wagner-Jauregg-Weg 15, 4020 Linz, Austria
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Jacobs T, Simsek Y, Koval Y, Müller P, Krasnov VM. Sequence of Quantum Phase Transitions in Bi2Sr2CaCu2O(8+δ) Cuprates Revealed by In Situ Electrical Doping of One and the Same Sample. Phys Rev Lett 2016; 116:067001. [PMID: 26919010 DOI: 10.1103/physrevlett.116.067001] [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] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Indexed: 06/05/2023]
Abstract
Our recently discovered electrical doping technique allows a broad-range variation of carrier concentration without changing the chemical composition. We show that it is possible to induce superconductivity in a nondoped insulating sample and to tune it reversibly all the way to an overdoped metallic state. This way, we can investigate the whole doping diagram of one and the same sample. Our study reveals two distinct critical points. The one at the overdoped side is associated with the onset of the pseudogap and with the metal-to-insulator transition in the c-axis transport. The other at optimal doping is associated with the appearance of a "dressed" electron energy. Our study confirms the existence of multiple phase transitions under the superconducting dome in cuprates.
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Affiliation(s)
- Th Jacobs
- Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden
| | - Y Simsek
- Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden
- Department of Physics, Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - Y Koval
- Department of Physics, Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - P Müller
- Department of Physics, Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - V M Krasnov
- Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden
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Skibinski B, Müller P, Uhl W. Rejection of submicron sized particles from swimming pool water by a monolithic SiC microfiltration membrane: Relevance of steric and electrostatic interactions. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.10.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bening C, Hamouda K, Müller P, Özkur M, Leistner M, Leyh R, Schimmer C. The Effect of Bilateral versus Single Internal Thoracic Artery Harvesting on Superficial and Deep Sternal Wound Infection. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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67
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Müllerová Z, Müller T, Křivánková K, Vojtěšek B, Müller P. [Molecular Mechanisms of Carcinogenesis of Epithelial Ovarian Cancers]. Klin Onkol 2016; 29 Suppl 4:46-53. [PMID: 27846720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Epithelial ovarian carcinomas are one of the most common causes of death among gynecologic malignancies in the Czech population. This group of tumors is characterized by considerable heterogeneity in terms of its pathogenesis and response to therapy. It is questionable whether advances in the elucidation of molecular pathogenesis of various types of epithelial ovarian carcinomas can contribute to application of personalized targeted therapy. AIMS This work aims to summarize current knowledge on carcinogenesis and molecular basis of epithelial ovarian cancers and point out their potential applications in clinical practice. The characterization of the epithelial ovarian carcinomas is based on a dualistic model, which divides these tumors into two groups based on their different origins and mechanisms of carcinogenesis. Type I includes low-grade serous carcinomas, endometrioid carcinomas, mucinous carcinomas and Brenner tumor. Type II then comprises high-grade serous carcinomas. CONCLUSION The new findings acquired by next generation sequencing revealed major differences in the genetic alterations in both groups of tumors. Differences in genetic instability between the two groups of tumors determine the mechanisms of their carcinogenesis and show new ways for application of targeted therapy. Deficient homologous recombination and high genetic instability in type II tumors is a prerequisite for efficient application of platinum cytostatics and PARP (poly-ADP ribose polymerase) inhibitors. On the other hand, carcinogenesis of the less aggressive, but often resistant type I tumous is dependent on the activation of signaling pathways PI3K/AKT and RAS/BRAF/MEK/ERK pathway. Targeted inhibition of these pathways could efficiently improve therapy of type I tumors and decrease serious adverse side effects.Key words: ovarian cancer - high-grade serous ovarian carcinoma - low-grade ovarian carcinoma - endometrioid carcinoma - mucinous carcinoma - malignant transformation - genetic instabilityWe would like to thank M.Sc. Eva Michalova for critical reading of the manuscript.This work was supported by the project MEYS - NPS I - LO1413.The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers.Submitted: 7. 8. 2016Accepted: 29. 8. 2016.
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Weißhuhn J, Mark T, Martin M, Müller P, Seifert A, Spange S. Ternary organic–inorganic nanostructured hybrid materials by simultaneous twin polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00903d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The acid and base catalyzed simultaneous twin polymerization to produce ternary organic–inorganic nanostructured hybrid materials consisting of a cross-linked phenolic resin, silica and a disubstituted polysiloxane.
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Affiliation(s)
- J. Weißhuhn
- Department of Polymer Chemistry
- Institute of Chemistry
- Technische Universität Chemnitz
- D-09111 Chemnitz
- Germany
| | - T. Mark
- BASF SE
- D-67056 Ludwigshafen
- Germany
| | - M. Martin
- Department of Polymer Chemistry
- Institute of Chemistry
- Technische Universität Chemnitz
- D-09111 Chemnitz
- Germany
| | | | - A. Seifert
- Department of Polymer Chemistry
- Institute of Chemistry
- Technische Universität Chemnitz
- D-09111 Chemnitz
- Germany
| | - S. Spange
- Department of Polymer Chemistry
- Institute of Chemistry
- Technische Universität Chemnitz
- D-09111 Chemnitz
- Germany
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Trčka F, Müller P, Vojtěšek B. [Mechanisms of Protein Homeostasis Regulation in Cancer Development]. Klin Onkol 2016; 29 Suppl 4:18-24. [PMID: 27846716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND The proteome of eukaryotic cells represents a complex system. Its components are exposed to various intrinsic and extrinsic stresses. Therefore, the function of the cellular proteome is dependent on the existence of compensatory mechanisms balancing the inner protein homeostasis - proteostasis. These mechanisms involve the network of molecular chaperones and transcriptional program regulating their expression. The process of cancerogenesis is accompanied by significant changes in the intracellular milieu of cancer cells - temperature, pH, availability of nutrients. On the one hand, these changes represent a consequence of the deregulated growth of the tumor tissue; on the other hand, they can be a source of selection pressure, which allows the emergence of resistant and aggressive tumor cell populations. Description of the proteostatic apparatus components and the mechanism of their involvement in the tumor tissue development is provided in this review article. AIM This review focuses on the description of two causally linked groups of proteostatic events; their mutual coordination is crucial to the process of tumor cell and by extension the entire tumor tissue response to environmental and internal stress factors. The first group of these processes is represented by the "executory" role of molecular chaperones from HSP70, HSP90 and so-called small molecular chaperone protein families. These proteins are involved in maintaining stability of cellular proteins essential for proliferation, apoptosis, senescence, migration and phenotypic plasticity of tumor cells. The second group of the described processes comprises the posttranslational control of the "systemic" role of the transcription factor HSF1 in regulating the gene expression of molecular chaperones and other genes specifically regulated by this transcription factor in the tumor and stromal cells.Key words: molecular chaperones - heat-shock factor 1 - cancer - protein homeostasisThis work was supported by the project MEYS - NPS I - LO1413.The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers.Submitted: 15. 5. 2016Accepted: 25. 5. 2016.
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Pastorek M, Müller P, Vojtěšek B. [Impact of HSP90 Inhibition on Viability and Cell Cycle in Relation to p53 Status]. Klin Onkol 2016; 29 Suppl 4:40-45. [PMID: 27846719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Chaperone system inhibition is a recent promising strategy for cancer treatment that exploits increased metabolic needs required for rapid proliferation as well as higher level of proteotoxic stress in neoplastic cells. Chaperone HSP90 plays a key role in proper folding of many de novo synthesized proteins, so-called clients, including tumor suppressor p53 which is commonly mutated in majority of cancers. Aim of this work was therefore to understand the impact of HSP90 inhibition by NVP-AUY922 on breast cancer cell lines with wild-type and mutated p53. METHODS Flow cytometry was used to analyze cell viability by fluorescein diacetate assay and changes in cell cycle. Western blotting was used to analyze expression of p53 and p21 proteins. RESULTS Analysis of cell viability after HSP90 inhibition revealed higher sensitivity of cell line with wild-type p53. Cell cycle analysis then showed that both cell lines undergo increase in G2/M block of the cell cycle, but wild-type cell line had also substantial decrease in proliferative capacity of treated cells. We also observed increased expression of negative cell cycle regulator p21 in cell line with wild-type p53. CONCLUSIONS Since p21 is directly regulated by p53, our results suggest that mutation status of p53 can be important factor in treatment of breast cancer cells by HSP90 chaperone inhibition and that wild-type p53 can increase sensitivity to HSP90 inhibition.Key words: breast cancer - cell cycle - chaperone - HSP90 - TP53 - p21 - p53 - NVP-AUY922This work was supported by the project MEYS - NPS I - LO1413.The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers.Submitted: 6. 5. 2016Accepted: 17. 5. 2016.
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Suske A, Pöschke A, Müller P, Wöber S, Staszyk C. Infundibula of equine maxillary cheek teeth: Part 2: Morphological variations and pathological changes. Vet J 2015; 209:66-73. [PMID: 26831172 DOI: 10.1016/j.tvjl.2015.11.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 10/02/2015] [Accepted: 11/27/2015] [Indexed: 11/17/2022]
Abstract
Incomplete cemental filling of the infundibula of equine maxillary cheek teeth (CT) is a common feature. Depending on the extent of the defect, three stages of infundibular decay have been suggested. However, histomorphological criteria to identify non-pathological abnormalities and destructive changes have not been defined. Six hundred and eighty eight CT with no evidence of dental diseases and 55 diseased permanent, fully erupted maxillary CT were evaluated on a macroscopic level by assessing the occlusal surface and horizontal sections, including porphyrin assays to detect residual blood within the infundibular cementum. Selected specimens were investigated on a microscopic level using routine and immunohistological staining methods to identify possible routes for the spread of infectious agents from the infundibulum into the endodontic system. Infundibular cemental hypoplasia was defined as a non-pathological developmental abnormality and was detected in >50% of CT with no evidence of dental diseases and in >70% of diseased CT. The first molar (Triadan 09) showed the highest prevalence (75%) of infundibular cemental hypoplasia. The mesial infundibulum was more often affected than the distal infundibulum. Infundibular erosion was considered as the most appropriate term to describe destructive infundibular changes. Infundibular erosion was present in <6% of CT with no evidence of dental diseases, but was detected in >27% of diseased teeth, always accompanied by endodontic disease. This suggests that teeth affected by infundibular cemental hypoplasia are prone to destructive erosion, which possibly leads to endodontic disease. Morphological factors that supplement this ethological hypothesis were described. In 74% of infundibula residual blood was identified, although no vital blood vessels were detected. It is assumed that this content of blood remained in the ample infundibular cemental blood system after tooth eruption and creates a favorable environment for microbial growth. The infundibular enamel was characterised by numerous infoldings to variable degrees and depths. In certain areas focal enamel aplasia was observed. These morphological features might contribute to microbiological settlement and spread of infectious agents through the infundibular wall into the endodontic system.
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Affiliation(s)
- A Suske
- Institute of Veterinary-Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Justus Liebig University Giessen, Frankfurter Str. 98, 35390 Giessen, Germany
| | - A Pöschke
- Institute of Veterinary-Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Justus Liebig University Giessen, Frankfurter Str. 98, 35390 Giessen, Germany
| | - P Müller
- Large Animal Clinic for Theriogenology and Ambulatory Services, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, Leipzig 04103, Germany
| | - S Wöber
- Institute of Veterinary-Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Justus Liebig University Giessen, Frankfurter Str. 98, 35390 Giessen, Germany; Institute for General Zoology and Developmental Biology, Justus Liebig University Giessen, Stephanstr. 24, 35390 Giessen, Germany
| | - C Staszyk
- Institute of Veterinary-Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Justus Liebig University Giessen, Frankfurter Str. 98, 35390 Giessen, Germany.
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Krejčí A, Müller P, Vojtěšek B. [Bioinformatics and Next -generation Sequencing]. Klin Onkol 2015; 28 Suppl 2:2S91-6. [PMID: 26374164 DOI: 10.14735/amko20152s91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Next-generation sequencing technologies are currently well-established in the research field and progressively find their way towards clinical applications. Sequencers produce vast amounts of data and therefore bioinformatics methods are needed for processing. Without computational methods, sequencing would not be able to produce relevant biological information. In this review, we introduce the basics of common NGS-related bioinformatics methods used in oncological research. We also state some of the common problems complicating data processing and interpretation of the results.
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Růčková E, Müller P, Vojtěšek B. [Recombinant Antibodies and Their Employment in Cancer Therapy]. Klin Onkol 2015; 28 Suppl 2:2S52-9. [PMID: 26374159 DOI: 10.14735/amko20152s52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Development of recombinant therapeutic antibodies is recently one of the fastest growing disciplines of applied biomedical research. Recombinant monoclonal antibodies are increasingly applied in biological therapy of many serious human diseases and are currently an irreplaceable part of a comprehensive cancer therapy. First mouse therapeutic antibodies had only limited applicability due to the strong immune response; however, technological advances enabled engineering of antibodies with increased specificity and efficacy, and on the other hand with reduced adverse effects due to lower antigenicity. This review provides a summary of knowledge about recombinant therapeutic antibodies, their mechanism of action and approaches how to improve their efficacy.
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Abstract
One of the most prominent defense mechanisms of cells undergoing stress is the Nrf2-Keap1 signaling pathway. After exposure to either carcinogens or toxic compounds inducing oxidative stress, attacked cells react by release of Keap1 from the Nrf2-Keap1 complex. Freeing Nrf2 from the complex allows its translocation into the nucleus, thus enabling start of the transcriptional program of cytoprotective genes. Therefore, induction of Nrf2 by chemopreventive compounds may show potential in cancer prevention. But while it protects normal cells, increased activity of Nrf2 signaling pathway also facilitates cancer progression and protects neoplastic cells from therapeutic agents. Increased expression and subsequent accumulation of Nrf2 contributes to acquired drug resistance and is often associated with worse prognosis. Knowing both faces of Nrf2 signaling pathway is thus relevant not only for basic research but has also substantial clinical implications.
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Furlano RI, Basek P, Müller P, Bieli C, Braegger CP, Barben J, Hammer J, Moeller A, Trachsel D. Pulmonary Function Test Abnormalities in Pediatric Inflammatory Bowel Disease. Respiration 2015; 90:279-86. [PMID: 26302766 DOI: 10.1159/000435961] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 06/11/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Pulmonary involvement in adult patients with inflammatory bowel disease (IBD) seems more common than previously appreciated. Its prevalence and development over time in pediatric IBD patients are largely unknown. OBJECTIVES The aim was to study lung function including fraction of exhaled nitric oxide (FeNO) and transfer capacity for carbon monoxide (TLCO) in pediatric IBD patients and to describe the longitudinal development in a subset of patients with lung function abnormalities. METHODS Sixty-six measurements were made in 48 IBD patients (30 patients with Crohn's disease and 18 with ulcerative colitis) and 108 matched controls. Patients with abnormal TLCO or elevated residual volume/total lung capacity (RV/TLC) ratios were invited for a follow-up. Statistical comparisons were made by nonparametric tests and ANOVA. RESULTS TLCO was decreased in IBD patients [median: 88% predicted (interquartile range, IQR, 22) vs. 99% predicted (IQR 19) in controls]. RV/TLC ratios were mildly elevated in patients with ulcerative colitis [32% (IQR 9) vs. 27% (IQR 8) in controls], and maximum expiratory flows at 50 and 25% of vital capacity were mildly reduced in patients with Crohn's disease. FeNO and disease activity did not correlate with lung function abnormalities. Abnormalities did not consistently persist over a median follow-up period of 34 months. CONCLUSIONS This study supports evidence that variable and fluctuating pulmonary involvement also occurs in pediatric IBD patients. Its clinical significance is unclear.
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Affiliation(s)
- Raoul I Furlano
- Division of Pediatric Gastroenterology, University of Basel Children's Hospital, Basel, Switzerland
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Bessems GJ, Dragomirescu V, Müller P, Raps I, Hockwin O. Protein-chemical analysis of lens sections obtained by a new sectioning device. Dev Ophthalmol 2015; 17:123-7. [PMID: 2792509 DOI: 10.1159/000417015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- G J Bessems
- Department of Experimental Ophthalmology, University of Bonn, FRG
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Müller P, Theisgen S, Schirbel A, Sbiera S, Haralampiev I, Fassnacht M, Huster D, Kroiß M. Mitotane directly interacts with lipid membranes and alters membrane structure and dynamics. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1547700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Niemeyer P, Schweigler K, Grotejohann B, Maurer J, Angele P, Aurich M, Becher C, Fay J, Feil R, Fickert S, Fritz J, Hoburg A, Kreuz P, Kolombe T, Laskowski J, Lützner J, Marlovits S, Müller P, Niethammer T, Pietschmann M, Ruhnau K, Spahn G, Tischer T, Zinser W, Albrecht D. Das KnorpelRegister DGOU zur Erfassung von Behandlungsergebnissen nach Knorpeloperationen: Erfahrungen nach 6 Monaten und erste epidemiologische Daten. Z Orthop Unfall 2015; 153:67-74. [DOI: 10.1055/s-0034-1383222] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- P. Niemeyer
- Department für Orthopädie und Traumatologie, Universitätsklinikum Freiburg
| | - K. Schweigler
- Department für Orthopädie und Traumatologie, Universitätsklinikum Freiburg
| | | | - J. Maurer
- Studienzentrum, Universitätsklinikum Freiburg
| | - P. Angele
- Sportorthopaedicum Regensburg/Straubing, Straubing
| | - M. Aurich
- Klinik für Orthopädische Chirurgie, Unfall- und Handchirurgie, Kliniken Leipziger Land, Borna
| | - C. Becher
- Orthopädische Klinik im Annastift, Medizinische Hochschule Hannover
| | - J. Fay
- Unfall- und Arthroskopische Chirurgie, Lubinus-Clinicum Kiel
| | - R. Feil
- Klinik für Unfallchirurgie, Orthopädie und Handchirurgie, Kath. Marienkrankenhaus, Hamburg
| | - S. Fickert
- Sportorthopaedicum Regensburg/Straubing, Straubing
| | - J. Fritz
- Orthopädisch-Chirurgisches Zentrum, Tübingen, Deutschland
| | - A. Hoburg
- Charité Berlin, Klinik für Orthopädische, Unfall- und Wiederherstellungschirurgie
| | - P. Kreuz
- Universitätskllinikum Rostock, Orthopädische Klinik und Poliklinik
| | - T. Kolombe
- Klinik für Orthopädie und Unfallchirurgie, DRK Krankenhaus Luckenwalde
| | - J. Laskowski
- Klinik für Unfallchirurgie, Orthopädie und Handchirurgie, Kath. Marienkrankenhaus, Hamburg
| | - J. Lützner
- UniversitätsCentrum für Orthopädie und Unfallchirurgie, Universitätsklinikum Dresden, Deutschland
| | - S. Marlovits
- Klinik für Unfallchirurgie, Medizinische Universität Wien, Österreich
| | - P. Müller
- Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Ludwig-Maximilians-Universität, München
| | - T. Niethammer
- Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Ludwig-Maximilians-Universität, München
| | - M. Pietschmann
- Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Ludwig-Maximilians-Universität, München
| | - K. Ruhnau
- Fachklinik für Orthopädie und Orthopädische Chirurgie, Viktoriaklinik Bochum
| | - G. Spahn
- Praxisklinik für Orthopädie und Unfallchirurgie, Eisenach
| | - T. Tischer
- Universitätskllinikum Rostock, Orthopädische Klinik und Poliklinik
| | - W. Zinser
- Klinik für Orthopädie und Unfallchirurgie mit Sportmedizin und Alterstraumatologie, St. Vinzenz Hospital, Dinslaken
| | - D. Albrecht
- Chirurgie, Klinik im Kronprinzenbau, Reutlingen
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Kukuk K, Klingner K, Peille A, Müller P, Zipelius A, Schüler J. 16 Allografting improves the feasibility of genetically engineered mouse models (GEMM) for anti-cancer drug development. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70142-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kirchner J, Broll M, Murach C, Müller P, Pomjanski N, Biesterfeld S, Liermann D, Kickuth R. Endobronchial Ultrasound-guided Transbronchial Needle Aspiration in Anthracosis of Mediastinal Lymph Nodes: Correlation with Computed Tomography Findings. Hong Kong J Radiol 2014. [DOI: 10.12809/hkjr1413225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Göring M, Seifert A, Schreiter K, Müller P, Spange S. A non-aqueous procedure to synthesize amino group bearing nanostructured organic-inorganic hybrid materials. Chem Commun (Camb) 2014; 50:9753-6. [PMID: 25023389 DOI: 10.1039/c4cc03640a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amino-functionalized organic-inorganic hybrid materials with a narrow distributed nanostructure of 2-4 nm in size were obtained by means of a template-free and non-aqueous procedure. Simultaneous twin polymerization of novel amino group containing twin monomers with 2,2'-spirobi[4H-1,3,2-benzodioxasiline] has been applied for this purpose. The amino groups of the organic-inorganic hybrid material are useful for post derivatization.
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Affiliation(s)
- M Göring
- Department of Polymer Chemistry, Institute of Chemistry, Technische Universität Chemnitz, Strasse der Nationen 62, D-09111 Chemnitz, Germany.
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Abstract
The understanding of abdominal vascular anatomy and its anatomical variations is of considerable importance in upper abdominal surgery. We present the rare finding of a common hepatic artery arising from the superior mesenteric artery and passing anterior to the pancreatic gland in a patient undergoing a pancreaticoduodenectomy.
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Rajni Swamy V, Gunasekaran P, Krishnakumar RV, Srinivasan N, Müller P. Crystal structure of [4-(2-meth-oxy-phen-yl)-3-methyl-1-phenyl-6-tri-fluoro-methyl-1H-pyrazolo-[3,4-b]pyridin-5-yl](thio-phen-2-yl)methanone. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o974-5. [PMID: 25309288 PMCID: PMC4186079 DOI: 10.1107/s1600536814017437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 07/29/2014] [Indexed: 11/11/2022]
Abstract
The title compound, C26H18F3N3O2S, a 2-meth-oxy-substituted derivative, is closely related to its 4-methyl- and 4-chloro-substituted analogues and yet displays no structural relationships with them. The thio-phene ring is disorder free and the -CF3 group exhibits disorder, respectively, in contrast and similar to that observed in the 4-methyl- and 4-chloro-substituted derivatives. The torsion angle which defines the twist of the thio-phene ring is -69.6 (2)° (gauche) in the title compound, whereas it is anti-clinal in the 4-methyl- and 4-chloro-substituted derivatives, with respective values of 99.9 (2) and 99.3 (2)°. The absence of disorder in the thio-phene ring facilitates one of its ring C atoms to participate in the lone inter-molecular C-H⋯O hydrogen bond present in the crystal, leading to a characteristic C(5) chain graph-set motif linking mol-ecules related through glides along [010]. An intra-moleculr C-H⋯N hydrogen bond also occurs.
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Affiliation(s)
- V. Rajni Swamy
- Department of Physics, Thiagarajar College, Madurai 625 009, India
| | - P. Gunasekaran
- School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | | | - N. Srinivasan
- Department of Physics, Thiagarajar College, Madurai 625 009, India
| | - P. Müller
- X-Ray Diffraction Facility, MIT Department of Chemistry, 77 Massachusetts Avenue, Building 2, Room 325, Cambridge, MA, 02139-4307, USA
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84
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Müller P, Lorber KE, Mischitz R, Weiß C. Implementation of fluidized granulated iron reactors in a chromate remediation process. Sci Total Environ 2014; 485-486:748-754. [PMID: 24530188 DOI: 10.1016/j.scitotenv.2014.01.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 01/26/2014] [Accepted: 01/27/2014] [Indexed: 05/26/2023]
Abstract
A new approach concerning in-situ remediation on source ('hot-spot') decontamination of a chromate damage in connection with an innovative pump-and-treat-technique has been developed. Iron granulates show significant higher reduction rates, using fluidized bed conditions, than a literature study with a fixed bed installation of small-sized iron granules. First results from an abandoned tannery site concerning injections of sodium dithionite as a chromate reductant for the vadose zone in combination with a pump-and-treat-method, allying the advantages of granulated zero valent iron (ZVI), are reported. Reduction amounts of chromate have been found up to 88% compared with initial values in the soil after a soil water exchange of 8 pore volumes within 2.5 months. Chromate concentrations in the pumped effluent have been reduced to under the detection limit of 0.005 mg/L by treatment with ZVI in the pilot plant.
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Affiliation(s)
- P Müller
- Department of Environmental and Energy Process Engineering, Chair of Waste Treatment Technologies and Landfilling, Montanuniversitaet Leoben, 8700 Leoben, Austria.
| | - K E Lorber
- Department of Environmental and Energy Process Engineering, Chair of Waste Treatment Technologies and Landfilling, Montanuniversitaet Leoben, 8700 Leoben, Austria.
| | - R Mischitz
- Department of Environmental and Energy Process Engineering, Chair of Waste Treatment Technologies and Landfilling, Montanuniversitaet Leoben, 8700 Leoben, Austria
| | - C Weiß
- Department of Environmental and Energy Process Engineering, Chair of Process Technology and Industrial Environmental Protection, Montanuniversitaet Leoben, 8700 Leoben, Austria.
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85
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Durech M, Trčka F, Vojtěšek B, Müller P. [Methods for analysis of protein-protein and protein-ligand interactions]. Klin Onkol 2014; 27 Suppl 1:S75-81. [PMID: 24945541 DOI: 10.14735/amko20141s75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In order to maintain cellular homeostasis, cellular proteins coexist in complex and variable molecular assemblies. Therefore, understanding of major physiological processes at molecular level is based on analysis of protein-protein interaction networks. Firstly, composition of the molecular assembly has to be qualitatively analyzed. In the next step, quantitative bio-chemical properties of the identified protein-protein interactions are determined. Detailed information about the protein-protein interaction interface can be obtained by crystallographic methods. Accordingly, the insight into the molecular architecture of these protein-protein complexes allows us to rationally design new synthetic compounds that specifically influence various physiological or pathological processes by targeted modulation of protein interactions. This review is focused on description of the most used methods applied in both qualitative and quantitative analysis of protein-protein interactions. Co- immunoprecipitation and affinity co- precipitation are basic methods designed for qualitative analysis of protein binding partners. Further bio-chemical analysis of the interaction requires definition of kinetic and thermodynamic parameters. Surface plasmon resonance (SPR) is used for description of affinity and kinetic profile of the interaction, fluorescence polarization (FP) method for fast determination of inhibition potential of inhibitors and isothermal titration calorimetry (ITC) for definition of thermodynamic parameters of the interaction (G, H and S). Besides the importance of uncovering the molecular basis of protein interactions for basic research, the same methodological approaches open new possibilities in rational design of novel therapeutic agents.
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86
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Perkampus HH, Müller P. Dipolmomente der 1.2-Di-(pyridyl)-äthene / Dipole Moments of 1,2-Dipyridyl-ethylenes. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1970-0905] [Citation(s) in RCA: 6] [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] [Indexed: 11/15/2022]
Abstract
The dipole moments of the six isomeric trans-1,2-dipyridyl-ethylenes were measured in benzene at room temperature. As some dipyridyl-ethylenes can exist in several different conformations the dipole moments are mean values for all conformations. It is shown that the dipole moments of the individual conformations can be computed of the dipole moment vectors of the pyridine nuclei.
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Affiliation(s)
- H.-H. Perkampus
- Institut für Physikalische Chemie der Universität Düsseldorf
| | - P. Müller
- Institut für Physikalische Chemie der Universität Düsseldorf
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87
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Abstract
Der Diffusionskoeffizient D von HT-, DT- und T2-Spuren in H2 und D2 bei 24 °C und 1 Atm. wurde gemessen. Es zeigen sich Abweichungen vom D ∼ µ-½-Gesetz (µ = reduzierte Masse der Diffusionspartner), sie sind aber zum Teil erheblich kleiner als nach anderen diesjährigen Publikationen. Durch eine Ausgleichsrechnung ergeben sich aus unseren 6 gemessenen D-Werten die drei Koeffizienten der Darstellung
2(õ D)III =0,111 mIII + 0,049(m13
2—m24
2) +0,083(mAC
2+mBD
2 —mAC
2—mbd
2) Dabei ist generell xik = (xi —xk) / (xi+xk). I und II bezeichnen Gemische und 1, 2, 3 und 4 bezeichnen Moleküle. Für die Massen gilt m1=mA+mC, m3=mB+mD, m2=ma+mc, m4=mb+md, mI=m1+m3, mII=m2+m4. Im Zusammenhang mit den Abweichungen vom D ∼ μ-½-Gesetz werden die aus den Molekülspektren berechneten Unterschiede der Kernabstände, die Aussagen des Modells der rauhen Kugeln und die Beiträge der zweiten Näherung der kinetischen Gastheorie diskutiert.
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Affiliation(s)
| | - P. Müller
- Max-Planck-Institut für Chemie (Otto-Hahn-Institut), Mainz
| | - A. Klemm
- Max-Planck-Institut für Chemie (Otto-Hahn-Institut), Mainz
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88
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Abstract
Dipole moments of the ten isomeric phenanthrolines are presented and discussed shortly. They could be computed in a close approximation from the dipole moment vectors of the individual pyridine nuclei. Dipole moments calculated by means of the CNDO/2-method are in agreement with the experimental data.
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Affiliation(s)
- H.-H. Perkampus
- Institut für Physikalische Chemie der Universität Düsseldorf
| | - P. Müller
- Institut für Physikalische Chemie der Universität Düsseldorf
| | - J. Knop
- Institut für Physikalische Chemie der Universität Düsseldorf
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89
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Mothes K, Schütte HR, Müller P, Ardenne MV, Tümmler R. Notizen: m-Tyrosin, eine neue Aminosäure aus dem Milchsaft von Euphorbia Myrsinites L. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1964-1219] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- K. Mothes
- Deutsche Akademie der Wissenschaften zu Berlin Institut für Biochemie der Pflanzen, Halle/Saale und Forschungsinstitut Manfred v. Ardenne, Dresden — Weißer Hirsch
| | - H. R. Schütte
- Deutsche Akademie der Wissenschaften zu Berlin Institut für Biochemie der Pflanzen, Halle/Saale und Forschungsinstitut Manfred v. Ardenne, Dresden — Weißer Hirsch
| | - P. Müller
- Deutsche Akademie der Wissenschaften zu Berlin Institut für Biochemie der Pflanzen, Halle/Saale und Forschungsinstitut Manfred v. Ardenne, Dresden — Weißer Hirsch
| | - M. v. Ardenne
- Deutsche Akademie der Wissenschaften zu Berlin Institut für Biochemie der Pflanzen, Halle/Saale und Forschungsinstitut Manfred v. Ardenne, Dresden — Weißer Hirsch
| | - R. Tümmler
- Deutsche Akademie der Wissenschaften zu Berlin Institut für Biochemie der Pflanzen, Halle/Saale und Forschungsinstitut Manfred v. Ardenne, Dresden — Weißer Hirsch
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90
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Müller P, Schütte HR. m-Hydroxyphenylglycin und 3.5-Dihydroxyphenylglycin, zwei neue Aminosäuren aus dem Latex von Euphorbia helioscopia L. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1968-0516] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Aus dem Latex des annuellen Ackerunkrautes Euphorbia helioscopia L. konnten zwei unbekannte, proteinfremde Aminosäuren isoliert werden. Durch chemische Abbauversuche, Auswertung von Spektren und Synthese wurden die Verbindungen als m-Hydroxyphenylglycin und 3.5-Dihydroxyphenylglycin charakterisiert.
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Affiliation(s)
- P. Müller
- Institut für Biochemie der Pflanzen der Deutschen Akademie der Wissenschaften, Halle (Saale)
| | - H. R. Schütte
- Institut für Biochemie der Pflanzen der Deutschen Akademie der Wissenschaften, Halle (Saale)
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91
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Affiliation(s)
- Christian Kahlert
- Kantonsspital St. Gallen, Rorschacher Str. 95, 9007, St. Gallen, SWITZERLAND;
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92
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Cheynis F, Leroy F, Ranguis A, Detailleur B, Bindzi P, Veit C, Bon W, Müller P. Combining low-energy electron microscopy and scanning probe microscopy techniques for surface science: development of a novel sample-holder. Rev Sci Instrum 2014; 85:043705. [PMID: 24784616 DOI: 10.1063/1.4871437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We introduce an experimental facility dedicated to surface science that combines Low-Energy Electron Microscopy/Photo-Electron Emission Microscopy (LEEM/PEEM) and variable-temperature Scanning Probe Microscopy techniques. A technical challenge has been to design a sample-holder that allows to exploit the complementary specifications of both microscopes and to preserve their optimal functionality. Experimental demonstration is reported by characterizing under ultrahigh vacuum with both techniques: Au(111) surface reconstruction and a two-layer thick graphene on 6H-SiC(0001). A set of macros to analyze LEEM/PEEM data extends the capabilities of the setup.
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Affiliation(s)
- F Cheynis
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - F Leroy
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - A Ranguis
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - B Detailleur
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - P Bindzi
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - C Veit
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - W Bon
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - P Müller
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
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93
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Abstract
We investigate wrinkling of two-dimensional random and triangular semiflexible polymer networks under shear. Both types of semiflexible networks exhibit wrinkling above a small critical shear angle, which scales with an exponent of the bending modulus between 1.9 and 2.0. Random networks exhibit hysteresis at the wrinkling threshold. Wrinkling lowers the total elastic energy by up to 20% and strongly affects the elastic properties of all semiflexible networks such as the crossover between bending and stretching dominated behavior. In random networks, we also find evidence for metastable wrinkled configurations. While the disordered microstructure of random networks affects the scaling behavior of wrinkle amplitudes, it has little effect on wrinkle wavelength. Therefore, wrinkles represent a robust, microstructure-independent assay of shear strain or elastic properties.
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Affiliation(s)
- Pascal Müller
- Physics Department, TU Dortmund University, 44221 Dortmund, Germany
| | - Jan Kierfeld
- Physics Department, TU Dortmund University, 44221 Dortmund, Germany
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94
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Pawle RH, Haas TE, Müller P, Thomas III SW. Twisting and piezochromism of phenylene-ethynylenes with aromatic interactions between side chains and main chains. Chem Sci 2014. [DOI: 10.1039/c4sc01466a] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper describes a series of three-ring phenylene-ethynylenes (PEs) in which specific, non-covalent arene–arene interactions control conformation in the solid-state.
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Affiliation(s)
- R. H. Pawle
- Department of Chemistry
- Tufts University
- Medford, USA
| | - T. E. Haas
- Department of Chemistry
- Tufts University
- Medford, USA
| | - P. Müller
- Department of Chemistry
- Massachusetts Institute of Technology
- Cambridge, USA
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95
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96
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Deneke T, Israel C, Krug J, Nentwich K, Müller P, Mügge A, Schade A. Indikationen zur Katheterablation bei ventrikulärer Tachykardie. Dtsch Med Wochenschr 2013; 138:1952-6. [DOI: 10.1055/s-0033-1349563] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- T. Deneke
- Herz- und Gefäßklinik Bad Neustadt, Klinik für Kardiologie/interventionelle Elektrophysiologie
| | - C. Israel
- Ev. Krankenhaus Bielefeld, Klinik für Innere Medizin-Kardiologie, Diabetologie und Nephrologie
| | - J. Krug
- Herz- und Gefäßklinik Bad Neustadt, Klinik für Kardiologie/interventionelle Elektrophysiologie
| | - K. Nentwich
- Herz- und Gefäßklinik Bad Neustadt, Klinik für Kardiologie/interventionelle Elektrophysiologie
| | - P. Müller
- Herz- und Gefäßklinik Bad Neustadt, Klinik für Kardiologie/interventionelle Elektrophysiologie
| | - A. Mügge
- Medizinische Klinik II, Klinik für Kardiologie, St. Josef-Hospital, Ruhr-Universität Bochum
| | - A. Schade
- Herz- und Gefäßklinik Bad Neustadt, Klinik für Kardiologie/interventionelle Elektrophysiologie
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97
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Herrmann S, Schwender H, Ickstadt K, Müller P. A Bayesian changepoint analysis of ChIP-Seq data of Lamin B. Biochim Biophys Acta 2013; 1844:138-44. [PMID: 24036208 DOI: 10.1016/j.bbapap.2013.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 07/19/2013] [Accepted: 09/01/2013] [Indexed: 11/17/2022]
Abstract
The spatial organisation of the chromosomes in the nucleus is influenced by chromatin regions binding to the nucleic lamina, i.e., the inner part of the nucleic envelope. To investigate the architecture of chromosomes in the interphase nucleus, it is thus of high interest to detect such chromatin segments. This goal can be achieved by considering the fibrous protein Lamin B as a surrogate, since regions of high abundance of Lamin B can indicate chromatin segments attached to the nucleic lamina. We analyse ChIP-Seq (Chromatin-Immunoprecipitation Sequencing) data from an experiment that is designed to record Lamin B abundance. We introduce a Bayesian segmentation procedure in which a Markov Chain Monte Carlo (MCMC) algorithm is used for inference about the desired segmentation. The procedure is based on a Bayesian hierarchical model. Inference allows the distinction between regions of high versus low levels of Lamin B, and therefore, gives an insight into the binding of the chromatin to the nucleic envelope. An implementation of this approach is available in the statistical software environment R. This article is part of a special issue entitled: Computational proteomics in the post-identification era. Guest Editors: Martin Eisenacher and Christian Stephan.
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Affiliation(s)
- S Herrmann
- Faculty of Statistics, TU Dortmund University, Dortmund, Germany
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98
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99
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Schug M, Huwer J, Kurz C, Müller P, Eschner J. Heralded photonic interaction between distant single ions. Phys Rev Lett 2013; 110:213603. [PMID: 23745873 DOI: 10.1103/physrevlett.110.213603] [Citation(s) in RCA: 3] [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: 02/27/2013] [Indexed: 06/02/2023]
Abstract
We establish a heralded interaction between two remotely trapped single (40)Ca(+) ions through the exchange of single photons. In the sender ion, we release single photons with a controlled temporal shape on the P(3/2) to D(5/2) transition and transmit them to the distant receiver ion. Individual absorption events in the receiver ion are detected by quantum jumps. For continuously generated photons, the absorption reduces significantly the lifetime of the long-lived D(5/2) state. For triggered single-photon transmission, we observe a coincidence between the emission at the sender and quantum jump events at the receiver.
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Affiliation(s)
- M Schug
- Universität des Saarlandes, Experimentalphysik, Campus E2 6, 66123 Saarbrücken, Germany.
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100
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Müller P. Testen Sie Ihr Fachwissen. Akt Dermatol 2013. [DOI: 10.1055/s-0032-1309614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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