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Unnikrishnan G, Ilzhöfer P, Scholz A, Hölzl C, Götzelmann A, Gupta RK, Zhao J, Krauter J, Weber S, Makki N, Büchler HP, Pfau T, Meinert F. Coherent Control of the Fine-Structure Qubit in a Single Alkaline-Earth Atom. Phys Rev Lett 2024; 132:150606. [PMID: 38682979 DOI: 10.1103/physrevlett.132.150606] [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] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/11/2024] [Indexed: 05/01/2024]
Abstract
We report on the first realization of a novel neutral atom qubit encoded in the spin-orbit coupled metastable states ^{3}P_{0} and ^{3}P_{2} of a single ^{88}Sr atom trapped in an optical tweezer. Raman coupling of the qubit states promises rapid single-qubit rotations on par with the fast Rydberg-mediated two-body gates. We demonstrate preparation, readout, and coherent control of the qubit. In addition to driving Rabi oscillations bridging an energy gap of more than 17 THz using a pair of phase-locked clock lasers, we also carry out Ramsey spectroscopy to extract the transverse qubit coherence time T_{2}. When the tweezer is tuned into magic trapping conditions, which is achieved in our setup by tuning the tensor polarizability of the ^{3}P_{2} state via an external control magnetic field, we measure T_{2}=1.2 ms. A microscopic quantum mechanical model is used to simulate our experiments including dominant noise sources. We identify the main constraints limiting the observed coherence time and project improvements to our system in the immediate future. Our Letter opens the door for a so-far-unexplored qubit encoding concept for neutral atom-based quantum computing.
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Affiliation(s)
- G Unnikrishnan
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - P Ilzhöfer
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - A Scholz
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - C Hölzl
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - A Götzelmann
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - R K Gupta
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - J Zhao
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - J Krauter
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - S Weber
- Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - N Makki
- Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - H P Büchler
- Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - T Pfau
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - F Meinert
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Koch B, Shehata M, Müller-Ruttloff C, Gouda SA, Wetzstein N, Patyna S, Scholz A, Schmid T, Dietrich U, Münch C, Ziebuhr J, Geiger H, Martinez-Sobrido L, Baer PC, Mostafa A, Pleschka S. Influenza A virus replicates productively in primary human kidney cells and induces factors and mechanisms related to regulated cell death and renal pathology observed in virus-infected patients. Front Cell Infect Microbiol 2024; 14:1363407. [PMID: 38590437 PMCID: PMC10999593 DOI: 10.3389/fcimb.2024.1363407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 02/29/2024] [Indexed: 04/10/2024] Open
Abstract
Introduction Influenza A virus (IAV) infection can cause the often-lethal acute respiratory distress syndrome (ARDS) of the lung. Concomitantly, acute kidney injury (AKI) is frequently noticed during IAV infection, correlating with an increased mortality. The aim of this study was to elucidate the interaction of IAV with human kidney cells and, thereby, to assess the mechanisms underlying IAV-mediated AKI. Methods To investigate IAV effects on nephron cells we performed infectivity assays with human IAV, as well as with human isolates of either low or highly pathogenic avian IAV. Also, transcriptome and proteome analysis of IAV-infected primary human distal tubular kidney cells (DTC) was performed. Furthermore, the DTC transcriptome was compared to existing transcriptomic data from IAV-infected lung and trachea cells. Results We demonstrate productive replication of all tested IAV strains on primary and immortalized nephron cells. Comparison of our transcriptome and proteome analysis of H1N1-type IAV-infected human primary distal tubular cells (DTC) with existing data from H1N1-type IAV-infected lung and primary trachea cells revealed enrichment of specific factors responsible for regulated cell death in primary DTC, which could be targeted by specific inhibitors. Discussion IAV not only infects, but also productively replicates on different human nephron cells. Importantly, multi-omics analysis revealed regulated cell death as potential contributing factor for the clinically observed kidney pathology in influenza.
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Affiliation(s)
- Benjamin Koch
- Department of Internal Medicine 4, Nephrology, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Mahmoud Shehata
- Center of Scientific Excellence for Influenza Viruses, National Research Centre (NRC), Cairo, Egypt
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany
| | - Christin Müller-Ruttloff
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany
- German Center for Infection Research (DZIF), Partner Site Giessen, Giessen, Germany
| | - Shady A. Gouda
- Institute for Biochemistry II, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Nils Wetzstein
- Department of Internal Medicine 2, Infectious Diseases, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Sammy Patyna
- Department of Internal Medicine 4, Nephrology, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Anica Scholz
- Institute of Biochemistry I, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Tobias Schmid
- Institute of Biochemistry I, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Ursula Dietrich
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt am Main, Germany
| | - Christian Münch
- Institute for Biochemistry II, Goethe University Frankfurt, Frankfurt am Main, Germany
- Frankfurt Cancer Institute (FCI), Frankfurt am Main, Germany
- Cardio-Pulmonary Institute, Frankfurt am Main, Germany
| | - John Ziebuhr
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany
- German Center for Infection Research (DZIF), Partner Site Giessen, Giessen, Germany
| | - Helmut Geiger
- Department of Internal Medicine 4, Nephrology, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Luis Martinez-Sobrido
- Texas Biomedical Research Institute, Disease Intervention & Prevention (DIP) and Host Pathogen Interactions (HPI) Programs, San Antonio, TX, United States
| | - Patrick C. Baer
- Department of Internal Medicine 4, Nephrology, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Ahmed Mostafa
- Center of Scientific Excellence for Influenza Viruses, National Research Centre (NRC), Cairo, Egypt
- Texas Biomedical Research Institute, Disease Intervention & Prevention (DIP) and Host Pathogen Interactions (HPI) Programs, San Antonio, TX, United States
| | - Stephan Pleschka
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany
- German Center for Infection Research (DZIF), Partner Site Giessen, Giessen, Germany
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Han Y, Mora J, Huard A, da Silva P, Wiechmann S, Putyrski M, Schuster C, Elwakeel E, Lang G, Scholz A, Scholz T, Schmid T, de Bruin N, Billuart P, Sala C, Burkhardt H, Parnham MJ, Ernst A, Brüne B, Weigert A. IL-38 Ameliorates Skin Inflammation and Limits IL-17 Production from γδ T Cells. Cell Rep 2020; 27:835-846.e5. [PMID: 30995480 DOI: 10.1016/j.celrep.2019.03.082] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [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: 07/02/2018] [Revised: 03/04/2019] [Accepted: 03/21/2019] [Indexed: 01/25/2023] Open
Abstract
Interleukin-38 (IL-38) is a cytokine of the IL-1 family with a role in chronic inflammation. However, its main cellular targets and receptors remain obscure. IL-38 is highly expressed in the skin and downregulated in psoriasis patients. We report an investigation in cellular targets of IL-38 during the progression of imiquimod-induced psoriasis. In this model, IL-38 knockout (IL-38 KO) mice show delayed disease resolution with exacerbated IL-17-mediated inflammation, which is reversed by the administration of mature IL-38 or γδ T cell-receptor-blocking antibodies. Mechanistically, X-linked IL-1 receptor accessory protein-like 1 (IL1RAPL1) is upregulated upon γδ T cell activation to feedforward-amplify IL-17 production and is required for IL-38 to suppress γδ T cell IL-17 production. Accordingly, psoriatic IL1RAPL1 KO mice show reduced inflammation and IL-17 production by γδ T cells. Our findings indicate a role for IL-38 in the regulation of γδ T cell activation through IL1RAPL1, with consequences for auto-inflammatory disease.
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Affiliation(s)
- Yingying Han
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; Special Key Laboratory of Oral Diseases Research, Higher Education Institutions of Guizhou Province, Zunyi Medical University, 563006 Zunyi, Guizhou, China; School of Stomatology, Zunyi Medical University, 563006 Zunyi, Guizhou, China
| | - Javier Mora
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; Faculty of Microbiology, University of Costa Rica, 2060 San José, Costa Rica
| | - Arnaud Huard
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Priscila da Silva
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Svenja Wiechmann
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt am Main, Germany; Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Mateusz Putyrski
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Christian Schuster
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Eiman Elwakeel
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Guangping Lang
- Institute of Molecular Cell Biology, Center for Molecular Biomedicine (CMB), Jena University Hospital, 07745 Jena, Germany
| | - Anica Scholz
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Tatjana Scholz
- Division of Rheumatology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Tobias Schmid
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Natasja de Bruin
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Pierre Billuart
- Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique UMR8104, Université Paris Descartes, Paris 75014, France
| | - Carlo Sala
- National Research Council Neuroscience Institute, 20129 Milan, Italy; Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, 20129 Milan, Italy
| | - Harald Burkhardt
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany; Division of Rheumatology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Michael J Parnham
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Andreas Ernst
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt am Main, Germany; Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60590 Frankfurt, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany.
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Hildebrandt A, Brüggemann M, Rücklé C, Boerner S, Heidelberger JB, Busch A, Hänel H, Voigt A, Möckel MM, Ebersberger S, Scholz A, Dold A, Schmid T, Ebersberger I, Roignant JY, Zarnack K, König J, Beli P. The RNA-binding ubiquitin ligase MKRN1 functions in ribosome-associated quality control of poly(A) translation. Genome Biol 2019; 20:216. [PMID: 31640799 PMCID: PMC6805484 DOI: 10.1186/s13059-019-1814-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 09/04/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Cells have evolved quality control mechanisms to ensure protein homeostasis by detecting and degrading aberrant mRNAs and proteins. A common source of aberrant mRNAs is premature polyadenylation, which can result in non-functional protein products. Translating ribosomes that encounter poly(A) sequences are terminally stalled, followed by ribosome recycling and decay of the truncated nascent polypeptide via ribosome-associated quality control. RESULTS Here, we demonstrate that the conserved RNA-binding E3 ubiquitin ligase Makorin Ring Finger Protein 1 (MKRN1) promotes ribosome stalling at poly(A) sequences during ribosome-associated quality control. We show that MKRN1 directly binds to the cytoplasmic poly(A)-binding protein (PABPC1) and associates with polysomes. MKRN1 is positioned upstream of poly(A) tails in mRNAs in a PABPC1-dependent manner. Ubiquitin remnant profiling and in vitro ubiquitylation assays uncover PABPC1 and ribosomal protein RPS10 as direct ubiquitylation substrates of MKRN1. CONCLUSIONS We propose that MKRN1 mediates the recognition of poly(A) tails to prevent the production of erroneous proteins from prematurely polyadenylated transcripts, thereby maintaining proteome integrity.
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Affiliation(s)
- Andrea Hildebrandt
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Mirko Brüggemann
- Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University, Max-von-Laue-Str. 15, 60438, Frankfurt am Main, Germany
| | - Cornelia Rücklé
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
- Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University, Max-von-Laue-Str. 15, 60438, Frankfurt am Main, Germany
| | - Susan Boerner
- Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University, Max-von-Laue-Str. 15, 60438, Frankfurt am Main, Germany
| | - Jan B Heidelberger
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Anke Busch
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Heike Hänel
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Andrea Voigt
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Martin M Möckel
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | | | - Anica Scholz
- Faculty of Medicine, Institute of Biochemistry I, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Annabelle Dold
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Tobias Schmid
- Faculty of Medicine, Institute of Biochemistry I, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Ingo Ebersberger
- Department for Applied Bioinformatics, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany
- Senckenberg Biodiversity and Climate Research Centre (BiK-F), Georg-Voigt-Straße 14-16, 60325, Frankfurt am Main, Germany
| | - Jean-Yves Roignant
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, Génopode Building, CH-1015, Lausanne, Switzerland
| | - Kathi Zarnack
- Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University, Max-von-Laue-Str. 15, 60438, Frankfurt am Main, Germany.
| | - Julian König
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany.
| | - Petra Beli
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany.
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5
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Ortmann CA, Dorsheimer L, Abou-El-Ardat K, Hoffrichter J, Assmus B, Bonig H, Scholz A, Pfeifer H, Martin H, Schmid T, Brüne B, Scheich S, Steffen B, Riemann J, Hermann S, Dukat A, Bug G, Brandts CH, Wagner S, Serve H, Rieger MA. Functional Dominance of CHIP-Mutated Hematopoietic Stem Cells in Patients Undergoing Autologous Transplantation. Cell Rep 2019; 27:2022-2028.e3. [DOI: 10.1016/j.celrep.2019.04.064] [Citation(s) in RCA: 28] [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] [Received: 12/16/2018] [Revised: 02/02/2019] [Accepted: 04/12/2019] [Indexed: 12/21/2022] Open
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Winslow S, Scholz A, Rappl P, Brauß TF, Mertens C, Jung M, Weigert A, Brüne B, Schmid T. Macrophages attenuate the transcription of CYP1A1 in breast tumor cells and enhance their proliferation. PLoS One 2019; 14:e0209694. [PMID: 30615637 PMCID: PMC6322746 DOI: 10.1371/journal.pone.0209694] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/10/2018] [Indexed: 12/31/2022] Open
Abstract
While aberrant cells are routinely recognized and removed by immune cells, tumors eventually escape innate immune responses. Infiltrating immune cells are even corrupted by the tumor to acquire a tumor-supporting phenotype. In line, tumor-associated macrophages are well-characterized to promote tumor progression and high levels of tumor-infiltrating macrophages are a poor prognostic marker in breast cancer. Here, we aimed to further decipher the influence of macrophages on breast tumor cells and determined global gene expression changes in three-dimensional tumor spheroids upon infiltration of macrophages. While various tumor-associated mRNAs were upregulated, expression of the cytochrome P450 family member CYP1A1 was markedly attenuated. Repression of CYP1A1 in tumor cells was elicited by a macrophage-shaped tumor microenvironment rather than by direct tumor cell-macrophage contacts. In line with changes in RNA expression profiles, macrophages enhanced proliferation of the tumor cells. Enhanced proliferation and macrophage presence further correlated with reduced CYP1A1 expression in patient tumors when compared with normal tissue. These findings are of interest in the context of combinatory therapeutic approaches involving cytotoxic and immune-modulatory compounds.
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Affiliation(s)
- Sofia Winslow
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Anica Scholz
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Peter Rappl
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Thilo F. Brauß
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Christina Mertens
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Michaela Jung
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Tobias Schmid
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
- * E-mail:
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Scholz A, Handke J, Gillmann HJ, Dehne S, Janssen H, Arens C, Hansen N, Espeter F, Uhle F, Weigand M, Motsch J, Larmann J. P4464Low levels of circulating CD25high CD127low regulatory T cells predict perioperative major cardiovascular and cerebrovascular events after non-cardiac surgery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4464] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Scholz
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - J Handke
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - H.-J Gillmann
- Hannover Medical School, Department of Anesthesiology and Intensive Care Medicine, Hannover, Germany
| | - S Dehne
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - H Janssen
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - C Arens
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - N Hansen
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - F Espeter
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - F Uhle
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - M Weigand
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - J Motsch
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - J Larmann
- University Hospital of Heidelberg, Department of Anesthesiology, Heidelberg, Germany
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8
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Handke J, Scholz A, Gillmann HJ, Dehne S, Janssen H, Arens C, Hansen N, Espeter F, Uhle F, Weigand MA, Motsch J, Larmann J. P6252Preoperative plasma presepsin predicts major adverse cardiac and cerebrovascular complications after elective, non-cardiac surgery - post-hoc analysis from the LeukoCAPE-2 trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6252] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Handke
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - A Scholz
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - H.-J Gillmann
- Hannover Medical School, Department of Anaesthesiology and Intensive Care Medicine, Hannover, Germany
| | - S Dehne
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - H Janssen
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - C Arens
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - N Hansen
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - F Espeter
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - F Uhle
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - M A Weigand
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - J Motsch
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
| | - J Larmann
- University Hospital of Heidelberg, Department of Anaesthesiology, Heidelberg, Germany
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Zeidler S, Hubloher J, König P, Ngu ND, Scholz A, Averhoff B, Müller V. Salt induction and activation of MtlD, the key enzyme in the synthesis of the compatible solute mannitol in Acinetobacter baumannii. Microbiologyopen 2018; 7:e00614. [PMID: 29575790 PMCID: PMC6291793 DOI: 10.1002/mbo3.614] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/06/2018] [Accepted: 02/06/2018] [Indexed: 01/05/2023] Open
Abstract
Mannitol is the major compatible solute, next to glutamate, synthesized by the opportunistic human pathogen Acinetobacter baumannii under low water activities. The key enzyme for mannitol biosynthesis, MtlD, was identified. MtlD is highly similar to the bifunctional mannitol‐1‐phosphate dehydrogenase/phosphatase from Acinetobacter baylyi. After deletion of the mtlD gene from A. baumannii ATCC 19606T cells no longer accumulated mannitol and growth was completely impaired at high salt. Addition of glycine betaine restored growth, demonstrating that mannitol is an important compatible solute in the human pathogen. MtlD was heterologously produced and purified. Enzyme activity was strictly salt dependent. Highest stimulation was reached at 600 mmol/L NaCl. Addition of different sodium as well as potassium salts restored activity, with highest stimulations up to 41 U/mg protein by sodium glutamate. In contrast, an increase in osmolarity by addition of sugars did not restore activity. Regulation of mannitol synthesis was also assayed at the transcriptional level. Reporter gene assays revealed that expression of mtlD is strongly dependent on high osmolarity, not discriminating between different salts or sugars. The presence of glycine betaine or its precursor choline repressed promoter activation. These data indicate a dual regulation of mannitol production in A. baumannii, at the transcriptional and the enzymatic level, depending on high osmolarity.
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Affiliation(s)
- Sabine Zeidler
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Josephine Hubloher
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Patricia König
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Ngoc Dinh Ngu
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Anica Scholz
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Beate Averhoff
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
| | - Volker Müller
- Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt, Germany
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Lampe S, Kunze M, Scholz A, Brauß TF, Winslow S, Simm S, Keller M, Heidler J, Wittig I, Brüne B, Schmid T. Identification of the TXNIP IRES and characterization of the impact of regulatory IRES trans-acting factors. Biochim Biophys Acta Gene Regul Mech 2018; 1861:147-157. [PMID: 29378331 DOI: 10.1016/j.bbagrm.2018.01.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/10/2018] [Accepted: 01/14/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Sebastian Lampe
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Michael Kunze
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Anica Scholz
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Thilo F Brauß
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Sofia Winslow
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Stefan Simm
- Department of Molecular Cell Biology of Plants, Faculty of Biosciences, Goethe-University Frankfurt, 60438 Frankfurt, Germany
| | - Mario Keller
- Department of Molecular Cell Biology of Plants, Faculty of Biosciences, Goethe-University Frankfurt, 60438 Frankfurt, Germany
| | - Juliana Heidler
- Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Ilka Wittig
- Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Tobias Schmid
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany.
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Brauß TF, Winslow S, Lampe S, Scholz A, Weigert A, Dehne N, von Stedingk K, Schmid T, Brüne B. The RNA-binding protein HuR inhibits expression of CCL5 and limits recruitment of macrophages into tumors. Mol Carcinog 2017; 56:2620-2629. [PMID: 28731284 DOI: 10.1002/mc.22706] [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] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 07/04/2017] [Accepted: 07/19/2017] [Indexed: 11/08/2022]
Abstract
The RNA-binding protein HuR promotes tumor growth by affecting proliferation, metastasis, apoptosis, and angiogenesis. Although immune cells, especially tumor-associated macrophages, are critical components of the tumor stroma, the influence of HuR in tumors on the recruitment of immune cells remains poorly understood. In the present study, we, therefore, aimed to elucidate the impact of tumor cell HuR on the interaction between tumor cells and macrophages. To this end, we stably depleted HuR in human MCF-7 breast cancer cells. We found that HuR-deficient cells not only showed reduced proliferation, they further expressed elevated levels of the chemokine CCL5. HuR-dependent repression of CCL5 was neither caused by altered CCL5 mRNA stability, nor by changes in CCL5 translation. Instead, loss of HuR augmented transcription of CCL5, which was mediated via an interferon-stimulated response element in the CCL5 promoter. Furthermore, HuR depletion enhanced macrophage recruitment into MCF-7 tumor spheroids, an effect which was completely lost upon neutralization of CCL5. HuR expression further negatively correlated with CCL5 expression and macrophage appearance in a cohort of breast tumors. Thus, while HuR is well-characterized to support various pro-tumorigenic features in tumor cells, we provide evidence that it limits the recruitment of macrophages into tumors by repressing CCL5. As macrophage infiltration is associated with poor prognosis, our findings underline the highly cell-type and context specific role of HuR in tumorigenesis.
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Affiliation(s)
- Thilo F Brauß
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Sofia Winslow
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Sebastian Lampe
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Anica Scholz
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Andreas Weigert
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Nathalie Dehne
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Kristoffer von Stedingk
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden.,Department of Oncogenomics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Tobias Schmid
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Medical Faculty, Institute of Biochemistry 1, Goethe-University Frankfurt, Frankfurt, Germany
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Zitzelsberger T, Hetterich H, Lorbeer R, Scholz A, Auweter S, Bamberg F, Peters A, Reiser M, Schlett C. Myokardialer Strain mittels MR-basiertem Feature Tracking: Machbarkeit und Assoziation zu Risiko-Faktoren in einer Bevölkerungsstichprobe ohne kardiovaskuläre Erkrankungen. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600263] [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: 10/19/2022]
Affiliation(s)
- T Zitzelsberger
- Universitätsklinik Tübingen, Diagnostische und interventionelle Radiologie, Tübingen
| | - H Hetterich
- LMU München, Insitut für Radiologie, München
| | - R Lorbeer
- LMU München, Institut für Radiologie, München
| | - A Scholz
- Universitätsklinik Tübingen, Diagnostische und interventionelle Radiologie, Tübingen
| | - S Auweter
- LMU München, Institut für Radiologie, München
| | - F Bamberg
- Universitätsklinik Tübingen, Diagnostische und interventionelle Radiologie, Tübingen
| | - A Peters
- Helmholtz Zentrum München, Institute of Epidemiology II, Neuherberg
| | - M Reiser
- LMU München, Institut für Radiologie, München
| | - C Schlett
- Universitätsklinikum Heidelberg, Diagnostische und Interventionelle Radiologie, Heidelberg
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Lampe S, Brauß T, Kunze M, Scholz A, Winslow S, Brüne B, Schmid T. Abstract B09: hnRNPA1 is a regulator of UNR IRES activity. Cancer Res 2017. [DOI: 10.1158/1538-7445.transcontrol16-b09] [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: 11/16/2022]
Abstract
Abstract
Alternative translation initiation via internal ribosome entry sites (IRESs) allows for sustained expression of specific proteins under conditions, such as stress, where global translation is inhibited. As cells in tumors are constantly facing stress conditions, e.g. hypoxia or nutrient deprivation, it is not surprising that mRNAs encoding for oncogenes appear to be enriched in IRESs. IRES-dependent translation in eukaryotes commonly involves certain RNA-binding proteins, the so-called IRES trans-acting factors (ITAFs), that can directly interact with the IRESs to facilitate translation initiation. Upstream of N-Ras (UNR) is such an ITAF that can regulate the IRES activity of several cellular and viral IRESs. It is known that its 5' untranslated region (5' UTR) also contains an IRES that is regulated by polypyrimidine-tract binding protein (PTB), heterogeneous nuclear ribonucleoprotein (hnRNP) C1/C2 and UNR itself. Prediction analyses indicated that hnRNPA1 might bind to the 5' UTR of UNR as well. hnRNPA1 was previously already shown to serve as an ITAF in the regulation of the IRES activities of numerous mRNAs including egr2 and sST2. The aims of this project were to determine the impact of hnRNPA1 on the IRES activity of UNR. To test, if hnRNPA1 interacts with the 5' UTR of UNR, as predicted, we employed RNA affinity chromatography. We found that hnRNPA1 indeed strongly bound to the UNR 5' UTR. To assess, if hnRNPA1 consequently affects UNR IRES activity, we overexpressed hnRNPA1. Overexpression of hnRNPA1 markedly increased UNR IRES activity. hnRNPA1 overexpression further induced total UNR protein expression, which indicates that elevated UNR IRES activity results in enhanced translation. With respect to the exact interaction sites, hnRNPA1 binding was predicted to occur at overlapping sites to the previously published PTB binding sites. Deletion of the hnRNPA1 binding sites not only decreased the UNR IRES activity, it further rendered it insensitive to elevated hnRNPA1 levels. Taken together, we found that the 5' UTR of UNR contains specific hnRNPA1 binding sites and that binding of hnRNPA1 at these sites enhances the UNR IRES activity. Our findings therefore add a new piece to the complex puzzle of UNR regulating ITAFs. Having established hnRNPA1 as a new regulator of UNR IRES activity, might further put hnRNPA1 forward as an interesting target to regulate UNR expression.
Citation Format: Sebastian Lampe, Thilo Brauß, Michael Kunze, Anica Scholz, Sofia Winslow, Bernhard Brüne, Tobias Schmid. hnRNPA1 is a regulator of UNR IRES activity. [abstract]. In: Proceedings of the AACR Special Conference on Translational Control of Cancer: A New Frontier in Cancer Biology and Therapy; 2016 Oct 27-30; San Francisco, CA. Philadelphia (PA): AACR; Cancer Res 2017;77(6 Suppl):Abstract nr B09.
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Affiliation(s)
- Sebastian Lampe
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Thilo Brauß
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Michael Kunze
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Anica Scholz
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Sofia Winslow
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
| | - Tobias Schmid
- Institute of Biochemistry 1, Goethe-University, Frankfurt, Germany
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Scholz A, Stahl J, de Berardinis V, Müller V, Averhoff B. Osmotic stress response in Acinetobacter baylyi: identification of a glycine-betaine biosynthesis pathway and regulation of osmoadaptive choline uptake and glycine-betaine synthesis through a choline-responsive BetI repressor. Environ Microbiol Rep 2016; 8:316-322. [PMID: 26910138 DOI: 10.1111/1758-2229.12382] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 11/21/2015] [Indexed: 06/05/2023]
Abstract
Acinetobacter baylyi, a ubiquitous soil bacterium, can cope with high salinity by uptake of choline as precursor of the compatible solute glycine betaine. Here, we report on the identification of a choline dehydrogenase (BetA) and a glycine betaine aldehyde dehydrogenase (BetB) mediating the oxidation of choline to glycine betaine. The betAB genes were found to form an operon together with the potential transcriptional regulator betI. The transcription of the betIBA operon and the two recently identified choline transporters was upregulated in response to choline and choline plus salt. The finding that the osmo-independent transporter BetT1 undergoes a higher upregulation in response to choline alone than betT2 suggests that BetT1 does not primarily function in osmoadaptation. Electrophoretic mobility shift assays led to the conclusion that BetI mediates transcriptional regulation of both, the betIBA gene operon and the choline transporters. BetI was released from the DNA in response to choline which together with the transcriptional upregulation of the bet genes in the presence of choline suggests that BetI is a choline sensing transcriptional repressor.
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Affiliation(s)
- Anica Scholz
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Julia Stahl
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, Germany
| | | | - Volker Müller
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Beate Averhoff
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, Germany
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Scholz A, Stahl J, de Berardinis V, Müller V, Averhoff B. Osmotic stress response inAcinetobacter baylyi: Identification of a glycine-betaine biosynthesis pathway and regulation of osmoadaptive choline uptake and glycine betaine synthesis through a choline-responsive BetI repressor. Environ Microbiol 2015. [DOI: 10.1111/1462-2920.13148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anica Scholz
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main; Germany
| | - Julia Stahl
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main; Germany
| | | | - Volker Müller
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main; Germany
| | - Beate Averhoff
- Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main; Germany
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Suominen M, Fagerlund K, Rissanen J, Konkol Y, Alhoniemi E, Mumberg D, Ziegelbauer K, Käskönen S, Halleen J, Vessella R, Scholz A. 63 Radium-223 dichloride – Efficacy and mode-of-action in a mouse model of prostate cancer bone metastasis. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70189-3] [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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Scholz A, Cremer S, Harter P, Mittelbronn M, van Slyke P, Dumont D, Plate KH. AI-26 * OVERCOMING RESISTANCE TO VEGF-BLOCKADE BY TARGETING THE ANGIOPOIETIN/TIE2 AXIS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou238.26] [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: 11/13/2022] Open
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Leenen M, Scholz A, Lefering R, Flohé S. Limited volume resuscitation in hypotensive elderly multiple trauma is safe and prevents early clinical dilutive coagulopathy -- a matched-pair analysis from TraumaRegister DGU(®). Injury 2014; 45 Suppl 3:S59-63. [PMID: 25284236 DOI: 10.1016/j.injury.2014.08.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND The use of permissive hypotension includes a restrained volume preclinical therapy. However, in the elderly patients, this approach has raised concerns because of the increased cardiovascular risk profile and a higher incidence of hypertension under normal conditions. The aim of the study was to examine whether preclinical administration of restrictive volume therapy in the elderly patient can be safe. PATIENTS AND METHODS A retrospective matched-pair analysis with the data set of the TraumaRegister DGU(®) (TR-DGU) was performed based on data of 176 pairs of totally 67,000 patients. To address elderly potentially bleeding patients without major brain injury the following inclusion criteria were chosen: patients ≥ 60 years, ISS ≥ 16, AIS head<4, preclinical blood pressure between 60 and 100 mmHg and recorded preclinical volume administration. Patients that met the inclusion criteria (908) were divided into two groups: pre-clinical volume resuscitation ≤ 1000 ml (=low volume) and >1000 ml (high volume). Patients with high- and low-volume fluid replacement were matched according to the following criteria: age group, gender, date of the accident ± 5 years, ISS, GCS, preclinical intubation, ground-/air-transport, pre-clinical blood pressure. RESULTS Preclinical volume resuscitation showed a difference of about 1000 ml between the "low volume" and "high volume" group. The "low volume" group showed a significantly elongated prothrombin time. The amount of blood products given in the emergency department was not significantly different. The ventilation was 2 days shorter in the "low volume", although the number of patients with severe thoracic trauma was greater in this group. The length of stay in the ICU differed by 3 days in favour of the "low volume" group. The overall mortality was almost the same in both groups. CONCLUSIONS Based on these data it can be assumed that the lower preclinical volume administration has a positive effect on the initial coagulation status in elderly patients. In spite of some limitations such as low number of matched pairs, we draw the cautious conclusion that a restrictive preclinical volume therapy is safe and also indicated in elderly patients.
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Affiliation(s)
- M Leenen
- Heinrich Heine University Hospital Duesseldorf, Department of Trauma and Handsurgery, Moorenstr. 5, 40225 Duesseldorf, Germany
| | - A Scholz
- Heinrich Heine University Hospital Duesseldorf, Department of Trauma and Handsurgery, Moorenstr. 5, 40225 Duesseldorf, Germany.
| | - R Lefering
- Institute for Research in Operative Medicine (IFOM), Faculty of Medicine, Witten/Herdecke University, Germany
| | - S Flohé
- Heinrich Heine University Hospital Duesseldorf, Department of Trauma and Handsurgery, Moorenstr. 5, 40225 Duesseldorf, Germany
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Güldner M, Becker S, Wolf U, Düber C, Friesenecker A, Gast KK, Heil W, Hoffmann C, Karpuk S, Otten EW, Rivoire J, Salhi Z, Scholz A, Schreiber LM, Terekhov M. Application unit for the administration of contrast gases for pulmonary magnetic resonance imaging: optimization of ventilation distribution for (3) He-MRI. Magn Reson Med 2014; 74:884-93. [PMID: 25213218 DOI: 10.1002/mrm.25433] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 11/05/2022]
Abstract
PURPOSE MRI of lung airspaces using gases with MR-active nuclei ((3) He, (129) Xe, and (19) F) is an important area of research in pulmonary imaging. The volume-controlled administration of gas mixtures is important for obtaining quantitative information from MR images. State-of-the-art gas administration using plastic bags (PBs) does not allow for a precise determination of both the volume and timing of a (3) He bolus. METHODS A novel application unit (AU) was built according to the requirements of the German medical devices law. Integrated spirometers enable the monitoring of the inhaled gas flow. The device is particularly suited for hyperpolarized (HP) gases (e.g., storage and administration with minimal HP losses). The setup was tested in a clinical trial (n = 10 healthy volunteers) according to the German medicinal products law using static and dynamic ventilation HP-(3) He MRI. RESULTS The required specifications for the AU were successfully realized. Compared to PB-administration, better reproducibility of gas intrapulmonary distribution was observed when using the AU for both static and dynamic ventilation imaging. CONCLUSION The new AU meets the special requirements for HP gases, which are storage and administration with minimal losses. Our data suggest that gas AU-administration is superior to manual modes for determining the key parameters of dynamic ventilation measurements.
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Affiliation(s)
- M Güldner
- Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | - U Wolf
- Department of Radiology, University Medical Center Mainz, Mainz, Germany
| | - C Düber
- Department of Radiology, University Medical Center Mainz, Mainz, Germany
| | | | - K K Gast
- Department of Radiology, University Medical Center Mainz, Mainz, Germany
| | - W Heil
- Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany
| | - C Hoffmann
- Department of Radiology, University Medical Center Mainz, Mainz, Germany
| | - S Karpuk
- Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany
| | - E W Otten
- Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany
| | - J Rivoire
- Department of Radiology, Section of Medical Physics, University Medical Center Mainz, Mainz, Germany
| | - Z Salhi
- Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany
| | - A Scholz
- Department of Radiology, Section of Medical Physics, University Medical Center Mainz, Mainz, Germany
| | - L M Schreiber
- Department of Radiology, Section of Medical Physics, University Medical Center Mainz, Mainz, Germany
| | - M Terekhov
- Department of Radiology, Section of Medical Physics, University Medical Center Mainz, Mainz, Germany
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Plate KH, Scholz A, Mittelbronn M, Harter P, Dumont D, van Slyke P, Reiss Y. MOVING BEYOND VEGF: INHIBING GLIOMA ANGIOGENESIS BY TARGETING THE TIE2/ANGIOPOIETIN SIGNALING PATHWAY. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou206.55] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Stelzer B, Alcalá J, Whelan E, Scholz A. Emission line diagnostics for accretion and outflows in young very low-mass stars and brown dwarfs. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20136408005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abuhusain H, Matin A, Qiao Q, Shen H, Daniels B, Laaksonen M, Teo C, Don A, McDonald K, Jahangiri A, De Lay M, Lu K, Park C, Carbonell S, Bergers G, Aghi MK, Anand M, Tucker-Burden C, Kong J, Brat DJ, Bae E, Smith L, Muller-Greven G, Yamada R, Nakano-Okuno M, Feng X, Hambardzumyan D, Nakano I, Gladson CL, Berens M, Jung S, Kim S, Kiefer J, Eschbacher J, Dhruv H, Vuori K, Hauser C, Oshima R, Finlay D, Aza-Blanc P, Bessarabova M, Nikolsky Y, Emig D, Bergers G, Lu K, Rivera L, Chang J, Burrell K, Singh S, Hill R, Zadeh G, Li C, Chen Y, Mei X, Sai K, Chen Z, Wang J, Wu M, Marsden P, Das S, Eskilsson E, Talasila KM, Rosland GV, Leiss L, Saed HS, Brekka N, Sakariassen PO, Lund-Johansen M, Enger PO, Bjerkvig R, Miletic H, Gawrisch V, Ruttgers M, Weigell P, Kerkhoff E, Riemenschneider M, Bogdahn U, Vollmann-Zwerenz A, Hau P, Ichikawa T, Onishi M, Kurozumi K, Maruo T, Fujii K, Ishida J, Shimazu Y, Oka T, Chiocca EA, Date I, Jain R, Griffith B, Khalil K, Scarpace L, Mikkelsen T, Kalkanis S, Schultz L, Jalali S, Chung C, Burrell K, Foltz W, Zadeh G, Jiang C, Wang H, Kijima N, Hosen N, Kagawa N, Hashimoto N, Chiba Y, Kinoshita M, Sugiyama H, Yoshimine T, Klank R, Decker S, Forster C, Price M, SantaCruz K, McCarthy J, Ohlfest J, Odde D, Kurozumi K, Onishi M, Ichikawa T, Fujii K, Ishida J, Shimazu Y, Chiocca EA, Kaur B, Date I, Huang Y, Lin Q, Mao H, Wang Y, Kogiso M, Baxter P, Man C, Wang Z, Zhou Y, Li XN, Liang J, Piao Y, de Groot J, Lu K, Rivera L, Chang J, Bergers G, McDonell S, Liang J, Piao Y, Henry V, Holmes L, de Groot J, Michaelsen SR, Stockhausen MT, Hans, Poulsen S, Rosland GV, Talasila KM, Eskilsson E, Jahedi R, Azuaje F, Stieber D, Foerster S, Varughese J, Ritter C, Niclou SP, Bjerkvig R, Miletic H, Talasila KM, Soentgerath A, Euskirchen P, Rosland GV, Wang J, Huszthy PC, Prestegarden L, Skaftnesmo KO, Sakariassen PO, Eskilsson E, Stieber D, Keunen O, Nigro J, Vintermyr OK, Lund-Johansen M, Niclou SP, Mork S, Enger PO, Bjerkvig R, Miletic H, Mohan-Sobhana N, Hu B, De Jesus J, Hollingsworth B, Viapiano M, Muller-Greven G, Carlin C, Gladson C, Nakada M, Furuta T, Sabit H, Chikano Y, Hayashi Y, Sato H, Minamoto T, Hamada JI, Fack F, Espedal H, Obad N, Keunen O, Gotlieb E, Sakariassen PO, Miletic H, Niclou SP, Bjerkvig R, Bougnaud S, Golebiewska A, Stieber D, Oudin A, Brons NHC, Bjerkvig R, Niclou SP, O'Halloran P, Viel T, Schwegmann K, Wachsmuth L, Wagner S, Kopka K, Dicker P, Faber C, Jarzabek M, Hermann S, Schafers M, O'Brien D, Prehn J, Jacobs A, Byrne A, Oka T, Ichikawa T, Kurozumi K, Inoue S, Fujii K, Ishida J, Shimazu Y, Chiocca EA, Date I, Olsen LS, Stockhausen M, Poulsen HS, Plate KH, Scholz A, Henschler R, Baumgarten P, Harter P, Mittelbronn M, Dumont D, Reiss Y, Rahimpour S, Yang C, Frerich J, Zhuang Z, Renner D, Jin F, Parney I, Johnson A, Rockne R, Hawkins-Daarud A, Jacobs J, Bridge C, Mrugala M, Rockhill J, Swanson K, Schneider H, Szabo E, Seystahl K, Weller M, Takahashi Y, Ichikawa T, Maruo T, Kurozumi K, Onishi M, Ouchida M, Fuji K, Shimazu Y, Oka T, Chiocca EA, Date I, Umakoshi M, Ichikawa T, Kurozumi K, Onishi M, Fujii K, Ishida J, Shimazu Y, Oka T, Chiocca EA, Kaur B, Date I, Sim H, Gruenbacher P, Jakeman L, Viapiano M, Wang H, Jiang C, Wang H, Jiang C, Parker J, Dionne K, Canoll P, DeMasters B, Waziri A. ANGIOGENESIS AND INVASION. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not172] [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: 11/14/2022] Open
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Trajkovic-Arsic M, Heid I, Esposito I, Steiger K, Teichmann N, Steingötter A, Menne D, Scholz A, Rummeny EJ, Siveke J, Braren R. ADC as therapy response marker for pancreatic ductal adenocarcinoma in genetically engineered mice. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346234] [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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Scholz A, Posten C. Verwendung Ionenaustausch-funktionalisierter Magnetpartikel zur In-situ-Magnetseparation (ISMS). CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250271] [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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Schmieder R, Puehler F, Neuhaus R, Mumberg D, Ziegelbauer K, Scholz A. 959 The MEK Inhibitor BAY 86-9766 Prolongs Survival in Orthotopic, Syngeneic Animal Models of Hepatocellular Carcinoma and Pancreatic Cancer. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71578-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Otto N, Schulz P, Scholz A, Hauff P, Schlegelberger B, Detjen KM, Wiedenmann B. The proline TP53 variant stimulates likely lymphangiogenesis in an orthotopic mouse model of pancreatic cancer. Br J Cancer 2011; 106:348-57. [PMID: 22146521 PMCID: PMC3261666 DOI: 10.1038/bjc.2011.521] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: Pancreatic cancer is a deadly disease characterised by high incidence of TP53 mutations. Restoration of TP53 function is perceived as a highly attractive therapeutic strategy, whose effects are not well characterised. Methods: The current work adapted an inducible strategy of stage-specific reexpression of wild-type (wt) TP53 in an in vivo orthotopic mouse model of pancreatic cancer. Results: The reconstitution of wt TP53 function in TP53-mutant DanG and MiaPaCa-2 cells caused G1 cell cycle arrest but no evidence of apoptosis induction. Consistent with subcutaneous xenograft models, we found that wt TP53 reduced primary tumour growth. Wt TP53 reexpression during early tumour growth led to significant increase in vascularisation. This correlated with an unexpectedly high rate of micro-metastases in lymph nodes of animals with wt TP53 induction, despite the 90% decrease in median primary tumour weight. Reexpression of wt TP53 later in tumour development did not significantly affect the number of CD31-reactive vessels, but increased lymphatic vessel density. Conclusion: The increased number of lymphatic vessels and micro-metastases suggests that wt TP53 induction complexly affected the biology of different tumour constituents of pancreatic cancer. Our observation suggests that combination of the inducible system with an orthotopic model can yield important insights into in vivo pancreatic cancer biology.
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Affiliation(s)
- N Otto
- 1] Department of Internal Medicine, Division of Hepatology and Gastroenterology, Charité Berlin, Campus Virchow Clinic, 13353 Berlin, Germany.
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Beyerle A, Rueger R, Scholz A, Kontermann R, Heidenreich O. Targeted siRNA delivery to myeloid precursor cells. Klin Padiatr 2011. [DOI: 10.1055/s-0031-1277093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bellmann J, Scholz A. Lebenswege jüdischer und aus dem Judentum stammender Urologen während des Nationalsozialismus. Akt Dermatol 2011. [DOI: 10.1055/s-0030-1256217] [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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Puehler F, Scholz A, Kissel M, Adjei A, Miner J, Hitchcock M, Schmieder R, Mumberg D, Ziegelbauer K. 151 Allosteric MEK inhibitor BAY 86-9766 (RDEA119) shows anti-tumor efficacy in mono-and combination therapy in preclinical models of hepatocellular carcinoma and pancreatic cancer. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71856-5] [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] Open
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Gessner A, Thomas M, Garrido Castro P, Büchler L, Scholz A, Brümmendorf TH, Martinez Soria N, Vormoor J, Greil J, Heidenreich O. Leukemic fusion genes MLL/AF4 and AML1/MTG8 support leukemic self-renewal by controlling expression of the telomerase subunit TERT. Leukemia 2010; 24:1751-9. [DOI: 10.1038/leu.2010.155] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Gann H, Glaspell G, Garrad R, Wanekaya A, Ghosh K, Cillessen L, Scholz A, Parker B, Warner M, Delong RK. Interaction of MnO and ZnO nanomaterials with biomedically important proteins and cells. J Biomed Nanotechnol 2010; 6:37-42. [PMID: 20499830 DOI: 10.1166/jbn.2010.1100] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Zinc and manganese nanomaterials may have potential for biomedical nanotechnology. Here first generation Zn and Mn oxide nanomaterials were prepared as determined by XRD. Transmission electron microscopy confirmed their nanoscale in two dimensions and revealed a rod or belt-like morphology for MnO or ZnO respectively. Association of MnO and ZnO to three model biomedically important proteins (albumin, protamine and thrombin) has been characterized by ultra-violet and dynamic laser light spectroscopy, UVS and DLLS respectively. UVS demonstrated a concentration-dependent loss of protein from the supernatant upon sedimentation of MnO or ZnO. Shifts in the surface charge of the MnO or ZnO by DLLS confirmed the protein's adsorption to the surface. MnO and ZnO were incubated with live human cells in culture (HeLa, A375 or 1321N1). A marked difference was observed for the two nanomaterials behavior in cell culture where the MnO could be discerned associating at the cell surface whereas the ZnO caused the cells to exhibit a rounded up morphology. Trypan blue dye exclusion studies demonstrated cytotoxicity of the ZnO at high concentrations 62.5-31.5 microg/mL whereas surprisingly the MnO demonstrated no cytotoxicity at any of the concentrations tested.
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Affiliation(s)
- H Gann
- Missouri State University, Department of Biomedical Science, Cell and Molecular Biology Program, Springfield, MO 65894, USA
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Beyaert I, Wäschke N, Scholz A, Varama M, Reinecke A, Hilker M. Relevance of resource-indicating key volatiles and habitat odour for insect orientation. Anim Behav 2010. [DOI: 10.1016/j.anbehav.2010.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [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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Scholz A. Nathan Brann und die „Blätter für Beinheilkunde” 1922 – 1934. Akt Dermatol 2010. [DOI: 10.1055/s-0029-1215355] [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: 10/20/2022]
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35
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Amor N, Zänker PP, Blümler P, Meise FM, Schreiber LM, Scholz A, Schmiedeskamp J, Spiess HW, Münnemann K. Magnetic resonance imaging of dissolved hyperpolarized 129Xe using a membrane-based continuous flow system. J Magn Reson 2009; 201:93-99. [PMID: 19729327 DOI: 10.1016/j.jmr.2009.08.004] [Citation(s) in RCA: 19] [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] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 08/11/2009] [Accepted: 08/11/2009] [Indexed: 05/28/2023]
Abstract
A technique for continuous production of solutions containing hyperpolarized (129)Xe is explored for MRI applications. The method is based on hollow fiber membranes which inhibit the formation of foams and bubbles. A systematic analysis of various carrier agents for hyperpolarized (129)Xe has been carried out, which are applicable as contrast agents for in vivo MRI. The image quality of different hyperpolarized Xe solutions is compared and MRI results obtained in a clinical as well as in a nonclinical MRI setting are provided. Moreover, we demonstrate the application of (129)Xe contrast agents produced with our dissolution method for lung MRI by imaging hyperpolarized (129)Xe that has been both dissolved in and outgassed from a carrier liquid in a lung phantom, illustrating its potential for the measurement of lung perfusion and ventilation.
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Affiliation(s)
- N Amor
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
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Scholz A, Pugh S, Fardy M, Shafik M, Hall JE. The effect of dobutamine on blood flow of free tissue transfer flaps during head and neck reconstructive surgery*. Anaesthesia 2009; 64:1089-93. [DOI: 10.1111/j.1365-2044.2009.06055.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ingrisch H, Heinze H, Scholz A, Lissner J. Kamera-Perfusions-Szintigraphie der Lunge mit 133-Xenon-Gas und 99m-Technetium-Partikeln. Vergleich der quantitativen und morphologischen Aussage. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1229892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Botsch H, Hahn W, Scholz A, Meinhold H. Neue Ergebnisse zum Problem der Messung des Nierenplasmastroms mit radioaktiv markiertem Hippuran. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1229730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Scholz A. Renaissance der operativen Dermatologie in der Nachkriegszeit. Entwicklung in der DDR. Akt Dermatol 2009. [DOI: 10.1055/s-0029-1214786] [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: 10/20/2022]
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Abstract
UNLABELLED SUMMARY BACKGROUND AND OBJECTIVES: Due to the complexity of heparin-induced thrombocytopenia (HIT), currently available cost analyses are rough estimates. The objectives of this study were quantification of costs involved in HIT and identification of main cost drivers based on a patient-oriented approach. METHODS Patients diagnosed with HIT (1995-2004, University-hospital Greifswald, Germany) based on a positive functional assay (HIPA test) were retrieved from the laboratory records and scored (4T-score) by two medical experts using the patient file. For cost of illness analysis, predefined HIT-relevant cost parameters (medication costs, prolonged in-hospital stay, diagnostic and therapeutic interventions, laboratory tests, blood transfusions) were retrieved from the patient files. The data were analysed by linear regression estimates with the log of costs and a gamma regression model. Mean length of stay data of non-HIT patients were obtained from the German Federal Statistical Office, adjusted for patient characteristics, comorbidities and year of treatment. Hospital costs were provided by the controlling department. RESULTS AND CONCLUSIONS One hundred and thirty HIT cases with a 4T-score >or=4 and a positive HIPA test were analyzed. Mean additional costs of a HIT case were 9008 euro. The main cost drivers were prolonged in-hospital stay (70.3%) and costs of alternative anticoagulants (19.7%). HIT was more costly in surgical patients compared with medical patients and in patients with thrombosis. Early start of alternative anticoagulation did not increase HIT costs despite the high medication costs indicating prevention of costly complications. An HIT cost calculator is provided, allowing online calculation of HIT costs based on local cost structures and different currencies.
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Affiliation(s)
- T Wilke
- Institut für Pharmakoökonomie und Arzneimittellogistik, Hochschule Wismar, Wismar, Germany
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Shah S, Scholz A, Reber H, Schreckenberger M, Viebahn R, Lang H, Korenkov M. Laparoscopic radioisotope-guided sentinel lymph node mapping and excision of the rectum—an experimental study. Langenbecks Arch Surg 2009; 394:483-7. [DOI: 10.1007/s00423-009-0477-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Accepted: 02/24/2009] [Indexed: 10/21/2022]
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Scholz A, Wagner K, Welzel M, Remlinger F, Wiedenmann B, Siemeister G, Rosewicz S, Detjen KM. The oral multitarget tumour growth inhibitor, ZK 304709, inhibits growth of pancreatic neuroendocrine tumours in an orthotopic mouse model. Gut 2009; 58:261-70. [PMID: 18829975 DOI: 10.1136/gut.2007.146415] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND AND AIMS Current systemic therapies for neuroendocrine tumours (NETs) do not provide sufficient control of tumour growth. However, efficient evaluation of novel drugs is hindered by the lack of a suitable preclinical animal model. Here an orthotopic mouse model of pancreatic NET is established and used to study the action of ZK 304709, a first in class, oral multitarget tumour growth inhibitor. ZK 304709 is an inhibitor of cyclin-dependent kinases (Cdks) 1, 2, 4, 7 and 9, vascular endothelial growth factor receptor-type kinases (VEGF-RTKs) 1-3 and platelet-derived growth factor receptor-type kinase beta (PDGF-RTKss). METHODS BON and QGP-1 human NET cells were used to study proliferation, survival and cell cycle distribution in vitro. For induction of orthotopic NETs, BON cells were injected into the pancreas of NMRI(nu/nu) mice. Primary tumour growth and metastatic spread were recorded after 9 weeks, and apoptosis, microvessel density and lymphatic vessel density were determined. RESULTS ZK 304709 dose-dependently suppressed proliferation and colony formation of NET cells. Direct effects on NET cells were consistent with Cdk inhibition and involved G(2) cell cycle arrest and apoptosis induction, which was associated with reduced expression of MCL1 (myeloid cell leukaemia sequence 1), survivin and hypoxia-inducible factor 1alpha (HIF1alpha). Apoptosis similarly occurred in vivo in ZK 304709-treated orthotopic BON tumours, resulting in a 80% reduction of primary tumour growth. In contrast, treatment with lanreotide or 5-fluorouracil and streptozotocin failed to inhibit tumour gowth. ZK 304709 also reduced tumour microvessel density, implicating antiangiogenic mechanisms. CONCLUSION BON orthotopic tumours provide an informative model for preclinical drug evaluation in NETs. In this model, ZK 304709 achieved efficacious tumour growth control via induction of apoptosis and inhibition of tumour-induced angiogenesis.
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Affiliation(s)
- A Scholz
- Medizinische Klinik mit Schwerpunkt Hepatologie und Gastroenterologie, Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany
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Wetzig F, Scholz A, Hoffmann F. Der Effekt einer intrathekalen Triamcinolonacetonid-Therapie unter verschiedenen Basistherapien bei Multipler Sklerose – eine offene prospektive Verlaufsbeobachtung. Akt Neurol 2008. [DOI: 10.1055/s-0028-1086834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Klein CJ, Chan A, Kircher L, Cundiff AJ, Gardner N, Hrovat Y, Scholz A, Kendall BE, Airamé S. Striking a balance between biodiversity conservation and socioeconomic viability in the design of marine protected areas. Conserv Biol 2008; 22:691-700. [PMID: 18325043 DOI: 10.1111/j.1523-1739.2008.00896.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The establishment of marine protected areas is often viewed as a conflict between conservation and fishing. We considered consumptive and nonconsumptive interests of multiple stakeholders (i.e., fishers, scuba divers, conservationists, managers, scientists) in the systematic design of a network of marine protected areas along California's central coast in the context of the Marine Life Protection Act Initiative. With advice from managers, administrators, and scientists, a representative group of stakeholders defined biodiversity conservation and socioeconomic goals that accommodated social needs and conserved marine ecosystems, consistent with legal requirements. To satisfy biodiversity goals, we targeted 11 marine habitats across 5 depth zones, areas of high species diversity, and areas containing species of special status. We minimized adverse socioeconomic impacts by minimizing negative effects on fishers. We included fine-scale fishing data from the recreational and commercial fishing sectors across 24 fisheries. Protected areas designed with consideration of commercial and recreational fisheries reduced potential impact to the fisheries approximately 21% more than protected areas designed without consideration of fishing effort and resulted in a small increase in the total area protected (approximately 3.4%). We incorporated confidential fishing data without revealing the identity of specific fisheries or individual fishing grounds. We sited a portion of the protected areas near land parks, marine laboratories, and scientific monitoring sites to address nonconsumptive socioeconomic goals. Our results show that a stakeholder-driven design process can use systematic conservation-planning methods to successfully produce options for network design that satisfy multiple conservation and socioeconomic objectives. Marine protected areas that incorporate multiple stakeholder interests without compromising biodiversity conservation goals are more likely to protect marine ecosystems.
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Affiliation(s)
- C J Klein
- Centre for Applied Environmental Decision and Analysis, The University of Queensland, St Lucia, Qld 4072, Australia.
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Abstract
Subglottic stenosis (SGS) in pregnancy is rare but may cause a potentially life-threatening delivery and is a challenge to the anaesthetist and the obstetrician. Clinical signs of SGS may not be obvious and the diagnosis can be difficult. Patients usually present with shortness of breath rather than stridor. Many patients have been wrongly diagnosed with asthma and recurrent bronchitis before subsequent discovery of a SGS. Early diagnosis of SGS and multidisciplinary input is important in managing these patients. We present a case of a pregnant woman with a history of Wegener's granulomatosis and the successful multidisciplinary management of her SGS.
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Affiliation(s)
- A Scholz
- Department of Anaesthesia and Intensive Care Medicine, University Hospital of Wales, Heath Park, Cardiff CF14 4XW, UK.
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Terekhov M, Wolf U, Scholz A, Schreiber WG. Schnelles In-vivo-19F-MRT-T1-Mapping zur Messung der Konzentration von fluorinierten Gasen in der Lunge. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wolf U, Scholz A, Terekhov M, Schreiber WG. 19F-MRT der Lunge eines Wash-Outs von C4F8-Gas unter Hochfrequenzoszillationsbeatmung (HFOV). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Malan CA, Scholz A, Wilkes AR, Hampson MA, Hall JE. Minimum and optimum light requirements for laryngoscopy in paediatric anaesthesia: a manikin study*. Anaesthesia 2007; 63:65-70. [DOI: 10.1111/j.1365-2044.2007.05259.x] [Citation(s) in RCA: 10] [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: 10/21/2022]
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Abstract
BACKGROUND Clonidine has often been applied in combination with local anaesthetics for spinal or epidural anaesthesia. This study was designed to investigate the local anaesthetic-like action of clonidine in superficial dorsal horn neurones. The superficial laminae of the dorsal horn contain three groups of neurones: tonic-, adapting-, and single-spike-firing neurones which are important neuronal structures for pain transmission, receiving most of their primary sensory input from Adelta and C fibres. METHODS Whole cell patch clamp recordings from spinal cord slices of Wistar rats were used to study the action of clonidine on the generation of single and series of action potentials. Voltage clamp recordings in isolated somata were performed to study the effect of clonidine on voltage-gated Na(+) and different types of K(+) currents. RESULTS Firing frequencies of trains of action potentials in tonic-firing neurones are reduced at low concentrations (10 microM) of clonidine, but not in adapting- or single-spike-firing neurones. High concentrations of clonidine (700 microM) are necessary to modify the shape of single action potentials. Low concentrations of clonidine shift the steady-state inactivation curve of Na(+) currents to more negative potentials. At clinical concentrations (6-100 microM) clonidine partially inhibits voltage-gated Na(+) and K(+) channels. CONCLUSIONS Clonidine suppresses the generation of action potentials in tonic-firing spinal dorsal horn neurones. This may be explained, in part, by an interaction with voltage-gated Na(+) and K(+) currents. Clonidine could therefore contribute to analgesia during local anaesthesia.
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Affiliation(s)
- M Wolff
- Clinic for Anaesthesiology, Intensive Care Medicine, and Pain Therapy, Giessen, Germany.
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Abstract
Illumination provided by laryngoscope blades varies widely. It is not known what the optimum level of illumination should be during laryngoscopy. So far, no published standards exist for light intensity provided by laryngoscopes. Fifty anaesthetists were recruited to perform laryngoscopy on a manikin with three different laryngoscopes attached to a variable voltage supply. Anaesthetists were asked to find the minimum and optimum level of light they would wish to have for intubation. This study demonstrated that anaesthetists can see the larynx at very low light levels. The optimum level was significantly greater than the minimum level. The vacuum bulb laryngoscopes provides a significant lower light output than halogen and xenon laryngoscopes. There is a large variation in illumination requirements amongst anaesthetists which may make setting standards difficult. A brighter laryngoscope, as suggested by some manufacturers, may not necessarily be a better one.
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Affiliation(s)
- A Scholz
- Department of Anaesthesics and Intensive Care Medicine, University Hospital of Wales Cardiff, Heath Park, Cardiff CF14 4XW, UK.
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