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Lehmann R, Rayner BS, Ziegler DS. Resistance mechanisms in BRAF V600E paediatric high-grade glioma and current therapeutic approaches. Front Oncol 2022; 12:1031378. [PMID: 36582791 PMCID: PMC9792688 DOI: 10.3389/fonc.2022.1031378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/25/2022] [Indexed: 12/15/2022] Open
Abstract
Paediatric high-grade gliomas (pHGG) are aggressive central nervous system tumours with a poor prognosis. BRAFV600E mutant pHGGs can be treated with targeted BRAF inhibitors, which have shown both preclinical activity and potent clinical efficacy. Unfortunately, the development of drug resistance results in disease relapse or progression and is the primary cause of treatment failure. While there is a lot of data to explain mechanisms of resistance in other BRAFV600E tumours, comparatively little is known about the mechanisms of BRAF inhibitor resistance in BRAFV600E pHGG. Recent literature has identified aberrations in members of the RAS/RAF/ERK pathway, the PI3K/AKT/MTOR pathway and the cell cycle as major contributors to the resistance profile. A range of novel therapies have been suggested to overcome BRAF inhibitor drug resistance in BRAFV600E pHGG. This review will discuss the current literature available for BRAF inhibitor resistant BRAFV600E pHGGs and provide an overview of the currently available and proposed therapies.
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Affiliation(s)
- R. Lehmann
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia,School of Clinical Medicine, University of New South Wales (UNSW) Medicine & Health, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia
| | - B. S. Rayner
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia,School of Clinical Medicine, University of New South Wales (UNSW) Medicine & Health, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia
| | - D. S. Ziegler
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia,School of Clinical Medicine, University of New South Wales (UNSW) Medicine & Health, University of New South Wales (UNSW) Sydney, Sydney, NSW, Australia,Kids Cancer Centre, Sydney Children’s Hospital, Randwick, NSW, Australia,*Correspondence: D. S. Ziegler,
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O'Sullivan J, Gonzalez B, Gudenkauf L, Lehmann R, Allen S, Ernst-Guenther C, Wolinsky H, Poschenrieder A, Mirante O, Morgans A. 1401P Quality of life across three countries using a large-scale, fully digital survey of patients with prostate cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1887] [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: 11/28/2022] Open
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Lehmann R, Stieler M. Chancen und Risiken KI gestützter Evaluationsmethoden
textbasierter Kommunikation. Suchttherapie 2022. [DOI: 10.1055/s-0042-1756095] [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] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Affiliation(s)
- R Lehmann
- Technische Hochschule Nürnberg Georg Simon Ohm,
Nürnberg
| | - M Stieler
- Technische Hochschule Nürnberg Georg Simon Ohm,
Nürnberg
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Abstract
Individual cells detach from cohesive ensembles during development and can inappropriately separate in disease. Although much is known about how cells separate from epithelia, it remains unclear how cells disperse from clusters lacking apical-basal polarity, a hallmark of advanced epithelial cancers. Here, using live imaging of the developmental migration program of Drosophila primordial germ cells (PGCs), we show that cluster dispersal is accomplished by stabilizing and orienting migratory forces. PGCs utilize a G protein coupled receptor (GPCR), Tre1, to guide front-back migratory polarity radially from the cluster toward the endoderm. Posteriorly positioned myosin-dependent contractile forces pull on cell-cell contacts until cells release. Tre1 mutant cells migrate randomly with transient enrichment of the force machinery but fail to separate, indicating a temporal contractile force threshold for detachment. E-cadherin is retained on the cell surface during cell separation and augmenting cell-cell adhesion does not impede detachment. Notably, coordinated migration improves cluster dispersal efficiency by stabilizing cell-cell interfaces and facilitating symmetric pulling. We demonstrate that guidance of inherent migratory forces is sufficient to disperse cell clusters under physiological settings and present a paradigm for how such events could occur across development and disease.
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Affiliation(s)
- B Lin
- HHMI and Kimmel Center for Biology and Medicine of the Skirball Institute, Department of Cell Biology, New York University School of Medicine, New York, NY, USA.
| | - J Luo
- HHMI and Kimmel Center for Biology and Medicine of the Skirball Institute, Department of Cell Biology, New York University School of Medicine, New York, NY, USA
| | - R Lehmann
- HHMI and Kimmel Center for Biology and Medicine of the Skirball Institute, Department of Cell Biology, New York University School of Medicine, New York, NY, USA.
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA.
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Jentschke M, Lehmann R, Drews N, Hansel A, Schmitz M, Hillemanns P. Psychological distress in cervical cancer screening: results from a German online survey. Arch Gynecol Obstet 2020; 302:699-705. [PMID: 32594298 PMCID: PMC7447652 DOI: 10.1007/s00404-020-05661-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 04/11/2020] [Accepted: 06/18/2020] [Indexed: 12/24/2022]
Abstract
Purpose The PODCAD study aimed at assessing the degree of psychological stress that women experience due to notification of an abnormal Papanicolaou (Pap) smear finding or a positive human papillomavirus (HPV) test result. Methods We designed a survey to address the question of psychological burden due to abnormal Pap smear results and/or positive HPV tests. In this online campaign approach, we aimed to reach > 2000 women all over Germany irrespective of kind and number of abnormal screening findings. We asked for different kinds of anxiety, distress and uncertainty regarding both, Pap and HPV status. Results A total of 3753 women completed the survey at least partially, and almost 2300 fully completed the survey. Of these, more than 50% were affected already since more than 1 year, and almost half of them had experienced at least three Pap smears in follow-up examinations. Almost 70% of the women were afraid of developing cancer. Intriguingly, almost half of the women with abnormal findings were not aware of their stage of the Pap smear. Furthermore, almost 30% of the women displayed signs of a post-traumatic stress disorder. Conclusion Abnormal results in cervical cancer screening have an impact on patients’ psychology, irrespective of the knowledge and severity of the findings. Better information concerning risks and benefits of cervical cancer screening and about the meaning of the outcome of its procedures are required to decrease this anxiety. Electronic supplementary material The online version of this article (10.1007/s00404-020-05661-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- M Jentschke
- Department of Gynaecology and Obstetrics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - R Lehmann
- DontBePatient Intelligence GmbH, c/o GCI Management, Brienner Str. 7, 80333, Munich, Germany
| | - N Drews
- DontBePatient Intelligence GmbH, c/o GCI Management, Brienner Str. 7, 80333, Munich, Germany
| | - A Hansel
- Oncgnostics GmbH, Winzerlaer Str. 2, 07745, Jena, Germany
| | - M Schmitz
- Oncgnostics GmbH, Winzerlaer Str. 2, 07745, Jena, Germany
| | - P Hillemanns
- Department of Gynaecology and Obstetrics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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Herrmann M, Geesink P, Yan L, Lehmann R, Totsche KU, Küsel K. Complex food webs coincide with high genetic potential for chemolithoautotrophy in fractured bedrock groundwater. Water Res 2020; 170:115306. [PMID: 31770650 DOI: 10.1016/j.watres.2019.115306] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 07/11/2019] [Revised: 10/14/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Groundwater ecosystems face the challenge of energy limitation due to the absence of light-driven primary production. Lack of space and low oxygen availability might further contribute to generally assumed low food web complexity. Chemolithoautotrophy provides additional input of carbon within the subsurface, however, we still do not understand how abundances of chemolithoautotrophs, differences in surface carbon input, and oxygen availability control subsurface food web complexity. Using a molecular approach, we aimed to disentangle the different levels of potential trophic interactions in oligotrophic groundwater along a hillslope setting of alternating mixed carbonate-/siliciclastic bedrock with contrasting hydrochemical conditions and hotspots of chemolithoautotrophy. Across all sites, groundwater harbored diverse protist communities including Ciliophora, Cercozoa, Centroheliozoa, and Amoebozoa but correlations with hydrochemical parameters were less pronounced for eukaryotes compared to bacteria. Ciliophora-affiliated reads dominated the eukaryotic data sets across all sites. DNA-based evidence for the presence of metazoan top predators such as Cyclopoida (Arthropoda) and Stenostomidae (Platyhelminthes) was only found at wells where abundances of functional genes associated with chemolithoautotrophy were 10-100 times higher compared to wells without indications of these top predators. At wells closer to recharge areas with presumably increased inputs of soil-derived substances and biota, fungi accounted for up to 85% of the metazoan-curated eukaryotic sequence data, together with a low potential for chemolithoautotrophy. Although we did not directly observe higher organisms, our results point to the existence of complex food webs with several trophic levels in oligotrophic groundwater. Chemolithoautotrophy appears to provide strong support to more complex trophic interactions, feeding in additional biomass produced by light-independent CO2-fixation.
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Affiliation(s)
- M Herrmann
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany
| | - P Geesink
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany
| | - L Yan
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany
| | - R Lehmann
- Friedrich Schiller University Jena, Institute of Geosciences, Chair of Hydrogeology, Burgweg 11, D-07749, Jena, Germany
| | - K U Totsche
- Friedrich Schiller University Jena, Institute of Geosciences, Chair of Hydrogeology, Burgweg 11, D-07749, Jena, Germany
| | - K Küsel
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany.
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Mukherjee K, Dubovskiy I, Grizanova E, Lehmann R, Vilcinskas A. Epigenetic mechanisms mediate the experimental evolution of resistance against parasitic fungi in the greater wax moth Galleria mellonella. Sci Rep 2019; 9:1626. [PMID: 30733453 PMCID: PMC6367475 DOI: 10.1038/s41598-018-36829-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/23/2018] [Indexed: 02/07/2023] Open
Abstract
Recent concepts in evolutionary biology suggest that epigenetic mechanisms can translate environmental selection pressures into heritable changes in phenotype. To determine whether experimental selection for a complex trait in insects involves epigenetic modifications, we carried out a generation-spanning experiment using larvae of the greater wax moth Galleria mellonella as a model host to investigate the role of epigenetics in the heritability of resistance against the parasitic fungus Metarhizium robertsii. We investigated differences in DNA methylation, histone acetylation and microRNA (miRNA) expression between an experimentally resistant population and an unselected, susceptible line, revealing that the survival of G. mellonella larvae infected with M. robertsii correlates with tissue-specific changes in DNA methylation and histone modification and the modulation of genes encoding the corresponding enzymes. We also identified miRNAs differentially expressed between resistant and susceptible larvae and showed that these regulatory molecules target genes encoding proteinases and proteinase inhibitors, as well as genes related to cuticle composition, innate immunity and metabolism. These results support our hypothesis that epigenetic mechanisms facilitate, at least in part, the heritable manifestation of parasite resistance in insects. The reciprocal adaptations underlying host–parasite coevolution therefore extend beyond the genetic level to encompass epigenetic modifications.
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Affiliation(s)
- Krishnendu Mukherjee
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Str. 2, 35394, Giessen, Germany
| | - Ivan Dubovskiy
- Novosibirsk State Agrarian University, Dobrolubova 160, 630039, Novosibirsk, Russia
| | - Ekaterina Grizanova
- Novosibirsk State Agrarian University, Dobrolubova 160, 630039, Novosibirsk, Russia
| | - Rüdiger Lehmann
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Str. 2, 35394, Giessen, Germany
| | - Andreas Vilcinskas
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Str. 2, 35394, Giessen, Germany. .,Institute for Insect Biotechnology, Justus-Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany.
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Gebauer S, Grenfell JL, Lehmann R, Rauer H. Evolution of Earth-like Planetary Atmospheres around M Dwarf Stars: Assessing the Atmospheres and Biospheres with a Coupled Atmosphere Biogeochemical Model. Astrobiology 2018; 18:856-872. [PMID: 30035637 DOI: 10.1089/ast.2017.1723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Earth-like planets orbiting M dwarfs are prominent targets when searching for life outside the Solar System. We apply our Coupled Atmosphere Biogeochemical model to investigate the coupling between the biosphere, geosphere, and atmosphere in order to gain insight into the atmospheric evolution of Earth-like planets orbiting M dwarfs and to understand the processes affecting biosignatures and climate on such worlds. This is the first study applying an automated chemical pathway analysis quantifying the production and destruction pathways of molecular oxygen (O2) for an Earth-like planet with an Archean O2 concentration orbiting in the habitable zone of the M dwarf star AD Leonis, which we take as a type-case of an active M dwarf. The main production arises in the upper atmosphere from carbon dioxide photolysis followed by catalytic hydrogen oxide radical (HOx) reactions. The strongest destruction does not take place in the troposphere, as was the case in Gebauer et al. ( 2017 ) for an early Earth analog planet around the Sun, but instead in the middle atmosphere where water photolysis is the strongest. Results further suggest that these atmospheres are in absolute terms less destructive for O2 than for early Earth analog planets around the Sun despite higher concentrations of reduced gases such as molecular hydrogen, methane, and carbon monoxide. Hence smaller amounts of net primary productivity are required to oxygenate the atmosphere due to a change in the atmospheric oxidative capacity, driven by the input stellar spectrum resulting in shifts in the intrafamily HOx partitioning. Under the assumption that an atmosphere of an Earth-like planet survived and evolved during the early high-activity phase of an M dwarf to an Archean-type composition, a possible "Great Oxidation Event," analogous to that on Early Earth, would have occurred earlier in time after the atmospheric composition was reached, assuming the same atmospheric O2 sources and sinks as on early Earth. Key Words: Earth-like-Oxygen-M dwarf stars-Atmosphere-Biogeochemistry-Photochemistry-Biosignatures-Earth-like planets. Astrobiology 18, 856-872.
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Affiliation(s)
- S Gebauer
- 1 Zentrum für Astronomie und Astrophysik (ZAA), Technische Universität Berlin (TUB) , Berlin, Germany
- 2 Institut für Planetenforschung (PF) , Abteilung Eaxtrasolare Planeten und Atmosphären (EPA), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
| | - J L Grenfell
- 2 Institut für Planetenforschung (PF) , Abteilung Eaxtrasolare Planeten und Atmosphären (EPA), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
| | - R Lehmann
- 3 Alfred-Wegener Institut , Helmholtz-Zentrum für Polar- und Meeresforschung, Potsdam, Germany
| | - H Rauer
- 1 Zentrum für Astronomie und Astrophysik (ZAA), Technische Universität Berlin (TUB) , Berlin, Germany
- 2 Institut für Planetenforschung (PF) , Abteilung Eaxtrasolare Planeten und Atmosphären (EPA), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
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Jaghutriz BA, Wagner R, Heni M, Gerst F, Siegel-Axel DI, Ullrich S, Lehmann R, Machann J, Stefan N, Häring HU, Fritsche A. Metabolomic characteristics of fatty pancreas. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641787] [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: 10/28/2022]
Affiliation(s)
- BA Jaghutriz
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - R Wagner
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - M Heni
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - F Gerst
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - DI Siegel-Axel
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - S Ullrich
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - R Lehmann
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - J Machann
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - N Stefan
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - HU Häring
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
| | - A Fritsche
- Institut für Diabetesforschung und Metabolische Erkrankungen des Helmholtz Zentrum München an der Eberhard-Karls-Universität Tübingen, Tübingen, Germany
- Deutsches Zentrum für Diabetesforschung (DZD e.V.), Tübingen, Germany
- Universitätsklinikum Tübingen, Innere Medizin IV – Endokrinologie und Diabetologie, Angiologie, Nephrologie und Klinische Chemie, Tübingen, Germany
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Lehmann R, Müller M, Klassert TE, Driesch D, Stock M, Heinrich A, Conrad T, Moore C, Schier U, Guthke R, Slevogt H. Differential regulation of the transcriptomic and secretomic landscape of sensor and effector funtions of human airway epithelial cells. Pneumologie 2018. [DOI: 10.1055/s-0037-1619390] [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: 10/28/2022]
Affiliation(s)
- R Lehmann
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - M Müller
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - TE Klassert
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | | | - M Stock
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - A Heinrich
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - T Conrad
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute, Research Group Systems Biology and Bioinformatics, Jena
| | - C Moore
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - U Schier
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
| | - R Guthke
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute, Research Group Systems Biology and Bioinformatics, Jena
| | - H Slevogt
- Zik Septomics, AG Host Septomics, Universitätsklinikum Jena
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Baumann A, Skaljac M, Lehmann R, Vilcinskas A, Franta Z. Urate Oxidase produced by Lucilia sericata medical maggots is localized in Malpighian tubes and facilitates allantoin production. Insect Biochem Mol Biol 2017; 83:44-53. [PMID: 28235562 DOI: 10.1016/j.ibmb.2017.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 12/01/2016] [Revised: 02/20/2017] [Accepted: 02/20/2017] [Indexed: 06/06/2023]
Abstract
Lucilia sericata maggots are the only species currently approved for maggot debridement therapy (MDT), an alternative treatment for chronic and recalcitrant wounds. Maggots promote wound debridement, disinfection and healing by producing a complex mixture of proteins, peptides and low-molecular-weight compounds in their secretions and excretions, but the individual components are not well characterized at the molecular level. Here we investigated the purine catabolism pathway in L. sericata, focusing on the production of allantoin by Urate Oxidase (UO), which is thought to promote wound healing. We produced recombinant L. sericata UO in Escherichia coli, and characterized the properties of the pure enzyme in terms of the optimum pH (7-10) and temperature (20-25 °C), its stability, sensitivity to inhibition and ion dependency. We used quantitative RT-PCR and RNA in situ hybridization to monitor the expression of the UO gene, and we used a guinea pig anti-UO antibody to detect the native enzyme by western blot and by florescence immunohistochemistry in larval tissues. We found that L. sericata UO is exclusively present in the larval excretion organ (the Malpighian tubes) and is freely available in the cytoplasm rather than restricted to a specific subcellular compartment. Allantoin is a final product of L. sericata purine catabolism. It is produced by UO in the Malpighian tubes to remove uric acid from the hemolymph and is consequently excreted via the hindgut. Our findings confirm the hypothesis that both actively secreted molecules and excretion products contribute to the beneficial effects of MDT.
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Affiliation(s)
- Andre Baumann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstraße 2, 35394 Giessen, Germany
| | - Marisa Skaljac
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstraße 2, 35394 Giessen, Germany
| | - Rüdiger Lehmann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstraße 2, 35394 Giessen, Germany
| | - Andreas Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstraße 2, 35394 Giessen, Germany; Justus-Liebig-University of Giessen, Institute for Insect Biotechnology, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Zdenӗk Franta
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstraße 2, 35394 Giessen, Germany.
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Fallier-Becker P, Vollmer JP, Wolburg H, Haen S, Steiner J, Noell S, Lehmann R, Fend F. Case report: Propofol-related infusion syndrome. Ultrastruct Pathol 2017. [DOI: 10.1080/01913123.2016.1270783] [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]
Affiliation(s)
- P. Fallier-Becker
- Institute of Pathology and Neuropathology, University of Tuebingen, Tuebingen, Germany
| | - J. P. Vollmer
- Institute of Anaesthesiology, Stadtspital Triemli, Zürich, Switzerland
| | - H. Wolburg
- Institute of Pathology and Neuropathology, University of Tuebingen, Tuebingen, Germany
| | - S. Haen
- Institute of Pathology and Neuropathology, University of Tuebingen, Tuebingen, Germany
| | - J. Steiner
- Neurosurgical Clinics, University of Tuebingen, Tuebingen, Germany
| | - S. Noell
- Neurosurgical Clinics, University of Tuebingen, Tuebingen, Germany
| | - R. Lehmann
- Clinical Chemical Central Laboratory, University of Tuebingen, Tuebingen, Germany
| | - F. Fend
- Institute of Pathology and Neuropathology, University of Tuebingen, Tuebingen, Germany
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Gebauer S, Grenfell JL, Stock JW, Lehmann R, Godolt M, von Paris P, Rauer H. Evolution of Earth-like Extrasolar Planetary Atmospheres: Assessing the Atmospheres and Biospheres of Early Earth Analog Planets with a Coupled Atmosphere Biogeochemical Model. Astrobiology 2017; 17:27-54. [PMID: 28103105 DOI: 10.1089/ast.2015.1384] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Understanding the evolution of Earth and potentially habitable Earth-like worlds is essential to fathom our origin in the Universe. The search for Earth-like planets in the habitable zone and investigation of their atmospheres with climate and photochemical models is a central focus in exoplanetary science. Taking the evolution of Earth as a reference for Earth-like planets, a central scientific goal is to understand what the interactions were between atmosphere, geology, and biology on early Earth. The Great Oxidation Event in Earth's history was certainly caused by their interplay, but the origin and controlling processes of this occurrence are not well understood, the study of which will require interdisciplinary, coupled models. In this work, we present results from our newly developed Coupled Atmosphere Biogeochemistry model in which atmospheric O2 concentrations are fixed to values inferred by geological evidence. Applying a unique tool (Pathway Analysis Program), ours is the first quantitative analysis of catalytic cycles that governed O2 in early Earth's atmosphere near the Great Oxidation Event. Complicated oxidation pathways play a key role in destroying O2, whereas in the upper atmosphere, most O2 is formed abiotically via CO2 photolysis. The O2 bistability found by Goldblatt et al. ( 2006 ) is not observed in our calculations likely due to our detailed CH4 oxidation scheme. We calculate increased CH4 with increasing O2 during the Great Oxidation Event. For a given atmospheric surface flux, different atmospheric states are possible; however, the net primary productivity of the biosphere that produces O2 is unique. Mixing, CH4 fluxes, ocean solubility, and mantle/crust properties strongly affect net primary productivity and surface O2 fluxes. Regarding exoplanets, different "states" of O2 could exist for similar biomass output. Strong geological activity could lead to false negatives for life (since our analysis suggests that reducing gases remove O2 that masks its biosphere over a wide range of conditions). Key Words: Early Earth-Proterozoic-Archean-Oxygen-Atmosphere-Biogeochemistry-Photochemistry-Biosignatures-Earth-like planets. Astrobiology 16, 27-54.
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Affiliation(s)
- S Gebauer
- 1 Zentrum für Astronomie und Astrophysik (ZAA), Technische Universität Berlin (TUB) , Berlin, Germany
- 2 Institut für Planetenforschung (PF) , Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
| | - J L Grenfell
- 2 Institut für Planetenforschung (PF) , Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
| | - J W Stock
- 3 Instituto de Astrofísica de Andalucía-CSIC , Granada, Spain
| | - R Lehmann
- 4 Alfred-Wegener Institut Helmholtz-Zentrum für Polar- und Meeresforschung , Potsdam, Germany
| | - M Godolt
- 2 Institut für Planetenforschung (PF) , Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
| | - P von Paris
- 5 Université de Bordeaux , LAB, UMR 5804, Floirac, France
- 6 CNRS, LAB , UMR 5804, Floirac, France
| | - H Rauer
- 1 Zentrum für Astronomie und Astrophysik (ZAA), Technische Universität Berlin (TUB) , Berlin, Germany
- 2 Institut für Planetenforschung (PF) , Deutsches Zentrum für Luft- und Raumfahrt (DLR), Berlin, Germany
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Xu G, Hansen JS, Zhao XJ, Chen S, Hoene M, Wang XL, Clemmesen JO, Secher NH, Häring HU, Pedersen BK, Lehmann R, Weigert C, Plomgaard P. Liver and Muscle Contribute Differently to the Plasma Acylcarnitine Pool During Fasting and Exercise in Humans. J Clin Endocrinol Metab 2016; 101:5044-5052. [PMID: 27648961 DOI: 10.1210/jc.2016-1859] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND Plasma acylcarnitine levels are elevated by physiological conditions such as fasting and exercise but also in states of insulin resistance and obesity. AIM To elucidate the contribution of liver and skeletal muscle to plasma acylcarnitines in the fasting state and during exercise in humans. METHODS In 2 independent studies, young healthy males were fasted overnight and performed an acute bout of exercise to investigate either acylcarnitines in skeletal muscle biopsies and arterial-to-venous plasma differences over the exercising and resting leg (n = 9) or the flux over the hepato-splanchnic bed (n = 10). RESULTS In the fasting state, a pronounced release of C2- and C3-carnitines from the hepato-splanchnic bed and an uptake of free carnitine by the legs were detected. Exercise further increased the release of C3-carnitine from the hepato-splanchnic bed and the uptake of free carnitine in the exercising leg. In plasma and in the exercising muscle, exercise induced an increase of most acylcarnitines followed by a rapid decline to preexercise values during recovery. In contrast, free carnitine was decreased in the exercising muscle and quickly restored thereafter. C8-, C10-, C10:1-, C12-, and C12:1-carnitines were released from the exercising leg and simultaneously; C6, C8, C10, C10:1, C14, and C16:1 were taken up by the hepato-splanchnic. CONCLUSION These data provide novel insight to the organo-specific release/uptake of acylcarnitines. The liver is a major contributor to systemic short chain acylcarnitines, whereas the muscle tissue releases mostly medium chain acylcarnitines during exercise, indicating that other tissues are contributing to the systemic increase in long chain acylcarnitines.
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Affiliation(s)
- G Xu
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - J S Hansen
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - X J Zhao
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - S Chen
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - M Hoene
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - X L Wang
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - J O Clemmesen
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - N H Secher
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - H U Häring
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - B K Pedersen
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - R Lehmann
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - Cora Weigert
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
| | - Peter Plomgaard
- Key Laboratory of Separation Science for Analytical Chemistry (G.X., X.J.Z., X.L.W.), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; Department of Clinical Biochemistry (J.S.H., P.P.), Rigshospitalet, Copenhagen, Denmark; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research (J.S.H., B.K.P., P.P.), Department of Infectious Diseases and CMRC, Rigshospitalet, Copenhagen, Denmark; Department of General Surgery and Laboratory of General Surgery (S.C.), Xinhua Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Biliary Tract Diseases Research (S.C.), Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Endocrinology (M.H., H.U.H., R.L., C.W.), Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University Tuebingen, Germany; Department of Hepatology (J.O.C.), Rigshospitalet, Copenhagen, Denmark; Department of Anaesthesiology (N.H.S.), The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tuebingen (H.U.H., R.L., C.W.), Tuebingen, Germany; and German Center for Diabetes Research (H.U.H., R.L., C.W.), Germany
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Iborra S, Lehmann R, Hirschfeld M, Jäger M, Erbes T, Stickeler E. MicroRNA Expressionsmuster und potenzielle Auswirkungen auf Ovarialkarzinom Therapie in Vitro. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592736] [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] Open
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Klingebiel R, Zimmer C, Rogalla P, Kivelitz D, Bohner G, Götze R, Lehmann R. Assessment of the arteriovenous cerebrovascular system by multi-slice CT: A single-bolus, monophasic protocol. Acta Radiol 2016; 42:560-2. [PMID: 11736701 DOI: 10.1080/028418501127347377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: We present a protocol for the non-invasive angiographic assessment of the arterial and venous cerebrovascular (CV) system by multi-slice CT. Material and Methods: Data acquisition was performed in a multi-slice CT scanner with a scan range from the carotid bifurcation to the vertex and manual scan start following i.v. administration of 120 ml iodinated contrast medium with a flow rate of 4 ml/s. This protocol was applied in 12 patients with symptoms of acute CV insuffiency. Results: In all patients, comprehensive imaging of the arteriovenous CV system was achieved including the common carotid bifurcation, the third segment of the major cerebral arteries, the dural sinus and the internal cerebral veins. Various CV pathologies, such as a territorial artery occlusion, a thrombotic obstruction of the internal carotid artery, an intracranial arteriovenous malformation and a sinus vein thrombosis, were successfully evaluated. Conclusion: Comprehensive assessment of the arteriovenous CV system is possible by the use of a single-bolus, monophasic multi-slice scan technique.
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Affiliation(s)
- R Klingebiel
- Neuroradiology Section, Department of Radiology, Department of Radiology, Charité CM, Humboldt University, Berlin, Germany
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Klingebiel R, Bockmühl U, Werbs M, Freigang B, Vorwerk W, Thieme N, Lehmann R. Visualization of inner ear dysplasias in patients with sensorineural hearing loss: High-resolution MR imaging and volume-rendered reconstructions. Acta Radiol 2016; 42:574-81. [PMID: 11736704 DOI: 10.1080/028418501127347403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: We evaluated a data acquisition and post-processing protocol for inner ear (IE) assessment by MR imaging in patients, suffering from various labyrinth malformations. Material and Methods: MR IE studies of 158 consecutive patients (316 IEs) suffering from sensorineural hearing loss without evidence of an acoustic neurinoma were reviewed for pathologies of the IE and internal acoustic meatus. High-resolution MR data of all abnormal IE studies (n=45) were post-processed to previously standardized 3D volume rendered (VR) reconstructions. Results: In 9 patients (5.7%) the following IE dysplasias were detected: malformation of the cochlea (6 IEs), vestibulum (4 IEs), semicircular canals (12 IEs) and vestibular aqueduct/endolymphatic sac (10 IEs). One patient showed evidence of an aplasia of the vestibulocochlear nerve. In 4 patients multiple IE dysplasias were encountered. Comprehensive 3D visualization of all labyrinthine dysplasias was achieved by the use of two VR reconstructions. The overall time for bilateral IE assessment amounted to 30-35 min. Conclusion: The imaging protocol allows for rapid and comprehensive visualization of various IE dysplasias, based on a limited number of VR reconstructions.
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Affiliation(s)
- R Klingebiel
- Neuroradiology Section, Department of Radiology, Charité Campus Mitte, Humboldt University, Berlin, Germany
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Beckert A, Wiesner J, Schmidtberg H, Lehmann R, Baumann A, Vogel H, Vilcinskas A. Expression and characterization of a recombinant i-type lysozyme from the harlequin ladybird beetle Harmonia axyridis. Insect Mol Biol 2016; 25:202-15. [PMID: 26778648 DOI: 10.1111/imb.12213] [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] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Lysozymes are enzymes that destroy bacterial cell walls by hydrolysing the polysaccharide component of peptidoglycan. In insects, there are two classes of lysozymes, the c-type with muramidase activity and the i-type whose prototypical members from annelids and molluscs possess both muramidase and isopeptidase activities. Many insect genes encoding c-type and i-type lysozymes have been identified during genome and transcriptome analyses, but only c-type lysozymes have been functionally characterized at the protein level. Here we produced one of five i-type lysozymes represented in the immunity-related transcriptome of the invasive harlequin ladybird beetle Harmonia axyridis as recombinant protein. This was the only one containing the serine and histidine residues that are thought to be required for isopeptidase activity. This i-type lysozyme was recombinantly expressed in the yeast Pichia pastoris, but the purified protein was inactive in both muramidase and isopeptidase assays. Transcription and immunofluorescence analysis revealed that this i-type lysozyme is produced in the fat body but is not inducible by immune challenge. These data suggest that i-type lysozymes in insects may have acquired novel and as yet undetermined functions in the course of evolution.
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Affiliation(s)
- A Beckert
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - J Wiesner
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - H Schmidtberg
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - R Lehmann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - A Baumann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - H Vogel
- Department of Entomology, Max-Planck-Institute for Chemical Ecology, Jena, Germany
| | - A Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
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21
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Berg JM, Bhalla N, Bourne PE, Chalfie M, Drubin DG, Fraser JS, Greider CW, Hendricks M, Jones C, Kiley R, King S, Kirschner MW, Krumholz HM, Lehmann R, Leptin M, Pulverer B, Rosenzweig B, Spiro JE, Stebbins M, Strasser C, Swaminathan S, Turner P, Vale RD, VijayRaghavan K, Wolberger C. Preprints for the life sciences. Science 2016; 352:899-901. [DOI: 10.1126/science.aaf9133] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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22
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Kappler L, Li J, Hu C, Ohmayer U, Hauck S, Xu G, Häring HU, Weigert C, Lehmann R, Hoene M. Gesteigerte mitochondriale Atmung und Remodellierung von Lipiden in insulinresistenten C2C12 Myotuben. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580803] [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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23
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Reif S, Rottenkolber M, Ferrari U, Banning F, Freibothe I, Sacco V, Wichmann C, Hawlitschek C, Potzel A, Hetterich H, Sommer N, Grallert H, Lehmann R, Seißler J, Lechner A. Hohe Fetuin-A-Werte korrelieren mit geringer körperlicher Fitness und niedrigerer Insulinempfindlichkeit bei Frauen nach Gestationsdiabetes. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580924] [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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24
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Quteineh L, Bochud PY, Golshayan D, Crettol S, Venetz JP, Manuel O, Kutalik Z, Treyer A, Lehmann R, Mueller NJ, Binet I, van Delden C, Steiger J, Mohacsi P, Dufour JF, Soccal PM, Pascual M, Eap CB. CRTC2 polymorphism as a risk factor for the incidence of metabolic syndrome in patients with solid organ transplantation. Pharmacogenomics J 2015; 17:69-75. [PMID: 26644205 DOI: 10.1038/tpj.2015.82] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 09/11/2015] [Accepted: 10/16/2015] [Indexed: 12/27/2022]
Abstract
Metabolic syndrome after transplantation is a major concern following solid organ transplantation (SOT). The CREB-regulated transcription co-activator 2 (CRTC2) regulates glucose metabolism. The effect of CRTC2 polymorphisms on new-onset diabetes after transplantation (NODAT) was investigated in a discovery sample of SOT recipients (n1=197). Positive results were tested for replication in two samples from the Swiss Transplant Cohort Study (STCS, n2=1294 and n3=759). Obesity and other metabolic traits were also tested. Associations with metabolic traits in population-based samples (n4=46'186, n5=123'865, n6>100,000) were finally analyzed. In the discovery sample, CRTC2 rs8450-AA genotype was associated with NODAT, fasting blood glucose and body mass index (Pcorrected<0.05). CRTC2 rs8450-AA genotype was associated with NODAT in the second STCS replication sample (odd ratio (OR)=2.01, P=0.04). In the combined STCS replication samples, the effect of rs8450-AA genotype on NODAT was observed in patients having received SOT from a deceased donor and treated with tacrolimus (n=395, OR=2.08, P=0.02) and in non-kidney transplant recipients (OR=2.09, P=0.02). Moreover, rs8450-AA genotype was associated with overweight or obesity (n=1215, OR=1.56, P=0.02), new-onset hyperlipidemia (n=1007, OR=1.76, P=0.007), and lower high-density lipoprotein-cholesterol (n=1214, β=-0.08, P=0.001). In the population-based samples, a proxy of rs8450G>A was significantly associated with several metabolic abnormalities. CRTC2 rs8450G>A appears to have an important role in the high prevalence of metabolic traits observed in patients with SOT. A weak association with metabolic traits was also observed in the population-based samples.
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Affiliation(s)
- L Quteineh
- Department of Psychiatry, Unit of Pharmacogenetics and Clinical Psychopharmacology, Lausanne University Hospital, Prilly, Switzerland
| | - P-Y Bochud
- Service of Infectious Diseases, Lausanne University Hospital, Lausanne, Switzerland
| | - D Golshayan
- Transplant Center, Lausanne University Hospital, Lausanne, Switzerland
| | - S Crettol
- Department of Psychiatry, Unit of Pharmacogenetics and Clinical Psychopharmacology, Lausanne University Hospital, Prilly, Switzerland
| | - J-P Venetz
- Transplant Center, Lausanne University Hospital, Lausanne, Switzerland
| | - O Manuel
- Service of Infectious Diseases, Lausanne University Hospital, Lausanne, Switzerland.,Transplant Center, Lausanne University Hospital, Lausanne, Switzerland
| | - Z Kutalik
- Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - A Treyer
- Department of Psychiatry, Unit of Pharmacogenetics and Clinical Psychopharmacology, Lausanne University Hospital, Prilly, Switzerland
| | - R Lehmann
- Service of Endocrinology and Diabetes, University Hospital, Zurich, Switzerland
| | - N J Mueller
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital, Zurich, Switzerland
| | - I Binet
- Service of Nephrology and Transplantation Medicine, Kantonsspital, St Gallen, Switzerland
| | - C van Delden
- Service of Infectious Diseases, University Hospital, Geneva, Switzerland
| | - J Steiger
- Service of Nephrology, University Hospital, Basel, Switzerland
| | - P Mohacsi
- Departments of Cardiology Swiss Cardiovascular Centre, University Hospital, Bern, Switzerland
| | - J-F Dufour
- Department of Clinical Pharmacology, University Hospital, Bern, Switzerland
| | - P M Soccal
- Service of Pulmonary Medicine, University Hospital, Geneva, Switzerland
| | - M Pascual
- Transplant Center, Lausanne University Hospital, Lausanne, Switzerland
| | - C B Eap
- Department of Psychiatry, Unit of Pharmacogenetics and Clinical Psychopharmacology, Lausanne University Hospital, Prilly, Switzerland.,School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
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El-Battrawy I, Frambach D, Behnes M, Münz B, Lehmann R, Borggrefe M, Akin I. [Subcutaneous cervical and left thoracic emphysema in a 49-year-old woman on ventilation]. Internist (Berl) 2015; 56:1439-44. [PMID: 26530695 DOI: 10.1007/s00108-015-3823-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
We report the case of a 49-year-old woman who was admitted with community-acquired pneumonia. The medical state worsened despite administration of antibiotics. She was intubated and ventilated because of respiratory distress. Several hours after intubation, she developed massive subcutaneous emphysema. The bronchoscopy showed tracheal transmural rupture 3 cm long on the posterior wall of the trachea. The high-risk surgery and massive doses of catecholamine favoured conservative treatment with bilateral endobronchial intubation and veno-venous extracorporeal membrane oxygenation. The patient made a full recovery.
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Affiliation(s)
- I El-Battrawy
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland.
| | - D Frambach
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - M Behnes
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - B Münz
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - R Lehmann
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - M Borggrefe
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - I Akin
- I. Medizinische Klinik (Kardiologie, Angiologie, Pneumologie, Intensivmedizin und klinische Hämostaseologie), Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
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Baumann A, Lehmann R, Beckert A, Vilcinskas A, Franta Z. Selection and Evaluation of Tissue Specific Reference Genes in Lucilia sericata during an Immune Challenge. PLoS One 2015; 10:e0135093. [PMID: 26252388 PMCID: PMC4529112 DOI: 10.1371/journal.pone.0135093] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 07/16/2015] [Indexed: 11/30/2022] Open
Abstract
The larvae of the common green bottle fly Lucilia sericata (Diptera: Calliphoridae) have been used for centuries to promote wound healing, but the molecular basis of their antimicrobial, debridement and healing functions remains largely unknown. The analysis of differential gene expression in specific larval tissues before and after immune challenge could be used to identify key molecular factors, but the most sensitive and reproducible method qRT-PCR requires validated reference genes. We therefore selected 10 candidate reference genes encoding products from different functional classes (18S rRNA, 28S rRNA, actin, β-tubulin, RPS3, RPLP0, EF1α, PKA, GAPDH and GST1). Two widely applied algorithms (GeNorm and Normfinder) were used to analyze reference gene candidates in different larval tissues associated with secretion, digestion, and antimicrobial activity (midgut, hindgut, salivary glands, crop and fat body). The Gram-negative bacterium Pseudomonas aeruginosa was then used to boost the larval immune system and the stability of reference gene expression was tested in comparison to three immune genes (lucimycin, defensin-1 and attacin-2), which target different pathogen classes. We observed no differential expression of the antifungal peptide lucimycin, whereas the representative targeting Gram-positive bacteria (defensin-1) was upregulated in salivary glands, crop, nerve ganglion and reached its maximum in fat body (up to 300-fold). The strongest upregulation in all immune challenged tissues (over 50,000-fold induction in the fat body) was monitored for attacin-2, the representative targeting Gram-negative bacteria. Here we identified and validated a set of reference genes that allows the accurate normalization of gene expression in specific tissues of L. sericata after immune challenge.
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Affiliation(s)
- Andre Baumann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Rüdiger Lehmann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Annika Beckert
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Andreas Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute of Phytopathology and Applied Zoology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Zdeněk Franta
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- * E-mail:
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Abstract
The shift from 2D cultures to 3D cultures enables improvement in cell culture research due to better mimicking of in vivo cell behavior and environmental conditions. Different cell lines and applications require altered 3D constructs. The automation of the manufacturing and screening processes can advance the charge stability, quality, repeatability, and precision. In this study we integrated the automated production of three 3D cell constructs (alginate beads, spheroid cultures, pellet cultures) using the Biomek Cell Workstation and compared them with the traditional manual methods and their consequent bioscreening processes (proliferation, toxicity; days 14 and 35) using a high-throughput screening system. Moreover, the possible influence of antibiotics (penicillin/streptomycin) on the production and screening processes was investigated. The cytotoxicity of automatically produced 3D cell cultures (with and without antibiotics) was mainly decreased. The proliferation showed mainly similar or increased results for the automatically produced 3D constructs. We concluded that the traditional manual methods can be replaced by the automated processes. Furthermore, the formation, cultivation, and screenings can be performed without antibiotics to prevent possible effects.
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Affiliation(s)
- R Lehmann
- Center for Life Science Automation (celisca), University of Rostock, Rostock, Germany
| | - C Gallert
- Center for Life Science Automation (celisca), University of Rostock, Rostock, Germany
| | - T Roddelkopf
- Center for Life Science Automation (celisca), University of Rostock, Rostock, Germany
| | - S Junginger
- Institute of Automation, University of Rostock, Rostock, Germany
| | - K Thurow
- Center for Life Science Automation (celisca), University of Rostock, Rostock, Germany
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Lehmann R, Friedrich T, Krebiehl G, Sonntag D, Häring HU, Fritsche A, Hennige AM. Metabolic profiles during an oral glucose tolerance test in pregnant women with and without gestational diabetes. Exp Clin Endocrinol Diabetes 2015; 123:483-38. [PMID: 26171623 DOI: 10.1055/s-0035-1549887] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 01/22/2023]
Abstract
BACKGROUND/AIM Gestational diabetes (GDM) is a complex metabolic condition associated with hyperpglycemia that is diagnosed in an oral glucose tolerance test (OGTT) during pregnancy. For a deeper understanding of the pathology of the disease, further investigations during pregnancy are required, ideally under metabolic challenging conditions. METHODS We performed targeted metabolomics in a group of 24 well-matched women during an oral glucose tolerance test (OGTT). 231 plasma metabolites were profiled and compared to conventional clinical diagnostics. RESULTS A pattern of 8 metabolites differed between GDM and healthy controls as early as 30 min in an OGTT (AUC 0.977±0.008), and an increase in acylcarnitine C18:0, decreased concentrations of diacyl phosphatidylcholines (PC aa) C34:4, PC aa C36:4, PC aa C38:5, Lyso PC C20:4 and arachidonic acid were associated with insulin resistance. CONCLUSION Our data suggest an additional value of metabolite pattern in the diagnosis of GDM and describe altered pathways that might be subjected to a more precise diagnosis and individualized therapy.
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Affiliation(s)
- R Lehmann
- Division of Clinical Chemistry and Pathobiochemistry, University Hospital Tuebingen, Tuebingen, Germany
| | | | - G Krebiehl
- Biocrates Life Sciences, Innsbruck, Austria
| | - D Sonntag
- Biocrates Life Sciences, Innsbruck, Austria
| | - H-U Häring
- German Center for Diabetes Research (DZD), Tuebingen, Germany
| | - A Fritsche
- German Center for Diabetes Research (DZD), Tuebingen, Germany
| | - A M Hennige
- German Center for Diabetes Research (DZD), Tuebingen, Germany
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Hoene M, Li J, Häring HU, Xu G, Weigert C, Lehmann R. Muscle- and liver-specific alterations in lipid and acylcarnitine metabolism after a single bout of exercise in mice. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549695] [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: 10/23/2022]
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Lehmann R, Liu X, Hoene M, Peter A, Häring HU, Xu G. Wird die Probenqualität vieler Biobankproben überschätzt? Eine internationale Studie. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549702] [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: 10/23/2022]
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Lutz SZ, Hennenlotter J, Artati A, Todenhöfer T, Lehmann R, Adamski J, Stenzl A, Häring HU, Schwentner C, Staiger H, Heni M. Unterschiedliche Urin-Metabolit-Profile bei Diabetikern mit und ohne Prostata-Karzinom. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549632] [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: 10/23/2022]
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Lehmann R, Bauroth A. Gesundheitsberichterstattung im Landkreis Teltow-Fläming (Brandenburg) – Bericht des Gesundheitsamtes. Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1546905] [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: 10/23/2022]
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Lehmann R, Gallert C, Roddelkopf T, Junginger S, Wree A, Thurow K. 3 dimensional cell cultures: a comparison between manually and automatically produced alginate beads. Cytotechnology 2015; 68:1049-62. [PMID: 25842191 DOI: 10.1007/s10616-015-9861-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 02/13/2015] [Indexed: 01/12/2023] Open
Abstract
Cancer diseases are a common problem of the population caused by age and increased harmful environmental influences. Herein, new therapeutic strategies and compound screenings are necessary. The regular 2D cultivation has to be replaced by three dimensional cell culturing (3D) for better simulation of in vivo conditions. The 3D cultivation with alginate matrix is an appropriate method for encapsulate cells to form cancer constructs. The automated manufacturing of alginate beads might be an ultimate method for large-scaled manufacturing constructs similar to cancer tissue. The aim of this study was the integration of full automated systems for the production, cultivation and screening of 3D cell cultures. We compared the automated methods with the regular manual processes. Furthermore, we investigated the influence of antibiotics on these 3D cell culture systems. The alginate beads were formed by automated and manual procedures. The automated steps were processes by the Biomek(®) Cell Workstation (celisca, Rostock, Germany). The proliferation and toxicity were manually and automatically evaluated at day 14 and 35 of cultivation. The results visualized an accumulation and expansion of cell aggregates over the period of incubation. However, the proliferation and toxicity were faintly and partly significantly decreased on day 35 compared to day 14. The comparison of the manual and automated methods displayed similar results. We conclude that the manual production process could be replaced by the automation. Using automation, 3D cell cultures can be produced in industrial scale and improve the drug development and screening to treat serious illnesses like cancer.
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Affiliation(s)
- R Lehmann
- Center for Life Science Automation (celisca), University of Rostock, Friedrich-Barnewitz Str. 8, 18119, Rostock, Germany.
| | - C Gallert
- Center for Life Science Automation (celisca), University of Rostock, Friedrich-Barnewitz Str. 8, 18119, Rostock, Germany
| | - T Roddelkopf
- Center for Life Science Automation (celisca), University of Rostock, Friedrich-Barnewitz Str. 8, 18119, Rostock, Germany
| | - S Junginger
- Institute of Automation, University Rostock, Rostock, Germany
| | - A Wree
- Institute of Anatomy, University Rostock, Rostock, Germany
| | - K Thurow
- Center for Life Science Automation (celisca), University of Rostock, Friedrich-Barnewitz Str. 8, 18119, Rostock, Germany
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Steffens S, Schrader A, Lehmann R, Eggers H, Ising S, Pfister D, Riechert-Mühe N, Leitenberger A, Heidenreich A, Thon W, Merseburger A, Kuczyk M. Blickdiagnose bei der transurethralen Resektion von Harnblasentumoren. Urologe A 2014; 53:1639-43. [DOI: 10.1007/s00120-014-3585-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Endres H, Keller HJ, Lehmann R, Poveda A, Rupp HH, Sand HVD. Linear Chain Bis(α,β-dionedioximato)metal Compounds of the Nickel Triad: Solid State Design by Molecular Engineering. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1977-0508] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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
Chemical and structural data of numerous bis(α,β-dionedioximato)metal(II) compounds are summarized. All of them crystallize in columns but principally two different kinds of molecular arrangements occur in the solids. In one phase the molecular planes are inclined to the direction of the linear metal chains with an angle different from 90°. This allows only indirect interactions between the metal ions via the ligand. (“M—L—M” stacking.) The other modification consists of molecules with their planes perpendicular to the M—M-chains. This form allows direct metal-metal contacts (“M—M” modification). Depending on a few molecular parameters a “M—L—M” or a “M—M” stacking is obtained upon crystallization. Since for those compounds which could be isolated in both modifications the M—L—M form has the higher density it is concluded that only stronger M—M interactions stabilize the less dense M—M forms.
A wide range of metal-metal separations with a lower limit of 3.15 Å in mixed valence systems are found in different “M—M” compounds. In any case the intrachain metal-metal distances are reduced considerably upon oxidation of the bivalent complex molecules. The influence of “electronic” and “sterical” parameters of the complex molecules on the intermolecular metal interactions and on the type of columns in the solid state is discussed.
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Affiliation(s)
- H. Endres
- Anorganisch-Chemisches Institut der Universität Heidelberg
| | - H. J. Keller
- Anorganisch-Chemisches Institut der Universität Heidelberg
| | - R. Lehmann
- Anorganisch-Chemisches Institut der Universität Heidelberg
| | - A. Poveda
- Anorganisch-Chemisches Institut der Universität Heidelberg
| | - H. H. Rupp
- Anorganisch-Chemisches Institut der Universität Heidelberg
| | - H. Van De Sand
- Anorganisch-Chemisches Institut der Universität Heidelberg
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Klingler C, Wolf M, Suhm T, Li J, Chen S, Zhao X, Schleicher E, Häring HU, Xu G, Lehmann R, Weigert C. Lysophosphatidylcholine als Regulatoren der Genexpression humaner Skelettmuskelzellen. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zuellig RA, Cavallari G, Gerber P, Tschopp O, Spinas GA, Moritz W, Lehmann R. Improved physiological properties of gravity-enforced reassembled rat and human pancreatic pseudo-islets. J Tissue Eng Regen Med 2014; 11:109-120. [PMID: 24737702 DOI: 10.1002/term.1891] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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: 07/19/2013] [Revised: 12/20/2013] [Accepted: 02/26/2014] [Indexed: 01/01/2023]
Abstract
Previously we demonstrated the superiority of small islets vs large islets in terms of function and survival after transplantation, and we generated reaggregated rat islets (pseudo-islets) of standardized small dimensions by the hanging-drop culture method (HDCM). The aim of this study was to generate human pseudo-islets by HDCM and to evaluate and compare the physiological properties of rat and human pseudo-islets. Isolated rat and human islets were dissociated into single cells and incubated for 6-14 days by HDCM. Newly formed pseudo-islets were analysed for dimensions, morphology, glucose-stimulated insulin secretion (GSIS) and total insulin content. The morphology of reaggregated human islets was similar to that of native islets, while rat pseudo-islets had a reduced content of α and δ cells. GSIS of small rat and human pseudo-islets (250 cells) was increased up to 4.0-fold (p < 0.01) and 2.5-fold (p < 0.001), respectively, when compared to their native counterparts. Human pseudo-islets showed a more pronounced first-phase insulin secretion as compared to intact islets. GSIS was inversely correlated to islet size, and small islets (250 cells) contained up to six-fold more insulin/cell than large islets (1500 cells). Tissue loss with this new technology could be reduced to 49.2 ± 1.5% in rat islets, as compared to the starting amount. With HDCM, pseudo-islets of standardized size with similar cellular composition and improved biological function can be generated, which compensates for tissue loss during production. Transplantation of small pseudo-islets may represent an attractive strategy to improve graft survival and function, due to better oxygen and nutrient supply during the phase of revascularization. Copyright © 2014 John Wiley & Sons, Ltd.
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Affiliation(s)
- R A Zuellig
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland
| | - G Cavallari
- Nephrology, Dialysis and Transplantation Unit (Stefoni), S.Orsola-Malpighi Hospital, University of Bologna, Italy
| | - P Gerber
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland
| | - O Tschopp
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland
| | - G A Spinas
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland
| | - W Moritz
- InSphero AG, Schlieren, Switzerland
| | - R Lehmann
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland
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Tuluce K, Yakar Tuluce S, Isayev E, Bilgin M, Yavuzgil O, Gurgun C, Nalbantgil S, Soydas Cinar C, Ozerkan F, Brandao Da Silva D, Lehmann R, Prinz C, Horstkotte D, Faber L, Assabiny A, Apor A, Nagy A, Vago H, Toth A, Merkely B, Kovacs A, Miglioranza M, Muraru D, Peluso D, Cucchini U, Mihaila S, Naso P, Puma L, Kocabay G, Iliceto S, Badano L, Marek J, Ahmed M, Ryo K, Haugaa K, Saba S, Gorcsan J. Club 35 Moderated Poster Session - Part B: 11/12/2013, 09:30-16:00 * Location: Moderated Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet216] [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: 11/13/2022] Open
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39
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Hundertmark-Zaušková A, Lehmann R, Hess M, Müller F. Numerical simulation of glottal flow. Comput Biol Med 2013; 43:2177-85. [DOI: 10.1016/j.compbiomed.2013.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 08/02/2013] [Accepted: 09/10/2013] [Indexed: 10/26/2022]
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40
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Leistner DM, Fichtlscherer S, Thome C, Boeckel N, Roexe T, Ardogan M, Lehmann R, Seeger FH, Dimmeler S, Zeiher AM. OCT-derived coronary plaque morphology and transcoronary concentration gradients of vessel wall-associated microRNAs. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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41
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Damms Machado A, Grundler F, Friedrich A, Kramer M, Meile T, Lehmann R, Bischoff S. PP217-SUN CHANGES IN THE PLASMA METABOLOME DURING DIETARY VS SURGICAL RESTRICTIVE WEIGHT LOSS THERAPY IN OBESE SUBJECTS WITH IDENTICAL WEIGHT LOSS. Clin Nutr 2013. [DOI: 10.1016/s0261-5614(13)60262-9] [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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42
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Spiesshoefer J, Heinrich J, Lehmann R, Efken C, Bitter T, Koerber B, Fox H, Horstkotte D, Oldenburg O. Influence of adaptive servoventilation therapy on pCO2 levels in heart failure patients with Cheyne-Stokes respiration and healthy volunteers. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2491] [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: 11/13/2022] Open
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43
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Prinz C, Lehmann R, Brandao Da Silva D, Bitter T, Van Buuren F, Lamp B, Horstkotte D, Faber L. Left ventricular dyssynchrony predicts clinical response to CRT: a long-term follow-up single center prospective observational cohort study. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5089] [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: 11/15/2022] Open
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44
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Honold J, Thieme F, Zeuzem S, Serve H, Fichtlscherer S, Zeiher A, Walcher F, Marzi I, Lehmann R. Internistische Patienten in einer universitären Notaufnahme: Charakterisierung und ökonomische Bedeutung für das Gesamtklinikum. Dtsch Med Wochenschr 2013; 138:1401-5. [DOI: 10.1055/s-0033-1343231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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)
- J. Honold
- Medizinische Klinik III, Universitätsklinikum Frankfurt am Main
| | - F. Thieme
- Medizinische Klinik III, Universitätsklinikum Frankfurt am Main
| | - S. Zeuzem
- Medizinische Klinik I, Universitätsklinikum Frankfurt am Main
| | - H. Serve
- Medizinische Klinik II, Universitätsklinikum Frankfurt am Main
| | | | - A. Zeiher
- Medizinische Klinik III, Universitätsklinikum Frankfurt am Main
| | - F. Walcher
- Klinik für Unfall- und Wiederherstellungschirurgie, Universitätsklinikum Frankfurt am Main
| | - I. Marzi
- Klinik für Unfall- und Wiederherstellungschirurgie, Universitätsklinikum Frankfurt am Main
| | - R. Lehmann
- Medizinische Klinik III, Universitätsklinikum Frankfurt am Main
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45
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Fujii T, Suzuki S, Shinozaki M, Tanaka H, Bell S, Cooper S, Lomonte C, Libutti P, Chimienti D, Casucci F, Bruno A, Antonelli M, Lisi P, Cocola L, Basile C, Negri A, Del Valle E, Zanchetta M, Zanchetta J, Di Vico MC, Ferraresi M, Pia A, Aroasio E, Gonella S, Mongilardi E, Clari R, Moro I, Piccoli GB, Gonzalez-Parra E, Rodriguez-Osorio L, Ortiz-Arduan A, de la Piedra C, Egido J, Perez Gomez MV, Tabikh AA, Afsar B, Kirkpantur A, Imanishi Y, Yamagata M, Nagata Y, Ohara M, Michigami T, Yukimura T, Inaba M, Bieber B, Robinson B, Mariani L, Jacobson S, Frimat L, Bommer J, Pisoni R, Tentori F, Ciceri P, Elli F, Brancaccio D, Cozzolino M, Adamczak M, Wiecek A, Kuczera P, Sezer S, Bal Z, Tutal E, Kal O, Yavuz D, Y ld r m I, Sayin B, Ozelsancak R, Ozkurt S, Turk S, Ozdemir N, Lehmann R, Roesel M, Fritz P, Braun N, Ulmer C, Steurer W, Dagmar B, Ott G, Dippon J, Alscher D, Kimmel M, Latus J, Turkvatan A, Balci M, Mandiroglu S, Seloglu B, Alkis M, Serin M, Calik Y, Erkula S, Gorboz H, Afsar B, Mandiroglu F, Kirkpantur A, Lindley E, Cruz Casal M, Rogers S, Pancirova J, Kernc J, Copley JB, Fouque D, Kiss I, Kiss Z, Szabo A, Szegedi J, Balla J, Ladanyi E, Csiky B, orkossy O, Torok M, Turi S, Ambrus C, Deak G, Tisler A, Kulcsar I, K d r V, Altuntas A, Akp nar A, Orhan H, Sezer M, Filiopoulos V, Manolios N, Arvanitis D, Pani I, Panagiotopoulos K, Vlassopoulos D, Rodriguez-Ortiz ME, Canalejo A, Herencia C, Martinez-Moreno JM, Peralta-Ramirez A, Perez-Martinez P, Navarro-Gonzalez JF, Rodriguez M, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Munoz-Castaneda JR, Almaden Y, Munoz-Castaneda JR, Peralta-Ramirez A, Rodriguez-Ortiz M, Herencia C, Martinez-Moreno J, Lopez I, Aguilera-Tejero E, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Rodriguez M, Almaden Y, Hanafusa N, Masakane I, Ito S, Nakai S, Maeda K, Suzuki H, Tsunoda M, Ikee R, Sasaki N, Sato M, Hashimoto N, Wang MH, Hung KY, Chiang CK, Huang JW, Lu KC, Lang CL, Okano K, Yamashita T, Tsuruta Y, Hibi A, Miwa N, Kimata N, Tsuchiya K, Nitta K, Akiba T, Sasaki N, Tsunoda M, Ikee R, Sato M, Hashimoto N, Harb L, Komaba H, Kakuta T, Suzuki H, Suga T, Fukagawa M, Kikuchi H, Shimada H, Karasawa R, Suzuki M, Zhelyazkova-Savova M, Gerova D, Paskalev D, Ikonomov V, Zortcheva R, Galunska B, Jean G, Deleaval P, Hurot JM, Lorriaux C, Mayor B, Chazot C, Vannucchi H, Vannucchi MT, Martins JC, Merino JL, Teruel JL, Fernandez-Lucas M, Villafruela JJ, Bueno B, Gomis A, Paraiso V, Quereda C, Ibrahim FH, Fadhlina NZ, Ng EK, Thong KM, Goh BL, Sulaiman DM, Fatimah DAN, Evi DO, Siti SR, Wilson RJ, Keith M, Copley JB, Gros B, Galan A, Gonzalez-Parra E, Herrero JA, Oyaguez I, Keith M, Casado MA, Lucisano S, Coppolino G, Villari A, Cernaro V, Lupica R, Trimboli D, Aloisi C, Buemi M. CKD-MBD II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft149] [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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Grenfell JL, Gebauer S, Godolt M, Palczynski K, Rauer H, Stock J, von Paris P, Lehmann R, Selsis F. Potential biosignatures in super-Earth atmospheres II. Photochemical responses. Astrobiology 2013; 13:415-438. [PMID: 23683046 PMCID: PMC3941937 DOI: 10.1089/ast.2012.0926] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 02/19/2013] [Indexed: 06/01/2023]
Abstract
Spectral characterization of super-Earth atmospheres for planets orbiting in the habitable zone of M dwarf stars is a key focus in exoplanet science. A central challenge is to understand and predict the expected spectral signals of atmospheric biosignatures (species associated with life). Our work applies a global-mean radiative-convective-photochemical column model assuming a planet with an Earth-like biomass and planetary development. We investigated planets with gravities of 1g and 3g and a surface pressure of 1 bar around central stars with spectral classes from M0 to M7. The spectral signals of the calculated planetary scenarios have been presented by in an earlier work by Rauer and colleagues. The main motivation of the present work is to perform a deeper analysis of the chemical processes in the planetary atmospheres. We apply a diagnostic tool, the Pathway Analysis Program, to shed light on the photochemical pathways that form and destroy biosignature species. Ozone is a potential biosignature for complex life. An important result of our analysis is a shift in the ozone photochemistry from mainly Chapman production (which dominates in Earth's stratosphere) to smog-dominated ozone production for planets in the habitable zone of cooler (M5-M7)-class dwarf stars. This result is associated with a lower energy flux in the UVB wavelength range from the central star, hence slower planetary atmospheric photolysis of molecular oxygen, which slows the Chapman ozone production. This is important for future atmospheric characterization missions because it provides an indication of different chemical environments that can lead to very different responses of ozone, for example, cosmic rays. Nitrous oxide, a biosignature for simple bacterial life, is favored for low stratospheric UV conditions, that is, on planets orbiting cooler stars. Transport of this species from its surface source to the stratosphere where it is destroyed can also be a key process. Comparing 1g with 3g scenarios, our analysis suggests it is important to include the effects of interactive chemistry.
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Affiliation(s)
- J L Grenfell
- Zentrum für Astronomie und Astrophysik, Technische Universität Berlin, Berlin, Germany.
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47
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Klingler C, Wolf M, Suhm T, Li J, Chen S, Zhao X, Schleicher E, Häring HU, Xu G, Lehmann R, Weigert C. Lysophosphatidylcholine sind Mediatoren der Lipotoxizität in humanen Skelettmuskelzellen. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341720] [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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48
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Lehmann R, Yin P, Peter A, Franken H, Zhao X, Neukamm SS, Zell A, Xu G, Häring HU. Biomarker zur Beurteilung der Qualität von Biobankproben. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341927] [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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49
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Wolf M, Chen S, Zhao X, Scheler M, Irmler M, Staiger H, Beckers J, Hrabé de Angelis M, Fritsche A, Häring HU, Schleicher ED, Xu G, Lehmann R, Weigert C. Die Bildung und Freisetzung von Acylcarnitinen in primären humanen Myotuben spiegelt die Unterschiede der Nüchtern-Fettoxidation der Probanden wider. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341719] [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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Gerber PA, Locher R, Schmid B, Spinas GA, Lehmann R. Smoking is associated with impaired long-term glucose metabolism in patients with type 1 diabetes mellitus. Nutr Metab Cardiovasc Dis 2013; 23:102-108. [PMID: 22118957 DOI: 10.1016/j.numecd.2011.08.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Revised: 07/23/2011] [Accepted: 08/24/2011] [Indexed: 10/15/2022]
Abstract
BACKGROUND AND AIMS Smoking is known to negatively influence glucose metabolism both in healthy subjects and in patients with diabetes. The aim of this study was to compare glycemic control in patients with type 1 diabetes mellitus who were smokers with those who did not smoke during a prospective long-term follow-up. METHODS AND RESULTS In a single center, 763 patients with type 1 diabetes mellitus were included, 160 (21.0%) of them were smokers. Patients were treated with intensive insulin therapy according to existing guidelines. Glucose control was monitored quarterly, diabetes related complications and cardiovascular risk factors were assessed at least once a year. Glucose control in smokers was significantly worse than in non-smokers at baseline and during follow-up (mean HbA1c during 5047 patient-years of follow-up 7.9 ± 1.3% in smokers and 7.3 ± 1.1% in non-smokers, p < 0.001) despite a higher insulin dosage in smokers (0.71 ± 0.30 U/kg vs. 0.65 ± 0.31 U/kg in non-smokers, p = 0.046). HDL cholesterol was lower in smokers at baseline (1.53 ± 0.45 vs. 1.68 ± 0.51 in non-smokers, p = 0.048). Diabetes related complications tended to occur with a higher frequency in smokers, with a significant difference in macroalbuminuria (9.8% vs. 4.8% in non-smokers, p = 0.047). CONCLUSION Smoking is associated with worse glucose control in patients with type 1 diabetes mellitus despite the same treatment strategies as in non-smokers. Hyperglycemia, therefore, may contribute to an earlier incidence of diabetes related complications in these patients, in addition to direct toxic effects of smoking.
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Affiliation(s)
- P A Gerber
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Switzerland.
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