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Gimeno-Ferrer F, Eitner A, Schaible HG, Richter F. Galanin diminishes cortical spreading depolarization across rodents - A candidate for treatment? Neurosci Lett 2024; 832:137814. [PMID: 38723760 DOI: 10.1016/j.neulet.2024.137814] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/29/2024] [Accepted: 05/06/2024] [Indexed: 05/12/2024]
Abstract
Galanin (Gal) is a neuropeptide with the potential to ameliorate cortical spreading depolarization (CSD), an electrophysiological phenomenon occurring after brain injury or in migraine aura. Gal is expressed in all cortical neurons both in rat and in mouse cortices. Here we investigated whether the effect of Gal on CSD previously described in the rat is conserved in the mouse cortex. In rats, the topical application of Gal to the cortex for 1 h did not induce any change in CSD amplitudes, propagation velocity, or threshold of elicitation. Rather, topical application of Gal for 3 h was necessary to obtain a significant decrease in these CSD parameters and to develop a remarkable increase in the KCl threshold to elicit a CSD in rat cortex. In contrast, the topical application of Gal on cortical surface for 1 h in mice was sufficient to significantly attenuate CSD amplitudes and increase threshold. A thinner cortex, a faster diffusion or different affinity/expression of receptors for Gal are possible reasons to explain this difference in the time course between rats and mice. Our data are relevant to postulate Gal as a potential target for inhibition of CSD under pathological situations such as stroke or ischemia. SIGNIFICANCE STATEMENT: The neuropeptide Galanin (Gal) is expressed in all neurons throughout the cerebral cortex, both in rats and mice, and is able to reduce or even inhibit Cortical Spreading Depolarization, thus, Gal has the potential to control neuronal excitability that may identify Gal as a target in drug development against CSD.
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Affiliation(s)
- Fátima Gimeno-Ferrer
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, D-07740 Jena, Germany; Present address: University of Augsburg, Faculty of Medicine, Institute for Theoretical Medicine, Vascular Biology Lab, D-86159 Augsburg, Germany
| | - Annett Eitner
- Department of Trauma, Hand and Reconstructive Surgery, Experimental Trauma Surgery, Jena University Hospital, D-07740 Jena, Germany
| | - Hans-Georg Schaible
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, D-07740 Jena, Germany
| | - Frank Richter
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, D-07740 Jena, Germany.
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Gimeno-Ferrer F, Eitner A, Bauer R, Lehmenkühler A, Schaible HG, Richter F. Cortical spreading depolarization is a potential target for rat brain excitability modulation by Galanin. Exp Neurol 2023; 370:114569. [PMID: 37827229 DOI: 10.1016/j.expneurol.2023.114569] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 08/24/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
The inhibitory neuropeptide Galanin (Gal) has been shown to mediate anticonvulsion and neuroprotection. Here we investigated whether Gal affects cortical spreading depolarization (CSD). CSD is considered the pathophysiological neuronal mechanism of migraine aura, and a neuronal mechanism aggravating brain damage upon afflictions of the brain. Immunohistochemistry localized Gal and the Gal receptors 1-3 (GalR1-3) in native rat cortex and evaluated microglial morphology after exposure to Gal. In anesthetized rats, Gal was applied alone and together with the GalR antagonists M40, M871, or SNAP 37889 locally to the exposed cortex. The spontaneous electrocorticogram and CSDs evoked by remote KCl pressure microinjection were measured. In rat cortex, Gal was present in all neurons of all cortical layers, but not in astrocytes, microglia and vessels. GalR2 and GalR3 were expressed throughout all neurons, whereas GalR1 was preponderantly located at neurons in layers IV and V, but only in about half of the neurons. In susceptible rats, topical application of Gal on cortex decreased CSD amplitude, slowed CSD propagation velocity, and increased the threshold for KCl to ignite CSD. In some rats, washout of previously applied Gal induced periods of epileptiform patterns in the electrocorticogram. Blockade of GalR2 by M871 robustly prevented all Gal effects on CSD, whereas blockade of GalR1 or GalR3 was less effective. Although microglia did not express GalRs, topical application of Gal changed microglial morphology indicating microglial activation. This effect of Gal on microglia was prevented by blocking neuronal GalR2. In conclusion, Gal has the potential to ameliorate CSD thus reducing pathophysiological neuronal events caused by or associated with CSD.
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Affiliation(s)
- Fátima Gimeno-Ferrer
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, Jena D-07740, Germany
| | - Annett Eitner
- Department of Trauma, Hand and Reconstructive Surgery, Experimental Trauma Surgery, Jena University Hospital, Jena D-07740, Germany
| | - Reinhard Bauer
- Institute of Molecular Cell Biology, CMB-Center for Molecular Biomedicine, Jena University Hospital, Jena D-07740, Germany
| | | | - Hans-Georg Schaible
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, Jena D-07740, Germany
| | - Frank Richter
- Institute of Physiology 1/Neurophysiology, Jena University Hospital, Jena D-07740, Germany.
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Makuch WA, Wanke S, Ditsch B, Richter F, Herklotz V, Ahlborn J, Ritz CM. Population genetics and plant growth experiments as prerequisite for conservation measures of the rare European aquatic plant Luronium natans (Alismataceae). Front Plant Sci 2023; 13:1069842. [PMID: 36714738 PMCID: PMC9880460 DOI: 10.3389/fpls.2022.1069842] [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] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
Information provided by population genetic studies is often necessary to effectively protect endangered species. In general, such data is scarce for aquatic plants and this holds also for Luronium natans, an aquatic macrophyte endemic to northwestern and western Europe. It is threatened across its whole distribution range due to human influences, in particular due to eutrophication and intensive fish farming. In spite of habitat protection populations continue to decline and re-introductions are one possibility to prevent the species' extinction. Therefore, insights in genetic diversity and relatedness of source populations is warranted. Thus, we performed Amplified Fragment-Length Polymorphism (AFLP) on two large populations in Saxony, Germany (Großenhainer Pflege and Niederspree), complemented with numerous additional occurrences from Europe. In addition, we conducted experiments on plant growth to assess optimal conditions for ex-situ cultivation taking water temperature, water level and substrate into account. We revealed considerably high levels of genetic diversity within populations (Shannon Indices ranged from 0.367 to 0.416) implying that populations are not restricted to clonal growth only but reproduce also by open-pollinated flowers. Remarkably, the two geographically close Saxon populations were genetically distant to each other but subpopulations within a locality were completely intermingled. Concerning optimal cultivation conditions, longest roots were obtained at temperatures >14°C and saturated, but not submerging water levels. Thus, our findings advocate for a re-introduction scheme from nearby source populations and provide detailed information on successful ex-situ cultivation.
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Affiliation(s)
- Weronika A. Makuch
- Institute of Biology, Geobotany and Botanical Garden, Martin-Luther University Halle, Halle, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institut für Botanik, Fakultät Biologie, Technische Universität Dresden, Dresden, Germany
| | - Stefan Wanke
- Institut für Botanik, Fakultät Biologie, Technische Universität Dresden, Dresden, Germany
- Departamento de Botanica, Instituto de Biología, Universidad Nacional Autonoma de Mexico, Distrito Federal, Mexico
| | - Barbara Ditsch
- Botanischer Garten der Technischen Universität Dresden, Dresden, Germany
| | - Frank Richter
- Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie, Dresden, Germany
| | - Veit Herklotz
- Senckenberg Museum for Natural History Görlitz, Senckenberg – Member of the Leibniz Association, Görlitz, Germany
| | - Julian Ahlborn
- Senckenberg Museum for Natural History Görlitz, Senckenberg – Member of the Leibniz Association, Görlitz, Germany
| | - Christiane M. Ritz
- Senckenberg Museum for Natural History Görlitz, Senckenberg – Member of the Leibniz Association, Görlitz, Germany
- Professur für Biodiversität der Pflanzen, Internationales Hochschulinstitut (IHI) Zittau, Technische Universität Dresden, Zittau, Germany
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Netsch N, Simons M, Feil A, Leibold H, Richter F, Slama J, Yogish SP, Greiff K, Stapf D. Recycling of polystyrene-based external thermal insulation composite systems - Application of combined mechanical and chemical recycling. Waste Manag 2022; 150:141-150. [PMID: 35834862 DOI: 10.1016/j.wasman.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/07/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
The material recycling of complex waste streams such as external thermal insulation composite systems (ETICS) is challenging, which is why their recycling in the sense of a circular economy is currently hardly established. Therefore, the combined mechanical and thermochemical recycling of ETICS based on expanded polystyrene (EPS) is investigated experimentally and by simulating full process chains in order to evaluate circular economy opportunities. Model ETICS as example for building and construction waste is pretreated mechanically, followed by either pyrolysis and / or gasification steps, and full mass and energy balances are derived. By the combined recycling, inorganic compounds can be separated to a large extent allowing a pre-concentrate generation. The plastic-rich pre-concentrate is converted into either pyrolysis oil with a high styrene monomer content of 51 wt% or to synthesis gas in the subsequent thermochemical conversions. The holistic approach enables a high carbon recycling rate between 53 and 68 wt%. In addition, the investigation reveals technology limitations and opportunities to be further developed and optimized.
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Affiliation(s)
- Niklas Netsch
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
| | - Martin Simons
- RWTH Aachen University, Department of Anthropogenic Material Cycles, Wuellnerstrasse 2, Aachen 52062, Germany.
| | - Alexander Feil
- RWTH Aachen University, Department of Anthropogenic Material Cycles, Wuellnerstrasse 2, Aachen 52062, Germany.
| | - Hans Leibold
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
| | - Frank Richter
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
| | - Julia Slama
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
| | - Savina Padumane Yogish
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
| | - Kathrin Greiff
- RWTH Aachen University, Department of Anthropogenic Material Cycles, Wuellnerstrasse 2, Aachen 52062, Germany.
| | - Dieter Stapf
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
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Affiliation(s)
- Michael Zeller
- Karlsruhe Institute of Technology (KIT) Institute for Technical Chemistry (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Niklas Netsch
- Karlsruhe Institute of Technology (KIT) Institute for Technical Chemistry (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Frank Richter
- Karlsruhe Institute of Technology (KIT) Institute for Technical Chemistry (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Hans Leibold
- Karlsruhe Institute of Technology (KIT) Institute for Technical Chemistry (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Dieter Stapf
- Karlsruhe Institute of Technology (KIT) Institute for Technical Chemistry (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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Netsch N, Richter F, Yogish S, Zeller M, Stapf D. Chemisches Recycling kunststoffhaltiger Abfälle – Das Potenzial der Pyrolyse. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055383] [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: 11/07/2022]
Affiliation(s)
- N. Netsch
- Karlsruher Institut für Technologie (KIT) Institut für Technische Chemie (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - F. Richter
- Karlsruher Institut für Technologie (KIT) Institut für Technische Chemie (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - S. P. Yogish
- Karlsruher Institut für Technologie (KIT) Institut für Technische Chemie (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - M. Zeller
- Karlsruher Institut für Technologie (KIT) Institut für Technische Chemie (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - D. Stapf
- Karlsruher Institut für Technologie (KIT) Institut für Technische Chemie (ITC) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
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Schober M, Hohe J, Richter F, Judt P, Sauerwein C, Krumm M, Schäuble R, Schlimper R, Strubel V. Werkstoffeffiziente Auslegung und Herstellung gewickelter Innendruck‐Komponenten am Beispiel von Wasserstoff‐Hochdruckspeichern. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055438] [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: 11/07/2022]
Affiliation(s)
- M. Schober
- Fraunhofer-Institut für Werkstoffmechanik IWM Wöhlerstraße 11 79108 Freiburg im Breisgau Deutschland
| | - J. Hohe
- Fraunhofer-Institut für Werkstoffmechanik IWM Wöhlerstraße 11 79108 Freiburg im Breisgau Deutschland
| | - F. Richter
- Hexagon Purus GmbH Otto-Hahn-Straße 5 34123 Kassel Deutschland
| | - P. Judt
- Hexagon Purus GmbH Otto-Hahn-Straße 5 34123 Kassel Deutschland
| | - C. Sauerwein
- RayScan Technologies GmbH Klingleweg 8 88709 Meersburg Deutschland
| | - M. Krumm
- RayScan Technologies GmbH Klingleweg 8 88709 Meersburg Deutschland
| | - R. Schäuble
- Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS Otto-Hahn-Straße 1 06120 Halle (Saale) Deutschland
| | - R. Schlimper
- Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS Otto-Hahn-Straße 1 06120 Halle (Saale) Deutschland
| | - V. Strubel
- InnovationGreen Junkerfeldele 13 79211 Denzlingen Deutschland
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Eitner A, Richter F, Schaible HG. Physiologie der Schmerzentstehung in der Peripherie. AKTUEL RHEUMATOL 2020. [DOI: 10.1055/a-1203-1192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
ZusammenfassungDieser Beitrag gibt einen Überblick über den Kenntnisstand zu den
Mechanismen der Schmerzentstehung im Gelenk. Er fokussiert sich auf den Vorgang
der Nozizeption in nozizeptiven Nervenfasern des Gelenks und stellt dar, wie
Krankheitsprozesse im Gelenk auf Nozizeptoren wirken. Während
Nozizeptoren im normalen Gelenk eine hohe Erregungsschwelle besitzen und nur
durch hochintensive Reize aktiviert werden, kommt es bei Gelenkerkrankungen
häufig zu einer Sensibilisierung dieser Nervenfasern, sodass sie bereits
auf leichte Reize (Bewegungen, Palpation) ansprechen und nach zentraler
Verarbeitung Schmerzempfindungen auslösen. Eine Sensibilisierung wird
meistens durch Entzündungsmediatoren ausgelöst, für die
die Nozizeptoren Rezeptoren besitzen. Werden Nervenfasern im Erkrankungsprozess
geschädigt, können neuropathische Schmerzmechanismen
hinzukommen. Chronische Gelenkerkrankungen sind durch entzündliche und
destruktive Prozesse charakterisiert. Sowohl bei primären Arthritiden
als auch bei Arthrosen sind entzündliche Prozesse für die
Sensibilisierung der Nozizeptoren verantwortlich. Dafür werden neben den
Prostaglandinen auch proinflammatorische Zytokine und der Nervenwachstumsfaktor
(NGF) verantwortlich gemacht, für die viele Nozizeptoren Rezeptoren
exprimieren. Demgemäß sind diese Moleküle auch Target
innovativer Schmerztherapien, z. B. die Gabe von Antikörpern
gegen NGF bei Arthrose. Besonders für die Neutralisation von TNF ist ein
direkt schmerzlindernder Effekt nachgewiesen, der aus der Unterbrechung von
nozizeptiven Vorgängen am Nozizeptor resultiert. Der direkte
pronozizeptive Effekt der Zytokine und Bindungsstellen für Fc-Fragmente
von Antikörpern an Nozizeptoren zeigen, dass Immunmechanismen auch
für die Schmerzentstehung große Bedeutung haben. Auch
destruktive Gelenkprozesse können Schmerzen verursachen. So kann bereits
die Osteoklastenaktivität im präklinischen Stadium einer
Arthritis Schmerzen verursachen, und nach Ausbruch der Arthritis tragen
Destruktionsprozesse zu Schmerzen bei. Inwieweit die Hemmung der
Osteoklastenaktivität Gelenkschmerzen lindert, wird derzeit erforscht.
Auch weitere neue Ansätze, peripher wirksame Opioide, Cannabinoide und
Ionenkanalblocker werden dargestellt. Schließlich geht der Beitrag auf
generelle/systemische Faktoren ein, die Krankheitsprozesse im Gelenk und
die Schmerzentstehung beeinflussen. Hier wird in erster Linie die Bedeutung des
Diabetes mellitus angesprochen. Diese Stoffwechselerkrankung stellt einen
Risikofaktor für die Entwicklung von Arthrosen dar, und sie
trägt zur Schmerzintensivierung bei. Dabei können
verstärkte Entzündungsprozesse und auch neuropathische
Schmerzkomponenten beteiligt sein.
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Affiliation(s)
- Annett Eitner
- Klinik für Unfall-, Hand-, Wiederherstellungschirurgie,
Universitätsklinikum Jena, Jena
| | - Frank Richter
- Institut für Physiologie 1, Universitätsklinikum Jena,
Jena
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Richter F, Hoffman GE, Manheimer KB, Patel N, Sharp AJ, McKean D, Morton SU, DePalma S, Gorham J, Kitaygorodksy A, Porter GA, Giardini A, Shen Y, Chung WK, Seidman JG, Seidman CE, Schadt EE, Gelb BD. ORE identifies extreme expression effects enriched for rare variants. Bioinformatics 2020; 35:3906-3912. [PMID: 30903145 DOI: 10.1093/bioinformatics/btz202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 01/13/2019] [Accepted: 03/20/2019] [Indexed: 12/26/2022] Open
Abstract
MOTIVATION Non-coding rare variants (RVs) may contribute to Mendelian disorders but have been challenging to study due to small sample sizes, genetic heterogeneity and uncertainty about relevant non-coding features. Previous studies identified RVs associated with expression outliers, but varying outlier definitions were employed and no comprehensive open-source software was developed. RESULTS We developed Outlier-RV Enrichment (ORE) to identify biologically-meaningful non-coding RVs. We implemented ORE combining whole-genome sequencing and cardiac RNAseq from congenital heart defect patients from the Pediatric Cardiac Genomics Consortium and deceased adults from Genotype-Tissue Expression. Use of rank-based outliers maximized sensitivity while a most extreme outlier approach maximized specificity. Rarer variants had stronger associations, suggesting they are under negative selective pressure and providing a basis for investigating their contribution to Mendelian disorders. AVAILABILITY AND IMPLEMENTATION ORE, source code, and documentation are available at https://pypi.python.org/pypi/ore under the MIT license. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- F Richter
- Graduate School of Biomedical Sciences
| | - G E Hoffman
- Icahn Institute for Genomics and Multiscale Biology.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - N Patel
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A J Sharp
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - D McKean
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - S U Morton
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - S DePalma
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - J Gorham
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - A Kitaygorodksy
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - G A Porter
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY, USA
| | - A Giardini
- Cardiorespiratory Unit, Great Ormond Street Hospital and University College London, London, UK
| | - Y Shen
- Department of Systems Biology, Columbia University, New York, NY, USA.,Department of Biomedical Informatics, Columbia University, New York, NY, USA
| | - W K Chung
- Department of Pediatrics and Medicine, Columbia University, New York, NY, USA
| | - J G Seidman
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - C E Seidman
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - E E Schadt
- Icahn Institute for Genomics and Multiscale Biology.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Sema4, A Mount Sinai Venture, Stamford, CT, USA
| | - B D Gelb
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Carbonnière P, Erba A, Richter F, Dovesi R, Rerat M. Calculation of Anharmonic IR and Raman Intensities for Periodic Systems from DFT Calculations: Implementation and Validation. J Chem Theory Comput 2020; 16:3343-3351. [PMID: 32275427 DOI: 10.1021/acs.jctc.9b01061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An extension of the CRYSTAL program is presented allowing for calculations of anharmonic infrared (IR) intensities and Raman activities for periodic systems. This work is a follow-up of two papers devoted to the computation of anharmonic vibrational states of solids from DFT (density functional theory) calculations (Erba et al. J. Chem. Theory Comput. 2019, 15, 3755-3765 and Erba et al. J. Chem. Theory Comput. 2019, 15, 3766-3777). The approach presented here relies on the evaluation of integrals of the dipole moment and polarizability operators over anharmonic wave functions obtained from either VSCF (vibrational self-consistent field) or VCI (vibrational configuration interaction) calculations. With this extension, the program now allows for a more complete characterization of the vibrational spectroscopic features of solids within the density functional theory. In particular, it is able (i) to provide reliable positions and intensities for the most intense spectral features and (ii) to check whether a first overtone or a combination band has a nonvanishing IR intensity or Raman activity. Therefore, it becomes possible to assign the transition(s) corresponding to satellite peak(s) around a fundamental transition or the overtones or combination bands that may be as intense as their corresponding fundamental transitions through the strongest mode-mode couplings, as in so-called Fermi resonances. The present method is assessed on two molecular systems, H2O and H2CO, as well as on two solid state cases, boron hydrides BH4 and their deuterated species BD4 in a crystalline environment of alkali metals (M = Na, K). The solid state cases are particularly insightful as, in the B-H (or B-D) stretching region here considered, they exhibit many spectral features entirely due to anharmonic effects: two out of three in the IR spectrum and four out of six in the Raman spectrum. All IR and Raman active overtones and combination bands experimentally observed are correctly predicted with our approach. The effect of the adopted quantum-chemical model (DFT exchange-correlation functional/basis set) for the electronic structure calculations on the computed spectra is discussed and found to be significant, which suggests some special care is needed for the analysis of subtle spectral features.
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Affiliation(s)
- P Carbonnière
- IPREM, Université de Pau et des Pays de l'Adour, IPREM-CAPT UMR CNRS 5254, Hélioparc Pau Pyrénées, 2 avenue du Président Angot, 64053 Pau Cedex 09, Pau, France
| | - A Erba
- Dipartimento di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
| | - F Richter
- IPREM, Université de Pau et des Pays de l'Adour, IPREM-CAPT UMR CNRS 5254, Hélioparc Pau Pyrénées, 2 avenue du Président Angot, 64053 Pau Cedex 09, Pau, France
| | - R Dovesi
- Dipartimento di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
| | - M Rerat
- IPREM, Université de Pau et des Pays de l'Adour, IPREM-CAPT UMR CNRS 5254, Hélioparc Pau Pyrénées, 2 avenue du Président Angot, 64053 Pau Cedex 09, Pau, France
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Gunnarshaug AF, Kjelstrup S, Bedeaux D, Richter F, Burheim OS. The reversible heat effects at lithium iron phosphate- and graphite electrodes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135567] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Aerts A, Carbonnière P, Richter F, Brown A. Vibrational states of deuterated trans- and cis-formic acid: DCOOH, HCOOD, and DCOOD. J Chem Phys 2020; 152:024305. [DOI: 10.1063/1.5135571] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Antoine Aerts
- Université libre de Bruxelles, Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), 50, av. F. Roosevelt, 1050 Bruxelles, Belgique
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - P. Carbonnière
- Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - F. Richter
- Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - Alex Brown
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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14
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Gluschke JG, Richter F, Micolich AP. A parylene coating system specifically designed for producing ultra-thin films for nanoscale device applications. Rev Sci Instrum 2019; 90:083901. [PMID: 31472654 DOI: 10.1063/1.5099293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/10/2019] [Indexed: 06/10/2023]
Abstract
We report on a parylene chemical vapor deposition system custom designed for producing ultrathin parylene films (5-100 nm thickness) for use as an electrical insulator in nanoscale electronic devices, including as the gate insulator in transistors. The system features a small deposition chamber that can be isolated and purged for process termination, a quartz crystal microbalance for monitoring deposition, and a rotating angled stage to increase coating conformity. The system was mostly built from off-the-shelf vacuum fittings allowing for easy modification and reduced cost compared to commercial parylene coating systems. The production of ultrathin parylene films for device applications is a niche not well catered to by commercial coating systems, which are typically designed to give thicker coatings (microns) with high uniformity over much larger areas. An added advantage of our design for nanoscale device applications is that the small deposition chamber is readily removable for transfer to a glovebox to enable parylene deposition onto pristine surfaces prepared in oxygen/water-free environments with minimal contamination.
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Affiliation(s)
- J G Gluschke
- School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - F Richter
- School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - A P Micolich
- School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
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15
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Nerdinger S, Stefinovic M, Richter F, Olma J, Brysz M, Walker T, Kahlenberg V, Gelbrich T. Crystal structure of idelalisib tert-butanol monosolvate dihydrate. Acta Crystallogr E Crystallogr Commun 2019; 75:414-417. [PMID: 30867961 PMCID: PMC6399699 DOI: 10.1107/s2056989019002743] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 02/22/2019] [Indexed: 11/29/2022]
Abstract
Molecules of the three components, idelalisib, tert-butanol and water, are linked into a hydrogen-bonded chain structure with the topology of a 2,3,4,5-connected 4-nodal net. In the title structure, 5-fluoro-3-phenyl-2-[(1S)-1-(9H-purin-6-ylamino)propyl]quinazolin-4(3H)-one (= idelalisib) tert-butanol monosolvate dihydrate, C22H18FN7O·C4H10O·2H2O, the idelalisib molecule displays planar quinazoline and purine systems which are nearly perpendicular to one another. Seven distinct hydrogen-bonding interactions link the idelalisib, t-BuOH and water molecules into a complex chain structure with the topology of a 2,3,4,5-connected 4-nodal net having the point symbol (3.4.52.62)(3.4.52.64.72)(3.5.6)(5).
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Affiliation(s)
| | | | - Frank Richter
- Sandoz GmbH, Biochemiestrasse 10, 6250 Kundl, Austria
| | - Jacek Olma
- Selvita S.A., Park Life Science, Bobrzynskiego 14, 30-348 Kraków, Poland
| | - Michal Brysz
- Selvita S.A., Park Life Science, Bobrzynskiego 14, 30-348 Kraków, Poland
| | - Tracy Walker
- Almac Group, Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
| | - Volker Kahlenberg
- University of Innsbruck, Institute of Mineralogy and Petrography, Innrain 52, 6020 Innsbruck, Austria
| | - Thomas Gelbrich
- University of Innsbruck, Institute of Pharmacy, Innrain 52, 6020 Innsbruck, Austria
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16
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Lehmenkühler A, Richter F. Cortical Spreading Depolarization (CSD) Recorded from Intact Skin, from Surface of Dura Mater or Cortex: Comparison with Intracortical Recordings in the Neocortex of Adult Rats. Neurochem Res 2019; 45:34-41. [PMID: 30710236 DOI: 10.1007/s11064-019-02737-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 01/28/2023]
Abstract
In cerebral cortex of anesthetized rats single waves of spreading depolarization (CSD) were elicited by needle prick. CSD-related changes of DC (direct current) potentials were either recorded from the intact skin or together with concomitant changes of potassium concentration with K+-selective microelectrodes simultaneously at the surface of the dura mater or of the cortex ([K+]s) and in the extracellular space at a cortical depth of 1200 µm. At the intact skin CSD-related DC-shifts had amplitudes of less than 1 mV and had only in a minority of cases the typical CSD-like shape. In the majority these DC-shifts rose and recovered very slowly and were difficult to identify without further indicators. At dura surface CSD-related DC shifts were significantly smaller and rose and recovered slower than intracortically recorded CSD. Concomitant increases in [K+]s were delayed and reached maximal values of about 5 mM from a baseline of 3 mM. They rose and recovered slower than simultaneously recorded intracortical changes in extracellular potassium concentration ([K+]e) that were up to 65 mM. The results suggest that extracellular potassium during CSD is diffusing through the subarachnoid space and across the dura mater. In a few cases CSD was either absent at the dura or at a depth of 1200 µm. Even full blown CSDs in this cortical depth could remain without concomitant deflections at the dura. Our data confirmed in principle the possibility of non-invasive recordings of CSD-related DC-shifts. For a use in clinical routine sensitivity and specificity will have to be improved.
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Affiliation(s)
| | - F Richter
- Institute of Physiology I/Neurophysiology, University Hospital Jena - Friedrich Schiller University Jena, Teichgraben 8, 07740, Jena, Germany.
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17
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Bulman S, Richter F, Marschollek S, Benade F, Jülke S, Ludwig-Müller J. Arabidopsis thaliana expressing PbBSMT, a gene encoding a SABATH-type methyltransferase from the plant pathogenic protist Plasmodiophora brassicae, show leaf chlorosis and altered host susceptibility. Plant Biol (Stuttg) 2019; 21 Suppl 1:120-130. [PMID: 29607585 DOI: 10.1111/plb.12728] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
The plant pathogenic protist Plasmodiophora brassicae causes clubroot disease of Brassicaceae. This biotrophic organism can down-regulate plant defence responses. The previously characterised P. brassicae PbBSMT methyltransferase has substrate specificity for salicylic, benzoic and anthranilic acids. We therefore propose a role for the methylation of SA in attenuating plant defence response in infected roots as a novel strategy for intracellular parasitism. We overexpressed PbBSMT under the control of an inducible promoter in Arabidopsis thaliana and performed physiological, molecular and phytopathological analyses with the transgenic plants under control and induced conditions in comparison to the wild type. Upon induction, transcription of PbBSMT was associated with: (1) strong leaf phenotypes from anthocyanin accumulation and chlorosis followed by browning; (2) increased plant susceptibility after infection with P. brassicae that was manifested as more yellow leaves and reduced growth of upper plant parts; and (3) induced transgenic plants were not able to support large galls and had a brownish appearance of some clubs. Microarray data indicated that chlorophyll loss was accompanied by reduced transcription of genes involved in photosynthesis, while genes encoding glucose metabolism, mitochondrial functions and cell wall synthesis were up-regulated. Our results indicate a role for PbBSMT in attenuation of host defence responses in the roots by metabolising a plant defence signal.
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Affiliation(s)
- S Bulman
- New Zealand Institute for Plant & Food Research Ltd, Christchurch, New Zealand
| | - F Richter
- Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - S Marschollek
- Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - F Benade
- Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - S Jülke
- Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - J Ludwig-Müller
- Institute of Botany, Technische Universität Dresden, Dresden, Germany
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18
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Richter F, Dennerlein S, Nikolov M, Jans DC, Naumenko N, Aich A, MacVicar T, Linden A, Jakobs S, Urlaub H, Langer T, Rehling P. ROMO1 is a constituent of the human presequence translocase required for YME1L protease import. J Cell Biol 2018; 218:598-614. [PMID: 30598479 PMCID: PMC6363466 DOI: 10.1083/jcb.201806093] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [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: 06/14/2018] [Revised: 10/18/2018] [Accepted: 11/26/2018] [Indexed: 01/15/2023] Open
Abstract
Mitochondria are the powerhouses of eukaryotic cells and rely on protein import from the cytosol. Richter et al. found ROMO1 as a new constituent of the human mitochondrial import machinery linking protein import to quality control and mitochondrial morphology. The mitochondrial presequence translocation machinery (TIM23 complex) is conserved between the yeast Saccharomyces cerevisiae and humans; however, functional characterization has been mainly performed in yeast. Here, we define the constituents of the human TIM23 complex using mass spectrometry and identified ROMO1 as a new translocase constituent with an exceptionally short half-life. Analyses of a ROMO1 knockout cell line revealed aberrant inner membrane structure and altered processing of the GTPase OPA1. We show that in the absence of ROMO1, mitochondria lose the inner membrane YME1L protease, which participates in OPA1 processing and ROMO1 turnover. While ROMO1 is dispensable for general protein import along the presequence pathway, we show that it participates in the dynamics of TIM21 during respiratory chain biogenesis and is specifically required for import of YME1L. This selective import defect can be linked to charge distribution in the unusually long targeting sequence of YME1L. Our analyses establish an unexpected link between mitochondrial protein import and inner membrane protein quality control.
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Affiliation(s)
- Frank Richter
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Sven Dennerlein
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Miroslav Nikolov
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Daniel C Jans
- Department of NanoBiophotonics, Mitochondrial Structure and Dynamics Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Neurology, University Medical Center, Göttingen, Germany
| | - Nataliia Naumenko
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Abhishek Aich
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Thomas MacVicar
- Department of Mitochondrial Proteostasis, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Andreas Linden
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Bioanalytics Group, Department of Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Stefan Jakobs
- Department of NanoBiophotonics, Mitochondrial Structure and Dynamics Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Neurology, University Medical Center, Göttingen, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Bioanalytics Group, Department of Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Thomas Langer
- Department of Mitochondrial Proteostasis, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany .,Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
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19
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Saal KA, Richter F, Rehling P, Rizzoli SO. Combined Use of Unnatural Amino Acids Enables Dual-Color Super-Resolution Imaging of Proteins via Click Chemistry. ACS Nano 2018; 12:12247-12254. [PMID: 30525434 DOI: 10.1021/acsnano.8b06047] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 06/09/2023]
Abstract
Recent advances in optical nanoscopy have brought the imaging resolution to the size of the individual macromolecules, thereby setting stringent requirements for the fluorescent labels. Such requirements are optimally fulfilled by the incorporation of unnatural amino acids (UAAs) in the proteins of interest (POIs), followed by fluorophore conjugation via click chemistry. However, this approach has been limited to single POIs in mammalian cells. Here we solve this problem by incorporating different UAAs in different POIs, which are expressed in independent cell sets. The cells are then fused, thereby combining the different proteins and organelles, and are easily imaged by dual-color super-resolution microscopy. This procedure, which we termed Fuse2Click, is simple, requires only the well-established Amber codon, and allows the use of all previously optimized UAAs and tRNA/RS pairs. This should render it a tool of choice for multicolor click-based imaging.
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Affiliation(s)
- Kim-A Saal
- Institute for Neuro- and Sensory Physiology, Center for Biostructural Imaging of Neurodegeneration , University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain , Göttingen , Germany
| | - Frank Richter
- Institute for Cellular Biochemistry , University Medical Center Göttingen , Göttingen , Germany
| | - Peter Rehling
- Institute for Cellular Biochemistry , University Medical Center Göttingen , Göttingen , Germany
| | - Silvio O Rizzoli
- Institute for Neuro- and Sensory Physiology, Center for Biostructural Imaging of Neurodegeneration , University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain , Göttingen , Germany
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20
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Richter F, Eitner A, Leuchtweis J, Bauer R, Ebersberger A, Lehmenkühler A, Schaible HG. The potential of substance P to initiate and perpetuate cortical spreading depression (CSD) in rat in vivo. Sci Rep 2018; 8:17656. [PMID: 30518958 PMCID: PMC6281573 DOI: 10.1038/s41598-018-36330-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 06/27/2018] [Accepted: 11/19/2018] [Indexed: 12/14/2022] Open
Abstract
The tachykinin substance P (SP) increases neuronal excitability, participates in homeostatic control, but induces brain oedema after stroke or trauma. We asked whether SP is able to induce cortical spreading depression (CSD) which often aggravates stroke-induced pathology. In anesthetized rats we applied SP (10−5, 10−6, 10−7, or 10−8 mol/L) to a restricted cortical area and recorded CSDs there and in remote non-treated areas using microelectrodes. SP was either applied in artificial cerebrospinal fluid (ACSF), or in aqua to perform a preconditioning. Plasma extravasation in cortical grey matter was assessed with Evans Blue. Only SP dissolved in aqua induced self-regenerating CSDs. SP dissolved in ACSF did not ignite CSDs even when excitability was increased by acetate-preconditioning. Aqua alone elicited as few CSDs as the lowest concentration of SP. Local pretreatment with 250 nmol/L of a neurokinin 1 receptor antagonist prevented the SP-induced plasma extravasation, the initiation of CSDs by 10−5 mol/L SP diluted in aqua, and the initiation of CSDs by aqua alone, but did not suppress KCl-induced CSD. Thus neurokinin 1 receptor antagonists may be used to explore the involvement of SP in CSDs in clinical studies.
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Affiliation(s)
- Frank Richter
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany.
| | - Annett Eitner
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Johannes Leuchtweis
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Reinhard Bauer
- Institute of Molecular Cell Biology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Andrea Ebersberger
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | | | - Hans-Georg Schaible
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
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Affiliation(s)
- Gianpiero Forte
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria, Sapienza Università di Roma, Via del Castro Laurenziano 7, 00161 Roma, Italy
| | - Isabella Chiarotto
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria, Sapienza Università di Roma, Via del Castro Laurenziano 7, 00161 Roma, Italy
| | - Frank Richter
- Covestro Deutschland AG, Kaiser-Wilhelm-Allee 60, 51365 Leverkusen, Germany
| | - Vinh Trieu
- Covestro Deutschland AG, Kaiser-Wilhelm-Allee 60, 51365 Leverkusen, Germany
| | - Marta Feroci
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria, Sapienza Università di Roma, Via del Castro Laurenziano 7, 00161 Roma, Italy
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22
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Richter F, Seifert J, Korb M, Lang H, Banert K. Front Cover: Real Multicomponent Reactions: Synthesis of Highly Substituted 2-Aminothiazoles (Eur. J. Org. Chem. 34/2018). European J Org Chem 2018. [DOI: 10.1002/ejoc.201801212] [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: 11/08/2022]
Affiliation(s)
- Frank Richter
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Jennifer Seifert
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Marcus Korb
- Inorganic Chemistry; Chemnitz University of Technology; 09107 Chemnitz Germany
| | - Heinrich Lang
- Inorganic Chemistry; Chemnitz University of Technology; 09107 Chemnitz Germany
| | - Klaus Banert
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
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Affiliation(s)
- Frank Richter
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Jennifer Seifert
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
| | - Marcus Korb
- Inorganic Chemistry; Chemnitz University of Technology; 09107 Chemnitz Germany
| | - Heinrich Lang
- Inorganic Chemistry; Chemnitz University of Technology; 09107 Chemnitz Germany
| | - Klaus Banert
- Organic Chemistry; Chemnitz University of Technology; Strasse der Nationen 62 09111 Chemnitz Germany
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Muehleck J, Richter F, Bell L, Wick K, Strauß B, Berger U. Inanspruchnahme des Versorgungssystems und Prävalenz bei Essstörungen – Kohortenstudie zu Sekundärdaten der gesetzlichen Krankenversicherung. Psychother Psychosom Med Psychol 2018. [DOI: 10.1055/s-0038-1668020] [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)
- J Muehleck
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | - F Richter
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | - L Bell
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | - K Wick
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | - B Strauß
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | - U Berger
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
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25
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Berger U, Bell L, Richter F, Muehleck J, Wick K, Strauß B. Langzeitevaluation mit 8-Jahres-Katamnese des Programms PriMa (Primärprävention Magersucht) zur schulbasierten Prävention bei Essstörungen. Psychother Psychosom Med Psychol 2018. [DOI: 10.1055/s-0038-1667910] [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)
- U Berger
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | | | | | - J Muehleck
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
| | | | - B Strauß
- Universitätsklinikum Jena, Institut für Psychosoziale Medizin und Psychotherapie, Jena, Deutschland
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26
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Golling FE, Pires R, Hecking A, Weikard J, Richter F, Danielmeier K, Dijkstra D. Polyurethanes for coatings and adhesives – chemistry and applications. POLYM INT 2018. [DOI: 10.1002/pi.5665] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Schubert S, Storch P, Richter F, Sickenberger W. Can special tinted soft contact lenses help to reduce migraine attacks? Cont Lens Anterior Eye 2018. [DOI: 10.1016/j.clae.2018.04.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Scherbaum N, Timm J, Richter F, Bonnet U, Bombeck J, Lajos S, Specka M. Outcome of a hepatitis B vaccination program for clients of a drug consumption facility. J Clin Virol 2018; 106:28-32. [PMID: 30015286 DOI: 10.1016/j.jcv.2018.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/16/2018] [Accepted: 04/21/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Intravenous drug users (IDUs) are a risk group for hepatitis B. In Germany, the hepatitis B virus (HBV) vaccination rates in IDUs are low. OBJECTIVES In this study the implementation and success of HBV vaccination in a drug consumption facility (DCF) was evaluated. STUDY DESIGN Clients attending a DCF were asked regarding their HBV status. In case of no known HBV infection and no previous vaccination, clients interested in HBV vaccination were offered a HBV blood testing. HBV vaccination was administered to susceptible clients in months 0, 1, 6. Booster vaccinations were offered to clients without seroconversion (anti-HBs < 100 U/l). RESULTS 193 out of 364 clients reported on a known HBV infection or immunity after vaccination. 95 (55.6%) out of 171 eligible clients underwent a HBV serology. According to HBV serology 31 (32.6%) out of 95 clients were not susceptible for vaccination (mainly due to an unknown HBV infection). 47 (73.4%) out of 64 clients susceptible were administered 3 vaccinations. 10 clients received at least one further vaccination. For those showing up for testing (36 out of 47 clients) the seroconversion rate was 69.4% (> 100 IU/l) and 83.3% (> 10 IU/l), respectively. DISCUSSION Only a minority of clients of a DCF was susceptible for HBV vaccination. 47 out of 64 (73.4%) susceptible clients underwent at least three administrations of the vaccine, mostly resulting in seroconversion. Even in IDUs attending a DCF, a clientele with unstable social and health conditions, HBV vaccination can be carried out successfully.
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Affiliation(s)
- N Scherbaum
- LVR-Hospital Essen, Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany.
| | - J Timm
- Institute for Virology, University Hospital, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | | | - U Bonnet
- Department of Psychiatry, Psychotherapy, and Psychosomatic Medicine, Evangelisches Krankenhaus Castrop-Rauxel, Germany
| | | | - S Lajos
- LVR-Hospital Essen, Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
| | - M Specka
- LVR-Hospital Essen, Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
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29
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Tomasi Morgano M, Leibold H, Richter F, Stapf D, Seifert H. Screw pyrolysis technology for sewage sludge treatment. Waste Manag 2018; 73:487-495. [PMID: 28601579 DOI: 10.1016/j.wasman.2017.05.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 02/16/2017] [Revised: 05/04/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
Sewage sludge quantities have grown continuously since the introduction of the European Directive (UWWTD 91/271/EEC) relating to the treatment of urban wastewater. In the present, most of the sewage sludge is combusted in single fuels incineration plants or is co-fired in waste incineration or coal power plants. The combustion of sewage sludge is a proven technology. Other treatments, such as fluidized bed gasification, were successfully adopted to produce suitable syngas for power production. Besides, the number of large wastewater treatment plants is relatively small compared to the local rural ones. Moreover, alternative technologies are arising with the main target of nutrients recovery, with a special focus on phosphorus. The aforementioned issues, i.e. the small scale (below 1MW) and the nutrients recovery, suggest that pyrolysis in screw reactors may become an attractive alternative technology for sewage sludge conversion, recovery and recycling. In this work, about 100kg of dried sewage sludge from a plant in Germany were processed at the newly developed STYX Reactor, at KIT. The reactor combines the advantages of screw reactors with the high temperature filtration, in order to produce particle and ash free vapors and condensates, respectively. Experiments were carried out at temperatures between 350°C and 500°C. The yield of the char decreased from 66.7wt.% to 53.0wt.%. The same trend was obtained for the energy yield, while the maximum pyrolysis oil yield of 13.4wt.% was obtained at 500°C. Besides mercury, the metals and the other minerals were completely retained in the char. Nitrogen and sulfur migrated from the solid to the condensate and to the gas, respectively. Based on the energy balance, a new concept for the decentral production of char as well as heat and power in an externally fired micro gas turbine showed a cogeneration efficiency up to about 40%.
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Affiliation(s)
- Marco Tomasi Morgano
- Institute for Technical Chemistry (ITC), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Hans Leibold
- Institute for Technical Chemistry (ITC), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Frank Richter
- Institute for Technical Chemistry (ITC), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Dieter Stapf
- Institute for Technical Chemistry (ITC), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Helmut Seifert
- Institute for Technical Chemistry (ITC), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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30
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Richter KN, Revelo NH, Seitz KJ, Helm MS, Sarkar D, Saleeb RS, D'Este E, Eberle J, Wagner E, Vogl C, Lazaro DF, Richter F, Coy-Vergara J, Coceano G, Boyden ES, Duncan RR, Hell SW, Lauterbach MA, Lehnart SE, Moser T, Outeiro TF, Rehling P, Schwappach B, Testa I, Zapiec B, Rizzoli SO. Glyoxal as an alternative fixative to formaldehyde in immunostaining and super-resolution microscopy. EMBO J 2018; 37:139-159. [PMID: 29146773 PMCID: PMC5753035 DOI: 10.15252/embj.201695709] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 09/25/2017] [Accepted: 10/06/2017] [Indexed: 12/02/2022] Open
Abstract
Paraformaldehyde (PFA) is the most commonly used fixative for immunostaining of cells, but has been associated with various problems, ranging from loss of antigenicity to changes in morphology during fixation. We show here that the small dialdehyde glyoxal can successfully replace PFA Despite being less toxic than PFA, and, as most aldehydes, likely usable as a fixative, glyoxal has not yet been systematically tried in modern fluorescence microscopy. Here, we tested and optimized glyoxal fixation and surprisingly found it to be more efficient than PFA-based protocols. Glyoxal acted faster than PFA, cross-linked proteins more effectively, and improved the preservation of cellular morphology. We validated glyoxal fixation in multiple laboratories against different PFA-based protocols and confirmed that it enabled better immunostainings for a majority of the targets. Our data therefore support that glyoxal can be a valuable alternative to PFA for immunostaining.
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Affiliation(s)
- Katharina N Richter
- Department of Neuro- and Sensory Physiology, University of Göttingen Medical Center, Göttingen, Germany
- Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
| | - Natalia H Revelo
- Department of Neuro- and Sensory Physiology, University of Göttingen Medical Center, Göttingen, Germany
| | - Katharina J Seitz
- Department of Neuro- and Sensory Physiology, University of Göttingen Medical Center, Göttingen, Germany
- International Max Planck Research School Molecular Biology, Göttingen, Germany
| | - Martin S Helm
- Department of Neuro- and Sensory Physiology, University of Göttingen Medical Center, Göttingen, Germany
- International Max Planck Research School Molecular Biology, Göttingen, Germany
| | | | - Rebecca S Saleeb
- Edinburgh Super-Resolution Imaging Consortium, Institute of Biological Chemistry, Biophysics, and Bioengineering, Heriot-Watt University, Edinburgh, UK
| | - Elisa D'Este
- Department of NanoBiophotonics, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany
| | - Jessica Eberle
- Department of Neural Systems, Max-Planck-Institute for Brain Research, Frankfurt am Main, Germany
| | - Eva Wagner
- Heart Research Center Göttingen, Department of Cardiology & Pulmonology, University Medical Center Göttingen, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK) Site Göttingen
| | - Christian Vogl
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
- Max-Planck-Institute for Experimental Medicine, Auditory Neuroscience Group, Göttingen, Germany
| | - Diana F Lazaro
- Department of Experimental Neurodegeneration, Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Center for Biostructural Imaging of Neurodegeneration University Medical Center Göttingen, Göttingen, Germany
- Max-Planck-Institute for Experimental Medicine, Göttingen, Germany
| | - Frank Richter
- International Max Planck Research School Molecular Biology, Göttingen, Germany
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Javier Coy-Vergara
- Department of Molecular Biology, University Medical Center Göttingen, Göttingen, Germany
| | - Giovanna Coceano
- Department of Applied Physics and Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Edward S Boyden
- Departments of Brain and Cognitive Science and Biological Engineering, MIT Media Lab and McGovern Institute, Cambridge, MA, USA
| | - Rory R Duncan
- Edinburgh Super-Resolution Imaging Consortium, Institute of Biological Chemistry, Biophysics, and Bioengineering, Heriot-Watt University, Edinburgh, UK
| | - Stefan W Hell
- Department of NanoBiophotonics, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany
| | - Marcel A Lauterbach
- Department of Neural Systems, Max-Planck-Institute for Brain Research, Frankfurt am Main, Germany
| | - Stephan E Lehnart
- Heart Research Center Göttingen, Department of Cardiology & Pulmonology, University Medical Center Göttingen, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK) Site Göttingen
| | - Tobias Moser
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
- Max-Planck-Institute for Experimental Medicine, Auditory Neuroscience Group, Göttingen, Germany
| | - Tiago F Outeiro
- Department of Experimental Neurodegeneration, Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Center for Biostructural Imaging of Neurodegeneration University Medical Center Göttingen, Göttingen, Germany
- Max-Planck-Institute for Experimental Medicine, Göttingen, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
- Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany
| | - Blanche Schwappach
- Department of Molecular Biology, University Medical Center Göttingen, Göttingen, Germany
| | - Ilaria Testa
- Department of Applied Physics and Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Bolek Zapiec
- Max Planck Research Unit for Neurogenetics, Frankfurt am Main, Germany
| | - Silvio O Rizzoli
- Department of Neuro- and Sensory Physiology, University of Göttingen Medical Center, Göttingen, Germany
- Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
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Mauz E, Lange C, Richter F, Kuntz B, Zeiher J, Kurth BM. Changes in smoking during the transition from adolescence to young adulthood. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.180] [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: 11/14/2022] Open
Affiliation(s)
- E Mauz
- Robert Koch-Institute, Berlin, Germany
| | - C Lange
- Robert Koch-Institute, Berlin, Germany
| | - F Richter
- Robert Koch-Institute, Berlin, Germany
| | - B Kuntz
- Robert Koch-Institute, Berlin, Germany
| | - J Zeiher
- Robert Koch-Institute, Berlin, Germany
| | - BM Kurth
- Robert Koch-Institute, Berlin, Germany
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32
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Richter F, Vie PJ, Kjelstrup S, Burheim OS. Measurements of ageing and thermal conductivity in a secondary NMC-hard carbon Li-ion battery and the impact on internal temperature profiles. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.07.173] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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33
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Bauer A, Gerstenberger J, Gringmuth M, Richter F, Richter A. P 77 Optogenetic stimulations of striatal cholinergic interneurons in an animal model of dystonia. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Denkert N, Schendzielorz AB, Barbot M, Versemann L, Richter F, Rehling P, Meinecke M. Cation selectivity of the presequence translocase channel Tim23 is crucial for efficient protein import. eLife 2017; 6. [PMID: 28857742 PMCID: PMC5578737 DOI: 10.7554/elife.28324] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/31/2017] [Indexed: 01/09/2023] Open
Abstract
Virtually all mitochondrial matrix proteins and a considerable number of inner membrane proteins carry a positively charged, N-terminal presequence and are imported by the TIM23 complex (presequence translocase) located in the inner mitochondrial membrane. The voltage-regulated Tim23 channel constitutes the actual protein-import pore wide enough to allow the passage of polypeptides with a secondary structure. In this study, we identify amino acids important for the cation selectivity of Tim23. Structure based mutants show that selectivity is provided by highly conserved, pore-lining amino acids. Mutations of these amino acid residues lead to reduced selectivity properties, reduced protein import capacity and they render the Tim23 channel insensitive to substrates. We thus show that the cation selectivity of the Tim23 channel is a key feature for substrate recognition and efficient protein import. The cells of animals, plants and other eukaryotic organisms contain compartments known as organelles that play many different roles. For example, compartments called mitochondria are responsible for supplying the chemical energy cells need to survive and grow. Two membranes surround each mitochondrion and energy is converted on the surface of the inner one. Mitochondria contain over 1,000 different proteins, most of which are produced in the main part of the cell and have to be transported into the mitochondria. A transport protein called Tim23 is part of a larger group or ‘complex’ of proteins that helps to import many other proteins into the mitochondria. This complex sits in the inner membrane, with the Tim23 protein forming a large, water-filled pore through its core that provides a route for proteins to pass through the membrane. Proteins are made of building blocks called amino acids. The proteins transported by the complex containing Tim23 all have a short chain of amino acids at one end known as an N-terminal presequence. However, it is not clear how the inside of the Tim23 channel identifies and transports this presequence to allow the right proteins to pass through the inner membrane. Denkert, Schendzielorz et al. studied the normal and mutant versions of a Tim23 channel from yeast to find out which parts of the protein are involved in detecting the N-terminal presequence after it enters the pore. The experiments show that there are several amino acids in Tim23 that play important roles in this process. Furthermore, mitochondria containing mutant Tim23 channels, that are less able to identify the N-terminal presequence, are impaired in their ability to import proteins. Tim23 proteins in humans and other organisms also contain most or all of the specific amino acids identified in this study, suggesting that the findings of Denkert, Schendzielorz et al. will also apply to other species. Furthermore, the experimental strategy used in this study could be adapted to investigate transport proteins in other cell compartments.
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Affiliation(s)
- Niels Denkert
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | | | - Mariam Barbot
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Lennart Versemann
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Frank Richter
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany.,Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Göttinger Zentrum für Molekulare Biowissenschaften, Göttingen, Germany
| | - Michael Meinecke
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany.,Göttinger Zentrum für Molekulare Biowissenschaften, Göttingen, Germany.,European Neuroscience Institute Göttingen, Göttingen, Germany
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Mauz E, Richter F, Kuntz B, Poethko-Müller C, Lampert T, Kurth B. Soziale Lage und Veränderungen der subjektiven Gesundheit im Übergang vom Jugend- ins junge Erwachsenenalter. Ergebnisse der KiGGS-Kohorte. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- E Mauz
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
| | - F Richter
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
| | - B Kuntz
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
| | - C Poethko-Müller
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
| | - T Lampert
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
| | - B Kurth
- Robert Koch-Institut, Epidemiologie und Gesundheitsmonitoring, Berlin
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36
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Kuntz B, Richter F, Mauz E, Zeiher J, Lampert T. Soziale Unterschiede im Rauchverhalten beim Übergang vom Jugend- ins junge Erwachsenenalter: Ergebnisse der KiGGS-Kohorte. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1606030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- B Kuntz
- Robert Koch-Institut, Abteilung für Epidemiologie und Gesundheitsmonitoring, 12101
| | - F Richter
- Robert Koch-Institut, Abteilung für Epidemiologie und Gesundheitsmonitoring, 12101
| | - E Mauz
- Robert Koch-Institut, Abteilung für Epidemiologie und Gesundheitsmonitoring, 12101
| | - J Zeiher
- Robert Koch-Institut, Abteilung für Epidemiologie und Gesundheitsmonitoring, 12101
| | - T Lampert
- Robert Koch-Institut, Abteilung für Epidemiologie und Gesundheitsmonitoring, 12101
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37
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Affiliation(s)
- Sabine Möhle
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Sebastian Herold
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Material Science in Mainz; Johannes Gutenberg-Universität Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Frank Richter
- Covestro Deutschland AG; Kaiser-Wilhelm-Allee 60 51365 Leverkusen Germany
| | - Hartmut Nefzger
- Covestro Deutschland AG; Kaiser-Wilhelm-Allee 60 51365 Leverkusen Germany
| | - Siegfried R. Waldvogel
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Material Science in Mainz; Johannes Gutenberg-Universität Mainz; Staudingerweg 9 55128 Mainz Germany
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38
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Abstract
The chiral title compound, C8H15NO5S, was obtained by cyclization of (R)-1-(tert-butoxycarbonylamino)-2-propanol with thionyl chloride and subsequent oxidation with sodium metaperiodate/ruthenium(IV) oxide. It crystallizes with two independent molecules in the asymmetric unit. In the crystal, C—H...O interactions link the molecules into a three-dimensional network.
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39
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Dreier JP, Fabricius M, Ayata C, Sakowitz OW, William Shuttleworth C, Dohmen C, Graf R, Vajkoczy P, Helbok R, Suzuki M, Schiefecker AJ, Major S, Winkler MKL, Kang EJ, Milakara D, Oliveira-Ferreira AI, Reiffurth C, Revankar GS, Sugimoto K, Dengler NF, Hecht N, Foreman B, Feyen B, Kondziella D, Friberg CK, Piilgaard H, Rosenthal ES, Westover MB, Maslarova A, Santos E, Hertle D, Sánchez-Porras R, Jewell SL, Balança B, Platz J, Hinzman JM, Lückl J, Schoknecht K, Schöll M, Drenckhahn C, Feuerstein D, Eriksen N, Horst V, Bretz JS, Jahnke P, Scheel M, Bohner G, Rostrup E, Pakkenberg B, Heinemann U, Claassen J, Carlson AP, Kowoll CM, Lublinsky S, Chassidim Y, Shelef I, Friedman A, Brinker G, Reiner M, Kirov SA, Andrew RD, Farkas E, Güresir E, Vatter H, Chung LS, Brennan KC, Lieutaud T, Marinesco S, Maas AIR, Sahuquillo J, Dahlem MA, Richter F, Herreras O, Boutelle MG, Okonkwo DO, Bullock MR, Witte OW, Martus P, van den Maagdenberg AMJM, Ferrari MD, Dijkhuizen RM, Shutter LA, Andaluz N, Schulte AP, MacVicar B, Watanabe T, Woitzik J, Lauritzen M, Strong AJ, Hartings JA. Recording, analysis, and interpretation of spreading depolarizations in neurointensive care: Review and recommendations of the COSBID research group. J Cereb Blood Flow Metab 2017; 37:1595-1625. [PMID: 27317657 PMCID: PMC5435289 DOI: 10.1177/0271678x16654496] [Citation(s) in RCA: 230] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 05/04/2016] [Accepted: 05/06/2016] [Indexed: 01/18/2023]
Abstract
Spreading depolarizations (SD) are waves of abrupt, near-complete breakdown of neuronal transmembrane ion gradients, are the largest possible pathophysiologic disruption of viable cerebral gray matter, and are a crucial mechanism of lesion development. Spreading depolarizations are increasingly recorded during multimodal neuromonitoring in neurocritical care as a causal biomarker providing a diagnostic summary measure of metabolic failure and excitotoxic injury. Focal ischemia causes spreading depolarization within minutes. Further spreading depolarizations arise for hours to days due to energy supply-demand mismatch in viable tissue. Spreading depolarizations exacerbate neuronal injury through prolonged ionic breakdown and spreading depolarization-related hypoperfusion (spreading ischemia). Local duration of the depolarization indicates local tissue energy status and risk of injury. Regional electrocorticographic monitoring affords even remote detection of injury because spreading depolarizations propagate widely from ischemic or metabolically stressed zones; characteristic patterns, including temporal clusters of spreading depolarizations and persistent depression of spontaneous cortical activity, can be recognized and quantified. Here, we describe the experimental basis for interpreting these patterns and illustrate their translation to human disease. We further provide consensus recommendations for electrocorticographic methods to record, classify, and score spreading depolarizations and associated spreading depressions. These methods offer distinct advantages over other neuromonitoring modalities and allow for future refinement through less invasive and more automated approaches.
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Affiliation(s)
- Jens P Dreier
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurology, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Martin Fabricius
- Department of Clinical Neurophysiology, Rigshospitalet, Copenhagen, Denmark
| | - Cenk Ayata
- Neurovascular Research Laboratory, Department of Radiology, and Stroke Service and Neuroscience Intensive Care Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Oliver W Sakowitz
- Department of Neurosurgery, Klinikum Ludwigsburg, Ludwigsburg, Germany
- Department of Neurosurgery, University Hospital, Heidelberg, Germany
| | - C William Shuttleworth
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Christian Dohmen
- Department of Neurology, University of Cologne, Cologne, Germany
- Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Rudolf Graf
- Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Peter Vajkoczy
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany
| | - Raimund Helbok
- Department of Neurology, Neurocritical Care Unit, Medical University Innsbruck, Innsbruck, Austria
| | - Michiyasu Suzuki
- Department of Neurosurgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Alois J Schiefecker
- Department of Neurology, Neurocritical Care Unit, Medical University Innsbruck, Innsbruck, Austria
| | - Sebastian Major
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurology, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Maren KL Winkler
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
| | - Eun-Jeung Kang
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Denny Milakara
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
| | - Ana I Oliveira-Ferreira
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Clemens Reiffurth
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Gajanan S Revankar
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
| | - Kazutaka Sugimoto
- Department of Neurosurgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Nora F Dengler
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany
| | - Nils Hecht
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany
| | - Brandon Foreman
- Department of Neurology and Rehabilitation Medicine, Neurocritical Care Division, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Bart Feyen
- Department of Neurosurgery, Antwerp University Hospital and University of Antwerp, Edegem, Belgium
| | | | | | - Henning Piilgaard
- Department of Clinical Neurophysiology, Rigshospitalet, Copenhagen, Denmark
| | - Eric S Rosenthal
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - M Brandon Westover
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Anna Maslarova
- Department of Neurosurgery, University Hospital and University of Bonn, Bonn, Germany
| | - Edgar Santos
- Department of Neurosurgery, University Hospital, Heidelberg, Germany
| | - Daniel Hertle
- Department of Neurosurgery, University Hospital, Heidelberg, Germany
| | | | - Sharon L Jewell
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Baptiste Balança
- Inserm U10128, CNRS UMR5292, Lyon Neuroscience Research Center, Team TIGER, Lyon, France
- Université Claude Bernard, Lyon, France
| | - Johannes Platz
- Department of Neurosurgery, Goethe-University, Frankfurt, Germany
| | - Jason M Hinzman
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Janos Lückl
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
| | - Karl Schoknecht
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Experimental Neurology, Charité University Medicine Berlin, Berlin, Germany
- Neuroscience Research Center, Charité University Medicine Berlin, Berlin, Germany
| | - Michael Schöll
- Department of Neurosurgery, University Hospital, Heidelberg, Germany
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Christoph Drenckhahn
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Neurological Center, Segeberger Kliniken, Bad Segeberg, Germany
| | - Delphine Feuerstein
- Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Nina Eriksen
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, Copenhagen, Denmark
- Research Laboratory for Stereology and Neuroscience, Bispebjerg-Frederiksberg Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Viktor Horst
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neuroradiology, Charité University Medicine Berlin, Berlin, Germany
| | - Julia S Bretz
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neuroradiology, Charité University Medicine Berlin, Berlin, Germany
| | - Paul Jahnke
- Department of Neuroradiology, Charité University Medicine Berlin, Berlin, Germany
| | - Michael Scheel
- Department of Neuroradiology, Charité University Medicine Berlin, Berlin, Germany
| | - Georg Bohner
- Department of Neuroradiology, Charité University Medicine Berlin, Berlin, Germany
| | - Egill Rostrup
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, Copenhagen, Denmark
| | - Bente Pakkenberg
- Research Laboratory for Stereology and Neuroscience, Bispebjerg-Frederiksberg Hospital, Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Uwe Heinemann
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Neuroscience Research Center, Charité University Medicine Berlin, Berlin, Germany
| | - Jan Claassen
- Neurocritical Care, Columbia University College of Physicians & Surgeons, New York, NY, USA
| | - Andrew P Carlson
- Department of Neurosurgery, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Christina M Kowoll
- Department of Neurology, University of Cologne, Cologne, Germany
- Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Svetlana Lublinsky
- Department of Physiology and Cell Biology, Zlotowski Center for Neuroscience, Beer-Sheva, Israel
- Department of Neuroradiology, Soroka University Medical Center and Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yoash Chassidim
- Department of Physiology and Cell Biology, Zlotowski Center for Neuroscience, Beer-Sheva, Israel
- Department of Neuroradiology, Soroka University Medical Center and Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ilan Shelef
- Department of Neuroradiology, Soroka University Medical Center and Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Alon Friedman
- Department of Physiology and Cell Biology, Zlotowski Center for Neuroscience, Beer-Sheva, Israel
- Department of Medical Neuroscience, Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - Gerrit Brinker
- Department of Neurosurgery, University of Cologne, Cologne, Germany
| | - Michael Reiner
- Department of Neurosurgery, University of Cologne, Cologne, Germany
| | - Sergei A Kirov
- Department of Neurosurgery and Brain and Behavior Discovery Institute, Medical College of Georgia, Augusta, GA, USA
| | - R David Andrew
- Department of Biomedical & Molecular Sciences, Queen’s University, Kingston, Canada
| | - Eszter Farkas
- Department of Medical Physics and Informatics, Faculty of Medicine, and Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Erdem Güresir
- Department of Neurosurgery, University Hospital and University of Bonn, Bonn, Germany
| | - Hartmut Vatter
- Department of Neurosurgery, University Hospital and University of Bonn, Bonn, Germany
| | - Lee S Chung
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - KC Brennan
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - Thomas Lieutaud
- Inserm U10128, CNRS UMR5292, Lyon Neuroscience Research Center, Team TIGER, Lyon, France
- Université Claude Bernard, Lyon, France
| | - Stephane Marinesco
- Inserm U10128, CNRS UMR5292, Lyon Neuroscience Research Center, Team TIGER, Lyon, France
- AniRA-Neurochem Technological Platform, Lyon, France
| | - Andrew IR Maas
- Department of Neurosurgery, Antwerp University Hospital and University of Antwerp, Edegem, Belgium
| | - Juan Sahuquillo
- Department of Neurosurgery, Neurotraumatology and Neurosurgery Research Unit (UNINN), Vall d’Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Frank Richter
- Institute of Physiology I/Neurophysiology, Friedrich Schiller University Jena, Jena, Germany
| | - Oscar Herreras
- Department of Systems Neuroscience, Cajal Institute-CSIC, Madrid, Spain
| | | | - David O Okonkwo
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M Ross Bullock
- Department of Neurological Surgery, University of Miami, Miami, FL, USA
| | - Otto W Witte
- Hans Berger Department of Neurology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Peter Martus
- Institute for Clinical Epidemiology and Applied Biometry, University of Tübingen, Tübingen, Germany
| | - Arn MJM van den Maagdenberg
- Department of Human Genetics, Leiden University Medical Center, Leiden, the Netherlands
- Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands
| | - Michel D Ferrari
- Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands
| | - Rick M Dijkhuizen
- Center for Image Sciences, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Lori A Shutter
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Critical Care Medicine and Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Norberto Andaluz
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Mayfield Clinic, Cincinnati, OH, USA
| | - André P Schulte
- Department of Spinal Surgery, St. Franziskus Hospital Cologne, Cologne, Germany
| | - Brian MacVicar
- Department of Psychiatry, University of British Columbia, Vancouver, Canada
| | | | - Johannes Woitzik
- Center for Stroke Research Berlin, Charité University Medicine Berlin, Berlin, Germany
- Department of Neurosurgery, Charité University Medicine Berlin, Berlin, Germany
| | - Martin Lauritzen
- Department of Clinical Neurophysiology, Rigshospitalet, Copenhagen, Denmark
- Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Anthony J Strong
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Jed A Hartings
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Mayfield Clinic, Cincinnati, OH, USA
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Richter F, Eitner A, Leuchtweis J, Bauer R, Lehmenkühler A, Schaible HG. Effects of interleukin-1ß on cortical spreading depolarization and cerebral vasculature. J Cereb Blood Flow Metab 2017; 37:1791-1802. [PMID: 27037093 PMCID: PMC5435277 DOI: 10.1177/0271678x16641127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
During brain damage and ischemia, the cytokine interleukin-1ß is rapidly upregulated due to activation of inflammasomes. We studied whether interleukin-1ß influences cortical spreading depolarization, and whether lipopolysaccharide, often used for microglial stimulation, influences cortical spreading depolarizations. In anaesthetized rats, cortical spreading depolarizations were elicited by microinjection of KCl. Interleukin-1ß, the IL-1 receptor 1 antagonist, the GABAA receptor blocker bicuculline, and lipopolysaccharide were administered either alone or combined (interleukin-1ß + IL-1 receptor 1 antagonist; interleukin-1ß + bicuculline; lipopolysaccharide + IL-1 receptor 1 antagonist) into a local cortical treatment area. Using microelectrodes, cortical spreading depolarizations were recorded in a non-treatment and in the treatment area. Plasma extravasation in cortical grey matter was assessed with Evans blue. Local application of interleukin-1ß reduced cortical spreading depolarization amplitudes in the treatment area, but not at a high dose. This reduction was prevented by IL-1 receptor 1 antagonist and by bicuculline. However, interleukin-1ß induced pronounced plasma extravasation independently on cortical spreading depolarizations. Application of lipopolysaccharide reduced cortical spreading depolarization amplitudes but prolonged their duration; EEG activity was still present. These effects were also blocked by IL-1 receptor 1 antagonist. Interleukin-1ß evokes changes of neuronal activity and of vascular functions. Thus, although the reduction of cortical spreading depolarization amplitudes at lower doses of interleukin-1ß may reduce deleterious effects of cortical spreading depolarizations, the sum of interleukin-1ß effects on excitability and on the vasculature rather promote brain damaging mechanisms.
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Affiliation(s)
- Frank Richter
- 1 Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Annett Eitner
- 1 Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Johannes Leuchtweis
- 1 Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Reinhard Bauer
- 2 Institute of Molecular Cell Biology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | | | - Hans-Georg Schaible
- 1 Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
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41
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Hartings JA, Shuttleworth CW, Kirov SA, Ayata C, Hinzman JM, Foreman B, Andrew RD, Boutelle MG, Brennan KC, Carlson AP, Dahlem MA, Drenckhahn C, Dohmen C, Fabricius M, Farkas E, Feuerstein D, Graf R, Helbok R, Lauritzen M, Major S, Oliveira-Ferreira AI, Richter F, Rosenthal ES, Sakowitz OW, Sánchez-Porras R, Santos E, Schöll M, Strong AJ, Urbach A, Westover MB, Winkler MK, Witte OW, Woitzik J, Dreier JP. The continuum of spreading depolarizations in acute cortical lesion development: Examining Leão's legacy. J Cereb Blood Flow Metab 2017; 37:1571-1594. [PMID: 27328690 PMCID: PMC5435288 DOI: 10.1177/0271678x16654495] [Citation(s) in RCA: 256] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A modern understanding of how cerebral cortical lesions develop after acute brain injury is based on Aristides Leão's historic discoveries of spreading depression and asphyxial/anoxic depolarization. Treated as separate entities for decades, we now appreciate that these events define a continuum of spreading mass depolarizations, a concept that is central to understanding their pathologic effects. Within minutes of acute severe ischemia, the onset of persistent depolarization triggers the breakdown of ion homeostasis and development of cytotoxic edema. These persistent changes are diagnosed as diffusion restriction in magnetic resonance imaging and define the ischemic core. In delayed lesion growth, transient spreading depolarizations arise spontaneously in the ischemic penumbra and induce further persistent depolarization and excitotoxic damage, progressively expanding the ischemic core. The causal role of these waves in lesion development has been proven by real-time monitoring of electrophysiology, blood flow, and cytotoxic edema. The spreading depolarization continuum further applies to other models of acute cortical lesions, suggesting that it is a universal principle of cortical lesion development. These pathophysiologic concepts establish a working hypothesis for translation to human disease, where complex patterns of depolarizations are observed in acute brain injury and appear to mediate and signal ongoing secondary damage.
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Affiliation(s)
- Jed A Hartings
- 1 Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,2 Mayfield Clinic, Cincinnati, OH, USA
| | - C William Shuttleworth
- 3 Department of Neuroscience, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Sergei A Kirov
- 4 Department of Neurosurgery and Brain and Behavior Discovery Institute, Medical College of Georgia, Augusta, GA, USA
| | - Cenk Ayata
- 5 Neurovascular Research Unit, Department of Radiology, and Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jason M Hinzman
- 1 Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Brandon Foreman
- 6 Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - R David Andrew
- 7 Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Martyn G Boutelle
- 8 Department of Bioengineering, Imperial College London, London, United Kingdom
| | - K C Brennan
- 9 Department of Neurology, University of Utah, Salt Lake City, UT, USA.,10 Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, USA
| | - Andrew P Carlson
- 11 Department of Neurosurgery, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Markus A Dahlem
- 12 Department of Physics, Humboldt University of Berlin, Berlin, Germany
| | | | - Christian Dohmen
- 14 Department of Neurology, University of Cologne, Cologne, Germany
| | - Martin Fabricius
- 15 Department of Clinical Neurophysiology, Rigshospitalet, Glostrup, Denmark
| | - Eszter Farkas
- 16 Department of Medical Physics and Informatics, Faculty of Medicine, and Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Delphine Feuerstein
- 17 Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Rudolf Graf
- 17 Multimodal Imaging of Brain Metabolism, Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Raimund Helbok
- 18 Medical University of Innsbruck, Department of Neurology, Neurocritical Care Unit, Innsbruck, Austria
| | - Martin Lauritzen
- 15 Department of Clinical Neurophysiology, Rigshospitalet, Glostrup, Denmark.,19 Department of Neuroscience and Pharmacology and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Sebastian Major
- 13 Department of Neurology, Charité University Medicine, Berlin, Germany.,20 Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany.,21 Department of Experimental Neurology, Charité University Medicine, Berlin, Germany
| | - Ana I Oliveira-Ferreira
- 20 Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany.,21 Department of Experimental Neurology, Charité University Medicine, Berlin, Germany
| | - Frank Richter
- 22 Institute of Physiology/Neurophysiology, Jena University Hospital, Jena, Germany
| | - Eric S Rosenthal
- 5 Neurovascular Research Unit, Department of Radiology, and Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Oliver W Sakowitz
- 23 Department of Neurosurgery, Klinikum Ludwigsburg, Ludwigsburg, Germany.,24 Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Renán Sánchez-Porras
- 24 Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Edgar Santos
- 24 Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Michael Schöll
- 24 Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Anthony J Strong
- 25 Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London
| | - Anja Urbach
- 26 Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - M Brandon Westover
- 5 Neurovascular Research Unit, Department of Radiology, and Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Maren Kl Winkler
- 20 Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany
| | - Otto W Witte
- 26 Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany.,27 Brain Imaging Center, Jena University Hospital, Jena, Germany
| | - Johannes Woitzik
- 20 Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany.,28 Department of Neurosurgery, Charité University Medicine, Berlin, Germany
| | - Jens P Dreier
- 13 Department of Neurology, Charité University Medicine, Berlin, Germany.,20 Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany.,21 Department of Experimental Neurology, Charité University Medicine, Berlin, Germany
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Richter F, Dathe R, Seifert J, Banert K. [3,3]-Sigmatropic rearrangement of low-volatile propargyl thiocyanates to allenyl isothiocyanates using solution spray flash vacuum pyrolysis. J Flow Chem 2017. [DOI: 10.1556/1846.2016.00036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Frank Richter
- Chemnitz University of Technology, Organic Chemistry, Strasse der Nationen 62, 09111 Chemnitz, Germany
| | - René Dathe
- Chemnitz University of Technology, Organic Chemistry, Strasse der Nationen 62, 09111 Chemnitz, Germany
| | - Jennifer Seifert
- Chemnitz University of Technology, Organic Chemistry, Strasse der Nationen 62, 09111 Chemnitz, Germany
| | - Klaus Banert
- Chemnitz University of Technology, Organic Chemistry, Strasse der Nationen 62, 09111 Chemnitz, Germany
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Schöniger S, Gräfe H, Richter F, Helmschrodt C, Schoon HA. Expression of NOD1 and NOD2 transcripts in the healthy and diseased equine endometrium. PFERDEHEILKUNDE 2017. [DOI: 10.21836/pem20170301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Forte G, Chiarotto I, Richter F, Trieu V, Feroci M. Towards a sustainable electrochemical activation for recycling CO2: synthesis of bis-O-alkylcarbamates from aliphatic and benzyl diamines. REACT CHEM ENG 2017. [DOI: 10.1039/c7re00101k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optimized conditions for carbamate synthesis with activated CO2 are potentially applicable to sustainable large scale manufacturing of key polymeric resin precursors.
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Affiliation(s)
- Gianpiero Forte
- Dipartimento di Scienze di Base e Applicate per l'Ingegneria
- Sapienza Università di Roma
- 00161 Roma
- Italy
| | - Isabella Chiarotto
- Dipartimento di Scienze di Base e Applicate per l'Ingegneria
- Sapienza Università di Roma
- 00161 Roma
- Italy
| | | | - Vinh Trieu
- Covestro Deutschland AG
- 51365 Leverkusen
- Germany
| | - Marta Feroci
- Dipartimento di Scienze di Base e Applicate per l'Ingegneria
- Sapienza Università di Roma
- 00161 Roma
- Italy
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45
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Callegari S, Richter F, Chojnacka K, Jans DC, Lorenzi I, Pacheu-Grau D, Jakobs S, Lenz C, Urlaub H, Dudek J, Chacinska A, Rehling P. TIM29 is a subunit of the human carrier translocase required for protein transport. FEBS Lett 2016; 590:4147-4158. [PMID: 27718247 PMCID: PMC5215392 DOI: 10.1002/1873-3468.12450] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 08/29/2016] [Revised: 09/21/2016] [Accepted: 10/04/2016] [Indexed: 12/13/2022]
Abstract
Hydrophobic inner mitochondrial membrane proteins with internal targeting signals, such as the metabolite carriers, use the carrier translocase (TIM22 complex) for transport into the inner membrane. Defects in this transport pathway have been associated with neurodegenerative disorders. While the TIM22 complex is well studied in baker's yeast, very little is known about the mammalian TIM22 complex. Using immunoprecipitation, we purified the human carrier translocase and identified a mitochondrial inner membrane protein TIM29 as a novel component, specific to metazoa. We show that TIM29 is a constituent of the 440 kDa TIM22 complex and interacts with oxidized TIM22. Our analyses demonstrate that TIM29 is required for the structural integrity of the TIM22 complex and for import of substrate proteins by the carrier translocase.
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Affiliation(s)
- Sylvie Callegari
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | - Frank Richter
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | | | - Daniel C Jans
- Department of NanoBiophotonics, Mitochondrial Structure and Dynamics Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Neurology, University Medical Center Göttingen, Germany
| | - Isotta Lorenzi
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | - David Pacheu-Grau
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | - Stefan Jakobs
- Department of NanoBiophotonics, Mitochondrial Structure and Dynamics Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Neurology, University Medical Center Göttingen, Germany
| | - Christof Lenz
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Bioanalytics, Institute for Clinical Chemistry, University Medical Center Göttingen, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Bioanalytics, Institute for Clinical Chemistry, University Medical Center Göttingen, Germany
| | - Jan Dudek
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | | | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany.,MaxPlanck Institute for Biophysical Chemistry, Göttingen, Germany
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46
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Ebersberger A, Portz S, Meissner W, Schaible HG, Richter F. Effects of N-, P/Q- and L-type Calcium Channel Blockers on Nociceptive Neurones of the Trigeminal Nucleus with Input from the Dura. Cephalalgia 2016; 24:250-61. [PMID: 15030533 DOI: 10.1111/j.1468-2982.2004.00656.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In anaesthetized rats, extracellular recordings were made from neurones of the spinal trigeminal nucleus, involved in the processing of nociceptive input from the dura. Blockers of voltage-gated calcium channels (VGCCs) were administered topically to the exposed brainstem. Blockade of N-type (CaV2.2) channels reduced spontaneous activity and responses of the neurones to cold and chemical stimuli applied to the dura, suggesting that N-type channels regulate excitatory synaptic activation. Blockade of L-type (CaV1) channels enhanced spontaneous discharges of the neurones. Blockade of P/Q-type (CaV2.1) channels slightly decreased responses to chemical and cold stimuli but markedly increased spontaneous activity, an effect which was absent during concomitant application of GABA to the brainstem. The data suggest that P/Q-type VGCCs regulate a tonic synaptic inhibitory control of the brainstem neurones. The risk of migraine by genetic modifications of P/Q-type channels may thus be sought in disturbed inhibition in the network that processes nociceptive dura input.
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Affiliation(s)
- A Ebersberger
- Department of Physiology, University of Jena, Jena, Germany
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47
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Richter F, Koulen P, Kaja S. N-Palmitoylethanolamine Prevents the Run-down of Amplitudes in Cortical Spreading Depression Possibly Implicating Proinflammatory Cytokine Release. Sci Rep 2016; 6:23481. [PMID: 27004851 PMCID: PMC4804239 DOI: 10.1038/srep23481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 03/08/2016] [Indexed: 02/07/2023] Open
Abstract
Cortical spreading depression (CSD), a wave of neuronal depolarization in the cerebral cortex following traumatic brain injury or cerebral ischemia, significantly aggravates brain damage. Here, we tested whether N-palmitoylethanolamine (PEA), a substance that effectively reduces lesion volumes and neurological deficits after ischemic stroke, influences CSD. CSD was elicited chemically in adult rats and occurrence, amplitude, duration and propagation velocity of CSD was determined prior to and for 6 hours after intraperitoneal injection of PEA. The chosen systemic administration of PEA stabilized the amplitude of CSD for at least four hours and prevented the run-down of amplitudes that is typically observed and was also seen in untreated controls. The propagation velocity of the CSD waves was unaltered indicating stable neuronal excitability. The stabilization of CSD amplitudes by PEA indicates that inhibition or prevention of CSD does not underlie PEA's profound neuroprotective effect. Rather, PEA likely inhibits proinflammatory cytokine release thereby preventing the run-down of CSD amplitudes. This contribution of PEA to the maintenance of neuronal excitability in healthy tissue during CSD potentially adds to neuroprotection outside a damaged area, while other mechanisms control PEA-mediated neuroprotection in damaged tissue resulting from traumatic brain injury or cerebral ischemia.
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Affiliation(s)
- Frank Richter
- Institute of Physiology I/Neurophysiology, Jena University Hospital-Friedrich Schiller University Jena, Jena, Germany
| | - Peter Koulen
- Vision Research Center, Department of Ophthalmology, University of Missouri – Kansas City, School of Medicine, 2411 Holmes St., Kansas City, MO 64108, USA
- Department of Basic Medical Science, University of Missouri – Kansas City, School of Medicine, 2411 Holmes St., Kansas City, MO 64108, USA
| | - Simon Kaja
- Vision Research Center, Department of Ophthalmology, University of Missouri – Kansas City, School of Medicine, 2411 Holmes St., Kansas City, MO 64108, USA
- Departments of Ophthalmology and Molecular Pharmacology and Therapeutics, Loyola University Chicago, Stritch School of Medicine, 2160 South First Ave., Maywood, IL 60153, USA
- Edward Hines Jr. VA Hospital, Research Service, 5000 S Fifth Ave., Hines, IL 60141, USA
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48
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Herold S, Möhle S, Zirbes M, Richter F, Nefzger H, Waldvogel SR. Electrochemical Amination of Less-Activated Alkylated Arenes Using Boron-Doped Diamond Anodes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600048] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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Abstract
In the title compound, C17H19NO3, which was obtained by oxidation of the corresponding pyridine derivative, the dihedral angle between the benzene and the pyridine rings is 68.2 (1)°. In the crystal, C—H...O hydrogen bonds to carboxyl andN-oxide O-atom acceptors gives a cyclic dimer substructure with anR22(18) motif which is extended into a undulating sheet structure lying parallel to (100) through weak C—H...Ooxidehydrogen bonds. Also present are π–π ring interactions [ring centroid separation = 3.561 (2) Å].
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50
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