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Huss JC, Antreich SJ, Felhofer M, Mayer K, Eder M, Vieira Dias dos Santos AC, Ramer G, Lendl B, Gierlinger N. Hydrolyzable tannins are incorporated into the endocarp during sclerification of the water caltrop Trapa natans. Plant Physiol 2023; 194:94-105. [PMID: 37427803 PMCID: PMC10762508 DOI: 10.1093/plphys/kiad408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/16/2023] [Accepted: 06/16/2023] [Indexed: 07/11/2023]
Abstract
The water caltrop (Trapa natans) develops unique woody fruits with unusually large seeds among aquatic plants. During fruit development, the inner fruit wall (endocarp) sclerifies and forms a protective layer for the seed. Endocarp sclerification also occurs in many land plants with large seeds; however, in T. natans, the processes of fruit formation, endocarp hardening, and seed storage take place entirely underwater. To identify potential chemical and structural adaptations for the aquatic environment, we investigated the cell-wall composition in the endocarp at a young developmental stage, as well as at fruit maturity. Our work shows that hydrolyzable tannins-specifically gallotannins-flood the endocarp tissue during secondary wall formation and are integrated into cell walls along with lignin during maturation. Within the secondary walls of mature tissue, we identified unusually strong spectroscopic features of ester linkages, suggesting that the gallotannins and their derivatives are cross-linked to other wall components via ester bonds, leading to unique cell-wall properties. The synthesis of large amounts of water-soluble, defensive aromatic metabolites during secondary wall formation might be a fast way to defend seeds within the insufficiently lignified endocarp of T. natans.
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Affiliation(s)
- Jessica C Huss
- Institute of Biophysics, University of Natural Resources and Life Sciences (BOKU), 1190 Vienna, Austria
| | - Sebastian J Antreich
- Institute of Biophysics, University of Natural Resources and Life Sciences (BOKU), 1190 Vienna, Austria
| | - Martin Felhofer
- Institute of Biophysics, University of Natural Resources and Life Sciences (BOKU), 1190 Vienna, Austria
| | - Konrad Mayer
- Institute of Biophysics, University of Natural Resources and Life Sciences (BOKU), 1190 Vienna, Austria
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm, Germany
| | | | - Georg Ramer
- Institute of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
| | - Bernhard Lendl
- Institute of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
| | - Notburga Gierlinger
- Institute of Biophysics, University of Natural Resources and Life Sciences (BOKU), 1190 Vienna, Austria
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2
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Schamberger B, Ziege R, Anselme K, Ben Amar M, Bykowski M, Castro APG, Cipitria A, Coles RA, Dimova R, Eder M, Ehrig S, Escudero LM, Evans ME, Fernandes PR, Fratzl P, Geris L, Gierlinger N, Hannezo E, Iglič A, Kirkensgaard JJK, Kollmannsberger P, Kowalewska Ł, Kurniawan NA, Papantoniou I, Pieuchot L, Pires THV, Renner LD, Sageman-Furnas AO, Schröder-Turk GE, Sengupta A, Sharma VR, Tagua A, Tomba C, Trepat X, Waters SL, Yeo EF, Roschger A, Bidan CM, Dunlop JWC. Curvature in Biological Systems: Its Quantification, Emergence, and Implications across the Scales. Adv Mater 2023; 35:e2206110. [PMID: 36461812 DOI: 10.1002/adma.202206110] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Surface curvature both emerges from, and influences the behavior of, living objects at length scales ranging from cell membranes to single cells to tissues and organs. The relevance of surface curvature in biology is supported by numerous experimental and theoretical investigations in recent years. In this review, first, a brief introduction to the key ideas of surface curvature in the context of biological systems is given and the challenges that arise when measuring surface curvature are discussed. Giving an overview of the emergence of curvature in biological systems, its significance at different length scales becomes apparent. On the other hand, summarizing current findings also shows that both single cells and entire cell sheets, tissues or organisms respond to curvature by modulating their shape and their migration behavior. Finally, the interplay between the distribution of morphogens or micro-organisms and the emergence of curvature across length scales is addressed with examples demonstrating these key mechanistic principles of morphogenesis. Overall, this review highlights that curved interfaces are not merely a passive by-product of the chemical, biological, and mechanical processes but that curvature acts also as a signal that co-determines these processes.
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Affiliation(s)
- Barbara Schamberger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Ricardo Ziege
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Karine Anselme
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Université de Strasbourg, F-67081, Strasbourg, France
| | - Martine Ben Amar
- Department of Physics, Laboratoire de Physique de l'Ecole Normale Supérieure, 24 rue Lhomond, 75005, Paris, France
| | - Michał Bykowski
- Department of Plant Anatomy and Cytology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
| | - André P G Castro
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
- ESTS, Instituto Politécnico de Setúbal, 2914-761, Setúbal, Portugal
| | - Amaia Cipitria
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Group of Bioengineering in Regeneration and Cancer, Biodonostia Health Research Institute, 20014, San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
| | - Rhoslyn A Coles
- Cluster of Excellence, Matters of Activity, Humboldt-Universität zu Berlin, 10178, Berlin, Germany
| | - Rumiana Dimova
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Sebastian Ehrig
- Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
- Berlin Institute for Medical Systems Biology, 10115, Berlin, Germany
| | - Luis M Escudero
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla and Departamento de Biología Celular, Universidad de Sevilla, 41013, Seville, Spain
- Biomedical Network Research Centre on Neurodegenerative Diseases (CIBERNED), 28031, Madrid, Spain
| | - Myfanwy E Evans
- Institute for Mathematics, University of Potsdam, 14476, Potsdam, Germany
| | - Paulo R Fernandes
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Liesbet Geris
- Biomechanics Research Unit, GIGA In Silico Medicine, University of Liège, 4000, Liège, Belgium
| | - Notburga Gierlinger
- Institute of Biophysics, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (Boku), 1190, Vienna, Austria
| | - Edouard Hannezo
- Institute of Science and Technology Austria, 3400, Klosterneuburg, Austria
| | - Aleš Iglič
- Laboratory of Physics, Faculty of Electrical engineering, University of Ljubljana, Tržaška 25, SI-1000, Ljubljana, Slovenia
| | - Jacob J K Kirkensgaard
- Condensed Matter Physics, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
- Ingredients and Dairy Technology, Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg, Denmark
| | - Philip Kollmannsberger
- Center for Computational and Theoretical Biology, University of Würzburg, 97074, Würzburg, Germany
| | - Łucja Kowalewska
- Department of Plant Anatomy and Cytology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
| | - Nicholas A Kurniawan
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
| | - Ioannis Papantoniou
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (FORTH), Stadiou Str., 26504, Patras, Greece
| | - Laurent Pieuchot
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Université de Strasbourg, F-67081, Strasbourg, France
| | - Tiago H V Pires
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Lars D Renner
- Leibniz Institute of Polymer Research and the Max Bergmann Center of Biomaterials, 01069, Dresden, Germany
| | | | - Gerd E Schröder-Turk
- School of Physics, Chemistry and Mathematics, Murdoch University, 90 South St, Murdoch, WA, 6150, Australia
- Department of Materials Physics, Research School of Physics, The Australian National University, Canberra, ACT, 2600, Australia
| | - Anupam Sengupta
- Physics of Living Matter, Department of Physics and Materials Science, University of Luxembourg, L-1511, Luxembourg City, Grand Duchy of Luxembourg
| | - Vikas R Sharma
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Antonio Tagua
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla and Departamento de Biología Celular, Universidad de Sevilla, 41013, Seville, Spain
- Biomedical Network Research Centre on Neurodegenerative Diseases (CIBERNED), 28031, Madrid, Spain
| | - Caterina Tomba
- Univ Lyon, CNRS, INSA Lyon, Ecole Centrale de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, 69622, Villeurbanne, France
| | - Xavier Trepat
- ICREA at the Institute for Bioengineering of Catalonia, The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 08028, Barcelona, Spain
| | - Sarah L Waters
- Mathematical Institute, University of Oxford, OX2 6GG, Oxford, UK
| | - Edwina F Yeo
- Mathematical Institute, University of Oxford, OX2 6GG, Oxford, UK
| | - Andreas Roschger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Cécile M Bidan
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - John W C Dunlop
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
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Wenig C, Reppe F, Horbelt N, Spener J, Berendt F, Cremer T, Frey M, Burgert I, Eder M. Adhesives free bark panels: An alternative application for a waste material. PLoS One 2023; 18:e0280721. [PMID: 36689441 PMCID: PMC9870117 DOI: 10.1371/journal.pone.0280721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/07/2023] [Indexed: 01/24/2023] Open
Abstract
The proportion of bark in tree trunks is in the range of ~ 10-20%. This large amount of material is currently mainly considered as a by- or even waste-product by the timber processing industry. Recently, efforts towards the use of bark have been made, e.g. as a raw material to harvest different chemical compounds or as an additive for wood particle boards. Our motivation for this work was to keep the bark in an almost natural state and explore alternative processes and applications for use. The traditional method of de-barking tree trunks by peeling was used to harvest large bark pieces. Two pieces of peeled bark were placed crosswise, with the rhytidom side (outer bark) facing each other. After different conditioning steps, bark pieces were hot pressed to panels without adding adhesives. These experiments on bark samples of different Central European tree species suggest that production of panels with species dependent properties is possible and feasible. This is a step towards producing sustainable panels by using a natural waste material, while retaining its beneficial structure and its natural chemical composition.
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Affiliation(s)
- Charlett Wenig
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Friedrich Reppe
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Jaromir Spener
- Department of Forest Utilization and Timber Markets, Faculty of Forest and Environment, Eberswalde University for Sustainable Development, Eberswalde, Germany
| | - Ferréol Berendt
- Department of Forest Utilization and Timber Markets, Faculty of Forest and Environment, Eberswalde University for Sustainable Development, Eberswalde, Germany
| | - Tobias Cremer
- Department of Forest Utilization and Timber Markets, Faculty of Forest and Environment, Eberswalde University for Sustainable Development, Eberswalde, Germany
| | - Marion Frey
- Wood Materials Science, Institute for Building Materials, ETH Zürich, Zürich, Switzerland
| | - Ingo Burgert
- Wood Materials Science, Institute for Building Materials, ETH Zürich, Zürich, Switzerland
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
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Sagmeister T, Buhlheller C, Gubensaek N, Eder M, Grininger C, Petrowitsch L, Medina A, Millán C, Usón I, Vejzović Đ, Damisch E, Keller W, Pavkov-Keller T. A novel self-assembly mechanism for the S-layer in Lactobacillus acidophilus. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322096000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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5
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Gubensäk N, Eder M, Vejzovic D, Sagmeister T, Grininger C, Berni F, Damisch E, Malanovic N, Codee J, Pavkov-Keller T. The interaction of the Lactobacilli surface layer proteins with the lipotheichoic acids from the cell wall. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322096085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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6
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Grininger C, Sagmeister T, Petrowitsch L, Eder M, Pavkov-Keller T. Interactions of probiotic bacteria with the human dendritic cell receptor DC-SIGN. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322093901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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7
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Spies PA, Keplinger T, Horbelt N, Reppe F, Scoppola E, Eder M, Fratzl P, Burgert I, Rüggeberg M. Cellulose lattice strains and stress transfer in native and delignified wood. Carbohydr Polym 2022; 296:119922. [DOI: 10.1016/j.carbpol.2022.119922] [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] [Received: 04/08/2022] [Revised: 07/22/2022] [Accepted: 07/22/2022] [Indexed: 11/25/2022]
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8
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Huss JC, Antreich SJ, Bachmayr J, Xiao N, Eder M, Konnerth J, Gierlinger N. Topological Interlocking and Geometric Stiffening as Complementary Strategies for Strong Plant Shells. Adv Mater 2022; 34:e2109489. [PMID: 35023600 DOI: 10.1002/adma.202109489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
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9
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Lindtner T, Uzan AY, Eder M, Bar-On B, Elbaum R. Repetitive hygroscopic snapping movements in awns of wild oats. Acta Biomater 2021; 135:483-492. [PMID: 34506974 DOI: 10.1016/j.actbio.2021.08.048] [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: 05/26/2021] [Revised: 08/05/2021] [Accepted: 08/27/2021] [Indexed: 11/17/2022]
Abstract
Wild oat (Avena sterilis) is a very common annual plant species. Successful seed dispersion support its wide distribution in Africa, Asia and Europe. The seed dispersal units are made of two elongated stiff awns that are attached to a pointy compartment containing two seeds. The awns bend and twist with changes in humidity, pushing the seeds along and into the soil. The present work reveals the material structure of the awns, and models their functionality as two-link robotic arms. Based on nano-to-micro structure analyses the bending and twisting hygroscopic movements are explained. The coordinated movements of two sister awns attached to one dispersal unit were followed. Our work shows that sister awns intersect typically twice every wetting-drying cycle. Once the awns cross each other, epidermal silica hairs are suggested to lock subsequent movements, resulting in stress accumulation. Sudden release of the interlocked awns induces jumps of the dispersal unit and changes in its movement direction. Our findings propose a new role to epidermis silica hairs and a new facet of wild oat seed dispersion. Reversible jumping mechanism in multiple-awn seed dispersal units may serve as a blueprint for reversibly jumping robotic systems. STATEMENT OF SIGNIFICANCE: The seed dispersal unit of wild oats carries two elongated stiff awns covered by unidirectional silica hairs. The awns bend and twist with changes in humidity, pushing the seed capsule along and into the ground. We studied structures constructing the movement mechanism and modeled the awn as a two-link robotic arm. We show that sister awns, attached to the same seed capsule, intersect twice every drying cycle. Once the awns cross each other, the epidermal silica hairs are suggested to lock any subsequent movements, causing stress accumulation. Sudden release of the interlocked awns may cause the dispersal unit to jump and change its direction. Our findings suggest a new role to silica hairs and a new dispersal mechanism in multiple-awn seed dispersal units.
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Affiliation(s)
- Tom Lindtner
- School of Analytical Sciences Adlershof (SALSA), Humboldt-Universität zu Berlin, Albert-Einstein-Straße 5-9, 12489, Berlin-Adlershof, Germany; Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Str. 2, 12489, Berlin-Adlershof, Germany; The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, 7610001 Rehovot, Israel
| | - Avihai Yosef Uzan
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Michaela Eder
- Max-Planck-Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Benny Bar-On
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Rivka Elbaum
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, 7610001 Rehovot, Israel.
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Wenig C, Dunlop JWC, Hehemeyer-Cürten J, Reppe FJ, Horbelt N, Krauthausen K, Fratzl P, Eder M. Advanced materials design based on waste wood and bark. Philos Trans A Math Phys Eng Sci 2021; 379:20200345. [PMID: 34334027 PMCID: PMC8330000 DOI: 10.1098/rsta.2020.0345] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/11/2021] [Indexed: 06/13/2023]
Abstract
Trees belong to the largest living organisms on Earth and plants in general are one of our main renewable resources. Wood as a material has been used since the beginning of humankind. Today, forestry still provides raw materials for a variety of applications, for example in the building industry, in paper manufacturing and for various wood products. However, many parts of the tree, such as reaction wood, branches and bark are often discarded as forestry residues and waste wood, used as additives in composite materials or burned for energy production. More advanced uses of bark include the extraction of chemical substances for glues, food additives or healthcare, as well as the transformation to advanced carbon materials. Here, we argue that a proper understanding of the internal fibrous structure and the resulting mechanical behaviour of these forest residues allows for the design of materials with greatly varying properties and applications. We show that simple and cheap treatments can give tree bark a leather-like appearance that can be used for the construction of shelters and even the fabrication of woven textiles. This article is part of the theme issue 'Bio-derived and bioinspired sustainable advanced materials for emerging technologies (part 1)'.
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Affiliation(s)
- Charlett Wenig
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - John W. C. Dunlop
- Department of the Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Morphophysics Group, Salzburg, Austria
| | - Johanna Hehemeyer-Cürten
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Friedrich J. Reppe
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Karin Krauthausen
- Cluster of Excellence ‘Matters of Activity. Image Space Material’ at Humboldt Universität zu Berlin, Berlin, Germany
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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Abstract
Wood is a prototypical biological material, which adapts to mechanical requirements. The microarchitecture of cellulose fibrils determines the mechanical properties of woody materials, as well as their actuation properties, based on absorption and desorption of water. Herein it is argued that cellulose fiber orientation corresponds to an analog code that determines the response of wood to humidity as an active material. Examples for the harvesting of wood activity, as well as bioinspiration, are given.
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Affiliation(s)
- Michaela Eder
- Max-Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, Potsdam, 14476, Germany
| | - Wolfgang Schäffner
- Institute of Cultural History and Theory, Humboldt Universität zu Berlin, Berlin, 10117, Germany
| | - Ingo Burgert
- ETH Zürich, Wood Materials Science, Zürich, 8093, Switzerland
- Empa, Cellulose & Wood Materials Laboratory, Dübendorf, 8600, Switzerland
| | - Peter Fratzl
- Max-Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, Potsdam, 14476, Germany
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12
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Sonego M, Madia M, Eder M, Fleck C, Pessan LA. Microstructural features influencing the mechanical performance of the Brazil nut (Bertholletia excelsa) mesocarp. J Mech Behav Biomed Mater 2021; 116:104306. [PMID: 33513460 DOI: 10.1016/j.jmbbm.2020.104306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/26/2020] [Accepted: 12/29/2020] [Indexed: 11/17/2022]
Abstract
Brazil nut (Bertholletia excelsa) fruits are capable of resisting high mechanical forces when released from trees as tall as 50 m, as well as during animal dispersal by sharp-teethed rodents. Thick mesocarp plays a crucial part in seed protection. We investigated the role of microstructure and how sclereids, fibers, and voids affect nutshell performance using compression, tensile and fracture toughness tests. Fractured specimens were analyzed through scanning electron microscopy (SEM) and microtomography (microCT). Mesocarp showed high deformability (strain at max. stress of ~30%) under compression loading, a critical tensile strength of ~24.9 MPa, a Weibull modulus of ~3, and an elastic modulus of ~2 GPa in the tensile test. The fracture toughness, estimated through the work of fracture of SENB tests, reached ~2 kJ/m2. The thick and strong walls of mesocarp cells, with a weaker boundary between them (compound middle lamella), promote a tortuous intercellular crack path. Several toughening mechanisms, such as crack deflection, breaking of fiber bundles, fiber pullout and bridging as well as crack branching, occur depending on how fiber bundles and voids are oriented.
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Affiliation(s)
- Marilia Sonego
- Graduate Program in Materials Science and Engineering (PPGCEM), Federal University of São Carlos (UFSCar), São Carlos, 13.565-905, SP, Brazil.
| | - Mauro Madia
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12205, Berlin, Germany
| | - Michaela Eder
- Max-Planck-Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, Potsdam, 14476, Germany
| | - Claudia Fleck
- Materials Science & Engineering, Technische Universität Berlin, Berlin, 10623, Germany
| | - Luiz A Pessan
- Graduate Program in Materials Science and Engineering (PPGCEM), Federal University of São Carlos (UFSCar), São Carlos, 13.565-905, SP, Brazil; Department of Materials Engineering, Federal University of São Carlos, via Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
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13
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Huss JC, Antreich SJ, Bachmayr J, Xiao N, Eder M, Konnerth J, Gierlinger N. Topological Interlocking and Geometric Stiffening as Complementary Strategies for Strong Plant Shells. Adv Mater 2020; 32:e2004519. [PMID: 33079407 DOI: 10.1002/adma.202004519] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/03/2020] [Indexed: 05/20/2023]
Abstract
Many organisms encapsulate their embryos in hard, protective shells. While birds and reptiles largely rely on mineralized shells, plants often develop highly robust lignocellulosic shells. Despite the abundance of hard plant shells, particularly nutshells, it remains unclear which fundamental properties drive their mechanical stability. This multiscale analysis of six prominent (nut)shells (pine, pistachio, walnut, pecan, hazelnut, and macadamia) reveals geometric and structural strengthening mechanisms on the cellular and macroscopic length scales. The strongest tissues, found in walnut and pistachio, exploit the topological interlocking of 3D-puzzle cells and thereby outperform the fiber-reinforced structure of macadamia under tensile and compressive loading. On the macroscopic scale, strengthening occurs via an increased shell thickness, spherical shape, small size, and a lack of extended sutures. These functional interrelations suggest that simple geometric modifications are a powerful and resource-efficient strategy for plants to enhance the fracture resistance of entire shells and their tissues. Understanding the interplay between structure, geometry, and mechanics in hard plant shells provides new perspectives on the evolutionary diversification of hard seed coats, as well as insights for nutshell-based material applications.
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Affiliation(s)
- Jessica C Huss
- Institute of Biophysics, University of Natural Resources and Life Sciences Vienna, Vienna, 1190, Austria
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam-Golm, 14476, Germany
| | - Sebastian J Antreich
- Institute of Biophysics, University of Natural Resources and Life Sciences Vienna, Vienna, 1190, Austria
| | - Jakob Bachmayr
- Institute of Biophysics, University of Natural Resources and Life Sciences Vienna, Vienna, 1190, Austria
| | - Nannan Xiao
- Institute of Biophysics, University of Natural Resources and Life Sciences Vienna, Vienna, 1190, Austria
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam-Golm, 14476, Germany
| | - Johannes Konnerth
- Institute of Wood Technology and Renewable Materials, University of Natural Resources and Life Sciences Vienna, Tulln an der Donau, 3430, Austria
| | - Notburga Gierlinger
- Institute of Biophysics, University of Natural Resources and Life Sciences Vienna, Vienna, 1190, Austria
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14
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Wessels B, Seyfferth C, Escamez S, Vain T, Antos K, Vahala J, Delhomme N, Kangasjärvi J, Eder M, Felten J, Tuominen H. An AP2/ERF transcription factor ERF139 coordinates xylem cell expansion and secondary cell wall deposition. New Phytol 2019; 224:1585-1599. [PMID: 31125440 DOI: 10.1111/nph.15960] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 03/03/2019] [Accepted: 05/19/2019] [Indexed: 05/14/2023]
Abstract
Differentiation of xylem elements involves cell expansion, secondary cell wall (SCW) deposition and programmed cell death. Transitions between these phases require strict spatiotemporal control. The function of Populus ERF139 (Potri.013G101100) in xylem differentiation was characterized in transgenic overexpression and dominant repressor lines of ERF139 in hybrid aspen (Populus tremula × tremuloides). Xylem properties, SCW chemistry and downstream targets were analyzed in both types of transgenic trees using microscopy techniques, Fourier transform-infrared spectroscopy, pyrolysis-GC/MS, wet chemistry methods and RNA sequencing. Opposite phenotypes were observed in the secondary xylem vessel sizes and SCW chemistry in the two different types of transgenic trees, supporting the function of ERF139 in suppressing the radial expansion of vessel elements and stimulating accumulation of guaiacyl-type lignin and possibly also xylan. Comparative transcriptomics identified genes related to SCW biosynthesis (LAC5, LBD15, MYB86) and salt and drought stress-responsive genes (ANAC002, ABA1) as potential direct targets of ERF139. The phenotypes of the transgenic trees and the stem expression profiles of ERF139 potential target genes support the role of ERF139 as a transcriptional regulator of xylem cell expansion and SCW formation, possibly in response to osmotic changes of the cells.
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Affiliation(s)
- Bernard Wessels
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, SE-90187, Sweden
| | - Carolin Seyfferth
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, SE-90187, Sweden
| | - Sacha Escamez
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, SE-90187, Sweden
| | - Thomas Vain
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, SE-90183, Sweden
| | - Kamil Antos
- Department of Integrative Medical Biology, Umeå University, Umeå, SE-90187, Sweden
| | - Jorma Vahala
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, VIPS, University of Helsinki, Viikinkaari 1 (POB65), Helsinki, FI-00014, Finland
| | - Nicolas Delhomme
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, SE-90183, Sweden
| | - Jaakko Kangasjärvi
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, VIPS, University of Helsinki, Viikinkaari 1 (POB65), Helsinki, FI-00014, Finland
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, 14476, Germany
| | - Judith Felten
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, SE-90183, Sweden
| | - Hannele Tuominen
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, SE-90187, Sweden
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15
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Huss JC, Spaeker O, Gierlinger N, Merritt DJ, Miller BP, Neinhuis C, Fratzl P, Eder M. Temperature-induced self-sealing capability of Banksia follicles. J R Soc Interface 2019; 15:rsif.2018.0190. [PMID: 29925581 DOI: 10.1098/rsif.2018.0190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 05/18/2018] [Indexed: 11/12/2022] Open
Abstract
Many plants in fire-prone regions retain their seeds in woody fruits in the plant canopy until the passage of a fire causes the fruit to open and release the seeds. To enable this function, suitable tissues are required that effectively store and protect seeds until they are released. Here, we show that three different species of the Australian genus Banksia incorporate waxes at the interface of the two valves of the follicle enclosing the seeds, which melt between 45°C and 55°C. Since the melting temperature of the waxes is lower than the opening temperatures of the follicles in all investigated species (B. candolleana, B. serrata, B. attenuata), we propose that melting of these waxes allows the sealing of micro-fissures at the interface of the two valves while they are still closed. Such a self-sealing mechanism likely contributes to the structural integrity of the seed pods, and benefits seed viability and persistence during storage on the plants. Furthermore, we show in a simplified, bioinspired model system that temperature treatments seal artificially applied surface cuts and restore the barrier properties.
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Affiliation(s)
- Jessica C Huss
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Oliver Spaeker
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Notburga Gierlinger
- Department of Nanobiotechnology, Institute for Biophysics, BOKU - University of Natural Resources and Life Sciences, 1190 Vienna, Austria
| | - David J Merritt
- Kings Park Science, Department of Biodiversity Conservation and Attractions, Kings Park, WA 6005, Australia.,School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia
| | - Ben P Miller
- Kings Park Science, Department of Biodiversity Conservation and Attractions, Kings Park, WA 6005, Australia.,School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia
| | - Christoph Neinhuis
- Institute for Botany, Technische Universität Dresden, 01062 Dresden, Germany
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
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16
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Antreich SJ, Xiao N, Huss JC, Horbelt N, Eder M, Weinkamer R, Gierlinger N. The Puzzle of the Walnut Shell: A Novel Cell Type with Interlocked Packing. Adv Sci (Weinh) 2019; 6:1900644. [PMID: 31453070 PMCID: PMC6702760 DOI: 10.1002/advs.201900644] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/25/2019] [Indexed: 05/20/2023]
Abstract
The outer protective shells of nuts can have remarkable toughness and strength, which are typically achieved by a layered arrangement of sclerenchyma cells and fibers with a polygonal form. Here, the tissue structure of walnut shells is analyzed in depth, revealing that the shells consist of a single, never reported cell type: the polylobate sclereid cells. These irregularly lobed cells with concave and convex parts are on average interlocked with 14 neighboring cells. The result is an intricate arrangement that cannot be disassembled when conceived as a 3D puzzle. Mechanical testing reveals a significantly higher ultimate tensile strength of the interlocked walnut cell tissue compared to the sclerenchyma tissue of a pine seed coat lacking the lobed cell structure. The higher strength value of the walnut shell is explained by the observation that the crack cannot simply detach intact cells but has to cut through the lobes due to the interlocking. Understanding the identified nutshell structure and its development will inspire biomimetic material design and packaging concepts. Furthermore, these unique unit cells might be of special interest for utilizing nutshells in terms of food waste valorization, considering that walnuts are the most widespread tree nuts in the world.
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Affiliation(s)
- Sebastian J. Antreich
- Department of NanobiotechnologyUniversity of Natural Resources and Life Sciences Vienna (BOKU)1190ViennaAustria
| | - Nannan Xiao
- Department of NanobiotechnologyUniversity of Natural Resources and Life Sciences Vienna (BOKU)1190ViennaAustria
| | - Jessica C. Huss
- Department of NanobiotechnologyUniversity of Natural Resources and Life Sciences Vienna (BOKU)1190ViennaAustria
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesScience Park Potsdam‐Golm14424PotsdamGermany
| | - Nils Horbelt
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesScience Park Potsdam‐Golm14424PotsdamGermany
| | - Michaela Eder
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesScience Park Potsdam‐Golm14424PotsdamGermany
| | - Richard Weinkamer
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesScience Park Potsdam‐Golm14424PotsdamGermany
| | - Notburga Gierlinger
- Department of NanobiotechnologyUniversity of Natural Resources and Life Sciences Vienna (BOKU)1190ViennaAustria
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17
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Horbelt N, Eder M, Bertinetti L, Fratzl P, Harrington MJ. Unraveling the Rapid Assembly Process of Stiff Cellulosic Fibers from Mistletoe Berries. Biomacromolecules 2019; 20:3094-3103. [DOI: 10.1021/acs.biomac.9b00648] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Luca Bertinetti
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Matthew J. Harrington
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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18
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Hofmaier J, Bodensohn R, Garny S, Reiner M, Eder M, Dinc Y, Corradini S, Belka C, Niyazi M. PO-0933 Single isocenter SRS for multiple brain metastases: dosimetric comparison of DCAT and VMAT. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31353-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Huss JC, Fratzl P, Dunlop JWC, Merritt DJ, Miller BP, Eder M. Protecting Offspring Against Fire: Lessons From Banksia Seed Pods. Front Plant Sci 2019; 10:283. [PMID: 30930918 PMCID: PMC6424018 DOI: 10.3389/fpls.2019.00283] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/20/2019] [Indexed: 05/22/2023]
Abstract
Wildfires are a natural component in many terrestrial ecosystems and often play a crucial role in maintaining biodiversity, particularly in the fire-prone regions of Australia. A prime example of plants that are able to persist in these regions is the genus Banksia. Most Banksia species that occur in fire-prone regions produce woody seed pods (follicles), which open during or soon after fire to release seeds into the post-fire environment. For population persistence, many Banksia species depend on recruitment from these canopy-stored seeds. Therefore, it is critical that their seeds are protected from heat and rapid oxidation during fire. Here, we show how different species of Banksia protect their seeds inside follicles while simultaneously opening up when experiencing fire. The ability of the follicles to protect seeds from heat is demonstrated by intense 180 s experimental burns, in which the maximum temperatures near the seeds ranged from ∼75°C for B. serrata to ∼90°C for B. prionotes and ∼95°C for B. candolleana, contrasting with the mean surface temperature of ∼450°C. Many seeds of native Australian plants, including those of Banksia, are able to survive these temperatures. Structural analysis of individual follicles from these three Banksia species demonstrates that all of them rely on a multicomponent system, consisting of two valves, a porous separator and a thin layer of air surrounding the seeds. The particular geometric arrangement of these components determines the rate of heat transfer more than the tissue properties alone, revealing that a strong embedment into the central rachis can compensate for thin follicle valves. Furthermore, we highlight the role of the separator as an important thermal insulator. Our study suggests that the genus Banksia employs a variety of combinations in terms of follicle size, valve thickness, composition and geometric arrangement to effectively protect canopy-stored seeds during fire.
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Affiliation(s)
- Jessica C. Huss
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, Potsdam, Germany
- *Correspondence: Jessica C. Huss, Michaela Eder,
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, Potsdam, Germany
| | - John W. C. Dunlop
- Department of Chemistry and Physics of Materials, University of Salzburg, Salzburg, Austria
| | - David J. Merritt
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Perth, WA, Australia
- School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Ben P. Miller
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Perth, WA, Australia
- School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, Potsdam, Germany
- *Correspondence: Jessica C. Huss, Michaela Eder,
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20
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Abstract
The bulk of Earth's biological materials consist of few base substances-essentially proteins, polysaccharides, and minerals-that assemble into large varieties of structures. Multifunctionality arises naturally from this structural complexity: An example is the combination of rigidity and flexibility in protein-based teeth of the squid sucker ring. Other examples are time-delayed actuation in plant seed pods triggered by environmental signals, such as fire and water, and surface nanostructures that combine light manipulation with mechanical protection or water repellency. Bioinspired engineering transfers some of these structural principles into technically more relevant base materials to obtain new, often unexpected combinations of material properties. Less appreciated is the huge potential of using bioinspired structural complexity to avoid unnecessary chemical diversity, enabling easier recycling and, thus, a more sustainable materials economy.
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Affiliation(s)
- Michaela Eder
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Research Campus Golm, 14424 Potsdam, Germany
| | - Shahrouz Amini
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Research Campus Golm, 14424 Potsdam, Germany
| | - Peter Fratzl
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Research Campus Golm, 14424 Potsdam, Germany.
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21
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Aberer F, Tripolt N, Scharnagl H, Zedler J, Eder M, Oulhaj A, Stojakovic T, Sourij H. Combined serum free light chain levels are associated with carotid atherosclerosis in type 2 diabetes mellitus. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Wolzt M, Eder M, Weltermann A, Entlicher J, Eichler HG, Kyrle PA. Comparison of the Effects of Different Low Molecular Weight Heparins on the Hemostatic System Activation In Vivo in Man. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1657645] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryIn a double-blind, randomized, cross-over study the effects of single subcutaneous doses of 120 anti-Xa units/kg body wt. of three different low molecular weight heparin (LMWH) preparations were investigated in 15 healthy subjects by determination of thrombin-antithrombin El complex (TAT), prothrombin fragment 1.2 (fl.2), and β-thromboglobin (β-TG) in shed blood and in venous blood.Certoparin, dalteparin, and enoxaparin significantly inhibited coagulation activation marker formation in shed blood. The substantial inhibition of TAT and fl.2 formation was slightly more pronounced in response to certoparin. β-TG was decreased following certoparin and enoxaparin, but not following dalteparin. However, no difference between groups was detectable. A small but consistent decrease of fl.2 formation in venous blood was noted for all LMWHs and dalteparin and enoxaparin, but not certoparin, inhibited TAT formation. Only a minor impact of the three LMWH preparations was noted on β-TG plasma concentrations.Our data indicate that the studied LMWH preparations have a major impact on blood clotting in the activated state and inhibit in vivothe hemostatic system to a comparable extent.
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Affiliation(s)
- Michael Wolzt
- The Department of Clinical Pharmacology, Allgemeines Krankenhaus Wien, Austria
| | - Michaela Eder
- The Department of Clinical Pharmacology, Allgemeines Krankenhaus Wien, Austria
| | - Ansgar Weltermann
- The Department of Internal Medicine I/Division of Hematology and Hemostaseology Vienna University, Allgemeines Krankenhaus Wien, Austria
| | - Jesusa Entlicher
- The Department of Clinical Pharmacology, Allgemeines Krankenhaus Wien, Austria
| | - Hans-Georg Eichler
- The Department of Clinical Pharmacology, Allgemeines Krankenhaus Wien, Austria
| | - Paul A Kyrle
- The Department of Internal Medicine I/Division of Hematology and Hemostaseology Vienna University, Allgemeines Krankenhaus Wien, Austria
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23
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Dedic N, Pöhlmann ML, Richter JS, Mehta D, Czamara D, Metzger MW, Dine J, Bedenk BT, Hartmann J, Wagner KV, Jurik A, Almli LM, Lori A, Moosmang S, Hofmann F, Wotjak CT, Rammes G, Eder M, Chen A, Ressler KJ, Wurst W, Schmidt MV, Binder EB, Deussing JM. Cross-disorder risk gene CACNA1C differentially modulates susceptibility to psychiatric disorders during development and adulthood. Mol Psychiatry 2018; 23:533-543. [PMID: 28696432 PMCID: PMC5822460 DOI: 10.1038/mp.2017.133] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/25/2017] [Accepted: 05/04/2017] [Indexed: 12/17/2022]
Abstract
Single-nucleotide polymorphisms (SNPs) in CACNA1C, the α1C subunit of the voltage-gated L-type calcium channel Cav1.2, rank among the most consistent and replicable genetics findings in psychiatry and have been associated with schizophrenia, bipolar disorder and major depression. However, genetic variants of complex diseases often only confer a marginal increase in disease risk, which is additionally influenced by the environment. Here we show that embryonic deletion of Cacna1c in forebrain glutamatergic neurons promotes the manifestation of endophenotypes related to psychiatric disorders including cognitive decline, impaired synaptic plasticity, reduced sociability, hyperactivity and increased anxiety. Additional analyses revealed that depletion of Cacna1c during embryonic development also increases the susceptibility to chronic stress, which suggest that Cav1.2 interacts with the environment to shape disease vulnerability. Remarkably, this was not observed when Cacna1c was deleted in glutamatergic neurons during adulthood, where the later deletion even improved cognitive flexibility, strengthened synaptic plasticity and induced stress resilience. In a parallel gene × environment design in humans, we additionally demonstrate that SNPs in CACNA1C significantly interact with adverse life events to alter the risk to develop symptoms of psychiatric disorders. Overall, our results further validate Cacna1c as a cross-disorder risk gene in mice and humans, and additionally suggest a differential role for Cav1.2 during development and adulthood in shaping cognition, sociability, emotional behavior and stress susceptibility. This may prompt the consideration for pharmacological manipulation of Cav1.2 in neuropsychiatric disorders with developmental and/or stress-related origins.
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Affiliation(s)
- N Dedic
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - M L Pöhlmann
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - J S Richter
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - D Mehta
- Queensland Brain Institute, University of Queensland, St. Lucia, QLD, Australia
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - D Czamara
- Queensland Brain Institute, University of Queensland, St. Lucia, QLD, Australia
| | - M W Metzger
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - J Dine
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - B T Bedenk
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - J Hartmann
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, MA, USA
| | - K V Wagner
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - A Jurik
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
| | - L M Almli
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - A Lori
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - S Moosmang
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
| | - F Hofmann
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
| | - C T Wotjak
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - G Rammes
- Clinic of Anaesthesiology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - M Eder
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - A Chen
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
- The Ruhman Family Laboratory for Research on the Neurobiology of Stress, Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - K J Ressler
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, MA, USA
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - W Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - M V Schmidt
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - E B Binder
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - J M Deussing
- Molecular Neurogenetics, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
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24
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Aberer F, Tripolt NJ, Scharnagl H, Zedler J, Eder M, Oulhaj A, Stojakovic T, Sourij H. Combined serum free light chain levels are associated with carotid atherosclerosis in type 2 diabetes mellitus. Diab Vasc Dis Res 2018; 15:162-164. [PMID: 29189047 DOI: 10.1177/1479164117743939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Patients with type 2 diabetes mellitus face an increased risk of cardiovascular events compared to non-diabetic counterparts. Chronic inflammation and activation of the immune system, including B-lymphocyte maturation is believed to play a role in atherosclerosis. Recent investigations suggest combined serum free light chains as a potential biomarker for cardiovascular events. The aim of this analysis was to investigate the association of combined serum free light chain with carotid atherosclerosis in subjects with type 2 diabetes mellitus. METHODS We performed a cross-sectional analysis of data from a prospective single centre 2-year study of 97 patients with type 2 diabetes mellitus and insufficiently controlled cardiovascular risk factors. Complete data on combined serum free light chain, high-sensitivity C-reactive protein were available for 75 subjects. RESULTS We analysed data of 26 female and 49 male subjects, aged 59 ± 8 years. Their mean body mass index was 31.6 ± 4.4 kg/m2, and the median B-score was 2 (interquartile range: 0-3). Significant positive correlations between combined serum free light chain and the B-score ( r = 0.38; p = 0.001) as well as combined serum free light chain and high-sensitivity C-reactive protein ( r = 0.35; p = 0.002) were observed. The adjusted odds ratio for a half standard deviation increase in combined serum free light chain was 1.48 (95% confidence interval: 1.05-2.05) in an ordinal regression model for carotid B-score. CONCLUSION In our study, combined serum free light chain was associated with carotid atherosclerosis in subjects with type 2 diabetes mellitus.
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Affiliation(s)
- Felix Aberer
- 1 Division of Endocrinology and Diabetology, Cardiovascular Diabetology Research Group, Medical University of Graz, Graz, Austria
| | - Norbert Joachim Tripolt
- 1 Division of Endocrinology and Diabetology, Cardiovascular Diabetology Research Group, Medical University of Graz, Graz, Austria
| | - Hubert Scharnagl
- 2 Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Julian Zedler
- 1 Division of Endocrinology and Diabetology, Cardiovascular Diabetology Research Group, Medical University of Graz, Graz, Austria
| | - Michaela Eder
- 1 Division of Endocrinology and Diabetology, Cardiovascular Diabetology Research Group, Medical University of Graz, Graz, Austria
| | - Abderrahim Oulhaj
- 3 College of Medicine and Health Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Tatjana Stojakovic
- 2 Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Harald Sourij
- 1 Division of Endocrinology and Diabetology, Cardiovascular Diabetology Research Group, Medical University of Graz, Graz, Austria
- 4 Center for Biomarker Research in Medicine (CBmed), Graz, Austria
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25
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Leroux O, Eder M, Saxe F, Dunlop JWC, Popper ZA, Viane RLL, Knox JP. Comparative in situ analysis reveals the dynamic nature of sclerenchyma cell walls of the fern Asplenium rutifolium. Ann Bot 2018; 121:345-358. [PMID: 29293865 PMCID: PMC5808801 DOI: 10.1093/aob/mcx167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 11/14/2017] [Indexed: 06/01/2023]
Abstract
Background and Aims A key structural adaptation of vascular plants was the evolution of specialized vascular and mechanical tissues, innovations likely to have generated novel cell wall architectures. While collenchyma is a strengthening tissue typically found in growing organs of angiosperms, a similar tissue occurs in the petiole of the fern Asplenium rutifolium. Methods The in situ cell wall (ultra)structure and composition of this tissue was investigated and characterized mechanically as well as structurally through nano-indentation and wide-angle X-ray diffraction, respectively. Key Results Structurally the mechanical tissue resembles sclerenchyma, while its biomechanical properties and molecular composition both share more characteristics with angiosperm collenchyma. Cell wall thickening only occurs late during cell expansion or after cell expansion has ceased. Conclusions If the term collenchyma is reserved for walls that thicken during expansive growth, the mechanical tissue in A. rutifolium represents sclerenchyma that mimics the properties of collenchyma and has the ability to modify its mechanical properties through sclerification. These results support the view that collenchyma does not occur in ferns and most probably evolved in angiosperms.
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Affiliation(s)
- Olivier Leroux
- Department of Biology, Ghent University, K.L. Ledeganckstraat, Gent, Belgium
| | - Michaela Eder
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Wissenschaftspark Golm, Am Muhlenberg, Potsdam, Germany
| | - Friederike Saxe
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Wissenschaftspark Golm, Am Muhlenberg, Potsdam, Germany
| | - John W C Dunlop
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Wissenschaftspark Golm, Am Muhlenberg, Potsdam, Germany
| | - Zoë A Popper
- Botany and Plant Science and The Ryan Institute for Environmental, Marine and Energy Research, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Ronald L L Viane
- Department of Biology, Ghent University, K.L. Ledeganckstraat, Gent, Belgium
| | - J Paul Knox
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK
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26
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Port M, Majewski M, Herodin F, Valente M, Drouet M, Forcheron F, Tichy A, Sirak I, Zavrelova A, Malkova A, Becker BV, Veit DA, Waldeck S, Badie C, O'Brien G, Christiansen H, Wichmann J, Eder M, Beutel G, Vachelova J, Doucha-Senf S, Abend M. Validating Baboon Ex Vivo and In Vivo Radiation-Related Gene Expression with Corresponding Human Data. Radiat Res 2018; 189:389-398. [PMID: 29373091 DOI: 10.1667/rr14958.1] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The research for high-throughput diagnostic tests for victims of radio/nuclear incidents remains ongoing. In this context, we have previously identified candidate genes that predict risk of late-occurring hematologic acute radiation syndrome (HARS) in a baboon model. The goal of the current study was to validate these genes after radiation exposure in humans. We also examined ex vivo relative to in vivo measurements in both species and describe dose-response relationships. Eighteen baboons were irradiated in vivo to simulate different patterns of partial- or total-body irradiation (TBI), corresponding to an equivalent dose of 2.5 or 5 Sv. Human in vivo blood samples were obtained from patients exposed to different dose ranges: diagnostic computerized tomography (CT; 0.004-0.018 Sv); radiotherapy for prostate cancer (0.25-0.3 Sv); and TBI of leukemia patients (2 × 1.5 or 2 × 2 Sv, five patients each). Peripheral whole blood of another five baboons and human samples from five healthy donors were cultivated ex vivo and irradiated with 0-4 Sv. RNA was isolated pairwise before and 24 h after irradiation and converted into cDNA. Gene expression of six promising candidate genes found previously by us in a baboon model ( WNT3, POU2AF1, CCR7, ARG2, CD177, WLS), as well as three genes commonly used in ex vivo whole blood experiments ( FDXR, PCNA, DDB2) was measured using qRT-PCR. We confirmed the six baboon candidate genes in leukemia patients. However, expression for the candidate gene FDXR showed an inverse relationship, as it was downregulated in baboons and upregulated in human samples. Comparisons among the in vivo and ex vivo experiments revealed the same pattern in both species and indicated peripheral blood cells to represent the radiation-responsive targets causing WNT3 and POU2AF1 gene expression changes. CCR7, ARG2, CD177 and WLS appeared to be altered due to radiation-responsive targets other than the whole blood cells. Linear dose-response relationships of FDXR, WNT3 and POU2AF1 using human ex vivo samples corresponded with human in vivo samples, suggesting that ex vivo models for in vivo dose estimates can be used over a wide dose range (0.001-5 Sv for POU2AF1). In summary, we validated six baboon candidate genes in humans, but the FDXR measurements underscored the importance of independent assessments even when candidates from animal models have striking gene sequence homology to humans. Since whole blood cells represented the same radiation-responsive targets for FDXR, WNT3 and POU2AF1 gene expression changes, ex vivo cell culture models can be utilized for in vivo dose estimates over a dose range covering up to 3.5 log scales. These findings might be a step forward in the development of a gene expression-based high-throughput diagnostic test for populations involved in large-scale radio/nuclear incidents.
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Affiliation(s)
- M Port
- a Bundeswehr Institute of Radiobiology, Munich, Germany
| | - M Majewski
- a Bundeswehr Institute of Radiobiology, Munich, Germany
| | - F Herodin
- b Institut de Recherche Biomedicale des Armees, Bretigny-sur-Orge, France
| | - M Valente
- b Institut de Recherche Biomedicale des Armees, Bretigny-sur-Orge, France
| | - M Drouet
- b Institut de Recherche Biomedicale des Armees, Bretigny-sur-Orge, France
| | - F Forcheron
- b Institut de Recherche Biomedicale des Armees, Bretigny-sur-Orge, France
| | - A Tichy
- c Departments of Radiobiology, Faculty of Military Health Sciences, University of Defence, Brno and Biomedical Research Centre
| | - I Sirak
- d Oncology and Radiotherapy, and 4th Department of Internal Medicine - Hematology, University Hospital Hradec Králové, Hradec Králové, Czech Republic
| | - A Zavrelova
- d Oncology and Radiotherapy, and 4th Department of Internal Medicine - Hematology, University Hospital Hradec Králové, Hradec Králové, Czech Republic
| | - A Malkova
- e Department of Hygiene and Preventive Medicine, Faculty of Medicine, Charles University, Hradec Králové, Czech Republic
| | - B V Becker
- a Bundeswehr Institute of Radiobiology, Munich, Germany
| | - D A Veit
- f Bundeswehr Central Hospital, Department of Radiology and Neuroradiology, Koblenz, Germany
| | - S Waldeck
- f Bundeswehr Central Hospital, Department of Radiology and Neuroradiology, Koblenz, Germany
| | - C Badie
- g Cancer Mechanisms and Biomarkers Group, Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, United Kingdom
| | - G O'Brien
- g Cancer Mechanisms and Biomarkers Group, Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, United Kingdom
| | | | | | - M Eder
- i Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - G Beutel
- i Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - J Vachelova
- j Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Řež, Czech Republic
| | - S Doucha-Senf
- a Bundeswehr Institute of Radiobiology, Munich, Germany
| | - M Abend
- a Bundeswehr Institute of Radiobiology, Munich, Germany
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Gattringer KB, Suchomel M, Eder M, Lassnigg AM, Graninger W, Presterl E. Time-Dependent Effects of Rifampicin on Staphylococcal Biofilms. Int J Artif Organs 2018; 33:621-6. [DOI: 10.1177/039139881003300907] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2010] [Indexed: 11/15/2022]
Abstract
Objective To test the time-dependent effects of rifampicin on established biofilms of Staphylococcus epidermidis isolated from patients with cardiac implant infections and catheter-related bacteremia. Methods Biofilms were grown in microtiter plates for 24 hours, dyed and stained with crystal violet. The mean optical density (OD) was used for quantification. The OD ratio (ODr = OD of the treated biofilm/OD of the untreated biofilm) was used to measure changes in the thickness of the biofilms over the time. Biofilms were incubated with rifampicin (0.6 mg/mL) for 1, 5, 15, 30 and 60 minutes. Unstained biofilms were sonicated and plated on Columbia agar for time-kill curves. Results The incubation of the biofilms with rifampicin led to a significant reduction of the OD of the biofilms within 1 minute (ODr baseline: 1; ODr 1 min: 0.333 ± 0.131) (p<0.001). With regard to bacterial killing, rifampicin reduced the mean log count, but viable bacteria were still grown from biofilms in 13 out of 28 isolates despite MIC values < 0.01 mg/L. Conclusions In conclusion, our results confirm that rifampicin at a concentration of 1.2 mg/mL immediately reduces established biofilms formed by S. epidermidis although it is not bactericidal despite very low MICs at planktonic conditions.
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Affiliation(s)
| | - Miranda Suchomel
- Department of Medical Microbiology, Institute of Hygiene, Medical University of Vienna, Vienna - Austria
| | - Michaela Eder
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Medical University of Vienna, Vienna - Austria
| | - Andrea M. Lassnigg
- Department of Anesthesia and General Intensive Care Medicine, Div. of Cardiothoracic Anesthesia, Medical University of Vienna, Vienna - Austria
| | - Wolfgang Graninger
- Department of Medicine I, Div. Infectious Diseases, Medical University of Vienna, Vienna - Austria
| | - Elisabeth Presterl
- Department of Medicine I, Div. Infectious Diseases, Medical University of Vienna, Vienna - Austria
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28
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Presterl E, Lassnigg A, Eder M, Reichmann S, Hirschl AM, Graninger W. Effects of Tigecycline, Linezolid and Vancomycin on Biofilms of Viridans Streptococci Isolates from Patients with Endocarditis. Int J Artif Organs 2018; 30:798-804. [DOI: 10.1177/039139880703000909] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Endocarditis, and prosthetic valve endocarditis in particular, is a serious disease with high morbidity and mortality. We investigate the effects of tigecycline, linezolid and vancomycin on biofilms of viridans group streptococci (VGS) isolated from patients with definite native or prosthetic valve endocarditis. Methods and Results Ten of 20 VGS blood stream isolates from patients with endocarditis formed biofilms in the microtiter plate biofilm model. The minimal inhibitory concentrations (MIC) for tigecycline, linezolid and vancomycin were determined using the microdilution broth method. Biofilms were grown for 24 hours and were incubated with tigecycline, linezolid and vancomycin at increasing concentrations from 1-128x MIC of the isolate being tested. Biofilm thickness was quantified by measuring the optical density (OD) after dyeing it with crystal violet. The incubation of the biofilms with tigecycline, linezolid or vancomycin resulted in a significant reduction of OD compared to the control biofilm without antibiotic (p<0.05). The optical density ratio (Odr) decreased significantly at 2x MIC for tigecycline, and at 8x MIC for linezolid and vancomycin (p<0.05). Although biofilms persisted even at the highest antibiotic concentrations of 128x MIC, bacterial growth was eradicated starting at concentrations of 16x MIC for vancomycin and of 32x MIC for linezolid, but not for tigecycline, up to a concentration of 128x MIC. Conclusions In the present study on viridans streptococci isolated from patients with endocarditis, tigecycline and linezolid reduced the density of the biofilms as effectively as vancomycin. However, linezolid and vancomycin were bactericidal at higher concentrations. Linezolid and vancomycin at very high doses may be useful in the treatment of biofilm-associated diseases caused by VGS infections.
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Affiliation(s)
- E. Presterl
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna - Austria
- Institute of Hygiene and Medical Microbiology, Division of Clinical Microbiology, Medical University of Vienna, Vienna - Austria
| | - A. Lassnigg
- Department of Anesthesia and General Intensive Care Medicine, Division of Cardiothoracic and Vascular Anesthesia, Medical University of Vienna, Vienna - Austria
| | - M. Eder
- Max-Planck-Institute Of Colloids And Interfaces, Department Of Biomaterials, Potsdam - Germany
| | - S. Reichmann
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna - Austria
| | - A. M. Hirschl
- Institute of Hygiene and Medical Microbiology, Division of Clinical Microbiology, Medical University of Vienna, Vienna - Austria
| | - W. Graninger
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna - Austria
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29
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Huss JC, Schoeppler V, Merritt DJ, Best C, Maire E, Adrien J, Spaeker O, Janssen N, Gladisch J, Gierlinger N, Miller BP, Fratzl P, Eder M. Climate-Dependent Heat-Triggered Opening Mechanism of Banksia Seed Pods. Adv Sci (Weinh) 2018; 5:1700572. [PMID: 29375977 PMCID: PMC5770687 DOI: 10.1002/advs.201700572] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/03/2017] [Indexed: 05/22/2023]
Abstract
Heat-triggered fruit opening and delayed release of mature seeds are widespread among plants in fire-prone ecosystems. Here, the material characteristics of the seed-containing follicles of Banksia attenuata (Proteaceae), which open in response to heat frequently caused by fire, are investigated. Material analysis reveals that long-term dimensional stability and opening temperatures of follicles collected across an environmental gradient increase as habitats become drier, hotter, and more fire prone. A gradual increase in the biaxial curvature of the hygroscopic valves provides the follicles in the driest region with the highest flexural rigidity. The irreversible deformation of the valves for opening is enabled via a temperature-dependent reduction of the elastic modulus of the innermost tissue layer, which then allows releasing the stresses previously generated by shrinkage of the fiber bundles in the adjacent layer during follicle drying. These findings illustrate the level of sophistication by which this species optimizes its fruit opening mechanism over a large distribution range with varying environmental conditions, and may not only have great relevance for developing biomimetic actuators, but also for elucidating the species' capacity to cope with climatic changes.
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Affiliation(s)
- Jessica C. Huss
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesResearch Campus Golm14424PotsdamGermany
| | - Vanessa Schoeppler
- BCUBE‐Center for Molecular BioengineeringTechnische Universität DresdenDresden01307Germany
| | - David J. Merritt
- Kings Park and Botanic GardenKings ParkWA6005Australia
- School of Biological SciencesThe University of Western AustraliaCrawleyWA6009Australia
| | - Christine Best
- Kings Park and Botanic GardenKings ParkWA6005Australia
- School of Biological SciencesThe University of Western AustraliaCrawleyWA6009Australia
| | - Eric Maire
- INSA‐LyonMATEISCNRS UMR5510University of LyonF‐69621VilleurbanneFrance
| | - Jérôme Adrien
- INSA‐LyonMATEISCNRS UMR5510University of LyonF‐69621VilleurbanneFrance
| | - Oliver Spaeker
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesResearch Campus Golm14424PotsdamGermany
| | - Nils Janssen
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesResearch Campus Golm14424PotsdamGermany
| | | | - Notburga Gierlinger
- Department of NanobiotechnologyUniversity of Natural Resources and Life Science (BOKU)Muthgasse 11/II1190ViennaAustria
| | - Ben P. Miller
- Kings Park and Botanic GardenKings ParkWA6005Australia
- School of Biological SciencesThe University of Western AustraliaCrawleyWA6009Australia
| | - Peter Fratzl
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesResearch Campus Golm14424PotsdamGermany
| | - Michaela Eder
- Department of BiomaterialsMax‐Planck Institute of Colloids and InterfacesResearch Campus Golm14424PotsdamGermany
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30
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Henckens MJAG, Printz Y, Shamgar U, Dine J, Lebow M, Drori Y, Kuehne C, Kolarz A, Eder M, Deussing JM, Justice NJ, Yizhar O, Chen A. CRF receptor type 2 neurons in the posterior bed nucleus of the stria terminalis critically contribute to stress recovery. Mol Psychiatry 2017; 22:1691-1700. [PMID: 27550842 DOI: 10.1038/mp.2016.133] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 12/20/2022]
Abstract
The bed nucleus of the stria terminalis (BNST) is critical in mediating states of anxiety, and its dysfunction has been linked to stress-related mental disease. Although the anxiety-related role of distinct subregions of the anterior BNST was recently reported, little is known about the contribution of the posterior BNST (pBNST) to the behavioral and neuroendocrine responses to stress. Previously, we observed abnormal expression of corticotropin-releasing factor receptor type 2 (CRFR2) to be associated with post-traumatic stress disorder (PTSD)-like symptoms. Here, we found that CRFR2-expressing neurons within the pBNST send dense inhibitory projections to other stress-related brain regions (for example, the locus coeruleus, medial amygdala and paraventricular nucleus), implicating a prominent role of these neurons in orchestrating the neuroendocrine, autonomic and behavioral response to stressful situations. Local CRFR2 activation by urocortin 3 depolarized the cells, increased the neuronal input resistance and increased firing of action potentials, indicating an enhanced excitability. Furthermore, we showed that CRFR2-expressing neurons within the pBNST are critically involved in the modulation of the behavioral and neuroendocrine response to stress. Optogenetic activation of CRFR2 neurons in the pBNST decreased anxiety, attenuated the neuroendocrine stress response, ameliorated stress-induced anxiety and impaired the fear memory for the stressful event. Moreover, activation following trauma exposure reduced the susceptibility for PTSD-like symptoms. Optogenetic inhibition of pBNST CRFR2 neurons yielded opposite effects. These data indicate the relevance of pBNST activity for adaptive stress recovery.
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Affiliation(s)
- M J A G Henckens
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.,Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Y Printz
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - U Shamgar
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - J Dine
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - M Lebow
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.,Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Y Drori
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.,Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - C Kuehne
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - A Kolarz
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - M Eder
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - J M Deussing
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - N J Justice
- Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Sciences Center, Houston, TX, USA
| | - O Yizhar
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - A Chen
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.,Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
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31
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Affiliation(s)
- M. Eder
- Artificial Intelligence Laboratory, Institute for Informatics, University of Zurich, Zurich, Switzerland
| | - F. Hisch
- Institut für Informatik, Technische Universität München, Munich, Germany
| | - H. Hauser
- Department of Engineering Mathematics, University of Bristol, Bristol, UK
- Bristol Robotics Laboratory, Bristol, UK
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32
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Baer A, Schmidt S, Haensch S, Eder M, Mayer G, Harrington MJ. Mechanoresponsive lipid-protein nanoglobules facilitate reversible fibre formation in velvet worm slime. Nat Commun 2017; 8:974. [PMID: 29042549 PMCID: PMC5645397 DOI: 10.1038/s41467-017-01142-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 08/22/2017] [Indexed: 12/23/2022] Open
Abstract
Velvet worms eject a fluid capture slime that can be mechanically drawn into stiff biopolymeric fibres. Remarkably, these fibres can be dissolved by extended exposure to water, and new regenerated fibres can be drawn from the dissolved fibre solution-indicating a fully recyclable process. Here, we perform a multiscale structural and compositional investigation of this reversible fabrication process with the velvet worm Euperipatoides rowelli, revealing that biopolymeric fibre assembly is facilitated via mono-disperse lipid-protein nanoglobules. Shear forces cause nanoglobules to self-assemble into nano- and microfibrils, which can be drawn into macroscopic fibres with a protein-enriched core and lipid-rich coating. Fibre dissolution in water leads to re-formation of nanoglobules, suggesting that this dynamic supramolecular assembly of mechanoresponsive protein-building blocks is mediated by reversible non-covalent interactions. These findings offer important mechanistic insights into the role of mechanochemical processes in bio-fibre formation, providing potential avenues for sustainable material fabrication processes.Velvet worms expel a fluid slime that, under shear force, forms stiff fibres that can be dissolved and then regenerated. Here, the authors reveal that the recyclability of these biopolymers relies on mechanoresponsive lipid-protein nanoglobules in the slime that reversibly self-assemble into fibrils.
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Affiliation(s)
- Alexander Baer
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany.
| | - Stephan Schmidt
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Sebastian Haensch
- Center for Advanced Imaging (CAi), Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Michaela Eder
- Dept. of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424, Potsdam, Germany
| | - Georg Mayer
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| | - Matthew J Harrington
- Dept. of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424, Potsdam, Germany. .,Dept. of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada.
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Jonigk D, Mägel L, Mitschke K, Braubach P, Golpon H, Welte T, Janciauskiene S, Gottlieb J, Eder M, Stadler M, Warnecke G, Haverich A, Kreipe H, Kühnel M, Länger F. Similar molecular subtypes of lung injury patterns in interstitial lung disease, stem cell and lung transplantation. Pneumologie 2017. [DOI: 10.1055/s-0037-1598300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D Jonigk
- Institute of Pathology, Hannover Medical School (Mhh)
| | - L Mägel
- Institute of Pathology, Hannover Medical School (Mhh)
| | - K Mitschke
- Institute of Pathology, Hannover Medical School (Mhh)
| | - P Braubach
- Institute of Pathology, Hannover Medical School (Mhh)
| | - H Golpon
- Department of Respiratory Medicine, Hannover Medical School (Mhh)
| | - T Welte
- Department of Respiratory Medicine, Hannover Medical School (Mhh)
| | - S Janciauskiene
- Department of Respiratory Medicine, Hannover Medical School (Mhh)
| | - J Gottlieb
- Department of Respiratory Medicine, Hannover Medical School (Mhh)
| | - M Eder
- Department of Hematology, Hannover Medical School (Mhh)
| | - M Stadler
- Department of Hematology, Hannover Medical School (Mhh)
| | - G Warnecke
- Department of Thoracic Surgery, Hannover Medical School (Mhh)
| | - A Haverich
- Department of Thoracic Surgery, Hannover Medical School (Mhh)
| | - H Kreipe
- Institute of Pathology, Hannover Medical School (Mhh)
| | - M Kühnel
- Institute of Pathology, Hannover Medical School (Mhh)
| | - F Länger
- Institute of Pathology, Hannover Medical School (Mhh)
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34
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Saxe F, Weichold S, Reinecke A, Lisec J, Döring A, Neumetzler L, Burgert I, Eder M. Age Effects on Hypocotyl Mechanics. PLoS One 2016; 11:e0167808. [PMID: 27977698 PMCID: PMC5158002 DOI: 10.1371/journal.pone.0167808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 11/21/2016] [Indexed: 11/18/2022] Open
Abstract
Numerous studies deal with composition and molecular processes involved in primary cell wall formation and alteration in Arabidopsis. However, it still remains difficult to assess the relation between physiological properties and mechanical function at the cell wall level. The thin and fragile structure of primary cell walls and their large biological variability, partly related to structural changes during growth, make mechanical experiments challenging. Since, to the best of our knowledge, there is no reliable data in the literature about how the properties of the fully elongated zone of hypocotyls change with age. We studied in a series of experiments on two different seed batches the tensile properties the region below the growth zone of 4 to 7 day old etiolated Arabidopsis hypocotyls. Additionally, we analysed geometrical parameters, hypocotyl density and cellulose content as individual traits and their relation to tissue mechanics. No significant differences of the mechanical parameters of the non-growing region between 5–7 day old plants could be found whereas in 4 day old plants both tensile stiffness and ultimate tensile stress were significantly lower than in the older plants. Furthermore hypocotyl diameters and densities remain almost the same for 5, 6 and 7 day old seedlings. Naturally, hypocotyl lengths increase with age. The evaluation whether the choice–age or length—influences the mechanical properties showed that both are equally applicable sampling parameters. Additionally, our detailed study allows for the estimation of biological variability, connections between mechanics and hypocotyl age could be established and complement the knowledge on biochemistry and genetics affecting primary plant cell wall growth. The application of two different micromechanical devices for testing living Arabidopsis hypocotyls allows for emphasizing and discussing experimental limitations and for presenting a wide range of possibilities to address current and future questions related to plant cell wall mechanics, synthesis and growth in combination with molecular biology methodologies.
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Affiliation(s)
- Friederike Saxe
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
- Cluster of Excellence »Image Knowledge Gestaltung«, Humboldt University, Berlin, Germany
- * E-mail: (FS); (ME)
| | - Susann Weichold
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
| | - Antje Reinecke
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
| | - Jan Lisec
- Plant Cell Wall Group, Max-Planck-Institute of Molecular Plant Physiology, Potsdam, Germany
- Charite´-Universitätsmedizin Berlin, Molekulares Krebsforschungszentrum (MKFZ), Berlin, Germany
| | - Anett Döring
- Plant Cell Wall Group, Max-Planck-Institute of Molecular Plant Physiology, Potsdam, Germany
- targenomix GmbH, Potsdam, Germany
| | - Lutz Neumetzler
- Plant Cell Wall Group, Max-Planck-Institute of Molecular Plant Physiology, Potsdam, Germany
| | - Ingo Burgert
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
- Institute for Building Materials, Federal Institute of Technology, Zurich, Switzerland
- Applied Wood Materials Laboratory, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - Michaela Eder
- Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
- * E-mail: (FS); (ME)
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Martelli C, Castanha P, Cortes F, Rodrigues L, Marques E, Eder M. High levels of exposure of Zika and Dengue infections detected using plaque reduction neutralization assay in Brazil. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.11.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Eder M, Bezerra L, Outtes F, Dimech G, Ximenes R, Dhalia R, Cordeiro D, Marques E, Martelli C. Arbovirus epidemiology in pregnant women in Pernambuco state, Brazil. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.11.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Eder M. ["Breast Reconstruction Fellowship" at the University of British Columbia, Vancouver, Canada]. HANDCHIR MIKROCHIR P 2016; 48:379-381. [PMID: 27706528 DOI: 10.1055/s-0042-117508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- M Eder
- Klinikum rechts der Isar, Technische Universität München, Forschungsgruppe CAPS-Computer Aided Plastic Surgery, Klinik für Plastische Chirurgie und Handchirurgie, München, Deutschland
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Radchenko V, Engle JW, Roy C, Griswold J, Nortier MF, Birnbaum ER, Brugh M, Mirzadeh S, John KD, Fassbender ME, Zhai C, Franssen GM, Petrik M, Laverman P, Decristoforo C, Samia AM, Véronique DP, Brigitte G, Summer D, Kroess A, Rangger C, Haas H, Laverman P, Gerben F, von Guggenberg E, Decristoforo C, Bolzati C, Salvarese N, Refosco F, Meléndez-Alafort L, Carpanese D, Rosato A, Saviano M, Del Gatto A, Comegna D, Zaccaro L, Billaud E, Ahamed M, Cleeren F, Shahbazali E, Noël T, Hessel V, Verbruggen A, Bormans G, Cleeren F, Lecina J, Koole M, Verbruggen A, Bormans G, Lugatoa B, Stucchia S, Turollaa EA, Giulianoa L, Toddea S, Ferraboschib P, Klok RP, Mooijer MPJ, Hendrikse NH, Windhorst AD, Collet C, Petry N, Chrétien F, Karcher G, Pellegrini-Moïse N, Lamandé-Langle S, Pfaff S, Philippe C, Mitterhauser M, Hacker M, Wadsak W, Guérard F, Lee YS, Gouard S, Baidoo K, Alliot C, Chérel M, Brechbiel MW, Gestin JF, Lam K, Chan C, Reilly RM, Paillas S, Marshall J, Pouget JP, Sosabowski J, Briard E, Auberson YP, Reilly J, Healy M, Sykes D, Paulus A, Lichtenbelt WVM, Mottaghy F, Bauwens M, Baranski AC, Schäfer M, Bauder-Wüst U, Haberkorn U, Eder M, Kopka K, Chaussard M, Hosten B, Vignal N, Tsoupko-Sitnikov V, Hernio N, Hontonnou F, Merlet P, Poyet JL, Sarda-Mantel L, Rizzo-Padoin N, Cardinale J, Schäfer M, Benešová M, Bauder-Wüst U, Seibert O, Giesel F, Haberkorn U, Eder M, Kopka K, Nematallah M, Michel P, Samia AM, Véronique DP, Roger L, Brigitte G, Fernandez-Maza L, Rivera-Marrero S, Capote AP, Parrado-Gallego A, Fernandez-Gomez I, Balcerzyk M, Sablon-Carrazana M, Perera-Pintado A, Merceron-Martinez D, Acosta-Medina E, Rodriguez-Tanty C, Attili B, Ahamed M, Bormans G, Philippe C, Zeilinger M, Scherer T, Fürnsinn C, Dumanic M, Wadsak W, Hacker M, Mitterhauser M, Janssen B, Vugts DJ, Molenaar GT, Funke U, Kruijer PS, Dollé F, Bormans G, Lammertsma AA, Windhorst AD, Vermeulen K, Ahamed M, Schnekenburger M, Froeyen M, Olberg DE, Diederich M, Bormansa G, Raaphorst RM, Luurtsema G, Lammertsma AA, Elsinga PH, Windhorst AD, Rotteveel L, Funke U, ten Dijke P, Bogaard HJ, Lammertsma AA, Windhorst AD, Song L, Able S, Falzone N, Kersemans V, Vallis K, Carta D, Salvarese N, Sihver W, Gao F, Pietzsch HJ, Biondi B, Ruzza P, Refosco F, Bolzati C, Haubner R, Finkensted A, Stegmair A, Rangger C, Decristoforo C, Zoller H, Virgolini IJ, Pooters I, Lotz M, Wierts R, Mottaghy F, Bauwens M, Forsback S, Jörgen B, Riikka K, Karageorgou M, Radović M, Tsoukalas C, Antic B, Gazouli M, Paravatou-Petsotas M, Xanthopouls S, Calamiotou M, Stamopoulos D, Vranješ-Durić S, Bouziotis P, Lunev AS, Larenkov AA, Petrosova KA, Klementyeva OE, Kodina GE, Kvernenes OH, Adamsen TCH, Martin R, Weidlich S, Zerges AM, Gameiro C, Lazarova N, Müllera M, Luurtsema G, de Vries M, Ghyoot M, van der Woude G, Zijlma R, Dierckx R, Boersma HH, Elsinga PH, Lambrecht FY, Er O, Ince M, Avci CB, Gunduz C, Sarı FA, Ocakoglu K, Er O, Ersoz OA, Lambrecht FY, Ince M, Kayabasi C, Gunduz C, Kniess T, Meister S, Fischer S, Steinbach J, Ashfaq R, Iqbal S, ullah Khan I, Iglesias-Jerez R, Martín-Banderas L, Perera-Pintado A, Borrego-Dorado I, Farinha-Antunes I, Kwizera C, Lacivita E, Lucente E, Niso M, De Giorgio P, Perrone R, Colabufo NA, Elsinga PH, Leopoldo M, Vaulina VV, Fedorova OS, Orlovskaja VV, Chen СL, Li GY, Meng FC, Liu RS, Wang HE, Krasikova RN, Meléndez-Alafort L, Abozeid M, Ferro-Flores G, Negri A, Bello M, Uzunov N, Paiusco M, Esposito J, Rosato A, Meléndez-Alafort L, Bolzati C, Ferro-Flores G, Salvarese N, Carpanese D, Abozeid M, Rosato A, Uzunov N, Palmieri L, Verbrugghen T, Glassner M, Hoogenboom R, Staelens S, Wyffels L, Orlovskaja VV, Kuznetsova OF, Fedorova OS, Maleev VI, Belokon YN, Geolchanyan A, Saghyan AS, Mu L, Schibli R, Ametamey SM, Krasikova RN, Revunov E, Malmquist J, Johnström P, Van Valkenburgh J, Steele D, Halldin C, Schou M, Osati S, Paquette M, Beaudoin S, Ali H, Guerin B, Leyton JV, van Lier JE, Di Iorio V, Iori M, Donati C, Lanzetta V, Capponi PC, Rubagotti S, Dreger T, Kunkel F, Asti M, Zhai C, Rangger C, Summer D, Haas H, Decristoforo C, Kijprayoon S, Ruangma A, Ngokpol S, Tuamputsha S, Filp U, Pees A, Taddei C, Pekošak A, Gee AD, Poot AJ, Windhorst AD, Gunay MS, Ozer AY, Erdogan S, Baysal I, Guilloteau D, Chalon S, Galli F, Artico M, Taurone S, Bianchi E, Weintraub BD, Skudlinski M, Signore A, Lepareur N, Noiret N, Hindré F, Lacœuille F, Benoist E, Garin E, Trejo-Ballado F, Zamora-Romo E, Manrique-Arias JC, Gama-Romero HM, Contreras-Castañon G, Tecuapetla-Chantes RG, Avila-Rodriguez MA, Kvaternik H, Hausberger D, Zink C, Rumpf B, Aigner RM, Kvaternik H, Hausberger D, Rumpf B, Aigner RM, Janković D, Lakić M, Savić A, Ristić S, Nikolić N, Vukadinović A, Sabo TJ, Vranješ-Đurić S, Vranješ-Đurić S, Radović M, Janković D, Nikolić N, Goya GF, Calatayud P, Spasojević V, Antić B, Goblet D, Gameiro C, Lazarova N, Gameiro C, Oxley I, Abrunhosa A, Kramer V, Vosjan M, Spaans A, Vats K, Satpati D, Sarma HD, Banerjee S, Wojdowska W, Pawlak DW, Parus LJ, Garnuszek P, Mikołajczak R, Pijarowska-Kruszyna J, Jaron A, Kachniarz A, Malkowski B, Garnuszek P, Mikolajczak R, Ilem-Ozdemir D, Caglayan-Orumlu O, Asikoglu M, Ilem-Ozdemir D, Caglayan-Orumlu O, Asikoglu M, Eveliina A, Semi H, Timo S, Simo V, Esa K, Pertti L, De Simone M, Pascali G, Carzoli L, Quaglierini M, Telleschi M, Salvadori PA, Lam P, Aistleitner M, Eichinger R, Artner C, Nakka S, MC HK, Al-Qahtani M, Al-Qahtani M, Al-Malki Y, Mambilima N, Rubow SM, Berroterán-Infante N, Hacker M, Mitterhauser M, Wadsak W, Funke U, Cleeren F, Lecina J, Gallardo R, Verbruggen AM, Bormans G, Ramos-Membrive R, Brotons A, Quincoces G, Inchaurraga L, de Redín IL, Morán V, García-García B, Irache JM, Peñuelas I, Trabelsi M, Cooper MS, Abella A, Fuente T, Montellano AJ, Martínez T, Rabadan R, Meseguer-Olmo L, Lehtiniemi P, Yim C, Mikkola K, Nuutila P, Solin O, von Guggenberg E, Rangger C, Mair C, Balogh L, Pöstényi Z, Pawlak D, Mikołajczak R, Socan A, Peitl PK, Krošelj M, Rangger C, Decristoforo C, Collet C, Remy S, Didier R, Vergote T, Karcher G, Véran N, Pawlak D, Maurin M, Garnuszek P, Karczmarczyk U, Mikołajczak R, Fredericia P, Severin G, Groesser T, Köster U, Jensen M, Leonte R, Puicea FD, Raicu A, Min EA, Serban R, Manda G, Niculae D, Zerna M, Schieferstein H, Müller A, Berndt M, Yim CB, Mikkola K, Nuutila P, Solin O, Seifert D, Ráliš J, Lebeda O, Selivanova SV, Senta H, Lavallée É, Caouette L, Turcotte É, Lecomte R, Kochovska MZ, Ivanovska EJ, Jokic VS, Ackova DG, Smilkov K, Makreski P, Stafilov T, Janevik-Ivanovska E, Alemu A, Muchira JM, Wanjeh DM, Janevik-Ivanovska E, Janevik-Ivanovska E, Zdravev Z, Bhonsle U, Alberto OJJ, Duatti A, Angelovska B, Stojanovska Z, Sarafinovska ZA, Bosnakovski D, Gorgieva-Ackova D, Smilkov K, Drakalska E, Venkatesh M, Gulaboski R, Colin DJ, Inkster JAH, Germain S, Seimbille Y. 18th European Symposium on Radiopharmacy and Radiopharmaceuticals. EJNMMI Radiopharm Chem 2016. [PMCID: PMC5843810 DOI: 10.1186/s41181-016-0012-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OP03 Selective extraction of medically-related radionuclides from proton-irradiated thorium targets V. Radchenko, J.W. Engle, C. Roy, J. Griswold, M.F. Nortier, E.R. Birnbaum, M. Brugh, S. Mirzadeh, K. D. John, M.E. Fassbender OP04 Comparison of [68Ga]FSC(succ-RGD)3 and [68Ga]NODAGA-RGD for PET imaging of αvβ3 integrin expression Chuangyan Zhai, Gerben M. Franssen, Milos Petrik, Peter Laverman, Clemens Decristoforo OP05 A new NPY-Y1R targeting peptide for breast cancer PET imaging Ait-Mohand Samia, Dumulon-Perreault Véronique, Guérin Brigitte OP06 The influence of multivalency on CCK 2 receptor targeting D. Summer, A. Kroess, C. Rangger, H. Haas, P. Laverman, F. Gerben, E. von Guggenberg, C.Decristoforo OP07 SPECT Imaging of αvβ3 Expression by [99mTc(N)PNP43]- Bifunctional Chimeric RGD Peptide not Cross-Reacting with αvβ5 Cristina Bolzati, Nicola Salvarese, Fiorenzo Refosco, Laura Meléndez-Alafort, Debora Carpanese, Antonio Rosato, Michele Saviano, Annarita Del Gatto, Daniela Comegna, Laura Zaccaro OP09 New dienophiles for the inverse-electron-demand Diels-Alder reaction and for pretargeted PET imaging Emilie Billaud, Muneer Ahamed, Frederik Cleeren, Elnaz Shahbazali, Tim Noël, Volker Hessel, Alfons Verbruggen and Guy Bormans OP10 New complexing agent for Al18F-labelling of heat-sensitive biomolecules: Synthesis and preclinical evaluation of Al18F-RESCA1-HAS Cleeren F, Lecina J, Koole M, Verbruggen A and Bormans G OP11 A novel versatile precursor efficient for F-18 radiolabelling via click-chemistry B. Lugatoa, S. Stucchia, E.A. Turollaa, L. Giulianoa, S.Toddea, P. Ferraboschib OP12 A general applicable method to quantify unidentified UV impurities in radiopharmaceuticals R.P. Klok, M.P.J. Mooijer, N.H. Hendrikse, A.D. Windhorst OP13 Development of [18F]Fluoro-C-glycosides to radiolabel peptides Collet C., Petry N., Chrétien F., Karcher G., Pellegrini-Moïse N., Lamandé-Langle S. OP14 A Microfluidic Approach for the 68Ga-labeling of PSMAHBED-CC and NODAGA-RGD Sarah Pfaff, Cecile Philippe, Markus Mitterhauser, Marcus Hacker, Wolfgang Wadsak OP16 Surprising reactivity of astatine in the nucleophilic substitution of aryliodonium salts: application to the radiolabeling of antibodies François Guérard, Yong-Sok Lee, Sébastien Gouard, Kwamena Baidoo, Cyrille Alliot, Michel Chérel, Martin W. Brechbiel, Jean-François Gestin OP17 64Cu-NOTA-pertuzumab F(ab')2 fragments, a second-generation probe for PET imaging of the response of HER2-positive breast cancer to trastuzumab (Herceptin) Lam K, Chan C, Reilly RM OP18 Development of radiohalogenated analogues of a avb6-specific peptide for high LET particle emitter targeted radionuclide therapy of cancer Salomé Paillas, John Marshall, Jean-Pierre Pouget, Jane Sosabowski OP19 Ligand Specific Efficiency (LSE) as a guide in tracer optimization Emmanuelle Briard, Yves P. Auberson, John Reilly, Mark Healy, David Sykes OP23 The radiosynthesis of an 18F-labeled triglyceride, developed to visualize and quantify brown adipose tissue activity Andreas Paulus, Wouter van Marken Lichtenbelt,Felix Mottaghy, Matthias Bauwens OP24 Influence of the fluorescent dye on the tumor targeting properties of dual-labeled HBED-CC based PSMA inhibitors Baranski, Ann-Christin, Schäfer, Martin, Bauder-Wüst, Ulrike, Haberkorn, Uwe, Eder, Matthias, Kopka, Klaus OP25 [18F]MEL050 as a melanin PET tracer : fully automated radiosynthesis and evaluation for the detection of pigmented melanoma in mice pulmonary metastases Chaussard M, Hosten B, Vignal N, Tsoupko-Sitnikov V, Hernio N, Hontonnou F, Merlet P, Poyet JL, Sarda-Mantel L, Rizzo-Padoin N OP26 Design and Preclinical Evaluation of Novel Radiofluorinated PSMA Targeting Ligands Based on PSMA-617 J. Cardinale, M. Schäfer, M. Benešová, U. Bauder-Wüst, O. Seibert, F. Giesel, U. Haberkorn, M. Eder, K. Kopka OP27 A novel radiolabeled peptide for PET imaging of prostate cancer: 64Cu-DOTHA2-PEG-RM26 Mansour Nematallah, Paquette Michel, Ait-Mohand Samia, Dumulon-Perreault Véronique, Lecomte Roger, Guérin Brigitte OP29 Biodistribution of [18F]Amylovis®, a new radiotracer PET imaging of β-amyloid plaques Fernandez-Maza L, Rivera-Marrero S, Prats Capote A, Parrado-Gallego A, Fernandez-Gomez I, Balcerzyk M, Sablon-Carrazana M, Perera-Pintado A, Merceron-Martinez D, Acosta-Medina E, Rodriguez-Tanty C OP30 Synthesis and preclinical evaluation of [11C]-BA1 PET tracer for the imaging of CSF-1R Bala Attili, Muneer Ahamed, Guy Bormans OP31 In vivo imaging of the MCHR1 in the ventricular system via [18F]FE@SNAP C. Philippe, M. Zeilinger, T. Scherer, C. Fürnsinn, M. Dumanic, W. Wadsak, M. Hacker, M. Mitterhauser OP32 Synthesis of the first carbon-11 labelled P2Y12 receptor antagonist for imaging the anti-inflammatory phenotype of activated microglia B. Janssen, D.J. Vugts, G.T. Molenaar, U. Funke, P.S. Kruijer, F. Dollé, G. Bormans, A.A. Lammertsma, A.D. Windhorst OP33 Radiosynthesis of a selective HDAC6 inhibitor [11C]KB631 and in vitro and ex vivo evaluation Koen Vermeulen, Muneer Ahamed, Michael Schnekenburger, Mathy Froeyen, Dag Erlend Olberg, Marc Diederich, Guy Bormansa OP34 Improving metabolic stability of fluorine-18 labelled verapamil analogues Raaphorst RM, Luurtsema G, Lammertsma AA, Elsinga PH, Windhorst AD OP36 Development of a novel PET tracer for the activin receptor-like kinase 5 Lonneke Rotteveel, Uta Funke, Peter ten Dijke, Harm Jan Bogaard, Adriaan A. Lammertsma, Albert D. Windhorst OP37 SPECT imaging and biodistribution studies of 111In-EGF-Au-PEG nanoparticles in vivo Lei Song, Sarah Able, Nadia Falzone, Veerle Kersemans, Katherine Vallis OP38 Melanoma targeting with [99mTc(N)(PNP3)]-labeled NAPamide derivatives: preliminary pharmacological studies Davide Carta, Nicola Salvarese, Wiebke Sihver, Feng Gao, Hans Jürgen Pietzsch, Barbara Biondi, Paolo Ruzza, Fiorenzo Refosco, Cristina Bolzati OP39 [68Ga]NODAGA-RGD: cGMP synthesis and data from a phase I clinical study Roland Haubner, Armin Finkensted, Armin Stegmair, Christine Rangger, Clemens Decristoforo, Heinz Zoller, Irene J. Virgolin OP44 Implementation of a GMP-grade radiopharmacy facility in Maastricht Ivo Pooters, Maartje Lotz, Roel Wierts, Felix Mottaghy, Matthias Bauwens OP45 Setting up a GMP production of a new radiopharmaceutical Forsback, Sarita, Bergman Jörgen, Kivelä Riikka OP48 In vitro and in vivo evaluation of 68-gallium labeled Fe3O4-DPD nanoparticles as potential PET/MRI imaging agents M. Karageorgou, M. Radović, C. Tsoukalas, B. Antic, M. Gazouli, M. Paravatou-Petsotas, S. Xanthopouls, M. Calamiotou, D. Stamopoulos, S. Vranješ-Durić, P. Bouziotis OP49 Fast PET imaging of inflammation using 68Ga-citrate with Fe-containing salts of hydroxy acids A. S. Lunev, A. A. Larenkov, K.A. Petrosova, O. E. Klementyeva, G. E. Kodina PP01 Installation and validation of 11C-methionine synthesis Kvernenes, O.H., Adamsen, T.C.H. PP02 Fully automated synthesis of 68Ga-labelled peptides using the IBA Synthera® and Synthera® Extension modules René Martin, Sebastian Weidlich, Anna-Maria Zerges, Cristiana Gameiro, Neva Lazarova, Marco Müllera PP03 GMP compliant production of 15O-labeled water using IBA 18 MeV proton cyclotron Gert Luurtsema, Michèl de Vries, Michel Ghyoot, Gina van der Woude, Rolf Zijlma, Rudi Dierckx, Hendrikus H. Boersma, Philip H. Elsinga PP04 In vitro Nuclear Imaging Potential of New Subphthalocyanine and Zinc Phthalocyanine Fatma Yurt Lambrecht, Ozge Er, Mine Ince, Cıgır Biray Avci, Cumhur Gunduz, Fatma Aslihan Sarı PP05 Synthesis, Photodynamic Therapy Efficacy and Nuclear Imaging Potential of Zinc Phthalocyanines Kasim Ocakoglu, Ozge Er, Onur Alp Ersoz, Fatma Yurt Lambrecht, Mine Ince, Cagla Kayabasi, Cumhur Gunduz PP06 Radio-U(H)PLC – the Search on the Optimal Flow Cell for the γ-Detector Torsten Kniess, Sebastian Meister, Steffen Fischer, Jörg Steinbach PP07 Radiolabeling, characterization & biodistribution study of cysteine and its derivatives with Tc99m Rabia Ashfaq, Saeed Iqbal, Atiq-ur-Rehman, Irfan ullah Khan PP08 Radiolabelling of poly (lactic-co.glycolic acid) (PLGA) nanoparticles with 99mTC R Iglesias-Jerez, Cayero-Otero, L. Martín-Banderas, A. Perera-Pintado, I. Borrego-Dorado PP09 Development of [18F]PD-410 as a non-peptidic PET radiotracer for gastrin releasing peptide receptors Ines Farinha-Antunes, Chantal Kwizera, Enza Lacivita, Ermelinda Lucente, Mauro Niso, Paola De Giorgio, Roberto Perrone, Nicola A. Colabufo, Philip H. Elsinga, Marcello Leopoldo PP10 An improved nucleophilic synthesis of 2-(3,4-dimethoxyphenyl)-6-(2-[18F]fluoroethoxy) benzothiazole ([18F]FEDMBT), potential diagnostic agent for breast cancer imaging by PET V.V. Vaulina, O.S. Fedorova, V.V. Orlovskaja, С.L. Chen, G.Y. Li, F.C. Meng, R.S. Liu, H.E. Wang, R.N. Krasikova PP11 Internal radiation dose assessment of radiopharmaceuticals prepared with accelerator-produced 99mTc Laura Meléndez-Alafort, Mohamed Abozeid, Guillermina Ferro-Flores, Anna Negri, Michele Bello, Nikolay Uzunov, Martha Paiusco, Juan Esposito, Antonio Rosato PP12 A specialized five-compartmental model software for pharmacokinetic parameters calculation Laura Meléndez-Alafort, Cristina Bolzati, Guillermina Ferro-Flores, Nicola Salvarese, Debora Carpanese, Mohamed Abozeid, Antonio Rosato, Nikolay Uzunov PP13 Molecular imaging of the pharmacokinetic behavior of low molecular weight 18F-labeled PEtOx in comparison to 89Zr-labeled PEtOx Palmieri L, Verbrugghen T, Glassner M, Hoogenboom R, Staelens S, Wyffels L PP14 Towards nucleophilic synthesis of the α-[18F]fluoropropyl-L-dihydroxyphenylalanine V. V. Orlovskaja, O. F. Kuznetsova, O. S. Fedorova, V. I. Maleev, Yu. N. Belokon, A. Geolchanyan, A. S. Saghyan, L. Mu, R. Schibli, S. M. Ametamey, R. N. Krasikova PP15 A convenient one-pot synthesis of [18F]clofarabine Revunov, Evgeny, Malmquist, Jonas, Johnström, Peter, Van Valkenburgh, Juno, Steele, Dalton, Halldin, Christer, Schou, Magnus PP16 BODIPY-estradiol conjugates as multi-modality tumor imaging agents Samira Osati,Michel Paquette,Simon Beaudoin,Hasrat Ali,Brigitte Guerin, Jeffrey V. Leyton, Johan E. van Lier PP17 Easy and high yielding synthesis of 68Ga-labelled HBED-PSMA and DOTA-PSMA by using a Modular-Lab Eazy automatic synthesizer Di Iorio V, Iori M, Donati C, Lanzetta V, Capponi PC, Rubagotti S, Dreger T, Kunkel F, Asti M PP18 Synthesis and evaluation of fusarinine C-based octadentate bifunctional chelators for zirconium-89 labelling Chuangyan Zhai, Christine Rangger, Dominik Summer, Hubertus Haas, Clemens Decristoforo PP19 Fully automated production of [18F]NaF using a re-configuring FDG synthesis module. Suphansa Kijprayoon, Ananya Ruangma, Suthatip Ngokpol, Samart Tuamputsha PP20 Extension of the Carbon-11 Small Labeling Agents Toolbox and Conjugate Addition Ulrike Filp, Anna Pees, Carlotta Taddei, Aleksandra Pekošak, Antony D. Gee, Alex J. Poot, Albert D. Windhorst PP21 In vitro studies on BBB penetration of pramipexole encapsulated theranostic liposomes for the therapy of Parkinson’s disease Mine Silindir Gunay, A. Yekta Ozer, Suna Erdogan, Ipek Baysal, Denis Guilloteau, Sylvie Chalon PP22 Factors affecting tumor uptake of 99mTc-HYNIC-VEGF165 Filippo Galli, Marco Artico, Samanta Taurone, Enrica Bianchi, Bruce D. Weintraub, Mariusz Skudlinski, Alberto Signore PP23 Rhenium-188: a suitable radioisotope for targeted radiotherapy Nicolas Lepareur, Nicolas Noiret, François Hindré, Franck Lacœuille, Eric Benoist, Etienne Garin PP24 Preparation of a broad palette of 68Ga radiopharmaceuticals for clinical applications Trejo-Ballado F, Zamora-Romo E, Manrique-Arias JC, Gama-Romero HM, Contreras-Castañon G, Tecuapetla-Chantes RG, Avila-Rodriguez MA PP25 68Ga-peptide preparation with the use of two 68Ge/68Ga-generators H. Kvaternik, D. Hausberger, C. Zink, B. Rumpf, R. M. Aigner PP26 Assay of HEPES in 68Ga-peptides by HPLC H. Kvaternik, D. Hausberger, B. Rumpf, R. M. Aigner PP27 Preparation, in vitro and in vivo evaluation of a 99mTc(I)-Diethyl Ester (S,S)-Ethylenediamine- N,N´-DI-2-(3-Cyclohexyl) Propionic acid as a target-specific radiopharmaceutical Drina Janković, Mladen Lakić, Aleksandar Savić, Slavica Ristić, Nadežda Nikolić, Aleksandar Vukadinović, Tibor J. Sabo, Sanja Vranješ-Đurić PP28 90Y-labeled magnetite nanoparticles for possible application in cancer therapy S. Vranješ-Đurić, M. Radović, D. Janković, N. Nikolić, G. F. Goya, P. Calatayud, V. Spasojević, B. Antić PP29 Simplified automation of the GMP production of 68Ga-labelled peptides David Goblet, Cristiana Gameiro, Neva Lazarova PP30 Combining commercial production of multi-products in a GMP environment with Clinical & R&D activities Cristiana Gameiro, Ian Oxley, Antero Abrunhosa, Vasko Kramer, Maria Vosjan, Arnold Spaans PP31 99mTc(CO)3-labeling and Comparative In-Vivo Evaluation of Two Clicked cRGDfK Peptide Derivatives Kusum Vats, Drishty Satpati, Haladhar D Sarma, Sharmila Banerjee PP32 Application of AnaLig resin for 99mTc separation from molybdenum excess Wojdowska W., Pawlak D.W., Parus L. J., Garnuszek P., Mikołajczak R. PP33 Constraints for selection of suitable precursor for one-step automated synthesis of [18F]FECNT, the dopamine transporter ligand Pijarowska-Kruszyna J, Jaron A, Kachniarz A, Malkowski B, Garnuszek P, Mikolajczak R PP34 Gamma scintigraphy studies with 99mTc- amoxicillin sodium in bacterially infected and sterile inflamed rats Derya Ilem-Ozdemir, Oya Caglayan-Orumlu, Makbule Asikoglu PP35 Preparation of 99mTc- Amoxicillin Sodium Lyophilized Kit Derya Ilem-Ozdemir, Oya Caglayan-Orumlu, Makbule Asikoglu PP36 Outfits of Tracerlan FXC-PRO for 11C-Labeling Arponen Eveliina, Helin Semi, Saarinen Timo, Vauhkala Simo, Kokkomäki Esa, Lehikoinen Pertti PP37 Microfluidic synthesis of ω-[18F]fluoro-1-alkynes Mariarosaria De Simone, Giancarlo Pascali, Ludovica Carzoli, Mauro Quaglierini, Mauro Telleschi, Piero A. Salvadori PP38 Automated 18F-flumazenil production using chemically resistant disposable cassettes Phoebe Lam, Martina Aistleitner, Reinhard Eichinger, Christoph Artner PP39 The effect of the eluent solutions (TBAHCO3, Kryptand K2.2.2) on the radiochemical yields of 18F-Fluoromethylcholine Surendra Nakka, Hemantha Kumara MC, Al-Qahtani Mohammed PP40 [68Ga]Radiolabeling of short peptide that has a PET imaging potentials Al-Qahtani, Mohammed, Al-Malki, Yousif PP41 Is validation of radiochemical purity analysis in a public hospital in a developing country possible? N Mambilima, SM Rubow PP42 Improved automated radiosynthesis of [18F]FEPPA N. Berroterán-Infante, M. Hacker, M. Mitterhauser, W. Wadsak PP43 Synthesis and initial evaluation of Al18F-RESCA1-TATE for somatostatin receptor imaging with PET Uta Funke, Frederik Cleeren, Joan Lecina, Rodrigo Gallardo, Alfons M. Verbruggen, Guy Bormans PP44 Radiolabeling and SPECT/CT imaging of different polymer-decorated zein nanoparticles for oral administration Rocío Ramos-Membrive, Ana Brotons, Gemma Quincoces, Laura Inchaurraga, Inés Luis de Redín, Verónica Morán, Berta García-García, Juan Manuel Irache, Iván Peñuelas PP45 An analysis of the quality of 68Ga-DOTANOC radiolabelling over a 3 year period Trabelsi, M., Cooper M.S. PP46 In vivo biodistribution of adult human mesenchymal stem cells I (MSCS-ah) labeled with 99MTC-HMPAO administered via intravenous and intra-articular in animal model. Preliminary results Alejandra Abella, Teodomiro Fuente, Antonio Jesús Montellano, Teresa Martínez, Ruben Rabadan, Luis Meseguer-Olmo PP47 Synthesis of [18F]F-exendin-4 with high specific activity Lehtiniemi P, Yim C, Mikkola K, Nuutila P, Solin O PP48 Experimental radionuclide therapy with 177Lu-labelled cyclic minigastrin and human dosimetry estimations von Guggenberg E, Rangger C, Mair C, Balogh L, Pöstényi Z, Pawlak D, Mikołajczak R PP49 Synthesis of radiopharmaceuticals for cell radiolabelling using anion exchange column Socan A, Kolenc Peitl P, Krošelj M, Rangger C, Decristoforo C PP50 [68Ga]peptide production on commercial synthesiser mAIO Collet C., Remy S., Didier R,Vergote T.,Karcher G., Véran N. PP51 Dry kit formulation for efficient radiolabeling of 68Ga-PSMA D. Pawlak, M. Maurin, P. Garnuszek, U. Karczmarczyk, R. Mikołajczak PP52 Development of an experimental method using Cs-131 to evaluate radiobiological effects of internalized Auger-electron emitters Pil Fredericia, Gregory Severin, Torsten Groesser, Ulli Köster, Mikael Jensen PP53 Preclinical comparative evaluation of NOTA/NODAGA/DOTA CYCLO-RGD peptides labelled with Ga-68 R. Leonte, F. D. Puicea, A. Raicu, E. A. Min, R. Serban, G. Manda, D. Niculae PP54 Synthesizer- and Kit-based preparation of prostate cancer imaging agent 68Ga-RM2 Marion Zerna, Hanno Schieferstein, Andre Müller, Mathias Berndt PP55 Synthesis of pancreatic beta cell-specific [18F]fluoro-exendin-4 via strain-promoted aza-dibenzocyclooctyne/azide cycloaddition Cheng-Bin Yim, Kirsi Mikkola, Pirjo Nuutila, Olof Solin PP56 Automated systems for radiopharmacy D. Seifert, J. Ráliš, O. Lebeda PP57 Simple, suitable for everyday routine use quality control method to assess radionuclidic purity of cyclotron-produced 99mTc Svetlana V. Selivanova, Helena Senta, Éric Lavallée, Lyne Caouette, Éric Turcotte, Roger Lecomte PP58 Effective dose estimation using Monte Carlo simulation for patients undergoing radioiodine therapy Marina Zdraveska Kochovska, Emilija Janjevik Ivanovska, Vesna Spasic Jokic PP59 Chemical analysis of the rituximab radioimmunoconjugates in lyophilized formulations intended for oncological applications Darinka Gjorgieva Ackova, Katarina Smilkov, Petre Makreski, Trajče Stafilov, Emilija Janevik-Ivanovska PP61 The need and benefits of established radiopharmacy in developing African countries Aschalew Alemu, Joel Munene Muchira, David Mwanza Wanjeh, Emilija Janevik-Ivanovska PP62 University Master Program of Radiopharmacy – step forward for Good Radiopharmacy Education Emilija Janevik-Ivanovska, Zoran Zdravev, Uday Bhonsle, Osso Júnior João Alberto, Adriano Duatti, Bistra Angelovska, Zdenka Stojanovska, Zorica Arsova Sarafinovska, Darko Bosnakovski, Darinka Gorgieva-Ackova, Katarina Smilkov, Elena Drakalska, Meera Venkatesh, Rubin Gulaboski PP63 Synthesis and preclinical validations of a novel 18F-labelled RGD peptide prepared by ligation of a 2-cyanobenzothiazole with 1,2-aminothiol to image angiogenesis. Didier J. Colin, James A. H. Inkster, Stéphane Germain, Yann Seimbille
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Liolios C, Schäfer M, Haberkorn U, Eder M, Kopka K. Novel Bispecific PSMA/GRPr Targeting Radioligands with Optimized Pharmacokinetics for Improved PET Imaging of Prostate Cancer. Bioconjug Chem 2016; 27:737-51. [PMID: 26726823 DOI: 10.1021/acs.bioconjchem.5b00687] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new series of bispecific radioligands (BRLs) targeting prostate-specific membrane antigen (PSMA) and gastrin releasing peptide receptor (GRPr), both expressed on prostate cancer cells, was developed. Their design was based on the bombesin (BN) analogue, H2N-PEG2-[D-Tyr(6),β-Ala(11),Thi(13),Nle(14)]BN(6-14), which binds to GRPr with high affinity and specificity, and the peptidomimetic urea-based pseudoirreversible inhibitor of PSMA, Glu-ureido-Lys. The two pharmacophores were coupled through copper(I)-catalyzed azide-alkyne cycloaddition to the bis(tetrafluorophenyl) ester of the chelating agent HBED-CC via amino acid linkers made of positively charged His (H) and negatively charged Glu (E): -(HE)n- (n = 0-3). The BRLs were labeled with (68)Ga, and their preliminary pharmacological properties were evaluated in vitro (competitive and time kinetic binding assays) on prostate cancer (PC-3, LNCaP) and rat pancreatic (AR42J) cell lines and in vivo by biodistribution and small animal PET imaging studies in both normal and tumor-bearing mice. The IC50/Ki values determined for all BRLs essentially matched those of the respective monomers. The maximal cellular uptake of the BLRs was observed between 20 and 30 min. The BRLs showed a synergistic ability in vivo by targeting both PSMA (LNCaP) and GRPr (PC-3) positive tumors, whereas the charged -(HE)n- (n = 1-3) linkers significantly reduced the kidney and spleen uptake. The bispecific (PSMA and GRPr) targeting ability and optimized pharmacokinetics of the compounds developed in this study could lead to their future application in clinical practice as more sensitive radiotracers for noninvasive imaging of prostate cancer (PCa) by PET/CT and PET/MRI.
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Affiliation(s)
- C Liolios
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center (DKFZ) , 69120 Heidelberg, Germany
| | - M Schäfer
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center (DKFZ) , 69120 Heidelberg, Germany
| | - U Haberkorn
- Clinical Cooperation Unit Nuclear Medicine, University of Heidelberg , 69120 Heidelberg, Germany.,German Cancer Consortium (DKTK) , 69120 Heidelberg, Germany
| | - M Eder
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center (DKFZ) , 69120 Heidelberg, Germany
| | - K Kopka
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center (DKFZ) , 69120 Heidelberg, Germany.,German Cancer Consortium (DKTK) , 69120 Heidelberg, Germany
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Sachpekidis C, Eder M, Kopka K, Mier W, Hadaschik BA, Haberkorn U, Dimitrakopoulou-Strauss A. 68Ga-PSMA-11 dynamic PET/CT imaging in biochemical relapse of prostate cancer. Eur J Nucl Med Mol Imaging 2016; 43:1288-99. [DOI: 10.1007/s00259-015-3302-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 12/22/2015] [Indexed: 02/07/2023]
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Horbens M, Eder M, Neinhuis C. A materials perspective of Martyniaceae fruits: Exploring structural and micromechanical properties. Acta Biomater 2015; 28:13-22. [PMID: 26441125 DOI: 10.1016/j.actbio.2015.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 09/10/2015] [Accepted: 10/01/2015] [Indexed: 11/25/2022]
Abstract
Several species of the plant family Martyniaceae are characterised by unique lignified capsules with hook-shaped extensions that interlock with hooves and ankles of large mammals to disperse the seeds. The arrangement of fruit endocarp fibre tissues is exceptional and intriguing among plants. Structure-function-relationships of these slender, curved, but mechanically highly stressed fruit extensions are of particular interest that may inspire advanced biomimetic composite materials. In the present study, we analyse mechanical properties and fracture behaviour of the hook-shaped fruit extensions under different load conditions. The results are correlated with calculated stress distributions, the specific cell wall structure, and chemical composition, providing a detailed interpretation of the complex fruit tissue microstructure. At the cell wall level, both a large microfibril angle and greater strain rates resulted in Young's moduli of 4-9 GPa, leading to structural plasticity. Longitudinally arranged fibre bundles contribute to a great tensile strength. At the tissue level, transversely oriented fibres absorb radial stresses upon bending, whereas cells encompass and pervade longitudinal fibre bundles, thus, stabilise them against buckling. During bending and torsion, microcracks between axial fibre bundles are probably spanned analogous to a circular anchor. Our study fathoms a highly specialized plant structure, substantiating former assumptions about epizoochory as dispersal mode. While the increased flexibility allows for proper attachment of fruits during dynamical locomotion, the high strength and stability prevent a premature failure due to heavy loads exerted by the animal.
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Cahu X, Labopin M, Giebel S, Aljurf M, Kyrcz-Krzemien S, Socié G, Eder M, Bonifazi F, Bunjes D, Vigouroux S, Michallet M, Stelljes M, Zuckerman T, Finke J, Passweg J, Yakoub-Agha I, Niederwieser D, Sucak G, Sengeløv H, Polge E, Nagler A, Esteve J, Mohty M. Impact of conditioning with TBI in adult patients with T-cell ALL who receive a myeloablative allogeneic stem cell transplantation: a report from the acute leukemia working party of EBMT. Bone Marrow Transplant 2015; 51:351-7. [PMID: 26618548 DOI: 10.1038/bmt.2015.278] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 08/15/2015] [Accepted: 09/14/2015] [Indexed: 01/01/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-SCT) is a therapeutic option for adult patients with T-cell ALL (T-ALL). Meanwhile, few allo-SCT data specific to adult T-ALL have been described thus far. Specifically, the optimal myeloablative conditioning regimen is unknown. In this retrospective study, 601 patients were included. Patients received allo-SCT in CR1, CR2, CR >2 or in advanced disease in 69%, 15%, 2% and 14% of cases, respectively. With an overall follow-up of 58 months, 523 patients received a TBI-based regimen, whereas 78 patients received a chemotherapy-based regimen including IV busulfan-cyclophosphamide (IV Bu-Cy) (n=46). Unlike patients aged ⩾35 years, patients aged <35 years who received a TBI-based regimen displayed an improved outcome compared with patients who received a chemotherapy-based regimen (5-year leukemia-free survival (LFS) of 50% for TBI versus 18% for chemo-only regimen or IV Bu-Cy regimens, P=10(-5) and 10(-4), respectively). In multivariate analysis, use of TBI was associated with an improved LFS (hazard ratio (HR)=0.55 (0.34-0.86), P=0.01) and overall survival (HR=0.54 (0.34-0.87), P=0.01) in patients aged <35 years. In conclusion, younger adult patients with T-ALL entitled to receive a myeloablative allo-SCT may benefit from TBI-based regimens.
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Affiliation(s)
- X Cahu
- Hématologie Clinique, Hôpital Pontchaillou, CHU Rennes, France
| | - M Labopin
- Service d'Hématologie Clinique et Thérapie Cellulaire, Hôpital Saint-Antoine, AP-HP, Paris, France.,Université Pierre and Marie Curie, Paris, France.,INSERM, UMR_S 938, INSERM, Paris, France
| | - S Giebel
- Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - M Aljurf
- Adult Hematology/HSCT, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - S Kyrcz-Krzemien
- Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, Katowice, Poland
| | - G Socié
- Hematology-Transplantation, Hospital St Louis, APHP, Paris, France
| | - M Eder
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - F Bonifazi
- Institute of Hematology, Department of Hematology and Oncological Sciences 'L. and A. Seràgnoli,' University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - D Bunjes
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Germany
| | - S Vigouroux
- Hématologie Clinique et Thérapie Cellulaire, Hôpital Haut Levêque, Pessac, France
| | - M Michallet
- Hématologie Clinique, Hospices Civils de Lyon, Lyon, France
| | - M Stelljes
- Department of Medicine A/Hematology and Oncology, University of Muenster Muenster, Germany
| | - T Zuckerman
- Department of Hematology and Bone Marrow Transplantation, Rambam MCH, Haifa, Israel
| | - J Finke
- Department of Medecine-Hematology, Oncology, University of Freiburg, Freiburg, Germany
| | - J Passweg
- Hematology, University Hospital of Basel, Basel, Switzerland
| | - I Yakoub-Agha
- Hématologie Clinique, Hôpital Claude Huriez, Lille, France
| | - D Niederwieser
- University Hospital Leipzig, Clinic for Hematology and Oncology, Leipzig, Germany
| | - G Sucak
- Department of Hematology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - H Sengeløv
- National University Hospital, Copenhagen, Denmark
| | - E Polge
- Service d'Hématologie Clinique et Thérapie Cellulaire, Hôpital Saint-Antoine, AP-HP, Paris, France.,Université Pierre and Marie Curie, Paris, France.,INSERM, UMR_S 938, INSERM, Paris, France
| | - A Nagler
- Hematology Division, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | - J Esteve
- Hematology Department, Hospital Clínic, IDIBAPS, Barcelona, Spain
| | - M Mohty
- Service d'Hématologie Clinique et Thérapie Cellulaire, Hôpital Saint-Antoine, AP-HP, Paris, France.,Université Pierre and Marie Curie, Paris, France.,INSERM, UMR_S 938, INSERM, Paris, France
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Stepan J, Micale V, Wotjak C, Eder M. Enhanced endocannabinoid signaling boosts signal propagation through the hippocampal trisynaptic circuit and facilitates safety learning. Pharmacopsychiatry 2015. [DOI: 10.1055/s-0035-1557995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Stepan J, Micale V, Wotjak C, Eder M. Enhanced endocannabinoid signaling boosts signal propagation through the hippocampal trisynaptic circuit and facilitates safety learning. Pharmacopsychiatry 2015. [DOI: 10.1055/s-0035-1558035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nasseri MA, Eder M, Nair S, Dean EC, Maier M, Zapp D, Lohmann CP, Knoll A. The introduction of a new robot for assistance in ophthalmic surgery. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2013:5682-5. [PMID: 24111027 DOI: 10.1109/embc.2013.6610840] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This paper introduces the design and development of a new robotic system to assist surgeons performing ophthalmic surgeries. The robot itself is very compact and similar to an average human hand in size. Its primary application is intraocular micromanipulation in order to overcome the existing challenges in treatment of diseases like Retinal Vein Occlusion (RVO). The novel hybrid mechanism designed for this robot allows microscale motions and is stable in the presence of vibrations common in operation room (OR). The robotic system can be easily integrated into standard operation rooms and does not require modification of conventional surgical tools. This compact microsurgical system is suitable for mounting on the patient's head and thereby, solves the problem of patient motion. The compatibility of the robotic system with a real world surgical setup was evaluated and confirmed in this work.
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Nahmias MA, Shastri BJ, Tait AN, Eder M, Rafidi N, Tian Y, Prucnal PR. Normalized pulsed energy thresholding in a nonlinear optical loop mirror. Appl Opt 2015; 54:3218-3224. [PMID: 25967306 DOI: 10.1364/ao.54.003218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrate for the first time, to the best of our knowledge, that a Sagnac interferometer can threshold the energies of pulses. Pulses below a given threshold T are suppressed, while those above this threshold are normalized. The device contains an in-loop tunable isolator and 10.4 m of a highly doped silica fiber. We derive an analytical model of the nonlinear optical loop mirror's pulse energy transfer function and show that its energy transfer function approximates a step function for very high phase shifts (>π). We reveal some limitations of this approach, showing that a step-function transfer function necessarily results in pulse distortion in fast, nonresonant all-optical devices.
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Haberkorn U, Babich J, Kopka K, Eder M, Eisenhut M. SP-0602: PSMA ligands for diagnosis and therapy. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40596-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Opfermann P, Eder M, Moser B, Taghavi S, Dworschak M. Risks and complications pertaining to anesthesia management in patients with huge pulmonary artery aneursyms undergoing double lung transplantation. Minerva Anestesiol 2015; 81:354-355. [PMID: 25411770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- P Opfermann
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
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Haberkorn U, Afshar-Oromieh A, Giesel F, Kopka K, Eder M, Babich J, Kratochwil C. PSMA ligands for diagnosis and therapy of prostate cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv097.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Steiner T, Raith S, Scherer E, Mücke T, Torsiglieri T, Rohleder N, Eder M, Grohmann I, Kesting M, Bier H, Wolff KD, Hölzle F. Which kind of frontal mandibulotomy is the smartest? A biomechanical study. J Craniomaxillofac Surg 2015; 43:199-203. [DOI: 10.1016/j.jcms.2014.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 10/25/2014] [Accepted: 11/06/2014] [Indexed: 01/24/2023] Open
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